Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | 26x 26x 26x 26x 26x 26x 26x 26x 26x 122x 122x 122x 122x 122x 26x 2x 24x | /**
* BitmapCollector - Extracts bitmap type declarations from parse trees.
* ADR-034: Bitmaps provide named access to bit regions within an integer backing type.
*/
import * as Parser from "../../../parser/grammar/CNextParser";
import ESourceLanguage from "../../../../../utils/types/ESourceLanguage";
import ESymbolKind from "../../../../../utils/types/ESymbolKind";
import IBitmapSymbol from "../../types/IBitmapSymbol";
import IBitmapFieldInfo from "../../types/IBitmapFieldInfo";
import BITMAP_SIZE from "../../../../types/BITMAP_SIZE";
import BITMAP_BACKING_TYPE from "../../../../types/BITMAP_BACKING_TYPE";
class BitmapCollector {
/**
* Collect a bitmap declaration and return an IBitmapSymbol.
*
* @param ctx The bitmap declaration context
* @param sourceFile Source file path
* @param scopeName Optional scope name for nested bitmaps
* @returns The bitmap symbol
* @throws Error if total bits don't match bitmap size
*/
static collect(
ctx: Parser.BitmapDeclarationContext,
sourceFile: string,
scopeName?: string,
): IBitmapSymbol {
const name = ctx.IDENTIFIER().getText();
const fullName = scopeName ? `${scopeName}_${name}` : name;
const bitmapType = ctx.bitmapType().getText();
const expectedBits = BITMAP_SIZE[bitmapType];
const backingType = BITMAP_BACKING_TYPE[bitmapType];
const line = ctx.start?.line ?? 0;
// Collect fields with running bit offset
const fields = new Map<string, IBitmapFieldInfo>();
let totalBits = 0;
for (const member of ctx.bitmapMember()) {
const fieldName = member.IDENTIFIER().getText();
const widthLiteral = member.INTEGER_LITERAL();
const width = widthLiteral
? Number.parseInt(widthLiteral.getText(), 10)
: 1;
fields.set(fieldName, { offset: totalBits, width });
totalBits += width;
}
// Validate total bits equals bitmap size
if (totalBits !== expectedBits) {
throw new Error(
`Error: Bitmap '${fullName}' has ${totalBits} bits but ${bitmapType} requires exactly ${expectedBits} bits`,
);
}
return {
name: fullName,
parent: scopeName,
sourceFile,
sourceLine: line,
sourceLanguage: ESourceLanguage.CNext,
isExported: true,
kind: ESymbolKind.Bitmap,
backingType,
bitWidth: expectedBits,
fields,
};
}
}
export default BitmapCollector;
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