tools/gn/template.h

   1 // Copyright 2014 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_TEMPLATE_H_
   6 #define TOOLS_GN_TEMPLATE_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/scoped_ptr.h"
  12
  13 class BlockNode;
  14 class Err;
  15 class FunctionCallNode;
  16 class LocationRange;
  17 class Scope;
  18 class Value;
  19
  20 class Template {
  21  public:
  22   // Makes a new closure based on the given scope.
  23   Template(const Scope* scope, const FunctionCallNode* def);
  24
  25   // Takes ownership of a previously-constructed closure.
  26   Template(scoped_ptr<Scope> closure, const FunctionCallNode* def);
  27
  28   ~Template();
  29
  30   // Makes a copy of this template.
  31   scoped_ptr<Template> Clone() const;
  32
  33   // Invoke the template. The values correspond to the state of the code
  34   // invoking the template.
  35   Value Invoke(Scope* scope,
  36                const FunctionCallNode* invocation,
  37                const std::vector<Value>& args,
  38                BlockNode* block,
  39                Err* err) const;
  40
  41   // Returns the location range where this template was defined.
  42   LocationRange GetDefinitionRange() const;
  43
  44  private:
  45   Template();
  46
  47   scoped_ptr<Scope> closure_;
  48   const FunctionCallNode* definition_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(Template);
  51 };
  52
  53 #endif  // TOOLS_GN_TEMPLATE_H_