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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6242 d0543943-73ff-0310-b7d9-9358b9ac24b2
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@@ -1,237 +1,237 @@
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/*
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File: exprobj.c
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Auth: Brian Allen Vanderburg II
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Date: Tuesday, April 29, 2003
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Desc: Functions for the exprObj type
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This file is part of ExprEval.
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*/
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/* Includes */
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#include "exprincl.h"
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#include "exprpriv.h"
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#include "exprmem.h"
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/* Internal functions */
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static void exprFreeNodeData(exprNode *node);
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/* Function to create an expression object */
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int exprCreate(exprObj **obj, exprFuncList *flist, exprValList *vlist, exprValList *clist,
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exprBreakFuncType breaker, void *userdata)
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{
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exprObj *tmp;
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/* Allocate memory for the object */
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tmp = exprAllocMem(sizeof(exprObj));
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if(tmp == NULL)
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return EXPR_ERROR_MEMORY;
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/* Assign data */
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tmp->flist = flist;
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tmp->vlist = vlist;
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tmp->clist = clist;
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tmp->breakerfunc = breaker;
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tmp->userdata = userdata;
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tmp->breakcount = 100000; /* Default breaker count setting */
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tmp->breakcur = 0;
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/* Update pointer */
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*obj = tmp;
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return EXPR_ERROR_NOERROR;
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}
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/* Free the expression */
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int exprFree(exprObj *obj)
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{
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if(obj == NULL)
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return EXPR_ERROR_NOERROR;
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/* First free the node data */
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exprFreeNodeData(obj->headnode);
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exprFreeMem(obj->headnode);
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/* Free ourself */
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exprFreeMem(obj);
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return EXPR_ERROR_NOERROR;
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}
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/* Clear expression, keep lists, etc */
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int exprClear(exprObj *obj)
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{
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if(obj == NULL)
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return EXPR_ERROR_NOERROR;
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/* Free the node data only, keep function, variable, constant lists */
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exprFreeNodeData(obj->headnode);
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exprFreeMem(obj->headnode);
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obj->headnode = NULL;
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obj->parsedbad = 0;
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obj->parsedgood = 0;
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return EXPR_ERROR_NOERROR;
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}
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/* Get functions to get information about the expression object */
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/* Get the function list */
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exprFuncList *exprGetFuncList(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->flist;
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}
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/* Get the variable list */
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exprValList *exprGetVarList(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->vlist;
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}
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/* Get the constant list */
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exprValList *exprGetConstList(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->clist;
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}
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/* Get the breaker function */
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exprBreakFuncType exprGetBreakFunc(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->breakerfunc;
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}
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/* Check for break status */
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int exprGetBreakResult(exprObj *obj)
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{
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if(obj == NULL)
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return 0;
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if(obj->breakerfunc == NULL)
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return 0;
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return (*(obj->breakerfunc))(obj);
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}
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/* Get the user data */
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void *exprGetUserData(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->userdata;
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}
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/* Set functions to set certain data */
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/* Set user data */
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void exprSetUserData(exprObj *obj, void *userdata)
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{
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if(obj)
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obj->userdata = userdata;
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}
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/* Set breaker count */
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void exprSetBreakCount(exprObj *obj, int count)
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{
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if(obj)
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{
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/* If count is negative, make it positive */
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if(count < 0)
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count = -count;
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obj->breakcount = count;
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/* Make sure the current value is not bigger than count */
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if(obj->breakcur > count)
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obj->breakcur = count;
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}
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}
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/* Get error position */
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void exprGetErrorPosition(exprObj *obj, int *start, int *end)
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{
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if(obj)
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{
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if(start)
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*start = obj->starterr;
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if(end)
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*end = obj->enderr;
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}
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}
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/* This function will free a node's data */
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static void exprFreeNodeData(exprNode *node)
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{
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int pos;
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if(node == NULL)
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return;
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/* free data based on type */
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switch(node->type)
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{
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case EXPR_NODETYPE_ADD:
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case EXPR_NODETYPE_SUBTRACT:
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case EXPR_NODETYPE_MULTIPLY:
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case EXPR_NODETYPE_DIVIDE:
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case EXPR_NODETYPE_EXPONENT:
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case EXPR_NODETYPE_NEGATE:
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case EXPR_NODETYPE_MULTI:
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/* Free operation data */
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if(node->data.oper.nodes)
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{
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for(pos = 0; pos < node->data.oper.nodecount; pos++)
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exprFreeNodeData(&(node->data.oper.nodes[pos]));
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exprFreeMem(node->data.oper.nodes);
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}
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break;
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case EXPR_NODETYPE_VALUE:
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/* Nothing to free for value */
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break;
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case EXPR_NODETYPE_VARIABLE:
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/* Nothing to free for variable */
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break;
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case EXPR_NODETYPE_FUNCTION:
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/* Free data of each subnode */
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if(node->data.function.nodes)
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{
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for(pos = 0; pos < node->data.function.nodecount; pos++)
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exprFreeNodeData(&(node->data.function.nodes[pos]));
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/* Free the subnode array */
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exprFreeMem(node->data.function.nodes);
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}
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/* Free reference variable list */
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if(node->data.function.refs)
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exprFreeMem(node->data.function.refs);
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break;
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case EXPR_NODETYPE_ASSIGN:
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/* Free subnode data */
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if(node->data.assign.node)
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{
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exprFreeNodeData(node->data.assign.node);
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/* Free the subnode */
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exprFreeMem(node->data.assign.node);
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}
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break;
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}
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}
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/*
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File: exprobj.c
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Auth: Brian Allen Vanderburg II
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Date: Tuesday, April 29, 2003
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Desc: Functions for the exprObj type
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This file is part of ExprEval.
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*/
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/* Includes */
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#include "exprincl.h"
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#include "exprpriv.h"
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#include "exprmem.h"
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/* Internal functions */
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static void exprFreeNodeData(exprNode *node);
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/* Function to create an expression object */
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int exprCreate(exprObj **obj, exprFuncList *flist, exprValList *vlist, exprValList *clist,
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exprBreakFuncType breaker, void *userdata)
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{
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exprObj *tmp;
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/* Allocate memory for the object */
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tmp = exprAllocMem(sizeof(exprObj));
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if(tmp == NULL)
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return EXPR_ERROR_MEMORY;
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/* Assign data */
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tmp->flist = flist;
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tmp->vlist = vlist;
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tmp->clist = clist;
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tmp->breakerfunc = breaker;
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tmp->userdata = userdata;
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tmp->breakcount = 100000; /* Default breaker count setting */
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tmp->breakcur = 0;
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/* Update pointer */
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*obj = tmp;
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return EXPR_ERROR_NOERROR;
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}
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/* Free the expression */
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int exprFree(exprObj *obj)
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{
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if(obj == NULL)
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return EXPR_ERROR_NOERROR;
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/* First free the node data */
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exprFreeNodeData(obj->headnode);
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exprFreeMem(obj->headnode);
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/* Free ourself */
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exprFreeMem(obj);
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return EXPR_ERROR_NOERROR;
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}
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/* Clear expression, keep lists, etc */
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int exprClear(exprObj *obj)
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{
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if(obj == NULL)
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return EXPR_ERROR_NOERROR;
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/* Free the node data only, keep function, variable, constant lists */
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exprFreeNodeData(obj->headnode);
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exprFreeMem(obj->headnode);
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obj->headnode = NULL;
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obj->parsedbad = 0;
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obj->parsedgood = 0;
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return EXPR_ERROR_NOERROR;
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}
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/* Get functions to get information about the expression object */
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/* Get the function list */
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exprFuncList *exprGetFuncList(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->flist;
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}
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/* Get the variable list */
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exprValList *exprGetVarList(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->vlist;
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}
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/* Get the constant list */
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exprValList *exprGetConstList(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->clist;
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}
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/* Get the breaker function */
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exprBreakFuncType exprGetBreakFunc(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->breakerfunc;
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}
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/* Check for break status */
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int exprGetBreakResult(exprObj *obj)
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{
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if(obj == NULL)
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return 0;
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if(obj->breakerfunc == NULL)
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return 0;
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return (*(obj->breakerfunc))(obj);
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}
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/* Get the user data */
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void *exprGetUserData(exprObj *obj)
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{
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return (obj == NULL) ? NULL : obj->userdata;
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}
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/* Set functions to set certain data */
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/* Set user data */
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void exprSetUserData(exprObj *obj, void *userdata)
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{
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if(obj)
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obj->userdata = userdata;
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}
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/* Set breaker count */
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void exprSetBreakCount(exprObj *obj, int count)
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{
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if(obj)
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{
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/* If count is negative, make it positive */
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if(count < 0)
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count = -count;
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obj->breakcount = count;
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/* Make sure the current value is not bigger than count */
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if(obj->breakcur > count)
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obj->breakcur = count;
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}
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}
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/* Get error position */
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void exprGetErrorPosition(exprObj *obj, int *start, int *end)
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{
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if(obj)
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{
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if(start)
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*start = obj->starterr;
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if(end)
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*end = obj->enderr;
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}
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}
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/* This function will free a node's data */
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static void exprFreeNodeData(exprNode *node)
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{
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int pos;
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if(node == NULL)
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return;
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/* free data based on type */
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switch(node->type)
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{
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case EXPR_NODETYPE_ADD:
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case EXPR_NODETYPE_SUBTRACT:
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case EXPR_NODETYPE_MULTIPLY:
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case EXPR_NODETYPE_DIVIDE:
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case EXPR_NODETYPE_EXPONENT:
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case EXPR_NODETYPE_NEGATE:
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case EXPR_NODETYPE_MULTI:
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/* Free operation data */
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if(node->data.oper.nodes)
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{
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for(pos = 0; pos < node->data.oper.nodecount; pos++)
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exprFreeNodeData(&(node->data.oper.nodes[pos]));
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exprFreeMem(node->data.oper.nodes);
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}
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break;
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case EXPR_NODETYPE_VALUE:
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/* Nothing to free for value */
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break;
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case EXPR_NODETYPE_VARIABLE:
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/* Nothing to free for variable */
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break;
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case EXPR_NODETYPE_FUNCTION:
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/* Free data of each subnode */
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if(node->data.function.nodes)
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{
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for(pos = 0; pos < node->data.function.nodecount; pos++)
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exprFreeNodeData(&(node->data.function.nodes[pos]));
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/* Free the subnode array */
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exprFreeMem(node->data.function.nodes);
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}
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/* Free reference variable list */
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if(node->data.function.refs)
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exprFreeMem(node->data.function.refs);
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break;
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case EXPR_NODETYPE_ASSIGN:
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/* Free subnode data */
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if(node->data.assign.node)
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{
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exprFreeNodeData(node->data.assign.node);
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/* Free the subnode */
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exprFreeMem(node->data.assign.node);
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}
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break;
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}
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}
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