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nikicnikic
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Add token emulation support for asymmetric visibility modifiers
1 parent ba14437 commit 018da15

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‎lib/PhpParser/Lexer/Emulative.php‎

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Original file line numberDiff line numberDiff line change
@@ -5,6 +5,7 @@
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use PhpParser\Error;
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use PhpParser\ErrorHandler;
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use PhpParser\Lexer;
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use PhpParser\Lexer\TokenEmulator\AsymmetricVisibilityTokenEmulator;
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use PhpParser\Lexer\TokenEmulator\AttributeEmulator;
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use PhpParser\Lexer\TokenEmulator\EnumTokenEmulator;
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use PhpParser\Lexer\TokenEmulator\ExplicitOctalEmulator;
@@ -45,6 +46,7 @@ public function __construct(?PhpVersion $phpVersion = null) {
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new ExplicitOctalEmulator(),
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new ReadonlyFunctionTokenEmulator(),
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new PropertyTokenEmulator(),
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new AsymmetricVisibilityTokenEmulator(),
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];
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// Collect emulators that are relevant for the PHP version we're running

‎lib/PhpParser/Lexer/TokenEmulator/AsymmetricVisibilityTokenEmulator.php‎

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@@ -0,0 +1,93 @@
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<?php declare(strict_types=1);
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namespace PhpParser\Lexer\TokenEmulator;
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use PhpParser\PhpVersion;
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use PhpParser\Token;
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final class AsymmetricVisibilityTokenEmulator extends TokenEmulator {
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public function getPhpVersion(): PhpVersion {
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return PhpVersion::fromComponents(8, 4);
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}
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public function isEmulationNeeded(string $code): bool {
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$code = strtolower($code);
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return strpos($code, 'public(set)') !== false ||
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strpos($code, 'protected(set)') !== false ||
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strpos($code, 'private(set)') !== false;
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}
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public function emulate(string $code, array $tokens): array {
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$map = [
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\T_PUBLIC => \T_PUBLIC_SET,
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\T_PROTECTED => \T_PROTECTED_SET,
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\T_PRIVATE => \T_PRIVATE_SET,
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];
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for ($i = 0, $c = count($tokens); $i < $c; ++$i) {
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$token = $tokens[$i];
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if (isset($map[$token->id]) && $i + 3 < $c && $tokens[$i + 1]->text === '(' &&
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$tokens[$i + 2]->id === \T_STRING && \strtolower($tokens[$i + 2]->text) === 'set' &&
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$tokens[$i + 3]->text === ')' &&
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$this->isKeywordContext($tokens, $i)
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) {
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array_splice($tokens, $i, 4, [
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new Token(
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$map[$token->id], $token->text . '(' . $tokens[$i + 2]->text . ')',
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$token->line, $token->pos),
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]);
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$c -= 3;
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}
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}
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return $tokens;
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}
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public function reverseEmulate(string $code, array $tokens): array {
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$reverseMap = [
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\T_PUBLIC_SET => \T_PUBLIC,
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\T_PROTECTED_SET => \T_PROTECTED,
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\T_PRIVATE_SET => \T_PRIVATE,
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];
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for ($i = 0, $c = count($tokens); $i < $c; ++$i) {
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$token = $tokens[$i];
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if (isset($reverseMap[$token->id]) &&
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\preg_match('/(public|protected|private)\((set)\)/i', $token->text, $matches)
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) {
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[, $modifier, $set] = $matches;
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$modifierLen = \strlen($modifier);
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array_splice($tokens, $i, 1, [
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new Token($reverseMap[$token->id], $modifier, $token->line, $token->pos),
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new Token(\ord('('), '(', $token->line, $token->pos + $modifierLen),
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new Token(\T_STRING, $set, $token->line, $token->pos + $modifierLen + 1),
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new Token(\ord(')'), ')', $token->line, $token->pos + $modifierLen + 4),
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]);
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$i += 3;
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$c += 3;
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}
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}
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return $tokens;
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}
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/** @param Token[] $tokens */
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protected function isKeywordContext(array $tokens, int $pos): bool {
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$prevToken = $this->getPreviousNonSpaceToken($tokens, $pos);
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if ($prevToken === null) {
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return false;
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}
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return $prevToken->id !== \T_OBJECT_OPERATOR
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&& $prevToken->id !== \T_NULLSAFE_OBJECT_OPERATOR;
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}
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/** @param Token[] $tokens */
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private function getPreviousNonSpaceToken(array $tokens, int $start): ?Token {
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for ($i = $start - 1; $i >= 0; --$i) {
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if ($tokens[$i]->id === T_WHITESPACE) {
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continue;
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}
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return $tokens[$i];
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}
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return null;
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}
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}

‎lib/PhpParser/compatibility_tokens.php‎

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@@ -19,6 +19,9 @@ function defineCompatibilityTokens(): void {
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'T_READONLY',
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// PHP 8.4
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'T_PROPERTY_C',
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'T_PUBLIC_SET',
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'T_PROTECTED_SET',
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'T_PRIVATE_SET',
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];
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// PHP-Parser might be used together with another library that also emulates some or all

‎phpstan-baseline.neon‎

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Original file line numberDiff line numberDiff line change
@@ -90,6 +90,21 @@ parameters:
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count: 1
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path: lib/PhpParser/Lexer/Emulative.php
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-
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message: "#^Constant T_PRIVATE_SET not found\\.$#"
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count: 2
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path: lib/PhpParser/Lexer/TokenEmulator/AsymmetricVisibilityTokenEmulator.php
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-
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message: "#^Constant T_PROTECTED_SET not found\\.$#"
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count: 2
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path: lib/PhpParser/Lexer/TokenEmulator/AsymmetricVisibilityTokenEmulator.php
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-
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message: "#^Constant T_PUBLIC_SET not found\\.$#"
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count: 2
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path: lib/PhpParser/Lexer/TokenEmulator/AsymmetricVisibilityTokenEmulator.php
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-
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message: "#^Constant T_PROPERTY_C not found\\.$#"
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count: 1

‎test/PhpParser/Lexer/EmulativeTest.php‎

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Original file line numberDiff line numberDiff line change
@@ -393,6 +393,37 @@ public static function provideTestLexNewFeatures() {
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[\T_READONLY, 'readonly'],
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[ord('('), '('],
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]],
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// PHP 8.4: Asymmetric visibility modifiers
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['private(set)', [
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[\T_PRIVATE_SET, 'private(set)']
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]],
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['PROTECTED(SET)', [
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[\T_PROTECTED_SET, 'PROTECTED(SET)']
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]],
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['Public(Set)', [
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[\T_PUBLIC_SET, 'Public(Set)']
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]],
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['public (set)', [
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[\T_PUBLIC, 'public'],
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[\ord('('), '('],
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[\T_STRING, 'set'],
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[\ord(')'), ')'],
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]],
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['->public(set)', [
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[\T_OBJECT_OPERATOR, '->'],
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[\T_STRING, 'public'],
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[\ord('('), '('],
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[\T_STRING, 'set'],
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[\ord(')'), ')'],
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]],
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['?-> public(set)', [
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[\T_NULLSAFE_OBJECT_OPERATOR, '?->'],
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[\T_STRING, 'public'],
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[\ord('('), '('],
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[\T_STRING, 'set'],
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[\ord(')'), ')'],
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]],
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];
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}
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@@ -431,6 +462,15 @@ public static function provideTestTargetVersion() {
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['8.3', '__PROPERTY__', [[\T_STRING, '__PROPERTY__']]],
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['8.4', '__property__', [[\T_PROPERTY_C, '__property__']]],
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['8.3', '__property__', [[\T_STRING, '__property__']]],
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['8.4', 'public(set)', [
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[\T_PUBLIC_SET, 'public(set)'],
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]],
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['8.3', 'public(set)', [
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[\T_PUBLIC, 'public'],
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[\ord('('), '('],
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[\T_STRING, 'set'],
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[\ord(')'), ')']
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]],
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];
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}
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}

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