mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-12-11 06:36:11 +03:00
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
|
// 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/err.h"
|
||
|
|
#include "tools/gn/functions.h"
|
||
|
|
#include "tools/gn/parse_tree.h"
|
||
|
|
#include "tools/gn/scope.h"
|
||
|
|
|
||
|
|
namespace functions {
|
||
|
|
|
||
|
|
const char kSetDefaults[] = "set_defaults";
|
||
|
|
const char kSetDefaults_HelpShort[] =
|
||
|
|
"set_defaults: Set default values for a target type.";
|
||
|
|
const char kSetDefaults_Help[] =
|
||
|
|
R"(set_defaults: Set default values for a target type.
|
||
|
|
|
||
|
|
set_defaults(<target_type_name>) { <values...> }
|
||
|
|
|
||
|
|
Sets the default values for a given target type. Whenever target_type_name is
|
||
|
|
seen in the future, the values specified in set_default's block will be
|
||
|
|
copied into the current scope.
|
||
|
|
|
||
|
|
When the target type is used, the variable copying is very strict. If a
|
||
|
|
variable with that name is already in scope, the build will fail with an
|
||
|
|
error.
|
||
|
|
|
||
|
|
set_defaults can be used for built-in target types ("executable",
|
||
|
|
"shared_library", etc.) and custom ones defined via the "template" command.
|
||
|
|
It can be called more than once and the most recent call in any scope will
|
||
|
|
apply, but there is no way to refer to the previous defaults and modify them
|
||
|
|
(each call to set_defaults must supply a complete list of all defaults it
|
||
|
|
wants). If you want to share defaults, store them in a separate variable.
|
||
|
|
|
||
|
|
Example
|
||
|
|
|
||
|
|
set_defaults("static_library") {
|
||
|
|
configs = [ "//tools/mything:settings" ]
|
||
|
|
}
|
||
|
|
|
||
|
|
static_library("mylib")
|
||
|
|
# The configs will be auto-populated as above. You can remove it if
|
||
|
|
# you don't want the default for a particular default:
|
||
|
|
configs -= [ "//tools/mything:settings" ]
|
||
|
|
}
|
||
|
|
)";
|
||
|
|
|
||
|
|
Value RunSetDefaults(Scope* scope,
|
||
|
|
const FunctionCallNode* function,
|
||
|
|
const std::vector<Value>& args,
|
||
|
|
BlockNode* block,
|
||
|
|
Err* err) {
|
||
|
|
if (!EnsureSingleStringArg(function, args, err))
|
||
|
|
return Value();
|
||
|
|
const std::string& target_type(args[0].string_value());
|
||
|
|
|
||
|
|
if (!block) {
|
||
|
|
FillNeedsBlockError(function, err);
|
||
|
|
return Value();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Run the block for the rule invocation.
|
||
|
|
Scope block_scope(scope);
|
||
|
|
block->Execute(&block_scope, err);
|
||
|
|
if (err->has_error())
|
||
|
|
return Value();
|
||
|
|
|
||
|
|
// Now copy the values set on the scope we made into the free-floating one
|
||
|
|
// (with no containing scope) used to hold the target defaults.
|
||
|
|
Scope* dest = scope->MakeTargetDefaults(target_type);
|
||
|
|
block_scope.NonRecursiveMergeTo(dest, Scope::MergeOptions(), function,
|
||
|
|
"<SHOULD NOT FAIL>", err);
|
||
|
|
return Value();
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace functions
|