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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,*asmOut;
int errorCount;
/* interfacing in lexer */
extern int yylineno;
void yyerror(char *s){
fprintf(errorOut,"\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,varID;
vector<vInfo*> vID;
vector<string> :: iterator it,it2,argit;
vector<vInfo*> :: iterator vit;
string tempReturn;
string dataSegment;
int labelCount=0;
int tempCount=0;
char *newLabel()
{
char *lb= new char[4];
strcpy(lb,"L");
char b[3];
sprintf(b,"%d", labelCount);
labelCount++;
strcat(lb,b);
return lb;
}
char *newTemp()
{
char *t= new char[4];
strcpy(t,"t");
char b[3];
sprintf(b,"%d", tempCount);
tempCount++;
strcat(t,b);
return t;
}
string to_upper(string str)
{
transform(str.begin(), str.end(), str.begin(), static_cast<int(*)(int)>(toupper));
return str;
}
%}
%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());
$$ = new SymbolInfo($1->name.c_str());
//asm
$$->code = $1->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.c_str());
//final
asmOut = fopen("code.asm","w");
fprintf(asmOut,".MODEL SMALL\n\n.STACK 100h\n\n.DATA\n");
fprintf(asmOut,"%s",dataSegment.c_str());
char temp[3];
for(int i=0;i<tempCount;i++)
{
sprintf(temp,"%d",i);
string out = "\tt"+string(temp)+" DW ?\n";
fprintf(asmOut,"%s",out.c_str());
}
fprintf(asmOut,"\ttempPOP DW ?\n");
fprintf(asmOut,"\n.CODE\n\n");
fprintf(asmOut,"%s\n",$$->code.c_str());
//OUTDEC function
char c;
FILE *fp = fopen("OUTDEC","r");
while ((c = fgetc(fp)) != EOF)
fputc(c,asmOut);
fprintf(asmOut,"\t\nEND MAIN\n");
}
;
program : program unit
{
fprintf(logOut,"\nAt line no: %d program : program unit\n",yylineno);
fprintf(logOut,"\n%s\n%s\n",$1->name.c_str(),$2->name.c_str());
string temp=$1->name.c_str();
temp+="\n";
temp+=$2->name.c_str();
$$ = new SymbolInfo(temp.c_str());
//asm
$$->code = $1->code;
$$->code += "\n\n";
$$->code += $2->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.c_str());
}
| unit
{
fprintf(logOut,"\nAt line no: %d program : unit\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
//asm
$$->code = $1->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.c_str());
}
;
unit : var_declaration
{
fprintf(logOut,"\nAt line no: %d unit : var_declaration\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
| func_declaration
{
fprintf(logOut,"\nAt line no: %d unit : func_declaration\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
}
| func_definition
{
fprintf(logOut,"\nAt line no: %d unit : func_definition\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
//asm
$$->code = $1->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.c_str());
}
| error SEMICOLON
{
pID.clear();
pType.clear();
vID.clear();
$$ = 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();
}
;
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->info->tableID = table->getID()+1; //asm
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->info->tableID = table->getID()+1; //asm
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
{
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();
$$ = new SymbolInfo(temp.c_str());
if($1->name!=tempReturn && $1->name!="void")
{
fprintf(errorOut,"\nError at line %d : Return type didn't match on function %s\n",$2->lineno,$2->name.c_str());
errorCount++;
}
if($1->name=="void")
{
if(tempReturn!="")
{
fprintf(errorOut,"\nError at line %d : Return in void function %s\n",$2->lineno,$2->name.c_str());
errorCount++;
}
}
//asm
$$->code += to_upper($2->name) + " PROC\n";
if($2->name=="main")
{
$$->code += "\tMOV AX,@DATA\n\tMOV DS,AX\n\n";
if($7->code.rfind("POP DX")!=-1)
{
$7->code.erase($7->code.rfind("POP DX"));
}
}
//save register
if($2->name!="main")
{
$$->code += "\tPUSH AX\n\tPUSH BX\n\tPUSH CX\n\tPUSH DX\n";
}
$$->code += $7->code;
if(tempReturn!="int" && tempReturn!="float" && $2->name!="main")
{
$$->code += "\tPOP DX\n\tPOP CX\n\tPOP BX\n\tPOP AX\n";
$$->code += "\tRET\n";
}
if($2->name=="main")
{
$$->code += "\n\tMOV AH,4Ch\n\tINT 21h\n";
}
$$->code += to_upper($2->name) + " ENDP\n";
fprintf(logOut,$$->code.c_str());
tempReturn="";
//new
/*SymbolInfo *tempNode=table->search($2->name.c_str());
if(tempNode!=NULL and tempNode->info!=NULL)
{
tempNode->info->varID = varID;
}
varID.clear();*/
}
| 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->info->tableID = table->getID()+1; //asm
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->info->tableID = table->getID()+1; //asm
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
{
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();
$$ = new SymbolInfo(temp.c_str());
if($1->name!=tempReturn && $1->name!="void")
{
fprintf(errorOut,"\nError at line %d : Return type didn't match on function %s\n",$2->lineno,$2->name.c_str());
errorCount++;
}
if($1->name=="void")
{
if(tempReturn!="")
{
fprintf(errorOut,"\nError at line %d : Return in void function %s\n",$2->lineno,$2->name.c_str());
errorCount++;
}
}
//asm
$$->code += to_upper($2->name) + " PROC\n";
if($2->name=="main")
{
$$->code += "\tMOV AX,@DATA\n\tMOV DS,AX\n\n";
if($6->code.rfind("POP DX")!=-1)
{
$6->code.erase($6->code.rfind("POP DX"));
}
}
//save register
if($2->name!="main")
{
$$->code += "\tPUSH AX\n\tPUSH BX\n\tPUSH CX\n\tPUSH DX\n";
}
$$->code += $6->code;
if(tempReturn!="int" && tempReturn!="float" && $2->name!="main")
{
$$->code += "\tPOP DX\n\tPOP CX\n\tPOP BX\n\tPOP AX\n";
$$->code += "\tRET\n";
}
if($2->name=="main")
{
$$->code += "\n\tMOV AH,4Ch\n\tINT 21h\n";
}
$$->code += to_upper($2->name) + " ENDP\n";
fprintf(logOut,$$->code.c_str());
tempReturn="";
//new
/*SymbolInfo *tempNode=table->search($2->name.c_str());
if(tempNode!=NULL and tempNode->info!=NULL)
{
tempNode->info->varID = varID;
}
varID.clear();*/
}
| 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());
$$ = new SymbolInfo($1->name.c_str());
// vector
pType.push_back($1->name.c_str());
pID.push_back("un");
}
;
compound_statement : LCURL {
table->enterScope(logOut);
// parameters into table
for(it=pID.begin(),it2=pType.begin();it!=pID.end(),it2!=pType.end();++it,++it2)
{
SymbolInfo *node = new SymbolInfo(*it);
node->vtype = *it2;
if(table->search(*it)==NULL)
{
node->vinfo = new vInfo();
node->vinfo->array = false;
table->insert(node,"ID");
}
else
{
fprintf(errorOut,"\nError at line %d : Multiple Declaration of %s\n",yylineno,(*it).c_str());
errorCount++;
}
//asm
int tableID = table->searchID((*it).c_str());
char var[30];
sprintf(var,"%s%d",(*it).c_str(),tableID);
dataSegment+="\t"+string(var)+" DW ?\n";
}
pType.clear();
pID.clear();
} statements RCURL
{
fprintf(logOut,"\nAt line no: %d compound_statement : LCURL statements RCURL\n",yylineno);
fprintf(logOut,"\n{\n%s\n}\n",$3->name.c_str());
string temp;
temp+="\{\n";
temp+=$3->name.c_str();
temp+="\n\}";
$$ = new SymbolInfo(temp.c_str());
table->printAllTable(logOut); table->exitScope(logOut);
///asm
$$->code = $3->code;
$$->symbol = $3->code;
fprintf(logOut,$$->code.c_str());
}
| LCURL {table->enterScope(logOut);} RCURL
{
fprintf(logOut,"\nAt line no: %d compound_statement : LCURL RCURL\n",yylineno);
fprintf(logOut,"\n{\n}\n");
string temp;
temp+="\{\n\}";
$$ = new SymbolInfo(temp.c_str());
pType.clear();
pID.clear();
table->printAllTable(logOut); table->exitScope(logOut);
///asm
fprintf(logOut,$$->code.c_str());
}
;
//done
var_declaration : type_specifier declaration_list SEMICOLON
{
fprintf(logOut,"\nAt line no: %d var_declaration : type_specifier declaration_list SEMICOLON\n",yylineno);
fprintf(logOut,"\n%s %s;\n",$1->name.c_str(),$2->name.c_str());
string temp=$1->name.c_str();
temp+=" ";
temp+=$2->name.c_str();
temp+=";";
$$ = 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");
//asm
if(vinfo->array)
{
int tableID = table->searchID(vinfo->name);
char var[30];
sprintf(var,"%s%d",vinfo->name.c_str(),tableID);
dataSegment+="\t"+string(var)+" DW " + vinfo->arraySize +" DUP (?)\n";
//varID.push_back(var); //new
}
else
{
int tableID = table->searchID(vinfo->name);
char var[30];
sprintf(var,"%s%d",vinfo->name.c_str(),tableID);
dataSegment+="\t"+string(var)+" DW ?\n";
//varID.push_back(var); //new
}
}
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;
vinfo->arraySize =$3->name;
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());
$$ = new SymbolInfo(temp.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $3->name.c_str();
vinfo->array = true;
vinfo->arraySize = $5->name;
vID.push_back(vinfo);
}
| ID LTHIRD CONST_FLOAT RTHIRD
{
fprintf(logOut,"\nAt line no: %d declaration_list: ID LTHIRD CONST_INT RTHIRD\n",yylineno);
string temp;
temp=$1->getName().c_str();
temp+="[";
temp+="error";
temp+="]";
fprintf(logOut,"\n%s\n",temp.c_str());
$$ = 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());
$$ = new SymbolInfo(temp.c_str());
// vector
vInfo *vinfo = new vInfo();
vinfo->name = $3->name.c_str();
vinfo->array = true;
vID.push_back(vinfo);
fprintf(errorOut,"\nError at line %d : Non-integer Array Index\n",yylineno);
errorCount++;
}
;
statements : statement
{
fprintf(logOut,"\nAt line no: %d statements : statement\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
//asm
$$->code = $1->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.c_str());
}
| statements statement
{
fprintf(logOut,"\nAt line no: %d statements : statements statement\n",yylineno);
fprintf(logOut,"\n%s\n%s\n",$1->name.c_str(),$2->name.c_str());
string temp;
temp=$1->name.c_str();
temp+="\n";
temp+=$2->name.c_str();
$$ = new SymbolInfo(temp.c_str());
//asm
$$->code = $1->code;
$$->code += $2->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.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());
//asm
$$->code = $1->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.c_str());
}
| compound_statement
{
fprintf(logOut,"\nAt line no: %d statement : compound_statement\n",yylineno);
fprintf(logOut,"\n%s\n",$1->name.c_str());
$$ = new SymbolInfo($1->name.c_str());
//asm
$$->code = $1->code;
$$->symbol = $1->symbol;
fprintf(logOut,$$->code.c_str());
}
| FOR LPAREN expression_statement expression_statement expression RPAREN statement
{
fprintf(logOut,"\nAt line no: %d statement : FOR LPAREN expression_statement expression_statement expression RPAREN statement\n",yylineno);
fprintf(logOut,"\nfor(%s%s%s)\n%s\n",$3->name.c_str(),$4->name.c_str(),$5->name.c_str(),$7->name.c_str());
string temp="for(";
temp+=$3->name.c_str();
temp+=$4->name.c_str();
temp+=$5->name.c_str();
temp+=")\n";
temp+=$7->name.c_str();
$$ = new SymbolInfo(temp.c_str());
//asm
char *label1 = newLabel();
char *label2 = newLabel();
$$->code += $3->code; //init
$$->code += string(label1) + ":\n";
$$->code += $4->code; //condition
$$->code += "\tMOV AX," + $4->symbol + "\n"; // check condition
$$->code += "\tCMP AX,0\n";
$$->code += "\tJE " + string(label2) + "\n"; // false then end
$$->code += $7->code; // statement
$$->code += $5->code; // inc/dec
$$->code += "\tJMP " + string(label1) + "\n";
$$->code += string(label2) + ":\n";
fprintf(logOut,$$->code.c_str());
}
| IF LPAREN expression RPAREN statement %prec LOWER_THAN_ELSE
{
fprintf(logOut,"\nAt line no: %d statement : IF LPAREN expression RPAREN statement\n",yylineno);
fprintf(logOut,"\nif(%s)\n%s\n",$3->name.c_str(),$5->name.c_str());
string temp="if(";
temp+=$3->name.c_str();
temp+=")\n";
temp+=$5->name.c_str();
$$ = new SymbolInfo(temp.c_str());
// asm
char *label1 = newLabel();
$$->code += $3->code;
$$->code += "\tMOV AX," + $3->symbol + "\n"; // check condition
$$->code += "\tCMP AX,0\n";
$$->code += "\tJE " + string(label1) + "\n"; // false then end
$$->code += $5->code;
$$->code += string(label1) + ":\n";
fprintf(logOut,$$->code.c_str());
}
| IF LPAREN expression RPAREN statement ELSE statement
{
fprintf(logOut,"\nAt line no: %d statement : IF LPAREN expression RPAREN statement ELSE statement\n",yylineno);
fprintf(logOut,"\nif(%s)\n%s\nelse\n%s\n",$3->name.c_str(),$5->name.c_str(),$7->name.c_str());
string temp="if(";
temp+=$3->name.c_str();
temp+=")\n";
temp+=$5->name.c_str();
temp+="\nelse\n";
temp+=$7->name.c_str();
$$ = new SymbolInfo(temp.c_str());
// asm
char *label1 = newLabel();
char *label2 = newLabel();
$$->code += $3->code;
$$->code += "\tMOV AX," + $3->symbol + "\n"; // check condition
$$->code += "\tCMP AX,0\n";
$$->code += "\tJE " + string(label1) + "\n"; // false
$$->code += $5->code;
$$->code += "\tJMP " + string(label2) + "\n"; // jump to end
$$->code += string(label1) + ":\n";
$$->code += $7->code;
$$->code += string(label2) + ":\n";
fprintf(logOut,$$->code.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();
$$ = new SymbolInfo(temp.c_str());
//asm
char *label1 = newLabel();
char *label2 = newLabel();
$$->code += string(label1) + ":\n"; //label;
$$->code += $3->code; //condition
$$->code += "\tMOV AX," + $3->symbol + "\n"; // check condition
$$->code += "\tCMP AX,0\n";
$$->code += "\tJE " + string(label2) + "\n"; // false then end
$$->code += $5->code; // statement
$$->code += "\tJMP " + string(label1) + "\n";
$$->code += string(label2) + ":\n";
fprintf(logOut,$$->code.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+=");";
$$ = new SymbolInfo(temp.c_str());
// asm
int tableID = table->searchID($3->name);
char var[30];
sprintf(var,"%s%d",$3->name.c_str(),tableID);
$$->code += "\tMOV AX," + string(var) + "\n";
$$->code += "\tCALL OUTDEC\n";
$$->code += "\tMOV AH,2\n\tMOV DL,0Ah\n\tINT 21h\n\tMOV DL,0Dh\n\tINT 21H\n";
fprintf(logOut,$$->code.c_str());
}
| RETURN expression SEMICOLON
{
fprintf(logOut,"\nAt line no: %d statement : RETURN expression SEMICOLON\n",yylineno);
fprintf(logOut,"\nreturn %s;\n",$2->name.c_str());
string temp="return ";
temp+=$2->name.c_str();
temp+=";";
$$ = new SymbolInfo(temp.c_str());
tempReturn=$2->vtype;
//asm
$$->code += $2->code;
$$->code += "\tPOP DX\n\tPOP CX\n\tPOP BX\n\tPOP AX\n";
$$->code += "\tPOP tempPOP\n";
$$->code += "\tPUSH "+$2->symbol + "\n";
$$->code += "\tPUSH tempPOP\n";
$$->code += "\tRET\n";