lib/parsers/asm-parser-beebasm.ts

import {ParsedAsmResult, ParsedAsmResultLine} from '../../types/asmresult/asmresult.interfaces';
import {ParseFiltersAndOutputOptions} from '../../types/features/filters.interfaces';
import {assert} from '../assert';
import {PropertyGetter} from '../properties.interfaces';
import * as utils from '../utils';

import {AsmParser} from './asm-parser';

export class AsmParserBeebAsm extends AsmParser {
    constructor(compilerProps: PropertyGetter) {
        super(compilerProps);

        this.labelDef = /^(\.\w+)/i;
        this.asmOpcodeRe = /^\s*(?<address>[\dA-F]+)\s*(?<opcodes>([\dA-F]{2} ?)+)\s*(?<disasm>.*)/;
    }

    override processAsm(asm: string, filters: ParseFiltersAndOutputOptions): ParsedAsmResult {
        const startTime = process.hrtime.bigint();

        const asmLines: ParsedAsmResultLine[] = [];
        const labelDefinitions: Record<string, number> = {};

        let startingLineCount = 0;

        utils.eachLine(asm, line => {
            startingLineCount++;

            const labelMatch = line.match(this.labelDef);
            if (labelMatch) {
                asmLines.push({
                    text: line,
                });
                labelDefinitions[labelMatch[1]] = asmLines.length;
                return;
            }

            const addressAndInstructionMatch = line.match(this.asmOpcodeRe);
            if (addressAndInstructionMatch) {
                assert(addressAndInstructionMatch.groups);
                const opcodes = (addressAndInstructionMatch.groups.opcodes || '').split(' ').filter(x => !!x);
                const address = parseInt(addressAndInstructionMatch.groups.address, 16);
                asmLines.push({
                    address: address,
                    opcodes: opcodes,
                    text: '  ' + addressAndInstructionMatch.groups.disasm,
                });
            }
        });

        const endTime = process.hrtime.bigint();

        return {
            asm: asmLines,
            labelDefinitions: labelDefinitions,
            parsingTime: ((endTime - startTime) / BigInt(1000000)).toString(),
            filteredCount: startingLineCount - asm.length,
        };
    }
}