Class Sass::Script::Parser
In: lib/sass/script/parser.rb
Parent: Object

The parser for SassScript. It parses a string of code into a tree of {Script::Node}s.

Methods

Constants

PRECEDENCE = [ :comma, :single_eq, :concat, :or, :and, [:eq, :neq], [:gt, :gte, :lt, :lte], [:plus, :minus], [:times, :div, :mod], ]
ASSOCIATIVE = [:comma, :concat, :plus, :times]
EXPR_NAMES = { :string => "string", :default => "expression (e.g. 1px, bold)", :arglist => "mixin argument", :fn_arglist => "function argument", }   It would be possible to have unified assert and try methods, but detecting the method/token difference turns out to be quite expensive.

Public Class methods

Returns whether or not the given operation is associative.

@private

@param str [String, StringScanner] The source text to parse @param line [Fixnum] The line on which the SassScript appears.

  Used for error reporting

@param offset [Fixnum] The number of characters in on which the SassScript appears.

  Used for error reporting

@param options [{Symbol => Object}] An options hash;

  see {file:SASS_REFERENCE.md#sass_options the Sass options documentation}

Parses a SassScript expression.

@overload parse(str, line, offset, filename = nil) @return [Script::Node] The root node of the parse tree @see Parser#initialize @see Parser#parse

Returns an integer representing the precedence of the given operator. A lower integer indicates a looser binding.

@private

Public Instance methods

The line number of the parser‘s current position.

@return [Fixnum]

Parses a SassScript expression.

@return [Script::Node] The root node of the parse tree @raise [Sass::SyntaxError] if the expression isn‘t valid SassScript

Parses a SassScript expression within an interpolated segment (`#{}`). This means that it stops when it comes across an unmatched `}`, which signals the end of an interpolated segment, it returns rather than throwing an error.

@return [Script::Node] The root node of the parse tree @raise [Sass::SyntaxError] if the expression isn‘t valid SassScript

Parses the argument list for a mixin definition.

@return [Array<Script::Node>] The root nodes of the arguments. @raise [Sass::SyntaxError] if the argument list isn‘t valid SassScript

Parses the argument list for a mixin include.

@return [Array<Script::Node>] The root nodes of the arguments. @raise [Sass::SyntaxError] if the argument list isn‘t valid SassScript

Parses a SassScript expression, ending it when it encounters one of the given identifier tokens.

@param [include?(String)] A set of strings that delimit the expression. @return [Script::Node] The root node of the parse tree @raise [Sass::SyntaxError] if the expression isn‘t valid SassScript

[Validate]