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- /*
- * Copyright (c) 2005 Magnus Lind.
- *
- * This software is provided 'as-is', without any express or implied warranty.
- * In no event will the authors be held liable for any damages arising from
- * the use of this software.
- *
- * Permission is granted to anyone to use this software, alter it and re-
- * distribute it freely for any non-commercial, non-profit purpose subject to
- * the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- * claim that you wrote the original software. If you use this software in a
- * product, an acknowledgment in the product documentation would be
- * appreciated but is not required.
- *
- * 2. Altered source versions must be plainly marked as such, and must not
- * be misrepresented as being the original software.
- *
- * 3. This notice may not be removed or altered from any distribution.
- *
- * 4. The names of this software and/or it's copyright holders may not be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- */
-
- #include "expr.h"
- #include "chnkpool.h"
- #include "log.h"
-
- #include <stdlib.h>
-
-
- static struct chunkpool s_expr_pool[1];
-
- void expr_init()
- {
- chunkpool_init(s_expr_pool, sizeof(struct expr));
- }
-
- void expr_free()
- {
- chunkpool_free(s_expr_pool);
- }
-
- void expr_dump(int level, struct expr *e)
- {
- switch(e->expr_op)
- {
- case SYMBOL:
- LOG(level, ("expr 0x%08X symref %s\n", (u32)e, e->type.symref));
- break;
- case NUMBER:
- LOG(level, ("expr 0x%08X number %d\n", (u32)e, e->type.number));
- break;
- case vNEG:
- LOG(level, ("expr 0x%08X unary op %d, referring to 0x%08X\n",
- (u32)e, e->expr_op, (u32)e->type.arg1));
- case LNOT:
- LOG(level, ("expr 0x%08X unary op %d, referring to 0x%08X\n",
- (u32)e, e->expr_op, (u32)e->type.arg1));
- break;
- default:
- LOG(level, ("expr 0x%08X binary op %d, arg1 0x%08X, arg2 0x%08X\n",
- (u32)e, e->expr_op, (u32)e->type.arg1, (u32)e->expr_arg2));
-
- }
- }
-
- struct expr *new_expr_op1(i16 op, struct expr *arg)
- {
- struct expr *val;
-
- if(op != vNEG && op != LNOT)
- {
- /* error, invalid unary operator */
- LOG(LOG_ERROR, ("%d not allowed as unary operator\n", op));
- exit(1);
- }
-
- val = chunkpool_malloc(s_expr_pool);
- val->expr_op = op;
- val->type.arg1 = arg;
-
- expr_dump(LOG_DEBUG, val);
-
- return val;
- }
-
- struct expr *new_expr_op2(i16 op, struct expr *arg1, struct expr *arg2)
- {
- struct expr *val;
-
- if(op == vNEG ||
- op == LNOT ||
- op == NUMBER ||
- op == SYMBOL)
- {
- /* error, invalid binary operator */
- printf("op %d, vNEG %d, NUMBER %d, SYMBOL %d\n", op, vNEG, NUMBER, SYMBOL);
- LOG(LOG_ERROR, ("%d not allowed as binary operator\n", op));
- exit(1);
- }
-
- val = chunkpool_malloc(s_expr_pool);
- val->expr_op = op;
- val->type.arg1 = arg1;
- val->expr_arg2 = arg2;
-
- expr_dump(LOG_DEBUG, val);
-
- return val;
- }
-
- struct expr *new_expr_symref(const char *symbol)
- {
- struct expr *val;
-
- val = chunkpool_malloc(s_expr_pool);
- val->expr_op = SYMBOL;
- val->type.symref = symbol;
-
- expr_dump(LOG_DEBUG, val);
-
- return val;
- }
-
- struct expr *new_expr_number(i32 number)
- {
- struct expr *val;
-
- LOG(LOG_DEBUG, ("creating new number %d\n", number));
-
- val = chunkpool_malloc(s_expr_pool);
- val->expr_op = NUMBER;
- val->type.number = number;
-
- expr_dump(LOG_DEBUG, val);
-
- return val;
- }
-