9f4ee9e75e
* BUG: The Scripting example was fixed. [INTERPRETER] * NEW: The error management was redesigned. [GB.DB] * NEW: Database driver can declare a set of character that are allowed in a database name. [GB.DB.SQLITE2] * NEW: '.' is allowed in database names now. [GB.DB.SQLITE3] * NEW: '.' is allowed in database names now. git-svn-id: svn://localhost/gambas/trunk@1038 867c0c6c-44f3-4631-809d-bfa615b0a4ec
141 lines
2.7 KiB
C
141 lines
2.7 KiB
C
/***************************************************************************
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eval.c
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Expression evaluator
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(c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>
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This program 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 1, or (at your option)
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any later version.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#define __GBX_EVAL_C
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#include "gb_common.h"
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#include "gb_array.h"
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#include "gbx_string.h"
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#include "gbx_class.h"
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#include "gbx_exec.h"
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#include "gbx_eval.h"
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#include "gbx_c_collection.h"
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#include "gbx_api.h"
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bool EVAL_debug = FALSE;
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static EXPRESSION *EVAL;
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static void EVAL_enter()
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{
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STACK_push_frame(&EXEC_current);
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STACK_check(EVAL->func.stack_usage);
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BP = SP;
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PP = SP;
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FP = &EVAL->func;
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PC = EVAL->func.code;
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OP = NULL;
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CP = &EVAL->exec_class;
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//AP = ARCH_from_class(CP);
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EP = NULL;
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EC = NULL;
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RP->type = T_VOID;
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}
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static bool EVAL_exec()
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{
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bool debug = EXEC_debug;
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STACK_push_frame(&EXEC_current);
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EXEC_debug = FALSE;
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PC = NULL;
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EVAL_enter();
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ERROR_clear();
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TRY
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{
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EXEC_loop();
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TEMP = *RP;
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/*RET.type = T_VOID;*/
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UNBORROW(&TEMP);
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STACK_pop_frame(&EXEC_current);
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}
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CATCH
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{
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STACK_pop_frame(&EXEC_current);
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STACK_pop_frame(&EXEC_current);
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}
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END_TRY
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//AP = ARCH_from_class(CP);
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EXEC_debug = debug;
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return (ERROR_current->info.code != 0);
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}
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bool EVAL_expression(EXPRESSION *expr, EVAL_FUNCTION func)
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{
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int i;
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EVAL_SYMBOL *sym;
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/*HASH_TABLE *hash_table;
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char *name;
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CCOL_ENUM enum_state;*/
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EVAL = expr;
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#ifdef DEBUG
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printf("EVAL: %s\n", EVAL->source);
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#endif
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STACK_check(EVAL->nvar);
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for (i = 0; i < EVAL->nvar; i++)
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{
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SP->type = T_VARIANT;
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SP->_variant.vtype = T_NULL;
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sym = (EVAL_SYMBOL *)TABLE_get_symbol(EVAL->table, EVAL->var[EVAL->nvar - i - 1]);
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if ((*func)(sym->sym.name, sym->sym.len, (GB_VARIANT *)SP))
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{
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GB_Error("Unknown symbol");
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/* ?? La pile est elle bien lib<69><62> */
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return TRUE;
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}
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/*VALUE_read(SP, &value, T_VARIANT);*/
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BORROW(SP);
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SP++;
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}
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/*EXEC_function(&exec, EVAL->nvar);*/
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return EVAL_exec();
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}
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