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- #include <windows.h>
- #include <crtdbg.h>
- #include "MyMath.h"
- #include "Math.h"
-
- unsigned int g_stringsize;
- stack_t **g_stacktop;
- char *g_variables;
-
- #ifdef _DEBUG_LEAKS
-
- int blocksnum = 0;
- HGLOBAL blocks[100000];
-
- HGLOBAL watchGlobalAlloc(UINT Flags, UINT size)
- {
- HGLOBAL block = GlobalAlloc(Flags, size);
- blocks[blocksnum++] = block;
- return block;
- }
-
- void watchGlobalFree(HGLOBAL block)
- {
- for (int i = 0; i < blocksnum; i++)
- if (blocks[i] == block) blocks[i] = NULL;
- GlobalFree(block);
- }
-
- void watchGlobal()
- {
- for (int i = 0; i < blocksnum; i++)
- if (blocks[i] != NULL)
- {
- _RPT2(_CRT_WARN, "Memory leak %d at %8X\n", i, blocks[i]);
- }
- }
-
- #endif
-
- // utility functions (not required but often useful)
- int popstring(char *str)
- {
- stack_t *th;
- if (!g_stacktop || !*g_stacktop) return 1;
- th=(*g_stacktop);
- lstrcpy(str,th->text);
- *g_stacktop = th->next;
- dbgGlobalFree((HGLOBAL)th);
- return 0;
- }
-
- void pushstring(char *str)
- {
- stack_t *th;
- if (!g_stacktop) return;
- th=(stack_t*)dbgGlobalAlloc(GPTR,sizeof(stack_t)+g_stringsize);
- lstrcpyn(th->text,str,g_stringsize);
- th->next=*g_stacktop;
- *g_stacktop=th;
- }
-
- char *getuservariable(int varnum)
- {
- if (varnum < 0 || varnum >= __INST_LAST) return NULL;
- return g_variables+varnum*g_stringsize;
- }
-
- void setuservariable(int varnum, char *var)
- {
- if (var != NULL && varnum >= 0 && varnum < __INST_LAST)
- lstrcpy(g_variables + varnum*g_stringsize, var);
- }
-
- char *AllocString()
- {
- return (char*) dbgGlobalAlloc(GPTR,g_stringsize);
- }
-
- ExpressionItem *AllocItem()
- {
- ExpressionItem *item = (ExpressionItem*)dbgGlobalAlloc(GPTR,sizeof(ExpressionItem));
- item->next = NULL;
- item->type = IT_CONST | ITC_INT;
- item->param1 = item->param2 = 0;
- return item;
- }
-
- ExpressionItem *AllocArray(int s)
- {
- int size = DEFAULT_ARRAY_SIZE;
- while (s > size) size*=2;
-
- ExpressionItem *ai = (ExpressionItem*)dbgGlobalAlloc(GPTR,sizeof(ExpressionItem));
- ai->type = IT_CONST | ITC_ARRAY;
- ai->param1 = (EIPARAM) dbgGlobalAlloc(GPTR, sizeof(ArrayDesc));
-
- ArrayDesc *ad = *((ArrayDesc**)&(ai->param1));
- // initialize and clear the array memory
- ad->array = (ExpressionItem**) dbgGlobalAlloc(GPTR, size*sizeof(ExpressionItem*));
- ad->size = size;
- ad->count = 0;
- ad->references = 1;
- return ai;
- }
-
- ExpressionItem *CopyItem(ExpressionItem *citem, int NeedConst)
- {
- if (!citem) return NULL;
- ExpressionItem *item = NULL;
- if ((NeedConst) && ((citem->type & ITEMTYPE) != IT_CONST))
- {
- // in case of non constant expression - flat it to const
- RunTree(citem, item, RTO_NEEDCONST | ITC_INT | ITC_STRING | ITC_FLOAT | ITC_ARRAY);
- if (item) return item;
- }
-
- item = AllocItem();
- item->type = citem->type;
- if ((item->type & (ITEMTYPE | ITEMSUBTYPE)) == (IT_CONST | ITC_STRING))
- {
- item->param1 = (EIPARAM) AllocString();
- lstrcpy((LPSTR) item->param1, (LPSTR) citem->param1);
- } else if (((item->type & (ITEMTYPE | ITEMSUBTYPE)) == (IT_CONST | ITC_ARRAY))
- ||
- ((item->type & (ITEMTYPE | ITEMSUBTYPE)) == (IT_VARIABLE | ITV_ARRITEM)))
- {
- item->param1 = citem->param1;
- ArrayDesc *ad = (ArrayDesc*) item->param1;
- ad->references++;
- }
- else item->param1 = citem->param1;
- item->param2 = citem->param2;
- item->next = NULL;
- return item;
- }