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// Copyright 2014 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_CSS_PARSER_PARSER_H_
#define COBALT_CSS_PARSER_PARSER_H_
#include <memory>
#include <string>
#include "base/callback.h"
#include "cobalt/cssom/css_parser.h"
namespace cobalt {
namespace css_parser {
class Parser : public cssom::CSSParser {
public:
enum SupportsMapToMeshFlag {
kSupportsMapToMesh,
// Additionally supports map-to-mesh on rectangular video.
kSupportsMapToMeshRectangular,
kDoesNotSupportMapToMesh,
};
// The parameter |supports_map_to_mesh| can be used to toggle parser support
// for the map-to-mesh CSS filter. If disabled, "filter: map-to-mesh(...)"
// will result in a parse error.
static std::unique_ptr<Parser> Create(
SupportsMapToMeshFlag supports_map_to_mesh = kSupportsMapToMesh);
~Parser();
scoped_refptr<cssom::CSSStyleSheet> ParseStyleSheet(
const std::string& input,
const base::SourceLocation& input_location) override;
scoped_refptr<cssom::CSSRule> ParseRule(
const std::string& input,
const base::SourceLocation& input_location) override;
scoped_refptr<cssom::CSSDeclaredStyleData> ParseStyleDeclarationList(
const std::string& input,
const base::SourceLocation& input_location) override;
scoped_refptr<cssom::CSSFontFaceDeclarationData> ParseFontFaceDeclarationList(
const std::string& input,
const base::SourceLocation& input_location) override;
scoped_refptr<cssom::PropertyValue> ParsePropertyValue(
const std::string& property_name, const std::string& property_value,
const base::SourceLocation& property_location) override;
void ParsePropertyIntoDeclarationData(
const std::string& property_name, const std::string& property_value,
const base::SourceLocation& property_location,
cssom::CSSDeclarationData* declaration_data) override;
scoped_refptr<cssom::MediaList> ParseMediaList(
const std::string& media_list,
const base::SourceLocation& input_location) override;
scoped_refptr<cssom::MediaQuery> ParseMediaQuery(
const std::string& media_query,
const base::SourceLocation& input_location) override;
private:
typedef base::Callback<void(const std::string& message)> OnMessageCallback;
enum MessageVerbosity {
// With message verbosity set to kShort, expect to see a one line message
// indicating the error/warning and that is it. This is useful for testing.
kShort,
// With message verbosity set to kVerbose, expect to see information such
// as the line that caused the error to be output, allong with an arrow
// pointing to where the error occurred on the line.
kVerbose,
};
Parser(const OnMessageCallback& on_warning_callback,
const OnMessageCallback& on_error_callback,
MessageVerbosity message_verbosity,
SupportsMapToMeshFlag supports_map_to_mesh);
const OnMessageCallback on_warning_callback_;
const OnMessageCallback on_error_callback_;
MessageVerbosity message_verbosity_;
SupportsMapToMeshFlag supports_map_to_mesh_;
friend class ParserImpl;
friend class ParserTestBase;
DISALLOW_COPY_AND_ASSIGN(Parser);
};
} // namespace css_parser
} // namespace cobalt
#endif // COBALT_CSS_PARSER_PARSER_H_