[GN]: Support for loadable modules

tools/gn/functions_target.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "tools/gn/functions.h"
 
 #include "tools/gn/config_values_generator.h"
 #include "tools/gn/err.h"
 #include "tools/gn/parse_tree.h"
 #include "tools/gn/scope.h"
 #include "tools/gn/target_generator.h"
 #include "tools/gn/template.h"
 #include "tools/gn/value.h"
 #include "tools/gn/variables.h"
 
 #define DEPENDENT_CONFIG_VARS \
     "  Dependent configs: all_dependent_configs, public_configs\n"
 #define DEPS_VARS \
     "  Deps: data_deps, deps, forward_dependent_configs_from, public_deps\n"
 #define GENERAL_TARGET_VARS \
     "  General: check_includes, configs, data, inputs, output_name,\n" \
-    "           output_extension, public, sources, testonly, visibility\n"
+    "           output_extension, public, sources, testonly, visibility,\n" \
+    "           loadable_module, darwin_bundle\n"
 
 namespace functions {
 
 namespace {
 
 Value ExecuteGenericTarget(const char* target_type,
                            Scope* scope,
                            const FunctionCallNode* function,
                            const std::vector<Value>& args,
                            BlockNode* block,
@@ skipping 463 matching lines @@
     "\n"
     "  target(my_type, \"foo\") {\n"
     "    ...\n"
     "  }\n";
 Value RunTarget(Scope* scope,
                 const FunctionCallNode* function,
                 const std::vector<Value>& args,
                 BlockNode* block,
                 Err* err) {
   if (args.size() != 2) {
-    *err = Err(function, "Expected two arguments.",
-               "Dude, try \"gn help target\".");
+    *err = Err(function, "Expected two arguments. Try \"gn help target\".");
     return Value();
   }
 
   // The first argument must be a string (the target type). Don't type-check
   // the second argument since the target-specific function will do that.
   if (!args[0].VerifyTypeIs(Value::STRING, err))
     return Value();
   const std::string& target_type = args[0].string_value();
 
   // The rest of the args are passed to the function.
   std::vector<Value> sub_args(args.begin() + 1, args.end());
 
   // Run a template if it is one.
   const Template* templ = scope->GetTemplate(target_type);
   if (templ)
     return templ->Invoke(scope, function, sub_args, block, err);
 
   // Otherwise, assume the target is a built-in target type.
   return ExecuteGenericTarget(target_type.c_str(), scope, function, sub_args,
                               block, err);
 }
 
 }  // namespace functions