language.h

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/*
 * This file is part of LibCSS.
 * Licensed under the MIT License,
 *                http://www.opensource.org/licenses/mit-license.php
 * Copyright 2008 John-Mark Bell <jmb@netsurf-browser.org>
 */
 
#ifndef css_css__parse_language_h_
#define css_css__parse_language_h_
 
#include <parserutils/utils/stack.h>
#include <parserutils/utils/vector.h>
 
#include <libcss/functypes.h>
#include <libcss/types.h>
 
#include "lex/lex.h"
#include "parse/parse.h"
#include "parse/propstrings.h"
 
typedef struct css_namespace {
        lwc_string *prefix;             
        lwc_string *uri;                
} css_namespace;
 
typedef struct css_language {
        css_stylesheet *sheet;          
#define STACK_CHUNK 32
        parserutils_stack *context;     
        enum {
                CHARSET_PERMITTED,
                IMPORT_PERMITTED,
                NAMESPACE_PERMITTED,
                HAD_RULE
        } state;                        
        lwc_string **strings;
 
        lwc_string *default_namespace;  
        css_namespace *namespaces;      
        uint32_t num_namespaces;        
} css_language;
 
css_error css__language_create(css_stylesheet *sheet, css_parser *parser,
                void **language);
css_error css__language_destroy(css_language *language);
 
/******************************************************************************
 * Helper functions                                                           *
 ******************************************************************************/
 
static inline void consumeWhitespace(const parserutils_vector *vector, int32_t *ctx)
{
        const css_token *token = NULL;
 
        while ((token = parserutils_vector_peek(vector, *ctx)) != NULL &&
                        token->type == CSS_TOKEN_S)
                parserutils_vector_iterate(vector, ctx);
}
 
static inline bool tokenIsChar(const css_token *token, uint8_t c)
{
        bool result = false;
 
        if (token != NULL && token->type == CSS_TOKEN_CHAR &&
                        lwc_string_length(token->idata) == 1) {
                char d = lwc_string_data(token->idata)[0];
 
                /* Ensure lowercase comparison */
                if ('A' <= d && d <= 'Z')
                        d += 'a' - 'A';
 
                result = (d == c);
        }
 
        return result;
}
 
#endif