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* Include directive and preprocessor handling.
* Extracted from CodeGenerator.ts as part of ADR-053 A5.
*/
import * as path from "node:path";
import * as Parser from "../../../../logic/parser/grammar/CNextParser";
import CnxFileResolver from "../../../../data/CnxFileResolver";
/**
* Issue #349: Options for include transformation
*/
interface IIncludeTransformOptions {
sourcePath: string | null;
includeDirs?: string[];
inputs?: string[];
}
/**
* Resolve angle-bracket include path from inputs.
* SonarCloud S3776: Extracted from transformIncludeDirective().
*/
const resolveAngleIncludePath = (
filename: string,
sourcePath: string,
includeDirs: string[],
inputs: string[],
): string | null => {
if (inputs.length === 0) {
return null;
}
const sourceDir = path.dirname(sourcePath);
const searchPaths = [sourceDir, ...includeDirs];
const foundPath = CnxFileResolver.findCnxFile(filename, searchPaths);
if (!foundPath) {
return null;
}
const relativePath = CnxFileResolver.getRelativePathFromInputs(
foundPath,
inputs,
);
return relativePath ? relativePath.replace(/\.cnx$/, ".h") : null;
};
/**
* Process angle-bracket includes: #include <file.cnx>
* SonarCloud S3776: Extracted from transformIncludeDirective().
*/
const transformAngleInclude = (
includeText: string,
filename: string,
options: IIncludeTransformOptions,
): string => {
const { sourcePath, includeDirs = [], inputs = [] } = options;
// Try to resolve the correct output path
if (sourcePath) {
const resolvedPath = resolveAngleIncludePath(
filename,
sourcePath,
includeDirs,
inputs,
);
if (resolvedPath) {
return includeText.replace(`<${filename}.cnx>`, `<${resolvedPath}>`);
}
}
// Fallback: simple replacement
return includeText.replace(`<${filename}.cnx>`, `<${filename}.h>`);
};
/**
* Process quote includes: #include "file.cnx"
* SonarCloud S3776: Extracted from transformIncludeDirective().
*/
const transformQuoteInclude = (
includeText: string,
filepath: string,
options: IIncludeTransformOptions,
): string => {
const { sourcePath } = options;
// Validate .cnx file exists if we have source path
if (sourcePath) {
const sourceDir = path.dirname(sourcePath);
const cnxPath = path.resolve(sourceDir, `${filepath}.cnx`);
if (!CnxFileResolver.cnxFileExists(cnxPath)) {
throw new Error(
`Error: Included C-Next file not found: ${filepath}.cnx\n` +
` Searched at: ${cnxPath}\n` +
` Referenced in: ${sourcePath}`,
);
}
}
// Transform to .h
return includeText.replace(`"${filepath}.cnx"`, `"${filepath}.h"`);
};
/**
* ADR-010: Transform #include directives, converting .cnx to .h
* Validates that .cnx files exist if sourcePath is available
* Supports both <file.cnx> and "file.cnx" forms
*
* Issue #349: For angle-bracket includes, resolves the correct output path
* by finding the .cnx file and calculating its relative path from inputs.
* SonarCloud S3776: Refactored to use helper functions.
*/
const transformIncludeDirective = (
includeText: string,
options: IIncludeTransformOptions,
): string => {
// Match: #include <file.cnx> or #include "file.cnx"
const angleMatch = /#\s*include\s*<([^>]+)\.cnx>/.exec(includeText);
if (angleMatch) {
return transformAngleInclude(includeText, angleMatch[1], options);
}
const quoteMatch = /#\s*include\s*"([^"]+)\.cnx"/.exec(includeText);
if (quoteMatch) {
return transformQuoteInclude(includeText, quoteMatch[1], options);
}
// Not a .cnx include - pass through unchanged
return includeText;
};
/**
* Extract the macro name from a #define directive
*/
const extractDefineName = (text: string): string => {
const match = /#\s*define\s+([a-zA-Z_]\w*)/.exec(text);
return match ? match[1] : "unknown";
};
/**
* Process a #define directive
* Only flag-only defines are allowed; value and function macros produce errors
*/
const processDefineDirective = (
ctx: Parser.DefineDirectiveContext,
): string | null => {
const text = ctx.getText();
// Check for function-like macro: #define NAME(
if (ctx.DEFINE_FUNCTION()) {
const name = extractDefineName(text);
const line = ctx.start?.line ?? 0;
throw new Error(
`E0501: Function-like macro '${name}' is not allowed. ` +
`Use inline functions instead. Line ${line}`,
);
}
// Check for value define: #define NAME value
if (ctx.DEFINE_WITH_VALUE()) {
const name = extractDefineName(text);
const line = ctx.start?.line ?? 0;
throw new Error(
`E0502: #define with value '${name}' is not allowed. ` +
`Use 'const' instead: const u32 ${name} <- value; Line ${line}`,
);
}
// Flag-only define: pass through
if (ctx.DEFINE_FLAG()) {
return text.trim();
}
return null;
};
/**
* Process a conditional compilation directive (#ifdef, #ifndef, #else, #endif)
* These are passed through unchanged
*/
const processConditionalDirective = (
ctx: Parser.ConditionalDirectiveContext,
): string => {
return ctx.getText().trim();
};
/**
* Process a preprocessor directive
* - Flag-only defines (#define FLAG): pass through
* - Value defines (#define FLAG value): ERROR E0502
* - Function macros (#define NAME(args)): ERROR E0501
* - Conditional directives: pass through
*/
const processPreprocessorDirective = (
ctx: Parser.PreprocessorDirectiveContext,
): string | null => {
if (ctx.defineDirective()) {
return processDefineDirective(ctx.defineDirective()!);
}
if (ctx.conditionalDirective()) {
return processConditionalDirective(ctx.conditionalDirective()!);
}
return null;
};
// Export as an object for consistent module pattern
const includeGenerators = {
transformIncludeDirective,
extractDefineName,
processDefineDirective,
processConditionalDirective,
processPreprocessorDirective,
};
export default includeGenerators;
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