98 lines
2.4 KiB
PHP
98 lines
2.4 KiB
PHP
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<?php
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/*
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* This file is part of Psy Shell.
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*
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* (c) 2012-2018 Justin Hileman
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Psy\Test;
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use PhpParser\PrettyPrinter\Standard as Printer;
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use Psy\Exception\ParseErrorException;
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use Psy\ParserFactory;
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class ParserTestCase extends \PHPUnit\Framework\TestCase
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{
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protected $traverser;
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private $parser;
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private $printer;
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public function tearDown()
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{
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$this->traverser = null;
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$this->parser = null;
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$this->printer = null;
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}
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protected function parse($code, $prefix = '<?php ')
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{
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$code = $prefix . $code;
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try {
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return $this->getParser()->parse($code);
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} catch (\PhpParser\Error $e) {
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if (!$this->parseErrorIsEOF($e)) {
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throw ParseErrorException::fromParseError($e);
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}
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try {
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// Unexpected EOF, try again with an implicit semicolon
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return $this->getParser()->parse($code . ';');
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} catch (\PhpParser\Error $e) {
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return false;
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}
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}
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}
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protected function traverse(array $stmts)
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{
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if (!isset($this->traverser)) {
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throw new \RuntimeException('Test cases must provide a traverser');
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}
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return $this->traverser->traverse($stmts);
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}
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protected function prettyPrint(array $stmts)
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{
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return $this->getPrinter()->prettyPrint($stmts);
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}
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protected function assertProcessesAs($from, $to)
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{
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$stmts = $this->parse($from);
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$stmts = $this->traverse($stmts);
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$toStmts = $this->parse($to);
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$this->assertSame($this->prettyPrint($toStmts), $this->prettyPrint($stmts));
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}
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private function getParser()
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{
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if (!isset($this->parser)) {
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$parserFactory = new ParserFactory();
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$this->parser = $parserFactory->createParser();
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}
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return $this->parser;
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}
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private function getPrinter()
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{
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if (!isset($this->printer)) {
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$this->printer = new Printer();
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}
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return $this->printer;
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}
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private function parseErrorIsEOF(\PhpParser\Error $e)
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{
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$msg = $e->getRawMessage();
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return ($msg === 'Unexpected token EOF') || (\strpos($msg, 'Syntax error, unexpected EOF') !== false);
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}
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}
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