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1505057.y
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1505057.y
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%{
#include<cstdio>
#include<cstdlib>
#include<string>
#include <algorithm>
#include <bitset>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <ctime>
#include <sstream>
using namespace std;
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define REP(i, n) for (int i = 0; i < n; i++)
#define ll long long
#define ull unsigned long long
#define inf 1e9
#define sf(a) scanf("%d",&a);
#define sf2(a, b) scanf("%d %d",&a,&b);
#define sf3(a, b, c) scanf("%d %d %d",&a,&b,&c);
#define pf printf
#define mset(a, b) memset(a,b,sizeof(a))
#define itf it->first
#define its it->second
#include "SymbolTable.h"
FILE *fp,*logOut,*errorOut;
int errorCount;
/* interfacing in lexer */
extern int yylineno;
void yyerror(char *s){
fprintf(logOut,"\nAt line no: %d %s\n",yylineno,s);
}
int yyparse(void);
int yylex(void);
extern FILE *yyin;
SymbolTable *table = new SymbolTable();
vector<string> pType,pID;
vector<vInfo*> vID;
vector<string> :: iterator it,it2,argit;
vector<vInfo*> :: iterator vit;
%}
%union {
SymbolInfo *s;
}
%token <s> INT ID COMMA SEMICOLON LTHIRD RTHIRD CONST_INT VOID FLOAT LPAREN RPAREN RCURL LCURL ASSIGNOP
%token <s> ADDOP CONST_FLOAT DECOP INCOP LOGICOP MULOP NOT RELOP FOR IF ELSE LOWER_THAN_ELSE WHILE PRINTLN RETURN
%type <s> start program unit var_declaration type_specifier declaration_list func_declaration parameter_list
%type <s> func_definition compound_statement statement statements expression_statement expression logic_expression
%type <s> variable arguments argument_list factor unary_expression term rel_expression simple_expression
%define parse.error verbose
%nonassoc LOWER_THAN_ELSE
%nonassoc ELSE
%%
start : program
{
fprintf(logOut,"\nAt line no: %d start : program\n",yylineno-1);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
;
program : program unit
{
fprintf(logOut,"\nAt line no: %d program : program unit\n",yylineno);
fprintf(logOut,"\n%s\n%s\n",$1->name.c_str(),$2->name.c_str());
string temp=$1->name.c_str();
temp+="\n";
temp+=$2->name.c_str();
$$->name=temp.c_str();
}
| unit
{
fprintf(logOut,"\nAt line no: %d program : unit\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
;
unit : var_declaration
{
fprintf(logOut,"\nAt line no: %d unit : var_declaration\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
| func_declaration
{
fprintf(logOut,"\nAt line no: %d unit : func_declaration\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
| func_definition
{
fprintf(logOut,"\nAt line no: %d unit : func_definition\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
| error SEMICOLON
{
pID.clear();
pType.clear();
vID.clear();
$$ = new SymbolInfo("ERROR");
}
;
func_declaration : type_specifier ID LPAREN parameter_list RPAREN SEMICOLON
{
fprintf(logOut,"\nAt line no: %d func_declaration : type_specifier ID LPAREN parameter_list RPAREN SEMICOLON\n",yylineno);
fprintf(logOut,"\n%s %s(%s);\n",$1->name.c_str(),$2->name.c_str(),$4->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+=" ";
temp+=$2->name.c_str();
temp+="(";
temp+=$4->name.c_str();
temp+=");";
$$ = new SymbolInfo(temp.c_str());
//function
SymbolInfo *node= new SymbolInfo($2->name.c_str());
if(table->search($2->name.c_str())==NULL)
{
node->function = true;
node->info = new FunctionInfo();
node->info->funcDec = true;
node->info->retType = $1->name.c_str();
node->info->paramType = pType;
node->info->paramID = pID;
table->insert(node,"ID");
}
else
{
fprintf(errorOut,"\nError at line %d : Multiple Declaration of %s\n",yylineno,$2->name.c_str());
errorCount++;
}
pType.clear();
pID.clear();
}
| type_specifier ID LPAREN RPAREN SEMICOLON
{
fprintf(logOut,"\nAt line no: %d func_declaration : type_specifier ID LPAREN RPAREN SEMICOLON\n",yylineno);
fprintf(logOut,"\n%s %s();\n",$1->name.c_str(),$2->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+=" ";
temp+=$2->name.c_str();
temp+="();";
$$ = new SymbolInfo(temp.c_str());
//function
SymbolInfo *node= new SymbolInfo($2->name.c_str());
if(table->search($2->name.c_str())==NULL)
{
node->function = true;
node->info = new FunctionInfo();
node->info->funcDec = true;
node->info->retType = $1->name.c_str();
node->info->paramType = pType;
node->info->paramID = pID;
table->insert(node,"ID");
}
else
{
fprintf(errorOut,"\nError at line %d : Multiple Declaration of %s\n",yylineno,$2->name.c_str());
errorCount++;
}
pType.clear();
pID.clear();
}
/* | error SEMICOLON
{
pID.clear();
pType.clear();
$$ = new SymbolInfo("ERROR IN FUNCTION DECLARATION");
} */
;
func_definition : type_specifier ID LPAREN parameter_list RPAREN {
// fucntion
SymbolInfo *tempNode=table->search($2->name.c_str());
if(tempNode==NULL)
{
SymbolInfo *node= new SymbolInfo($2->name.c_str());
node->function = true;
node->info = new FunctionInfo();
node->info->funcDef = true;
node->info->retType = $1->name.c_str();
node->info->paramType = pType;
node->info->paramID = pID;
node->lineno = $2->lineno;
table->insert(node,"ID");
}
else if(tempNode->function)
{
if(tempNode->info->funcDec && !tempNode->info->funcDef)
{
bool flag=true;
if($1->name!=tempNode->info->retType)
flag=false;
if(pType!=tempNode->info->paramType)
flag=false;
//if(pID!=tempNode->info->paramID)
// flag=false;
for(it=pID.begin(),it2=tempNode->info->paramID.begin();it!=pID.end(),it2!=tempNode->info->paramID.end();++it,++it2)
{
if(*it2!="un")
{
if(*it!=*it2)
flag=false;
}
}
if(!flag)
{
fprintf(errorOut,"\nError at line %d : Function declaration and definition didn't match of %s\n",yylineno,$2->name.c_str());
errorCount++;
}
else
{
table->remove($2->name.c_str());
SymbolInfo *node= new SymbolInfo($2->name.c_str());
node->function = true;
node->info = new FunctionInfo();
node->info->funcDef = true;
node->info->funcDec = true;
node->info->retType = $1->name.c_str();
node->info->paramType = pType;
node->info->paramID = pID;
node->lineno = $2->lineno;
table->insert(node,"ID");
}
}
else
{
fprintf(errorOut,"\nError at line %d : Redefinition of function %s\n",yylineno,$2->name.c_str());
errorCount++;
}
}
else
{
fprintf(errorOut,"\nError at line %d : Multiple Declaration of %s\n",yylineno,$2->name.c_str());
errorCount++;
}
} compound_statement /*{table->printAllTable(logOut); table->exitScope(logOut);}*/
{
fprintf(logOut,"\nAt line no: %d func_definition : type_specifier ID LPAREN parameter_list RPAREN compound_statement\n",yylineno);
fprintf(logOut,"\n%s %s(%s)%s\n",$1->name.c_str(),$2->name.c_str(),$4->name.c_str(),$7->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+=" ";
temp+=$2->name.c_str();
temp+="(";
temp+=$4->name.c_str();
temp+=")";
temp+=$7->name.c_str();
$$ = new SymbolInfo(temp.c_str());
}
| type_specifier ID LPAREN RPAREN {
// fucntion
SymbolInfo *tempNode=table->search($2->name.c_str());
if(tempNode==NULL)
{
SymbolInfo *node= new SymbolInfo($2->name.c_str());
node->function = true;
node->info = new FunctionInfo();
node->info->funcDef = true;
node->info->retType = $1->name.c_str();
node->info->paramType = pType;
node->info->paramID = pID;
node->lineno = $2->lineno;
table->insert(node,"ID");
}
else if(tempNode->function)
{
if(tempNode->info->funcDec && !tempNode->info->funcDef)
{
bool flag=true;
if($1->name!=tempNode->info->retType)
flag=false;
if(pType!=tempNode->info->paramType)
flag=false;
if(pID!=tempNode->info->paramID)
flag=false;
if(!flag)
{
fprintf(errorOut,"\nError at line %d : Function declaration and definition didn't match of %s\n",yylineno,$2->name.c_str());
errorCount++;
}
else
{
table->remove($2->name.c_str());
SymbolInfo *node= new SymbolInfo($2->name.c_str());
node->function = true;
node->info = new FunctionInfo();
node->info->funcDef = true;
node->info->funcDec = true;
node->info->retType = $1->name.c_str();
node->info->paramType = pType;
node->info->paramID = pID;
node->lineno = $2->lineno;
table->insert(node,"ID");
}
}
else
{
fprintf(errorOut,"\nError at line %d : Redefinition of function %s\n",yylineno,$2->name.c_str());
errorCount++;
}
}
else
{
fprintf(errorOut,"\nError at line %d : Multiple Declaration of %s\n",yylineno,$2->name.c_str());
errorCount++;
}
} compound_statement /*{table->printAllTable(logOut); table->exitScope(logOut);}*/
{
fprintf(logOut,"\nAt line no: %d func_definition : type_specifier ID LPAREN RPAREN compound_statement\n",yylineno);
fprintf(logOut,"\n%s %s()%s\n",$1->name.c_str(),$2->name.c_str(),$6->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+=" ";
temp+=$2->name.c_str();
temp+="()";
temp+=$6->name.c_str();
$$ = new SymbolInfo(temp.c_str());
}
| error compound_statement
{
pType.clear();
pID.clear();
string temp = "FUNCTION DEFINATION ERROR\n";
temp+=$2->name.c_str();
$$ = new SymbolInfo(temp.c_str());
}
;
parameter_list : parameter_list COMMA type_specifier ID
{
fprintf(logOut,"\nAt line no: %d parameter_list : parameter_list COMMA type_specifier ID\n",yylineno);
fprintf(logOut,"\n%s,%s %s\n",$1->name.c_str(),$3->name.c_str(),$4->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+=",";
temp+=$3->name.c_str();
temp+=" ";
temp+=$4->name.c_str();
$$ = new SymbolInfo(temp.c_str());
// vector
pType.push_back($3->name.c_str());
pID.push_back($4->name.c_str());
}
| parameter_list COMMA type_specifier
{
fprintf(logOut,"\nAt line no: %d parameter_list : parameter_list COMMA type_specifier\n",yylineno);
fprintf(logOut,"\n%s,%s\n",$1->name.c_str(),$3->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+=",";
temp+=$3->name.c_str();
$$ = new SymbolInfo(temp.c_str());
// vector
pType.push_back($3->name.c_str());
pID.push_back("un");
}
| type_specifier ID
{
fprintf(logOut,"\nAt line no: %d parameter_list : type_specifier ID\n",yylineno);
fprintf(logOut,"\n%s %s\n",$1->name.c_str(),$2->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+=" ";
temp+=$2->name.c_str();
$$ = new SymbolInfo(temp.c_str());
// vector
pType.push_back($1->name.c_str());
pID.push_back($2->name.c_str());
}
| type_specifier
{
fprintf(logOut,"\nAt line no: %d parameter_list : type_specifier\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
// vector
pType.push_back($1->name.c_str());
pID.push_back("un");
}
;
compound_statement : LCURL {
table->enterScope(logOut);
// parameters into table
for(it=pID.begin(),it2=pType.begin();it!=pID.end(),it2!=pType.end();++it,++it2)
{
SymbolInfo *node = new SymbolInfo(*it);
node->vtype = *it2;
if(table->search(*it)==NULL)
{
table->insert(node,"ID");
}
else
{
fprintf(errorOut,"\nError at line %d : Multiple Declaration of %s\n",yylineno,(*it).c_str());
errorCount++;
}
}
pType.clear();
pID.clear();
} statements RCURL
{
fprintf(logOut,"\nAt line no: %d compound_statement : LCURL statements RCURL\n",yylineno);
fprintf(logOut,"\n{\n%s\n}\n",$3->name.c_str());
string temp;
temp+="\{\n";
temp+=$3->name.c_str();
temp+="\n\}";
$$ = new SymbolInfo(temp.c_str());
table->printAllTable(logOut); table->exitScope(logOut);
}
| LCURL {table->enterScope(logOut);} RCURL
{
fprintf(logOut,"\nAt line no: %d compound_statement : LCURL RCURL\n",yylineno);
fprintf(logOut,"\n{\n}\n");
string temp;
temp+="\{\n\}";
$$ = new SymbolInfo(temp.c_str());
pType.clear();
pID.clear();
table->printAllTable(logOut); table->exitScope(logOut);
}
;
var_declaration : type_specifier declaration_list SEMICOLON
{
fprintf(logOut,"\nAt line no: %d var_declaration : type_specifier declaration_list SEMICOLON\n",yylineno);
fprintf(logOut,"\n%s %s;\n",$1->name.c_str(),$2->name.c_str());
string temp=$1->name.c_str();
temp+=" ";
temp+=$2->name.c_str();
temp+=";";
$$ = new SymbolInfo(temp.c_str());
// symboltable
for(vit=vID.begin();vit!=vID.end();++vit)
{
vInfo *vinfo = *vit;
if(table->search(vinfo->name.c_str())==NULL)
{
SymbolInfo *node = new SymbolInfo();
node->name = vinfo->name.c_str();
node->vinfo = new vInfo();
node->vinfo->name = vinfo->name.c_str();
node->vinfo->array = vinfo->array;
node->vtype = $1->name.c_str();
table->insert(node,"ID");
}
else
{
fprintf(errorOut,"\nError at line %d : Multiple Declaration of %s\n",yylineno,vinfo->name.c_str());
errorCount++;
}
}
vID.clear();
}
;
type_specifier : INT
{
fprintf(logOut,"\nAt line no: %d type_specifier : INT\n",yylineno);
fprintf(logOut,"\nint\n");
$$ = new SymbolInfo("int","INT");
}
| FLOAT
{
fprintf(logOut,"\nAt line no: %d type_specifier : FLOAT\n",yylineno);
fprintf(logOut,"\nfloat\n");
$$ = new SymbolInfo("float","FLOAT");
}
| VOID
{
fprintf(logOut,"\nAt line no: %d type_specifier : VOID\n",yylineno);
fprintf(logOut,"\nvoid\n");
$$ = new SymbolInfo("void","VOID");
}
;
declaration_list: ID
{
fprintf(logOut,"\nAt line no: %d declaration_list: ID\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $1->name.c_str();
vID.push_back(vinfo);
}
| declaration_list COMMA ID
{
fprintf(logOut,"\nAt line no: %d declaration_list: declaration_list COMMA ID\n",yylineno);
fprintf(logOut,"\n%s,%s\n",$1->getName().c_str(),$3->getName().c_str());
string temp;
temp=$1->name.c_str();
temp+=",";
temp+=$3->name.c_str();
$$ = new SymbolInfo(temp.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $3->name.c_str();
vID.push_back(vinfo);
}
| ID LTHIRD CONST_INT RTHIRD
{
fprintf(logOut,"\nAt line no: %d declaration_list: ID LTHIRD CONST_INT RTHIRD\n",yylineno);
string temp;
temp=$1->getName().c_str();
temp+="[";
temp+=$3->getName().c_str();
temp+="]";
fprintf(logOut,"\n%s\n",temp.c_str());
$$ = new SymbolInfo(temp.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $1->name.c_str();
vinfo->array = true;
vID.push_back(vinfo);
}
| declaration_list COMMA ID LTHIRD CONST_INT RTHIRD
{
fprintf(logOut,"\nAt line no: %d declaration_list: declaration_list COMMA ID LTHIRD CONST_INT RTHIRD\n",yylineno);
string temp;
temp=$1->getName().c_str();
temp+=",";
temp+=$3->getName().c_str();
temp+="[";
temp+=$5->getName().c_str();
temp+="]";
fprintf(logOut,"\n%s\n",temp.c_str());
$$ = new SymbolInfo(temp.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $3->name.c_str();
vinfo->array = true;
vID.push_back(vinfo);
}
| ID LTHIRD CONST_FLOAT RTHIRD
{
fprintf(logOut,"\nAt line no: %d declaration_list: ID LTHIRD CONST_INT RTHIRD\n",yylineno);
string temp;
temp=$1->getName().c_str();
temp+="[";
temp+="error";
temp+="]";
fprintf(logOut,"\n%s\n",temp.c_str());
$$ = new SymbolInfo(temp.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $1->name.c_str();
vinfo->array = true;
vID.push_back(vinfo);
fprintf(errorOut,"\nError at line %d : Non-integer Array Index\n",yylineno);
errorCount++;
}
| declaration_list COMMA ID LTHIRD CONST_FLOAT RTHIRD
{
fprintf(logOut,"\nAt line no: %d declaration_list: declaration_list COMMA ID LTHIRD CONST_INT RTHIRD\n",yylineno);
string temp;
temp=$1->getName().c_str();
temp+=",";
temp+=$3->getName().c_str();
temp+="[";
temp+="error";
temp+="]";
fprintf(logOut,"\n%s\n",temp.c_str());
$$ = new SymbolInfo(temp.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $3->name.c_str();
vinfo->array = true;
vID.push_back(vinfo);
fprintf(errorOut,"\nError at line %d : Non-integer Array Index\n",yylineno);
errorCount++;
}
;
statements : statement
{
fprintf(logOut,"\nAt line no: %d statements : statement\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
| statements statement
{
fprintf(logOut,"\nAt line no: %d statements : statements statement\n",yylineno);
fprintf(logOut,"\n%s\n%s\n",$1->name.c_str(),$2->name.c_str());
string temp;
temp=$1->name.c_str();
temp+="\n";
temp+=$2->name.c_str();
$$->name = temp.c_str();
}
;
statement : var_declaration
{
fprintf(logOut,"\nAt line no: %d statement : var_declaration\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
}
| expression_statement
{
fprintf(logOut,"\nAt line no: %d statement : expression_statement\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
}
| compound_statement
{
fprintf(logOut,"\nAt line no: %d statement : compound_statement\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
}
| FOR LPAREN expression_statement expression_statement expression RPAREN statement
{
fprintf(logOut,"\nAt line no: %d statement : FOR LPAREN expression_statement expression_statement expression RPAREN statement\n",yylineno);
fprintf(logOut,"\nfor(%s%s%s)\n%s\n",$3->name.c_str(),$4->name.c_str(),$5->name.c_str(),$7->name.c_str());
string temp="for(";
temp+=$3->name.c_str();
temp+=$4->name.c_str();
temp+=$5->name.c_str();
temp+=")\n";
temp+=$7->name.c_str();
$$ = new SymbolInfo(temp.c_str());
}
| IF LPAREN expression RPAREN statement %prec LOWER_THAN_ELSE
{
fprintf(logOut,"\nAt line no: %d statement : IF LPAREN expression RPAREN statement\n",yylineno);
fprintf(logOut,"\nif(%s)\n%s\n",$3->name.c_str(),$5->name.c_str());
string temp="if(";
temp+=$3->name.c_str();
temp+=")\n";
temp+=$5->name.c_str();
$$ = new SymbolInfo(temp.c_str());
}
| IF LPAREN expression RPAREN statement ELSE statement
{
fprintf(logOut,"\nAt line no: %d statement : IF LPAREN expression RPAREN statement ELSE statement\n",yylineno);
fprintf(logOut,"\nif(%s)\n%s\nelse\n%s\n",$3->name.c_str(),$5->name.c_str(),$7->name.c_str());
string temp="if(";
temp+=$3->name.c_str();
temp+=")\n";
temp+=$5->name.c_str();
temp+="\nelse\n";
temp+=$7->name.c_str();
$$ = new SymbolInfo(temp.c_str());
}
| WHILE LPAREN expression RPAREN statement
{
fprintf(logOut,"\nAt line no: %d statement : WHILE LPAREN expression RPAREN statement\n",yylineno);
fprintf(logOut,"\nwhile(%s)\n%s\n",$3->name.c_str(),$5->name.c_str());
string temp="while(";
temp+=$3->name.c_str();
temp+=")\n";
temp+=$5->name.c_str();
$$ = new SymbolInfo(temp.c_str());
}
| PRINTLN LPAREN ID RPAREN SEMICOLON
{
fprintf(logOut,"\nAt line no: %d statement : PRINTLN LPAREN ID RPAREN SEMICOLON\n",yylineno);
fprintf(logOut,"\nprintln(%s);\n",$3->name.c_str());
string temp="println(";
temp+=$3->name.c_str();
temp+=");";
$$ = new SymbolInfo(temp.c_str());
}
| RETURN expression SEMICOLON
{
fprintf(logOut,"\nAt line no: %d statement : RETURN expression SEMICOLON\n",yylineno);
fprintf(logOut,"\nreturn %s;\n",$2->name.c_str());
string temp="return ";
temp+=$2->name.c_str();
temp+=";";
$$ = new SymbolInfo(temp.c_str());
}
| error SEMICOLON
{
$$ = new SymbolInfo("Statement ERROR");
}
;
expression_statement : SEMICOLON
{
fprintf(logOut,"\nAt line no: %d expression_statement : SEMICOLON\n",yylineno);
fprintf(logOut,"\n\;\n");
string temp=";";
$$ = new SymbolInfo(temp.c_str());
}
| expression SEMICOLON
{
fprintf(logOut,"\nAt line no: %d expression_statement : expression SEMICOLON\n",yylineno);
fprintf(logOut,"\n%s\;\n",$1->name.c_str());
string temp=$1->name.c_str();
temp+=";";
$$ = new SymbolInfo(temp.c_str());
}
;
variable : ID
{
fprintf(logOut,"\nAt line no: %d variable : ID\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
SymbolInfo *node = table->searchAll($1->name.c_str());
if(node==NULL)
{
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = "void";
}
else
{
$$ = table->searchAll($1->name.c_str());
}
//type check
if(node==NULL)
{
fprintf(errorOut,"\nError at line %d : Undeclared variable %s\n",yylineno,$1->name.c_str());
errorCount++;
}
else
{
if(node->function)
{
fprintf(errorOut,"\nError at line %d : %s is declared as a function at line %d\n",yylineno,$1->name.c_str(),node->lineno);
errorCount++;
}
else if(node->vinfo!=NULL and node->vinfo->array)
{
fprintf(errorOut,"\nError at line %d : %s is declared as array at line %d\n",yylineno,$1->name.c_str(),node->lineno);
errorCount++;
}
}
}
| ID LTHIRD expression RTHIRD
{
fprintf(logOut,"\nAt line no: %d variable : ID LTHIRD expression RTHIRD\n",yylineno);
fprintf(logOut,"\n%s[%s]\n",$1->name.c_str(),$3->name.c_str());
string temp;
temp+=$1->name.c_str();
temp+="[";
temp+=$3->name.c_str();
temp+="]";
//$$ = new SymbolInfo(temp.c_str());
// type check
SymbolInfo *node = table->searchAll($1->name.c_str());
if(node==NULL)
{
$$ = new SymbolInfo(temp.c_str());
$$->vtype = "void";
}
else
{
$$ = new SymbolInfo(temp.c_str());
$$->vtype = node->vtype;
}
if(node==NULL)
{
fprintf(errorOut,"\nError at line %d : Undeclared variable %s\n",yylineno,$1->name.c_str());
errorCount++;
}
else
{
if(node->function)
{
fprintf(errorOut,"\nError at line %d : %s is declared as a function at line %d\n",yylineno,$1->name.c_str(),node->lineno);
errorCount++;
}
else if(node->vinfo!=NULL and !node->vinfo->array)
{
fprintf(errorOut,"\nError at line %d : %s is not declared as array at line %d\n",yylineno,$1->name.c_str(),node->lineno);
errorCount++;
}
else
{
if($3->vtype!="int")
{
fprintf(errorOut,"\nError at Line %d : Non-integer Array Index\n",yylineno);
errorCount++;
}
}
}
}
;
expression : logic_expression
{
fprintf(logOut,"\nAt line no: %d expression : logic_expression\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = $1->vtype;
}
| variable ASSIGNOP logic_expression
{
fprintf(logOut,"\nAt line no: %d expression : variable ASSIGNOP logic_expression\n",yylineno);
fprintf(logOut,"\n%s=%s\n",$1->name.c_str(),$3->name.c_str());
string temp=$1->name.c_str();
temp+="=";
temp+=$3->name.c_str();
$$ = new SymbolInfo(temp.c_str());
if($1->vtype!=$3->vtype && $3->vtype!="void" && $1->vtype!="void")
{
fprintf(errorOut,"\nError at line %d : Type mismatch\n",yylineno);
errorCount++;
$$->vtype = "void";
}
else
{
$$->vtype = $1->vtype;
}
}
;
logic_expression : rel_expression
{
fprintf(logOut,"\nAt line no: %d logic_expression : rel_expression\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = $1->vtype;
}
| rel_expression LOGICOP rel_expression
{
fprintf(logOut,"\nAt line no: %d logic_expression : rel_expression LOGICOP rel_expression\n",yylineno);
fprintf(logOut,"\n%s%s%s\n",$1->name.c_str(),$2->name.c_str(),$3->name.c_str());
string temp=$1->name.c_str();
temp+=$2->name.c_str();
temp+=$3->name.c_str();
$$ = new SymbolInfo(temp.c_str());
if($1->vtype=="void" || $3->vtype=="void")
{
$$->vtype = "void";
}
else
{
$$->vtype = "int";
}
}
;
rel_expression : simple_expression
{
fprintf(logOut,"\nAt line no: %d rel_expression : simple_expression\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = $1->vtype;
}
| simple_expression RELOP simple_expression
{
fprintf(logOut,"\nAt line no: %d rel_expression : simple_expression RELOP simple_expression\n",yylineno);
fprintf(logOut,"\n%s%s%s\n",$1->name.c_str(),$2->name.c_str(),$3->name.c_str());
string temp=$1->name.c_str();
temp+=$2->name.c_str();
temp+=$3->name.c_str();
$$ = new SymbolInfo(temp.c_str());
if($1->vtype=="void" || $3->vtype=="void")
{
$$->vtype = "void";
}
else
{
$$->vtype = "int";
}
}
;
simple_expression : term
{
fprintf(logOut,"\nAt line no: %d simple_expression : term\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = $1->vtype;
}
| simple_expression ADDOP term
{
fprintf(logOut,"\nAt line no: %d simple_expression : simple_expression ADDOP term\n",yylineno);
fprintf(logOut,"\n%s%s%s\n",$1->name.c_str(),$2->name.c_str(),$3->name.c_str());
string temp=$1->name.c_str();
temp+=$2->name.c_str();
temp+=$3->name.c_str();
$$ = new SymbolInfo(temp.c_str());
if($1->vtype=="int" && $3->vtype=="int")
{
$$->vtype = "int";
}
else if($1->vtype=="void" || $3->vtype=="void")
{
$$->vtype = "void";
}
else
{
$$->vtype = "float";
}
}
;
term : unary_expression
{
fprintf(logOut,"\nAt line no: %d term : unary_expression\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = $1->vtype;
}
| term MULOP unary_expression
{
fprintf(logOut,"\nAt line no: %d term : term MULOP unary_expression\n",yylineno);
fprintf(logOut,"\n%s%s%s\n",$1->name.c_str(),$2->name.c_str(),$3->name.c_str());
string temp=$1->name.c_str();
temp+=$2->name.c_str();
temp+=$3->name.c_str();
$$ = new SymbolInfo(temp.c_str());
if($1->vtype=="int" && $3->vtype=="int")
{
$$->vtype = "int";
}
else if($1->vtype=="void" || $3->vtype=="void")
{
$$->vtype = "void";
}
else
{
$$->vtype = "float";
}
// modulas
if($2->name == "%")
{
if($1->vtype!="int" || $3->vtype!="int")
{
fprintf(errorOut,"\nError at line %d : Non-Integer operand on modulus operator\n",yylineno);
errorCount++;
$$->vtype = "void";
}
}
}
;
unary_expression : ADDOP unary_expression
{
fprintf(logOut,"\nAt line no: %d unary_expression : ADDOP unary_expression\n",yylineno);
fprintf(logOut,"\n%s%s\n",$1->name.c_str(),$2->name.c_str());
string temp=$1->name.c_str();
temp+=$2->name.c_str();
$$ = new SymbolInfo(temp.c_str());
$$->vtype = $2->vtype;
}
| NOT unary_expression
{
fprintf(logOut,"\nAt line no: %d unary_expression : NOT unary_expression\n",yylineno);
fprintf(logOut,"\n!%s\n",$2->name.c_str());
string temp="!";
temp+=$2->name.c_str();
$$ = new SymbolInfo(temp.c_str());
$$->vtype = "int";
}
| factor
{
fprintf(logOut,"\nAt line no: %d unary_expression : factor\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = $1->vtype;
}
;
factor : variable
{
fprintf(logOut,"\nAt line no: %d factor : variable\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
$$->vtype = $1->vtype;
}
| ID LPAREN argument_list RPAREN // oo
{
fprintf(logOut,"\nAt line no: %d factor : ID LPAREN argument_list RPAREN\n",yylineno);
fprintf(logOut,"\n%s(%s)\n",$1->name.c_str(),$3->name.c_str());
string temp=$1->name.c_str();
temp+="(";
temp+=$3->name.c_str();
temp+=")";
$$ = new SymbolInfo(temp.c_str());
//function
SymbolInfo *node = table->searchAll($1->name.c_str());