8000 [Yaml] added support for parsing PHP constants · symfony/symfony@02d1dea · GitHub
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[Yaml] added support for parsing PHP constants
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‎src/Symfony/Component/Yaml/CHANGELOG.md

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@@ -1,6 +1,15 @@
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CHANGELOG
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=========
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3.2.0
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-----
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* Added support for parsing PHP constants:
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```php
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Yaml::parse('!php/const:PHP_INT_MAX', Yaml::PARSE_CONSTANT);
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```
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3.1.0
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-----
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‎src/Symfony/Component/Yaml/Inline.php

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@@ -28,6 +28,7 @@ class Inline
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private static $exceptionOnInvalidType = false;
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private static $objectSupport = false;
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private static $objectForMap = false;
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private static $constantSupport = false;
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/**
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* Converts a YAML string to a PHP array.
@@ -77,6 +78,7 @@ public static function parse($value, $flags = 0, $references = array())
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self::$exceptionOnInvalidType = (bool) (Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE & $flags);
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self::$objectSupport = (bool) (Yaml::PARSE_OBJECT & $flags);
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self::$objectForMap = (bool) (Yaml::PARSE_OBJECT_FOR_MAP & $flags);
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self::$constantSupport = (bool) (Yaml::PARSE_CONSTANT & $flags);
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$value = trim($value);
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@@ -580,6 +582,19 @@ private static function evaluateScalar($scalar, $flags, $references = array())
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throw new ParseException('Object support when parsing a YAML file has been disabled.');
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}
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return;
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case 0 === strpos($scalar, '!php/const:'):
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if (self::$constantSupport) {
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if (defined($const = substr($scalar, 11))) {
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return constant($const);
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}
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throw new ParseException(sprintf('The constant "%s" is not defined.', $const));
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}
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if (self::$exceptionOnInvalidType) {
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throw new ParseException(sprintf('The string "%s" could not be parsed as a constant. Have you forgotten to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar));
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}
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return;
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case 0 === strpos($scalar, '!!float '):
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return (float) substr($scalar, 8);

‎src/Symfony/Component/Yaml/Tests/InlineTest.php

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@@ -35,6 +35,44 @@ public function testParseWithMapObjects($yaml, $value)
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$this->assertSame(serialize($value), serialize($actual));
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}
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/**
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* @dataProvider getTestsForParsePhpConstants
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*/
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public function testParsePhpConstants($yaml, $value)
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{
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$actual = Inline::parse($yaml, Yaml::PARSE_CONSTANT);
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$this->assertSame($value, $actual);
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}
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public function getTestsForParsePhpConstants()
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{
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return array(
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array('!php/const:Symfony\Component\Yaml\Yaml::PARSE_CONSTANT', Yaml::PARSE_CONSTANT),
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array('!php/const:PHP_INT_MAX', PHP_INT_MAX),
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array('[!php/const:PHP_INT_MAX]', array(PHP_INT_MAX)),
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array('{ foo: !php/const:PHP_INT_MAX }', array('foo' => PHP_INT_MAX)),
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);
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}
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/**
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* @expectedException \Symfony\Component\Yaml\Exception\ParseException
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* @expectedExceptionMessage The constant "WRONG_CONSTANT" is not defined
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*/
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public function testParsePhpConstantThrowsExceptionWhenUndefined()
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{
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Inline::parse('!php/const:WRONG_CONSTANT', Yaml::PARSE_CONSTANT);
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}
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/**
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* @expectedException \Symfony\Component\Yaml\Exception\ParseException
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* @expectedExceptionMessageRegExp #The string "!php/const:PHP_INT_MAX" could not be parsed as a constant.*#
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*/
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public function testParsePhpConstantThrowsExceptionOnInvalidType()
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{
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Inline::parse('!php/const:PHP_INT_MAX', Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE);
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}
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/**
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* @group legacy
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* @dataProvider getTestsForParseWithMapObjects

‎src/Symfony/Component/Yaml/Yaml.php

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const PARSE_DATETIME = 32;
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const DUMP_OBJECT_AS_MAP = 64;
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const DUMP_MULTI_LINE_LITERAL_BLOCK = 128;
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const PARSE_CONSTANT = 256;
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/**
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* Parses YAML into a PHP value.

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