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/* Copyright (C) 1996, 1997, 1998 Aladdin Enterprises. All rights
reserved. Unauthorized use, copying, and/or distribution
prohibited. */
/* pcparse.h */
/* Interface and definitions for PCL5 parser */
#ifndef pcparse_INCLUDED
# define pcparse_INCLUDED
#include "gsmemory.h"
#include "pcommand.h"
/* Define the lexical state of the scanner. */
typedef enum {
scanning_none,
scanning_parameter,
scanning_display, /* display_functions mode */
scanning_data /* data following a command */
} pcl_scan_type_t;
/* Define the state of the parser. */
typedef struct pcl_parser_state_s {
/* Internal state */
pcl_scan_type_t scan_type;
pcl_args_t args;
double scale; /* for accumulating floating numbers */
byte param_class, param_group; /* for parameterized commands */
uint data_pos; /* for data crossing buffer boundaries */
} pcl_parser_state_t;
#define pcl_parser_init_inline(pst)\
((pst)->scan_type = scanning_none, (pst)->args.data = 0)
/* Define the prefix of a macro definition. */
typedef struct pcl_macro_s {
pcl_entity_common;
} pcl_macro_t;
/* ---------------- Procedural interface ---------------- */
/* Allocate a parser state. */
pcl_parser_state_t *pcl_process_alloc(P1(gs_memory_t *memory));
/* Initialize the PCL parser. */
void pcl_process_init(P1(pcl_parser_state_t *pst));
/* Process a buffer of PCL commands. */
int pcl_process(P3(pcl_parser_state_t *pst, pcl_state_t *pcs,
stream_cursor_read *pr));
/* Execute a macro (in pcmacros.c). */
int pcl_execute_macro(P5(const pcl_macro_t *pmac, pcl_state_t *pcs,
pcl_copy_operation_t before, pcl_reset_type_t reset,
pcl_copy_operation_t after));
#endif /* pcparse_INCLUDED */
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