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/*
* Copyright (c) 1987, 1989 University of Maryland
* Department of Computer Science. All rights reserved.
* Permission to copy for any purpose is hereby granted
* so long as this copyright notice remains intact.
*/
/*
* GF classification codes
*/
/*
* Predicate for simple paint commands. This is presumably the most
* common GF operation; it may be profitable to check for this before
* switching out on the command type.
*/
#define GF_IsPaint(c) ((c) < 64)
/*
* Symbolic names for command `types', as returned by the macro
* GT_TYPE(int c).
*/
#define GT_PAINT0 0 /* paint without parameter */
#define GT_PAINT 1 /* paint with parameter */
#define GT_BOC 2 /* long BOC */
#define GT_BOC1 3 /* short BOC */
#define GT_EOC 4 /* EOC */
#define GT_SKIP0 5 /* parameterless SKIP */
#define GT_SKIP 6 /* parmeterised SKIP */
#define GT_NEW_ROW 7 /* NEW_ROW_n */
#define GT_XXX 8 /* XXXn */
#define GT_YYY 9 /* YYY */
#define GT_NOP 10 /* no op */
#define GT_CHAR_LOC 11 /* CHAR_LOC */
#define GT_CHAR_LOC0 12 /* abbreviated CHAR_LOC */
#define GT_PRE 13
#define GT_POST 14
#define GT_POSTPOST 15
#define GT_UNDEF 16
/*
* Symbolic names for parameter lengths, obtained via the macro
* GT_OpLen(int c).
*/
#define GPL_NONE 0 /* no parameter, or too complex */
#define GPL_UNS1 1 /* one one-byte parameter in 0..255 */
#define GPL_UNS2 2 /* one two-byte parameter in 0..65535 */
#define GPL_UNS3 3 /* one three-byte parameter in 0..16777215 */
#define GPL_SGN4 4 /* one four-byte signed parameter */
/*
* there are no unsigned four byte parameters, and no shorter signed
* parameters
*/
#define GF_OpLen(code) (gf_oplen[code])
#define GF_TYPE(code) (gf_gt[code])
extern char gf_oplen[];
extern char gf_gt[];
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