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compilateur.cpp
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compilateur.cpp
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//--------------------------------------------------------------------------------------|
//---- Auteur : Aubertin Emmanuel | For: aTHO_compiler ----|
//---- Description : A compiler from a very simple Pascal-like structured ----|
//---- language LL(k) to 64-bit 80x86 Assembly langage ----|
//---- Contact : https://athomisos.fr ----|
//--------------------------------------------------------------------------------------|
// SYSCALL => printf SYS_read | gcc -include sys/syscall.h -E -
// => vim /usr/include/x86_64-linux-gnu/asm/unistd_64.h
#include <string>
#include <iostream>
#include <cstdlib>
#include <set>
#include <FlexLexer.h>
#include "tokeniser.h"
#include <cstring>
#include <fstream>
#include <map>
#include <list>
#include <algorithm>
std::string PROGNAME="aTHO_ Compiler";
std::string FILE_NAME= __FILE__;
std::string RELEASE="Revision 1.0 | Last update 23 jan 2022";
std::string AUTHOR="Aubertin Emmanuel";
std::string COPYRIGHT="(c) 2021 "+ AUTHOR + " from https://athomisos.fr";
void print_release() {
std::cout << RELEASE << COPYRIGHT << std::endl;
}
using namespace std;
//Enable All DEBUG mode
//#define DEBUG // if define the asm wil #be have a lot of useless com
//DEBUG DISPLAY
//#define DEBUGDISP
enum OPREL {EQU, DIFF, INF, SUP, INFE, SUPE, WTFR};
enum OPADD {ADD, SUB, OR, WTFA};
enum OPMUL {MUL, DIV, MOD, AND ,WTFM};
enum TYPE {INT, BOOL, CHAR, DOUBLE, ARRAY, STR};
// Prototypage :
void IfStatement(void);
void WhileStatement(void);
void ForStatement(void);
void BlockStatement(void);
void DisplayStatement(void);
void ProcedureStatement(void);
void VarStatement(void);
TYPE Expression(void);
int getLength(string);
//VARTYPE Number(void);
bool isFunc = false;
int strcounter = 0;
size_t tempPosition; // !! Need to be reset after all use
string tempBlock;
string OutDeclarationPart;
string OutStatementPart;
string OutFunctionPart;
TOKEN current; // Current token
FlexLexer* lexer = new yyFlexLexer; // This is the flex tokeniser
// tokens can be read using lexer->yylex()
// lexer->yylex() returns the type of the lexicon entry (see enum TOKEN in tokeniser.h)
// and lexer->YYText() returns the lexicon entry as a string
set<string> DeclaredFunc;
map<string, enum TYPE> DeclaredVariables; // Store declared variables and their types
map<string, unsigned long long> SizeDeclaredArrays; // Store the size of the declared arrays
map<string, enum TYPE> TypeDeclaredArrays; // Store the type of the declared arrays
unsigned long TagNumber=0;
bool IsDeclared(const char *id){
return DeclaredVariables.find(id) != DeclaredVariables.end();
}
bool IsFunc(const char *id){
return DeclaredFunc.find(id) != DeclaredFunc.end();
}
void Error(string s){
cerr << "Ligne n°" << lexer->lineno() << ", lu : '" << lexer->YYText() << "'(" << current << "), mais ";
cerr << s << endl;
exit(-1);
}
// Program := [DeclarationPart] StatementPart
// DeclarationPart := "[" Letter {"," Letter} "]"
// StatementPart := Statement {";" Statement} "."
// Statement := AssignementStatement
// AssignementStatement := Letter "=" Expression
// Expression := SimpleExpression [RelationalOperator SimpleExpression]
// SimpleExpression := Term {AdditiveOperator Term}
// Term := Factor {MultiplicativeOperator Factor}
// Factor := Number | Letter | "(" Expression ")"| "!" Factor
// Number := Digit{Digit}
// AdditiveOperator := "+" | "-" | " || "
// MultiplicativeOperator := "*" | "/" | "%" | " && "
// RelationalOperator := " == " | " != " | "<" | ">" | "<=" | ">="
// Digit := "0"|"1"|"2"|"3"|"4"|"5"|"6"|"7"|"8"|"9"
// Letter := "a"|...|"z"
TYPE Identifier(void){
if(!IsDeclared(lexer->YYText())){
cerr << "Erreur : Variable '"<<lexer->YYText()<<"' non déclarée"<<endl;
exit(-1);
}
enum TYPE VarType = DeclaredVariables[lexer->YYText()];
if(isFunc){
OutFunctionPart += "\tpush ";
OutFunctionPart += lexer->YYText();
OutFunctionPart += "\n";
} else {
OutStatementPart += "\tpush ";
OutStatementPart += lexer->YYText();
OutStatementPart += "\n";
}
current=(TOKEN) lexer->yylex();
return VarType;
}
TYPE Number(void){
if(isFunc){
OutFunctionPart += "\tpush $" + to_string(atoi(lexer->YYText())) + "\n";
} else {
OutStatementPart += "\tpush $" + to_string(atoi(lexer->YYText())) + "\n";
}
current=(TOKEN) lexer->yylex();
return INT;
}
TYPE Factor(void){
enum TYPE typeExp;
if(current == RPARENT){
current=(TOKEN) lexer->yylex();
typeExp = Expression();
if(current != LPARENT)
Error("')' était attendu"); // ")" expected
else
current=(TOKEN) lexer->yylex();
}
else{
if (current == NUMBER){
typeExp = Number();
} else {
if(current == ID){
typeExp = Identifier();
} else {
Error("'(' ou chiffre ou lettre attendue");
}
}
}
return typeExp;
}
// MultiplicativeOperator := "*" | "/" | "%" | " && "
OPMUL MultiplicativeOperator(void){
OPMUL opmul;
if(strcmp(lexer->YYText(),"*") == 0)
opmul=MUL;
else if(strcmp(lexer->YYText(),"/") == 0)
opmul=DIV;
else if(strcmp(lexer->YYText(),"%") == 0)
opmul=MOD;
else if(strcmp(lexer->YYText()," && ") == 0)
opmul=AND;
else opmul=WTFM;
current=(TOKEN) lexer->yylex();
return opmul;
}
// Term := Factor {MultiplicativeOperator Factor}
TYPE Term(void){
TYPE firstFactor, secondFactor;
OPMUL mulop;
firstFactor = Factor();
while(current == MULOP){
mulop=MultiplicativeOperator(); // Save operator in local variable
secondFactor = Factor();
if(firstFactor != secondFactor){ // If not same type
Error("Type non compatible !");
}
if(isFunc){
OutFunctionPart +="\tpop %rbx\n\
\tpop %rax\n"; // get second operand
} else {
OutStatementPart += "\tpop %rbx\n\
\tpop %rax\n"; // get second operand
}
switch(mulop){
case AND:
if(isFunc){
OutFunctionPart += "\tmulq %rbx\n\
\tpush %rax\t# AND\n"; // store result
} else {
OutStatementPart += "\tmulq %rbx\n\
\tpush %rax\t# AND\n"; // store result
}
break;
case MUL:
if(isFunc){
OutFunctionPart += "\tmulq %rbx\n\
\tpush %rax\t# MUL\n"; // store result
} else {
OutStatementPart += "\tmulq %rbx\n\
\tpush %rax\t# MUL\n"; // store result
}
break;
case DIV:
if(isFunc){
OutFunctionPart +="\tmovq $0, %rdx\n\
\tdiv %rbx\n\
\tpush %rax\t# DIV\n"; // store result
} else {
OutStatementPart += "\tmovq $0, %rdx\n\
\tdiv %rbx\n\
\tpush %rax\t# DIV\n"; // store result
}
break;
case MOD:
if(isFunc){
OutFunctionPart += "\tmovq $0, %rdx\n\
\tdiv %rbx\n\
\tpush %rdx\t# MOD\n"; // store result
} else {
OutStatementPart += "\tmovq $0, %rdx\n\
\tdiv %rbx\n\
\tpush %rdx\t# MOD\n"; // store result
}
break;
default:
Error("opérateur multiplicatif attendu");
}
}
return firstFactor;
}
// AdditiveOperator := "+" | "-" | " || "
OPADD AdditiveOperator(void){
OPADD opadd;
if(strcmp(lexer->YYText(),"+") == 0)
opadd=ADD;
else if(strcmp(lexer->YYText(),"-") == 0)
opadd=SUB;
else if(strcmp(lexer->YYText()," || ") == 0)
opadd=OR;
else opadd=WTFA;
current=(TOKEN) lexer->yylex();
return opadd;
}
// SimpleExpression := Term {AdditiveOperator Term}
TYPE SimpleExpression(void){
#ifdef DEBUG
std::cout << endl << "# IN void SimpleExpression(void)" << endl;
#endif
TYPE firstTerm, secondTerm;
OPADD adop;
firstTerm = Term();
while(current == ADDOP){
adop=AdditiveOperator(); // Save operator in local variable
secondTerm = Term();
if(firstTerm != secondTerm){// If not same type
Error("Type non compatible !");
}
if(isFunc){
OutFunctionPart += "\tpop %rbx\n\
\tpop %rax\n"; // get second operand
} else {
OutStatementPart += "\tpop %rbx\n\
\tpop %rax\n"; // get second operand
}
switch(adop){
case OR:
if(isFunc){
OutFunctionPart +="\taddq %rbx, %rax\t# OR\n";// operand1 OR operand2
} else {
OutStatementPart += "\taddq %rbx, %rax\t# OR\n";// operand1 OR operand2
}
break;
case ADD:
if(isFunc){
OutFunctionPart += "\taddq %rbx, %rax\t# ADD\n"; // add both operands
} else {
OutStatementPart += "\taddq %rbx, %rax\t# ADD\n"; // add both operands
}
break;
case SUB:
if(isFunc){
OutFunctionPart +="\tsubq %rbx, %rax\t# SUB\n"; // substract both operands
} else {
OutStatementPart +="\tsubq %rbx, %rax\t# SUB\n"; // substract both operands
}
break;
default:
Error("opérateur additif inconnu");
}
if(isFunc){
OutFunctionPart + "\tpush %rax\n"; // store result
} else {
OutStatementPart += "\tpush %rax\n"; // store result
}
}
return firstTerm;
}
// DeclarationPart := "[" Ident {"," Ident} "]"
void DeclarationPart(void){
TYPE currentTYPE = INT;
string VarName;
OutDeclarationPart += "\t.data\n\
FormatString: .string \"%c\" # For char\n\
FormatString1: .string \"%llu\\n\"\n\
FormatString2:\t.string \"%lf\" # For Float\n\
TrueSTR:\t.string \"\033[1mTRUE\033[0m\"\n\
FalseSTR:\t.string \"\033[1mFALSE\033[0m\"\n";
if(current == RBRACKET){
#ifdef DEBUG
std::cout << "# IN [" << endl;
#endif
OutDeclarationPart += "\t.align 8\n";
current=(TOKEN) lexer->yylex();
if(current != ID)
Error("Un identificater était attendu");
OutDeclarationPart += lexer->YYText();
VarName = (string)lexer->YYText();
OutDeclarationPart += ":\t.quad 0\n";
DeclaredVariables[VarName]=currentTYPE;
//DeclaredVariables.insert(lexer->YYText());
VarName = (string)lexer->YYText();
DeclaredVariables[VarName]=currentTYPE;
// add in map for type
current=(TOKEN) lexer->yylex();
while(current == COMMA){
current=(TOKEN) lexer->yylex();
if(current != ID)
Error("Un identificateur était attendu");
OutDeclarationPart += lexer->YYText();
OutDeclarationPart += ":\t.quad 0\n";
//DeclaredVariables.insert(lexer->YYText());
VarName = (string)lexer->YYText();
DeclaredVariables[VarName]=currentTYPE;
// need to add map of aTHOVar
current=(TOKEN) lexer->yylex();
}
current=(TOKEN) lexer->yylex();
}
}
// RelationalOperator := " = " | " != " | "<" | ">" | "<=" | ">="
OPREL RelationalOperator(void){
OPREL oprel;
if(strcmp(lexer->YYText(),"=") == 0)
oprel=EQU;
else if(strcmp(lexer->YYText(),"!=") == 0)
oprel=DIFF;
else if(strcmp(lexer->YYText(),"<") == 0)
oprel=INF;
else if(strcmp(lexer->YYText(),">") == 0)
oprel=SUP;
else if(strcmp(lexer->YYText(),"<=") == 0)
oprel=INFE;
else if(strcmp(lexer->YYText(),">=") == 0)
oprel=SUPE;
else oprel=WTFR;
current=(TOKEN) lexer->yylex();
return oprel;
}
// Expression := SimpleExpression [RelationalOperator SimpleExpression]
TYPE Expression(void){
TYPE firstPart, secondPart;
#ifdef DEBUG
std::cout << endl << "# -- Expression(void) --" << endl;
#endif
OPREL oprel;
firstPart = SimpleExpression();
#ifdef DEBUG
std::cout << "\t\t# First part ==>" << firstPart << endl;
#endif
if(current == RELOP){
oprel=RelationalOperator();
#ifdef DEBUG
std::cout << "\t\t# OP ==>" << oprel << endl;
#endif
secondPart = SimpleExpression();
#ifdef DEBUG
std::cout << "\t\t# Second part ==>" << firstPart << endl;
#endif
if(firstPart != secondPart){ // If not same type
Error("Type non compatible !");
}
if( firstPart != DOUBLE){
if(isFunc){
OutFunctionPart +="\tpop %rax\n\
\tpop %rbx\n\
\tcmpq %rax, %rbx\n";
} else {
OutStatementPart += "\tpop %rax\n\
\tpop %rbx\n\
\tcmpq %rax, %rbx\n";
}
} else {
if(isFunc){
OutFunctionPart +="\tfldl (%rsp)\n\
\tfldl 8(%rsp)\t# operand 1 in %st(0) && operand2 in %st(1)\n\
\t addq $16, %rsp\n\
\tfcomip %st(1)\n\
\tfaddp %st(1)\n";
} else {
OutStatementPart +="\tfldl (%rsp)\n\
\tfldl 8(%rsp)\t# operand 1 in %st(0) && operand2 in %st(1)\n\
\t addq $16, %rsp\n\
\tfcomip %st(1)\n\
\tfaddp %st(1)\n";
}
}
switch(oprel){
case EQU:
#ifdef DEBUG
cout << "\t\t# EQU expression" << endl;
#endif
if(isFunc){
OutFunctionPart += "\tje Vrai" + to_string(TagNumber) + "\t# If equal\n";;
} else {
OutStatementPart += "\tje Vrai" + to_string(TagNumber) + "\t# If equal\n";
}
break;
case DIFF:
#ifdef DEBUG
cout << "\t\t# DIFF expression" << endl;
#endif
if(isFunc){
OutFunctionPart += "\tjne Vrai" + to_string(TagNumber) + "\t# If different\n";
} else {
OutStatementPart += "\tjne Vrai" + to_string(TagNumber) + "\t# If different\n";
}
break;
case SUPE:
#ifdef DEBUG
cout << "\t\t# SUPE expression" << endl;
#endif
if(isFunc){
OutFunctionPart += "\tjae Vrai" + to_string(TagNumber) + "\t# If above or equal\n";
} else {
OutStatementPart += "\tjae Vrai" + to_string(TagNumber) + "\t# If above or equal\n";
}
break;
case INFE:
#ifdef DEBUG
cout << "\t\t# INFE expression" << endl;
#endif
if(isFunc){
OutFunctionPart += "\tjbe Vrai" + to_string(TagNumber) + "\t# If below or equal\n";
} else {
OutStatementPart += "\tjbe Vrai" + to_string(TagNumber) + "\t# If below or equal\n";
}
break;
case INF:
#ifdef DEBUG
cout << "\t\t# INF expression" << endl;
#endif
if(isFunc){
OutFunctionPart += "\tjb Vrai" + to_string(TagNumber) + "\t# If below\n";
} else {
OutStatementPart += "\tjb Vrai" + to_string(TagNumber) + "\t# If below\n";
}
break;
case SUP:
#ifdef DEBUG
cout << "\t\t# SUP expression" << endl;
#endif
if(isFunc){
OutFunctionPart += "\tja Vrai" + to_string(TagNumber) + "\t# If above\n";
} else {
OutStatementPart += "\tja Vrai" + to_string(TagNumber) + "\t# If above\n";
}
break;
default:
Error("Opérateur de comparaison inconnu");
}
if(isFunc){
tempPosition = OutFunctionPart.length();
} else {
tempPosition = OutStatementPart.length();
}
#ifdef DEBUG
cout << "# End of Expression()" << endl;
#endif
return BOOL;
}
return firstPart;
}
// AssignementStatement := Identifier ":=" Expression
// Non type variable
void AssignementStatement(void){
#ifdef DEBUG
std::cout << "# ----------- In AssignementStatement(void) ----------- " << endl;
#endif
string variable;
if(current != ID)
Error("Identificateur attendu");
if(!IsDeclared(lexer->YYText()) && !IsFunc(lexer->YYText())){
cerr << "Erreur : Variable ou procedure'" << lexer->YYText() << "' non déclarée" << endl;
exit(-1);
}
variable=lexer->YYText();
if(IsDeclared(lexer->YYText())){
#ifdef DEBUG
std::cout << "# C'est une variable !! " << endl;
#endif
current=(TOKEN) lexer->yylex();
if(current != ASSIGN)
Error("caractères ':=' attendus");
current=(TOKEN) lexer->yylex();
enum TYPE VarType = DeclaredVariables[variable];
#ifdef DEBUG
cout << "# AVANT IF " << lexer->YYText() << endl;
cout << "# TYPE " << VarType << endl;
cout << "# SIZE " << getLength(lexer->YYText()) << endl;
cout << "# current " << current << endl;
#endif
if(current == STRINGCONST && getLength(lexer->YYText()) == 3) {
string chartemp = lexer->YYText();
#ifdef DEBUG
cout << "# in if" << endl << "\t# pop '" << chartemp[1] <<"'\n";
#endif
if(isFunc){
OutFunctionPart += "\tpop '";
OutFunctionPart += chartemp[1];
OutFunctionPart += "'\n";
} else {
OutStatementPart += "\tpop '";
OutStatementPart += chartemp[1];
OutStatementPart += "'\n";
}
current=(TOKEN) lexer->yylex();
current=(TOKEN) lexer->yylex();
return;
}
enum TYPE ExpType = DOUBLE;
if(VarType != DOUBLE){
ExpType = Expression();
}
if(VarType != ExpType){
Error("Can't different type");
}
switch(VarType){
case DOUBLE:
cout << "# IN DOUBLE" << endl;
if(isFunc){
OutFunctionPart += "\tpush ";
OutFunctionPart += lexer->YYText();
OutFunctionPart += "pop %rax\n\
\tmovb %al, " + variable +"\n";
} else {
OutStatementPart += "\tpop %rax\n\
\tmovb %al, " + variable +"\n";
}
current=(TOKEN) lexer->yylex();
break;
default:
cout << "# IN DEFAULT" << endl;
if(isFunc){
OutFunctionPart += "\tpop " + variable +"\n";
} else {
OutStatementPart += "\tpop " + variable +"\n";
}
break;
}
}
if(IsFunc(lexer->YYText())){
#ifdef DEBUG
std::cout << "# C'est une fonction !! " << endl;
#endif
if(isFunc){
OutFunctionPart += "\tcall " + variable +"\n";
} else {
OutStatementPart += "\tcall " + variable +"\n";
}
current=(TOKEN) lexer->yylex();
}
}
// Statement := AssignementStatement
void Statement(void){
if(strcmp(lexer->YYText(),"" ) != 0){
#ifdef DEBUG
std::cout << "# ----------- In Statement(void) ----------- " << endl;
#endif
if((TOKEN) current == KEYWORD){
#ifdef DEBUG
std::cout << "# TOKEN == KEYWORD"<< endl;
#endif
if( strcmp(lexer->YYText(),"IF" ) == 0){
#ifdef DEBUG
std::cout << "# IF STATEMENT" << endl ;
#endif
IfStatement();
return;
}
if( strcmp(lexer->YYText(),"THEN") == 0 || strcmp(lexer->YYText(),"ELSE") == 0){ // If we have then or else outside of an if do ..
#ifdef DEBUG
std::cout << "# THEN or ELSE outside of IF" << endl ;
#endif
Error("You need to be in a IF");
return;
}
if( strcmp(lexer->YYText(),"WHILE" ) == 0){
#ifdef DEBUG
std::cout << "# WHILE STATEMENT" << endl ;
#endif
WhileStatement();
return;
}
if( strcmp(lexer->YYText(),"FOR" ) == 0){
#ifdef DEBUG
std::cout << "# FOR STATEMENT" << endl ;
#endif
ForStatement();
return;
}
if( strcmp(lexer->YYText(),"BEGIN" ) == 0){
#ifdef DEBUG
std::cout << "# BLOCK STATEMENT" << endl ;
#endif
BlockStatement();
return;
}
if( strcmp(lexer->YYText(),"DO" ) == 0){
#ifdef DEBUG
std::cout << "# BLOCK STATEMENT" << endl ;
#endif
BlockStatement();
return;
}
if( strcmp(lexer->YYText(),"END" ) == 0){
#ifdef DEBUG
std::cout << "# END STATEMENT" << endl ;
#endif
Statement();
return;
}
if( strcmp(lexer->YYText(),"DISPLAY" ) == 0){
#ifdef DEBUG
std::cout << "# DISPLAY STATEMENT" << endl ;
#endif
DisplayStatement();
return;
}
if( strcmp(lexer->YYText(),"PROCEDURE" ) == 0){
#ifdef DEBUG
std::cout << "# PROCEDURE STATEMENT" << endl ;
#endif
ProcedureStatement();
return;
}
if( strcmp(lexer->YYText(),"EXIT" ) == 0){
#ifdef DEBUG
std::cout << "# EXIT STATEMENT" << endl ;
#endif
if(isFunc){
OutFunctionPart +="\tmovl $1, %eax # System call number 1: exit()\n\tmovl $0, %ebx # Exits with exit status 0\n\tint $0x80\t# Interupte prog\n";
} else {
OutStatementPart += "\tmovl $1, %eax # System call number 1: exit()\n\tmovl $0, %ebx # Exits with exit status 0\n\tint $0x80\t# Interupte prog\n";
}
Statement(); // But continue to compile
return;
}
if( strcmp(lexer->YYText(),"VAR" ) == 0) {
VarStatement();
return;
}
Error("Unkwon keyword :");
}
if( current == ID ){
#ifdef DEBUG
std::cout << "# # TOKEN == ID" << endl;
#endif
AssignementStatement();
return;
}
if( strcmp(lexer->YYText(), ".") == 0){
return;
}
Error("Instruction unreachable !");
}
}
int getLength(string input) {
int length = 0;
#ifdef DEBUGDISP
std::cout << "# getLength(" << input << ")" << endl;
#endif
for(int i = 0; i < input.length(); i++){
#ifdef DEBUGDISP
std::cout << "# Testing ==> " << input[i] << ")" << endl;
#endif
if( input[i] == '\\'){
#ifdef DEBUGDISP
std::cout << "# In \\ if" << input << ")" << endl;
#endif
i++;
if(input[i] == '0' || input[i] == 'e' || input[i] == 'x'){ // if something like \033[0;31m (RED COLOR)
#ifdef DEBUGDISP
std::cout << "# In 2nd if" << input << ")" << endl;
#endif
while(input[i] != 'm'){
if(input[i] == 'm'){
break;
}
i++;
if(i > input.length()){
Error("OULALA");
}
}
length +=4;
} else {
#ifdef DEBUGDISP
std::cout << "\t# COUNT ==>\"" << input[i] << "\"" <<endl;
#endif
length +=1;
}
} else {
#ifdef DEBUGDISP
std::cout << "\t# COUNT ==>\"" << input[i] << "\"" <<endl;
#endif
length +=1;
}
}
#ifdef DEBUGDISP
std::cout << "# Length of \"" << input << "\" ==> " << length <<endl;
#endif
return length;
}
enum TYPE Type(void){
if(current!=KEYWORD)
Error("Type needed !");
if( current == STRINGCONST){
current=(TOKEN) lexer->yylex();
return STR;
}
if( strcmp(lexer->YYText(),"BOOL") == 0 ){
current=(TOKEN) lexer->yylex();
return BOOL;
}
if( strcmp(lexer->YYText(),"INT") == 0 ){
current=(TOKEN) lexer->yylex();
return INT;
}
if( strcmp(lexer->YYText(),"DOUBLE") == 0 ){
current=(TOKEN) lexer->yylex();
return DOUBLE;
}
if( strcmp(lexer->YYText(),"CHAR") == 0 ){
current=(TOKEN) lexer->yylex();
return CHAR;
}
if( strcmp(lexer->YYText(), "ARRAY") == 0 ) {
current = (TOKEN) lexer->yylex();
return ARRAY;
}
Error("Unrecognized type, plz read the doc !");
}
void ProcedureStatement(void) {
isFunc = true;
#ifdef DEBUG
std::cout << "# ----------- WhileStatement(void) -----------" << endl;
#endif
unsigned long long tag=++TagNumber;
current = (TOKEN) lexer->yylex();
#ifdef DEBUG
std::cout << "# NAME OF PROC ==>" << lexer->YYText() << endl;
#endif
DeclaredFunc.insert(lexer->YYText());
OutFunctionPart += lexer->YYText();
OutFunctionPart += " :\n";
current = (TOKEN) lexer->yylex();
#ifdef DEBUG
std::cout << "# In Bracket " << lexer->YYText() << endl;
#endif
current = (TOKEN) lexer->yylex();
current = (TOKEN) lexer->yylex();
#ifdef DEBUG
std::cout << "# : " << lexer->YYText() << endl;
#endif
current = (TOKEN) lexer->yylex();
current = (TOKEN) lexer->yylex();
BlockStatement();
#ifdef DEBUG
std::cout << "# END OF PROC " << lexer->YYText() << endl;
#endif
OutFunctionPart += "ret\n";
isFunc = false;
}
// DISPLAY <Expression>
void DisplayStatement(void){
unsigned long long tag=++TagNumber;
#ifdef DEBUGDISP
std::cout << "# ----------- In DisplayStatement(void) -----------" << endl;
#endif
if(isFunc){
OutFunctionPart +=" \n# DISPLAY ";
} else {
OutStatementPart += "\n# DISPLAY ";
}
current = (TOKEN) lexer->yylex();
if(current == STRINGCONST){
string currentWord = lexer->YYText();
if(isFunc){
OutFunctionPart += currentWord + "\n";
} else {
OutStatementPart += currentWord + "\n";
}
currentWord.erase(0, 1); // erase the first "
currentWord.erase(currentWord.size() - 1 ); // erase the " of the end
int len = getLength(currentWord); // Not good, because of \n \t ect..
OutDeclarationPart += "STR" + to_string(TagNumber) + ":";
OutDeclarationPart += "\t.string \"" + currentWord + "\"\n";
if(isFunc){
OutFunctionPart += "\tmovl $4, %eax # sys_write\n\
\tmovl $1, %ebx # write to file descriptor 1 (stdout)\n\
\tmovl $STR" + to_string(TagNumber) + ", %ecx # pointer to the string to print\n\
\tmovl $" + to_string(len) + ", %edx # asks to print " + to_string(len) + " characters our of the string passed in %ecx\n\
\tint $0x80 # call the system call\n";
} else {
OutStatementPart += "\tmovl $4, %eax # sys_write\n\
\tmovl $1, %ebx # write to file descriptor 1 (stdout)\n\
\tmovl $STR" + to_string(TagNumber) + ", %ecx # pointer to the string to print\n\
\tmovl $" + to_string(len) + ", %edx # asks to print " + to_string(len) + " characters our of the string passed in %ecx\n\
\tint $0x80 # call the system call\n";
}
current = (TOKEN) lexer->yylex();
} else { // can be only a int for nowS
#ifdef DEBUGDISP
std::cout << "# OTHER" << endl;
#endif
if(isFunc){
OutFunctionPart += lexer->YYText();
OutFunctionPart += "\n";
} else {
OutStatementPart += lexer->YYText();
OutStatementPart += "\n";
}
enum TYPE TypeExp = Expression();
cout << "TYPE = " << TypeExp << endl;
switch(TypeExp){
case CHAR:
if(isFunc){
OutFunctionPart += "\tpop %rdx # TYPE CHAR\n\
\tmovq $FormatString, %rsi \n\
\tmovl $1, %edi \n\
\tmovl $0, %eax \n\
\tcall __printf_chk@PLT\n";
} else {
OutStatementPart += "\tpop %rdx # TYPE CHAR\n\
\tmovq $FormatString, %rsi \n\
\tmovl $1, %edi \n\
\tmovl $0, %eax \n\
\tcall __printf_chk@PLT\n";
}
break;
case INT:
if(isFunc){
OutFunctionPart += "\tpop %rdx # TYPE INT\n\
\tmovq $FormatString1, %rsi # \"%llu\\n\" \n\
\tmovl $1, %edi \n\
\tmovl $0, %eax \n\
\tcall __printf_chk@PLT\n";
} else {
OutStatementPart += "\tpop %rdx # TYPE INT\n\
\tmovq $FormatString1, %rsi # \"%llu\\n\" \n\
\tmovl $1, %edi \n\
\tmovl $0, %eax \n\
\tcall __printf_chk@PLT\n";
}
break;
case DOUBLE:
if(isFunc){
OutFunctionPart += "\tmovsd (%rsp), %xmm0\t# put stack on top of %xmm0\n\
\tsubq $16, %rsp\t\t# allocation for 3 additional doubles\n\
\tmovsd %xmm0, 8(%rsp)\n\
\tmovq $FormatString2, %rdi\t# \"%lf\\n\"\n\
\tmovq $1, %rax\n\
\tcall printf\n\
nop\n\
\taddq $24, %rsp\n";
} else {
OutStatementPart += "\tmovsd (%rsp), %xmm0\t# put stack on top of %xmm0\n\
\tsubq $16, %rsp\t\t# add allocation for more doubles\n\
\tmovsd %xmm0, 8(%rsp)\n\
\tmovq $FormatString2, %rdi\n\
\tmovq $1, %rax\n\
\tcall printf\n\
nop\n\
\taddq $24, %rsp\n";
}
break;
case BOOL:
if(isFunc){
OutFunctionPart += "\tpop %rdx\t# Print True if 1 and False if 0\n\
\tcmpq $0, %rdx\n\
\tje False" + std::to_string(tag) + "\n\
\tmovq $TrueSTR, %rdi\t# put true in rdi\n\
\tjmp Next" + std::to_string(tag) + "\n\
False" + std::to_string(tag) + ":\n\
\tmovq $FalseSTR, %rdi\t# put false in rdi \n\
Next" + std::to_string(tag) + ":\n\
\tcall puts@PLT\t# print rdi\n";
} else {
OutStatementPart += "\tpop %rdx\t# Print True if 1 and False if 0\n\
\tcmpq $0, %rdx\n\
\tje False" + std::to_string(tag) + "\n\
\tmovq $TrueSTR, %rdi\t# put true in rdi\n\
\tjmp Next" + std::to_string(tag) + "\n\