Method astBinaryExpression

src/backend/web-gl/function-node.js:254–434

* @desc Parses the abstract syntax tree for *binary* expression * @param {Object} ast - the AST object to parse * @param {Array} retArr - return array string * @returns {Array} the append retArr

(ast, retArr)

   * @returns {Array} the append retArr
   */
  astBinaryExpression(ast, retArr) {
    if (this.checkAndUpconvertOperator(ast, retArr)) {
      return retArr;
    }

    if (this.fixIntegerDivisionAccuracy && ast.operator === '/') {
      retArr.push('divWithIntCheck(');
      this.pushState('building-float');
      switch (this.getType(ast.left)) {
        case 'Integer':
          this.castValueToFloat(ast.left, retArr);
          break;
        case 'LiteralInteger':
          this.castLiteralToFloat(ast.left, retArr);
          break;
        default:
          this.astGeneric(ast.left, retArr);
      }
      retArr.push(', ');
      switch (this.getType(ast.right)) {
        case 'Integer':
          this.castValueToFloat(ast.right, retArr);
          break;
        case 'LiteralInteger':
          this.castLiteralToFloat(ast.right, retArr);
          break;
        default:
          this.astGeneric(ast.right, retArr);
      }
      this.popState('building-float');
      retArr.push(')');
      return retArr;
    }

    retArr.push('(');
    const leftType = this.getType(ast.left) || 'Number';
    const rightType = this.getType(ast.right) || 'Number';
    if (!leftType || !rightType) {
      throw this.astErrorOutput(`Unhandled binary expression`, ast);
    }
    const key = leftType + ' & ' + rightType;
    switch (key) {
      case 'Integer & Integer':
        this.pushState('building-integer');
        this.astGeneric(ast.left, retArr);
        retArr.push(operatorMap[ast.operator] || ast.operator);
        this.astGeneric(ast.right, retArr);
        this.popState('building-integer');
        break;
      case 'Number & Float':
      case 'Float & Number':
      case 'Float & Float':
      case 'Number & Number':
        this.pushState('building-float');
        this.astGeneric(ast.left, retArr);
        retArr.push(operatorMap[ast.operator] || ast.operator);
        this.astGeneric(ast.right, retArr);
        this.popState('building-float');