Function parseBlock

src/runtime/parser.ts:1371–1434

(block, blockId, offset = 0, spans = [], extraInfo = {})

let eveParser = new Parser([]);

export function parseBlock(block, blockId, offset = 0, spans = [], extraInfo = {}) {
  let start = time();
  let lex: any = EveBlockLexer.tokenize(block);
  let token: any;
  let tokenIx = 0;
  for(token of lex.tokens) {
    let tokenId = `${blockId}|token|${tokenIx++}`;
    token.id = tokenId;
    token.startOffset += offset;
    spans.push(token.startOffset, token.startOffset + token.image.length, token.label, tokenId);
  }
  for(token of lex.groups.comments) {
    let tokenId = `${blockId}|token|${tokenIx++}`;
    token.id = tokenId;
    token.startOffset += offset;
    spans.push(token.startOffset, token.startOffset + token.image.length, token.label, tokenId);
  }
  eveParser.input = lex.tokens;
  let results;
  try {
    // The parameters here are a strange quirk of how Chevrotain works, I believe the
    // 1 tells chevrotain what level the rule is starting at, we then pass our params
    // to the codeBlock parser function as an array
    results = eveParser.codeBlock(1, [blockId]);
  } catch(e) {
    console.error("The parser threw an error: " + e);
  }
  if(results) {
    results.start = offset;
    results.startOffset = offset;
    results.tokens = lex.tokens;
    for(let scan of results.scanLike) {
      let type = "scan-boundary";
      if(scan.type === "record") {
        type = "record-boundary";
      }
      spans.push(scan.startOffset, scan.endOffset, type, scan.id);
    }
    for(let action of results.binds) {
      let type = "action-boundary";
      if(action.type === "record") {
        type = "action-record-boundary";
      }
      spans.push(action.startOffset, action.endOffset, type, action.id);
      extraInfo[action.id] = {kind: "bind"};
    }
    for(let action of results.commits) {
      let type = "action-boundary";
      if(action.type === "record") {
        type = "action-record-boundary";
      }
      spans.push(action.startOffset, action.endOffset, type, action.id);
      extraInfo[action.id] = {kind: "commits"};
    }
  }
  let errors = parserErrors(eveParser.errors, {blockId, blockStart: offset, spans, extraInfo, tokens: lex.tokens});
  lex.groups.comments.length = 0;
  return {