All files / transpiler/logic/analysis/types GrammarCoverageReportBuilder.ts

100% Statements 15/15
100% Branches 6/6
100% Functions 3/3
100% Lines 15/15

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                                        6x 6x 6x 6x   6x 15x   6x 15x       6x   6x 6x 6x   6x   6x                               1x        
/**
 * Builder for IGrammarCoverageReport
 * Shared between GrammarCoverageListener and scripts/grammar-coverage.ts
 */
 
import IGrammarCoverageReport from "./IGrammarCoverageReport";
 
interface IBuildReportInput {
  parserRuleNames: string[];
  lexerRuleNames: string[];
  parserRuleVisits: Map<string, number>;
  lexerRuleVisits: Map<string, number>;
}
 
/**
 * Build a grammar coverage report from raw visit data
 */
function buildGrammarCoverageReport(
  input: IBuildReportInput,
): IGrammarCoverageReport {
  const totalParserRules = input.parserRuleNames.length;
  const totalLexerRules = input.lexerRuleNames.length;
  const visitedParserRules = input.parserRuleVisits.size;
  const visitedLexerRules = input.lexerRuleVisits.size;
 
  const neverVisitedParserRules = input.parserRuleNames.filter(
    (name) => !input.parserRuleVisits.has(name),
  );
  const neverVisitedLexerRules = input.lexerRuleNames.filter(
    (name) => !input.lexerRuleVisits.has(name),
  );
 
  const parserCoveragePercentage =
    totalParserRules > 0 ? (visitedParserRules / totalParserRules) * 100 : 0;
  const lexerCoveragePercentage =
    totalLexerRules > 0 ? (visitedLexerRules / totalLexerRules) * 100 : 0;
  const combinedTotal = totalParserRules + totalLexerRules;
  const combinedVisited = visitedParserRules + visitedLexerRules;
  const combinedCoveragePercentage =
    combinedTotal > 0 ? (combinedVisited / combinedTotal) * 100 : 0;
 
  return {
    totalParserRules,
    totalLexerRules,
    visitedParserRules,
    visitedLexerRules,
    neverVisitedParserRules,
    neverVisitedLexerRules,
    parserRuleVisits: new Map(input.parserRuleVisits),
    lexerRuleVisits: new Map(input.lexerRuleVisits),
    parserCoveragePercentage,
    lexerCoveragePercentage,
    combinedCoveragePercentage,
  };
}
 
class GrammarCoverageReportBuilder {
  static readonly build = buildGrammarCoverageReport;
}
 
export default GrammarCoverageReportBuilder;