tools/gn/scope_per_file_provider.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef TOOLS_GN_SCOPE_PER_FILE_PROVIDER_H_
   6 #define TOOLS_GN_SCOPE_PER_FILE_PROVIDER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "tools/gn/scope.h"
  11 #include "tools/gn/source_file.h"
  12
  13 // ProgrammaticProvider for a scope to provide it with per-file built-in
  14 // variable support.
  15 class ScopePerFileProvider : public Scope::ProgrammaticProvider {
  16  public:
  17   // allow_target_vars allows the target-related variables to get resolved.
  18   // When allow_target_vars is unset, the target-related values will be
  19   // undefined to GN script.
  20   ScopePerFileProvider(Scope* scope, bool allow_target_vars);
  21   ~ScopePerFileProvider() override;
  22
  23   // ProgrammaticProvider implementation.
  24   const Value* GetProgrammaticValue(const base::StringPiece& ident) override;
  25
  26  private:
  27   const Value* GetCurrentToolchain();
  28   const Value* GetDefaultToolchain();
  29   const Value* GetPythonPath();
  30   const Value* GetRootBuildDir();
  31   const Value* GetRootGenDir();
  32   const Value* GetRootOutDir();
  33   const Value* GetTargetGenDir();
  34   const Value* GetTargetOutDir();
  35
  36   bool allow_target_vars_;
  37
  38   // All values are lazily created.
  39   scoped_ptr<Value> current_toolchain_;
  40   scoped_ptr<Value> default_toolchain_;
  41   scoped_ptr<Value> python_path_;
  42   scoped_ptr<Value> root_build_dir_;
  43   scoped_ptr<Value> root_gen_dir_;
  44   scoped_ptr<Value> root_out_dir_;
  45   scoped_ptr<Value> target_gen_dir_;
  46   scoped_ptr<Value> target_out_dir_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(ScopePerFileProvider);
  49 };
  50
  51 #endif  // TOOLS_GN_SCOPE_PER_FILE_PROVIDER_H_