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interpret.c
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interpret.c
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/**
* Predmet: IFJ / IAL
* Projekt: Implementace interpretu imperativniho jazyka IFJ13
* Tym: 099
* Varianta: a/2/I
* Soubor: interpret.c
* Autori: Vlcek Michael <[email protected]>
* Svacek Radim <[email protected]>
* Blanco Roman <[email protected]>
* Micka Vojtech <[email protected]>
* Wolfert Richard <[email protected]>
*/
#include <stdlib.h>
#include <string.h>
#include "interpret.h"
int
interpret (t_stItemV GlobSymbTable, tInstList * List)
{
tInstListItem *instItem; // polozka v seznamu instrukci
tInst Inst; // instrukce
listFirstActive (List); // nastaveni aktivity na prvni instrukci
int return_value_int;
int return_value_int1;
double return_value_double;
char *parameters;
char *string = NULL; // pro ulozeni vystupniho retezce
char *string1 = NULL; // pro ulozeni vystupniho retezce
t_stItemV ptrAdr1, ptrAdr2, ptrResult;
t_stStackV stack; // zasobnik (INST_CALL)
sInitV (&stack); // inicializace zasobniku
sPushV (&stack, GlobSymbTable, NULL, NULL);
while (1)
{
ptrAdr1 = NULL;
ptrAdr2 = NULL;
ptrResult = NULL;
// nacteni instrukce
instItem = listGetActive (List);
Inst = instItem->instruction;
switch (Inst.type)
{
case INST_BOOLVAL: // boolval()
ptrResult = stSearchV (&GlobSymbTable, "PAR1"); //Nacitanie parametru z globalnej tabulky
if ((return_value_int = boolval (ptrResult)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
} //Polozka pomocou, ktorej sa odovzda navratova hodnota
if (stInsertV
(&(stack->Content), "FunctionResult", type_boolean, 0, 0, NULL,
return_value_int) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_DOUBVAL: // doubleval()
ptrResult = stSearchV (&GlobSymbTable, "PAR1");
if (ptrResult == NULL)
{
sDispose (&stack);
return RET_ERR;
}
if ((return_value_double = doubleval (ptrResult)) == SEM_ERR_RETYPE)
{
sDispose (&stack);
return SEM_ERR_RETYPE;
}
if (stInsertV
(&(stack->Content), "FunctionResult", type_double, 0,
return_value_double, NULL, false) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_INTVAL: // intval()
ptrResult = stSearchV (&(GlobSymbTable), "PAR1");
if (ptrResult == NULL)
{
sDispose (&stack);
return RET_ERR;
}
return_value_int = intval (ptrResult);
if (stInsertV
(&(stack->Content), "FunctionResult", type_int,
return_value_int, 0, NULL, false) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_STRVAL: // strval()
ptrResult = stSearchV (&(GlobSymbTable), "PAR1");
if (strval (ptrResult, &string) != RET_OK)
{
sDispose (&stack);
return RET_ERR;
}
if (stInsertV
(&(stack->Content), "FunctionResult", type_string, 0, 0, string,
false) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_GETSTR: // get_string()
if ((return_value_int = get_string (&string)) != RET_OK)
{
sDispose (&stack);
return return_value_int;
}
if ((stInsertV
(&(stack->Content), "FunctionResult", type_string, 0, 0,
string, false)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_PUTSTR: // put_string()
return_value_int = 1;
//Neznamy pocet paratrov sa riesi nekonecnym cyklom,ktory
//nacitava hodnoty kym nenarazi na zarazku typ_end_par
while (1)
{ //Vygenerujeme nazov parametru
parameters = GenerateString (return_value_int);
if (parameters == NULL)
{
sDispose (&stack);
return RET_ERR;
}
return_value_int++; //najdeme polozku v tabulke
ptrAdr1 = stSearchV (&GlobSymbTable, parameters);
free (parameters);
//musime pretypovat?
if ((ptrAdr1->Content.Type) != type_string)
{
if (ptrAdr1->Content.Type == type_end_par)
{
if ((stInsertV
(&(stack->Content), "FunctionResult", type_int,
return_value_int - 2, 0, NULL, false)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
}
if (strval (ptrAdr1, &string) != RET_OK)
{
sDispose (&stack);
return RET_ERR;
}
printf ("%s", string); //VYpis pretypovaneho parametru
continue;
} // Vypis parametru, ktory nie je treba pretypovat
printf ("%s", ptrAdr1->Content.Data.sData);
}
break;
case INST_STRLEN: // strlen()
;
int length;
ptrAdr1 = stSearchV (&(GlobSymbTable), "PAR1");
if (strval (ptrAdr1, &string) != RET_OK)
{
sDispose (&stack);
return RET_ERR;
}
if ((length = strLen (string)) < RET_OK)
{
sDispose (&stack);
return length;
}
if ((stInsertV
(&(stack->Content), "FunctionResult", type_int, length, 0,
NULL, false)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_GETSUB: // get_substring()
ptrResult = stSearchV (&(GlobSymbTable), "PAR1");
if (strval (ptrResult, &string) != RET_OK)
{
sDispose (&stack);
return RET_ERR;
}
ptrAdr1 = stSearchV (&(GlobSymbTable), "PAR2");
if ((return_value_int = intval (ptrAdr1)) < 0)
{
sDispose (&stack);
return RET_ERR;
}
ptrAdr2 = stSearchV (&(GlobSymbTable), "PAR3");
if ((return_value_int1 = intval (ptrAdr2)) < 0)
{
sDispose (&stack);
return RET_ERR;
}
if ((return_value_int =
get_substring (&string, return_value_int,
return_value_int1)) != RET_OK)
{
sDispose (&stack);
return return_value_int;
}
if ((stInsertV
(&(stack->Content), "FunctionResult", type_string, 0, 0,
string, false)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_FINDSTR: // find_string()
ptrAdr1 = stSearchV (&(GlobSymbTable), "PAR1");
if (strval (ptrAdr1, &string) != RET_OK)
{
sDispose (&stack);
return RET_ERR;
}
ptrAdr2 = stSearchV (&(GlobSymbTable), "PAR2");
if (strval (ptrAdr2, &string1) != RET_OK)
{
sDispose (&stack);
return RET_ERR;
}
if ((return_value_int = find_string (string, string1)) < -1)
{
sDispose (&stack);
return return_value_int;
}
if ((stInsertV
(&(stack->Content), "FunctionResult", type_int,
return_value_int, 0, NULL, false)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_SORTSTR: // sort_string()
ptrAdr1 = stSearchV (&(GlobSymbTable), "PAR1");
if (strval (ptrAdr1, &string) != RET_OK)
{
sDispose (&stack);
return RET_ERR;
}
if ((return_value_int = sort_string (&string)) != RET_OK)
{
sDispose (&stack);
return return_value_int;
}
if ((stInsertV
(&(stack->Content), "FunctionResult", type_string, 0, 0,
string, false)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
break;
case INST_NONTERM:
case INST_NOP:
case INST_LABEL: // prazdne operace
break;
case INST_JUMP: // jump
//Najdeme vysledok podmienky, na jeho zaklade rozhodneme ci skakat alebo nie
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
if ((return_value_int = boolval (ptrResult)) == RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
if (return_value_int == false) //Skaceme
{ //Nastavenie labelu ako dalsej instrukcie
listSetActiveOn (List, (tInstListItem *) Inst.adr1);
}
break;
case INST_DJUMP: // jump primo bez kontroly
listSetActiveOn (List, (tInstListItem *) Inst.adr1);
break;
case INST_CALL: // volani funkci
;
t_stItemF SymbTableResult;
SymbTableResult = (t_stItemF) Inst.result;
// ulozeni ukazatele na tabulku na vrchol zasobniku
// listGetActive -> ulozi adresu funkce aby bylo mozne
// pri returnu nacist nasledujici za instrukci CALL
sPushV (&stack, NULL, listGetActive (List), List);
stInitV (&(stack->Content));
// SymbTablePtr je prazdne -> lze nahravat symboly ->
// prekopirovani stItemVPtr ze struktury t_stItemF do
// SymbolTablePtr
if (stInorderV (SymbTableResult->stItemVPtr, &(stack->Content)) ==
RET_ERR)
{
sDispose (&stack);
return RET_ERR;
}
// Nastavenie noveho zoznamu, kde su instrukcie volanej funkcie
// nastavenie aktivneho prvku na zaciatok zoznamu
List = SymbTableResult->instListPtr;
listFirstActive (List);
break;
case INST_RETURN:
//Jedna sa o return celeho programu?
if (stack->Content == GlobSymbTable)
{
sPopV (&stack);
return SYNT_OK;
}
List = stack->returnList; //Obnovime navratovy list
listSetActiveOn (List, stack->returnAddr); //aj navratovu adresu
stDisposeV (&stack->Content); //Uvlonime zasobnik
sPopV (&stack); //popneme zasobnik
break;
case INST_GTOLLOAD:
//Instrukcia, ktora nacita z globalnej tabulky do lokalnej
//Funguje ako prostrednik prenosu parametrov do funckie, ako aj
//navratovej hodnoty von z funkcie
ptrAdr1 = (t_stItemV) Inst.adr1; //Zdroj je predany priamym ukazatelom
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result); //Ciel je predany retazcom
//Zvysok instrukcie je to iste ako u instrukcie LOAD
switch (ptrAdr1->Content.Type)
{
case type_undef:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
sDispose (&stack);
return SEM_ERR_UNDEF;
case type_end_par:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
break;
case type_boolean:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.bData = ptrAdr1->Content.Data.bData;
break;
case type_int:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.iData = ptrAdr1->Content.Data.iData;
break;
case type_null:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
break;
case type_double:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.dData = ptrAdr1->Content.Data.dData;
break;
case type_string:
if (ptrResult->Key != ptrAdr1->Key)
{
if ((ptrResult->Content.Type == type_string))
{
free (ptrResult->Content.Data.sData);
}
ptrResult->Content.Type = ptrAdr1->Content.Type;
if ((ptrResult->Content.Data.sData =
(char *) malloc (sizeof (char) *
strlen (ptrAdr1->Content.Data.sData) +
1)) == NULL)
{
sDispose (&stack);
return RET_ERR;
}
strcpy (ptrResult->Content.Data.sData,
ptrAdr1->Content.Data.sData);
}
break;
}
break;
case INST_LTOGLOAD:
// Opacna operacia od GTOLLOAD
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrResult = (t_stItemV) Inst.result;
switch (ptrAdr1->Content.Type)
{
case type_undef:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
sDispose (&stack);
return SEM_ERR_UNDEF;
case type_end_par:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
break;
case type_boolean:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.bData = ptrAdr1->Content.Data.bData;
break;
case type_int:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.iData = ptrAdr1->Content.Data.iData;
break;
case type_null:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
break;
case type_double:
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData) != NULL)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.dData = ptrAdr1->Content.Data.dData;
break;
case type_string:
if (ptrResult->Key != ptrAdr1->Key)
{
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData != NULL))
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
if ((ptrResult->Content.Data.sData =
(char *) malloc (sizeof (char) *
strlen (ptrAdr1->Content.Data.sData) +
1)) == NULL)
{
sDispose (&stack);
return RET_ERR;
}
strcpy (ptrResult->Content.Data.sData,
ptrAdr1->Content.Data.sData);
}
break;
}
break;
case INST_LOAD: // nacteni hodnoty do promenne
//Obe polozky tabulky su predane retazcom
//Jedna sa o presun z lokalnej do lokalnej tabulky
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
//Na zaklade typu zdrojovej polozky rozhodneme ktore data prepiseme
switch (ptrAdr1->Content.Type)
{
case type_boolean:
if ((ptrResult->Content.Type == type_string))
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.bData = ptrAdr1->Content.Data.bData;
break;
case type_int:
if ((ptrResult->Content.Type == type_string))
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.iData = ptrAdr1->Content.Data.iData;
break;
case type_null:
if ((ptrResult->Content.Type == type_string))
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
break;
case type_double:
if ((ptrResult->Content.Type == type_string))
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.dData = ptrAdr1->Content.Data.dData;
break;
case type_string:
if (ptrResult->Key != ptrAdr1->Key)
{
if ((ptrResult->Content.Type == type_string)
&& (ptrResult->Content.Data.sData != NULL))
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
if ((ptrResult->Content.Data.sData =
(char *) malloc (sizeof (char) *
strlen (ptrAdr1->Content.Data.sData) +
1)) == NULL)
{
sDispose (&stack);
return RET_ERR;
}
strcpy (ptrResult->Content.Data.sData,
ptrAdr1->Content.Data.sData);
}
break;
case type_undef:
sDispose (&stack);
return SEM_ERR_UNDEF;
break;
}
break;
case INST_CONCAT: // . konkatenacia retazcov
string = NULL;
//nacitanie operandov
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrResult->Content.Type = type_string;
if (ptrAdr1->Content.Type != type_string) // nejde o string, chyba
{
sDispose (&stack);
return SEM_ERR_ARITH;
}
if (strval (ptrAdr2, &string) != RET_OK) // Pretypovanie druheho operandu
{
sDispose (&stack);
return RET_ERR;
}
if (ptrResult->Content.Data.sData != NULL) //najskor uvolnime string, na ktory ukazuje
free (ptrResult->Content.Data.sData); //adresa cielovej polozky, ideme ju prepisat
ptrResult->Content.Data.sData =
stringConcatenate (ptrAdr1->Content.Data.sData, string);
break;
case INST_EQUAL: // ===
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrResult->Content.Type = type_boolean;
if (ptrAdr1->Content.Type != ptrAdr2->Content.Type) // ruzny typ automaticky false
ptrResult->Content.Data.bData = false;
else
{
if (ptrAdr1->Content.Type == type_boolean)
{ // porovnani bool hodnot
if (ptrAdr1->Content.Data.bData ==
ptrAdr2->Content.Data.bData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_int)
{ // porovnani int hodnot
if (ptrAdr1->Content.Data.iData ==
ptrAdr2->Content.Data.iData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_double)
{ // porovnani double hodnot
if (ptrAdr1->Content.Data.dData ==
ptrAdr2->Content.Data.dData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_string)
{ // porovnani stringu
if ((strcmp
(ptrAdr1->Content.Data.sData,
ptrAdr2->Content.Data.sData)) == 0)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_null) // null automaticky true
ptrResult->Content.Data.bData = true;
}
break;
case INST_NEQUAL: // !==
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrResult->Content.Type = type_boolean;
if (ptrAdr1->Content.Type != ptrAdr2->Content.Type) // ruzny typ automaticky true
ptrResult->Content.Data.bData = true;
else
{
if (ptrAdr1->Content.Type == type_boolean)
{ // porovnani bool hodnot
if (ptrAdr1->Content.Data.bData ==
ptrAdr2->Content.Data.bData)
ptrResult->Content.Data.bData = false;
else
ptrResult->Content.Data.bData = true;
}
else if (ptrAdr1->Content.Type == type_int)
{ // porovnani int hodnot
if (ptrAdr1->Content.Data.iData ==
ptrAdr2->Content.Data.iData)
ptrResult->Content.Data.bData = false;
else
ptrResult->Content.Data.bData = true;
}
else if (ptrAdr1->Content.Type == type_double)
{ // porovnani double hodnot
if (ptrAdr1->Content.Data.dData ==
ptrAdr2->Content.Data.dData)
ptrResult->Content.Data.bData = false;
else
ptrResult->Content.Data.bData = true;
}
else if (ptrAdr1->Content.Type == type_string)
{ // porovnani stringu
if ((strcmp
(ptrAdr1->Content.Data.sData,
ptrAdr2->Content.Data.sData)) == 0)
ptrResult->Content.Data.bData = false;
else
ptrResult->Content.Data.bData = true;
}
else if (ptrAdr1->Content.Type == type_null) // null automaticky false
ptrResult->Content.Data.bData = false;
}
break;
case INST_ASSIGN: // =
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
switch (ptrAdr1->Content.Type)
{ // podle typu ptrAdr1 je prirazen typ vysledku...pokud byl typ vysledku string, je tento string uvolnen
// nasleduje prirazeni hodnoty
case type_boolean:
if (ptrResult->Content.Data.sData != NULL
&& ptrResult->Content.Type == type_string)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.bData = ptrAdr1->Content.Data.bData;
break;
case type_null:
if (ptrResult->Content.Data.sData != NULL
&& ptrResult->Content.Type == type_string)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
break;
case type_int:
if (ptrResult->Content.Data.sData != NULL
&& ptrResult->Content.Type == type_string)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.iData = ptrAdr1->Content.Data.iData;
break;
case type_double:
if (ptrResult->Content.Data.sData != NULL
&& ptrResult->Content.Type == type_string)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
ptrResult->Content.Data.dData = ptrAdr1->Content.Data.dData;
break;
case type_string:
if (ptrResult->Key != ptrAdr1->Key)
{
if (ptrResult->Content.Data.sData != NULL
&& ptrResult->Content.Type == type_string)
free (ptrResult->Content.Data.sData);
ptrResult->Content.Type = ptrAdr1->Content.Type;
if ((ptrResult->Content.Data.sData =
(char *) malloc (sizeof (char) *
strlen (ptrAdr1->Content.Data.sData) +
1)) == NULL)
{
sDispose (&stack);
return RET_ERR;
}
strcpy (ptrResult->Content.Data.sData,
ptrAdr1->Content.Data.sData);
}
break;
case type_undef:
sDispose (&stack);
return SEM_ERR_UNDEF;
break;
}
break;
case INST_LESSER: // <
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrResult->Content.Type = type_boolean;
if (ptrAdr1->Content.Type != ptrAdr2->Content.Type)
{ // nekompatibilni typy, chyba
sDispose (&stack);
return SEM_ERR_ARITH;
}
else
{
if (ptrAdr1->Content.Type == type_boolean)
{ // porovnani bool hodnot
if (ptrAdr1->Content.Data.bData <
ptrAdr2->Content.Data.bData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_int)
{ // porovnani int hodnot
if (ptrAdr1->Content.Data.iData <
ptrAdr2->Content.Data.iData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_double)
{ // porovnani double hodnot
if (ptrAdr1->Content.Data.dData <
ptrAdr2->Content.Data.dData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_string)
{ // porovnani stringu
if ((strcmp
(ptrAdr1->Content.Data.sData,
ptrAdr2->Content.Data.sData)) < 0)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_null) // null automaticky false
ptrResult->Content.Data.bData = false;
}
break;
case INST_LESSERQ: // <=
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrResult->Content.Type = type_boolean;
if (ptrAdr1->Content.Type != ptrAdr2->Content.Type)
{ // nekompatibilni typy, chyba
sDispose (&stack);
return SEM_ERR_ARITH;
}
else
{
if (ptrAdr1->Content.Type == type_boolean)
{ // porovnani bool hodnot
if (ptrAdr1->Content.Data.bData <=
ptrAdr2->Content.Data.bData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_int)
{ // porovnani int hodnot
if (ptrAdr1->Content.Data.iData <=
ptrAdr2->Content.Data.iData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_double)
{ // porovnani double hodnot
if (ptrAdr1->Content.Data.dData <=
ptrAdr2->Content.Data.dData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_string)
{ // porovnani stringu
if ((strcmp
(ptrAdr1->Content.Data.sData,
ptrAdr2->Content.Data.sData)) <= 0)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_null) // null automaticky false
ptrResult->Content.Data.bData = false;
}
break;
case INST_GREATER: // >
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrResult->Content.Type = type_boolean;
if (ptrAdr1->Content.Type != ptrAdr2->Content.Type)
{ // nekompatibilni typy, chyba
sDispose (&stack);
return SEM_ERR_ARITH;
}
else
{
if (ptrAdr1->Content.Type == type_boolean)
{ // porovnani bool hodnot
if (ptrAdr1->Content.Data.bData >
ptrAdr2->Content.Data.bData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_int)
{ // porovnani int hodnot
if (ptrAdr1->Content.Data.iData >
ptrAdr2->Content.Data.iData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_double)
{ // porovnani double hodnot
if (ptrAdr1->Content.Data.dData >
ptrAdr2->Content.Data.dData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_string)
{ // porovnani stringu
if ((strcmp
(ptrAdr1->Content.Data.sData,
ptrAdr2->Content.Data.sData)) > 0)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_null) // null automaticky false
ptrResult->Content.Data.bData = false;
}
break;
case INST_GREATERQ: // >=
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
ptrResult->Content.Type = type_boolean;
if (ptrAdr1->Content.Type != ptrAdr2->Content.Type)
{ // nekompatibilni typy, chyba
sDispose (&stack);
return SEM_ERR_ARITH;
}
else
{
if (ptrAdr1->Content.Type == type_boolean)
{ // porovnani bool hodnot
if (ptrAdr1->Content.Data.bData >=
ptrAdr2->Content.Data.bData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_int)
{ // porovnani int hodnot
if (ptrAdr1->Content.Data.iData >=
ptrAdr2->Content.Data.iData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_double)
{ // porovnani double hodnot
if (ptrAdr1->Content.Data.dData >=
ptrAdr2->Content.Data.dData)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_string)
{ // porovnani stringu
if ((strcmp
(ptrAdr1->Content.Data.sData,
ptrAdr2->Content.Data.sData)) >= 0)
ptrResult->Content.Data.bData = true;
else
ptrResult->Content.Data.bData = false;
}
else if (ptrAdr1->Content.Type == type_null) // null automaticky false
ptrResult->Content.Data.bData = false;
}
break;
case INST_PLUS: // +
return_value_double = -1.0;
return_value_int = -1;
// Nacitani operandu a cilove polozky
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
if ((ptrAdr1->Content.Type != type_double)
&& (ptrAdr1->Content.Type != type_int))
{ // typ prvniho operandu nevyhovuje, chyba
sDispose (&stack);
return SEM_ERR_ARITH;
}
if ((ptrAdr2->Content.Type != type_double)
&& (ptrAdr2->Content.Type != type_int))
{ // typ druheho operandu nevyhovuje, chyba
sDispose (&stack);
return SEM_ERR_ARITH;
}
if ((ptrAdr1->Content.Type == type_double)
|| (ptrAdr2->Content.Type == type_double))
{ // pokud je jeden z operandu double, vysledek je typu double
ptrResult->Content.Type = type_double;
if ((ptrAdr1->Content.Type == type_int)
&& (ptrAdr2->Content.Type == type_double))
ptrResult->Content.Data.dData =
ptrAdr1->Content.Data.iData + ptrAdr2->Content.Data.dData;
else if ((ptrAdr1->Content.Type == type_double)
&& (ptrAdr2->Content.Type == type_int))
ptrResult->Content.Data.dData =
ptrAdr1->Content.Data.dData + ptrAdr2->Content.Data.iData;
else
ptrResult->Content.Data.dData =
ptrAdr1->Content.Data.dData + ptrAdr2->Content.Data.dData;
}
else
{ // vysledek je typu int, pokud jsou oba operandy typu int
ptrResult->Content.Type = type_int;
ptrResult->Content.Data.iData =
ptrAdr1->Content.Data.iData + ptrAdr2->Content.Data.iData;
}
break;
case INST_MINUS: // -
return_value_double = -1.0;
return_value_int = -1;
ptrAdr1 = stSearchV (&(stack->Content), (char *) Inst.adr1);
ptrAdr2 = stSearchV (&(stack->Content), (char *) Inst.adr2);
ptrResult = stSearchV (&(stack->Content), (char *) Inst.result);
if ((ptrAdr1->Content.Type != type_double)
&& (ptrAdr1->Content.Type != type_int))
{
sDispose (&stack);
return SEM_ERR_ARITH;
}
if ((ptrAdr2->Content.Type != type_double)
&& (ptrAdr2->Content.Type != type_int))
{
sDispose (&stack);
return SEM_ERR_ARITH;
}
if ((ptrAdr1->Content.Type == type_double)
|| (ptrAdr2->Content.Type == type_double))
{