idThings()

in lib/parser.js [1355:1454]

• 87 lines of code
• 7 McCabe index (conditional complexity)

  idThings() {
    var id = this.look;
    this.matchID();

    // id++
    if (this.is(Tag.INCREMENT)) {
      this.move();
      return {
        type: 'increment',
        position: 'backend',
        expr: {
          type: 'variable',
          id: id,
          loc: id.loc
        },
        loc: {
          start: id.loc.start,
          end: this.look.loc.end
        }
      };
    }

    // id--
    if (this.is(Tag.DECREMENT)) {
      this.move();
      return {
        type: 'decrement',
        position: 'backend',
        expr: {
          type: 'variable',
          id: id,
          loc: id.loc
        },
        loc: {
          start: id.loc.start,
          end: this.look.loc.end
        }
      };
    }

    // id = xxx
    if (this.look.tag === '=') {
      this.move();
      let expr = this.expr();
      return {
        type: 'assign',
        left: {
          type: 'variable',
          id: id,
        },
        expr
      };
    }

    // id()
    if (this.look.tag === '(') {
      this.move();
      const args = this.args();
      this.match(')');
      return {
        type: 'call',
        left: {
          type: 'method_call',
          id: id
        },
        args,
        loc: {
          start: id.loc.start,
          end: this.lexer.loc()
        }
      };
    }

    if (this.look.tag === '[') {
      this.move();
      let accessKey = this.expr();
      this.match(']');
      // @id.x[]
      return this.mapAccess({
        type: 'map_access',
        id: id,
        accessKey: accessKey,
        loc: {
          start: id.loc.start,
          end: this.lexer.loc()
        }
      });
    }

    // id.x = xxx, id.x(), id.x
    if (this.look.tag === '.') {
      return this.properties(id);
    }

    return {
      type: 'variable',
      id: id,
      loc: id.loc
    };
  }