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// 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_
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