Sha256: 958a140d3f3f30a72ffbd4a3121549819aaf25192aa6372dc7f91f832f162632
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Size: 1.83 KB
Versions: 6
Compression:
Stored size: 1.83 KB
Contents
module Treetop
module Runtime
class CompiledParser
include Treetop::Runtime
attr_reader :input, :index
def parse(input)
prepare_to_parse(input)
return root
end
protected
attr_reader :node_cache
attr_writer :index
def prepare_to_parse(input)
@input = input
reset_index
@node_cache = Hash.new {|hash, key| hash[key] = Hash.new}
end
def reset_index
@index = 0
end
def parse_char_class(char_class_re, char_class_string, node_class = SyntaxNode, inline_module = nil)
if input.index(char_class_re, index) == index
result = node_class.new(input, index...(index + 1))
result.extend(inline_module) if inline_module
@index += 1
result
else
terminal_parse_failure("[#{char_class_string}]")
end
end
def parse_terminal(terminal_string, node_class = SyntaxNode, inline_module = nil)
if input.index(terminal_string, index) == index
result = node_class.new(input, index...(index + terminal_string.length))
result.extend(inline_module) if inline_module
@index += terminal_string.length
result
else
terminal_parse_failure(terminal_string)
end
end
def parse_anything(node_class = SyntaxNode, inline_module = nil)
if index < input.length
result = node_class.new(input, index...(index + 1))
result.extend(inline_module) if inline_module
@index += 1
result
else
terminal_parse_failure("any character")
end
end
def terminal_parse_failure(expected_string)
TerminalParseFailure.new(input, index, expected_string)
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems