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<h1><a href="../../../index.html">All files</a> / <a href="index.html">src/artifacts/parsers</a> tree_sitter_diagnostics.ts</h1>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* Parser Diagnostics and Regression Harness
*
* Validates parser accuracy against ground truth fixtures to ensure
* tree-sitter parser handles all edge cases that regex parser missed.
*
* Design Pattern: Validator + Reporter
* - Compare extracted signals against ground truth
* - Calculate precision, recall, F1 metrics
* - Generate diagnostic reports
*
* @module tree_sitter_diagnostics
*/
import { SignalDefinition } from './gdscript_parser.js';
import { z } from 'zod';
/**
* Zod schema for ground truth signal definitions.
* Matches SignalDefinition structure but marks all fields as required.
*/
export const GroundTruthSignalSchema = <span class="cstat-no" title="statement not covered" >z.object({</span>
name: z.string().min(1),
params: z.array(z.string()),
filePath: z.string().min(1),
line: z.number().int().positive(),
source: z.string().min(1),
paramTypes: z.record(z.string(), z.string()).optional(),
});
/**
* Ground truth dataset for a single test fixture.
*/
export const GroundTruthDatasetSchema = <span class="cstat-no" title="statement not covered" >z.object({</span>
fixture: z.string().min(1),
description: z.string(),
expectedSignals: z.array(GroundTruthSignalSchema),
});
export type GroundTruthDataset = z.infer<typeof GroundTruthDatasetSchema>;
/**
* Diagnostic result for a single fixture validation.
*/
export interface FixtureDiagnostic {
/** Fixture name */
fixture: string;
/** True positives: correctly identified signals */
truePositives: number;
/** False positives: incorrectly identified signals */
falsePositives: number;
/** False negatives: missed signals */
falseNegatives: number;
/** Precision: TP / (TP + FP) */
precision: number;
/** Recall: TP / (TP + FN) */
recall: number;
/** F1 score: 2 * (precision * recall) / (precision + recall) */
f1Score: number;
/** Mismatched signals (details) */
mismatches: SignalMismatch[];
}
/**
* Signal mismatch details for debugging.
*/
export interface SignalMismatch {
type: 'false_positive' | 'false_negative' | 'incorrect_params';
signalName: string;
expected?: SignalDefinition;
actual?: SignalDefinition;
details: string;
}
/**
* Aggregate diagnostic result across all fixtures.
*/
export interface DiagnosticResult {
/** Total fixtures validated */
totalFixtures: number;
/** Per-fixture diagnostics */
fixtures: FixtureDiagnostic[];
/** Aggregate precision */
aggregatePrecision: number;
/** Aggregate recall */
aggregateRecall: number;
/** Aggregate F1 score */
aggregateF1: number;
/** Total validation time in milliseconds */
durationMs: number;
/** Overall pass/fail status */
passed: boolean;
}
/**
* Parser Diagnostics class for regression testing.
*/
export class ParserDiagnostics {
/**
* Validate extracted signals against ground truth.
*
* @param extracted - Signals extracted by parser
* @param groundTruth - Expected signals from ground truth dataset
* @returns Diagnostic result with accuracy metrics
*/
<span class="fstat-no" title="function not covered" > validate(</span>extracted: SignalDefinition[], groundTruth: GroundTruthDataset): FixtureDiagnostic {
const expected = <span class="cstat-no" title="statement not covered" >groundTruth.expectedSignals;</span>
const mismatches: SignalMismatch[] = <span class="cstat-no" title="statement not covered" >[];</span>
// Normalize signals for comparison (remove absolute paths)
const normalizeSignal = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(s</span>ig: SignalDefinition) => (<span class="cstat-no" title="statement not covered" >{</span></span>
name: sig.name,
params: sig.params.slice().sort(),
line: sig.line,
source: sig.source.trim(),
});
const expectedNorm = <span class="cstat-no" title="statement not covered" >expected.map(normalizeSignal);</span>
const extractedNorm = <span class="cstat-no" title="statement not covered" >extracted.map(normalizeSignal);</span>
// Calculate true positives (exact matches)
let truePositives = <span class="cstat-no" title="statement not covered" >0;</span>
const matchedExtracted = <span class="cstat-no" title="statement not covered" >new Set<number>();</span>
const matchedExpected = <span class="cstat-no" title="statement not covered" >new Set<number>();</span>
<span class="cstat-no" title="statement not covered" > for (let i = <span class="cstat-no" title="statement not covered" >0;</span> i < extractedNorm.length; i++) {</span>
<span class="cstat-no" title="statement not covered" > for (let j = <span class="cstat-no" title="statement not covered" >0;</span> j < expectedNorm.length; j++) {</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (matchedExpected.has(j)) <span class="cstat-no" title="statement not covered" >continue;</span></span>
const ext = <span class="cstat-no" title="statement not covered" >extractedNorm[i];</span>
const exp = <span class="cstat-no" title="statement not covered" >expectedNorm[j];</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (ext.name === exp.name && </span>
ext.line === exp.line &&
JSON.stringify(ext.params) === JSON.stringify(exp.params)) {
<span class="cstat-no" title="statement not covered" > truePositives++;</span>
<span class="cstat-no" title="statement not covered" > matchedExtracted.add(i);</span>
<span class="cstat-no" title="statement not covered" > matchedExpected.add(j);</span>
<span class="cstat-no" title="statement not covered" > break;</span>
}
}
}
// Calculate false positives (extracted but not in ground truth)
const falsePositives = <span class="cstat-no" title="statement not covered" >extractedNorm.length - truePositives;</span>
<span class="cstat-no" title="statement not covered" > for (let i = <span class="cstat-no" title="statement not covered" >0;</span> i < extracted.length; i++) {</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (!matchedExtracted.has(i)) {</span>
<span class="cstat-no" title="statement not covered" > mismatches.push({</span>
type: 'false_positive',
signalName: extracted[i].name,
actual: extracted[i],
details: `Signal "${extracted[i].name}" at line ${extracted[i].line} not in ground truth`,
});
}
}
// Calculate false negatives (in ground truth but not extracted)
const falseNegatives = <span class="cstat-no" title="statement not covered" >expectedNorm.length - truePositives;</span>
<span class="cstat-no" title="statement not covered" > for (let j = <span class="cstat-no" title="statement not covered" >0;</span> j < expected.length; j++) {</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (!matchedExpected.has(j)) {</span>
<span class="cstat-no" title="statement not covered" > mismatches.push({</span>
type: 'false_negative',
signalName: expected[j].name,
expected: expected[j],
details: `Signal "${expected[j].name}" at line ${expected[j].line} missing from extraction`,
});
}
}
// Calculate metrics
const precision = <span class="cstat-no" title="statement not covered" >truePositives + falsePositives > 0 </span>
? truePositives / (truePositives + falsePositives)
: 1.0;
const recall = <span class="cstat-no" title="statement not covered" >truePositives + falseNegatives > 0</span>
? truePositives / (truePositives + falseNegatives)
: 1.0;
const f1Score = <span class="cstat-no" title="statement not covered" >precision + recall > 0</span>
? 2 * (precision * recall) / (precision + recall)
: 0.0;
<span class="cstat-no" title="statement not covered" > return {</span>
fixture: groundTruth.fixture,
truePositives,
falsePositives,
falseNegatives,
precision,
recall,
f1Score,
mismatches,
};
}
/**
* Validate multiple fixtures and calculate aggregate metrics.
*
* @param results - Array of fixture validations
* @param durationMs - Total validation time
* @returns Aggregate diagnostic result
*/
<span class="fstat-no" title="function not covered" > aggregateDiagnostics(</span>results: FixtureDiagnostic[], durationMs: number): DiagnosticResult {
const totalTP = <span class="cstat-no" title="statement not covered" >results.reduce(<span class="fstat-no" title="function not covered" >(s</span>um, r) => <span class="cstat-no" title="statement not covered" >sum + r.truePositives,</span> 0);</span>
const totalFP = <span class="cstat-no" title="statement not covered" >results.reduce(<span class="fstat-no" title="function not covered" >(s</span>um, r) => <span class="cstat-no" title="statement not covered" >sum + r.falsePositives,</span> 0);</span>
const totalFN = <span class="cstat-no" title="statement not covered" >results.reduce(<span class="fstat-no" title="function not covered" >(s</span>um, r) => <span class="cstat-no" title="statement not covered" >sum + r.falseNegatives,</span> 0);</span>
const aggregatePrecision = <span class="cstat-no" title="statement not covered" >totalTP + totalFP > 0 </span>
? totalTP / (totalTP + totalFP)
: 1.0;
const aggregateRecall = <span class="cstat-no" title="statement not covered" >totalTP + totalFN > 0</span>
? totalTP / (totalTP + totalFN)
: 1.0;
const aggregateF1 = <span class="cstat-no" title="statement not covered" >aggregatePrecision + aggregateRecall > 0</span>
? 2 * (aggregatePrecision * aggregateRecall) / (aggregatePrecision + aggregateRecall)
: 0.0;
// Pass if all fixtures have 100% accuracy (F1 = 1.0)
const passed = <span class="cstat-no" title="statement not covered" >results.every(<span class="fstat-no" title="function not covered" >r </span>=> <span class="cstat-no" title="statement not covered" >r.f1Score === 1.0)</span>;</span>
<span class="cstat-no" title="statement not covered" > return {</span>
totalFixtures: results.length,
fixtures: results,
aggregatePrecision,
aggregateRecall,
aggregateF1,
durationMs,
passed,
};
}
/**
* Format diagnostic result as human-readable report.
*
* @param result - Diagnostic result to format
* @returns Markdown-formatted diagnostic report
*/
<span class="fstat-no" title="function not covered" > formatDiagnostics(</span>result: DiagnosticResult): string {
const lines: string[] = <span class="cstat-no" title="statement not covered" >[];</span>
<span class="cstat-no" title="statement not covered" > lines.push('# Parser Regression Diagnostic Report\n');</span>
<span class="cstat-no" title="statement not covered" > lines.push(`**Generated**: ${new Date().toISOString()}\n`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`**Total Fixtures**: ${result.totalFixtures}`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`**Validation Time**: ${result.durationMs.toFixed(2)}ms\n`);</span>
<span class="cstat-no" title="statement not covered" > lines.push('## Aggregate Metrics\n');</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **Precision**: ${(result.aggregatePrecision * 100).toFixed(2)}%`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **Recall**: ${(result.aggregateRecall * 100).toFixed(2)}%`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **F1 Score**: ${(result.aggregateF1 * 100).toFixed(2)}%`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **Status**: ${result.passed ? '✅ PASSED' : '❌ FAILED'}\n`);</span>
<span class="cstat-no" title="statement not covered" > lines.push('## Per-Fixture Results\n');</span>
<span class="cstat-no" title="statement not covered" > for (const fixture of result.fixtures) {</span>
const status = <span class="cstat-no" title="statement not covered" >fixture.f1Score === 1.0 ? '✅' : '❌';</span>
<span class="cstat-no" title="statement not covered" > lines.push(`### ${status} ${fixture.fixture}\n`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **True Positives**: ${fixture.truePositives}`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **False Positives**: ${fixture.falsePositives}`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **False Negatives**: ${fixture.falseNegatives}`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **Precision**: ${(fixture.precision * 100).toFixed(2)}%`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **Recall**: ${(fixture.recall * 100).toFixed(2)}%`);</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **F1 Score**: ${(fixture.f1Score * 100).toFixed(2)}%\n`);</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (fixture.mismatches.length > 0) {</span>
<span class="cstat-no" title="statement not covered" > lines.push('**Mismatches**:\n');</span>
<span class="cstat-no" title="statement not covered" > for (const mismatch of fixture.mismatches) {</span>
<span class="cstat-no" title="statement not covered" > lines.push(`- **${mismatch.type}**: ${mismatch.details}`);</span>
}
<span class="cstat-no" title="statement not covered" > lines.push('');</span>
}
}
<span class="cstat-no" title="statement not covered" > return lines.join('\n');</span>
}
}
</pre></td></tr></table></pre>
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