Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/file_template.h

-// 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.
-
-#ifndef TOOLS_GN_FILE_TEMPLATE_H_
-#define TOOLS_GN_FILE_TEMPLATE_H_
-
-#include "base/basictypes.h"
-#include "base/containers/stack_container.h"
-#include "tools/gn/err.h"
-#include "tools/gn/value.h"
-
-class ParseNode;
-
-class FileTemplate {
- public:
-  struct Subrange {
-    enum Type {
-      LITERAL = 0,
-      SOURCE,
-      NAME_PART,
-      NUM_TYPES  // Must be last
-    };
-    Subrange(Type t, const std::string& l = std::string())
-        : type(t),
-          literal(l) {
-    }
-
-    Type type;
-
-    // When type_ == LITERAL, this specifies the literal.
-    std::string literal;
-  };
-
-  // Constructs a template from the given value. On error, the err will be
-  // set. In this case you should not use this object.
-  FileTemplate(const Value& t, Err* err);
-  FileTemplate(const std::vector<std::string>& t);
-  ~FileTemplate();
-
-  // Applies this template to the given list of sources, appending all
-  // results to the given dest list. The sources must be a list for the
-  // one that takes a value as an input, otherwise the given error will be set.
-  void Apply(const Value& sources,
-             const ParseNode* origin,
-             std::vector<Value>* dest,
-             Err* err) const;
-  void ApplyString(const std::string& input,
-                   std::vector<std::string>* output) const;
-
-  // Known template types.
-  static const char kSource[];
-  static const char kSourceNamePart[];
-
- private:
-  typedef base::StackVector<Subrange, 8> Template;
-  typedef base::StackVector<Template, 8> TemplateVector;
-
-  void ParseInput(const Value& value, Err* err);
-
-  // Parses a template string and adds it to the templates_ list.
-  void ParseOneTemplateString(const std::string& str);
-
-  TemplateVector templates_;
-
-  // The corresponding value is set to true if the given subrange type is
-  // required. This allows us to precompute these types whem applying them
-  // to a given source file.
-  bool types_required_[Subrange::NUM_TYPES];
-
-  DISALLOW_COPY_AND_ASSIGN(FileTemplate);
-};
-
-#endif  // TOOLS_GN_FILE_TEMPLATE_H_