startup

gistfile1.txt

export function parseSource(source: string, options: Options | void, context: Context): ESTree.Program {
  if (options != null) {
    if (options.module) context |= Context.Module | Context.Strict;
    if (options.next) context |= Context.OptionsNext;
    if (options.loc) context |= Context.OptionsLoc;
    if (options.disableWebCompat) context |= Context.OptionsDisableWebCompat;
    if (options.directives) context |= Context.OptionsDirectives | Context.OptionsRaw;
    if (options.raw) context |= Context.OptionsRaw;
    if (options.impliedStrict) context |= Context.Strict;
  }

  const parser = create(source);

  skipHashBang(parser, source);

  nextToken(parser, context, /* allowRegExp */ 1);

  if (context & Context.Module) {
    const body = parseModuleItemListAndDirectives(parser, context | Context.InGlobal, {
      parent: void 0,
      type: ScopeKind.Block
    });

    return context & Context.OptionsLoc
      ? {
          type: 'Program',
          sourceType: 'module',
          body,
          start: 0,
          end: source.length,
          loc: {
            start: {
              line: 1,
              column: 0
            },
            end: {
              line: parser.lineBase,
              column: parser.index - parser.offset
            }
          }
        }
      : {
          type: 'Program',
          sourceType: 'module',
          body
        };
  }

  const body = parseStatementList(parser, context | Context.InGlobal, {
    parent: void 0,
    type: ScopeKind.Block
  });

  return context & Context.OptionsLoc
    ? {
        type: 'Program',
        sourceType: 'script',
        body,
        start: 0,
        end: source.length,
        loc: {
          start: {
            line: 1,
            column: 0
          },
          end: {
            line: parser.lineBase,
            column: parser.index - parser.offset
          }
        }
      }
    : {
        type: 'Program',
        sourceType: 'script',
        body
      };
}