Module: RubyParserStuff
- Included in:
- Ruby18Parser, Ruby19Parser, Ruby20Parser
- Defined in:
- lib/ruby_parser_extras.rb
Defined Under Namespace
Classes: Environment, Keyword, StackState
Constant Summary collapse
- VERSION =
SIGH
"3.3.0"
- ENCODING_ORDER =
Rhis is in sorted order of occurrence according to charlock_holmes against 500k files, with UTF_8 forced to the top.
Overwrite this contstant if you need something different.
[ Encoding::UTF_8, # moved to top to reflect default in 2.0 Encoding::ISO_8859_1, Encoding::ISO_8859_2, Encoding::ISO_8859_9, Encoding::SHIFT_JIS, Encoding::WINDOWS_1252, Encoding::EUC_JP ]
Instance Attribute Summary collapse
-
#canonicalize_conditions ⇒ Object
Canonicalize conditionals.
-
#comments ⇒ Object
readonly
Returns the value of attribute comments.
-
#env ⇒ Object
readonly
Returns the value of attribute env.
-
#file ⇒ Object
Returns the value of attribute file.
-
#in_def ⇒ Object
Returns the value of attribute in_def.
-
#in_single ⇒ Object
Returns the value of attribute in_single.
-
#lexer ⇒ Object
Returns the value of attribute lexer.
Instance Method Summary collapse
-
#arg_add(node1, node2) ⇒ Object
TODO: nuke.
-
#arg_blk_pass(node1, node2) ⇒ Object
TODO: nuke.
-
#arg_concat(node1, node2) ⇒ Object
TODO: nuke.
- #argl(x) ⇒ Object
- #args(args) ⇒ Object
- #array_to_hash(array) ⇒ Object
- #aryset(receiver, index) ⇒ Object
- #assignable(lhs, value = nil) ⇒ Object
- #backref_assign_error(ref) ⇒ Object
- #block_append(head, tail) ⇒ Object
- #block_dup_check(call_or_args, block) ⇒ Object
- #block_var(*args) ⇒ Object
- #block_var18(ary, splat, block) ⇒ Object
- #call_args(args) ⇒ Object
- #clean_mlhs(sexp) ⇒ Object
- #cond(node) ⇒ Object
- #debug20(n, v = nil, r = nil) ⇒ Object
-
#do_parse ⇒ Object
for pure ruby systems only.
-
#get_match_node(lhs, rhs) ⇒ Object
TODO: rename to new_match.
- #gettable(id) ⇒ Object
- #hack_encoding(str, extra = nil) ⇒ Object
-
#handle_encoding(str) ⇒ Object
Returns a UTF-8 encoded string after processing BOMs and magic encoding comments.
- #initialize(options = {}) ⇒ Object
-
#list_append(list, item) ⇒ Object
TODO: nuke me sigh.
-
#list_prepend(item, list) ⇒ Object
TODO: nuke me sigh.
- #literal_concat(head, tail) ⇒ Object
-
#logop(type, left, right) ⇒ Object
TODO: rename logical_op.
- #new_aref(val) ⇒ Object
- #new_body(val) ⇒ Object
- #new_call(recv, meth, args = nil) ⇒ Object
- #new_case(expr, body) ⇒ Object
- #new_class(val) ⇒ Object
- #new_compstmt(val) ⇒ Object
- #new_defn(val) ⇒ Object
- #new_defs(val) ⇒ Object
- #new_for(expr, var, body) ⇒ Object
- #new_if(c, t, f) ⇒ Object
- #new_iter(call, args, body) ⇒ Object
- #new_masgn(lhs, rhs, wrap = false) ⇒ Object
- #new_module(val) ⇒ Object
- #new_op_asgn(val) ⇒ Object
- #new_regexp(val) ⇒ Object
- #new_resbody(cond, body) ⇒ Object
- #new_sclass(val) ⇒ Object
- #new_super(args) ⇒ Object
- #new_undef(n, m = nil) ⇒ Object
- #new_until(block, expr, pre) ⇒ Object
- #new_until_or_while(type, block, expr, pre) ⇒ Object
- #new_when(cond, body) ⇒ Object
- #new_while(block, expr, pre) ⇒ Object
- #new_xstring(str) ⇒ Object
- #new_yield(args = nil) ⇒ Object
- #next_token ⇒ Object
-
#node_assign(lhs, rhs) ⇒ Object
TODO: rename new_assign.
- #on_error(et, ev, values) ⇒ Object
-
#process(str, file = "(string)", time = 10) ⇒ Object
(also: #parse)
Parse
str
at pathfile
and return a sexp. - #remove_begin(node) ⇒ Object
- #reset ⇒ Object
- #ret_args(node) ⇒ Object
- #s(*args) ⇒ Object
- #syntax_error(msg) ⇒ Object (also: #yyerror)
-
#value_expr(oldnode) ⇒ Object
HACK.
- #void_stmts(node) ⇒ Object
- #warning(s) ⇒ Object
Instance Attribute Details
#canonicalize_conditions ⇒ Object
Canonicalize conditionals. Eg:
not x ? a : b
becomes:
x ? b : a
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# File 'lib/ruby_parser_extras.rb', line 430 def canonicalize_conditions @canonicalize_conditions end |
#comments ⇒ Object (readonly)
Returns the value of attribute comments.
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# File 'lib/ruby_parser_extras.rb', line 117 def comments @comments end |
#env ⇒ Object (readonly)
Returns the value of attribute env.
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# File 'lib/ruby_parser_extras.rb', line 117 def env @env end |
#file ⇒ Object
Returns the value of attribute file.
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# File 'lib/ruby_parser_extras.rb', line 116 def file @file end |
#in_def ⇒ Object
Returns the value of attribute in_def.
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# File 'lib/ruby_parser_extras.rb', line 116 def in_def @in_def end |
#in_single ⇒ Object
Returns the value of attribute in_single.
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# File 'lib/ruby_parser_extras.rb', line 116 def in_single @in_single end |
#lexer ⇒ Object
Returns the value of attribute lexer.
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# File 'lib/ruby_parser_extras.rb', line 116 def lexer @lexer end |
Instance Method Details
#arg_add(node1, node2) ⇒ Object
TODO: nuke
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# File 'lib/ruby_parser_extras.rb', line 151 def arg_add(node1, node2) # TODO: nuke return s(:arglist, node2) unless node1 node1[0] = :arglist if node1[0] == :array return node1 << node2 if node1[0] == :arglist return s(:arglist, node1, node2) end |
#arg_blk_pass(node1, node2) ⇒ Object
TODO: nuke
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# File 'lib/ruby_parser_extras.rb', line 160 def arg_blk_pass node1, node2 # TODO: nuke node1 = s(:arglist, node1) unless [:arglist, :call_args, :array, :args].include? node1.first node1 << node2 if node2 node1 end |
#arg_concat(node1, node2) ⇒ Object
TODO: nuke
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# File 'lib/ruby_parser_extras.rb', line 166 def arg_concat node1, node2 # TODO: nuke raise "huh" unless node2 node1 << s(:splat, node2).compact node1 end |
#argl(x) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 565 def argl x x = s(:arglist, x) if x and x[0] != :arglist x end |
#args(args) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 249 def args args result = s(:args) args.each do |arg| case arg when Sexp then case arg.sexp_type when :args, :block, :array, :call_args then # HACK call_args mismatch result.concat arg[1..-1] when :block_arg then result << :"&#{arg.last}" when :shadow then if Sexp === result.last and result.last.sexp_type == :shadow then result.last << arg.last else result << arg end when :masgn, :block_pass, :hash then # HACK: remove. prolly call_args result << arg else raise "unhandled: #{arg.sexp_type} in #{args.inspect}" end when Symbol then result << arg when ",", "|", ";", "(", ")", nil then # ignore else raise "unhandled: #{arg.inspect} in #{args.inspect}" end end result end |
#array_to_hash(array) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 216 def array_to_hash array case array.sexp_type when :kwsplat then array else s(:hash, *array[1..-1]) end end |
#aryset(receiver, index) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 283 def aryset receiver, index index ||= [] s(:attrasgn, receiver, :"[]=", *index[1..-1]).compact # [][1..-1] => nil end |
#assignable(lhs, value = nil) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 288 def assignable(lhs, value = nil) id = lhs.to_sym unless Sexp === lhs id = id.to_sym if Sexp === id raise "write a test 1" if id.to_s =~ /^(?:self|nil|true|false|__LINE__|__FILE__)$/ raise SyntaxError, "Can't change the value of #{id}" if id.to_s =~ /^(?:self|nil|true|false|__LINE__|__FILE__)$/ result = case id.to_s when /^@@/ then asgn = in_def || in_single > 0 s((asgn ? :cvasgn : :cvdecl), id) when /^@/ then s(:iasgn, id) when /^\$/ then s(:gasgn, id) when /^[A-Z]/ then s(:cdecl, id) else case self.env[id] when :lvar, :dvar, nil then s(:lasgn, id) else raise "wtf? unknown type: #{self.env[id]}" end end self.env[id] ||= :lvar if result.sexp_type == :lasgn result << value if value return result end |
#backref_assign_error(ref) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 570 def backref_assign_error ref # TODO: need a test for this... obviously case ref.first when :nth_ref then raise "write a test 2" raise SyntaxError, "Can't set variable %p" % ref.last when :back_ref then raise "write a test 3" raise SyntaxError, "Can't set back reference %p" % ref.last else raise "Unknown backref type: #{ref.inspect}" end end |
#block_append(head, tail) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 323 def block_append(head, tail) return head if tail.nil? return tail if head.nil? line = [head.line, tail.line].compact.min head = remove_begin(head) head = s(:block, head) unless head.node_type == :block head.line = line head << tail end |
#block_dup_check(call_or_args, block) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1063 def block_dup_check call_or_args, block syntax_error "Both block arg and actual block given." if block and call_or_args.block_pass? end |
#block_var(*args) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 193 def block_var *args result = self.args args result[0] = :masgn result end |
#block_var18(ary, splat, block) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 199 def block_var18 ary, splat, block ary ||= s(:array) if splat then splat = splat[1] unless Symbol === splat ary << "*#{splat}".to_sym end ary << "&#{block[1]}".to_sym if block if ary.length > 2 or ary.splat then # HACK s(:masgn, *ary[1..-1]) else ary.last end end |
#call_args(args) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 225 def call_args args result = s(:call_args) args.each do |arg| case arg when Sexp then case arg.sexp_type when :array, :args, :call_args then # HACK? remove array at some point result.concat arg[1..-1] else result << arg end when Symbol then result << arg when ",", nil then # ignore else raise "unhandled: #{arg.inspect} in #{args.inspect}" end end result end |
#clean_mlhs(sexp) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 172 def clean_mlhs sexp case sexp.sexp_type when :masgn then if sexp.size == 2 and sexp[1].sexp_type == :array then s(:masgn, *sexp[1][1..-1].map { |sub| clean_mlhs sub }) else debug20 5 sexp end when :gasgn, :iasgn, :lasgn, :cvasgn then if sexp.size == 2 then sexp.last else debug20 7 sexp # optional value end else raise "unsupported type: #{sexp.inspect}" end end |
#cond(node) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 336 def cond node return nil if node.nil? node = value_expr node case node.first when :lit then if Regexp === node.last then return s(:match, node) else return node end when :and then return s(:and, cond(node[1]), cond(node[2])) when :or then return s(:or, cond(node[1]), cond(node[2])) when :dot2 then label = "flip#{node.hash}" env[label] = :lvar return s(:flip2, node[1], node[2]) when :dot3 then label = "flip#{node.hash}" env[label] = :lvar return s(:flip3, node[1], node[2]) else return node end end |
#debug20(n, v = nil, r = nil) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 126 def debug20 n, v = nil, r = nil raise "not yet #{n} #{v.inspect} => #{r.inspect}" unless $good20[n] end |
#do_parse ⇒ Object
for pure ruby systems only
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# File 'lib/ruby_parser_extras.rb', line 367 def do_parse _racc_do_parse_rb(_racc_setup, false) end |
#get_match_node(lhs, rhs) ⇒ Object
TODO: rename to new_match
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# File 'lib/ruby_parser_extras.rb', line 371 def get_match_node lhs, rhs # TODO: rename to new_match if lhs then case lhs[0] when :dregx, :dregx_once then return s(:match2, lhs, rhs).line(lhs.line) when :lit then return s(:match2, lhs, rhs).line(lhs.line) if Regexp === lhs.last end end if rhs then case rhs[0] when :dregx, :dregx_once then return s(:match3, rhs, lhs).line(lhs.line) when :lit then return s(:match3, rhs, lhs).line(lhs.line) if Regexp === rhs.last end end return new_call(lhs, :"=~", argl(rhs)).line(lhs.line) end |
#gettable(id) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 393 def gettable(id) id = id.to_sym if String === id result = case id.to_s when /^@@/ then s(:cvar, id) when /^@/ then s(:ivar, id) when /^\$/ then s(:gvar, id) when /^[A-Z]/ then s(:const, id) else type = env[id] if type then s(type, id) else new_call(nil, id) end end result.line(result.line - 1) if result.line and lexer.src.bol? raise "identifier #{id.inspect} is not valid" unless result result end |
#hack_encoding(str, extra = nil) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1001 def hack_encoding str, extra = nil encodings = ENCODING_ORDER.dup encodings.unshift(extra) unless extra.nil? # terrible, horrible, no good, very bad, last ditch effort. encodings.each do |enc| begin str.force_encoding enc if str.valid_encoding? then str.encode! Encoding::UTF_8 break end rescue Encoding::InvalidByteSequenceError # do nothing rescue Encoding::UndefinedConversionError # do nothing end end # no amount of pain is enough for you. raise "Bad encoding. Need a magic encoding comment." unless str.encoding.name == "UTF-8" end |
#handle_encoding(str) ⇒ Object
Returns a UTF-8 encoded string after processing BOMs and magic encoding comments.
Holy crap… ok. Here goes:
Ruby’s file handling and encoding support is insane. We need to be able to lex a file. The lexer file is explicitly UTF-8 to make things cleaner. This allows us to deal with extended chars in class and method names. In order to do this, we need to encode all input source files as UTF-8. First, we look for a UTF-8 BOM by looking at the first line while forcing its encoding to ASCII-8BIT. If we find a BOM, we strip it and set the expected encoding to UTF-8. Then, we search for a magic encoding comment. If found, it overrides the BOM. Finally, we force the encoding of the input string to whatever was found, and then encode that to UTF-8 for compatibility with the lexer.
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# File 'lib/ruby_parser_extras.rb', line 970 def handle_encoding str str = str.dup ruby19 = str.respond_to? :encoding encoding = nil header = str.lines.first(2) header.map! { |s| s.force_encoding "ASCII-8BIT" } if ruby19 first = header.first || "" encoding, str = "utf-8", str[3..-1] if first =~ /\A\xEF\xBB\xBF/ encoding = $1.strip if header.find { |s| s[/^#.*?-\*-.*?coding:\s*([^ ;]+).*?-\*-/, 1] || s[/^#.*(?:en)?coding(?:\s*[:=])\s*([\w-]+)/, 1] } if encoding then if ruby19 then encoding.sub!(/utf-8-.+$/, 'utf-8') # HACK for stupid emacs formats hack_encoding str, encoding else warn "Skipping magic encoding comment" end else # nothing specified... ugh. try to encode as utf-8 hack_encoding str if ruby19 end str end |
#initialize(options = {}) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 432 def initialize( = {}) super() v = self.class.name[/1[89]|20/] self.lexer = RubyLexer.new v && v.to_i self.lexer.parser = self @env = RubyParserStuff::Environment.new @comments = [] @canonicalize_conditions = true self.reset end |
#list_append(list, item) ⇒ Object
TODO: nuke me sigh
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# File 'lib/ruby_parser_extras.rb', line 448 def list_append list, item # TODO: nuke me *sigh* return s(:array, item) unless list list = s(:array, list) unless Sexp === list && list.first == :array list << item end |
#list_prepend(item, list) ⇒ Object
TODO: nuke me sigh
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# File 'lib/ruby_parser_extras.rb', line 454 def list_prepend item, list # TODO: nuke me *sigh* list = s(:array, list) unless Sexp === list && list[0] == :array list.insert 1, item list end |
#literal_concat(head, tail) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 460 def literal_concat head, tail return tail unless head return head unless tail htype, ttype = head[0], tail[0] head = s(:dstr, '', head) if htype == :evstr case ttype when :str then if htype == :str head[-1] << tail[-1] elsif htype == :dstr and head.size == 2 then head[-1] << tail[-1] else head << tail end when :dstr then if htype == :str then tail[1] = head[-1] + tail[1] head = tail else tail[0] = :array tail[1] = s(:str, tail[1]) tail.delete_at 1 if tail[1] == s(:str, '') head.push(*tail[1..-1]) end when :evstr then head[0] = :dstr if htype == :str if head.size == 2 and tail.size > 1 and tail[1][0] == :str then head[-1] << tail[1][-1] head[0] = :str if head.size == 2 # HACK ? else head.push(tail) end else x = [head, tail] raise "unknown type: #{x.inspect}" end return head end |
#logop(type, left, right) ⇒ Object
TODO: rename logical_op
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# File 'lib/ruby_parser_extras.rb', line 504 def logop(type, left, right) # TODO: rename logical_op left = value_expr left if left and left[0] == type and not left.paren then node, second = left, nil while (second = node[2]) && second[0] == type and not second.paren do node = second end node[2] = s(type, second, right) return left end return s(type, left, right) end |
#new_aref(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 522 def new_aref val val[2] ||= s(:arglist) val[2][0] = :arglist if val[2][0] == :array # REFACTOR if val[0].node_type == :self then result = new_call nil, :"[]", val[2] else result = new_call val[0], :"[]", val[2] end result end |
#new_body(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 533 def new_body val body, resbody, elsebody, ensurebody = val result = body if resbody then result = s(:rescue) result << body if body res = resbody while res do result << res res = res.resbody(true) end result << elsebody if elsebody result.line = (body || resbody).line end if elsebody and not resbody then warning("else without rescue is useless") result = s(:begin, result) if result result = block_append(result, elsebody) end result = s(:ensure, result, ensurebody).compact if ensurebody result end |
#new_call(recv, meth, args = nil) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 584 def new_call recv, meth, args = nil result = s(:call, recv, meth) # TODO: need a test with f(&b) to produce block_pass # TODO: need a test with f(&b) { } to produce warning args ||= s(:arglist) args[0] = :arglist if [:args, :array, :call_args].include? args.first args = s(:arglist, args) unless args.first == :arglist # HACK quick hack to make this work quickly... easy to clean up above result.concat args[1..-1] line = result.grep(Sexp).map(&:line).compact.min result.line = line if line result end |
#new_case(expr, body) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 603 def new_case expr, body result = s(:case, expr) line = (expr || body).line while body and body.node_type == :when result << body body = body.delete_at 3 end result[2..-1].each do |node| block = node.block(:delete) node.concat block[1..-1] if block end # else body = nil if body == s(:block) result << body result.line = line result end |
#new_class(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 625 def new_class val line, path, superclass, body = val[1], val[2], val[3], val[5] result = s(:class, path, superclass) if body then if body.first == :block then result.push(*body[1..-1]) else result.push body end end result.line = line result.comments = self.comments.pop result end |
#new_compstmt(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 643 def new_compstmt val result = void_stmts(val.grep(Sexp)[0]) result = remove_begin(result) if result result end |
#new_defn(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 649 def new_defn val (_, line), name, _, args, body, * = val body ||= s(:nil) result = s(:defn, name.to_sym, args) if body then if body.first == :block then result.push(*body[1..-1]) else result.push body end end args.line line result.line = line result.comments = self.comments.pop result end |
#new_defs(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 670 def new_defs val recv, name, args, body = val[1], val[4], val[6], val[7] result = s(:defs, recv, name.to_sym, args) if body then if body.first == :block then result.push(*body[1..-1]) else result.push body end end result.line = recv.line result.comments = self.comments.pop result end |
#new_for(expr, var, body) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 688 def new_for expr, var, body result = s(:for, expr, var).line(var.line) result << body if body result end |
#new_if(c, t, f) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 694 def new_if c, t, f l = [c.line, t && t.line, f && f.line].compact.min c = cond c c, t, f = c.last, f, t if c[0] == :not and canonicalize_conditions s(:if, c, t, f).line(l) end |
#new_iter(call, args, body) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 701 def new_iter call, args, body body ||= nil args ||= s(:args) args = s(:args, args) if Symbol === args result = s(:iter) result << call if call result << args result << body if body args[0] = :args unless args == 0 result end |
#new_masgn(lhs, rhs, wrap = false) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 717 def new_masgn lhs, rhs, wrap = false rhs = value_expr(rhs) rhs = lhs[1] ? s(:to_ary, rhs) : s(:array, rhs) if wrap lhs.delete_at 1 if lhs[1].nil? lhs << rhs lhs end |
#new_module(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 727 def new_module val line, path, body = val[1], val[2], val[4] result = s(:module, path) if body then # REFACTOR? if body.first == :block then result.push(*body[1..-1]) else result.push body end end result.line = line result.comments = self.comments.pop result end |
#new_op_asgn(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 745 def new_op_asgn val lhs, asgn_op, arg = val[0], val[1].to_sym, val[2] name = lhs.value arg = remove_begin(arg) result = case asgn_op # REFACTOR when :"||" then lhs << arg s(:op_asgn_or, self.gettable(name), lhs) when :"&&" then lhs << arg s(:op_asgn_and, self.gettable(name), lhs) else # TODO: why [2] ? lhs[2] = new_call(self.gettable(name), asgn_op, argl(arg)) lhs end result.line = lhs.line result end |
#new_regexp(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 765 def new_regexp val node = val[1] || s(:str, '') = val[2] o, k = 0, nil .split(//).uniq.each do |c| # FIX: this has a better home v = { 'x' => Regexp::EXTENDED, 'i' => Regexp::IGNORECASE, 'm' => Regexp::MULTILINE, 'o' => Regexp::ONCE, 'n' => Regexp::ENC_NONE, 'e' => Regexp::ENC_EUC, 's' => Regexp::ENC_SJIS, 'u' => Regexp::ENC_UTF8, }[c] raise "unknown regexp option: #{c}" unless v o += v # encoding options are ignored on 1.9+ k = c if c =~ /[esu]/ if RUBY_VERSION < "1.9" end case node[0] when :str then node[0] = :lit node[1] = if k then Regexp.new(node[1], o, k) else begin Regexp.new(node[1], o) rescue RegexpError => e warn "Ignoring: #{e.message}" Regexp.new(node[1], Regexp::ENC_NONE) end end when :dstr then if =~ /o/ then node[0] = :dregx_once else node[0] = :dregx end node << o if o and o != 0 else node = s(:dregx, '', node); node[0] = :dregx_once if =~ /o/ node << o if o and o != 0 end node end |
#new_resbody(cond, body) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 817 def new_resbody cond, body if body && body.first == :block then body.shift # remove block and splat it in directly else body = [body] end s(:resbody, cond, *body) end |
#new_sclass(val) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 826 def new_sclass val recv, in_def, in_single, body = val[3], val[4], val[6], val[7] result = s(:sclass, recv) if body then if body.first == :block then result.push(*body[1..-1]) else result.push body end end result.line = val[2] self.in_def = in_def self.in_single = in_single result end |
#new_super(args) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 845 def new_super args if args && args.node_type == :block_pass then s(:super, args) else args ||= s(:arglist) s(:super, *args[1..-1]) end end |
#new_undef(n, m = nil) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 854 def new_undef n, m = nil if m then block_append(n, s(:undef, m)) else s(:undef, n) end end |
#new_until(block, expr, pre) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 862 def new_until block, expr, pre new_until_or_while :until, block, expr, pre end |
#new_until_or_while(type, block, expr, pre) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 866 def new_until_or_while type, block, expr, pre other = type == :until ? :while : :until line = [block && block.line, expr.line].compact.min block, pre = block.last, false if block && block[0] == :begin expr = cond expr result = unless expr.first == :not and canonicalize_conditions then s(type, expr, block, pre) else s(other, expr.last, block, pre) end result.line = line result end |
#new_when(cond, body) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 883 def new_when cond, body s(:when, cond, body) end |
#new_while(block, expr, pre) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 887 def new_while block, expr, pre new_until_or_while :while, block, expr, pre end |
#new_xstring(str) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 891 def new_xstring str if str then case str[0] when :str str[0] = :xstr when :dstr str[0] = :dxstr else str = s(:dxstr, '', str) end str else s(:xstr, '') end end |
#new_yield(args = nil) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 907 def new_yield args = nil # TODO: raise args.inspect unless [:arglist].include? args.first # HACK raise "write a test 4" if args && args.node_type == :block_pass raise SyntaxError, "Block argument should not be given." if args && args.node_type == :block_pass args ||= s(:arglist) args[0] = :arglist if [:call_args, :array].include?(args[0]) args = s(:arglist, args) unless args.first == :arglist return s(:yield, *args[1..-1]) end |
#next_token ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 921 def next_token if self.lexer.advance then return self.lexer.token, self.lexer.yacc_value else return [false, '$end'] end end |
#node_assign(lhs, rhs) ⇒ Object
TODO: rename new_assign
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# File 'lib/ruby_parser_extras.rb', line 929 def node_assign(lhs, rhs) # TODO: rename new_assign return nil unless lhs rhs = value_expr rhs case lhs[0] when :gasgn, :iasgn, :lasgn, :masgn, :cdecl, :cvdecl, :cvasgn then lhs << rhs when :attrasgn then lhs << rhs when :call then args = lhs.pop unless Symbol === lhs.last lhs.concat arg_add(args, rhs)[1..-1] when :const then lhs[0] = :cdecl lhs << rhs else raise "unknown lhs #{lhs.inspect}" end lhs end |
#on_error(et, ev, values) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1115 def on_error(et, ev, values) super rescue Racc::ParseError => e # I don't like how the exception obscures the error message e..replace "%s:%p :: %s" % [self.file, lexer.lineno, e..strip] warn e. if $DEBUG raise end |
#process(str, file = "(string)", time = 10) ⇒ Object Also known as: parse
Parse str
at path file
and return a sexp. Raises Timeout::Error if it runs for more than time
seconds.
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# File 'lib/ruby_parser_extras.rb', line 1029 def process(str, file = "(string)", time = 10) Timeout.timeout time do raise "bad val: #{str.inspect}" unless String === str str = handle_encoding str self.file = file.dup self.lexer.src = str @yydebug = ENV.has_key? 'DEBUG' do_parse end end |
#remove_begin(node) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1046 def remove_begin node oldnode = node if node and :begin == node[0] and node.size == 2 then node = node[-1] node.line = oldnode.line end node end |
#reset ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1055 def reset lexer.reset self.in_def = false self.in_single = 0 self.env.reset self.comments.clear end |
#ret_args(node) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1068 def ret_args node if node then raise "write a test 5" if node[0] == :block_pass raise SyntaxError, "block argument should not be given" if node[0] == :block_pass node[0] = :array if node[0] == :call_args node = node.last if node[0] == :array && node.size == 2 # HACK matz wraps ONE of the FOUR splats in a newline to # distinguish. I use paren for now. ugh node = s(:svalue, node) if node[0] == :splat and not node.paren node[0] = :svalue if node[0] == :arglist && node[1][0] == :splat end node end |
#s(*args) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1087 def s(*args) result = Sexp.new(*args) result.line ||= lexer.lineno if lexer.src # otherwise... result.file = self.file result end |
#syntax_error(msg) ⇒ Object Also known as: yyerror
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# File 'lib/ruby_parser_extras.rb', line 147 def syntax_error msg raise RubyParser::SyntaxError, msg end |
#value_expr(oldnode) ⇒ Object
HACK
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# File 'lib/ruby_parser_extras.rb', line 1094 def value_expr oldnode # HACK node = remove_begin oldnode node.line = oldnode.line if oldnode node[2] = value_expr(node[2]) if node and node[0] == :if node end |
#void_stmts(node) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1101 def void_stmts node return nil unless node return node unless node[0] == :block node[1..-1] = node[1..-1].map { |n| remove_begin(n) } node end |
#warning(s) ⇒ Object
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# File 'lib/ruby_parser_extras.rb', line 1109 def warning s # do nothing for now end |