/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
'use strict';

function evalStringConcat(ast) {
 switch (ast.type) {
 case 'StringLiteral':
 case 'Literal': // ESLint
 return ast.value;
 case 'BinaryExpression': // `+`
 if (ast.operator !== '+') {
 throw new Error('Unsupported binary operator ' + ast.operator);
 }
 return evalStringConcat(ast.left) + evalStringConcat(ast.right);
 default:
 throw new Error('Unsupported type ' + ast.type);
 }
}
exports.evalStringConcat = evalStringConcat;

function evalStringAndTemplateConcat(ast, args) {
 switch (ast.type) {
 case 'StringLiteral':
 return ast.value;
 case 'BinaryExpression': // `+`
 if (ast.operator !== '+') {
 throw new Error('Unsupported binary operator ' + ast.operator);
 }
 return (
 evalStringAndTemplateConcat(ast.left, args) +
 evalStringAndTemplateConcat(ast.right, args)
 );
 case 'TemplateLiteral': {
 let elements = [];
 for (let i = 0; i < ast.quasis.length; i++) {
 const elementNode = ast.quasis[i];
 if (elementNode.type !== 'TemplateElement') {
 throw new Error('Unsupported type ' + ast.type);
 }
 elements.push(elementNode.value.cooked);
 }
 args.push(...ast.expressions);
 return elements.join('%s');
 }
 default:
 // Anything that's not a string is interpreted as an argument.
 args.push(ast);
 return '%s';
 }
}
exports.evalStringAndTemplateConcat = evalStringAndTemplateConcat;