87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/* Copyright (C) 2016 Jeremiah Orians
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* This file is part of stage0.
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*
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* stage0 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* stage0 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with stage0. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "gcc_req.h"
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//CONSTANT FREE 1
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#define FREE 1
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//CONSTANT MARKED 2
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#define MARKED 2
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//CONSTANT INT 4
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#define INT 4
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//CONSTANT SYM 8
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#define SYM 8
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//CONSTANT CONS 16
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#define CONS 16
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//CONSTANT PROC 32
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#define PROC 32
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//CONSTANT PRIMOP 64
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#define PRIMOP 64
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//CONSTANT CHAR 128
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#define CHAR 128
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//CONSTANT STRING 256
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#define STRING 256
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// CONSTANT FALSE 0
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#define FALSE 0
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// CONSTANT TRUE 1
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#define TRUE 1
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struct cell
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{
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int type;
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union
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{
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struct cell* car;
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int value;
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char* string;
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FUNCTION* function;
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};
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struct cell* cdr;
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struct cell* env;
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};
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// CONSTANT MAX_STRING 4096
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#define MAX_STRING 4096
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/* Common functions */
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struct cell* make_cons(struct cell* a, struct cell* b);
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int numerate_string(char *a);
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char* numerate_number(int a);
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int match(char* a, char* b);
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/* Global objects */
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struct cell *all_symbols;
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struct cell *top_env;
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struct cell *nil;
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struct cell *tee;
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struct cell *quote;
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struct cell *s_if;
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struct cell *s_lambda;
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struct cell *s_define;
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struct cell *s_setb;
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struct cell *s_cond;
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struct cell *s_begin;
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struct cell *s_let;
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struct cell *s_while;
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struct cell *current;
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FILE* input;
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FILE* file_output;
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FILE* console_output;
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int echo;
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int left_to_take;
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