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functions.c
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functions.c
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#include "functions.h"
#include <math.h>
extern int yyparse();
extern FILE *yyin;
extern FILE *yyout;
extern int yylineno;
char* valueToString(variable v) {
char* str = (char*)malloc(sizeof(char)*10+1);
switch(v.type) {
case INTEGER:
sprintf(str, "%d", v.value.ival);
break;
case FLOAT:
sprintf(str, "%f", v.value.fval);
break;
case STRING:
str = v.value.sval;
break;
case BOOLEAN:
str = v.value.bval ? "true" : "false";
break;
default:
str = "undefined";
}
return str;
}
char* typeToString(variable v) {
char* str = (char*)malloc(sizeof(char)*10+1);
switch(v.type) {
case INTEGER:
str = "INTEGER";
break;
case FLOAT:
str = "FLOAT";
break;
case STRING:
str = "STRING";
break;
case BOOLEAN:
str = "BOOLEAN";
break;
default:
str = "UNDEFINED";
}
return str;
}
variable trigonometricCalc(variable opv, variable v1) {
char * op = opv.value.sval;
variable result = {.type = FLOAT};
float num1;
if(v1.type == STRING)
{
result.type = UNDEFINED;
result.value.sval = "SEMANTIC ERROR: Invalid operation for string type.\n";
return result;
} else if(v1.type == FLOAT) { num1 = v1.value.fval; }
else { num1 = v1.value.ival; }
if (strcmp(op, "sin") == 0) result.value.fval = sinf(num1);
else if (strcmp(op, "cos") == 0) result.value.fval = cosf(num1);
else if (strcmp(op, "tan") == 0) result.value.fval = tanf(num1);
else {
result.type = UNDEFINED;
result.value.sval= "SEMANTIC ERROR: Invalid operation.\n";
return result;
}
return result;
}
variable arithmeticCalc(variable v1, variable opv, variable v2) {
char * op = opv.value.sval;
variable result = {.type = UNDEFINED};
if (v1.type == INTEGER && v2.type == INTEGER) {
result.type = INTEGER;
if (strcmp(op, "+") == 0) {
result.value.ival = v1.value.ival + v2.value.ival;
} else if (strcmp(op, "-") == 0) {
result.value.ival = v1.value.ival - v2.value.ival;
} else if (strcmp(op, "*") == 0) {
result.value.ival = v1.value.ival * v2.value.ival;
} else if (strcmp(op, "/") == 0) {
if(v2.value.ival==0)
{
result.type = UNDEFINED;
result.value.sval = "SEMANTIC ERROR: Division by zero\n";
return result;
}
result.value.ival = v1.value.ival / v2.value.ival;
} else if (strcmp(op, "%") == 0) {
result.value.ival = v1.value.ival % v2.value.ival;
}
} else if ((v1.type == INTEGER || v1.type == FLOAT) && (v2.type == INTEGER || v2.type == FLOAT)) {
result.type = FLOAT;
float v1_f, v2_f;
if (v1.type == INTEGER) {
v1_f = (float)v1.value.ival;
} else {
v1_f = v1.value.fval;
}
if (v2.type == INTEGER) {
v2_f = (float)v2.value.ival;
} else {
v2_f = v2.value.fval;
}
if (strcmp(op, "+") == 0) {
result.value.fval = v1_f + v2_f;
} else if (strcmp(op, "-") == 0) {
result.value.fval = v1_f - v2_f;
} else if (strcmp(op, "*") == 0) {
result.value.fval = v1_f * v2_f;
} else if (strcmp(op, "/") == 0) {
if(v2_f==0)
{
result.type = UNDEFINED;
result.value.sval = "SEMANTIC ERROR: Division by zero.\n";
return result;
}
result.value.fval = v1_f / v2_f;
} else if (strcmp(op, "%") == 0) {
result.type = UNDEFINED;
result.value.sval = "SEMANTIC ERROR: Invalid operation for float type.\n";
return result;
}
} else if(v1.type == STRING || v2.type == STRING) {
if (strcmp(op, "+") != 0) {
result.type = UNDEFINED;
result.value.sval="SEMANTIC ERROR: Invalid operation for string type.\n";
return result;
}
result.type = STRING;
char* v1_str = valueToString(v1);
char* v2_str = valueToString(v2);
int len = strlen(v1_str) + strlen(v2_str) + 1;
result.value.sval = (char*)malloc(sizeof(char)*len+1);
strcpy(result.value.sval, v1_str);
strcat(result.value.sval, v2_str);
} else if (v1.type == STRING && (v2.type == INTEGER || v2.type == FLOAT)) {
char num_str[32];
if (v2.type == INTEGER) {
snprintf(num_str, sizeof(num_str), "%d", v2.value.ival);
} else {
snprintf(num_str, sizeof(num_str), "%f", v2.value.fval);
}
result.type = STRING;
result.value.sval = (char*)malloc(sizeof(char) * (strlen(v1.value.sval) + strlen(num_str) + 1));
} else if (v2.type == STRING && (v1.type == INTEGER || v1.type == FLOAT)) {
char num_str[32];
if (v1.type == INTEGER) {
snprintf(num_str, sizeof(num_str), "%d", v1.value.ival);
} else {
snprintf(num_str, sizeof(num_str), "%f", v1.value.fval);
}
result.type = STRING;
result.value.sval = (char*)malloc(sizeof(char) * (strlen(num_str) + strlen(v2.value.sval) + 1));
} else {
result.type = UNDEFINED;
result.value.sval="SEMANTIC ERROR: Invalid type for arithmetic operation.\n";
return result;
}
return result;
}
variable booleanCalc(variable v1, variable opv, variable v2) {
variable result;
result.type = BOOLEAN;
char * op = opv.value.sval;
float v1_f, v2_f;
if (v1.type == INTEGER) {
v1_f = (float)v1.value.ival;
} else if (v1.type == FLOAT) {
v1_f = v1.value.fval;
} else if (v1.type == BOOLEAN) {
v1_f = v1.value.bval;
}
if (v2.type == INTEGER) {
v2_f = (float)v2.value.ival;
} else if (v2.type == FLOAT) {
v2_f = v2.value.fval;
} else if (v2.type == BOOLEAN) {
v2_f = v2.value.bval;
} else {
result.type = UNDEFINED;
result.value.sval="SEMANTIC ERROR: Invalid type for boolean operation.\n";
return result;
}
if (strcmp(op, "==") == 0) {
result.value.bval = v1_f == v2_f;
} else if (strcmp(op, ">") == 0) {
result.value.bval = v1_f > v2_f;
} else if (strcmp(op, ">=") == 0) {
result.value.bval = v1_f >= v2_f;
} else if (strcmp(op, "<") == 0) {
result.value.bval = v1_f < v2_f;
} else if (strcmp(op, "<=") == 0) {
result.value.bval = v1_f <= v2_f;
} else if (strcmp(op, "<>") == 0) {
result.value.bval = v1_f != v2_f;
}
return result;
}