83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef TOOLS_GN_TARGET_GENERATOR_H_
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#define TOOLS_GN_TARGET_GENERATOR_H_
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#include <string>
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#include <vector>
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#include "base/basictypes.h"
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#include "base/memory/scoped_ptr.h"
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#include "tools/gn/source_dir.h"
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#include "tools/gn/target.h"
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class BuildSettings;
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class Err;
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class Location;
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class Scope;
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class Token;
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class Value;
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// Fills the variables in a Target object from a Scope (the result of a script
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// execution). Target-type-specific derivations of this class will be used
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// for each different type of function call. This class implements the common
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// behavior.
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class TargetGenerator {
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public:
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TargetGenerator(Target* target,
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Scope* scope,
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const Token& function_token,
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Err* err);
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~TargetGenerator();
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void Run();
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// The function token is the token of the function name of the generator for
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// this target. err() will be set on failure.
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static void GenerateTarget(Scope* scope,
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const Token& function_token,
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const std::vector<Value>& args,
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const std::string& output_type,
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Err* err);
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protected:
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// Derived classes implement this to do type-specific generation.
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virtual void DoRun() = 0;
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const BuildSettings* GetBuildSettings() const;
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void FillSources();
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void FillConfigs();
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// Sets the current toolchain as a dependecy of this target. All targets with
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// a dependency on the toolchain should call this function.
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void SetToolchainDependency();
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Target* target_;
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Scope* scope_;
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const Token& function_token_;
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Err* err_;
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// Sources are relative to this. This comes from the input file which doesn't
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// get freed so we don't acautlly have to make a copy.
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const SourceDir& input_directory_;
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private:
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void FillDependentConfigs(); // Includes all types of dependent configs.
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void FillData();
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void FillDependencies(); // Includes data dependencies.
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// Reads configs/deps from the given var name, and uses the given setting on
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// the target to save them.
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void FillGenericConfigs(const char* var_name,
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void (Target::*setter)(std::vector<const Config*>*));
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void FillGenericDeps(const char* var_name,
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void (Target::*setter)(std::vector<const Target*>*));
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DISALLOW_COPY_AND_ASSIGN(TargetGenerator);
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};
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#endif // TOOLS_GN_TARGET_GENERATOR_H_
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