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StTeXsrc.zoo
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tokenstack.h
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1988-03-13
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/*
* @(#)tokenstack.h 2.6 EPA
*
* Copyright 1987,1988 Pat J Monardo
*
* Redistribution of this file is permitted through
* the specifications in the file COPYING.
*
*
*/
typedef struct
{
qword state_field;
qword index_field;
hword start_field;
hword loc_field;
hword limit_field;
hword name_field;
}
input;
global input cur_input;
global input input_stack[];
global ptr input_ptr;
global ptr max_in_stack;
#define state cur_input.state_field
#define index cur_input.index_field
#define start cur_input.start_field
#define loc cur_input.loc_field
#define limit cur_input.limit_field
#define name cur_input.name_field
#define MID_LINE 1
#define SKIP_BLANKS (2 + MAX_CHAR_CODE)
#define NEW_LINE (3 + MAX_CHAR_CODE + MAX_CHAR_CODE)
#define terminal_input (name == 0)
global alpha_file input_file[];
global ptr in_open;
global val line;
global val line_stack[];
#define cur_file input_file[index]
#define TOKEN_LIST 0
#define param_start limit
#define token_type index
#define PARAMETER 0
#define U_TEMPLATE 1
#define V_TEMPLATE 2
#define BACKED_UP 3
#define INSERTED 4
#define MACRO 5
#define OUTPUT_TEXT 6
#define EVERY_PAR_TEXT 7
#define EVERY_MATH_TEXT 8
#define EVERY_DISPLAY_TEXT 9
#define EVERY_HBOX_TEXT 10
#define EVERY_VBOX_TEXT 11
#define EVERY_JOB_TEXT 12
#define EVERY_CR_TEXT 13
#define MARK_TEXT 14
#define WRITE_TEXT 15
global ptr param_ptr;
global ptr param_stack[];
global ptr max_param_stack;
int runaway();
int show_context();
global val align_state;
global ptr base_ptr;
global ptr def_ref;
global ptr warning_index;
global int scanner_status;
#define SKIPPING 1
#define DEFINING 2
#define MATCHING 3
#define ALIGNING 4
#define ABSORBING 5
#define set_trick_count() \
{first_count = tally; \
trick_count = tally + 1 + ERROR_LINE - HALF_ERROR_LINE; \
if (trick_count < ERROR_LINE) \
trick_count = ERROR_LINE;}
#define magic_c() set_trick_count()
int push_input();
int pop_input();
int begin_token_list();
int end_token_list();
#define back_list(L) begin_token_list(L, BACKED_UP)
#define ins_list(L) begin_token_list(L, INSERTED)
int back_input();
int back_error();
int begin_file_reading();
int end_file_reading();
int clear_for_error_prompt();