Sha256: 75ae2dabcad110f6897d32dde774005cc8e04e48dd7a44e31b6c0c4757c5e215
Contents?: true
Size: 1.31 KB
Versions: 3
Compression:
Stored size: 1.31 KB
Contents
module Treetop
module Compiler
class Terminal < AtomicExpression
def compile(address, builder, parent_expression = nil)
super
# Handle modifiers:
insensitive = modifiers.text_value.include? 'i'
re = modifiers.text_value.include? 'r'
if re
grounded_regexp = "#{('\A'+eval(string)).inspect}"
cache_key = "'__#{modifiers.text_value}__'+(gr = #{grounded_regexp})"
re_modifiers = "#{insensitive ? 'Regexp::IGNORECASE' : 0}"
str = "@regexps[#{cache_key}] ||= Regexp.new(gr, #{re_modifiers})"
mode = ':regexp'
elsif insensitive
str = string.downcase
string_length = eval(str).length
mode = ':insens'
else
str = string
string_length = eval(str).length
mode = 'false'
end
builder.if__ "(match_len = has_terminal?(#{str}, #{mode}, index))" do
if address == 0 || decorated? || mode != 'false' || string_length > 1
assign_result "instantiate_node(#{node_class_name},input, index...(index + match_len))"
extend_result_with_inline_module
else
assign_lazily_instantiated_node
end
builder << "@index += match_len"
end
builder.else_ do
builder << "terminal_parse_failure(#{expected})"
assign_result 'nil'
end
end
def expected
single_quote(string)
end
end
end
end
Version data entries
3 entries across 3 versions & 2 rubygems