PHP Class SassScriptParser

Parses SassScript. SassScript is lexed into {@link http://en.wikipedia.org/wiki/Reverse_Polish_notation Reverse Polish notation} by the SassScriptLexer and the calculated result returned.

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Public Properties

Property	Type	Description
$context		Used for error reporting
$instance		Hold a copy of a parser available to the general public.
$lexer		the lexer object

Public Methods

Method	Description
__construct ( ) : SassScriptParser	SassScriptParser constructor.
evaluate ( string $expression, SassContext $context, integer $environment = self::DEFAULT_ENV ) : SassLiteral	Evaluate a SassScript.
interpolate ( string $string, SassContext $context ) : string	Replace interpolated SassScript contained in '#{}' with the parsed value.
makeSingular ( $operands )	Reduces a set down to a singular form
parse ( string $expression, SassContext $context, integer $environment = self::DEFAULT_ENV ) : array	Parse SassScript to a set of tokens in RPN using the Shunting Yard Algorithm.

Method Details

__construct() public method

SassScriptParser constructor.

public __construct ( ) : SassScriptParser
return	SassScriptParser

evaluate() public method

Evaluate a SassScript.

public evaluate ( string $expression, SassContext $context, integer $environment = self::DEFAULT_ENV ) : SassLiteral
$expression	string	expression to parse
$context	SassContext	the context in which the expression is evaluated
$environment	integer	the environment in which the expression is evaluated
return	SassLiteral	parsed value

interpolate() public method

Replace interpolated SassScript contained in '#{}' with the parsed value.

public interpolate ( string $string, SassContext $context ) : string
$string	string	the text to interpolate
$context	SassContext	the context in which the string is interpolated
return	string	the interpolated text

makeSingular() public static method

Reduces a set down to a singular form

public static makeSingular ( $operands )

parse() public method

Parse SassScript to a set of tokens in RPN using the Shunting Yard Algorithm.

public parse ( string $expression, SassContext $context, integer $environment = self::DEFAULT_ENV ) : array
$expression	string	expression to parse
$context	SassContext	the context in which the expression is parsed
$environment	integer	the environment in which the expression is parsed
return	array	tokens in RPN

Property Details

$context public_oe static_oe property

Used for error reporting

public static $context

$instance public_oe static_oe property

Hold a copy of a parser available to the general public.

public static $instance

$lexer public_oe property

the lexer object

public $lexer