css_parser.h

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#ifndef LH_CSS_PARSER_H
#define LH_CSS_PARSER_H
 
#include "css_tokenizer.h"
#include "stylesheet.h"
 
namespace litehtml
{
 
class css_parser
{
    css_token_vector m_tokens;
    int m_index = 0;
 
    css_token next_token();
    css_token peek_token();
 
public:
    css_parser() {}
    css_parser(const css_token_vector& tokens) : m_tokens(tokens) {}
 
    static raw_rule::vector parse_stylesheet(const string& input,           bool top_level);
    static raw_rule::vector parse_stylesheet(const css_token_vector& input, bool top_level);
    raw_rule::vector        consume_list_of_rules(bool top_level);
    raw_rule::ptr           consume_qualified_rule();
    raw_rule::ptr           consume_at_rule();
    css_token               consume_simple_block(char opening_bracket);
    css_token               consume_component_value();
    css_token               consume_function(const string& name);
 
    raw_declaration         consume_declaration();
    void                    consume_style_block_contents(/*out*/ raw_declaration::vector& decls, /*out*/ raw_rule::vector& rules);
};
 
using keep_whitespace_fn = std::function<bool (const css_token& left, const css_token& right)>;
void remove_whitespace(css_token_vector& tokens, keep_whitespace_fn keep_whitespace = 0);
 
enum {
    f_componentize = 1,
    f_remove_whitespace = 2
};
template<class Input>
css_token_vector normalize(Input input, int options = 0, keep_whitespace_fn keep_whitespace = 0);
 
vector<css_token_vector> parse_comma_separated_list(const css_token_vector& tokens);
bool is_declaration_value(const css_token_vector& tokens, int index = 0);
bool is_any_value(const css_token_vector& tokens);
bool skip_whitespace(const css_token_vector& tokens, int& index);
 
} // namespace litehtml
 
#endif // LH_CSS_PARSER_H