calc.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 2024 Daniel Silverstone <dsilvers@netsurf-browser.org>
 */
 
#ifndef css_select_calc_h_
#define css_select_calc_h_
 
#include <stdint.h>
 
#include "bytecode/bytecode.h"
#include "libcss/errors.h"
#include "libcss/unit.h"
 
typedef struct {
        unit unit;
        css_fixed value;
} css_calculator_stack_entry;
 
typedef struct {
        uint32_t refcount;
        css_calculator_stack_entry *stack;
        size_t stack_alloc;
        size_t stack_ptr;
#ifndef NDEBUG
        lwc_string *canary;
#endif
} css_calculator;
 
css_error css_calculator_create(css_calculator **out);
 
css_calculator *css_calculator_ref(css_calculator *calc);
 
void css_calculator_unref(css_calculator *calc);
 
css_error css_calculator_calculate(css_calculator *calc,
                                   const css_unit_ctx *unit_ctx,
                                   int32_t available, lwc_string *expr,
                                   const css_computed_style *style,
                                   css_unit *unit_out, css_fixed *value_out);
 
#endif /* css_select_calc_h_ */