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https://github.com/danog/PHP-Parser.git
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Canonicalize to PHP 8 comment token format
The trailing newline is no longer part of the comment token.
This commit is contained in:
Nikita Popov
parent
b58b19ed1d
commit
4abc531213
@ -89,7 +89,7 @@ class Lexer
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error_clear_last();
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$this->tokens = @token_get_all($code);
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$this->handleErrors($errorHandler);
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$this->postprocessTokens($errorHandler);
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if (false !== $scream) {
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ini_set('xdebug.scream', $scream);
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@ -131,40 +131,14 @@ class Lexer
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&& substr($token[1], -2) !== '*/';
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}
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/**
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* Check whether an error *may* have occurred during tokenization.
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*
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* @return bool
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*/
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private function errorMayHaveOccurred() : bool {
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if (defined('HHVM_VERSION')) {
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// In HHVM token_get_all() does not throw warnings, so we need to conservatively
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// assume that an error occurred
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return true;
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}
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if (PHP_VERSION_ID >= 80000) {
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// PHP 8 converts the "bad character" case into a parse error, rather than treating
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// it as a lexing warning. To preserve previous behavior, we need to assume that an
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// error occurred.
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// TODO: We should handle this the same way as PHP 8: Only generate T_BAD_CHARACTER
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// token here (for older PHP versions) and leave generationg of the actual parse error
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// to the parser. This will also save the full token scan on PHP 8 here.
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return true;
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}
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return null !== error_get_last();
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}
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protected function handleErrors(ErrorHandler $errorHandler) {
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if (!$this->errorMayHaveOccurred()) {
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return;
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}
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protected function postprocessTokens(ErrorHandler $errorHandler) {
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// PHP's error handling for token_get_all() is rather bad, so if we want detailed
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// error information we need to compute it ourselves. Invalid character errors are
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// detected by finding "gaps" in the token array. Unterminated comments are detected
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// by checking if a trailing comment has a "*/" at the end.
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//
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// Additionally, we canonicalize to the PHP 8 comment format here, which does not include
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// the trailing whitespace anymore
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$filePos = 0;
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$line = 1;
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@ -178,6 +152,23 @@ class Lexer
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$this->handleInvalidCharacterRange($filePos, $filePos + 1, $line, $errorHandler);
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}
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if ($token[0] === \T_COMMENT && preg_match('/(\r\n|\n|\r)$/D', $token[1], $matches)) {
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$trailingNewline = $matches[0];
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$token[1] = substr($token[1], 0, -strlen($trailingNewline));
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$this->tokens[$i] = $token;
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if (isset($this->tokens[$i + 1]) && $this->tokens[$i + 1][0] === \T_WHITESPACE) {
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// Move trailing newline into following T_WHITESPACE token, if it already exists.
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$this->tokens[$i + 1][1] = $trailingNewline . $this->tokens[$i + 1][1];
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$this->tokens[$i + 1][2]--;
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} else {
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// Otherwise, we need to create a new T_WHITESPACE token.
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array_splice($this->tokens, $i + 1, 0, [
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[\T_WHITESPACE, $trailingNewline, $line],
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]);
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$numTokens++;
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}
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}
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$tokenValue = \is_string($token) ? $token : $token[1];
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$tokenLen = \strlen($tokenValue);
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@ -124,12 +124,12 @@ class LexerTest extends \PHPUnit\Framework\TestCase
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'comments' => [
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new Comment('/* comment */',
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1, 6, 1, 1, 18, 1),
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new Comment('// comment' . "\n",
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1, 20, 3, 2, 30, 3),
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new Comment('// comment',
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1, 20, 3, 1, 29, 3),
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new Comment\Doc('/** docComment 1 */',
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2, 31, 4, 2, 49, 4),
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2, 31, 5, 2, 49, 5),
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new Comment\Doc('/** docComment 2 */',
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2, 50, 5, 2, 68, 5),
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2, 50, 6, 2, 68, 6),
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],
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],
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['endLine' => 2]
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@ -185,11 +185,11 @@ class LexerTest extends \PHPUnit\Framework\TestCase
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],
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[
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Tokens::T_CONSTANT_ENCAPSED_STRING, '"b"',
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['startTokenPos' => 5], ['endTokenPos' => 5]
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['startTokenPos' => 6], ['endTokenPos' => 6]
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],
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[
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ord(';'), ';',
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['startTokenPos' => 6], ['endTokenPos' => 6]
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['startTokenPos' => 7], ['endTokenPos' => 7]
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],
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]
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],
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@ -251,14 +251,17 @@ class LexerTest extends \PHPUnit\Framework\TestCase
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}
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public function testGetTokens() {
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$code = '<?php "a";' . "\n" . '// foo' . "\n" . '"b";';
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$code = '<?php "a";' . "\n" . '// foo' . "\n" . '// bar' . "\n\n" . '"b";';
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$expectedTokens = [
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[T_OPEN_TAG, '<?php ', 1],
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[T_CONSTANT_ENCAPSED_STRING, '"a"', 1],
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';',
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[T_WHITESPACE, "\n", 1],
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[T_COMMENT, '// foo' . "\n", 2],
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[T_CONSTANT_ENCAPSED_STRING, '"b"', 3],
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[T_COMMENT, '// foo', 2],
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[T_WHITESPACE, "\n", 2],
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[T_COMMENT, '// bar', 3],
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[T_WHITESPACE, "\n\n", 3],
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[T_CONSTANT_ENCAPSED_STRING, '"b"', 5],
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';',
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];
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@ -307,12 +307,12 @@ PHP;
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"comments": [
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{
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"nodeType": "Comment",
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"text": "\/\/ comment\n",
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"text": "\/\/ comment",
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"line": 2,
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"filePos": 6,
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"tokenPos": 1,
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"endLine": 3,
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"endFilePos": 16,
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"endLine": 2,
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"endFilePos": 15,
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"endTokenPos": 1
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},
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{
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@ -320,10 +320,10 @@ PHP;
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"text": "\/** doc comment *\/",
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"line": 3,
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"filePos": 17,
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"tokenPos": 2,
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"tokenPos": 3,
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"endLine": 3,
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"endFilePos": 34,
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"endTokenPos": 2
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"endTokenPos": 3
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}
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],
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"endLine": 6
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@ -83,10 +83,10 @@ EOC;
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$this->assertInstanceOf(Stmt\Echo_::class, $echo);
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$this->assertEquals([
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'comments' => [
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new Comment("// Line\n",
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4, 49, 12, 5, 56, 12),
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new Comment("// Comments\n",
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5, 61, 14, 6, 72, 14),
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new Comment("// Line",
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4, 49, 12, 4, 55, 12),
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new Comment("// Comments",
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5, 61, 14, 5, 71, 14),
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],
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'startLine' => 6,
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'endLine' => 6,
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@ -15,8 +15,8 @@ class Foo {
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public function __construct()
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{
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// I'm just a comment
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$foo; }
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$foo;
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}
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}
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-----
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<?php
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@ -72,5 +72,6 @@ class Foo {
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public function __construct()
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{
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// I'm a new comment
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}
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}
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}
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