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syntax.cpp
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//
// Created by ahmad on 1/16/16.
//
#include "syntax.h"
#include <stack>
#include <string.h>
#include <stdio.h>
#include <string.h>
void Pcheck_m(token * node,char To)
{
while((node->value[0]!=To)&&(node!=NULL))
{
if(node->value[0]=='(')
{
if (node->next->value[0]=='(')
node=node->next;
else if(node->next->type==2)
node=node->next;
else if(node->next->type==4)
node=node->next;
else
{
generateErr(node->next->lineNumber,ERR_AFTER_PARENTHESIS_OPEN,"",node->fileName);
return;
}
}
else if(node->value[0]==')')
{
if (node->next->value[0]==')')
node=node->next;
else if(node->next->type==3)
node=node->next;
else if (node->next->value[0]==To)
node=node->next;
else
{
generateErr(node->next->lineNumber,ERR_AFTER_PARENTHESIS_CLOSE,"",node->fileName);
return;
}
}
else if ((node->type==4)||(node->type==2))
{
if (node->next->type==3)
node=node->next;
else if(node->next->value[0]==To)
node=node->next;
else if(node->next->value[0]==')')
node=node->next;
else
{
printf("bad az adad ya moteghayer bayad operator bashe %d \n",node->next->lineNumber);
return;
}
}
else if (node->type==3)
{
if (node->next->value[0]=='(')
node=node->next;
else if ((node->next->type==4)||(node->next->type==2))
node=node->next;
else
{
generateErr(node->next->lineNumber,ERR_AFTER_OPR,"",node->next->fileName);
return;
}
}
else if(node->value[0]==To)
return;
}
}
void Pcheck(token *node,char To){
//a='a';
if ((node->type==4)||(node->type==2))
{
if (node->next!=NULL)
{
if (node->next->value[0]=='=')
{
if (node->next->next!=NULL)
if(node->next->next->type==5)
{
if(node->next->next->next->value[0]==To)
;
else{
char str[2] = " ";
str[0] = To;
generateErr(node->next->lineNumber,ERR_REPLACE,str,node->next->fileName);
}
}
}
}
}
//a=true ;
if ((node->type==4)||(node->type==2))
{
if (node->next!=NULL)
{
if (node->next->value[0]=='=')
{
if (node->next->next!=NULL)
if((strcmp(node->next->next->value,"true"))||(strcmp(node->next->next->value,"false")))
{
if(node->next->next->next->value[0]==To)
;
else {
char str[2] = " ";
str[0] = To;
generateErr(node->next->lineNumber, ERR_REPLACE, str, node->next->fileName);
}
}
}
}
}
////ta inja check shod
if ((node->type==4)||(node->type==2))
{
if ((node->type==4)&&(node->next->value[0]=='='))
generateErr(node->next->lineNumber,ERR_ASSIGN_TO_NUMBER,"",node->next->fileName);
if (node->next!=NULL)
{
if(node->next->next!=NULL)
{
if((node->next->value[0]=='=')&&(strcmp(node->next->next->value,"NULL")==0))
{
if(node->next->next->next!=NULL)
{
if(node->next->next->next->value[0]==To)
;
else {
char str[2] = " ";
str[0] = To;
generateErr(node->next->next->next->lineNumber,ERR_AFTER_NULL,str,node->next->next->next->fileName);
}
}
}
else if((node->next->type==3)&&(node->next->value[0]!='=')&&(strcmp(node->next->next->value,"NULL")==0))
generateErr(node->next->next->lineNumber,ERR_NULL_NOT_OPERATABLE,"",node->next->next->fileName);
}
}
/////////////////////
if(node->next->value[0]=='(')
Pcheck_m(node->next,To);
else if (node->next->type==3)
{
Pcheck_m(node->next,To);
}
else if (node->next->value[0]==To)
;
else {
char str[2] = " ";
str[0] = To;
generateErr(node->next->lineNumber,ERR_OPERATOR_OR_,str,node->next->fileName);
}
return;
}
else if(node->value[0]=='(')
Pcheck_m(node,To);
else
generateErr(node->lineNumber,ERR_ID_OR_NUM,"",node->fileName);
}
void Keycheck(token * node)
{
////////////////////////////////////////////////
if (strcmp(node->value,"if")==0)
{
if(node->next->value[0]=='(')
{
Pcheck(node->next->next, ')');
while(node->value[0]!='{')
node=node->next;
//node->value======='{'
Tcheck(node, '}');
}
else
generateErr(node->lineNumber,ERR_AFTER_IF_OR_WHILE_PARENTHESIS_OPEN,"IF",node->fileName);
}
//////////////////////////////////////////////////
else if (strcmp(node->value,"while")==0)
{
if(node->next->value[0]=='(')
{
Pcheck(node->next->next, ')');
while(node->value[0]!='{')
node=node->next;
//node->value======='{'
Tcheck(node, '}');
}
else
generateErr(node->lineNumber,ERR_AFTER_IF_OR_WHILE_PARENTHESIS_OPEN,"WHILE",node->fileName);
}
////////////////////////////////////////////////
else if (strcmp(node->value,"else")==0)
{
if(node->next->value[0]=='{')
Tcheck(node->next, '}');
else
generateErr(node->lineNumber,ERR_AFTER_ELSE_BRACE_OPEN,"",node->fileName);
}
////////////////////////////////////////////////
else if (strcmp(node->value,"int")==0)
{
if (node->next->type==2)
{
if (node->next->next->value[0]=='=')
{
Pcheck(node->next->next->next,';');
}
else if (node->next->next->value[0]==';')
;
else
generateErr(node->next->lineNumber,ERR_ASSIGN_OR_SEMICOLON,"",node->next->fileName);
}
else
generateErr(node->next->lineNumber,ERR_SHOULD_DECLARE_ID,"",node->next->fileName);
return;
}
/////////////////////////////////////////////////
else if (strcmp(node->value,"bool")==0)
{
if (node->next->type==2)
{
if (node->next->next->value[0]=='=')
{
if ((strcmp(node->next->next->next->value,"true")==0)||(strcmp(node->next->next->next->value,"false")==0)||(node->next->next->next->type==2))
{
if (node->next->next->next->next->value[0]==';')
;
else
generateErr(node->next->next->next->lineNumber,ERR_SEMICOLON_NEEDED,"",node->next->next->next->fileName);
}
else
generateErr(node->next->next->next->lineNumber,ERR_BOOL_TYPE_MISMATCH,"",node->next->next->next->fileName);
}
else
generateErr(node->next->lineNumber,ERR_ASSIGNMENT_EXPECTED,"",node->next->fileName);
}
else
generateErr(node->next->lineNumber,ERR_SHOULD_DECLARE_ID,"",node->next->fileName);
return;
}
/////////////////////////////////////////////////
else if (strcmp(node->value,"char")==0)
{
if (node->next->type==2)
{
if (node->next->next->value[0]=='=')
{
if ((node->next->next->next->type==5)||(node->next->next->next->type==2))
{
if (node->next->next->next->next->value[0]==';')
;
else
generateErr(node->next->next->next->lineNumber,ERR_SEMICOLON_NEEDED,"",node->next->next->next->fileName);
}
else
generateErr(node->next->next->next->lineNumber,ERR_CHAR_TYPE_MISMATCH,"",node->next->next->next->fileName);
}
else
generateErr(node->next->lineNumber,ERR_ASSIGNMENT_EXPECTED,"",node->next->fileName);
}
else
generateErr(node->next->lineNumber,ERR_SHOULD_DECLARE_ID,"",node->next->fileName);
return;
}
////////////////////////////////////////////////
else if (strcmp(node->value,"main")==0)
{
if (node->next->value[0]=='(')
{
if (node->next->next->value[0]==')')
{ if(node->next->next->next->value[0]=='{')
{
Tcheck(node->next->next->next, '}');
}
else
printf("bad az main { yadet rafte %d \n",node->next->next->lineNumber);
}
else if (strcmp(node->next->next->value,"void")==0)
{
if(node->next->next->next->value[0]==')') {
if(node->next->next->next->next->value[0]=='{')
{
Tcheck(node->next->next->next->next, '}');
}
else
printf("bad az main { yadet rafte %d \n",node->next->next->next->lineNumber);
}
}
else
printf("bad az ( , ya bayad void bashe ya ) %d \n",node->next->lineNumber);
}
else
printf("bad az main ( yadet rafte %d \n",node->lineNumber);
return;
}
/////////////////////////////////////////////////
else if (strcmp(node->value,"void")==0)
{
if (strcmp(node->next->value,"main")==0)
{
if (node->next->next->value[0]=='(')
{
if (node->next->next->next->value[0]==')')
{ if(node->next->next->next->next->value[0]=='{')
{
Tcheck(node->next->next->next->next, '}');
}
else
generateErr(node->next->next->next->lineNumber,ERR_MAIN_SCOPE_START,"",node->next->next->next->fileName);
}
else if (strcmp(node->next->next->next->value,"void")==0)
{
if(node->next->next->next->next->value[0]==')')
{
if(node->next->next->next->next->next->value[0]=='{')
{
Tcheck(node->next->next->next->next->next, '}');
}
else
generateErr(node->next->next->next->lineNumber,ERR_MAIN_SCOPE_START,"",node->next->next->next->fileName);
}
}
else
generateErr(node->next->next->lineNumber,ERR_MAIN_PARENTHESIS,"",node->next->next->fileName);
}
else
generateErr(node->next->next->lineNumber,ERR_MAIN_PARENTHESIS,"",node->next->next->fileName);
}
else
generateErr(node->lineNumber,ERR_MAIN_AFTER_VOID,"",node->fileName);
return;
}
//////////////////////////////////////////////////
else if (strcmp(node->value,"return")==0)
{
if (node->next->value[0]==';')
;
else
generateErr(node->lineNumber,ERR_SEMICOLON_AFTER_RETURN,"",node->fileName);
}
/////////////////////////////////////////////////
else
generateErr(node->lineNumber,ERR_KEYWORD_EXPECTED,"",node->fileName);
return;
}
token * Tcheck(token * node,char To)
{
int s=0;
int v=1;
while (v!=0)
{
if (node==NULL)
break;
if((node->value[0]==To)&&(s==0))
{
v=0;
return node;
}
if (node->value[0]=='{')
s++;
if(node->value[0]=='}')
s--;
if((node->value[0]==To)&&(s==0))
{
v=0;
return node;
}
else if ((node->type==2)&&(v!=0)){
if (node->next->value[0]=='=')
Pcheck(node->next->next, ';');
else
Pcheck(node, ';');
int x=0;
while(node->value[0]!=';')
{
if(node->next!=NULL) {
node=node->next;
}
if(node->next==NULL) {
x=1;
break;
}
}
if (x==1)
return node;
}
else if(node->type==1)
{
int t=1;
Keycheck(node);
if (strcmp(node->value,"if")==0)
{
while(node->value[0]!='{')
node=node->next;
while(t!=0)
{
node=node->next;
if(node->value[0]=='{')
t++;
else if(node->value[0]=='}')
t--;
}
}
if (strcmp(node->value,"while")==0)
{
while(node->value[0]!='{')
node=node->next;
while(t!=0)
{
node=node->next;
if(node->value[0]=='{')
t++;
else if(node->value[0]=='}')
t--;
}
}
if (strcmp(node->value,"else")==0)
{
node=node->next;
while(t!=0)
{
node=node->next;
if(node->value[0]=='{')
t++;
else if(node->value[0]=='}')
t--;
}
}
if (strcmp(node->value,"main")==0)
{
while(node->value[0]!='{')
node=node->next;
while(t!=0)
{
node=node->next;
if (node!=NULL)
{if(node->value[0]=='{')
t++;
else if(node->value[0]=='}')
t--;}
else return NULL;
}
}
if (strcmp(node->value,"void")==0)
{
while(node->value[0]!='{')
node=node->next;
while(t!=0)
{
node=node->next;
if (node!=NULL)
{if(node->value[0]=='{')
t++;
else if(node->value[0]=='}')
t--;}
else return NULL;
}
}
if ((strcmp(node->value,"int")==0)||(strcmp(node->value,"bool")==0)||(strcmp(node->value,"char")==0))
{
int x=0;
while(node->value[0]!=';')
{
if(node->next!=NULL)
{ node=node->next;
}
if(node->next==NULL)
{ x=1;
break;}
}
if (x==1)
return node;
}
if (strcmp(node->value,"return")==0)
{
int x=0;
while(node->value[0]!=';')
{
if(node->next!=NULL)
{ node=node->next;
}
if(node->next==NULL)
{ x=1;
break;}
}
}
}
if(v!=0)
node=node->next;
}
return node;
}
void checkPunc(token *head)
{
using namespace std;
stack<int> punc;
token *ptr = head;
char fileName[FILE_PATH_LEN_LIM]; // To store the file name of the punctuation token that may be mistaken further more
int lastLine; // To store the number of the last line of the file
while (ptr != NULL)
{
if(ptr->type == PUNC_TOKEN){
int type;
if(strcmp(ptr->value,"{") == 0){
type = PUNC_BRACE_OP;
strcpy(fileName,ptr->fileName);
}else if(strcmp(ptr->value,"(") == 0){
type = PUNC_PARAN_OP;
strcpy(fileName,ptr->fileName);
} else if(strcmp(ptr->value,"}") == 0){
type = PUNC_BRACE_CL;
}else if(strcmp(ptr->value,")") == 0) {
type = PUNC_PARAN_CL;
}else{
ptr = ptr->next;
continue;
}
if(type > 0){
punc.push(type);
}else{ // type < 0
if(punc.size() == 0) { // No punc has been opened to expect one to be close
generateErr(ptr->lineNumber, ERR_PUNCT_NOT_EXPECTED, ptr->value, ptr->fileName);
}else {
if ((punc.top() + type) != 0) {
generateErr(ptr->lineNumber, ERR_PUNCT_NOT_EXPECTED, ptr->value, ptr->fileName);
}else{
punc.pop();
}
}
}
}
lastLine = ptr->lineNumber; // To store the number of the last line of the file
ptr = ptr->next;
}
for (int i = 0; i < punc.size(); ++i) {
printf("why?\n");
switch (punc.top()){
case PUNC_PARAN_OP:
generateErr(lastLine,ERR_PUNCT_CLOSE_EXPECTED,"(",fileName);
break;
case PUNC_BRACE_OP:
generateErr(lastLine,ERR_PUNCT_CLOSE_EXPECTED,"{",fileName);
break;
}
punc.pop();
}
}