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/*
* This file is part of LibCSS.
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2016 John-Mark Bell <jmb@netsurf-browser.org>
*/
#ifndef css_parse_mq_h_
#define css_parse_mq_h_
#include <parserutils/utils/vector.h>
#include "parse/language.h"
typedef struct {
enum {
CSS_MQ_VALUE_TYPE_NUM,
CSS_MQ_VALUE_TYPE_DIM,
CSS_MQ_VALUE_TYPE_IDENT,
CSS_MQ_VALUE_TYPE_RATIO
} type;
union {
css_fixed num_or_ratio; /* Where ratio is the result of a/b */
struct {
css_fixed len;
uint32_t unit;
} dim;
lwc_string *ident;
} data;
} css_mq_value;
/*
* "name : value" is encoded as "name = value"
* "name" is encoded by setting the operator to "bool"
* "value op name" is encoded verbatim (with op2 set to "unused")
* "name op value" inverts the operator to encode (i.e < becomes >=) (and sets op2 to "unused")
* "value op name op value" is encoded using op2 and value2
*/
typedef enum {
CSS_MQ_FEATURE_OP_BOOL, /* op only */
CSS_MQ_FEATURE_OP_UNUSED = CSS_MQ_FEATURE_OP_BOOL, /* op2 only */
CSS_MQ_FEATURE_OP_LT,
CSS_MQ_FEATURE_OP_LTE,
CSS_MQ_FEATURE_OP_EQ, /* op only */
CSS_MQ_FEATURE_OP_GTE,
CSS_MQ_FEATURE_OP_GT
} css_mq_feature_op;
typedef struct {
lwc_string *name;
css_mq_feature_op op;
css_mq_feature_op op2;
css_mq_value value;
css_mq_value value2;
} css_mq_feature;
typedef struct css_mq_cond_or_feature css_mq_cond_or_feature;
typedef struct {
uint32_t nparts;
css_mq_cond_or_feature **parts;
} css_mq_cond_parts;
typedef struct {
uint32_t negate : 1, /* set if "not" */
op : 1; /* clear if "and", set if "or" */
css_mq_cond_parts *parts;
} css_mq_cond;
struct css_mq_cond_or_feature {
enum {
CSS_MQ_FEATURE,
CSS_MQ_COND
} type;
union {
css_mq_cond *cond;
css_mq_feature *feat;
} data;
};
typedef struct css_mq_query {
struct css_mq_query *next;
uint32_t negate_type : 1; /* set if "not type" */
uint64_t type; /* or NULL */
css_mq_cond *cond;
} css_mq_query;
css_error css__mq_parse_media_list(lwc_string **strings,
const parserutils_vector *vector, int *ctx,
css_mq_query **media);
void css__mq_query_destroy(css_mq_query *media);
#endif
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