Class: Sass::Script::Parser
Overview
The parser for SassScript. It parses a string of code into a tree of Nodes.
Class Method Summary collapse
-
.parse(str, line, offset, filename = nil) ⇒ Script::Node
Parses a SassScript expression.
Instance Method Summary collapse
-
#initialize(str, line, offset, filename = nil) ⇒ Parser
constructor
A new instance of Parser.
-
#parse ⇒ Script::Node
Parses a SassScript expression.
-
#parse_interpolated ⇒ Script::Node
Parses a SassScript expression within an interpolated segment (
#{}
).
Constructor Details
#initialize(str, line, offset, filename = nil) ⇒ Parser
Returns a new instance of Parser.
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# File 'lib/sass/script/parser.rb', line 15
def initialize(str, line, offset, filename = nil)
@filename = filename
@lexer = Lexer.new(str, line, offset)
end
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Class Method Details
.parse(str, line, offset, filename = nil) ⇒ Script::Node
Parses a SassScript expression.
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# File 'lib/sass/script/parser.rb', line 49
def self.parse(*args)
new(*args).parse
end
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Instance Method Details
#parse ⇒ Script::Node
Parses a SassScript expression.
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# File 'lib/sass/script/parser.rb', line 37
def parse
expr = assert_expr :expr
raise Sass::SyntaxError.new("Unexpected #{@lexer.peek.type} token.") unless @lexer.done?
expr
end
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#parse_interpolated ⇒ Script::Node
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.
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# File 'lib/sass/script/parser.rb', line 27
def parse_interpolated
expr = assert_expr :expr
assert_tok :end_interpolation
expr
end
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