Press n or j to go to the next uncovered block, b, p or k for the previous block.
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69x 64x 64x 1x 198x 197x 1x 1x 198x 198x 197x 180x 18x 17x 17x 197x 180x 180x 177x 169x 100x 69x 69x 64x 5x 5x 69x 64x 1x 63x 63x 64x 64x 801x 801x 801x 801x 801x 801x 801x 801x 801x 35x 765x 765x 765x 765x 12x 753x 753x 753x 800x 800x 800x 800x 387x 413x 413x 413x 2x 2x 1x 765x 765x 765x 705x 66x 60x 60x 12x 12x 12x 48x 48x 48x 60x 3x 57x 57x 50x 7x 753x 152x 601x 601x 601x 601x 601x 601x 601x 601x 601x 140x 461x 461x 601x 601x 601x 601x 281x 180x 180x 3x 3x 745x 745x 49x 6x 6x 49x 49x 17x 17x 17x 20x 16x 1x 1x 1x 133x 5x 5x 5x 128x 2x 126x 6x 12x 6x 6x 120x 43x 77x 41x 41x 295x 37x 264x 42x 16x 4x 1x 2x 3x 6x 9x 5x 7x 27x 1x 9x 5x 298x 298x 298x 298x 298x 207x 298x 171x 298x 298x 298x 298x 298x 298x 298x 298x 298x 295x 298x 298x 298x 298x 298x 1x 1x 1x 198x 198x 17x 181x 181x 1x 81x 63x 63x 63x 63x 63x 63x 8x 72x 30x 10x 7x 12x 84x 5x 13x 8x 8x 8x 8x 8x 8x 25x 1x 24x 574x 574x 574x 123x 451x 451x 27x 451x 24x 24x 2x 22x 427x 427x 426x 427x 41x 41x 41x 386x 386x 20x 2x 386x 386x 1x 385x 1034x 1034x 1034x 2x 1032x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 24x 7x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 818x 27x 27x 4x 1453x 1453x 1453x 818x | /**
* C-Next Code Generator
* Transforms C-Next AST to clean, readable C code
*/
import { CommonTokenStream, ParserRuleContext } from "antlr4ng";
import * as Parser from "../../logic/parser/grammar/CNextParser";
import SymbolTable from "../../logic/symbols/SymbolTable";
import ESymbolKind from "../../../utils/types/ESymbolKind";
import CommentExtractor from "../../logic/analysis/CommentExtractor";
import CommentFormatter from "./CommentFormatter";
import IncludeDiscovery from "../../data/IncludeDiscovery";
import IComment from "../../types/IComment";
import TYPE_WIDTH from "./types/TYPE_WIDTH";
import TYPE_MAP from "./types/TYPE_MAP";
import TYPE_LIMITS from "./types/TYPE_LIMITS";
// Issue #60: BITMAP_SIZE and BITMAP_BACKING_TYPE moved to SymbolCollector
import TTypeInfo from "./types/TTypeInfo";
import TParameterInfo from "./types/TParameterInfo";
import TOverflowBehavior from "./types/TOverflowBehavior";
import ICodeGeneratorOptions from "./types/ICodeGeneratorOptions";
import TypeResolver from "./TypeResolver";
import ICodeGenSymbols from "../../types/ICodeGenSymbols";
import TypeValidator from "./TypeValidator";
import TypeRegistrationUtils from "./TypeRegistrationUtils";
import IOrchestrator from "./generators/IOrchestrator";
import IGeneratorInput from "./generators/IGeneratorInput";
import IGeneratorState from "./generators/IGeneratorState";
import TGeneratorEffect from "./generators/TGeneratorEffect";
import TIncludeHeader from "./generators/TIncludeHeader";
import GeneratorRegistry from "./generators/GeneratorRegistry";
// ADR-053: Expression generators (A2)
import generateLiteral from "./generators/expressions/LiteralGenerator";
import binaryExprGenerators from "./generators/expressions/BinaryExprGenerator";
import generateUnaryExpr from "./generators/expressions/UnaryExprGenerator";
import expressionGenerators from "./generators/expressions/ExpressionGenerator";
import generatePostfixExpression from "./generators/expressions/PostfixExpressionGenerator";
// ADR-053: Statement generators (A3)
import controlFlowGenerators from "./generators/statements/ControlFlowGenerator";
import generateCriticalStatement from "./generators/statements/CriticalGenerator";
import atomicGenerators from "./generators/statements/AtomicGenerator";
import switchGenerators from "./generators/statements/SwitchGenerator";
// ADR-053: Declaration generators (A4)
import enumGenerator from "./generators/declarationGenerators/EnumGenerator";
import bitmapGenerator from "./generators/declarationGenerators/BitmapGenerator";
import registerGenerator from "./generators/declarationGenerators/RegisterGenerator";
import scopedRegisterGenerator from "./generators/declarationGenerators/ScopedRegisterGenerator";
import structGenerator from "./generators/declarationGenerators/StructGenerator";
import functionGenerator from "./generators/declarationGenerators/FunctionGenerator";
import scopeGenerator from "./generators/declarationGenerators/ScopeGenerator";
// ADR-109: Extracted utilities
import BitUtils from "../../../utils/BitUtils";
import CppNamespaceUtils from "../../../utils/CppNamespaceUtils";
import FormatUtils from "../../../utils/FormatUtils";
import StringUtils from "../../../utils/StringUtils";
import TypeCheckUtils from "../../../utils/TypeCheckUtils";
import ExpressionUtils from "../../../utils/ExpressionUtils";
// ADR-053: Support generators (A5)
import helperGenerators from "./generators/support/HelperGenerator";
import includeGenerators from "./generators/support/IncludeGenerator";
import commentUtils from "./generators/support/CommentUtils";
// ADR-046: NullCheckAnalyzer for nullable C pointer type detection
import NullCheckAnalyzer from "../../logic/analysis/NullCheckAnalyzer";
// ADR-006: Helper for building member access chains with proper separators
import memberAccessChain from "./memberAccessChain";
// ADR-109: Assignment decomposition (Phase 2)
import AssignmentHandlerRegistry from "./assignment/index";
import AssignmentClassifier from "./assignment/AssignmentClassifier";
import buildAssignmentContext from "./assignment/AssignmentContextBuilder";
import IHandlerDeps from "./assignment/handlers/IHandlerDeps";
// Issue #461: LiteralUtils for parsing const values from symbol table
import LiteralUtils from "../../../utils/LiteralUtils";
// Issue #644: Extracted string length counter for strlen caching optimization
import StringLengthCounter from "./analysis/StringLengthCounter";
// Issue #644: C/C++ mode helper for consolidated mode-specific patterns
import CppModeHelper from "./helpers/CppModeHelper";
// Issue #644: Array dimension parsing helper for consolidation
import ArrayDimensionParser from "./helpers/ArrayDimensionParser";
// Issue #644: Member chain analyzer for bit access pattern detection
import MemberChainAnalyzer from "./analysis/MemberChainAnalyzer";
// Issue #644: Float bit write helper for shadow variable pattern
import FloatBitHelper from "./helpers/FloatBitHelper";
// Issue #644: String declaration helper for bounded/array/concat strings
import StringDeclHelper from "./helpers/StringDeclHelper";
// Issue #644: Enum assignment validator for type-safe enum assignments
import EnumAssignmentValidator from "./helpers/EnumAssignmentValidator";
// Issue #644: Array initialization helper for size inference and fill-all
import ArrayInitHelper from "./helpers/ArrayInitHelper";
// Issue #644: Assignment expected type resolution helper
import AssignmentExpectedTypeResolver from "./helpers/AssignmentExpectedTypeResolver";
// PR #715: C++ member conversion helper for improved testability
import CppMemberHelper from "./helpers/CppMemberHelper";
import IPostfixOp from "./helpers/types/IPostfixOp";
// PR #715: Boolean conversion helper for improved testability
import BooleanHelper from "./helpers/BooleanHelper";
// PR #715: C++ constructor detection helper for improved testability
import CppConstructorHelper from "./helpers/CppConstructorHelper";
// PR #715: Set/Map utilities for improved testability
import SetMapHelper from "./helpers/SetMapHelper";
// PR #715: Symbol lookup utilities for improved testability
import SymbolLookupHelper from "./helpers/SymbolLookupHelper";
// Issue #644: Assignment validation coordinator helper
import AssignmentValidator from "./helpers/AssignmentValidator";
// Issue #696: Variable modifier extraction helper
import VariableModifierBuilder from "./helpers/VariableModifierBuilder";
// PR #681: Extracted separator and dereference resolution utilities
import MemberSeparatorResolver from "./helpers/MemberSeparatorResolver";
import ParameterDereferenceResolver from "./helpers/ParameterDereferenceResolver";
// SonarCloud S3776: Extracted helpers for assignment target generation
import PostfixChainBuilder from "./helpers/PostfixChainBuilder";
import SimpleIdentifierResolver from "./helpers/SimpleIdentifierResolver";
import BaseIdentifierBuilder from "./helpers/BaseIdentifierBuilder";
import ISimpleIdentifierDeps from "./types/ISimpleIdentifierDeps";
import IPostfixChainDeps from "./types/IPostfixChainDeps";
import IPostfixOperation from "./types/IPostfixOperation";
// Issue #707: Expression unwrapping utility for reducing duplication
import ExpressionUnwrapper from "./utils/ExpressionUnwrapper";
// Stateless parser utilities extracted from CodeGenerator
import CodegenParserUtils from "./utils/CodegenParserUtils";
import IMemberSeparatorDeps from "./types/IMemberSeparatorDeps";
import IParameterDereferenceDeps from "./types/IParameterDereferenceDeps";
import ISeparatorContext from "./types/ISeparatorContext";
// Issue #566: Statement expression collection for const inference
import StatementExpressionCollector from "./helpers/StatementExpressionCollector";
// Issue #269: Transitive modification propagation for const inference
import TransitiveModificationPropagator from "./helpers/TransitiveModificationPropagator";
// Issue #566: Child statement/block collection for const inference
import ChildStatementCollector from "./helpers/ChildStatementCollector";
// SonarCloud S3776: Assignment target extraction for walkStatementForModifications
import AssignmentTargetExtractor from "./helpers/AssignmentTargetExtractor";
// Phase 3: Type generation helper for improved testability
import TypeGenerationHelper from "./helpers/TypeGenerationHelper";
// Phase 5: Cast validation helper for improved testability
import CastValidator from "./helpers/CastValidator";
// Global state for code generation (simplifies debugging, eliminates DI complexity)
import CodeGenState from "./CodeGenState";
// Extracted resolvers that use CodeGenState
import SizeofResolver from "./resolution/SizeofResolver";
import EnumTypeResolver from "./resolution/EnumTypeResolver";
import ScopeResolver from "./resolution/ScopeResolver";
const {
generateOverflowHelpers: helperGenerateOverflowHelpers,
generateSafeDivHelpers: helperGenerateSafeDivHelpers,
} = helperGenerators;
const {
transformIncludeDirective: includeTransformIncludeDirective,
processPreprocessorDirective: includeProcessPreprocessorDirective,
} = includeGenerators;
const {
getLeadingComments: commentGetLeadingComments,
formatLeadingComments: commentFormatLeadingComments,
} = commentUtils;
/**
* Maps C-Next assignment operators to C assignment operators
*/
const ASSIGNMENT_OPERATOR_MAP: Record<string, string> = {
"<-": "=",
"+<-": "+=",
"-<-": "-=",
"*<-": "*=",
"/<-": "/=",
"%<-": "%=",
"&<-": "&=",
"|<-": "|=",
"^<-": "^=",
"<<<-": "<<=",
">><-": ">>=",
};
/**
* ADR-013: Function signature for const parameter tracking
* Used to validate const-to-non-const errors at call sites
*/
interface FunctionSignature {
name: string;
parameters: Array<{
name: string;
baseType: string; // The C-Next type (e.g., 'u32', 'f32')
isConst: boolean;
isArray: boolean;
}>;
}
/**
* ADR-049: Target platform capabilities for code generation
*/
interface TargetCapabilities {
wordSize: 8 | 16 | 32;
hasLdrexStrex: boolean;
hasBasepri: boolean;
}
/**
* ADR-049: Target platform capability map
*/
const TARGET_CAPABILITIES: Record<string, TargetCapabilities> = {
teensy41: { wordSize: 32, hasLdrexStrex: true, hasBasepri: true },
teensy40: { wordSize: 32, hasLdrexStrex: true, hasBasepri: true },
"cortex-m7": { wordSize: 32, hasLdrexStrex: true, hasBasepri: true },
"cortex-m4": { wordSize: 32, hasLdrexStrex: true, hasBasepri: true },
"cortex-m3": { wordSize: 32, hasLdrexStrex: true, hasBasepri: true },
"cortex-m0+": { wordSize: 32, hasLdrexStrex: true, hasBasepri: false },
"cortex-m0": { wordSize: 32, hasLdrexStrex: false, hasBasepri: false },
avr: { wordSize: 8, hasLdrexStrex: false, hasBasepri: false },
};
/**
* ADR-049: Default target capabilities (safe fallback)
*/
const DEFAULT_TARGET: TargetCapabilities = {
wordSize: 32,
hasLdrexStrex: false,
hasBasepri: false,
};
/**
* ADR-044: Assignment context for overflow behavior tracking
*/
interface AssignmentContext {
targetName: string | null;
targetType: string | null;
overflowBehavior: TOverflowBehavior;
}
/**
* Context for tracking current scope during code generation
*/
interface GeneratorContext {
currentScope: string | null; // ADR-016: renamed from currentNamespace
currentFunctionName: string | null; // Issue #269: track current function for pass-by-value lookup
currentFunctionReturnType: string | null; // Issue #477: track return type for enum inference
indentLevel: number;
scopeMembers: Map<string, Set<string>>; // scope -> member names (ADR-016)
currentParameters: Map<string, TParameterInfo>; // ADR-006: track params for pointer semantics
// Issue #558: modifiedParameters removed - now uses analysis-phase results from CodeGenState.modifiedParameters
localArrays: Set<string>; // ADR-006: track local array variables (no & needed)
localVariables: Set<string>; // ADR-016: track local variables (allowed as bare identifiers)
floatBitShadows: Set<string>; // Track declared shadow variables for float bit indexing
floatShadowCurrent: Set<string>; // Track which shadows have current value (skip redundant memcpy reads)
inFunctionBody: boolean; // ADR-016: track if we're inside a function body
typeRegistry: Map<string, TTypeInfo>; // Track variable types for bit access and .length
expectedType: string | null; // For inferred struct initializers
mainArgsName: string | null; // Track the args parameter name for main() translation
assignmentContext: AssignmentContext; // ADR-044: Track current assignment for overflow
lastArrayInitCount: number; // ADR-035: Track element count for size inference
lastArrayFillValue: string | undefined; // ADR-035: Track fill-all value
lengthCache: Map<string, string> | null; // Cache: variable name -> temp variable name for strlen optimization
targetCapabilities: TargetCapabilities; // ADR-049: Target platform for atomic code generation
}
/**
* Code Generator - Transpiles C-Next to C
*
* Implements IOrchestrator to support modular generator extraction (ADR-053).
*/
export default class CodeGenerator implements IOrchestrator {
/** Lookup map for primitive type zero initializers */
private static readonly PRIMITIVE_ZERO_VALUES: ReadonlyMap<string, string> =
new Map([
["bool", "false"],
["f32", "0.0f"],
["f64", "0.0"],
]);
private context: GeneratorContext =
CodeGenerator.createDefaultContext(DEFAULT_TARGET);
/**
* Create a fresh GeneratorContext with default values.
*/
private static createDefaultContext(
targetCapabilities: TargetCapabilities,
): GeneratorContext {
return {
currentScope: null,
currentFunctionName: null,
currentFunctionReturnType: null,
indentLevel: 0,
scopeMembers: new Map(),
currentParameters: new Map(),
localArrays: new Set(),
localVariables: new Set(),
floatBitShadows: new Set(),
floatShadowCurrent: new Set(),
inFunctionBody: false,
typeRegistry: new Map(),
expectedType: null,
mainArgsName: null,
assignmentContext: {
targetName: null,
targetType: null,
overflowBehavior: "clamp",
},
lastArrayInitCount: 0,
lastArrayFillValue: undefined,
lengthCache: null,
targetCapabilities,
};
}
/** Token stream for comment extraction (ADR-043) */
private tokenStream: CommonTokenStream | null = null;
private commentExtractor: CommentExtractor | null = null;
private readonly commentFormatter: CommentFormatter = new CommentFormatter();
/** Type resolution and classification */
private typeResolver: TypeResolver | null = null;
/** Symbol collection - ADR-055: Now uses ISymbolInfo from TSymbolInfoAdapter */
public symbols: ICodeGenSymbols | null = null;
/** Type validation - Issue #63: Extracted from CodeGenerator */
private typeValidator: TypeValidator | null = null;
/** Issue #644: String length counter for strlen caching optimization */
private stringLengthCounter: StringLengthCounter | null = null;
/** Issue #644: Member chain analyzer for bit access pattern detection */
private memberChainAnalyzer: MemberChainAnalyzer | null = null;
/** Issue #644: Float bit write helper for shadow variable pattern */
private floatBitHelper: FloatBitHelper | null = null;
/** Issue #644: String declaration helper for bounded/array/concat strings */
private stringDeclHelper: StringDeclHelper | null = null;
/** Issue #644: Enum assignment validator for type-safe enum assignments */
private enumValidator: EnumAssignmentValidator | null = null;
/** Issue #644: Array initialization helper for size inference and fill-all */
private arrayInitHelper: ArrayInitHelper | null = null;
/** Issue #644: Assignment expected type resolution helper */
private expectedTypeResolver: AssignmentExpectedTypeResolver | null = null;
/** Issue #644: Assignment validation coordinator helper */
private assignmentValidator: AssignmentValidator | null = null;
/** Generator registry for modular code generation (ADR-053) */
private readonly registry: GeneratorRegistry = new GeneratorRegistry();
/** Issue #644: C/C++ mode helper for consolidated mode-specific patterns */
private cppHelper: CppModeHelper | null = null;
/**
* Initialize generator registry with extracted generators.
* Called once before code generation begins.
*/
private initializeGenerators(): void {
// Phase 1: Simple leaf generators
this.registry.registerDeclaration("enum", enumGenerator);
this.registry.registerDeclaration("bitmap", bitmapGenerator);
this.registry.registerDeclaration("register", registerGenerator);
// Note: generateScopedRegister has a different signature (extra scopeName param)
// and is called directly rather than through the registry
// Phase 2: Medium complexity generators
this.registry.registerDeclaration("struct", structGenerator);
// Phase 3: Complex generators
this.registry.registerDeclaration("function", functionGenerator);
// Phase 4: Composite generators
this.registry.registerDeclaration("scope", scopeGenerator);
// Statement generators (ADR-053 A3)
// Note: generateSwitchCase, generateCaseLabel, generateDefaultCase have extra
// switchEnumType param and are called directly rather than through the registry.
// Same for generateForVarDecl, generateForAssignment - internal helpers.
this.registry.registerStatement(
"return",
controlFlowGenerators.generateReturn,
);
this.registry.registerStatement("if", controlFlowGenerators.generateIf);
this.registry.registerStatement(
"while",
controlFlowGenerators.generateWhile,
);
this.registry.registerStatement(
"do-while",
controlFlowGenerators.generateDoWhile,
);
this.registry.registerStatement("for", controlFlowGenerators.generateFor);
this.registry.registerStatement("switch", switchGenerators.generateSwitch);
this.registry.registerStatement("critical", generateCriticalStatement);
// Expression generators (ADR-053 A2)
this.registry.registerExpression(
"expression",
expressionGenerators.generateExpression,
);
this.registry.registerExpression(
"ternary",
expressionGenerators.generateTernaryExpr,
);
this.registry.registerExpression("or", binaryExprGenerators.generateOrExpr);
this.registry.registerExpression(
"and",
binaryExprGenerators.generateAndExpr,
);
this.registry.registerExpression(
"equality",
binaryExprGenerators.generateEqualityExpr,
);
this.registry.registerExpression(
"relational",
binaryExprGenerators.generateRelationalExpr,
);
this.registry.registerExpression(
"bitwise-or",
binaryExprGenerators.generateBitwiseOrExpr,
);
this.registry.registerExpression(
"bitwise-xor",
binaryExprGenerators.generateBitwiseXorExpr,
);
this.registry.registerExpression(
"bitwise-and",
binaryExprGenerators.generateBitwiseAndExpr,
);
this.registry.registerExpression(
"shift",
binaryExprGenerators.generateShiftExpr,
);
this.registry.registerExpression(
"additive",
binaryExprGenerators.generateAdditiveExpr,
);
this.registry.registerExpression(
"multiplicative",
binaryExprGenerators.generateMultiplicativeExpr,
);
this.registry.registerExpression("unary", generateUnaryExpr);
this.registry.registerExpression("literal", generateLiteral);
}
/**
* Invoke a registered statement generator by name.
* Reduces boilerplate in wrapper methods.
*/
private invokeStatement(name: string, ctx: ParserRuleContext): string {
const generator = this.registry.getStatement(name);
Iif (!generator) {
throw new Error(`${name} statement generator not registered`);
}
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
/**
* Invoke a registered expression generator by name.
* Reduces boilerplate in wrapper methods.
*/
private invokeExpression(name: string, ctx: ParserRuleContext): string {
const generator = this.registry.getExpression(name);
Iif (!generator) {
throw new Error(`${name} expression generator not registered`);
}
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
private generatorsInitialized = false;
// ===========================================================================
// IOrchestrator Implementation (ADR-053)
// ===========================================================================
/**
* Get read-only input context for generators.
* Contains all the information generators need to produce code.
*/
getInput(): IGeneratorInput {
return {
symbolTable: CodeGenState.symbolTable,
symbols: CodeGenState.symbols,
typeRegistry: CodeGenState.typeRegistry,
functionSignatures: CodeGenState.functionSignatures,
knownFunctions: CodeGenState.knownFunctions,
knownStructs: CodeGenState.symbols?.knownStructs ?? new Set(),
constValues: CodeGenState.constValues,
callbackTypes: CodeGenState.callbackTypes,
callbackFieldTypes: CodeGenState.callbackFieldTypes,
targetCapabilities: CodeGenState.targetCapabilities,
debugMode: CodeGenState.debugMode,
};
}
/**
* Get a snapshot of the current generation state.
* Represents where we are in the AST traversal.
*/
getState(): IGeneratorState {
return {
currentScope: CodeGenState.currentScope,
indentLevel: CodeGenState.indentLevel,
inFunctionBody: CodeGenState.inFunctionBody,
currentParameters: CodeGenState.currentParameters,
localVariables: CodeGenState.localVariables,
localArrays: CodeGenState.localArrays,
expectedType: CodeGenState.expectedType,
selfIncludeAdded: CodeGenState.selfIncludeAdded, // Issue #369
// Issue #644: Postfix expression state
scopeMembers: CodeGenState.scopeMembers,
mainArgsName: CodeGenState.mainArgsName,
floatBitShadows: CodeGenState.floatBitShadows,
floatShadowCurrent: CodeGenState.floatShadowCurrent,
lengthCache: CodeGenState.lengthCache,
};
}
/**
* Process effects returned by generators, updating internal state.
* This centralizes all side-effect handling.
*/
applyEffects(effects: readonly TGeneratorEffect[]): void {
for (const effect of effects) {
switch (effect.type) {
// Include effects - delegate to requireInclude()
case "include":
this.requireInclude(effect.header);
break;
case "isr":
this.requireInclude("isr");
break;
// Helper function effects
case "helper":
CodeGenState.usedClampOps.add(
`${effect.operation}_${effect.cnxType}`,
);
break;
case "safe-div":
CodeGenState.usedSafeDivOps.add(
`${effect.operation}_${effect.cnxType}`,
);
break;
// Type registration effects
case "register-type":
CodeGenState.typeRegistry.set(effect.name, effect.info);
break;
case "register-local":
CodeGenState.localVariables.add(effect.name);
if (effect.isArray) {
CodeGenState.localArrays.add(effect.name);
}
break;
case "register-const-value":
CodeGenState.constValues.set(effect.name, effect.value);
break;
// Scope effects (ADR-016)
case "set-scope":
CodeGenState.currentScope = effect.name;
break;
// Function body effects
case "enter-function-body":
CodeGenState.inFunctionBody = true;
CodeGenState.localVariables.clear();
CodeGenState.localArrays.clear();
CodeGenState.floatBitShadows.clear();
CodeGenState.floatShadowCurrent.clear();
break;
case "exit-function-body":
CodeGenState.inFunctionBody = false;
CodeGenState.localVariables.clear();
CodeGenState.localArrays.clear();
CodeGenState.floatBitShadows.clear();
CodeGenState.floatShadowCurrent.clear();
break;
case "set-parameters":
CodeGenState.currentParameters = new Map(effect.params);
break;
case "clear-parameters":
CodeGenState.currentParameters.clear();
break;
// Callback effects
case "register-callback-field":
CodeGenState.callbackFieldTypes.set(effect.key, effect.typeName);
break;
// Array initializer effects
case "set-array-init-count":
CodeGenState.lastArrayInitCount = effect.count;
break;
case "set-array-fill-value":
CodeGenState.lastArrayFillValue = effect.value;
break;
}
}
}
/**
* Register a required include header. Centralizes all include flag management
* to reduce scattered assignments throughout the codebase.
*
* @param header - The header to require (stdint, stdbool, string, etc.)
*/
private requireInclude(header: TIncludeHeader): void {
switch (header) {
case "stdint":
CodeGenState.needsStdint = true;
break;
case "stdbool":
CodeGenState.needsStdbool = true;
break;
case "string":
CodeGenState.needsString = true;
break;
case "cmsis":
CodeGenState.needsCMSIS = true;
break;
case "limits":
CodeGenState.needsLimits = true;
break;
case "isr":
CodeGenState.needsISR = true;
break;
case "float_static_assert":
CodeGenState.needsFloatStaticAssert = true;
break;
case "irq_wrappers":
CodeGenState.needsIrqWrappers = true;
break;
}
}
/**
* Get the current indentation string.
*/
getIndent(): string {
return FormatUtils.indent(CodeGenState.indentLevel);
}
/**
* Resolve an identifier to its fully-scoped name.
* Part of IOrchestrator interface.
* ADR-016: Inside a scope, checks if the identifier is a scope member first.
* Otherwise returns the identifier unchanged (global scope).
*/
resolveIdentifier(identifier: string): string {
// Check current scope first (inner scope shadows outer)
if (CodeGenState.currentScope) {
const members = CodeGenState.scopeMembers.get(CodeGenState.currentScope);
if (members?.has(identifier)) {
return `${CodeGenState.currentScope}_${identifier}`;
}
}
// Fall back to global scope
return identifier;
}
// === Expression Generation (ADR-053 A2) ===
/**
* Generate a C expression from any expression context.
* Part of IOrchestrator interface.
*/
generateExpression(ctx: Parser.ExpressionContext): string {
return this.invokeExpression("expression", ctx);
}
/**
* Issue #477: Generate expression with a specific expected type context.
* Used by return statements to resolve unqualified enum values.
*/
generateExpressionWithExpectedType(
ctx: Parser.ExpressionContext,
expectedType: string | null,
): string {
const savedExpectedType = CodeGenState.expectedType;
CodeGenState.expectedType = expectedType;
const result = this.generateExpression(ctx);
CodeGenState.expectedType = savedExpectedType;
return result;
}
/**
* Generate type translation (C-Next type -> C type).
* Part of IOrchestrator interface.
*/
generateType(ctx: Parser.TypeContext): string {
// Track required includes based on type usage
const requiredInclude = TypeGenerationHelper.getRequiredInclude(ctx);
if (requiredInclude) {
this.requireInclude(requiredInclude);
}
// Generate the C type using the helper with dependencies
return TypeGenerationHelper.generate(ctx, {
currentScope: CodeGenState.currentScope,
isCppScopeSymbol: (name) => this.isCppScopeSymbol(name),
checkNeedsStructKeyword: (name) =>
CodeGenState.symbolTable?.checkNeedsStructKeyword(name) ?? false,
validateCrossScopeVisibility: (scope, member) =>
ScopeResolver.validateCrossScopeVisibility(scope, member),
});
}
/**
* Generate a unary expression.
* Part of IOrchestrator interface.
*/
generateUnaryExpr(ctx: Parser.UnaryExpressionContext): string {
return this.invokeExpression("unary", ctx);
}
/**
* Generate a postfix expression.
* Part of IOrchestrator interface.
* Issue #644: Delegates to extracted PostfixExpressionGenerator.
*/
generatePostfixExpr(ctx: Parser.PostfixExpressionContext): string {
const result = generatePostfixExpression(
ctx,
this.getInput(),
this.getState(),
this,
);
this.applyEffects(result.effects);
return result.code;
}
/**
* Generate the full precedence chain from or-expression down.
* Part of IOrchestrator interface.
*/
generateOrExpr(ctx: Parser.OrExpressionContext): string {
return this.invokeExpression("or", ctx);
}
// === Type Utilities ===
/**
* Check if a type name is a known struct.
* Part of IOrchestrator interface.
*/
isKnownStruct(typeName: string): boolean {
return SymbolLookupHelper.isKnownStruct(
CodeGenState.symbols?.knownStructs,
CodeGenState.symbols?.knownBitmaps,
CodeGenState.symbolTable,
typeName,
);
}
/**
* Check if a type is a float type.
* Part of IOrchestrator interface - delegates to TypeResolver.
*/
isFloatType(typeName: string): boolean {
return this.typeResolver!.isFloatType(typeName);
}
/**
* Check if a type is an integer type.
* Part of IOrchestrator interface - delegates to TypeResolver.
*/
isIntegerType(typeName: string): boolean {
return this.typeResolver!.isIntegerType(typeName);
}
/**
* Check if a function is defined in C-Next.
* Part of IOrchestrator interface.
*/
isCNextFunction(name: string): boolean {
return SymbolLookupHelper.isCNextFunctionCombined(
CodeGenState.knownFunctions,
CodeGenState.symbolTable,
name,
);
}
// === Expression Analysis ===
/**
* Get the enum type of an expression.
* Part of IOrchestrator interface - delegates to private implementation.
*/
getExpressionEnumType(
ctx: Parser.ExpressionContext | Parser.RelationalExpressionContext,
): string | null {
return EnumTypeResolver.resolve(ctx);
}
/**
* Check if an expression is an integer literal or variable.
* Part of IOrchestrator interface - delegates to private implementation.
*/
isIntegerExpression(
ctx: Parser.ExpressionContext | Parser.RelationalExpressionContext,
): boolean {
return this._isIntegerExpression(ctx);
}
/**
* Check if an expression is a string type.
* Part of IOrchestrator interface.
* ADR-045: Used to detect string comparisons and generate strcmp().
* Issue #137: Extended to handle array element access (e.g., names[0])
*/
isStringExpression(ctx: Parser.RelationalExpressionContext): boolean {
const text = ctx.getText();
// Check for string literals
if (text.startsWith('"') && text.endsWith('"')) {
return true;
}
// Check if it's a simple variable of string type
if (/^[a-zA-Z_]\w*$/.exec(text)) {
const typeInfo = CodeGenState.typeRegistry.get(text);
if (typeInfo?.isString) {
return true;
}
}
// Issue #137: Check for array element access (e.g., names[0], arr[i])
// Pattern: identifier[expression] or identifier[expression][expression]...
// BUT NOT if accessing .length/.capacity/.size (those return numbers, not strings)
const arrayAccessMatch = /^([a-zA-Z_]\w*)\[/.exec(text);
if (arrayAccessMatch) {
// ADR-045: String properties return numeric values, not strings
Iif (
text.endsWith(".length") ||
text.endsWith(".capacity") ||
text.endsWith(".size")
) {
return false;
}
const arrayName = arrayAccessMatch[1];
const typeInfo = CodeGenState.typeRegistry.get(arrayName);
// Check if base type is a string type
if (
typeInfo?.isString ||
(typeInfo?.baseType && TypeCheckUtils.isString(typeInfo.baseType))
) {
return true;
}
}
return false;
}
/**
* Get type of additive expression.
* Part of IOrchestrator interface - delegates to private implementation.
*/
getAdditiveExpressionType(
ctx: Parser.AdditiveExpressionContext,
): string | null {
return this._getAdditiveExpressionType(ctx);
}
/**
* Extract operators from parse tree children in correct order.
* Part of IOrchestrator interface - delegates to CodegenParserUtils.
*/
getOperatorsFromChildren(ctx: ParserRuleContext): string[] {
return CodegenParserUtils.getOperatorsFromChildren(ctx);
}
// === Validation ===
/**
* Validate cross-scope member visibility.
* Part of IOrchestrator interface - delegates to private implementation.
*/
validateCrossScopeVisibility(
scopeName: string,
memberName: string,
isGlobalAccess: boolean = false,
): void {
ScopeResolver.validateCrossScopeVisibility(
scopeName,
memberName,
isGlobalAccess,
);
}
/**
* Validate shift amount is within type bounds.
* Part of IOrchestrator interface - delegates to TypeValidator.
*/
validateShiftAmount(
leftType: string,
rightExpr: Parser.AdditiveExpressionContext,
op: string,
ctx: Parser.ShiftExpressionContext,
): void {
this.typeValidator!.validateShiftAmount(leftType, rightExpr, op, ctx);
}
/**
* Validate ternary condition is a comparison (ADR-022).
* Part of IOrchestrator interface - delegates to TypeValidator.
*/
validateTernaryCondition(condition: Parser.OrExpressionContext): void {
this.typeValidator!.validateTernaryCondition(condition);
}
/**
* Validate no nested ternary expressions (ADR-022).
* Part of IOrchestrator interface - delegates to TypeValidator.
*/
validateNoNestedTernary(
expr: Parser.OrExpressionContext,
branchName: string,
): void {
this.typeValidator!.validateNoNestedTernary(expr, branchName);
}
// === Function Call Helpers (ADR-053 A2 Phase 5) ===
/**
* Get simple identifier from expression, or null if complex.
* Part of IOrchestrator interface - delegates to CodegenParserUtils.
*/
getSimpleIdentifier(ctx: Parser.ExpressionContext): string | null {
return CodegenParserUtils.getSimpleIdentifier(ctx);
}
/**
* Generate function argument with pass-by-reference handling.
* Part of IOrchestrator interface - delegates to private implementation.
*/
generateFunctionArg(
ctx: Parser.ExpressionContext,
targetParamBaseType?: string,
): string {
return this._generateFunctionArg(ctx, targetParamBaseType);
}
/**
* Check if a value is const.
* Part of IOrchestrator interface - delegates to TypeValidator.
*/
isConstValue(name: string): boolean {
return this.typeValidator!.isConstValue(name);
}
/**
* Get known enums set for pass-by-value detection.
* Part of IOrchestrator interface.
*/
getKnownEnums(): ReadonlySet<string> {
return CodeGenState.symbols!.knownEnums;
}
/**
* Issue #304: Check if we're generating C++ output.
* Part of IOrchestrator interface.
*/
isCppMode(): boolean {
return CodeGenState.cppMode;
}
/**
* Issue #304: Check if a type is a C++ enum class (scoped enum).
* These require explicit casts to integer types in C++.
* Part of IOrchestrator interface.
*/
isCppEnumClass(typeName: string): boolean {
return SymbolLookupHelper.isCppEnumClass(
CodeGenState.symbolTable,
typeName,
);
}
/**
* Issue #304: Get the type of an expression.
* Part of IOrchestrator interface.
*/
getExpressionType(ctx: Parser.ExpressionContext): string | null {
return this.typeResolver!.getExpressionType(ctx);
}
/**
* Generate a block (curly braces with statements).
* Part of IOrchestrator interface (ADR-053 A3).
*/
generateBlock(ctx: Parser.BlockContext): string {
const lines: string[] = ["{"];
const innerIndent = FormatUtils.indent(1); // One level of relative indentation
for (const stmt of ctx.statement()) {
// Temporarily increment for any nested context that needs absolute level
CodeGenState.indentLevel++;
const stmtCode = this.generateStatement(stmt);
CodeGenState.indentLevel--;
if (stmtCode) {
// Add one level of indent to each line (relative indentation)
const indentedLines = stmtCode
.split("\n")
.map((line) => innerIndent + line);
lines.push(indentedLines.join("\n"));
}
}
lines.push("}");
return lines.join("\n");
}
/**
* Validate no early exits (return/break) in critical blocks.
* Part of IOrchestrator interface (ADR-053 A3).
*/
validateNoEarlyExits(ctx: Parser.BlockContext): void {
this.typeValidator!.validateNoEarlyExits(ctx);
}
/**
* Generate a single statement.
* Part of IOrchestrator interface (ADR-053 A3).
*/
generateStatement(ctx: Parser.StatementContext): string {
let result = "";
if (ctx.variableDeclaration()) {
result = this.generateVariableDecl(ctx.variableDeclaration()!);
} else if (ctx.assignmentStatement()) {
result = this.generateAssignment(ctx.assignmentStatement()!);
} else if (ctx.expressionStatement()) {
result =
this.generateExpression(ctx.expressionStatement()!.expression()) + ";";
} else if (ctx.ifStatement()) {
result = this.generateIf(ctx.ifStatement()!);
} else if (ctx.whileStatement()) {
result = this.generateWhile(ctx.whileStatement()!);
} else if (ctx.doWhileStatement()) {
result = this.generateDoWhile(ctx.doWhileStatement()!);
} else if (ctx.forStatement()) {
result = this.generateFor(ctx.forStatement()!);
} else if (ctx.switchStatement()) {
result = this.generateSwitch(ctx.switchStatement()!);
} else if (ctx.returnStatement()) {
result = this.generateReturn(ctx.returnStatement()!);
} else if (ctx.criticalStatement()) {
// ADR-050: Critical statement for atomic multi-variable operations
result = this.generateCriticalStatement(ctx.criticalStatement()!);
E} else if (ctx.block()) {
result = this.generateBlock(ctx.block()!);
}
// Issue #250: Prepend any pending temp variable declarations (C++ mode)
if (CodeGenState.pendingTempDeclarations.length > 0) {
const tempDecls = CodeGenState.pendingTempDeclarations.join("\n");
CodeGenState.pendingTempDeclarations = [];
return tempDecls + "\n" + result;
}
return result;
}
/**
* Issue #250: Flush pending temp variable declarations.
* Returns declarations as a single string and clears the pending list.
* Part of IOrchestrator interface.
*/
flushPendingTempDeclarations(): string {
if (CodeGenState.pendingTempDeclarations.length === 0) {
return "";
}
const decls = CodeGenState.pendingTempDeclarations.join("\n");
CodeGenState.pendingTempDeclarations = [];
return decls;
}
/**
* Get indentation string for current level.
* Part of IOrchestrator interface (ADR-053 A3).
*/
indent(text: string): string {
return FormatUtils.indentAllLines(text, CodeGenState.indentLevel);
}
/**
* Validate switch statement.
* Part of IOrchestrator interface (ADR-053 A3).
*/
validateSwitchStatement(
ctx: Parser.SwitchStatementContext,
switchExpr: Parser.ExpressionContext,
): void {
this.typeValidator!.validateSwitchStatement(ctx, switchExpr);
}
/**
* Validate do-while condition.
* Part of IOrchestrator interface (ADR-053 A3).
*/
validateDoWhileCondition(ctx: Parser.ExpressionContext): void {
this.typeValidator!.validateDoWhileCondition(ctx);
}
/**
* Issue #254: Validate no function calls in condition (E0702).
* Part of IOrchestrator interface (ADR-053 A3).
*/
validateConditionNoFunctionCall(
ctx: Parser.ExpressionContext,
conditionType: string,
): void {
this.typeValidator!.validateConditionNoFunctionCall(ctx, conditionType);
}
/**
* Issue #254: Validate no function calls in ternary condition (E0702).
* Part of IOrchestrator interface (ADR-053 A2).
*/
validateTernaryConditionNoFunctionCall(
ctx: Parser.OrExpressionContext,
): void {
this.typeValidator!.validateTernaryConditionNoFunctionCall(ctx);
}
/**
* Generate an assignment target.
* Part of IOrchestrator interface (ADR-053 A3).
* Issue #387: Unified postfix chain - all patterns now use IDENTIFIER postfixTargetOp*
*/
generateAssignmentTarget(ctx: Parser.AssignmentTargetContext): string {
const hasGlobal = ctx.GLOBAL() !== null;
const hasThis = ctx.THIS() !== null;
const identifier = ctx.IDENTIFIER()?.getText();
const postfixOps = ctx.postfixTargetOp();
// SonarCloud S3776: Use SimpleIdentifierResolver for simple identifier case
if (!hasGlobal && !hasThis && postfixOps.length === 0 && identifier) {
return SimpleIdentifierResolver.resolve(
identifier,
this._buildSimpleIdentifierDeps(),
);
}
// SonarCloud S3776: Use BaseIdentifierBuilder for base identifier
const safeIdentifier = identifier ?? "";
const { result: baseResult, firstId } = BaseIdentifierBuilder.build(
safeIdentifier,
hasGlobal,
hasThis,
CodeGenState.currentScope,
);
// No postfix operations - return base
if (postfixOps.length === 0) {
return baseResult;
}
// SonarCloud S3776: Use PostfixChainBuilder for postfix operations
const operations = this._extractPostfixOperations(postfixOps);
const postfixDeps = this._buildPostfixChainDeps(
firstId,
hasGlobal,
hasThis,
);
return PostfixChainBuilder.build(
baseResult,
firstId,
operations,
postfixDeps,
);
}
/**
* Generate array dimensions.
* Part of IOrchestrator interface (ADR-053 A3).
*/
generateArrayDimensions(dims: Parser.ArrayDimensionContext[]): string {
return dims.map((d) => this.generateArrayDimension(d)).join("");
}
// === strlen Optimization (ADR-053 A3) ===
/**
* Count string length accesses for caching.
* Part of IOrchestrator interface (ADR-053 A3).
*/
countStringLengthAccesses(
ctx: Parser.ExpressionContext,
): Map<string, number> {
// Issue #644: Delegate to extracted StringLengthCounter
return this.stringLengthCounter!.countExpression(ctx);
}
/**
* Count block length accesses.
* Part of IOrchestrator interface (ADR-053 A3).
*/
countBlockLengthAccesses(
ctx: Parser.BlockContext,
counts: Map<string, number>,
): void {
// Issue #644: Delegate to extracted StringLengthCounter
this.stringLengthCounter!.countBlockInto(ctx, counts);
}
/**
* Setup length cache and return declarations.
* Part of IOrchestrator interface (ADR-053 A3).
*/
setupLengthCache(counts: Map<string, number>): string {
const declarations: string[] = [];
const cache = new Map<string, string>();
for (const [varName, count] of counts) {
Eif (count >= 2) {
const tempVar = `_${varName}_len`;
cache.set(varName, tempVar);
declarations.push(`size_t ${tempVar} = strlen(${varName});`);
}
}
if (declarations.length > 0) {
CodeGenState.lengthCache = cache;
return declarations.join("\n") + "\n";
}
return "";
}
/**
* Clear length cache.
* Part of IOrchestrator interface (ADR-053 A3).
*/
clearLengthCache(): void {
CodeGenState.lengthCache = null;
}
/**
* Register a local variable.
* Part of IOrchestrator interface (ADR-053 A3).
*/
registerLocalVariable(name: string): void {
CodeGenState.localVariables.add(name);
}
// === Declaration Generation (ADR-053 A4) ===
/** Generate single array dimension */
generateArrayDimension(dim: Parser.ArrayDimensionContext): string {
if (dim.expression()) {
// Bug #8: At file scope, resolve const values to numeric literals
// because C doesn't allow const variables as array sizes at file scope
if (!CodeGenState.inFunctionBody) {
const constValue = this.tryEvaluateConstant(dim.expression()!);
if (constValue !== undefined) {
return `[${constValue}]`;
}
}
return `[${this.generateExpression(dim.expression()!)}]`;
}
return "[]";
}
/** Generate parameter list for function signature */
generateParameterList(ctx: Parser.ParameterListContext): string {
return ctx
.parameter()
.map((p) => this.generateParameter(p))
.join(", ");
}
/** Get the raw type name without C conversion */
getTypeName(ctx: Parser.TypeContext): string {
// ADR-016: Handle this.Type for scoped types (e.g., this.State -> Motor_State)
if (ctx.scopedType()) {
const typeName = ctx.scopedType()!.IDENTIFIER().getText();
Eif (CodeGenState.currentScope) {
return `${CodeGenState.currentScope}_${typeName}`;
}
return typeName;
}
// Issue #478: Handle global.Type for global types inside scope
if (ctx.globalType()) {
return ctx.globalType()!.IDENTIFIER().getText();
}
// ADR-016: Handle Scope.Type from outside scope (e.g., Motor.State -> Motor_State)
// Issue #388: Also handles C++ namespace types
if (ctx.qualifiedType()) {
const identifiers = ctx.qualifiedType()!.IDENTIFIER();
const identifierNames = identifiers.map((id) => id.getText());
return this.resolveQualifiedType(identifierNames);
}
if (ctx.userType()) {
return ctx.userType()!.getText();
}
if (ctx.primitiveType()) {
return ctx.primitiveType()!.getText();
}
return ctx.getText();
}
/** Try to evaluate a constant expression at compile time */
tryEvaluateConstant(ctx: Parser.ExpressionContext): number | undefined {
return ArrayDimensionParser.parseSingleDimension(ctx, {
constValues: CodeGenState.constValues,
typeWidths: TYPE_WIDTH,
isKnownStruct: (name) => this.isKnownStruct(name),
});
}
/**
* Get zero initializer for a type.
* ADR-015: Get the appropriate zero initializer for a type
* ADR-017: Handle enum types by initializing to first member
*/
getZeroInitializer(typeCtx: Parser.TypeContext, isArray: boolean): string {
// Issue #379: Arrays need element type checking for C++ classes
if (isArray) {
return this._getArrayZeroInitializer(typeCtx);
}
// Handle named types (scoped, global, qualified, user)
const resolved = this._resolveTypeNameFromContext(typeCtx);
if (resolved) {
// Check if enum
if (CodeGenState.symbols!.knownEnums.has(resolved.name)) {
return this._getEnumZeroValue(resolved.name, resolved.separator);
}
// Check if C++ type needing {} (only for userType, not qualified/scoped/global)
if (resolved.checkCppType && this._needsEmptyBraceInit(resolved.name)) {
return "{}";
}
return "{0}";
}
// Issue #295: C++ template types use value initialization {}
Iif (typeCtx.templateType()) {
return "{}";
}
// Primitive types use lookup map
if (typeCtx.primitiveType()) {
const primType = typeCtx.primitiveType()!.getText();
return CodeGenerator.PRIMITIVE_ZERO_VALUES.get(primType) ?? "0";
}
// Default fallback
return "0";
}
// === Validation (IOrchestrator A4) ===
/** Validate that a literal value fits in the target type */
validateLiteralFitsType(literal: string, typeName: string): void {
this._validateLiteralFitsType(literal, typeName);
}
/** Validate type conversion is allowed */
validateTypeConversion(targetType: string, sourceType: string | null): void {
this._validateTypeConversion(targetType, sourceType);
}
// === String Helpers (IOrchestrator A4) ===
/** Get the length of a string literal */
getStringLiteralLength(literal: string): number {
return StringUtils.literalLength(literal);
}
/** Get string concatenation operands if expression is a concat */
getStringConcatOperands(ctx: Parser.ExpressionContext): {
left: string;
right: string;
leftCapacity: number;
rightCapacity: number;
} | null {
return this._getStringConcatOperands(ctx);
}
/** Get substring operands if expression is a substring call */
getSubstringOperands(ctx: Parser.ExpressionContext): {
source: string;
start: string;
length: string;
sourceCapacity: number;
} | null {
return this._getSubstringOperands(ctx);
}
/** Get the capacity of a string expression */
getStringExprCapacity(exprCode: string): number | null {
// String literal - capacity equals content length
if (exprCode.startsWith('"') && exprCode.endsWith('"')) {
return StringUtils.literalLength(exprCode);
}
// Variable - check type registry
const identifierRegex = /^[a-zA-Z_]\w*$/;
Eif (identifierRegex.test(exprCode)) {
const typeInfo = CodeGenState.typeRegistry.get(exprCode);
Eif (typeInfo?.isString && typeInfo.stringCapacity !== undefined) {
return typeInfo.stringCapacity;
}
}
return null;
}
// === Parameter Management (IOrchestrator A4) ===
/** Set current function parameters */
setParameters(paramList: Parser.ParameterListContext | null): void {
this._setParameters(paramList);
}
/** Clear current function parameters */
clearParameters(): void {
this._clearParameters();
}
/** Check if a callback type is used as a struct field type */
isCallbackTypeUsedAsFieldType(funcName: string): boolean {
for (const callbackType of CodeGenState.callbackFieldTypes.values()) {
if (callbackType === funcName) {
return true;
}
}
return false;
}
// === Scope Management (A4) ===
setCurrentScope(name: string | null): void {
CodeGenState.currentScope = name;
CodeGenState.currentScope = name;
}
/**
* Issue #269: Set the current function name for pass-by-value lookup.
* Part of IOrchestrator interface.
*/
setCurrentFunctionName(name: string | null): void {
CodeGenState.currentFunctionName = name;
CodeGenState.currentFunctionName = name;
}
/**
* Issue #477: Get the current function's return type for enum inference.
* Used by return statement generation to set expectedType.
*/
getCurrentFunctionReturnType(): string | null {
return CodeGenState.currentFunctionReturnType;
}
/**
* Issue #477: Set the current function's return type for enum inference.
*/
setCurrentFunctionReturnType(returnType: string | null): void {
CodeGenState.currentFunctionReturnType = returnType;
CodeGenState.currentFunctionReturnType = returnType;
}
// === Function Body Management (A4) ===
enterFunctionBody(): void {
CodeGenState.localVariables.clear();
CodeGenState.floatBitShadows.clear();
CodeGenState.floatShadowCurrent.clear();
// Issue #558: modifiedParameters tracking removed - uses analysis-phase results
CodeGenState.inFunctionBody = true;
// Sync with CodeGenState
CodeGenState.enterFunctionBody();
}
exitFunctionBody(): void {
CodeGenState.inFunctionBody = false;
CodeGenState.localVariables.clear();
CodeGenState.floatBitShadows.clear();
CodeGenState.floatShadowCurrent.clear();
CodeGenState.mainArgsName = null;
// Sync with CodeGenState
CodeGenState.exitFunctionBody();
CodeGenState.mainArgsName = null;
}
setMainArgsName(name: string | null): void {
CodeGenState.mainArgsName = name;
CodeGenState.mainArgsName = name;
}
isMainFunctionWithArgs(
name: string,
paramList: Parser.ParameterListContext | null,
): boolean {
return CodegenParserUtils.isMainFunctionWithArgs(name, paramList);
}
/**
* ADR-029: Generate typedef for callback type
*/
generateCallbackTypedef(funcName: string): string | null {
const callbackInfo = CodeGenState.callbackTypes.get(funcName);
Iif (!callbackInfo) {
return null;
}
const paramList =
callbackInfo.parameters.length > 0
? callbackInfo.parameters
.map((p) => {
const constMod = p.isConst ? "const " : "";
Iif (p.isArray) {
// Array parameters: type name[]
return `${constMod}${p.type} ${p.name}${p.arrayDims}`;
} else if (p.isPointer) {
// ADR-006: Non-array, non-callback parameters become pointers
return `${constMod}${p.type}*`;
} else E{
// ADR-029: Callback parameters are already function pointers
return `${p.type}`;
}
})
.join(", ")
: "void";
return `\ntypedef ${callbackInfo.returnType} (*${callbackInfo.typedefName})(${paramList});\n`;
}
/**
* Issue #268: Store unmodified parameters for a function.
* Maps function name -> Set of parameter names that were NOT modified.
* Used by Pipeline to update symbol info before header generation.
*/
private readonly functionUnmodifiedParams: Map<string, Set<string>> =
new Map();
/**
* Issue #268: Get unmodified parameters info for all functions.
* Returns map of function name -> Set of unmodified parameter names.
*/
getFunctionUnmodifiedParams(): ReadonlyMap<string, Set<string>> {
return this.functionUnmodifiedParams;
}
/**
* Issue #268: Update symbol parameters with auto-const info.
* Issue #558: Now uses analysis-phase results for modification tracking.
*/
updateFunctionParamsAutoConst(functionName: string): void {
// Collect unmodified parameters for this function using analysis results
const unmodifiedParams = new Set<string>();
const modifiedSet = CodeGenState.modifiedParameters.get(functionName);
for (const [paramName] of CodeGenState.currentParameters) {
if (!modifiedSet?.has(paramName)) {
unmodifiedParams.add(paramName);
}
}
this.functionUnmodifiedParams.set(functionName, unmodifiedParams);
}
/**
* Issue #268: Mark a parameter as modified for auto-const tracking.
* Issue #558: Now a no-op - analysis phase handles all modification tracking
* including transitive propagation across function calls and files.
*/
markParameterModified(_paramName: string): void {
// No-op: Analysis phase (analyzePassByValue) now handles all modification
// tracking including cross-file and transitive propagation.
}
/**
* Issue #558: Check if a parameter is modified using analysis-phase results.
* This is the unified source of truth for modification tracking.
*/
private _isCurrentParameterModified(paramName: string): boolean {
const funcName = CodeGenState.currentFunctionName;
Iif (!funcName) return false;
return (
CodeGenState.modifiedParameters.get(funcName)?.has(paramName) ?? false
);
}
/**
* Issue #558: Get the modified parameters map for cross-file propagation.
* Returns function name -> set of modified parameter names.
*/
getModifiedParameters(): ReadonlyMap<string, Set<string>> {
return CodeGenState.modifiedParameters;
}
/**
* Issue #558: Set cross-file modification data to inject during analyzePassByValue.
* Called by Pipeline before generate() to share modifications from previously processed files.
*/
setCrossFileModifications(
modifications: ReadonlyMap<string, ReadonlySet<string>>,
paramLists: ReadonlyMap<string, readonly string[]>,
): void {
CodeGenState.pendingCrossFileModifications = modifications;
CodeGenState.pendingCrossFileParamLists = paramLists;
}
/**
* Issue #558: Get the function parameter lists for cross-file propagation.
*/
getFunctionParamLists(): ReadonlyMap<string, string[]> {
return CodeGenState.functionParamLists;
}
/**
* Issue #561: Analyze modifications in a parse tree without full code generation.
* Used by Pipeline.transpileSource() to collect modification info from includes
* for cross-file const inference (unified with Pipeline.run() behavior).
*
* Issue #565: Now accepts optional cross-file data for transitive propagation.
* When a file calls a function from an included file that modifies its param,
* we need that info available during analysis to propagate correctly.
*
* Returns the modifications and param lists discovered in this tree.
*/
analyzeModificationsOnly(
tree: Parser.ProgramContext,
crossFileModifications?: ReadonlyMap<string, ReadonlySet<string>>,
crossFileParamLists?: ReadonlyMap<string, readonly string[]>,
): {
modifications: Map<string, Set<string>>;
paramLists: Map<string, string[]>;
} {
// Save current state
const savedModifications = new Map(CodeGenState.modifiedParameters);
const savedParamLists = new Map(CodeGenState.functionParamLists);
const savedCallGraph = new Map(CodeGenState.functionCallGraph);
// Clear for fresh analysis
CodeGenState.modifiedParameters.clear();
CodeGenState.functionParamLists.clear();
CodeGenState.functionCallGraph.clear();
// Issue #565: Inject cross-file data BEFORE collecting this file's info
this.injectCrossFileData(crossFileModifications, crossFileParamLists);
// Track which functions were injected (not from this file)
const injectedFuncs = new Set(crossFileModifications?.keys() ?? []);
// Run modification analysis on the tree (adds to what was injected)
this.collectFunctionParametersAndModifications(tree);
// Issue #565: Run transitive propagation with full context
TransitiveModificationPropagator.propagate(
CodeGenState.functionCallGraph,
CodeGenState.functionParamLists,
CodeGenState.modifiedParameters,
);
// Capture results - only include functions NOT from cross-file injection
const modifications = this.extractThisFileModifications(
crossFileModifications,
injectedFuncs,
);
const paramLists = this.extractThisFileParamLists(crossFileParamLists);
// Restore previous state
this.restoreMapState(CodeGenState.modifiedParameters, savedModifications);
this.restoreMapState(CodeGenState.functionParamLists, savedParamLists);
this.restoreMapState(CodeGenState.functionCallGraph, savedCallGraph);
return { modifications, paramLists };
}
/**
* Inject cross-file modification data for transitive propagation.
*/
private injectCrossFileData(
crossFileModifications?: ReadonlyMap<string, ReadonlySet<string>>,
crossFileParamLists?: ReadonlyMap<string, readonly string[]>,
): void {
if (crossFileModifications) {
for (const [funcName, params] of crossFileModifications) {
CodeGenState.modifiedParameters.set(funcName, new Set(params));
}
}
if (crossFileParamLists) {
for (const [funcName, params] of crossFileParamLists) {
CodeGenState.functionParamLists.set(funcName, [...params]);
}
}
}
/**
* Extract modifications discovered in this file (excluding injected cross-file data).
*/
private extractThisFileModifications(
crossFileModifications:
| ReadonlyMap<string, ReadonlySet<string>>
| undefined,
injectedFuncs: Set<string>,
): Map<string, Set<string>> {
const modifications = new Map<string, Set<string>>();
for (const [funcName, params] of CodeGenState.modifiedParameters) {
if (!injectedFuncs.has(funcName)) {
// Function defined in this file - include all its modifications
modifications.set(funcName, new Set(params));
continue;
}
// Check if we discovered new modifications for an injected function
const injectedParams = crossFileModifications?.get(funcName);
Iif (!injectedParams) continue;
const newParams = this.findNewParams(params, injectedParams);
Iif (newParams.size > 0) {
modifications.set(funcName, newParams);
}
}
return modifications;
}
/**
* Find params that are in current set but not in injected set.
*/
private findNewParams(
params: Set<string>,
injectedParams: ReadonlySet<string>,
): Set<string> {
return SetMapHelper.findNewItems(params, injectedParams);
}
/**
* Extract param lists discovered in this file (excluding injected cross-file data).
*/
private extractThisFileParamLists(
crossFileParamLists?: ReadonlyMap<string, readonly string[]>,
): Map<string, string[]> {
return SetMapHelper.copyArrayValues(
SetMapHelper.filterExclude(
CodeGenState.functionParamLists,
crossFileParamLists,
),
);
}
/**
* Restore a map's state by clearing and repopulating from saved data.
*/
private restoreMapState<K, V>(target: Map<K, V>, saved: Map<K, V>): void {
SetMapHelper.restoreMapState(target, saved);
}
/**
* Issue #268: Check if a callee function's parameter at given index is modified.
* Returns true if the callee modifies that parameter (should not have const).
*/
isCalleeParameterModified(funcName: string, paramIndex: number): boolean {
const unmodifiedParams = this.functionUnmodifiedParams.get(funcName);
Iif (!unmodifiedParams) {
// Callee not yet processed - conservatively return false (assume unmodified)
// This means we won't mark our param as modified, which may cause a C compiler error
// if the callee actually modifies the param. The C compiler will catch this.
return false;
}
// Get the parameter name at the given index from the function signature
const sig = CodeGenState.functionSignatures.get(funcName);
Iif (!sig || paramIndex >= sig.parameters.length) {
return false;
}
const paramName = sig.parameters[paramIndex].name;
// If the param is NOT in the unmodified set, it was modified
return !unmodifiedParams.has(paramName);
}
/**
* Issue #268: Check if a name is a parameter of the current function.
*/
isCurrentParameter(name: string): boolean {
return CodeGenState.currentParameters.has(name);
}
// === Postfix Expression Helpers (Issue #644) ===
/**
* Generate a primary expression.
* Part of IOrchestrator interface for PostfixExpressionGenerator.
*/
generatePrimaryExpr(ctx: Parser.PrimaryExpressionContext): string {
// ADR-023: sizeof expression - sizeof(u32) or sizeof(variable)
if (ctx.sizeofExpression()) {
return this.generateSizeofExpr(ctx.sizeofExpression()!);
}
// ADR-017: Cast expression - (u8)State.IDLE
if (ctx.castExpression()) {
return this.generateCastExpression(ctx.castExpression()!);
}
// ADR-014: Struct initializer - Point { x: 10, y: 20 }
if (ctx.structInitializer()) {
return this.generateStructInitializer(ctx.structInitializer()!);
}
// ADR-035: Array initializer - [1, 2, 3] or [0*]
if (ctx.arrayInitializer()) {
return this.generateArrayInitializer(ctx.arrayInitializer()!);
}
// ADR-016: Handle 'this' keyword for scope-local reference
const text = ctx.getText();
if (text === "this") {
return this._resolveThisKeyword();
}
// ADR-016: Handle 'global' keyword for global reference
if (text === "global") {
return "__GLOBAL_PREFIX__";
}
if (ctx.IDENTIFIER()) {
return this._resolveIdentifierExpression(ctx.IDENTIFIER()!.getText());
}
if (ctx.literal()) {
return this._generateLiteralExpression(ctx.literal()!);
}
Eif (ctx.expression()) {
return `(${this.generateExpression(ctx.expression()!)})`;
}
return "";
}
/**
* Check if a name is a known scope.
* Part of IOrchestrator interface.
*/
isKnownScope(name: string): boolean {
return SymbolLookupHelper.isKnownScope(
CodeGenState.symbols?.knownScopes,
CodeGenState.symbolTable,
name,
);
}
/**
* Check if a symbol is a C++ scope symbol (namespace, class, enum).
* Part of IOrchestrator interface.
*/
isCppScopeSymbol(name: string): boolean {
return CppNamespaceUtils.isCppNamespace(
name,
CodeGenState.symbolTable ?? undefined,
);
}
/**
* Get the separator for scope access (:: for C++, _ for C-Next).
* Part of IOrchestrator interface - delegates to FormatUtils.
*/
getScopeSeparator(isCppAccess: boolean): string {
return FormatUtils.getScopeSeparator(isCppAccess);
}
/**
* Get struct field info for .length calculations.
* Part of IOrchestrator interface.
*/
getStructFieldInfo(
structType: string,
fieldName: string,
): { type: string; dimensions?: (number | string)[] } | null {
// First check SymbolTable (C header structs)
Eif (CodeGenState.symbolTable) {
const fieldInfo = CodeGenState.symbolTable.getStructFieldInfo(
structType,
fieldName,
);
if (fieldInfo) {
return {
type: fieldInfo.type,
dimensions: fieldInfo.arrayDimensions,
};
}
}
// Fall back to local C-Next struct fields
const localFields = CodeGenState.symbols!.structFields.get(structType);
if (localFields) {
const fieldType = localFields.get(fieldName);
if (fieldType) {
const fieldDimensions =
CodeGenState.symbols!.structFieldDimensions.get(structType);
const dimensions = fieldDimensions?.get(fieldName);
return {
type: fieldType,
dimensions: dimensions ? [...dimensions] : undefined,
};
}
}
return null;
}
/**
* Get member type info for struct access chains.
* Part of IOrchestrator interface.
*/
getMemberTypeInfo(structType: string, memberName: string): TTypeInfo | null {
const fieldInfo = this.getStructFieldInfo(structType, memberName);
if (!fieldInfo) return null;
const isArray =
(fieldInfo.dimensions !== undefined && fieldInfo.dimensions.length > 0) ||
(CodeGenState.symbols!.structFieldArrays.get(structType)?.has(
memberName,
) ??
false);
const dims = fieldInfo.dimensions?.filter(
(d): d is number => typeof d === "number",
);
return {
baseType: fieldInfo.type,
bitWidth: TYPE_WIDTH[fieldInfo.type] ?? 32,
isConst: false,
isArray,
arrayDimensions: dims && dims.length > 0 ? dims : undefined,
};
}
/**
* Generate a bit mask for bit range access.
* Part of IOrchestrator interface.
* Issue #644: Delegate to BitUtils for code reuse.
*/
generateBitMask(width: string, is64Bit: boolean = false): string {
// BitUtils.generateMask expects a type string, not a boolean
return BitUtils.generateMask(width, is64Bit ? "u64" : undefined);
}
/**
* Add a pending temp variable declaration (for float bit indexing).
* Part of IOrchestrator interface.
*/
addPendingTempDeclaration(declaration: string): void {
CodeGenState.pendingTempDeclarations.push(declaration);
}
/**
* Register a float bit shadow variable.
* Part of IOrchestrator interface.
*/
registerFloatBitShadow(shadowName: string): void {
CodeGenState.floatBitShadows.add(shadowName);
}
/**
* Mark a float shadow as having current value (skip redundant memcpy).
* Part of IOrchestrator interface.
*/
markFloatShadowCurrent(shadowName: string): void {
CodeGenState.floatShadowCurrent.add(shadowName);
}
/**
* Check if a float shadow has been declared.
* Part of IOrchestrator interface.
*/
hasFloatBitShadow(shadowName: string): boolean {
return CodeGenState.floatBitShadows.has(shadowName);
}
/**
* Check if a float shadow has current value.
* Part of IOrchestrator interface.
*/
isFloatShadowCurrent(shadowName: string): boolean {
return CodeGenState.floatShadowCurrent.has(shadowName);
}
// ===========================================================================
// End IOrchestrator Implementation
// ===========================================================================
/**
* Issue #551: Check if a type is a known primitive type.
* Known primitives use pass-by-reference with dereference.
* Unknown types (external enums, typedefs) use pass-by-value.
*/
private _isKnownPrimitive(typeName: string): boolean {
return !!TYPE_MAP[typeName];
}
/**
* PR #681: Build dependencies for parameter dereference resolution.
* Used by ParameterDereferenceResolver to determine if parameters need dereferencing.
*/
private _buildParameterDereferenceDeps(): IParameterDereferenceDeps {
return {
isFloatType: (typeName: string) => this._isFloatType(typeName),
isKnownPrimitive: (typeName: string) => this._isKnownPrimitive(typeName),
knownEnums: CodeGenState.symbols!.knownEnums,
isParameterPassByValue: (funcName: string, paramName: string) =>
this._isParameterPassByValueByName(funcName, paramName),
currentFunctionName: CodeGenState.currentFunctionName,
maybeDereference: (id: string) => this.cppHelper!.maybeDereference(id),
};
}
/**
* PR #681: Build dependencies for member separator resolution.
* Used by MemberSeparatorResolver to determine appropriate separators.
*/
private _buildMemberSeparatorDeps(): IMemberSeparatorDeps {
return {
isKnownScope: (name: string) => this.isKnownScope(name),
isKnownRegister: (name: string) =>
CodeGenState.symbols!.knownRegisters.has(name),
validateCrossScopeVisibility: (scopeName: string, memberName: string) =>
this.validateCrossScopeVisibility(scopeName, memberName),
validateRegisterAccess: (
registerName: string,
memberName: string,
hasGlobal: boolean,
) => this._validateRegisterAccess(registerName, memberName, hasGlobal),
getStructParamSeparator: () =>
memberAccessChain.getStructParamSeparator({
cppMode: CodeGenState.cppMode,
}),
};
}
/**
* Validate register access from inside a scope requires global. prefix
*/
private _validateRegisterAccess(
registerName: string,
memberName: string,
hasGlobal: boolean,
): void {
// Only validate when inside a scope and accessing without global. prefix
if (CodeGenState.currentScope && !hasGlobal) {
throw new Error(
`Error: Use 'global.${registerName}.${memberName}' to access register '${registerName}' ` +
`from inside scope '${CodeGenState.currentScope}'`,
);
}
}
/**
* Issue #517: Check if a type is a C++ class with a user-defined constructor.
* C++ classes with user-defined constructors are NOT aggregate types,
* so designated initializers { .field = value } don't work with them.
* We check for the existence of a constructor symbol (TypeName::ClassName).
*/
private _isCppClassWithConstructor(typeName: string): boolean {
return CppConstructorHelper.hasConstructor(
typeName,
CodeGenState.symbolTable,
);
}
private foldBooleanToInt(expr: string): string {
return BooleanHelper.foldBooleanToInt(expr);
}
/**
* Issue #388: Resolve a qualified type from dot notation to the correct output format.
* For C++ namespace types (like MockLib.Parse.ParseResult), uses :: separator.
* For C-Next scope types (like Motor.State), uses _ separator.
*
* @param identifiers Array of identifier names forming the qualified type
* @returns The resolved type name with appropriate separator
*/
private resolveQualifiedType(identifiers: string[]): string {
Iif (identifiers.length === 0) {
return "";
}
const firstName = identifiers[0];
// Check if the first identifier is a C++ scope symbol (namespace, class, enum)
Iif (this.isCppScopeSymbol(firstName)) {
// C++ namespace type: join all parts with ::
return identifiers.join("::");
}
// C-Next scope type: join all parts with _
return identifiers.join("_");
}
/**
* Issue #304: Check if a type name is from a C++ header
* Used to determine whether to use {} or {0} for initialization.
* C++ types with constructors may fail with {0} but work with {}.
*/
private isCppType(typeName: string): boolean {
return SymbolLookupHelper.isCppType(CodeGenState.symbolTable, typeName);
}
/**
* Generate C code from a C-Next program
* @param tree The parsed C-Next program
* @param symbolTable Optional symbol table for cross-language interop
* @param tokenStream Optional token stream for comment preservation (ADR-043)
* @param options Optional code generator options (e.g., debugMode)
*/
generate(
tree: Parser.ProgramContext,
symbolTable?: SymbolTable,
tokenStream?: CommonTokenStream,
options?: ICodeGeneratorOptions,
): string {
// ADR-049: Determine target capabilities with priority: CLI > pragma > default
const targetCapabilities = this.resolveTargetCapabilities(
tree,
options?.target,
);
// ADR-053: Initialize generators (once per CodeGenerator instance)
if (!this.generatorsInitialized) {
this.initializeGenerators();
this.generatorsInitialized = true;
}
// Reset state for fresh generation (must be before any state assignments)
this.resetGeneratorState(targetCapabilities);
// Initialize options and configuration (after reset)
this.initializeGenerateOptions(options, tokenStream);
// Store symbol table for function lookup (after reset)
CodeGenState.symbolTable = symbolTable ?? null;
// ADR-055: Use pre-collected symbolInfo from Pipeline (TSymbolInfoAdapter)
if (!options?.symbolInfo) {
throw new Error(
"symbolInfo is required - use CNextResolver + TSymbolInfoAdapter",
);
}
CodeGenState.symbols = options.symbolInfo;
// Initialize symbol data and const values
this.initializeSymbolData();
// Initialize all helper objects
this.initializeHelperObjects(tree);
// Second pass: register all variable types in the type registry
this.registerAllVariableTypes(tree);
// Assemble and return the output
return this.assembleGeneratedOutput(tree, options);
}
/**
* Initialize options and configuration for generate().
*/
private initializeGenerateOptions(
options: ICodeGeneratorOptions | undefined,
tokenStream: CommonTokenStream | undefined,
): void {
CodeGenState.debugMode = options?.debugMode ?? false;
CodeGenState.sourcePath = options?.sourcePath ?? null;
CodeGenState.includeDirs = options?.includeDirs ?? [];
CodeGenState.inputs = options?.inputs ?? [];
CodeGenState.cppMode = options?.cppMode ?? false;
this.cppHelper = new CppModeHelper({ cppMode: CodeGenState.cppMode });
CodeGenState.pendingTempDeclarations = [];
CodeGenState.tempVarCounter = 0;
CodeGenState.pendingCppClassAssignments = [];
this.tokenStream = tokenStream ?? null;
this.commentExtractor = this.tokenStream
? new CommentExtractor(this.tokenStream)
: null;
}
/**
* Reset all generator state for a fresh generation pass.
*/
private resetGeneratorState(targetCapabilities: TargetCapabilities): void {
// Reset global state first
CodeGenState.reset(targetCapabilities);
// Reset local context (will gradually migrate to CodeGenState)
this.context = CodeGenerator.createDefaultContext(targetCapabilities);
CodeGenState.knownFunctions = new Set();
CodeGenState.functionSignatures = new Map();
CodeGenState.callbackTypes = new Map();
CodeGenState.callbackFieldTypes = new Map();
CodeGenState.usedClampOps = new Set();
CodeGenState.usedSafeDivOps = new Set();
CodeGenState.needsStdint = false;
CodeGenState.needsStdbool = false;
CodeGenState.needsString = false;
CodeGenState.needsFloatStaticAssert = false;
CodeGenState.needsISR = false;
CodeGenState.needsCMSIS = false;
CodeGenState.needsLimits = false;
CodeGenState.needsIrqWrappers = false;
CodeGenState.selfIncludeAdded = false;
}
/**
* Initialize symbol data and const values from symbol table.
*/
private initializeSymbolData(): void {
const symbols = CodeGenState.symbols!;
// Copy symbol data to CodeGenState.scopeMembers
for (const [scopeName, members] of symbols.scopeMembers) {
CodeGenState.scopeMembers.set(scopeName, new Set(members));
}
// Issue #461: Initialize constValues from symbol table
CodeGenState.constValues = new Map();
if (CodeGenState.symbolTable) {
for (const symbol of CodeGenState.symbolTable.getAllSymbols()) {
if (
symbol.kind === ESymbolKind.Variable &&
symbol.isConst &&
symbol.initialValue !== undefined
) {
const value = LiteralUtils.parseIntegerLiteral(symbol.initialValue);
if (value !== undefined) {
CodeGenState.constValues.set(symbol.name, value);
// Also populate CodeGenState
CodeGenState.constValues.set(symbol.name, value);
}
}
}
}
}
/**
* Initialize all helper objects needed for code generation.
*/
private initializeHelperObjects(tree: Parser.ProgramContext): void {
const symbols = CodeGenState.symbols!;
// Initialize type resolver
this.typeResolver = new TypeResolver({
symbols: symbols,
symbolTable: CodeGenState.symbolTable,
typeRegistry: CodeGenState.typeRegistry,
resolveIdentifier: (name: string) => this.resolveIdentifier(name),
});
// Collect function/callback information
this.collectFunctionsAndCallbacks(tree);
this.analyzePassByValue(tree);
// Initialize type validator
this.typeValidator = new TypeValidator({
symbols: symbols,
symbolTable: CodeGenState.symbolTable,
typeRegistry: CodeGenState.typeRegistry,
typeResolver: this.typeResolver,
callbackTypes: CodeGenState.callbackTypes,
knownFunctions: CodeGenState.knownFunctions,
knownGlobals: new Set(),
getCurrentScope: () => CodeGenState.currentScope,
getScopeMembers: () => CodeGenState.scopeMembers,
getCurrentParameters: () => CodeGenState.currentParameters,
getLocalVariables: () => CodeGenState.localVariables,
resolveIdentifier: (name: string) => this.resolveIdentifier(name),
getExpressionType: (ctx: unknown) =>
this.getExpressionType(ctx as Parser.ExpressionContext),
});
// Initialize remaining helpers
this.initializeAnalysisHelpers(symbols);
}
/**
* Initialize analysis and generation helpers.
*/
private initializeAnalysisHelpers(symbols: ICodeGenSymbols): void {
this.stringLengthCounter = new StringLengthCounter((name: string) =>
CodeGenState.typeRegistry.get(name),
);
this.memberChainAnalyzer = new MemberChainAnalyzer({
typeRegistry: CodeGenState.typeRegistry,
structFields: symbols.structFields,
structFieldArrays: symbols.structFieldArrays,
isKnownStruct: (name) => this.isKnownStruct(name),
generateExpression: (ctx) => this.generateExpression(ctx),
});
this.floatBitHelper = new FloatBitHelper({
cppMode: CodeGenState.cppMode,
state: {
floatBitShadows: CodeGenState.floatBitShadows,
floatShadowCurrent: CodeGenState.floatShadowCurrent,
},
generateBitMask: (width, is64Bit) => this.generateBitMask(width, is64Bit),
foldBooleanToInt: (expr) => this.foldBooleanToInt(expr),
requireInclude: (header) => this.requireInclude(header),
});
// Create arrayInitState proxy
const arrayInitState = {
get lastArrayInitCount() {
return CodeGenState.lastArrayInitCount;
},
set lastArrayInitCount(val: number) {
CodeGenState.lastArrayInitCount = val;
},
get lastArrayFillValue() {
return CodeGenState.lastArrayFillValue;
},
set lastArrayFillValue(val: string | undefined) {
CodeGenState.lastArrayFillValue = val;
},
};
this.stringDeclHelper = new StringDeclHelper({
typeRegistry: CodeGenState.typeRegistry,
getInFunctionBody: () => CodeGenState.inFunctionBody,
getIndentLevel: () => CodeGenState.indentLevel,
arrayInitState,
localArrays: CodeGenState.localArrays,
generateExpression: (ctx) => this.generateExpression(ctx),
generateArrayDimensions: (dims) => this.generateArrayDimensions(dims),
getStringConcatOperands: (ctx) => this._getStringConcatOperands(ctx),
getSubstringOperands: (ctx) => this._getSubstringOperands(ctx),
getStringLiteralLength: (literal) => StringUtils.literalLength(literal),
getStringExprCapacity: (exprCode) => this.getStringExprCapacity(exprCode),
requireStringInclude: () => this.requireInclude("string"),
});
this.enumValidator = new EnumAssignmentValidator({
knownEnums: symbols.knownEnums,
getCurrentScope: () => CodeGenState.currentScope,
getExpressionEnumType: (ctx) => this.getExpressionEnumType(ctx),
isIntegerExpression: (ctx) => this._isIntegerExpression(ctx),
});
this.arrayInitHelper = new ArrayInitHelper({
typeRegistry: CodeGenState.typeRegistry,
localArrays: CodeGenState.localArrays,
arrayInitState: arrayInitState,
getExpectedType: () => CodeGenState.expectedType,
setExpectedType: (type) => {
CodeGenState.expectedType = type;
},
generateExpression: (ctx) => this.generateExpression(ctx),
getTypeName: (ctx) => this.getTypeName(ctx),
generateArrayDimensions: (dims) => this.generateArrayDimensions(dims),
});
this.expectedTypeResolver = new AssignmentExpectedTypeResolver({
typeRegistry: CodeGenState.typeRegistry,
structFields: symbols.structFields,
isKnownStruct: (name) => this.isKnownStruct(name),
});
this.assignmentValidator = new AssignmentValidator({
typeValidator: this.typeValidator!,
enumValidator: this.enumValidator,
typeRegistry: CodeGenState.typeRegistry,
floatShadowCurrent: CodeGenState.floatShadowCurrent,
registerMemberAccess: symbols.registerMemberAccess,
callbackFieldTypes: CodeGenState.callbackFieldTypes,
isKnownStruct: (name) => this.isKnownStruct(name),
isIntegerType: (name) => this._isIntegerType(name),
getExpressionType: (ctx) => this.getExpressionType(ctx),
tryEvaluateConstant: (ctx) => this.tryEvaluateConstant(ctx),
isCallbackTypeUsedAsFieldType: (name) =>
this.isCallbackTypeUsedAsFieldType(name),
});
}
/**
* Assemble the final generated output.
*/
private assembleGeneratedOutput(
tree: Parser.ProgramContext,
options: ICodeGeneratorOptions | undefined,
): string {
const output: string[] = [];
const symbols = CodeGenState.symbols!;
const typeValidator = this.typeValidator!;
// Add header comment
output.push(
"/**",
" * Generated by C-Next Transpiler",
" * A safer C for embedded systems",
" */",
"",
);
// Self-include for extern "C" linkage
if (symbols.hasPublicSymbols() && CodeGenState.sourcePath) {
const pathToUse =
options?.sourceRelativePath ||
CodeGenState.sourcePath.replace(/^.*[\\/]/, "");
const headerName = pathToUse.replace(/\.cnx$|\.cnext$/, ".h");
output.push(`#include "${headerName}"`, "");
CodeGenState.selfIncludeAdded = true;
}
// Process include directives
this.processIncludeDirectives(tree, output, typeValidator);
// Process preprocessor directives
this.processPreprocessorDirectives(tree, output);
// Generate declarations
const declarations = this.generateAllDeclarations(tree);
// Add auto-includes and helpers
this.addAutoIncludes(output);
this.addGeneratedHelpers(output);
// Add the declarations
output.push(...declarations);
return output.join("\n");
}
/**
* Process all include directives and add to output.
*/
private processIncludeDirectives(
tree: Parser.ProgramContext,
output: string[],
typeValidator: TypeValidator,
): void {
const includePaths = CodeGenState.sourcePath
? IncludeDiscovery.discoverIncludePaths(CodeGenState.sourcePath)
: [];
for (const includeDir of tree.includeDirective()) {
const leadingComments = this.getLeadingComments(includeDir);
output.push(...this.formatLeadingComments(leadingComments));
const lineNumber = includeDir.start?.line ?? 0;
typeValidator.validateIncludeNotImplementationFile(
includeDir.getText(),
lineNumber,
);
typeValidator.validateIncludeNoCnxAlternative(
includeDir.getText(),
lineNumber,
CodeGenState.sourcePath,
includePaths,
);
output.push(this.transformIncludeDirective(includeDir.getText()));
}
if (tree.includeDirective().length > 0) {
output.push("");
}
}
/**
* Process all preprocessor directives and add to output.
*/
private processPreprocessorDirectives(
tree: Parser.ProgramContext,
output: string[],
): void {
for (const ppDir of tree.preprocessorDirective()) {
const leadingComments = this.getLeadingComments(ppDir);
output.push(...this.formatLeadingComments(leadingComments));
const result = this.processPreprocessorDirective(ppDir);
if (result) {
output.push(result);
}
}
if (tree.preprocessorDirective().length > 0) {
output.push("");
}
}
/**
* Generate all declarations from the tree.
*/
private generateAllDeclarations(tree: Parser.ProgramContext): string[] {
const declarations: string[] = [];
for (const decl of tree.declaration()) {
const leadingComments = this.getLeadingComments(decl);
declarations.push(...this.formatLeadingComments(leadingComments));
const code = this.generateDeclaration(decl);
if (code) {
declarations.push(code);
}
}
return declarations;
}
/**
* Add auto-generated includes based on usage.
*/
private addAutoIncludes(output: string[]): void {
const autoIncludes: string[] = [];
if (CodeGenState.needsStdint) autoIncludes.push("#include <stdint.h>");
if (CodeGenState.needsStdbool) autoIncludes.push("#include <stdbool.h>");
if (CodeGenState.needsString) autoIncludes.push("#include <string.h>");
if (CodeGenState.needsCMSIS) autoIncludes.push("#include <cmsis_gcc.h>");
if (CodeGenState.needsLimits) autoIncludes.push("#include <limits.h>");
if (autoIncludes.length > 0) {
output.push(...autoIncludes, "");
}
}
/**
* Add generated helpers (static asserts, IRQ wrappers, typedefs, etc.).
*/
private addGeneratedHelpers(output: string[]): void {
if (CodeGenState.needsFloatStaticAssert) {
output.push(
'_Static_assert(sizeof(float) == 4, "Float bit indexing requires 32-bit float");',
'_Static_assert(sizeof(double) == 8, "Float bit indexing requires 64-bit double");',
"",
);
}
if (CodeGenState.needsIrqWrappers) {
output.push(
"// ADR-050: IRQ wrappers to avoid macro collisions with platform headers",
"static inline void __cnx_disable_irq(void) { __disable_irq(); }",
"static inline uint32_t __cnx_get_PRIMASK(void) { return __get_PRIMASK(); }",
"static inline void __cnx_set_PRIMASK(uint32_t mask) { __set_PRIMASK(mask); }",
"",
);
}
if (CodeGenState.needsISR) {
output.push(
"/* ADR-040: ISR function pointer type */",
"typedef void (*ISR)(void);",
"",
);
}
const helpers = this.generateOverflowHelpers();
if (helpers.length > 0) {
output.push(...helpers);
}
const safeDivHelpers = this.generateSafeDivHelpers();
Iif (safeDivHelpers.length > 0) {
output.push(...safeDivHelpers);
}
}
/**
* ADR-049: Resolve target capabilities with priority: CLI > pragma > default
* @param tree - The parsed program tree
* @param cliTarget - Optional target from CLI --target flag
*/
private resolveTargetCapabilities(
tree: Parser.ProgramContext,
cliTarget?: string,
): TargetCapabilities {
// Priority 1: CLI --target flag
if (cliTarget) {
const targetName = cliTarget.toLowerCase();
if (TARGET_CAPABILITIES[targetName]) {
return TARGET_CAPABILITIES[targetName];
}
// Warn about unknown CLI target but continue with pragma/default
console.warn(
`Warning: Unknown target '${cliTarget}', falling back to pragma or default`,
);
}
// Priority 2: #pragma target in source
const pragmaTarget = this.parseTargetPragma(tree);
if (pragmaTarget !== DEFAULT_TARGET) {
return pragmaTarget;
}
// Priority 3: Default (safe fallback - no LDREX/STREX)
return DEFAULT_TARGET;
}
/**
* ADR-049: Parse #pragma target directive from source
* Returns capabilities for the specified platform, or DEFAULT_TARGET if none found
*/
private parseTargetPragma(tree: Parser.ProgramContext): TargetCapabilities {
// pragmaDirective is accessed through preprocessorDirective
const preprocessorDirs = tree.preprocessorDirective();
for (const ppDir of preprocessorDirs) {
const pragmaDir = ppDir.pragmaDirective();
if (pragmaDir) {
// PRAGMA_TARGET captures the whole "#pragma target <name>" as one token
const text = pragmaDir.getText();
// Extract target name: "#pragma target teensy41" -> "teensy41"
const match = /#\s*pragma\s+target\s+(\S+)/i.exec(text);
Eif (match) {
const targetName = match[1].toLowerCase();
Eif (TARGET_CAPABILITIES[targetName]) {
return TARGET_CAPABILITIES[targetName];
}
}
}
}
return DEFAULT_TARGET;
}
/**
* ADR-010: Transform #include directives, converting .cnx to .h
* ADR-053 A5: Delegates to IncludeGenerator
* Issue #349: Now passes includeDirs and inputs for angle-bracket resolution
*/
private transformIncludeDirective(includeText: string): string {
return includeTransformIncludeDirective(includeText, {
sourcePath: CodeGenState.sourcePath,
includeDirs: CodeGenState.includeDirs,
inputs: CodeGenState.inputs,
});
}
// Issue #63: validateIncludeNotImplementationFile moved to TypeValidator
/**
* Collect function and callback information.
* Issue #60: Symbol collection extracted to SymbolCollector.
* This method handles function signatures and callback types (not yet extracted).
*/
private collectFunctionsAndCallbacks(tree: Parser.ProgramContext): void {
for (const decl of tree.declaration()) {
// ADR-016: Handle scope declarations for function tracking
if (decl.scopeDeclaration()) {
this._collectScopeFunctions(decl.scopeDeclaration()!);
continue;
}
// ADR-029: Track callback field types in structs
if (decl.structDeclaration()) {
this._collectStructCallbackFields(decl.structDeclaration()!);
continue;
}
// Track top-level functions
if (decl.functionDeclaration()) {
this._collectTopLevelFunction(decl.functionDeclaration()!);
}
}
}
/**
* Collect scoped functions and their callback types
*/
private _collectScopeFunctions(
scopeDecl: Parser.ScopeDeclarationContext,
): void {
const scopeName = scopeDecl.IDENTIFIER().getText();
// Set scope context for scoped type resolution (this.Type)
const savedScope = CodeGenState.currentScope;
CodeGenState.currentScope = scopeName;
for (const member of scopeDecl.scopeMember()) {
if (member.functionDeclaration()) {
const funcDecl = member.functionDeclaration()!;
const funcName = funcDecl.IDENTIFIER().getText();
// Track fully qualified function name: Scope_function
const fullName = `${scopeName}_${funcName}`;
CodeGenState.knownFunctions.add(fullName);
// ADR-013: Track function signature for const checking
const sig = this.extractFunctionSignature(
fullName,
funcDecl.parameterList() ?? null,
);
CodeGenState.functionSignatures.set(fullName, sig);
// ADR-029: Register scoped function as callback type
this.registerCallbackType(fullName, funcDecl);
}
}
// Restore previous scope context
CodeGenState.currentScope = savedScope;
}
/**
* Collect callback field types from struct declaration
*/
private _collectStructCallbackFields(
structDecl: Parser.StructDeclarationContext,
): void {
const structName = structDecl.IDENTIFIER().getText();
for (const member of structDecl.structMember()) {
const fieldName = member.IDENTIFIER().getText();
const fieldType = this.getTypeName(member.type());
// Track callback field types (needed for typedef generation)
if (CodeGenState.callbackTypes.has(fieldType)) {
CodeGenState.callbackFieldTypes.set(
`${structName}.${fieldName}`,
fieldType,
);
}
}
}
/**
* Collect top-level function and register as callback type
*/
private _collectTopLevelFunction(
funcDecl: Parser.FunctionDeclarationContext,
): void {
const name = funcDecl.IDENTIFIER().getText();
CodeGenState.knownFunctions.add(name);
// ADR-013: Track function signature for const checking
const sig = this.extractFunctionSignature(
name,
funcDecl.parameterList() ?? null,
);
CodeGenState.functionSignatures.set(name, sig);
// ADR-029: Register function as callback type
this.registerCallbackType(name, funcDecl);
}
/**
* Second pass: register all variable types in the type registry
* This ensures type information is available before generating any code,
* allowing .length and other type-dependent operations to work regardless
* of declaration order (e.g., scope functions can reference globals declared later)
* SonarCloud S3776: Refactored to use helper methods.
*/
private registerAllVariableTypes(tree: Parser.ProgramContext): void {
for (const decl of tree.declaration()) {
// Register global variable types
if (decl.variableDeclaration()) {
this.registerGlobalVariableType(decl.variableDeclaration()!);
}
// Register scope member variable types
if (decl.scopeDeclaration()) {
this.registerScopeMemberTypes(decl.scopeDeclaration()!);
}
// Note: Function parameters are registered per-function during generation
// since they're scoped to the function body
}
}
/**
* Register a global variable type and track const values.
* SonarCloud S3776: Extracted from registerAllVariableTypes().
*/
private registerGlobalVariableType(
varDecl: Parser.VariableDeclarationContext,
): void {
this.trackVariableType(varDecl);
// Bug #8: Track const values for array size resolution at file scope
if (varDecl.constModifier() && varDecl.expression()) {
const constName = varDecl.IDENTIFIER().getText();
const constValue = this.tryEvaluateConstant(varDecl.expression()!);
if (constValue !== undefined) {
CodeGenState.constValues.set(constName, constValue);
}
}
}
/**
* Register scope member variable types.
* SonarCloud S3776: Extracted from registerAllVariableTypes().
*/
private registerScopeMemberTypes(
scopeDecl: Parser.ScopeDeclarationContext,
): void {
const scopeName = scopeDecl.IDENTIFIER().getText();
// Set currentScope so that this.Type references resolve correctly
const savedScope = CodeGenState.currentScope;
this.setCurrentScope(scopeName);
for (const member of scopeDecl.scopeMember()) {
if (member.variableDeclaration()) {
const varDecl = member.variableDeclaration()!;
const varName = varDecl.IDENTIFIER().getText();
const fullName = `${scopeName}_${varName}`;
// Register with mangled name (Scope_variable)
this.trackVariableTypeWithName(varDecl, fullName);
}
}
// Restore previous scope
this.setCurrentScope(savedScope);
}
// Issue #60: collectEnum and collectBitmap methods removed - now in SymbolCollector
// Issue #63: validateBitmapFieldLiteral moved to TypeValidator
// Issue #60: evaluateConstantExpression method removed - now in SymbolCollector
// ========================================================================
// Issue #269: Pass-by-value analysis for small unmodified parameters
// ========================================================================
/**
* Analyze all functions to determine which parameters should pass by value.
* This runs before code generation and populates passByValueParams.
* SonarCloud S3776: Refactored to use helper methods.
*/
private analyzePassByValue(tree: Parser.ProgramContext): void {
// Reset analysis state
CodeGenState.modifiedParameters.clear();
CodeGenState.passByValueParams.clear();
CodeGenState.functionCallGraph.clear();
CodeGenState.functionParamLists.clear();
// Phase 1: Collect function parameter lists and direct modifications
this.collectFunctionParametersAndModifications(tree);
// Issue #558: Inject cross-file data before transitive propagation
this.injectCrossFileModifications();
this.injectCrossFileParamLists();
// Phase 2: Fixed-point iteration for transitive modifications
TransitiveModificationPropagator.propagate(
CodeGenState.functionCallGraph,
CodeGenState.functionParamLists,
CodeGenState.modifiedParameters,
);
// Phase 3: Determine which parameters can pass by value
this.computePassByValueParams();
}
/**
* Inject cross-file modification data into modifiedParameters.
* SonarCloud S3776: Extracted from analyzePassByValue().
*/
private injectCrossFileModifications(): void {
if (!CodeGenState.pendingCrossFileModifications) return;
for (const [
funcName,
params,
] of CodeGenState.pendingCrossFileModifications) {
const existing = CodeGenState.modifiedParameters.get(funcName);
if (existing) {
for (const param of params) {
existing.add(param);
}
} else {
CodeGenState.modifiedParameters.set(funcName, new Set(params));
}
}
CodeGenState.pendingCrossFileModifications = null; // Clear after use
}
/**
* Inject cross-file parameter lists into functionParamLists.
* SonarCloud S3776: Extracted from analyzePassByValue().
*/
private injectCrossFileParamLists(): void {
if (!CodeGenState.pendingCrossFileParamLists) return;
for (const [funcName, params] of CodeGenState.pendingCrossFileParamLists) {
if (!CodeGenState.functionParamLists.has(funcName)) {
CodeGenState.functionParamLists.set(funcName, [...params]);
}
}
CodeGenState.pendingCrossFileParamLists = null; // Clear after use
}
/**
* Phase 1: Walk all functions to collect:
* - Parameter lists (for call graph resolution)
* - Direct modifications (param <- value)
* - Function calls where params are passed as arguments
*/
private collectFunctionParametersAndModifications(
tree: Parser.ProgramContext,
): void {
for (const decl of tree.declaration()) {
// Handle scope-level functions
if (decl.scopeDeclaration()) {
const scopeDecl = decl.scopeDeclaration()!;
const scopeName = scopeDecl.IDENTIFIER().getText();
for (const member of scopeDecl.scopeMember()) {
if (member.functionDeclaration()) {
const funcDecl = member.functionDeclaration()!;
const funcName = funcDecl.IDENTIFIER().getText();
const fullName = `${scopeName}_${funcName}`;
this.analyzeFunctionForModifications(fullName, funcDecl);
}
}
}
// Handle top-level functions
if (decl.functionDeclaration()) {
const funcDecl = decl.functionDeclaration()!;
const name = funcDecl.IDENTIFIER().getText();
this.analyzeFunctionForModifications(name, funcDecl);
}
}
}
/**
* Analyze a single function for parameter modifications and call graph edges.
*/
private analyzeFunctionForModifications(
funcName: string,
funcDecl: Parser.FunctionDeclarationContext,
): void {
// Collect parameter names
const paramNames: string[] = [];
const paramList = funcDecl.parameterList();
if (paramList) {
for (const param of paramList.parameter()) {
paramNames.push(param.IDENTIFIER().getText());
}
}
CodeGenState.functionParamLists.set(funcName, paramNames);
// Initialize modified set
CodeGenState.modifiedParameters.set(funcName, new Set());
// Issue #579: Initialize subscript access tracking
CodeGenState.subscriptAccessedParameters.set(funcName, new Set());
CodeGenState.functionCallGraph.set(funcName, []);
// Walk the function body to find modifications and calls
const block = funcDecl.block();
Eif (block) {
this.walkBlockForModifications(funcName, paramNames, block);
}
}
/**
* Walk a block to find parameter modifications and function calls.
*/
private walkBlockForModifications(
funcName: string,
paramNames: string[],
block: Parser.BlockContext,
): void {
const paramSet = new Set(paramNames);
for (const stmt of block.statement()) {
this.walkStatementForModifications(funcName, paramSet, stmt);
}
}
/**
* Walk a statement recursively looking for modifications and calls.
* Issue #566: Refactored to use helper methods for expression and child collection.
*/
private walkStatementForModifications(
funcName: string,
paramSet: Set<string>,
stmt: Parser.StatementContext,
): void {
// 1. Check for parameter modifications via assignment targets
if (stmt.assignmentStatement()) {
this.trackAssignmentModifications(funcName, paramSet, stmt);
}
// 2. Walk all expressions in this statement for function calls and subscript access
for (const expr of StatementExpressionCollector.collectAll(stmt)) {
this.walkExpressionForCalls(funcName, paramSet, expr);
// Issue #579: Also track subscript read access on parameters
this.walkExpressionForSubscriptAccess(funcName, paramSet, expr);
}
// 3. Recurse into child statements and blocks
const { statements, blocks } = ChildStatementCollector.collectAll(stmt);
for (const childStmt of statements) {
this.walkStatementForModifications(funcName, paramSet, childStmt);
}
for (const block of blocks) {
this.walkBlockForModifications(funcName, [...paramSet], block);
}
}
/**
* Track assignment modifications for parameter const inference.
* SonarCloud S3776: Extracted from walkStatementForModifications().
*/
private trackAssignmentModifications(
funcName: string,
paramSet: Set<string>,
stmt: Parser.StatementContext,
): void {
const assign = stmt.assignmentStatement()!;
const target = assign.assignmentTarget();
const { baseIdentifier, hasSingleIndexSubscript } =
AssignmentTargetExtractor.extract(target);
// Issue #579: Track subscript access on parameters (for write path)
if (
hasSingleIndexSubscript &&
baseIdentifier &&
paramSet.has(baseIdentifier)
) {
CodeGenState.subscriptAccessedParameters
.get(funcName)!
.add(baseIdentifier);
}
// Track as modified parameter
if (baseIdentifier && paramSet.has(baseIdentifier)) {
CodeGenState.modifiedParameters.get(funcName)!.add(baseIdentifier);
}
}
/**
* Walk an expression tree to find function calls where parameters are passed.
* Uses recursive descent through the expression hierarchy.
*/
private walkExpressionForCalls(
funcName: string,
paramSet: Set<string>,
expr: Parser.ExpressionContext,
): void {
// Expression -> TernaryExpression -> OrExpression -> ... -> PostfixExpression
const ternary = expr.ternaryExpression();
Eif (ternary) {
// Walk all orExpression children
for (const orExpr of ternary.orExpression()) {
this.walkOrExpressionForCalls(funcName, paramSet, orExpr);
}
}
}
/**
* Issue #579: Walk an expression tree to find subscript access on parameters.
* This tracks read access like `buf[i]` where buf is a parameter.
* Parameters with subscript access must become pointers.
*/
private walkExpressionForSubscriptAccess(
funcName: string,
paramSet: Set<string>,
expr: Parser.ExpressionContext,
): void {
const ternary = expr.ternaryExpression();
Eif (ternary) {
for (const orExpr of ternary.orExpression()) {
this.walkOrExpression(orExpr, (unaryExpr) => {
this.handleSubscriptAccess(funcName, paramSet, unaryExpr);
});
}
}
}
/**
* Issue #579: Handle subscript access on a unary expression.
* Only tracks single-index subscript access (which could be array access).
* Two-index subscript (e.g., value[start, width]) is always bit extraction,
* so it doesn't require the parameter to become a pointer.
*/
private handleSubscriptAccess(
funcName: string,
paramSet: Set<string>,
unaryExpr: Parser.UnaryExpressionContext,
): void {
const postfixExpr = unaryExpr.postfixExpression();
if (!postfixExpr) return;
const primary = postfixExpr.primaryExpression();
const ops = postfixExpr.postfixOp();
// Check if primary is a parameter and there's subscript access
const primaryId = primary.IDENTIFIER()?.getText();
if (!primaryId || !paramSet.has(primaryId)) {
return;
}
// Only track SINGLE-index subscript access (potential array access)
// Two-index subscript like value[0, 8] is bit extraction, not array access
const hasSingleIndexSubscript = ops.some(
(op) => op.expression().length === 1,
);
if (hasSingleIndexSubscript) {
CodeGenState.subscriptAccessedParameters.get(funcName)!.add(primaryId);
}
}
/**
* Generic walker for orExpression trees.
* Walks through the expression hierarchy and calls the handler for each unaryExpression.
* Used by both function call tracking and subscript access tracking.
*/
private walkOrExpression(
orExpr: Parser.OrExpressionContext,
handler: (unaryExpr: Parser.UnaryExpressionContext) => void,
): void {
orExpr
.andExpression()
.flatMap((and) => and.equalityExpression())
.flatMap((eq) => eq.relationalExpression())
.flatMap((rel) => rel.bitwiseOrExpression())
.flatMap((bor) => bor.bitwiseXorExpression())
.flatMap((bxor) => bxor.bitwiseAndExpression())
.flatMap((band) => band.shiftExpression())
.flatMap((shift) => shift.additiveExpression())
.flatMap((add) => add.multiplicativeExpression())
.flatMap((mul) => mul.unaryExpression())
.forEach(handler);
}
/**
* Walk an orExpression tree for function calls.
*/
private walkOrExpressionForCalls(
funcName: string,
paramSet: Set<string>,
orExpr: Parser.OrExpressionContext,
): void {
this.walkOrExpression(orExpr, (unaryExpr) => {
this.walkUnaryExpressionForCalls(funcName, paramSet, unaryExpr);
});
}
/**
* Walk a unaryExpression tree for function calls.
*/
private walkUnaryExpressionForCalls(
funcName: string,
paramSet: Set<string>,
unaryExpr: Parser.UnaryExpressionContext,
): void {
// Recurse into nested unary
if (unaryExpr.unaryExpression()) {
this.walkUnaryExpressionForCalls(
funcName,
paramSet,
unaryExpr.unaryExpression()!,
);
return;
}
// Check postfix expression
const postfix = unaryExpr.postfixExpression();
Eif (postfix) {
this.walkPostfixExpressionForCalls(funcName, paramSet, postfix);
}
}
/**
* Walk a postfixExpression for function calls.
* This is where function calls are found: primaryExpr followed by '(' args ')'
*/
private walkPostfixExpressionForCalls(
funcName: string,
paramSet: Set<string>,
postfix: Parser.PostfixExpressionContext,
): void {
const primary = postfix.primaryExpression();
const postfixOps = postfix.postfixOp();
// Handle simple function calls: IDENTIFIER followed by '(' ... ')'
this.handleSimpleFunctionCall(funcName, paramSet, primary, postfixOps);
// Issue #365: Handle scope-qualified calls: Scope.method(...) or global.Scope.method(...)
this.handleScopeQualifiedCalls(funcName, paramSet, primary, postfixOps);
// Recurse into primary expression if it's a parenthesized expression
if (primary.expression()) {
this.walkExpressionForCalls(funcName, paramSet, primary.expression()!);
}
// Walk arguments in any postfix function call ops (for nested calls)
this.walkPostfixOpsRecursively(funcName, paramSet, postfixOps);
}
/**
* Handle simple function calls: IDENTIFIER followed by '(' ... ')'
*/
private handleSimpleFunctionCall(
funcName: string,
paramSet: Set<string>,
primary: Parser.PrimaryExpressionContext,
postfixOps: Parser.PostfixOpContext[],
): void {
if (!primary.IDENTIFIER() || postfixOps.length === 0) return;
const firstOp = postfixOps[0];
if (!firstOp.LPAREN()) return;
const calleeName = primary.IDENTIFIER()!.getText();
this.recordCallsFromArgList(funcName, paramSet, calleeName, firstOp);
}
/**
* Handle scope-qualified calls: Scope.method(...) or global.Scope.method(...)
* Track member accesses to build the mangled callee name (e.g., Storage_load)
*/
private handleScopeQualifiedCalls(
funcName: string,
paramSet: Set<string>,
primary: Parser.PrimaryExpressionContext,
postfixOps: Parser.PostfixOpContext[],
): void {
if (postfixOps.length === 0) return;
const memberNames = this.collectInitialMemberNames(funcName, primary);
for (const op of postfixOps) {
if (op.IDENTIFIER()) {
memberNames.push(op.IDENTIFIER()!.getText());
} else if (op.LPAREN() && memberNames.length >= 1) {
const calleeName = memberNames.join("_");
this.recordCallsFromArgList(funcName, paramSet, calleeName, op);
memberNames.length = 0; // Reset for potential chained calls
E} else if (op.expression().length > 0) {
memberNames.length = 0; // Array subscript breaks scope chain
}
}
}
/**
* Collect initial member names from primary expression for scope resolution.
* Issue #561: When 'this' is used, resolve to the current scope name from funcName.
*/
private collectInitialMemberNames(
funcName: string,
primary: Parser.PrimaryExpressionContext,
): string[] {
const memberNames: string[] = [];
const primaryId = primary.IDENTIFIER()?.getText();
if (primaryId && primaryId !== "global") {
memberNames.push(primaryId);
} else if (primary.THIS()) {
const scopeName = funcName.split("_")[0];
if (scopeName && scopeName !== funcName) {
memberNames.push(scopeName);
}
}
return memberNames;
}
/**
* Record function calls to the call graph from an argument list.
* Also recurses into argument expressions.
*/
private recordCallsFromArgList(
funcName: string,
paramSet: Set<string>,
calleeName: string,
op: Parser.PostfixOpContext,
): void {
const argList = op.argumentList();
if (!argList) return;
const args = argList.expression();
for (let i = 0; i < args.length; i++) {
const arg = args[i];
const argName = ExpressionUtils.extractIdentifier(arg);
if (argName && paramSet.has(argName)) {
CodeGenState.functionCallGraph.get(funcName)!.push({
callee: calleeName,
paramIndex: i,
argParamName: argName,
});
}
this.walkExpressionForCalls(funcName, paramSet, arg);
}
}
/**
* Walk postfix ops recursively for nested calls and array subscripts.
*/
private walkPostfixOpsRecursively(
funcName: string,
paramSet: Set<string>,
postfixOps: Parser.PostfixOpContext[],
): void {
for (const op of postfixOps) {
if (op.argumentList()) {
for (const argExpr of op.argumentList()!.expression()) {
this.walkExpressionForCalls(funcName, paramSet, argExpr);
}
}
for (const expr of op.expression()) {
this.walkExpressionForCalls(funcName, paramSet, expr);
}
}
}
/**
* Phase 3: Determine which parameters can pass by value.
* A parameter passes by value if:
* 1. It's a small primitive type (u8, i8, u16, i16, u32, i32, u64, i64, bool)
* 2. It's not modified (directly or transitively)
* 3. It's not an array, struct, string, or callback
*/
private computePassByValueParams(): void {
const smallPrimitives = new Set([
"u8",
"i8",
"u16",
"i16",
"u32",
"i32",
"u64",
"i64",
"bool",
]);
for (const [funcName, paramNames] of CodeGenState.functionParamLists) {
const passByValue = new Set<string>();
const modified =
CodeGenState.modifiedParameters.get(funcName) ?? new Set();
// Get function declaration to check parameter types
const funcSig = CodeGenState.functionSignatures.get(funcName);
if (funcSig) {
for (let i = 0; i < paramNames.length; i++) {
const paramName = paramNames[i];
const paramSig = funcSig.parameters[i];
Iif (!paramSig) continue;
// Check if eligible for pass-by-value:
// - Is a small primitive type
// - Not an array
// - Not modified
// - Not accessed via subscript (Issue #579)
const isSmallPrimitive = smallPrimitives.has(paramSig.baseType);
const isArray = paramSig.isArray ?? false;
const isModified = modified.has(paramName);
// Issue #579: Parameters with subscript access must become pointers
const hasSubscriptAccess =
CodeGenState.subscriptAccessedParameters
.get(funcName)
?.has(paramName) ?? false;
if (
isSmallPrimitive &&
!isArray &&
!isModified &&
!hasSubscriptAccess
) {
passByValue.add(paramName);
}
}
}
CodeGenState.passByValueParams.set(funcName, passByValue);
}
}
/**
* Check if a parameter should be passed by value (by name).
* Used internally during code generation.
*/
private _isParameterPassByValueByName(
funcName: string,
paramName: string,
): boolean {
const passByValue = CodeGenState.passByValueParams.get(funcName);
return passByValue?.has(paramName) ?? false;
}
/**
* Issue #269: Check if a parameter should be passed by value (by index).
* Part of IOrchestrator interface - used by CallExprGenerator.
*/
isParameterPassByValue(funcName: string, paramIndex: number): boolean {
const paramList = CodeGenState.functionParamLists.get(funcName);
Iif (!paramList || paramIndex < 0 || paramIndex >= paramList.length) {
return false;
}
const paramName = paramList[paramIndex];
return this._isParameterPassByValueByName(funcName, paramName);
}
/**
* Issue #269: Get all pass-by-value parameters.
* Returns a Map from function name to Set of parameter names that should be pass-by-value.
* Used by HeaderGenerator to ensure header and implementation signatures match.
*/
getPassByValueParams(): ReadonlyMap<string, ReadonlySet<string>> {
return CodeGenState.passByValueParams;
}
/**
* ADR-036: Try to evaluate an expression as a compile-time constant.
* Returns the numeric value if constant, undefined if not evaluable.
* Bug #8: Extended to resolve const variable references for file-scope array sizes.
* Issue #644: Delegates to ArrayDimensionParser for consolidated implementation.
*/
// Issue #63: checkArrayBounds moved to TypeValidator
/**
* Evaluate array dimensions from ArrayDimensionContext[] to number[].
* Used for bitmap array registration.
* Issue #644: Delegates to ArrayDimensionParser for consolidated implementation.
*/
private _evaluateArrayDimensions(
arrayDim: Parser.ArrayDimensionContext[] | null,
): number[] | undefined {
return ArrayDimensionParser.parseAllDimensions(arrayDim, {
constValues: CodeGenState.constValues,
typeWidths: TYPE_WIDTH,
isKnownStruct: (name) => this.isKnownStruct(name),
});
}
/**
* Try to register a type as enum or bitmap. Returns true if handled.
* Extracted to reduce duplication across type contexts (ADR-017, ADR-034).
*/
private _tryRegisterEnumOrBitmapType(
name: string,
baseType: string,
isConst: boolean,
arrayDim: Parser.ArrayDimensionContext[] | null,
overflowBehavior: TOverflowBehavior,
isAtomic: boolean,
): boolean {
// Common options for type registration
const registrationOptions = {
name,
baseType,
isConst,
overflowBehavior,
isAtomic,
};
// ADR-017: Check if this is an enum type
if (
TypeRegistrationUtils.tryRegisterEnumType(
CodeGenState.typeRegistry,
CodeGenState.symbols!,
registrationOptions,
)
) {
return true;
}
// ADR-034: Check if this is a bitmap type
const bitmapDimensions = this._evaluateArrayDimensions(arrayDim);
if (
TypeRegistrationUtils.tryRegisterBitmapType(
CodeGenState.typeRegistry,
CodeGenState.symbols!,
registrationOptions,
bitmapDimensions,
)
) {
return true;
}
return false;
}
/**
* Extract type info from a variable declaration and register it.
* Delegates to trackVariableTypeWithName using the variable's identifier.
*/
private trackVariableType(varDecl: Parser.VariableDeclarationContext): void {
const name = varDecl.IDENTIFIER().getText();
this.trackVariableTypeWithName(varDecl, name);
}
// =========================================================================
// Type Registration Helpers - Extracted to reduce cognitive complexity
// =========================================================================
/**
* Extract array dimensions from ArrayDimensionContext array (simple parseInt version)
* Used for string array dimensions where const evaluation is not needed.
* Issue #644: Delegates to ArrayDimensionParser for consolidated implementation.
*/
private extractArrayDimensionsSimple(
arrayDim: Parser.ArrayDimensionContext[] | null,
): number[] {
return ArrayDimensionParser.parseSimpleDimensions(arrayDim);
}
/**
* Register a string type in the type registry
* Returns true if registration was successful
*/
private tryRegisterStringType(
registryName: string,
typeCtx: Parser.TypeContext,
arrayDim: Parser.ArrayDimensionContext[] | null,
isConst: boolean,
overflowBehavior: TOverflowBehavior,
isAtomic: boolean,
): boolean {
const stringCtx = typeCtx.stringType();
if (!stringCtx) {
return false;
}
const intLiteral = stringCtx.INTEGER_LITERAL();
if (!intLiteral) {
return false;
}
const capacity = Number.parseInt(intLiteral.getText(), 10);
this.requireInclude("string");
const stringDim = capacity + 1;
// Check if there are additional array dimensions (e.g., [4] in string<64> arr[4])
const additionalDims = this.extractArrayDimensionsSimple(arrayDim);
const allDims =
additionalDims.length > 0 ? [...additionalDims, stringDim] : [stringDim];
CodeGenState.typeRegistry.set(registryName, {
baseType: "char",
bitWidth: 8,
isArray: true,
arrayDimensions: allDims,
isConst,
isString: true,
stringCapacity: capacity,
overflowBehavior,
isAtomic,
});
return true;
}
/**
* Resolve base type name from a type context
* Handles scoped, global, qualified, and user types
*/
private resolveBaseTypeFromContext(
typeCtx: Parser.TypeContext,
): string | null {
if (typeCtx.primitiveType()) {
return typeCtx.primitiveType()!.getText();
}
if (typeCtx.scopedType()) {
// ADR-016: Handle this.Type for scoped types (e.g., this.State -> Motor_State)
const typeName = typeCtx.scopedType()!.IDENTIFIER().getText();
return CodeGenState.currentScope
? `${CodeGenState.currentScope}_${typeName}`
: typeName;
}
if (typeCtx.globalType()) {
// Issue #478: Handle global.Type for global types inside scope
return typeCtx.globalType()!.IDENTIFIER().getText();
}
if (typeCtx.qualifiedType()) {
// ADR-016: Handle Scope.Type from outside scope
// Issue #388: Also handles C++ namespace types
const identifiers = typeCtx.qualifiedType()!.IDENTIFIER();
const identifierNames = identifiers.map((id) => id.getText());
return this.resolveQualifiedType(identifierNames);
}
if (typeCtx.userType()) {
return typeCtx.userType()!.getText();
}
return null;
}
/**
* Track variable type with a specific name (for namespace/class members)
* This allows tracking with mangled names for proper scope resolution
*/
private trackVariableTypeWithName(
varDecl: Parser.VariableDeclarationContext,
registryName: string,
): void {
const typeCtx = varDecl.type();
const arrayDim = varDecl.arrayDimension();
const isConst = varDecl.constModifier() !== null;
// ADR-044: Extract overflow modifier (clamp is default)
const overflowMod = varDecl.overflowModifier();
const overflowBehavior: TOverflowBehavior =
overflowMod?.getText() === "wrap" ? "wrap" : "clamp";
// ADR-049: Extract atomic modifier
const isAtomic = varDecl.atomicModifier() !== null;
// ADR-045: Handle bounded string type first (special case)
if (
this.tryRegisterStringType(
registryName,
typeCtx,
arrayDim,
isConst,
overflowBehavior,
isAtomic,
)
) {
return;
}
// Handle array type syntax: u8[10]
Iif (typeCtx.arrayType()) {
this._registerArrayTypeVariable(
registryName,
typeCtx.arrayType()!,
arrayDim,
isConst,
overflowBehavior,
isAtomic,
);
return;
}
// Resolve base type from context (handles scoped, global, qualified, user types)
const baseType = this.resolveBaseTypeFromContext(typeCtx);
if (!baseType) {
return;
}
// ADR-017/ADR-034: Check if enum or bitmap type (reuse existing helper)
if (
this._tryRegisterEnumOrBitmapType(
registryName,
baseType,
isConst,
arrayDim,
overflowBehavior,
isAtomic,
)
) {
return;
}
// Standard type registration
this._registerStandardType(
registryName,
baseType,
arrayDim,
isConst,
overflowBehavior,
isAtomic,
);
}
/**
* Register an array type variable (u8[10] syntax)
*/
private _registerArrayTypeVariable(
registryName: string,
arrayTypeCtx: Parser.ArrayTypeContext,
arrayDim: Parser.ArrayDimensionContext[] | null,
isConst: boolean,
overflowBehavior: TOverflowBehavior,
isAtomic: boolean,
): void {
let baseType = "";
let bitWidth = 0;
if (arrayTypeCtx.primitiveType()) {
baseType = arrayTypeCtx.primitiveType()!.getText();
bitWidth = TYPE_WIDTH[baseType] || 0;
}
if (!baseType) {
return;
}
const arrayDimensions = this._collectArrayDimensions(
arrayTypeCtx,
arrayDim,
);
CodeGenState.typeRegistry.set(registryName, {
baseType,
bitWidth,
isArray: true,
arrayDimensions: arrayDimensions.length > 0 ? arrayDimensions : undefined,
isConst,
overflowBehavior,
isAtomic,
});
}
/**
* Collect array dimensions from array type and additional dimensions
*/
private _collectArrayDimensions(
arrayTypeCtx: Parser.ArrayTypeContext,
arrayDim: Parser.ArrayDimensionContext[] | null,
): number[] {
const arrayDimensions: number[] = [];
// Get dimension from array type syntax
const sizeExpr = arrayTypeCtx.expression();
if (sizeExpr) {
const size = Number.parseInt(sizeExpr.getText(), 10);
if (!Number.isNaN(size)) {
arrayDimensions.push(size);
}
}
// Add additional dimensions using const evaluation
const additionalDims = this._evaluateArrayDimensions(arrayDim);
if (additionalDims) {
arrayDimensions.push(...additionalDims);
}
return arrayDimensions;
}
/**
* Register a standard (non-array-syntax, non-special) type
*/
private _registerStandardType(
registryName: string,
baseType: string,
arrayDim: Parser.ArrayDimensionContext[] | null,
isConst: boolean,
overflowBehavior: TOverflowBehavior,
isAtomic: boolean,
): void {
const bitWidth = TYPE_WIDTH[baseType] || 0;
// Issue #665: Check array syntax presence first, then try to resolve dimensions
// This matches the pattern in trackVariableType() - unresolved dimensions (e.g., enum
// members like EIndex.COUNT) should still mark the variable as an array
const isArray = arrayDim !== null && arrayDim.length > 0;
const arrayDimensions = isArray
? this._evaluateArrayDimensions(arrayDim)
: undefined;
CodeGenState.typeRegistry.set(registryName, {
baseType,
bitWidth,
isArray,
arrayDimensions: isArray ? arrayDimensions : undefined,
isConst,
overflowBehavior,
isAtomic,
});
}
/**
* Issue #322: Check if a type name is a user-defined struct
* Part of IOrchestrator interface.
*/
isStructType(typeName: string): boolean {
return this.typeResolver!.isStructType(typeName);
}
/**
* Set up parameter tracking for a function
*/
private _setParameters(params: Parser.ParameterListContext | null): void {
CodeGenState.currentParameters.clear();
CodeGenState.currentParameters.clear();
if (!params) return;
for (const param of params.parameter()) {
this._processParameter(param);
}
}
/**
* Process a single parameter declaration
*/
private _processParameter(param: Parser.ParameterContext): void {
const name = param.IDENTIFIER().getText();
const isArray = param.arrayDimension().length > 0;
const isConst = param.constModifier() !== null;
const typeCtx = param.type();
// Resolve type information
const typeInfo = this._resolveParameterTypeInfo(typeCtx);
// Register in currentParameters
const paramInfo = {
name,
baseType: typeInfo.typeName,
isArray,
isStruct: typeInfo.isStruct,
isConst,
isCallback: typeInfo.isCallback,
isString: typeInfo.isString,
};
CodeGenState.currentParameters.set(name, paramInfo);
// Register in typeRegistry
this._registerParameterType(name, typeInfo, param, isArray, isConst);
}
/**
* Resolve type name and flags from a type context
*/
private _resolveParameterTypeInfo(typeCtx: Parser.TypeContext): {
typeName: string;
isStruct: boolean;
isCallback: boolean;
isString: boolean;
} {
if (typeCtx.primitiveType()) {
return {
typeName: typeCtx.primitiveType()!.getText(),
isStruct: false,
isCallback: false,
isString: false,
};
}
if (typeCtx.userType()) {
const typeName = typeCtx.userType()!.getText();
return {
typeName,
isStruct: this.isStructType(typeName),
isCallback: CodeGenState.callbackTypes.has(typeName),
isString: false,
};
}
if (typeCtx.qualifiedType()) {
const identifierNames = typeCtx
.qualifiedType()!
.IDENTIFIER()
.map((id) => id.getText());
const typeName = this.resolveQualifiedType(identifierNames);
return {
typeName,
isStruct: this.isStructType(typeName),
isCallback: false,
isString: false,
};
}
if (typeCtx.scopedType()) {
const localTypeName = typeCtx.scopedType()!.IDENTIFIER().getText();
const typeName = CodeGenState.currentScope
? `${CodeGenState.currentScope}_${localTypeName}`
: localTypeName;
return {
typeName,
isStruct: this.isStructType(typeName),
isCallback: false,
isString: false,
};
}
if (typeCtx.globalType()) {
const typeName = typeCtx.globalType()!.IDENTIFIER().getText();
return {
typeName,
isStruct: this.isStructType(typeName),
isCallback: false,
isString: false,
};
}
Eif (typeCtx.stringType()) {
return {
typeName: "string",
isStruct: false,
isCallback: false,
isString: true,
};
}
// Fallback
return {
typeName: typeCtx.getText(),
isStruct: false,
isCallback: false,
isString: false,
};
}
/**
* Register a parameter in the type registry
*/
private _registerParameterType(
name: string,
typeInfo: { typeName: string; isString: boolean },
param: Parser.ParameterContext,
isArray: boolean,
isConst: boolean,
): void {
const { typeName, isString } = typeInfo;
const typeCtx = param.type();
const isEnum = CodeGenState.symbols!.knownEnums.has(typeName);
const isBitmap = CodeGenState.symbols!.knownBitmaps.has(typeName);
// Extract array dimensions
const arrayDimensions = isArray
? ArrayDimensionParser.parseForParameters(param.arrayDimension())
: [];
// Get string capacity if applicable
const stringCapacity = this._getStringCapacity(typeCtx, isString);
if (isArray && stringCapacity !== undefined) {
arrayDimensions.push(stringCapacity + 1);
}
const registeredType = {
baseType: typeName,
bitWidth: isBitmap
? CodeGenState.symbols!.bitmapBitWidth.get(typeName) || 0
: TYPE_WIDTH[typeName] || 0,
isArray,
arrayDimensions: arrayDimensions.length > 0 ? arrayDimensions : undefined,
isConst,
isEnum,
enumTypeName: isEnum ? typeName : undefined,
isBitmap,
bitmapTypeName: isBitmap ? typeName : undefined,
isString,
stringCapacity,
isParameter: true,
};
CodeGenState.typeRegistry.set(name, registeredType);
}
/**
* Extract string capacity from a string type context
*/
private _getStringCapacity(
typeCtx: Parser.TypeContext,
isString: boolean,
): number | undefined {
if (!isString || !typeCtx.stringType()) return undefined;
const intLiteral = typeCtx.stringType()!.INTEGER_LITERAL();
Iif (!intLiteral) return undefined;
return Number.parseInt(intLiteral.getText(), 10);
}
/**
* Clear parameter tracking when leaving a function
*/
private _clearParameters(): void {
// ADR-025: Remove parameter types from typeRegistry
for (const name of CodeGenState.currentParameters.keys()) {
CodeGenState.typeRegistry.delete(name);
CodeGenState.typeRegistry.delete(name);
}
CodeGenState.currentParameters.clear();
CodeGenState.localArrays.clear();
CodeGenState.currentParameters.clear();
CodeGenState.localArrays.clear();
}
/**
* ADR-013: Extract function signature from parameter list
*/
private extractFunctionSignature(
name: string,
params: Parser.ParameterListContext | null,
): FunctionSignature {
const parameters: Array<{
name: string;
baseType: string;
isConst: boolean;
isArray: boolean;
}> = [];
if (params) {
for (const param of params.parameter()) {
const paramName = param.IDENTIFIER().getText();
const isConst = param.constModifier() !== null;
// arrayDimension() returns an array (due to grammar's *), so check length
const isArray = param.arrayDimension().length > 0;
const baseType = this.getTypeName(param.type());
parameters.push({ name: paramName, baseType, isConst, isArray });
}
}
return { name, parameters };
}
/**
* ADR-029: Register a function as a callback type
* The function name becomes both a callable function and a type for callback fields
*/
private registerCallbackType(
name: string,
funcDecl: Parser.FunctionDeclarationContext,
): void {
const returnType = this.generateType(funcDecl.type());
const parameters: Array<{
name: string;
type: string;
isConst: boolean;
isPointer: boolean;
isArray: boolean;
arrayDims: string;
}> = [];
if (funcDecl.parameterList()) {
for (const param of funcDecl.parameterList()!.parameter()) {
const paramName = param.IDENTIFIER().getText();
const typeName = this.getTypeName(param.type());
const isConst = param.constModifier() !== null;
const dims = param.arrayDimension();
const isArray = dims.length > 0;
// ADR-029: Check if parameter type is itself a callback type
const isCallbackParam = CodeGenState.callbackTypes.has(typeName);
let paramType: string;
let isPointer: boolean;
if (isCallbackParam) {
// Use the callback typedef name
const cbInfo = CodeGenState.callbackTypes.get(typeName)!;
paramType = cbInfo.typedefName;
isPointer = false; // Function pointers are already pointers
} else {
paramType = this.generateType(param.type());
// ADR-006: Non-array parameters become pointers
isPointer = !isArray;
}
const arrayDims = isArray
? dims.map((d) => this.generateArrayDimension(d)).join("")
: "";
parameters.push({
name: paramName,
type: paramType,
isConst,
isPointer,
isArray,
arrayDims,
});
}
}
CodeGenState.callbackTypes.set(name, {
functionName: name,
returnType,
parameters,
typedefName: `${name}_fp`,
});
}
/**
* ADR-029: Check if a function is used as a callback type (field type in a struct)
*/
// Issue #63: validateCallbackAssignment, callbackSignaturesMatch, isConstValue,
// and validateBareIdentifierInScope moved to TypeValidator
// EnumTypeResolver now handles: _getEnumTypeFromThisEnum, _getEnumTypeFromGlobalEnum,
// _getEnumTypeFromThisVariable, _getEnumTypeFromScopedEnum, _getEnumTypeFromMemberAccess,
// _getExpressionEnumType, _getFunctionCallEnumType
/**
* ADR-017: Check if an expression represents an integer literal or numeric type.
* Used to detect comparisons between enums and integers.
*/
private _isIntegerExpression(
ctx: Parser.ExpressionContext | Parser.RelationalExpressionContext,
): boolean {
const text = ctx.getText();
// Check for integer literals
if (
/^-?\d+$/.exec(text) ||
/^0[xX][0-9a-fA-F]+$/.exec(text) ||
/^0[bB][01]+$/.exec(text)
) {
return true;
}
// Check if it's a variable of primitive integer type
if (/^[a-zA-Z_]\w*$/.exec(text)) {
const typeInfo = CodeGenState.typeRegistry.get(text);
if (
typeInfo &&
!typeInfo.isEnum &&
TypeCheckUtils.isInteger(typeInfo.baseType)
) {
return true;
}
}
return false;
}
/**
* ADR-045: Check if an expression is a string concatenation (contains + with string operands).
* Returns the operand expressions if it is, null otherwise.
*/
private _getStringConcatOperands(ctx: Parser.ExpressionContext): {
left: string;
right: string;
leftCapacity: number;
rightCapacity: number;
} | null {
// Navigate to the additive expression level using ExpressionUnwrapper
// Issue #707: Deduplicated expression tree navigation
const add = ExpressionUnwrapper.getAdditiveExpression(ctx);
Iif (!add) return null;
const multExprs = add.multiplicativeExpression();
// Need exactly 2 operands for simple concatenation
if (multExprs.length !== 2) return null;
// Check if this is addition (not subtraction)
const text = add.getText();
Iif (text.includes("-")) return null;
// Get the operand texts
const leftText = multExprs[0].getText();
const rightText = multExprs[1].getText();
// Check if at least one operand is a string
const leftCapacity = this.getStringExprCapacity(leftText);
const rightCapacity = this.getStringExprCapacity(rightText);
Iif (leftCapacity === null && rightCapacity === null) {
return null; // Neither is a string
}
// If one is null, it's not a valid string concatenation
Iif (leftCapacity === null || rightCapacity === null) {
return null;
}
return {
left: leftText,
right: rightText,
leftCapacity,
rightCapacity,
};
}
/**
* ADR-045: Get the capacity of a string expression.
* For string literals, capacity is the literal length.
* For string variables, capacity is from the type registry.
*/
/**
* ADR-045: Check if an expression is a substring extraction (string[start, length]).
* Returns the source string, start, length, and source capacity if it is.
* Issue #707: Uses ExpressionUnwrapper for tree navigation.
*/
private _getSubstringOperands(ctx: Parser.ExpressionContext): {
source: string;
start: string;
length: string;
sourceCapacity: number;
} | null {
// Navigate to the postfix expression level using shared utility
const postfix = ExpressionUnwrapper.getPostfixExpression(ctx);
Iif (!postfix) return null;
const primary = postfix.primaryExpression();
const ops = postfix.postfixOp();
// Need exactly one postfix operation (the [start, length])
if (ops.length !== 1) return null;
const op = ops[0];
const exprs = op.expression();
// Get the source variable name first
const sourceId = primary.IDENTIFIER();
Iif (!sourceId) return null;
const sourceName = sourceId.getText();
// Check if source is a string type
const typeInfo = CodeGenState.typeRegistry.get(sourceName);
Iif (!typeInfo?.isString || typeInfo.stringCapacity === undefined) {
return null;
}
// Issue #140: Handle both [start, length] pattern (2 expressions)
// and single-character access [index] pattern (1 expression, treated as [index, 1])
if (exprs.length === 2) {
return {
source: sourceName,
start: this.generateExpression(exprs[0]),
length: this.generateExpression(exprs[1]),
sourceCapacity: typeInfo.stringCapacity,
};
E} else if (exprs.length === 1) {
// Single-character access: source[i] is sugar for source[i, 1]
return {
source: sourceName,
start: this.generateExpression(exprs[0]),
length: "1",
sourceCapacity: typeInfo.stringCapacity,
};
}
return null;
}
// ========================================================================
// ADR-024: Type Classification and Validation Helpers
// ========================================================================
// NOTE: Public isIntegerType and isFloatType moved to IOrchestrator interface (ADR-053 A2)
// Private versions kept for internal use
private _isIntegerType(typeName: string): boolean {
return this.typeResolver!.isIntegerType(typeName);
}
private _isFloatType(typeName: string): boolean {
return this.typeResolver!.isFloatType(typeName);
}
/**
* ADR-024: Check if conversion from sourceType to targetType is narrowing
* Narrowing occurs when target type has fewer bits than source type
*/
private isNarrowingConversion(
sourceType: string,
targetType: string,
): boolean {
return this.typeResolver!.isNarrowingConversion(sourceType, targetType);
}
/**
* ADR-024: Check if conversion involves a sign change
* Sign change occurs when converting between signed and unsigned types
*/
private isSignConversion(sourceType: string, targetType: string): boolean {
return this.typeResolver!.isSignConversion(sourceType, targetType);
}
/**
* ADR-024: Validate that a literal value fits within the target type's range.
* Throws an error if the value doesn't fit.
* @param literalText The literal text (e.g., "256", "-1", "0xFF")
* @param targetType The target type (e.g., "u8", "i32")
*/
private _validateLiteralFitsType(
literalText: string,
targetType: string,
): void {
this.typeResolver!.validateLiteralFitsType(literalText, targetType);
}
/**
* ADR-024: Get the type of a unary expression (for cast validation).
*/
private getUnaryExpressionType(
ctx: Parser.UnaryExpressionContext,
): string | null {
return this.typeResolver!.getUnaryExpressionType(ctx);
}
/**
* ADR-024: Validate that a type conversion is allowed.
* Throws error for narrowing or sign-changing conversions.
*/
private _validateTypeConversion(
targetType: string,
sourceType: string | null,
): void {
this.typeResolver!.validateTypeConversion(targetType, sourceType);
}
// Issue #63: checkConstAssignment moved to TypeValidator
/**
* Check if an expression is an lvalue that needs & when passed to functions.
* This includes member access (cursor.x) and array access (arr[i]).
* Returns the type of lvalue or null if not an lvalue.
*/
private getLvalueType(
ctx: Parser.ExpressionContext,
): "member" | "array" | null {
const postfix = ExpressionUnwrapper.getPostfixExpression(ctx);
Iif (!postfix) return null;
const ops = postfix.postfixOp();
const result = CppMemberHelper.getLastPostfixOpType(
this._toPostfixOps(ops),
);
// Function calls are not lvalues
Iif (result === "function") return null;
return result;
}
/**
* Issue #251/#252/#256: Check if a member access expression needs a temp variable in C++ mode.
*
* Returns true when passing struct member to function would fail C++ compilation:
* 1. Const struct parameter member -> non-const parameter (const T* -> T* invalid)
* 2. External C struct members of bool/enum type -> u8 parameter (type mismatch)
* 3. Array element member access (arr[i].member) with external struct elements
*/
private needsCppMemberConversion(
ctx: Parser.ExpressionContext,
targetParamBaseType?: string,
): boolean {
Eif (!CodeGenState.cppMode) return false;
if (!targetParamBaseType) return false;
const postfix = ExpressionUnwrapper.getPostfixExpression(ctx);
if (!postfix) return false;
const primary = postfix.primaryExpression();
if (!primary) return false;
const baseId = primary.IDENTIFIER()?.getText();
Iif (!baseId) return false;
const ops = postfix.postfixOp();
// Case 1: Direct parameter member access (cfg.value)
const paramInfo = CodeGenState.currentParameters.get(baseId);
if (paramInfo) {
return this._needsParamMemberConversion(paramInfo, targetParamBaseType);
}
// Case 2: Array element or function return member access
return this._needsComplexMemberConversion(ops, baseId, targetParamBaseType);
}
/**
* Case 1: Direct parameter member access needs conversion?
* Issue #251: Const struct parameter needs temp to break const chain
* Issue #252: External C structs may have bool/enum members
*/
private _needsParamMemberConversion(
paramInfo: { baseType: string; isStruct?: boolean; isConst?: boolean },
targetParamBaseType: string,
): boolean {
return CppMemberHelper.needsParamMemberConversion(
paramInfo,
targetParamBaseType,
);
}
/**
* Convert parser PostfixOpContext to IPostfixOp interface for CppMemberHelper.
*/
private _toPostfixOps(ops: Parser.PostfixOpContext[]): IPostfixOp[] {
return ops.map((op) => ({
hasExpression: op.expression() !== null,
hasIdentifier: op.IDENTIFIER() !== null,
hasArgumentList: op.argumentList() !== null,
textEndsWithParen: op.getText().endsWith(")"),
}));
}
/**
* Case 2: Array element or function return member access needs conversion?
* Issue #256: arr[i].member or getConfig().member patterns
*/
private _needsComplexMemberConversion(
ops: Parser.PostfixOpContext[],
baseId: string,
targetParamBaseType: string,
): boolean {
const typeInfo = CodeGenState.typeRegistry.get(baseId);
return CppMemberHelper.needsComplexMemberConversion(
this._toPostfixOps(ops),
typeInfo,
targetParamBaseType,
);
}
/**
* Issue #246: Check if an expression is a subscript access on a string variable.
* For example, buf[0] where buf is a string<N>.
* Used to determine when to cast char* to uint8_t* etc.
*/
private isStringSubscriptAccess(ctx: Parser.ExpressionContext): boolean {
const postfix = ExpressionUnwrapper.getPostfixExpression(ctx);
if (!postfix) return false;
const ops = postfix.postfixOp();
const hasPostfixOps = ops.length > 0;
const lastOpHasExpression =
hasPostfixOps && ops.at(-1)!.expression() !== null;
// Get the base identifier
const primary = postfix.primaryExpression();
const baseId = primary.IDENTIFIER()?.getText();
if (!baseId) return false;
const typeInfo = CodeGenState.typeRegistry.get(baseId);
const paramInfo = CodeGenState.currentParameters.get(baseId);
return CppMemberHelper.isStringSubscriptPattern(
hasPostfixOps,
lastOpHasExpression,
typeInfo,
paramInfo?.isString ?? false,
);
}
/**
* Issue #308: Check if a member access expression is accessing an array member.
* For example, result.data where data is a u8[6] array member.
* When passing such expressions to functions, the array should naturally decay
* to a pointer, so we should NOT add & operator.
*
* Note: Currently handles single-level member access only (e.g., result.data).
* Nested access like outer.inner.data would require traversing the postfix chain
* to resolve intermediate struct types. This is acceptable since issue #308
* involves single-level access patterns.
*
* Issue #355: Check if struct field info is available for a member access.
* Used for defensive code generation - when we don't have field info,
* we skip potentially dangerous conversions.
*
* @returns "array" if definitely an array, "not-array" if definitely not,
* "unknown" if struct field info is not available
*/
private getMemberAccessArrayStatus(
ctx: Parser.ExpressionContext,
): "array" | "not-array" | "unknown" {
const postfix = ExpressionUnwrapper.getPostfixExpression(ctx);
Iif (!postfix) return "not-array";
const ops = postfix.postfixOp();
Iif (ops.length === 0) return "not-array";
// Last operator must be member access (.identifier)
const lastOp = ops.at(-1)!;
const memberName = lastOp.IDENTIFIER()?.getText();
Iif (!memberName) return "not-array";
// Get the base identifier to find the struct type
const primary = postfix.primaryExpression();
Iif (!primary) return "not-array";
const baseId = primary.IDENTIFIER()?.getText();
Iif (!baseId) return "not-array";
// Look up the struct type from either:
// 1. Local variable: typeRegistry.get(baseId).baseType
// 2. Parameter: currentParameters.get(baseId).baseType
let structType: string | undefined;
const typeInfo = CodeGenState.typeRegistry.get(baseId);
if (typeInfo) {
structType = typeInfo.baseType;
} else E{
const paramInfo = CodeGenState.currentParameters.get(baseId);
if (paramInfo) {
structType = paramInfo.baseType;
}
}
Iif (!structType) return "not-array";
// Check if this struct member is an array
const memberInfo = this.getMemberTypeInfo(structType, memberName);
// Issue #355: If memberInfo is undefined, we don't have struct field info
// This could mean the header wasn't parsed - return "unknown" for defensive generation
Iif (!memberInfo) {
return "unknown";
}
return memberInfo.isArray ? "array" : "not-array";
}
/**
* Generate a function argument with proper ADR-006 semantics.
* - Local variables get & (address-of)
* - Member access (cursor.x) gets & (address-of)
* - Array access (arr[i]) gets & (address-of)
* - Parameters are passed as-is (already pointers)
* - Arrays are passed as-is (naturally decay to pointers)
* - Literals use compound literals for pointer params: &(type){value}
* - Complex expressions are passed as-is
*/
private _generateFunctionArg(
ctx: Parser.ExpressionContext,
targetParamBaseType?: string,
): string {
const id = CodegenParserUtils.getSimpleIdentifier(ctx);
if (id) {
return this._handleIdentifierArg(id);
}
const lvalueType = this.getLvalueType(ctx);
Eif (lvalueType) {
return this._handleLvalueArg(ctx, lvalueType, targetParamBaseType);
}
return this._handleRvalueArg(ctx, targetParamBaseType);
}
/**
* Handle simple identifier argument (parameter, local array, scope member, or variable)
*/
private _handleIdentifierArg(id: string): string {
// Parameters are already pointers
if (CodeGenState.currentParameters.get(id)) {
return id;
}
// Local arrays decay to pointers
if (CodeGenState.localArrays.has(id)) {
return id;
}
// Global arrays also decay to pointers (check typeRegistry)
// But NOT strings - strings need & (they're char arrays but passed by reference)
const typeInfo = CodeGenState.typeRegistry.get(id);
if (typeInfo?.isArray && !typeInfo.isString) {
return id;
}
// Scope member - may need prefixing
Iif (CodeGenState.currentScope) {
const members = CodeGenState.scopeMembers.get(CodeGenState.currentScope);
if (members?.has(id)) {
const scopedName = `${CodeGenState.currentScope}_${id}`;
return this.cppHelper!.maybeAddressOf(scopedName);
}
}
// Local variable - add & (except in C++ mode)
return this.cppHelper!.maybeAddressOf(id);
}
/**
* Handle lvalue argument (member access or array access)
*/
private _handleLvalueArg(
ctx: Parser.ExpressionContext,
lvalueType: string,
targetParamBaseType?: string,
): string {
// Member access to array field - arrays decay to pointers
Eif (lvalueType === "member") {
const memberResult = this._handleMemberAccessArg(
ctx,
targetParamBaseType,
);
if (memberResult) return memberResult;
}
// Generate expression with address-of
const generatedExpr = this.generateExpression(ctx);
const expr = this.cppHelper!.maybeAddressOf(generatedExpr);
// String subscript access may need cast
Iif (lvalueType === "array") {
return this._maybeCastStringSubscript(ctx, expr, targetParamBaseType);
}
return expr;
}
/**
* Handle member access argument - may need special handling for arrays or C++ conversions
*/
private _handleMemberAccessArg(
ctx: Parser.ExpressionContext,
targetParamBaseType?: string,
): string | null {
const arrayStatus = this.getMemberAccessArrayStatus(ctx);
// Array member - no address-of needed
if (arrayStatus === "array") {
return this.generateExpression(ctx);
}
// C++ mode may need temp variable for type conversion
Iif (
arrayStatus === "not-array" &&
this.needsCppMemberConversion(ctx, targetParamBaseType)
) {
return this._createCppMemberConversionTemp(ctx, targetParamBaseType!);
}
return null; // Fall through to default lvalue handling
}
/**
* Create temp variable for C++ member conversion
*/
private _createCppMemberConversionTemp(
ctx: Parser.ExpressionContext,
targetParamBaseType: string,
): string {
const cType = TYPE_MAP[targetParamBaseType] || "uint8_t";
const value = this.generateExpression(ctx);
const tempName = `_cnx_tmp_${CodeGenState.tempVarCounter++}`;
const castExpr = this.cppHelper!.cast(cType, value);
CodeGenState.pendingTempDeclarations.push(
`${cType} ${tempName} = ${castExpr};`,
);
return this.cppHelper!.maybeAddressOf(tempName);
}
/**
* Maybe cast string subscript access for integer pointer parameters
*/
private _maybeCastStringSubscript(
ctx: Parser.ExpressionContext,
expr: string,
targetParamBaseType?: string,
): string {
if (!targetParamBaseType || !this.isStringSubscriptAccess(ctx)) {
return expr;
}
const cType = TYPE_MAP[targetParamBaseType];
if (cType && !["float", "double", "bool", "void"].includes(cType)) {
return this.cppHelper!.reinterpretCast(`${cType}*`, expr);
}
return expr;
}
/**
* Handle rvalue argument (literals or complex expressions)
*/
private _handleRvalueArg(
ctx: Parser.ExpressionContext,
targetParamBaseType?: string,
): string {
if (!targetParamBaseType) {
return this.generateExpression(ctx);
}
const cType = TYPE_MAP[targetParamBaseType];
if (!cType || cType === "void") {
return this.generateExpression(ctx);
}
const value = this.generateExpression(ctx);
// C++ mode: rvalues can bind to const T&
if (CodeGenState.cppMode) {
return value;
}
// C mode: Use compound literal syntax
return `&(${cType}){${value}}`;
}
// ========================================================================
// Declarations
// ========================================================================
private generateDeclaration(ctx: Parser.DeclarationContext): string {
// ADR-016: Handle scope declarations (renamed from namespace)
if (ctx.scopeDeclaration()) {
return this.generateScope(ctx.scopeDeclaration()!);
}
if (ctx.registerDeclaration()) {
return this.generateRegister(ctx.registerDeclaration()!);
}
// Issue #369: Skip struct/enum/bitmap definitions when self-include is added
// These types will be defined in the included header file
if (ctx.structDeclaration()) {
if (CodeGenState.selfIncludeAdded) {
return ""; // Definition will come from header
}
return this.generateStruct(ctx.structDeclaration()!);
}
// ADR-017: Handle enum declarations
if (ctx.enumDeclaration()) {
if (CodeGenState.selfIncludeAdded) {
return ""; // Definition will come from header
}
return this.generateEnum(ctx.enumDeclaration()!);
}
// ADR-034: Handle bitmap declarations
if (ctx.bitmapDeclaration()) {
Iif (CodeGenState.selfIncludeAdded) {
return ""; // Definition will come from header
}
return this.generateBitmap(ctx.bitmapDeclaration()!);
}
if (ctx.functionDeclaration()) {
return this.generateFunction(ctx.functionDeclaration()!);
}
if (ctx.variableDeclaration()) {
return this.generateVariableDecl(ctx.variableDeclaration()!) + "\n";
}
return "";
}
// ========================================================================
// Scope (ADR-016: Organization with visibility control)
// ========================================================================
private generateScope(ctx: Parser.ScopeDeclarationContext): string {
// ADR-053: Check registry for extracted generator
const generator = this.registry.getDeclaration("scope");
Eif (generator) {
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
// Fallback to inline implementation (will be removed after migration)
const name = ctx.IDENTIFIER().getText();
CodeGenState.currentScope = name;
const lines: string[] = [];
lines.push(`/* Scope: ${name} */`);
for (const member of ctx.scopeMember()) {
this._generateScopeMember(member, name, lines);
}
lines.push("");
CodeGenState.currentScope = null;
return lines.join("\n");
}
/**
* Generate code for a single scope member
*/
private _generateScopeMember(
member: Parser.ScopeMemberContext,
scopeName: string,
lines: string[],
): void {
const visibility = member.visibilityModifier()?.getText() || "private";
const isPrivate = visibility === "private";
if (member.variableDeclaration()) {
this._generateScopeVariable(
member.variableDeclaration()!,
scopeName,
isPrivate,
lines,
);
} else if (member.functionDeclaration()) {
this._generateScopeFunction(
member.functionDeclaration()!,
scopeName,
isPrivate,
lines,
);
} else if (member.enumDeclaration()) {
lines.push("", this.generateEnum(member.enumDeclaration()!));
} else if (member.bitmapDeclaration()) {
lines.push("", this.generateBitmap(member.bitmapDeclaration()!));
} else if (member.registerDeclaration()) {
lines.push(
"",
this.generateScopedRegister(member.registerDeclaration()!, scopeName),
);
}
}
/**
* Generate code for a scope variable declaration
*/
private _generateScopeVariable(
varDecl: Parser.VariableDeclarationContext,
scopeName: string,
isPrivate: boolean,
lines: string[],
): void {
const type = this.generateType(varDecl.type());
const varName = varDecl.IDENTIFIER().getText();
const fullName = `${scopeName}_${varName}`;
const prefix = isPrivate ? "static " : "";
const arrayDims = varDecl.arrayDimension();
const isArray = arrayDims.length > 0;
let decl = `${prefix}${type} ${fullName}`;
if (isArray) {
decl += this.generateArrayDimensions(arrayDims);
}
// ADR-045: Add string capacity dimension for string arrays
decl += this._getStringCapacityDimension(varDecl.type());
if (varDecl.expression()) {
decl += ` = ${this.generateExpression(varDecl.expression()!)}`;
} else {
// ADR-015: Zero initialization for uninitialized scope variables
decl += ` = ${this.getZeroInitializer(varDecl.type(), isArray)}`;
}
lines.push(decl + ";");
}
/**
* Get string capacity dimension if type is string<N>
*/
private _getStringCapacityDimension(typeCtx: Parser.TypeContext): string {
if (!typeCtx.stringType()) return "";
const intLiteral = typeCtx.stringType()!.INTEGER_LITERAL();
if (!intLiteral) return "";
const capacity = Number.parseInt(intLiteral.getText(), 10);
return `[${capacity + 1}]`;
}
/**
* Generate code for a scope function declaration
*/
private _generateScopeFunction(
funcDecl: Parser.FunctionDeclarationContext,
scopeName: string,
isPrivate: boolean,
lines: string[],
): void {
const returnType = this.generateType(funcDecl.type());
const funcName = funcDecl.IDENTIFIER().getText();
const fullName = `${scopeName}_${funcName}`;
const prefix = isPrivate ? "static " : "";
// Issue #269: Set current function name for pass-by-value lookup
CodeGenState.currentFunctionName = fullName;
// Issue #477: Set return type for enum inference in return statements
CodeGenState.currentFunctionReturnType = funcDecl.type().getText();
// Track parameters for ADR-006 pointer semantics
this._setParameters(funcDecl.parameterList() ?? null);
// ADR-016: Enter function body context (also clears modifiedParameters for Issue #281)
this.enterFunctionBody();
// Issue #281: Generate body FIRST to track parameter modifications
const body = this.generateBlock(funcDecl.block());
// Issue #281: Update symbol's parameter info with auto-const before generating params
this.updateFunctionParamsAutoConst(fullName);
// Now generate parameter list (can use modifiedParameters for auto-const)
const params = funcDecl.parameterList()
? this.generateParameterList(funcDecl.parameterList()!)
: "void";
// ADR-016: Exit function body context
this.exitFunctionBody();
CodeGenState.currentFunctionName = null;
CodeGenState.currentFunctionReturnType = null;
this._clearParameters();
lines.push("", `${prefix}${returnType} ${fullName}(${params}) ${body}`);
// ADR-029: Generate callback typedef only if used as a type
if (this.isCallbackTypeUsedAsFieldType(fullName)) {
const typedef = this.generateCallbackTypedef(fullName);
if (typedef) {
lines.push(typedef);
}
}
}
// ========================================================================
// Register Bindings (ADR-004)
// ========================================================================
private generateRegister(ctx: Parser.RegisterDeclarationContext): string {
// ADR-053: Check registry for extracted generator
const generator = this.registry.getDeclaration("register");
Eif (generator) {
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
// Fallback to inline implementation (will be removed after migration)
const name = ctx.IDENTIFIER().getText();
const baseAddress = this.generateExpression(ctx.expression());
const lines: string[] = [];
lines.push(`/* Register: ${name} @ ${baseAddress} */`);
// Generate individual #define for each register member with its offset
// This handles non-contiguous register layouts correctly (like i.MX RT1062)
for (const member of ctx.registerMember()) {
const regName = member.IDENTIFIER().getText();
const regType = this.generateType(member.type());
const access = member.accessModifier().getText();
const offset = this.generateExpression(member.expression());
// Determine qualifiers based on access mode
let cast = `volatile ${regType}*`;
if (access === "ro") {
cast = `volatile ${regType} const *`;
}
// Generate: #define GPIO7_DR (*(volatile uint32_t*)(0x42004000 + 0x00))
lines.push(
`#define ${name}_${regName} (*(${cast})(${baseAddress} + ${offset}))`,
);
}
lines.push("");
return lines.join("\n");
}
/**
* Generate register macros with scope prefix
* scope Teensy4 { register GPIO7 @ ... } generates Teensy4_GPIO7_* macros
*/
private generateScopedRegister(
ctx: Parser.RegisterDeclarationContext,
scopeName: string,
): string {
// ADR-053: Delegate to extracted generator
const result = scopedRegisterGenerator(
ctx,
scopeName,
this.getInput(),
this.getState(),
this,
);
this.applyEffects(result.effects);
return result.code;
}
// ========================================================================
// Struct
// ========================================================================
private generateStruct(ctx: Parser.StructDeclarationContext): string {
// ADR-053: Delegates to extracted StructGenerator
const generator = this.registry.getDeclaration("struct");
if (!generator) {
throw new Error("Error: struct generator not registered");
}
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
// ========================================================================
// Enum (ADR-017: Type-safe enums)
// ========================================================================
/**
* ADR-017: Generate enum declaration
* enum State { IDLE, RUNNING, ERROR <- 255 }
* -> typedef enum { State_IDLE = 0, State_RUNNING = 1, State_ERROR = 255 } State;
*
* ADR-053: Delegates to extracted EnumGenerator.
*/
private generateEnum(ctx: Parser.EnumDeclarationContext): string {
const generator = this.registry.getDeclaration("enum");
if (!generator) {
throw new Error("Error: enum generator not registered");
}
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
/**
* ADR-034: Generate bitmap declaration
* bitmap8 MotorFlags { Running, Direction, Mode[3], Reserved[2] }
* -> typedef uint8_t MotorFlags; (with field layout comment)
*
* ADR-053: Delegates to extracted generator if registered.
*/
private generateBitmap(ctx: Parser.BitmapDeclarationContext): string {
// ADR-053: Check registry for extracted generator
const generator = this.registry.getDeclaration("bitmap");
Eif (generator) {
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
// Fallback to inline implementation (will be removed after migration)
const name = ctx.IDENTIFIER().getText();
const prefix = CodeGenState.currentScope
? `${CodeGenState.currentScope}_`
: "";
const fullName = `${prefix}${name}`;
const backingType = CodeGenState.symbols!.bitmapBackingType.get(fullName);
Iif (!backingType) {
throw new Error(`Error: Bitmap ${fullName} not found in registry`);
}
this.requireInclude("stdint");
const lines: string[] = [];
// Generate comment with field layout
lines.push(`/* Bitmap: ${fullName} */`);
const fields = CodeGenState.symbols!.bitmapFields.get(fullName);
if (fields) {
lines.push("/* Fields:");
for (const [fieldName, info] of fields.entries()) {
const endBit = info.offset + info.width - 1;
const bitRange =
info.width === 1
? `bit ${info.offset}`
: `bits ${info.offset}-${endBit}`;
lines.push(
` * ${fieldName}: ${bitRange} (${info.width} bit${info.width > 1 ? "s" : ""})`,
);
}
lines.push(" */");
}
lines.push(`typedef ${backingType} ${fullName};`, "");
return lines.join("\n");
}
/**
* ADR-014: Generate struct initializer
* { x: 10, y: 20 } -> (Point){ .x = 10, .y = 20 } (type inferred from context)
*
* Note: Explicit type syntax (Point { x: 10 }) is rejected as redundant
* when type is already declared on the left side of assignment.
*/
private generateStructInitializer(
ctx: Parser.StructInitializerContext,
): string {
// Reject redundant type in struct initializer
// Wrong: const Point p <- Point { x: 0 };
// Right: const Point p <- { x: 0 };
Iif (ctx.IDENTIFIER() && CodeGenState.expectedType) {
const explicitType = ctx.IDENTIFIER()!.getText();
throw new Error(
`Redundant type '${explicitType}' in struct initializer. ` +
`Use '{ field: value }' syntax when type is already declared.`,
);
}
// Get type name - either explicit or inferred from context
let typeName: string;
Iif (ctx.IDENTIFIER()) {
typeName = ctx.IDENTIFIER()!.getText();
} else if (CodeGenState.expectedType) {
typeName = CodeGenState.expectedType;
} else E{
// This should not happen in valid code
throw new Error(
"Cannot infer struct type - no explicit type and no context",
);
}
const fieldList = ctx.fieldInitializerList();
// Issue #517: Check if this is a C++ class with a user-defined constructor.
// C++ classes with user-defined constructors are NOT aggregate types,
// so designated initializers { .field = value } don't work with them.
// We check the SymbolTable for a constructor symbol (TypeName::TypeName).
const isCppClass =
CodeGenState.cppMode && this._isCppClassWithConstructor(typeName);
Iif (!fieldList) {
// Empty initializer: Point {} -> (Point){ 0 } or {} for C++ classes
return isCppClass ? "{}" : `(${typeName}){ 0 }`;
}
// Get field type info for nested initializers
// Issue #502: Check both local struct fields and SymbolTable (for C++ header structs)
const structFieldTypes = CodeGenState.symbols!.structFields.get(typeName);
const fields = fieldList.fieldInitializer().map((field) => {
const fieldName = field.IDENTIFIER().getText();
// Set expected type for nested initializers
const savedExpectedType = CodeGenState.expectedType;
if (structFieldTypes?.has(fieldName)) {
// Issue #502: Convert underscore format to correct output format
// C-Next struct fields may store C++ types with _ separator (e.g., SeaDash_Parse_ParseResult)
// but code generation needs :: for C++ types (e.g., SeaDash::Parse::ParseResult)
let fieldType = structFieldTypes.get(fieldName)!;
Iif (fieldType.includes("_")) {
// Check if this looks like a qualified type (contains _) and convert
const parts = fieldType.split("_");
if (parts.length > 1 && this.isCppScopeSymbol(parts[0])) {
// It's a C++ namespaced type - convert _ to ::
fieldType = parts.join("::");
}
}
CodeGenState.expectedType = fieldType;
}
const value = this.generateExpression(field.expression());
// Restore expected type
CodeGenState.expectedType = savedExpectedType;
return { fieldName, value };
});
// Issue #517: For C++ classes, store assignments for later and return {}
Iif (isCppClass) {
for (const { fieldName, value } of fields) {
CodeGenState.pendingCppClassAssignments.push(
`${fieldName} = ${value};`,
);
}
return "{}";
}
// For C-Next/C structs, generate designated initializer
const fieldInits = fields.map((f) => `.${f.fieldName} = ${f.value}`);
return `(${typeName}){ ${fieldInits.join(", ")} }`;
}
/**
* ADR-035: Generate array initializer
* [1, 2, 3] -> {1, 2, 3}
* [0*] -> {0} (fill-all syntax)
* Returns: { elements: string, count: number } for size inference
*/
private generateArrayInitializer(
ctx: Parser.ArrayInitializerContext,
): string {
// Check for fill-all syntax: [value*]
if (ctx.expression() && ctx.getChild(2)?.getText() === "*") {
// Fill-all: [0*] -> {0}
const fillValue = this.generateExpression(ctx.expression()!);
// Store element count as 0 to signal fill-all (size comes from declaration)
CodeGenState.lastArrayInitCount = 0;
CodeGenState.lastArrayFillValue = fillValue;
return `{${fillValue}}`;
}
// Regular list: [1, 2, 3] -> {1, 2, 3}
const elements = ctx.arrayInitializerElement();
const generatedElements: string[] = [];
for (const elem of elements) {
if (elem.expression()) {
generatedElements.push(this.generateExpression(elem.expression()!));
E} else if (elem.structInitializer()) {
generatedElements.push(
this.generateStructInitializer(elem.structInitializer()!),
);
} else if (elem.arrayInitializer()) {
// Nested array for multi-dimensional
generatedElements.push(
this.generateArrayInitializer(elem.arrayInitializer()!),
);
}
}
// Store element count for size inference
CodeGenState.lastArrayInitCount = generatedElements.length;
CodeGenState.lastArrayFillValue = undefined;
return `{${generatedElements.join(", ")}}`;
}
// ========================================================================
// Functions
// ========================================================================
private generateFunction(ctx: Parser.FunctionDeclarationContext): string {
// ADR-053: Check registry for extracted generator
const generator = this.registry.getDeclaration("function");
Eif (generator) {
const result = generator(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
return result.code;
}
// Fallback to inline implementation (will be removed after migration)
const returnType = this.generateType(ctx.type());
const name = ctx.IDENTIFIER().getText();
// Set up function context
this._setupFunctionContext(name, ctx);
// Check for main function with args parameter (u8 args[][])
const isMainWithArgs = CodegenParserUtils.isMainFunctionWithArgs(
name,
ctx.parameterList(),
);
// Get return type and params, handling main with args special case
const { actualReturnType, initialParams } =
this._resolveReturnTypeAndParams(name, returnType, isMainWithArgs, ctx);
// Generate body first (this populates modifiedParameters)
const body = this.generateBlock(ctx.block());
// Issue #268: Update symbol's parameter info with auto-const before clearing
this.updateFunctionParamsAutoConst(name);
// Now generate parameter list (can use modifiedParameters for auto-const)
let params: string;
if (isMainWithArgs) {
params = initialParams;
} else if (ctx.parameterList()) {
params = this.generateParameterList(ctx.parameterList()!);
} else {
params = "void";
}
// Clean up function context
this._cleanupFunctionContext();
const functionCode = `${actualReturnType} ${name}(${params}) ${body}\n`;
// ADR-029: Generate callback typedef only if this function is used as a type
return this._appendCallbackTypedefIfNeeded(name, functionCode);
}
/**
* Set up context for function generation
*/
private _setupFunctionContext(
name: string,
ctx: Parser.FunctionDeclarationContext,
): void {
// Issue #269: Set current function name for pass-by-value lookup
const fullFuncName = CodeGenState.currentScope
? `${CodeGenState.currentScope}_${name}`
: name;
CodeGenState.currentFunctionName = fullFuncName;
// Issue #477: Set return type for enum inference in return statements
CodeGenState.currentFunctionReturnType = ctx.type().getText();
// Track parameters for ADR-006 pointer semantics
this._setParameters(ctx.parameterList() ?? null);
// ADR-016: Clear local variables and mark that we're in a function body
CodeGenState.localVariables.clear();
CodeGenState.floatBitShadows.clear();
CodeGenState.floatShadowCurrent.clear();
CodeGenState.inFunctionBody = true;
}
/**
* Resolve return type and initial params for function
*/
private _resolveReturnTypeAndParams(
name: string,
returnType: string,
isMainWithArgs: boolean,
ctx: Parser.FunctionDeclarationContext,
): { actualReturnType: string; initialParams: string } {
if (isMainWithArgs) {
// Special case: main(u8 args[][]) -> int main(int argc, char *argv[])
const argsParam = ctx.parameterList()!.parameter()[0];
CodeGenState.mainArgsName = argsParam.IDENTIFIER().getText();
return {
actualReturnType: "int",
initialParams: "int argc, char *argv[]",
};
}
// For main() without args, always use int return type for C++ compatibility
const actualReturnType = name === "main" ? "int" : returnType;
return { actualReturnType, initialParams: "" };
}
/**
* Clean up context after function generation
*/
private _cleanupFunctionContext(): void {
CodeGenState.inFunctionBody = false;
CodeGenState.localVariables.clear();
CodeGenState.floatBitShadows.clear();
CodeGenState.floatShadowCurrent.clear();
CodeGenState.mainArgsName = null;
CodeGenState.currentFunctionName = null;
CodeGenState.currentFunctionReturnType = null;
this._clearParameters();
}
/**
* Append callback typedef if function is used as a field type
*/
private _appendCallbackTypedefIfNeeded(
name: string,
functionCode: string,
): string {
if (name === "main") {
return functionCode;
}
if (!this.isCallbackTypeUsedAsFieldType(name)) {
return functionCode;
}
const typedef = this.generateCallbackTypedef(name);
return typedef ? functionCode + typedef : functionCode;
}
private generateParameter(ctx: Parser.ParameterContext): string {
const constMod = ctx.constModifier() ? "const " : "";
const typeName = this.getTypeName(ctx.type());
const name = ctx.IDENTIFIER().getText();
const dims = ctx.arrayDimension();
// ADR-029: Check if this is a callback type parameter
if (CodeGenState.callbackTypes.has(typeName)) {
const callbackInfo = CodeGenState.callbackTypes.get(typeName)!;
return `${callbackInfo.typedefName} ${name}`;
}
const type = this.generateType(ctx.type());
// Try special cases first
const stringArrayResult = this._tryGenerateStringArrayParam(
ctx,
constMod,
name,
dims,
);
if (stringArrayResult) return stringArrayResult;
const arrayResult = this._tryGenerateArrayParam(constMod, type, name, dims);
if (arrayResult) return arrayResult;
// Pass-by-value types
if (this._isPassByValueType(typeName, name)) {
return `${constMod}${type} ${name}`;
}
// Non-array string parameters
const stringResult = this._tryGenerateStringParam(
ctx,
constMod,
name,
dims,
);
if (stringResult) return stringResult;
// Pass-by-reference types
const refResult = this._tryGenerateRefParam(constMod, type, typeName, name);
if (refResult) return refResult;
// Unknown types use pass-by-value (standard C semantics)
return `${constMod}${type} ${name}`;
}
/**
* Try to generate string array parameter: string<N>[] -> char arr[n][N+1]
*/
private _tryGenerateStringArrayParam(
ctx: Parser.ParameterContext,
constMod: string,
name: string,
dims: Parser.ArrayDimensionContext[],
): string | null {
if (!ctx.type().stringType() || dims.length === 0) {
return null;
}
const stringType = ctx.type().stringType()!;
const capacity = stringType.INTEGER_LITERAL()
? Number.parseInt(stringType.INTEGER_LITERAL()!.getText(), 10)
: 256;
const dimStr = dims.map((d) => this.generateArrayDimension(d)).join("");
return `${constMod}char ${name}${dimStr}[${capacity + 1}]`;
}
/**
* Try to generate array parameter with auto-const
*/
private _tryGenerateArrayParam(
constMod: string,
type: string,
name: string,
dims: Parser.ArrayDimensionContext[],
): string | null {
if (dims.length === 0) {
return null;
}
const dimStr = dims.map((d) => this.generateArrayDimension(d)).join("");
const wasModified = this._isCurrentParameterModified(name);
const autoConst = !wasModified && !constMod ? "const " : "";
return `${autoConst}${constMod}${type} ${name}${dimStr}`;
}
/**
* Check if type should use pass-by-value semantics
*/
private _isPassByValueType(typeName: string, name: string): boolean {
// ISR, float, enum types
Iif (typeName === "ISR") return true;
if (this._isFloatType(typeName)) return true;
if (CodeGenState.symbols!.knownEnums.has(typeName)) return true;
// Small unmodified primitives
if (
CodeGenState.currentFunctionName &&
this._isParameterPassByValueByName(CodeGenState.currentFunctionName, name)
) {
return true;
}
return false;
}
/**
* Try to generate non-array string parameter: string<N> -> char*
*/
private _tryGenerateStringParam(
ctx: Parser.ParameterContext,
constMod: string,
name: string,
dims: Parser.ArrayDimensionContext[],
): string | null {
if (!ctx.type().stringType() || dims.length !== 0) {
return null;
}
const wasModified = this._isCurrentParameterModified(name);
const autoConst = !wasModified && !constMod ? "const " : "";
return `${autoConst}${constMod}char* ${name}`;
}
/**
* Try to generate pass-by-reference parameter for known types
*/
private _tryGenerateRefParam(
constMod: string,
type: string,
typeName: string,
name: string,
): string | null {
if (!this.isKnownStruct(typeName) && !this._isKnownPrimitive(typeName)) {
return null;
}
const wasModified = this._isCurrentParameterModified(name);
const autoConst = !wasModified && !constMod ? "const " : "";
const refOrPtr = this.cppHelper!.refOrPtr();
return `${autoConst}${constMod}${type}${refOrPtr} ${name}`;
}
// ========================================================================
// Variables
// ========================================================================
private generateVariableDecl(ctx: Parser.VariableDeclarationContext): string {
// Issue #375: Check for C++ constructor syntax - early return
const constructorArgList = ctx.constructorArgumentList();
Iif (constructorArgList) {
return this._generateConstructorDecl(ctx, constructorArgList);
}
// Issue #696: Use helper for modifier extraction and validation
const modifiers = VariableModifierBuilder.build(
ctx,
CodeGenState.inFunctionBody,
);
const name = ctx.IDENTIFIER().getText();
const typeCtx = ctx.type();
const type = this._inferVariableType(ctx, name);
// Track local variable metadata
this._trackLocalVariable(ctx, name);
// ADR-045: Handle bounded string type specially - early return
const stringResult = this.stringDeclHelper!.generateStringDecl(
typeCtx,
name,
ctx.expression() ?? null,
ctx.arrayDimension(),
modifiers,
ctx.constModifier() !== null,
);
if (stringResult.handled) {
return stringResult.code;
}
// Build base declaration
const modifierPrefix = VariableModifierBuilder.toPrefix(modifiers);
let decl = `${modifierPrefix}${type} ${name}`;
// Handle array declarations - early return if array init handled
const arrayResult = this._handleArrayDeclaration(ctx, typeCtx, name, decl);
if (arrayResult.handled) {
return arrayResult.code;
}
decl = arrayResult.decl;
// Handle initialization
decl = this._generateVariableInitializer(
ctx,
typeCtx,
decl,
arrayResult.isArray,
);
// Handle pending C++ class field assignments
return this._finalizeCppClassAssignments(ctx, typeCtx, name, decl);
}
/**
* Issue #696: Infer variable type, handling nullable C pointer types.
*/
private _inferVariableType(
ctx: Parser.VariableDeclarationContext,
name: string,
): string {
let type = this.generateType(ctx.type());
// ADR-046: Handle nullable C pointer types (c_ prefix variables)
Eif (!name.startsWith("c_") || !ctx.expression()) {
return type;
}
const exprText = ctx.expression()!.getText();
for (const funcName of NullCheckAnalyzer.getStructPointerFunctions()) {
if (exprText.includes(`${funcName}(`)) {
return `${type}*`;
}
}
return type;
}
/**
* Issue #696: Track local variable for type registry and const values.
*/
private _trackLocalVariable(
ctx: Parser.VariableDeclarationContext,
name: string,
): void {
if (!CodeGenState.inFunctionBody) {
return;
}
this.trackVariableType(ctx);
CodeGenState.localVariables.add(name);
// Bug #8: Track local const values for array size and bit index resolution
if (ctx.constModifier() && ctx.expression()) {
const constValue = this.tryEvaluateConstant(ctx.expression()!);
if (constValue !== undefined) {
CodeGenState.constValues.set(name, constValue);
}
}
}
/**
* Issue #696: Handle array declaration with dimension parsing and init.
*/
private _handleArrayDeclaration(
ctx: Parser.VariableDeclarationContext,
typeCtx: Parser.TypeContext,
name: string,
decl: string,
): { handled: boolean; code: string; decl: string; isArray: boolean } {
const arrayDims = ctx.arrayDimension();
const isArray = arrayDims.length > 0;
if (!isArray) {
return { handled: false, code: "", decl, isArray: false };
}
const hasEmptyArrayDim = arrayDims.some((dim) => !dim.expression());
const declaredSize = this._parseFirstArrayDimension(arrayDims);
// ADR-035: Handle array initializers with size inference
if (ctx.expression()) {
const arrayInitResult = this.arrayInitHelper!.processArrayInit(
name,
typeCtx,
ctx.expression()!,
arrayDims,
hasEmptyArrayDim,
declaredSize,
);
Eif (arrayInitResult) {
return {
handled: true,
code: `${decl}${arrayInitResult.dimensionSuffix} = ${arrayInitResult.initValue};`,
decl,
isArray: true,
};
}
}
// Generate dimensions and track as local array
const newDecl = decl + this.generateArrayDimensions(arrayDims);
CodeGenState.localArrays.add(name);
return { handled: false, code: "", decl: newDecl, isArray: true };
}
/**
* Issue #696: Parse first array dimension for validation.
*/
private _parseFirstArrayDimension(
arrayDims: Parser.ArrayDimensionContext[],
): number | null {
if (arrayDims.length === 0 || !arrayDims[0].expression()) {
return null;
}
const sizeText = arrayDims[0].expression()!.getText();
if (/^\d+$/.exec(sizeText)) {
return Number.parseInt(sizeText, 10);
}
return null;
}
/**
* Issue #696: Generate variable initializer with validation.
*/
private _generateVariableInitializer(
ctx: Parser.VariableDeclarationContext,
typeCtx: Parser.TypeContext,
decl: string,
isArray: boolean,
): string {
if (!ctx.expression()) {
// ADR-015: Zero initialization for uninitialized variables
return `${decl} = ${this.getZeroInitializer(typeCtx, isArray)}`;
}
const typeName = this.getTypeName(typeCtx);
const savedExpectedType = CodeGenState.expectedType;
CodeGenState.expectedType = typeName;
// ADR-017: Validate enum type for initialization
this.enumValidator!.validateEnumAssignment(typeName, ctx.expression()!);
// ADR-024: Validate integer literals and type conversions
this._validateIntegerInitializer(ctx, typeName);
const result = `${decl} = ${this.generateExpression(ctx.expression()!)}`;
CodeGenState.expectedType = savedExpectedType;
return result;
}
/**
* Issue #696: Validate integer initializer using helper.
*/
private _validateIntegerInitializer(
ctx: Parser.VariableDeclarationContext,
typeName: string,
): void {
if (!this._isIntegerType(typeName)) {
return;
}
const exprText = ctx.expression()!.getText().trim();
const line = ctx.start?.line ?? 0;
const col = ctx.start?.column ?? 0;
const isLiteral = LiteralUtils.parseIntegerLiteral(exprText) !== undefined;
try {
if (isLiteral) {
// Direct literal - validate it fits in the target type
this._validateLiteralFitsType(exprText, typeName);
} else {
// Not a literal - check for narrowing/sign conversions
const sourceType = this.getExpressionType(ctx.expression()!);
this._validateTypeConversion(typeName, sourceType);
}
} catch (validationError) {
const msg =
validationError instanceof Error
? validationError.message
: String(validationError);
throw new Error(`${line}:${col} ${msg}`, { cause: validationError });
}
}
/**
* Issue #696: Handle pending C++ class field assignments.
*/
private _finalizeCppClassAssignments(
_ctx: Parser.VariableDeclarationContext,
typeCtx: Parser.TypeContext,
name: string,
decl: string,
): string {
Eif (CodeGenState.pendingCppClassAssignments.length === 0) {
return `${decl};`;
}
if (CodeGenState.inFunctionBody) {
const assignments = CodeGenState.pendingCppClassAssignments
.map((a) => `${name}.${a}`)
.join("\n");
CodeGenState.pendingCppClassAssignments = [];
return `${decl};\n${assignments}`;
}
// At global scope, we can't emit assignment statements.
CodeGenState.pendingCppClassAssignments = [];
throw new Error(
`Error: C++ class '${this.getTypeName(typeCtx)}' with constructor cannot use struct initializer ` +
`syntax at global scope. Use constructor syntax or initialize fields separately.`,
);
}
/**
* Issue #375: Generate C++ constructor-style declaration
* Validates that all arguments are const variables.
* Example: `Adafruit_MAX31856 thermocouple(pinConst);` -> `Adafruit_MAX31856 thermocouple(pinConst);`
*/
private _generateConstructorDecl(
ctx: Parser.VariableDeclarationContext,
argListCtx: Parser.ConstructorArgumentListContext,
): string {
const type = this.generateType(ctx.type());
const name = ctx.IDENTIFIER().getText();
const line = ctx.start?.line ?? 0;
// Collect and validate all arguments
const argIdentifiers = argListCtx.IDENTIFIER();
const resolvedArgs: string[] = [];
for (const argNode of argIdentifiers) {
const argName = argNode.getText();
// Check if it exists in type registry
const typeInfo = CodeGenState.typeRegistry.get(argName);
// Also check scoped variables if inside a scope
let scopedArgName = argName;
let scopedTypeInfo = typeInfo;
if (!typeInfo && CodeGenState.currentScope) {
scopedArgName = `${CodeGenState.currentScope}_${argName}`;
scopedTypeInfo = CodeGenState.typeRegistry.get(scopedArgName);
}
if (!typeInfo && !scopedTypeInfo) {
throw new Error(
`Error at line ${line}: Constructor argument '${argName}' is not declared`,
);
}
const finalTypeInfo = typeInfo ?? scopedTypeInfo!;
const finalArgName = typeInfo ? argName : scopedArgName;
// Check if it's const
if (!finalTypeInfo.isConst) {
throw new Error(
`Error at line ${line}: Constructor argument '${argName}' must be const. ` +
`C++ constructors in C-Next only accept const variables.`,
);
}
resolvedArgs.push(finalArgName);
}
// Track the variable in type registry (as an external C++ type)
CodeGenState.typeRegistry.set(name, {
baseType: type,
bitWidth: 0, // Unknown for C++ types
isArray: false,
arrayDimensions: [],
isConst: false,
isExternalCppType: true,
});
// Track as local variable if inside function body
if (CodeGenState.inFunctionBody) {
CodeGenState.localVariables.add(name);
}
return `${type} ${name}(${resolvedArgs.join(", ")});`;
}
/**
* Get zero initializer for array types.
* Issue #379: C++ class arrays must use {} instead of {0}
*/
private _getArrayZeroInitializer(typeCtx: Parser.TypeContext): string {
// Check if element type is a C++ class or template type
if (typeCtx.userType()) {
const typeName = typeCtx.userType()!.getText();
Iif (this._needsEmptyBraceInit(typeName)) {
return "{}";
}
}
// Template types are always C++ classes
Iif (typeCtx.templateType()) {
return "{}";
}
// Default: POD arrays use {0}
return "{0}";
}
/**
* Get zero initializer for an enum type.
* Returns member with value 0, or first member, or casted 0.
* ADR-017: Enums initialize to first member
*/
private _getEnumZeroValue(enumName: string, separator: string = "_"): string {
const members = CodeGenState.symbols!.enumMembers.get(enumName);
Iif (!members) {
return `(${enumName})0`;
}
// Find member with explicit value 0
for (const [memberName, value] of members.entries()) {
if (value === 0) {
return `${enumName}${separator}${memberName}`;
}
}
// Fall back to first member
const firstMember = members.keys().next().value;
Eif (firstMember) {
return `${enumName}${separator}${firstMember}`;
}
return `(${enumName})0`;
}
/**
* Resolve full type name from any TypeContext variant.
* Returns { name, separator, checkCppType } or null if not a named type.
* ADR-016: Handles scoped, global, qualified, and user types
* checkCppType: only true for userType (original behavior preserved)
*/
private _resolveTypeNameFromContext(
typeCtx: Parser.TypeContext,
): { name: string; separator: string; checkCppType: boolean } | null {
// ADR-016: Check for scoped types (this.Type)
if (typeCtx.scopedType()) {
const localName = typeCtx.scopedType()!.IDENTIFIER().getText();
const name = CodeGenState.currentScope
? `${CodeGenState.currentScope}_${localName}`
: localName;
return { name, separator: "_", checkCppType: false };
}
// Issue #478: Check for global types (global.Type)
if (typeCtx.globalType()) {
return {
name: typeCtx.globalType()!.IDENTIFIER().getText(),
separator: "_",
checkCppType: false,
};
}
// ADR-016: Check for qualified types (Scope.Type)
// Issue #388: Also handles C++ namespace types (MockLib.Parse.ParseResult)
if (typeCtx.qualifiedType()) {
const parts = typeCtx.qualifiedType()!.IDENTIFIER();
const name = this.resolveQualifiedType(parts.map((id) => id.getText()));
const separator = name.includes("::") ? "::" : "_";
return { name, separator, checkCppType: false };
}
// Check for user-defined types (structs/classes/enums)
if (typeCtx.userType()) {
return {
name: typeCtx.userType()!.getText(),
separator: "_",
checkCppType: true,
};
}
return null;
}
/**
* Check if a type needs empty brace initialization {}.
* Issue #304: C++ types with constructors may fail with {0}
* Issue #309: Unknown user types in C++ mode may have non-trivial constructors
*/
private _needsEmptyBraceInit(typeName: string): boolean {
// C++ types (external libraries with constructors)
Iif (this.isCppType(typeName)) {
return true;
}
// In C++ mode, unknown user types may have non-trivial constructors
// Known structs (C-Next or C headers) are POD types where {0} works
return CodeGenState.cppMode && !this.isKnownStruct(typeName);
}
/**
* Generate a safe bit mask expression.
* Avoids undefined behavior when width >= 32 for 32-bit integers.
* @param width The width expression (may be a literal or expression)
* @param isF64 If true, generate 64-bit masks with ULL suffix (for f64 bit indexing)
*/
// ========================================================================
// Statements
// Issue #644: _generateBitMask removed, now delegating to BitUtils.generateMask
// ========================================================================
// ADR-109: Build handler dependencies for assignment dispatch
private buildHandlerDeps(): IHandlerDeps {
return {
symbols: CodeGenState.symbols!,
typeRegistry: CodeGenState.typeRegistry,
currentScope: CodeGenState.currentScope,
currentParameters: CodeGenState.currentParameters,
targetCapabilities: CodeGenState.targetCapabilities,
generateExpression: (ctx) => this.generateExpression(ctx),
tryEvaluateConstant: (ctx) => this.tryEvaluateConstant(ctx),
generateAssignmentTarget: (ctx) => this.generateAssignmentTarget(ctx),
isKnownStruct: (name) => this.isKnownStruct(name),
isKnownScope: (name) => this.isKnownScope(name),
getMemberTypeInfo: (structType, memberName) =>
this.getMemberTypeInfo(structType, memberName),
validateBitmapFieldLiteral: (expr, width, fieldName) =>
this.typeValidator!.validateBitmapFieldLiteral(expr, width, fieldName),
validateCrossScopeVisibility: (scopeName, memberName) =>
this.validateCrossScopeVisibility(scopeName, memberName),
checkArrayBounds: (arrayName, dimensions, indexExprs, line) =>
this.typeValidator!.checkArrayBounds(
arrayName,
[...dimensions],
[...indexExprs],
line,
(expr) => this.tryEvaluateConstant(expr),
),
analyzeMemberChainForBitAccess: (targetCtx) =>
this.analyzeMemberChainForBitAccess(targetCtx),
generateFloatBitWrite: (name, typeInfo, bitIndex, width, value) =>
this.generateFloatBitWrite(name, typeInfo, bitIndex, width, value),
foldBooleanToInt: (expr) => this.foldBooleanToInt(expr),
markNeedsString: () => {
this.requireInclude("string");
},
markClampOpUsed: (op, typeName) => this.markClampOpUsed(op, typeName),
generateAtomicRMW: (target, cOp, value, typeInfo) =>
this.generateAtomicRMW(target, cOp, value, typeInfo),
};
}
/**
* Analyze a member chain target to detect bit access at the end.
* Issue #644: Delegates to MemberChainAnalyzer.
*/
private analyzeMemberChainForBitAccess(
targetCtx: Parser.AssignmentTargetContext,
): {
isBitAccess: boolean;
baseTarget?: string;
bitIndex?: string;
baseType?: string;
} {
return this.memberChainAnalyzer!.analyze(targetCtx);
}
/**
* Generate float bit write using shadow variable + memcpy.
* Issue #644: Delegates to FloatBitHelper.
*/
private generateFloatBitWrite(
name: string,
typeInfo: TTypeInfo,
bitIndex: string,
width: string | null,
value: string,
): string | null {
return this.floatBitHelper!.generateFloatBitWrite(
name,
typeInfo,
bitIndex,
width,
value,
);
}
// ADR-001: <- becomes = in C, with compound assignment operators
private generateAssignment(ctx: Parser.AssignmentStatementContext): string {
const targetCtx = ctx.assignmentTarget();
// Issue #644: Set expected type for inferred struct initializers and overflow behavior
// Delegated to AssignmentExpectedTypeResolver helper
const savedExpectedType = CodeGenState.expectedType;
const savedAssignmentContext = { ...CodeGenState.assignmentContext };
const resolved = this.expectedTypeResolver!.resolve(targetCtx);
if (resolved.expectedType) {
CodeGenState.expectedType = resolved.expectedType;
}
if (resolved.assignmentContext) {
CodeGenState.assignmentContext = resolved.assignmentContext;
}
const value = this.generateExpression(ctx.expression());
// Restore expected type and assignment context
CodeGenState.expectedType = savedExpectedType;
CodeGenState.assignmentContext = savedAssignmentContext;
// Get the assignment operator and map to C equivalent
const operatorCtx = ctx.assignmentOperator();
const cnextOp = operatorCtx.getText();
const cOp = ASSIGNMENT_OPERATOR_MAP[cnextOp] || "=";
const isCompound = cOp !== "=";
// Issue #644: Validate assignment (const, enum, integer, array bounds, callbacks)
// Delegated to AssignmentValidator helper to reduce cognitive complexity
this.assignmentValidator!.validate(
targetCtx,
ctx.expression(),
isCompound,
ctx.start?.line ?? 0,
);
// ADR-109: Dispatch to assignment handlers
// Build context, classify, and dispatch - all patterns handled by handlers
const assignCtx = buildAssignmentContext(ctx, {
typeRegistry: CodeGenState.typeRegistry,
generateExpression: () => value,
});
const handlerDeps = this.buildHandlerDeps();
const classifier = new AssignmentClassifier({
symbols: handlerDeps.symbols,
typeRegistry: handlerDeps.typeRegistry,
currentScope: handlerDeps.currentScope,
isKnownStruct: handlerDeps.isKnownStruct,
isKnownScope: handlerDeps.isKnownScope,
getMemberTypeInfo: handlerDeps.getMemberTypeInfo,
});
const assignmentKind = classifier.classify(assignCtx);
const handler = AssignmentHandlerRegistry.getHandler(assignmentKind);
return handler(assignCtx, handlerDeps);
}
/**
* ADR-049: Generate atomic Read-Modify-Write operation
* Uses LDREX/STREX on platforms that support it, otherwise PRIMASK
*/
private generateAtomicRMW(
target: string,
cOp: string,
value: string,
typeInfo: TTypeInfo,
): string {
const result = atomicGenerators.generateAtomicRMW(
target,
cOp,
value,
typeInfo,
CodeGenState.targetCapabilities,
);
this.applyEffects(result.effects);
return result.code;
}
/**
* Build dependencies for SimpleIdentifierResolver
*/
private _buildSimpleIdentifierDeps(): ISimpleIdentifierDeps {
return {
getParameterInfo: (name: string) =>
CodeGenState.currentParameters.get(name),
resolveParameter: (name: string, paramInfo: TParameterInfo) =>
ParameterDereferenceResolver.resolve(
name,
paramInfo,
this._buildParameterDereferenceDeps(),
),
isLocalVariable: (name: string) => CodeGenState.localVariables.has(name),
resolveBareIdentifier: (name: string, isLocal: boolean) =>
this.typeValidator!.resolveBareIdentifier(name, isLocal, (n: string) =>
this.isKnownStruct(n),
),
};
}
/**
* Extract postfix operations from parser contexts
*/
private _extractPostfixOperations(
postfixOps: Parser.PostfixTargetOpContext[],
): IPostfixOperation[] {
return postfixOps.map((op) => ({
memberName: op.IDENTIFIER()?.getText() ?? null,
expressions: op.expression(),
}));
}
/**
* Build dependencies for PostfixChainBuilder
*/
private _buildPostfixChainDeps(
firstId: string,
hasGlobal: boolean,
hasThis: boolean,
): IPostfixChainDeps {
const paramInfo = CodeGenState.currentParameters.get(firstId);
const isStructParam = paramInfo?.isStruct ?? false;
const isCppAccess = hasGlobal && this.isCppScopeSymbol(firstId);
const separatorDeps = this._buildMemberSeparatorDeps();
const separatorCtx: ISeparatorContext =
MemberSeparatorResolver.buildContext(
firstId,
hasGlobal,
hasThis,
CodeGenState.currentScope,
isStructParam,
separatorDeps,
isCppAccess,
);
return {
generateExpression: (expr: unknown) =>
this.generateExpression(expr as Parser.ExpressionContext),
getSeparator: (
isFirstOp: boolean,
identifierChain: string[],
memberName: string,
) =>
MemberSeparatorResolver.getSeparator(
isFirstOp,
identifierChain,
memberName,
separatorCtx,
separatorDeps,
),
};
}
// ADR-016: _validateCrossScopeVisibility moved to ScopeResolver
// Issue #387: Dead methods removed (generateGlobalMemberAccess, generateGlobalArrayAccess,
// generateThisMemberAccess, generateThisArrayAccess) - now handled by unified doGenerateAssignmentTarget
private generateIf(ctx: Parser.IfStatementContext): string {
return this.invokeStatement("if", ctx);
}
private generateWhile(ctx: Parser.WhileStatementContext): string {
return this.invokeStatement("while", ctx);
}
private generateDoWhile(ctx: Parser.DoWhileStatementContext): string {
return this.invokeStatement("do-while", ctx);
}
private generateFor(ctx: Parser.ForStatementContext): string {
return this.invokeStatement("for", ctx);
}
private generateReturn(ctx: Parser.ReturnStatementContext): string {
return this.invokeStatement("return", ctx);
}
// ========================================================================
// Critical Statements (ADR-050)
// ========================================================================
/**
* ADR-050: Generate critical statement with PRIMASK wrapper
* Ensures atomic execution of multi-variable operations
*/
private generateCriticalStatement(
ctx: Parser.CriticalStatementContext,
): string {
return this.invokeStatement("critical", ctx);
}
// Issue #63: validateNoEarlyExits moved to TypeValidator
// ========================================================================
// Switch Statements (ADR-025)
// ========================================================================
private generateSwitch(ctx: Parser.SwitchStatementContext): string {
return this.invokeStatement("switch", ctx);
}
// ========================================================================
// Expressions
// ========================================================================
// Issue #63: validateShiftAmount, getTypeWidth, evaluateShiftAmount,
// evaluateUnaryExpression moved to TypeValidator
/**
* Get the type of an additive expression.
*/
private _getAdditiveExpressionType(
ctx: Parser.AdditiveExpressionContext,
): string | null {
// For simple case, get type from first multiplicative expression
const multExprs = ctx.multiplicativeExpression();
Iif (multExprs.length === 0) return null;
return this.getMultiplicativeExpressionType(multExprs[0]);
}
/**
* Get the type of a multiplicative expression.
*/
private getMultiplicativeExpressionType(
ctx: Parser.MultiplicativeExpressionContext,
): string | null {
const unaryExprs = ctx.unaryExpression();
Iif (unaryExprs.length === 0) return null;
return this.getUnaryExpressionType(unaryExprs[0]);
}
/**
* Resolve 'this' keyword to scope marker
* ADR-016: 'this' returns a marker that postfixOps will transform to Scope_member
*/
private _resolveThisKeyword(): string {
if (!CodeGenState.currentScope) {
throw new Error("Error: 'this' can only be used inside a scope");
}
return "__THIS_SCOPE__";
}
/**
* Resolve an identifier in a primary expression context
* Handles: main args, parameters, local variables, scope resolution, enum members
*/
private _resolveIdentifierExpression(id: string): string {
// Special case: main function's args parameter -> argv
Iif (CodeGenState.mainArgsName && id === CodeGenState.mainArgsName) {
return "argv";
}
// ADR-006: Check if it's a function parameter
const paramInfo = CodeGenState.currentParameters.get(id);
if (paramInfo) {
return ParameterDereferenceResolver.resolve(
id,
paramInfo,
this._buildParameterDereferenceDeps(),
);
}
// ADR-016: Resolve bare identifier using local -> scope -> global priority
const isLocalVariable = CodeGenState.localVariables.has(id);
const resolved = this.typeValidator!.resolveBareIdentifier(
id,
isLocalVariable,
(name: string) => this.isKnownStruct(name),
);
if (resolved !== null) {
// Issue #741: Check if this is a private const that should be inlined
const constValue =
CodeGenState.symbols!.scopePrivateConstValues.get(resolved);
if (constValue !== undefined) {
return constValue;
}
return resolved;
}
// Issue #452: Check if identifier is an unqualified enum member reference
const enumResolved = this._resolveUnqualifiedEnumMember(id);
Iif (enumResolved !== null) {
return enumResolved;
}
return id;
}
/**
* Resolve an unqualified identifier as an enum member
* Issue #452: Uses expectedType for type-aware resolution, falls back to searching all enums
* @returns The qualified enum member access, or null if not an enum member
*/
private _resolveUnqualifiedEnumMember(id: string): string | null {
// Type-aware resolution: check only the expected enum type
if (
CodeGenState.expectedType &&
CodeGenState.symbols!.knownEnums.has(CodeGenState.expectedType)
) {
const members = CodeGenState.symbols!.enumMembers.get(
CodeGenState.expectedType,
);
Iif (members?.has(id)) {
return `${CodeGenState.expectedType}${this.getScopeSeparator(false)}${id}`;
}
return null;
}
// No expected enum type - search all enums but error on ambiguity
const matchingEnums: string[] = [];
for (const [enumName, members] of CodeGenState.symbols!.enumMembers) {
if (members.has(id)) {
matchingEnums.push(enumName);
}
}
Iif (matchingEnums.length === 1) {
return `${matchingEnums[0]}${this.getScopeSeparator(false)}${id}`;
}
if (matchingEnums.length > 1) {
throw new Error(
`Error: Ambiguous enum member '${id}' exists in multiple enums: ${matchingEnums.join(", ")}. Use qualified access (e.g., ${matchingEnums[0]}.${id})`,
);
}
return null;
}
/**
* Generate a literal expression with C++ mode handling
* ADR-053 A2: Uses extracted literal generator
*/
private _generateLiteralExpression(ctx: Parser.LiteralContext): string {
const result = generateLiteral(ctx, this.getInput(), this.getState(), this);
this.applyEffects(result.effects);
// Issue #304/#644: Transform NULL → nullptr in C++ mode
if (result.code === "NULL") {
return this.cppHelper!.nullLiteral();
}
return result.code;
}
/**
* ADR-017: Generate cast expression
* C mode: (u8)State.IDLE -> (uint8_t)State_IDLE
* C++ mode: (u8)State.IDLE -> static_cast<uint8_t>(State_IDLE)
* Issue #267: Use C++ casts when cppMode is enabled
*/
private generateCastExpression(ctx: Parser.CastExpressionContext): string {
const targetType = this.generateType(ctx.type());
const targetTypeName = ctx.type().getText();
// ADR-024: Validate integer casts for narrowing and sign conversion
Eif (this._isIntegerType(targetTypeName)) {
const sourceType = this.getUnaryExpressionType(ctx.unaryExpression());
Iif (sourceType && this._isIntegerType(sourceType)) {
if (this.isNarrowingConversion(sourceType, targetTypeName)) {
const targetWidth = TYPE_WIDTH[targetTypeName] || 0;
throw new Error(
`Error: Cannot cast ${sourceType} to ${targetTypeName} (narrowing). ` +
`Use bit indexing: expr[0, ${targetWidth}]`,
);
}
if (this.isSignConversion(sourceType, targetTypeName)) {
const targetWidth = TYPE_WIDTH[targetTypeName] || 0;
throw new Error(
`Error: Cannot cast ${sourceType} to ${targetTypeName} (sign change). ` +
`Use bit indexing: expr[0, ${targetWidth}]`,
);
}
}
}
const expr = this.generateUnaryExpr(ctx.unaryExpression());
// Issue #632: Float-to-integer casts must clamp to avoid undefined behavior
// C-Next's default is "clamp" (saturate), so out-of-range values clamp to type limits
const sourceType = this.getUnaryExpressionType(ctx.unaryExpression());
Eif (CastValidator.requiresClampingCast(sourceType, targetTypeName)) {
return this.generateFloatToIntClampCast(
expr,
targetType,
targetTypeName,
sourceType!,
);
}
// Validate enum casts are only to unsigned types
const allowedCastTypes = ["u8", "u16", "u32", "u64"];
// Check if we're casting an enum (for validation)
// We allow casts from any expression, but could add validation here
if (
!allowedCastTypes.includes(targetTypeName) &&
!["i8", "i16", "i32", "i64", "f32", "f64", "bool"].includes(
targetTypeName,
)
) {
// It's a user type cast - allow for now (could be struct pointer, etc.)
}
// Issue #267/#644: Use C++ casts when cppMode is enabled for MISRA compliance
return this.cppHelper!.cast(targetType, expr);
}
/**
* Issue #632: Generate clamping cast for float-to-integer conversions
* In C, casting an out-of-range float to an integer is undefined behavior.
* C-Next's default overflow behavior is "clamp" (saturate), so we generate
* explicit bounds checks to ensure safe, deterministic results.
*
* @param expr The C expression for the float value
* @param targetType The C type name (e.g., "uint8_t")
* @param targetTypeName The C-Next type name (e.g., "u8")
* @param sourceType The source float type (e.g., "f32")
* @returns A clamping cast expression
*/
private generateFloatToIntClampCast(
expr: string,
targetType: string,
targetTypeName: string,
sourceType: string,
): string {
const maxValue = TYPE_LIMITS.TYPE_MAX[targetTypeName];
const minValue = TYPE_LIMITS.TYPE_MIN[targetTypeName];
Iif (!maxValue) {
// Unknown type, fall back to raw cast - Issue #644
return this.cppHelper!.cast(targetType, expr);
}
// Mark that we need limits.h for the type limit macros
this.requireInclude("limits");
// Use appropriate float suffix and type for comparisons
const floatSuffix = sourceType === "f32" ? "f" : "";
const floatCastType = sourceType === "f32" ? "float" : "double";
// For unsigned types, minValue is "0", for signed it's a macro like INT8_MIN
const minComparison =
minValue === "0"
? `0.0${floatSuffix}`
: `((${floatCastType})${minValue})`;
const maxComparison = `((${floatCastType})${maxValue})`;
// Generate clamping expression:
// (expr > MAX) ? MAX : (expr < MIN) ? MIN : (type)(expr)
// Note: For unsigned targets, MIN is 0 so we check < 0.0
const finalCast = this.cppHelper!.cast(targetType, `(${expr})`);
return `((${expr}) > ${maxComparison} ? ${maxValue} : (${expr}) < ${minComparison} ? ${minValue} : ${finalCast})`;
}
/**
* ADR-023: Generate sizeof expression
* Delegates to SizeofResolver which uses CodeGenState.
*/
private generateSizeofExpr(ctx: Parser.SizeofExpressionContext): string {
return SizeofResolver.generate(ctx, {
generateType: (typeCtx) => this.generateType(typeCtx),
generateExpression: (exprCtx) => this.generateExpression(exprCtx),
hasSideEffects: (exprCtx) => this.hasSideEffects(exprCtx),
});
}
/**
* ADR-023: Check if expression has side effects (E0602)
* Side effects include: assignments, function calls
*/
private hasSideEffects(expr: Parser.ExpressionContext): boolean {
const text = expr.getText();
// Check for assignment operators
Iif (text.includes("<-")) return true;
Iif (text.includes("+<-")) return true;
Iif (text.includes("-<-")) return true;
Iif (text.includes("*<-")) return true;
Iif (text.includes("/<-")) return true;
Iif (text.includes("%<-")) return true;
Iif (text.includes("&<-")) return true;
Iif (text.includes("|<-")) return true;
Iif (text.includes("^<-")) return true;
Iif (text.includes("<<<-")) return true;
Iif (text.includes(">><-")) return true;
// Check for function calls by looking for identifier followed by (
// This is a heuristic - looking for "name(" pattern that's not a cast
Iif (/[a-zA-Z_]\w*\s*\(/.exec(text)) {
// Could be a function call - walk the tree to confirm
return this.hasPostfixFunctionCall(expr);
}
return false;
}
/**
* ADR-023: Check if expression contains a function call (postfix with argumentList)
*/
private hasPostfixFunctionCall(expr: Parser.ExpressionContext): boolean {
return ExpressionUtils.hasFunctionCall(expr);
}
// NOTE: generateMemberAccess and generateArrayAccess removed in grammar consolidation
// These methods referenced MemberAccessContext and ArrayAccessContext which no longer
// exist after unifying to assignmentTarget: IDENTIFIER postfixTargetOp*
// ========================================================================
// strlen Optimization - Cache repeated .length accesses
// Issue #644: Walker methods extracted to StringLengthCounter class
// ========================================================================
/**
* Generate temp variable declarations for string lengths that are accessed 2+ times.
* Returns the declarations as a string and populates the lengthCache.
*/
// ========================================================================
// ADR-044: Overflow Helper Functions
// ========================================================================
/**
* Generate all needed overflow helper functions
* ADR-053 A5: Delegates to HelperGenerator
*/
private generateOverflowHelpers(): string[] {
return helperGenerateOverflowHelpers(
CodeGenState.usedClampOps,
CodeGenState.debugMode,
);
}
/**
* Mark a clamp operation as used (will trigger helper generation)
*/
private markClampOpUsed(operation: string, cnxType: string): void {
// Only generate helpers for integer types (not float/bool)
Eif (TYPE_WIDTH[cnxType] && TypeCheckUtils.isInteger(cnxType)) {
CodeGenState.usedClampOps.add(`${operation}_${cnxType}`);
}
}
// ========================================================================
// Preprocessor Directive Handling (ADR-037)
// ========================================================================
/**
* Process a preprocessor directive
* ADR-053 A5: Delegates to IncludeGenerator
*/
private processPreprocessorDirective(
ctx: Parser.PreprocessorDirectiveContext,
): string | null {
return includeProcessPreprocessorDirective(ctx);
}
// ========================================================================
// Comment Handling (ADR-043)
// ADR-053 A5: Delegates to CommentUtils
// ========================================================================
/**
* Get comments that appear before a parse tree node
*/
private getLeadingComments(ctx: {
start?: { tokenIndex: number } | null;
}): IComment[] {
return commentGetLeadingComments(ctx, this.commentExtractor);
}
/**
* Format leading comments with current indentation
*/
private formatLeadingComments(comments: IComment[]): string[] {
const indent = FormatUtils.indent(CodeGenState.indentLevel);
return commentFormatLeadingComments(
comments,
this.commentFormatter,
indent,
);
}
/**
* ADR-051: Generate safe division helper functions for used integer types only
* ADR-053 A5: Delegates to HelperGenerator
*/
private generateSafeDivHelpers(): string[] {
return helperGenerateSafeDivHelpers(CodeGenState.usedSafeDivOps);
}
}
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