Switch GCMole to use GYP build file instead of SCons.

tools/gcmole/gcmole.lua

 -- Copyright 2011 the V8 project authors. All rights reserved.
 -- Redistribution and use in source and binary forms, with or without
 -- modification, are permitted provided that the following conditions are
 -- met:
 --
 --     * Redistributions of source code must retain the above copyright
 --       notice, this list of conditions and the following disclaimer.
 --     * Redistributions in binary form must reproduce the above
 --       copyright notice, this list of conditions and the following
 --       disclaimer in the documentation and/or other materials provided
@@ skipping 99 matching lines @@
       log("-- %s", filename)
       local action = cmd_line .. " src/" .. filename .. " 2>&1"
       if FLAGS.verbose then print('popen ', action) end
       local pipe = io.popen(action)
       func(filename, pipe:lines())
       pipe:close()
    end
 end
 
 -------------------------------------------------------------------------------
--- SConscript parsing
+-- GYP file parsing
 
-local function ParseSConscript()
-   local f = assert(io.open("src/SConscript"), "failed to open SConscript")
-   local sconscript = f:read('*a')
+local function ParseGYPFile()
+   local f = assert(io.open("tools/gyp/v8.gyp"), "failed to open GYP file")
+   local gyp = f:read('*a')
    f:close()
 
-   local SOURCES = sconscript:match "SOURCES = {(.-)}";
+   local result = {}
 
-   local sources = {}
-
-   for condition, list in
-      SOURCES:gmatch "'([^']-)': Split%(\"\"\"(.-)\"\"\"%)" do
+   for condition, sources in
+      gyp:gmatch "'sources': %[.-### gcmole%((.-)%) ###(.-)%]" do
       local files = {}
-      for file in list:gmatch "[^%s]+" do table.insert(files, file) end
-      sources[condition] = files
+      for file in sources:gmatch "'%.%./%.%./src/([^']-%.cc)'" do
+         table.insert(files, file)
+      end
+      result[condition] = files
    end
 
-   for condition, list in SOURCES:gmatch "'([^']-)': %[(.-)%]" do
-      local files = {}
-      for file in list:gmatch "'([^']-)'" do table.insert(files, file) end
-      sources[condition] = files
-   end
-
-   return sources
+   return result
 end
 
 local function EvaluateCondition(cond, props)
    if cond == 'all' then return true end
 
    local p, v = cond:match "(%w+):(%w+)"
 
    assert(p and v, "failed to parse condition: " .. cond)
    assert(props[p] ~= nil, "undefined configuration property: " .. p)
 
    return props[p] == v
 end
 
 local function BuildFileList(sources, props)
    local list = {}
    for condition, files in pairs(sources) do
       if EvaluateCondition(condition, props) then
          for i = 1, #files do table.insert(list, files[i]) end
       end
    end
    return list
 end
 
-local sources = ParseSConscript()
+local sources = ParseGYPFile()
 
 local function FilesForArch(arch)
    return BuildFileList(sources, { os = 'linux',
                                    arch = arch,
                                    mode = 'debug',
                                    simulator = ''})
 end
 
 local mtConfig = {}
 
@@ skipping 193 matching lines @@
 
 for _, arch in ipairs(ARCHS) do
    if not ARCHITECTURES[arch] then
       error ("Unknown arch: " .. arch)
    end
 
    errors = SafeCheckCorrectnessForArch(arch, report) or errors
 end
 
 os.exit(errors and 1 or 0)