Module: Ruby2CExtension::Parser

Defined in:
lib/ruby2cext/parser.rb

Overview

not really a parser, uses rubynode

Class Method Summary collapse

Class Method Details

.parse_string(str, file_name = "(parse)") ⇒ Object 



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# File 'lib/ruby2cext/parser.rb', line 8

def self.parse_string(str, file_name = "(parse)")
	res = {}
	# for the first parsing use original str, because it doesn't matter
	# for BEGIN stuff and we get better exceptions this way.
	if (tmp = str.parse_begin_to_nodes(file_name, 1))
		res[:begin] = tmp
	end
	# now wrap str in a class scope and strip the class node of
	# afterwards, to get a clean scope in the result. src should
	# not have syntax errors if str didn't.
	src = "class Object\n#{str}\nend"
	begin
		old_verb = $VERBOSE
		# turn warnings of here to avoid the repetition of parse warnings
		$VERBOSE = nil
		if (tmp = src.parse_to_nodes(file_name, 0))
			tmp = tmp.nd_next.nd_body
			if tmp.type == :scope && tmp.nd_next
				res[:tree] = tmp
			end
		end
	ensure
		$VERBOSE = old_verb
	end
	res
end