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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_bytecode_bytecode_h_
#define css_bytecode_bytecode_h_
#include <inttypes.h>
#include <stdio.h>
#include <libcss/types.h>
#include <libcss/properties.h>
typedef uint32_t css_code_t;
typedef enum css_properties_e opcode_t;
enum flag_value {
FLAG_VALUE__NONE = 0,
FLAG_VALUE_INHERIT = 1,
FLAG_VALUE_INITIAL = 2,
FLAG_VALUE_REVERT = 3,
FLAG_VALUE_UNSET = 4,
};
enum flag {
FLAG_IMPORTANT = (1 << 0),
FLAG_INHERIT = (FLAG_VALUE_INHERIT << 1),
FLAG_INITIAL = (FLAG_VALUE_INITIAL << 1),
FLAG_REVERT = (FLAG_VALUE_REVERT << 1),
FLAG_UNSET = (FLAG_VALUE_UNSET << 1),
};
typedef enum unit {
UNIT_LENGTH = (1u << 8),
UNIT_PX = (1u << 8) + 0,
UNIT_EX = (1u << 8) + 1,
UNIT_EM = (1u << 8) + 2,
UNIT_IN = (1u << 8) + 3,
UNIT_CM = (1u << 8) + 4,
UNIT_MM = (1u << 8) + 5,
UNIT_PT = (1u << 8) + 6,
UNIT_PC = (1u << 8) + 7,
UNIT_CH = (1u << 8) + 8,
UNIT_REM = (1u << 8) + 9,
UNIT_LH = (1u << 8) + 10,
UNIT_VH = (1u << 8) + 11,
UNIT_VW = (1u << 8) + 12,
UNIT_VI = (1u << 8) + 13,
UNIT_VB = (1u << 8) + 14,
UNIT_VMIN = (1u << 8) + 15,
UNIT_VMAX = (1u << 8) + 16,
UNIT_Q = (1u << 8) + 17,
UNIT_PCT = (1 << 9),
UNIT_ANGLE = (1 << 10),
UNIT_DEG = (1 << 10) + 0,
UNIT_GRAD = (1 << 10) + 1,
UNIT_RAD = (1 << 10) + 2,
UNIT_TURN = (1 << 10) + 3,
UNIT_TIME = (1 << 11),
UNIT_MS = (1 << 11) + 0,
UNIT_S = (1 << 11) + 1,
UNIT_FREQ = (1 << 12),
UNIT_HZ = (1 << 12) + 0,
UNIT_KHZ = (1 << 12) + 1,
UNIT_RESOLUTION = (1 << 13),
UNIT_DPI = (1 << 13) + 0,
UNIT_DPCM = (1 << 13) + 1,
UNIT_DPPX = (1 << 13) + 2,
} unit;
typedef uint32_t colour;
typedef enum shape {
SHAPE_RECT = 0
} shape;
static inline css_code_t buildOPV(opcode_t opcode, uint8_t flags, uint16_t value)
{
return (opcode & 0x3ff) | (flags << 10) | ((value & 0x3fff) << 18);
}
static inline opcode_t getOpcode(css_code_t OPV)
{
return (OPV & 0x3ff);
}
static inline uint8_t getFlags(css_code_t OPV)
{
return ((OPV >> 10) & 0xff);
}
static inline uint16_t getValue(css_code_t OPV)
{
return (OPV >> 18);
}
static inline bool isImportant(css_code_t OPV)
{
return getFlags(OPV) & FLAG_IMPORTANT;
}
static inline enum flag_value getFlagValue(css_code_t OPV)
{
return (getFlags(OPV) >> 1) & 0x7;
}
static inline bool hasFlagValue(css_code_t OPV)
{
return getFlagValue(OPV) != FLAG_VALUE__NONE;
}
static inline bool isInherit(css_code_t OPV)
{
return getFlagValue(OPV) == FLAG_VALUE_INHERIT;
}
#endif
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