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ast.cpp
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ast.cpp
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#include "ast.h"
#include <iostream>
#include <sstream>
#include <set>
#include "asm.h"
int globalStackPointer = 0;
int arraySize = 0;
extern Asm assemblyFile;
class VariableInfo{
public:
VariableInfo(int offset, bool isArray, bool isParameter, Type type){
this->offset = offset;
this->isArray = isArray;
this->isParameter = isParameter;
this->type = type;
}
int offset;
bool isArray;
bool isParameter;
Type type;
};
map<string, VariableInfo *> codeGenerationVars;
const char * intTemps[] = {"$t0","$t1", "$t2","$t3","$t4","$t5","$t6","$t7","$t8","$t9" };
const char * floatTemps[] = {"$f0",
"$f1",
"$f2",
"$f3",
"$f4",
"$f5",
"$f6",
"$f7",
"$f8",
"$f9",
"$f10",
"$f11",
"$f12",
"$f13",
"$f14",
"$f15",
"$f16",
"$f17",
"$f18",
"$f19",
"$f20",
"$f21",
"$f22",
"$f23",
"$f24",
"$f25",
"$f26",
"$f27",
"$f28",
"$f29",
"$f30",
"$f31"
};
#define INT_TEMP_COUNT 10
#define FLOAT_TEMP_COUNT 32
set<string> intTempMap;
set<string> floatTempMap;
string getIntTemp(){
for (int i = 0; i < INT_TEMP_COUNT; i++)
{
if(intTempMap.find(intTemps[i]) == intTempMap.end()){
intTempMap.insert(intTemps[i]);
return string(intTemps[i]);
}
}
cout<<"No more int registers!"<<endl;
//exit(1);
return "";
}
string getFloatTemp(){
for (int i = 0; i < FLOAT_TEMP_COUNT; i++)
{
if(floatTempMap.find(floatTemps[i]) == floatTempMap.end()){
floatTempMap.insert(floatTemps[i]);
return string(floatTemps[i]);
}
}
cout<<"No more float registers!"<<endl;
//exit(1);
return "";
}
void releaseIntTemp(string temp){
intTempMap.erase(temp);
}
void releaseFloatTemp(string temp){
floatTempMap.erase(temp);
}
void releaseRegister(string temp){
releaseIntTemp(temp);
releaseFloatTemp(temp);
}
int labelCounter = 0;
string getNewLabel(string prefix){
stringstream ss;
ss<<prefix << labelCounter;
labelCounter++;
return ss.str();
}
string saveState(){
set<string>::iterator it = floatTempMap.begin();
stringstream ss;
ss<<"sw $ra, " <<globalStackPointer<< "($sp)\n";
globalStackPointer+=4;
return ss.str();
}
string retrieveState(string state){
std::string::size_type n = 0;
string s = "sw";
while ( ( n = state.find( s, n ) ) != std::string::npos )
{
state.replace( n, s.size(), "lw" );
n += 2;
globalStackPointer-=4;
}
return state;
}
class ContextStack{
public:
struct ContextStack* prev;
map<string, Type> variables;
};
class FunctionInfo{
public:
Type returnType;
bool hasMultipleReturnTypes;
list<Type> returnTypeList;
list<Parameter *> parameters;
};
map<string, Type> globalVariables = {};
map<string, Type> variables;
map<string, FunctionInfo*> methods;
map<string, Type> resultTypes ={
{"INT,INT", INT},
{"FLOAT32,FLOAT32", FLOAT32},
{"INT,FLOAT32", FLOAT32},
{"FLOAT32,INT", FLOAT32},
{"INT_ARRAY,INT_ARRAY", INT},
{"FLOAT_ARRAY,FLOAT_ARRAY", FLOAT32},
{"FLOAT_ARRAY,INT_ARRAY", FLOAT32},
{"INT_ARRAY,FLOAT_ARRAY", FLOAT32},
{"INT_ARRAY,INT", INT},
{"INT_ARRAY,FLOAT32", FLOAT32},
{"INT,FLOAT_ARRAY", FLOAT32},
{"INT,INT_ARRAY", INT},
{"FLOAT_ARRAY,FLOAT32", FLOAT32},
{"FLOAT32,FLOAT_ARRAY",FLOAT32},
{"FLOAT32,INT_ARRAY", FLOAT32}
};
map<string, Type> booleanResultTypes ={
{"INT,INT", BOOL},
{"FLOAT32,FLOAT32", BOOL},
{"INT,FLOAT32", BOOL},
{"FLOAT32,INT", BOOL},
{"INT_ARRAY,INT_ARRAY", BOOL},
{"FLOAT_ARRAY,FLOAT_ARRAY", BOOL},
{"FLOAT_ARRAY,INT_ARRAY", BOOL},
{"INT_ARRAY,FLOAT_ARRAY", BOOL},
{"INT_ARRAY,INT", BOOL},
{"INT_ARRAY,FLOAT32", BOOL},
{"INT,FLOAT_ARRAY", BOOL},
{"INT,INT_ARRAY", BOOL},
{"FLOAT_ARRAY,FLOAT32", BOOL},
{"FLOAT32,FLOAT_ARRAY",BOOL},
{"FLOAT32,INT_ARRAY", BOOL},
{"BOOL,BOOL", BOOL},
};
string getTypeName(Type type){
switch(type){
case INT:
return "INT";
case FLOAT32:
return "FLOAT32";
case VOID:
return "VOID";
case INT_ARRAY:
return "INT";
case FLOAT_ARRAY:
return "FLOAT32";
case BOOL:
return "BOOL";
}
cout<<"Unknown type"<<endl;
exit(0);
}
ContextStack * context = NULL;
void pushContext(){
variables.clear();
ContextStack * c = new ContextStack();
c->variables = variables;
c->prev = context;
context = c;
}
void popContext(){
if(context != NULL){
ContextStack * previous = context->prev;
free(context);
context = previous;
}
}
Type getLocalVariableType(string id){
ContextStack * currContext = context;
while(currContext != NULL){
if(currContext->variables[id] != 0){
return currContext->variables[id];
}
currContext = currContext->prev;
}
if(!context->variables.empty())
return context->variables[id];
return INVALID;
}
Type getVariableType(string id){
if(!globalVariables.empty())
return globalVariables[id];
return INVALID;
}
Type variableExists(string id){
Type value;
if(context != NULL){
value = getLocalVariableType(id);
//context->variables[id] != 0
if(value != 0)
return value;
}
if( globalVariables[id] != 0 ){
return globalVariables[id];
}
return INVALID;
}
void AuxVarDeclaration(DeclaratorList declaratorsList, InitializerList initializerList, Type type, int line, bool isGlobalDeclaration){
list<Declarator *>::iterator declaratorIt = declaratorsList.begin();
list<Initializer *>::iterator initializerIt = initializerList.begin();
if( !initializerList.empty()){
if( declaratorsList.size() != initializerList.size()){
cout<<"Error: Initializers list must match declarators list. Line "<<line<<endl;
exit(0);
}
if(type != NULLTYPE){
while(initializerIt != initializerList.end() ){
Initializer * init = (*initializerIt);
if(init->initializer->getType() != type){
cout<<"Error in line "<<line<<". Value of type "<<getTypeName(init->initializer->getType())<<" cannot be assigned to "<<getTypeName(type)<<" type."<<endl;
exit(0);
}
initializerIt++;
}
}
}
int declaratorItIndex = 0;
while(declaratorIt != declaratorsList.end()){
Declarator * declarator = (*declaratorIt);
if(declarator->isArray){
if(declarator->arraySize == NULL ){
cout<<"Error: storage size of: "<<declarator->id<< " array is unknown. Line: "<<line<<endl;\
exit(0);
}
if(declarator->arraySize->getType() != INT){
cout<<"Error: storage size of '"<<declarator->id<<"' must be an int value"<< ". Line: "<<line<<endl;
exit(0);
}
}
if(!variableExists(declarator->id)){
if(type == NULLTYPE){
//Esto es para asignacion dinamica de tipo
list<Initializer *>::iterator initializerIt2 = initializerList.begin();
advance(initializerIt2, declaratorItIndex);
Initializer * initializer = (*initializerIt2);
if(isGlobalDeclaration){
globalVariables[declarator->id] = initializer->initializer->getType();
}else{
context->variables[declarator->id] = initializer->initializer->getType();
}
}else{
if(isGlobalDeclaration){
globalVariables[declarator->id] = type;
}else{
context->variables[declarator->id] = type;
}
}
}else{
cout<<"Error: redefinition of variable '"<< declarator->id<< "'. Line: "<<line <<endl;
exit(0);
}
declaratorIt++;
declaratorItIndex++;
}
}
int VarDeclaration::evaluateSemantic(){
AuxVarDeclaration(this->declaratorsList, this->initializerList, this->type, this->line, false);
return 1;
}
string VarDeclaration::genCode(){
stringstream code;
list<Declarator *>::iterator it = this->declaratorsList.begin();
int declaratorItIndex = 0;
while( it != this->declaratorsList.end()){
Declarator * declarator = (*it);
list<Initializer *>::iterator initializerIt = initializerList.begin();
advance(initializerIt, declaratorItIndex);
Initializer * initializer = (*initializerIt);
if(!declarator->isArray){
codeGenerationVars[declarator->id] = new VariableInfo(globalStackPointer, false, false, this->type);
globalStackPointer +=4;
}else{
codeGenerationVars[declarator->id] = new VariableInfo(globalStackPointer, true, false, this->type);
// if(initializer->initializer == NULL){
if(declarator->arraySize != NULL){
int size = ((IntExpression *)declarator->arraySize)->value;
globalStackPointer += (size * 4);
}
// }
}
if(initializer != NULL){
int offset = codeGenerationVars[declarator->id]->offset;
Code exprCode;
initializer->initializer->genCode(exprCode);
code << exprCode.code <<endl;
if(exprCode.type == INT){
code << "sw " << exprCode.place <<", "<< offset << "($sp)"<<endl;
}else if(exprCode.type == FLOAT32){
code << "s.s " << exprCode.place <<", "<< offset << "($sp)"<<endl;
}
releaseRegister(exprCode.place);
// if (declarator->isArray)
// {
// globalStackPointer+=4;
// offset += 4;
// }
}
it++;
}
return code.str();
}
int GlobalDeclaration::evaluateSemantic(){
VarDeclaration * varDeclaration = this->declarationStatement;
AuxVarDeclaration(varDeclaration->declaratorsList, varDeclaration->initializerList, varDeclaration->type, varDeclaration->line, true);
return 2;
}
string GlobalDeclaration::genCode(){
return "";
}
int BlockStatement::evaluateSemantic(){
list<Statement *>::iterator itd = this->statements.begin();
while( itd != this->statements.end()){
Statement * statement = *itd;
if( statement!= NULL){
statement->evaluateSemantic();
}
itd++;
}
return 3;
}
string BlockStatement::genCode(){
stringstream ss;
list<Statement *>::iterator its = this->statements.begin();
while (its != this->statements.end())
{
Statement * stmt = *its;
if(stmt != NULL){
ss<<stmt->genCode()<<endl;
}
its++;
}
return ss.str();
}
int PrintStatement::evaluateSemantic(){
list<Expression *>::iterator argsIt = this->args.begin();
while(argsIt != this->args.end()){
(*argsIt)->getType();
argsIt++;
}
return 0;
}
string PrintStatement::genCode(){
list<Expression *>::iterator it = this->args.begin();
list<Code> codes;
stringstream ss;
Code argCode;
while (it != this->args.end())
{
(*it)->genCode(argCode);
ss << argCode.code <<endl;
codes.push_back(argCode);
it++;
}
int codesIndex = 0;
list<Code>::iterator placesIt = codes.begin();
list<Expression *>::iterator argsIt = this->args.begin();
while (placesIt != codes.end()){
releaseRegister((*placesIt).place);
if((*placesIt).type == INT){
advance(argsIt, codesIndex);
if(codeGenerationVars.find(((IdExpression*)(*argsIt))->value) != codeGenerationVars.end()){
// string intTemp = getIntTemp();
IdExpression * id = (IdExpression*)(*argsIt);
if( codeGenerationVars[id->value]->isArray){
int c = 0;
int offset = 0;
while( c < arraySize ){
ss << "lw "<<"$t9"<<", "<<offset<<"("<<(*placesIt).place<<")"<<endl
<<"move $a0, "<< "$t9"<<endl
<< "li $v0, 1"<<endl
<< "syscall"<<endl;
c++;
offset = offset + 4;
}
}else{
ss <<"move $a0, "<< (*placesIt).place<<endl
<< "li $v0, 1"<<endl
<< "syscall"<<endl;
}
// releaseRegister(intTemp);
}else{
ss <<"move $a0, "<< (*placesIt).place<<endl
<< "li $v0, 1"<<endl
<< "syscall"<<endl;
}
}else if((*placesIt).type == FLOAT32){
ss << "mov.s $f12, "<< (*placesIt).place<<endl
<< "li $v0, 2"<<endl
<< "syscall"<<endl;
}else if((*placesIt).type == STRING){
ss << "la $a0, "<< (*placesIt).place<<endl
<< "li $v0, 4"<<endl
<< "syscall"<<endl;
}else if((*placesIt).type == BOOL){
ss << "move $a0, "<<(*placesIt).place<<endl
<< "li $v0, 1"<<endl
<< "syscall"<<endl;
}
codesIndex++;
placesIt++;
}
return ss.str();
}
int Parameter::evaluateSemantic(){
if(!variableExists(this->id)){
context->variables[this->id] = this->type;
}else{
cout<<"Error in line: Redefinition of variable '"<<this->id<<"'. Line "<<this->line<<endl;
exit(0);
}
return 0;
}
void addFunctionDeclaration(string id, ParametersList params, TypeList returnTypeList, Type returnType, bool hasMultipleReturnTypes, int line){
if(methods[id] != 0){
cout<<"Error in line "<<line<<": Redefinition of function '"<<id<<"'."<<endl;
exit(0);
}
methods[id] = new FunctionInfo();
methods[id]->returnType = returnType;
methods[id]->parameters = params;
methods[id]->returnTypeList = returnTypeList;
if( hasMultipleReturnTypes ){
methods[id]->hasMultipleReturnTypes = true;
}else{
methods[id]->hasMultipleReturnTypes = false;
}
}
int FunctionDefinition::evaluateSemantic(){
if(this->params.size() > 4){
cout<<"Error in line "<<this->line<<": Function '"<<this->id<<"' can't have more than 4 paramaters."<<endl;
exit(0);
}
if(this->typeList.empty()){
addFunctionDeclaration(this->id, this->params, this->typeList, this->type, false, this->line);
}else{
addFunctionDeclaration(this->id, this->params, this->typeList, this->type, true, this->line);
}
pushContext();
list<Parameter* >::iterator it = this->params.begin();
while(it != this->params.end()){
(*it)->evaluateSemantic();
it++;
}
if(this->statement != NULL){
this->statement->evaluateSemantic();
}
popContext();
return 4;
}
string FunctionDefinition::genCode(){
if(this->statement == NULL)
return "";
int stackPointer = 4;
globalStackPointer = 0;
stringstream code;
code << this->id<<": "<<endl;
string state = saveState();
code <<state<<endl;
if(this->params.size() > 0){
list<Parameter *>::iterator it = this->params.begin();
for(int i = 0; i< this->params.size(); i++){
code << "sw $a"<<i<<", "<< stackPointer<<"($sp)"<<endl;
codeGenerationVars[(*it)->id] = new VariableInfo(stackPointer, false, true, (*it)->type);
stackPointer +=4;
globalStackPointer +=4;
it++;
}
}
code<< this->statement->genCode()<<endl;
stringstream sp;
int currentStackPointer = globalStackPointer;
sp << endl<<"addiu $sp, $sp, -"<<currentStackPointer<<endl;
code << retrieveState(state);
code << "addiu $sp, $sp, "<<currentStackPointer<<endl;
code <<"jr $ra"<<endl;
codeGenerationVars.clear();
string result = code.str();
result.insert(id.size() + 2, sp.str());
return result;
}
int IfStatement::evaluateSemantic(){
if( this->initExpression != NULL ){
this->initExpression->getType();
}
if(this->conditionalExpression->getType() != BOOL){
cout<<"Error in line "<<this->line<<": Expression for if conditional statement must be boolean"<<endl;
}
pushContext();
this->trueStatement->evaluateSemantic();
popContext();
return 0;
}
string IfStatement::genCode(){
string endIfLabel = getNewLabel("endif");
Code exprCode;
this->conditionalExpression->genCode(exprCode);
stringstream code;
code << exprCode.code << endl;
if(exprCode.type == INT){
code<< "beqz "<< exprCode.place << ", " << endIfLabel <<endl;
}else{
code << "bc1f "<< endIfLabel <<endl;
}
code<< this->trueStatement->genCode() << endl
<< endIfLabel <<" :"<< endl;
releaseRegister(exprCode.place);
return code.str();
}
int ElseStatement::evaluateSemantic(){
if( this->initExpression != NULL ){
this->initExpression->getType();
}
if(this->conditionalExpression->getType() != BOOL){
cout<<"Error in line "<<this->line<<": Expression for if conditional statement must be boolean"<<endl;
}
pushContext();
this->trueStatement->evaluateSemantic();
popContext();
if(this->falseStatement != NULL)
this->falseStatement->evaluateSemantic();
popContext();
return 0;
}
string ElseStatement::genCode(){
string elseLabel = getNewLabel("else");
string endIfLabel = getNewLabel("endif");
Code exprCode;
this->conditionalExpression->genCode(exprCode);
stringstream code;
code << exprCode.code << endl;
if(exprCode.type == INT){
code<< "beqz "<< exprCode.place << ", " << elseLabel <<endl;
}else{
code << "bc1f "<< elseLabel <<endl;
}
code << this->trueStatement->genCode() << endl
<< "j " <<endIfLabel << endl
<< elseLabel <<": " <<endl
<< this->falseStatement->genCode() <<endl
<< endIfLabel <<" :"<< endl;
releaseRegister(exprCode.place);
return code.str();
}
int ForStatement::evaluateSemantic(){
if(this->initExpr != NULL){
this->initExpr->getType();
}
if(this->conditionalExpr != NULL){
if(this->conditionalExpr->getType() != BOOL){
cout<<"Error in line "<<this->line<<": Conditional expression in for statement must be boolean."<<endl;
}
}
if(this->postExpr != NULL){
this->postExpr->getType();
}
pushContext();
if(this->statement != NULL){
this->statement->evaluateSemantic();
}
popContext();
return 0;
}
string ForStatement::genCode(){
Code initExprCode;
Code conditionalExprCode;
Code postExprCode;
string forLabel = getNewLabel("for");
string endForLabel = getNewLabel("endFor");
stringstream ss;
if(this->initExpr != NULL){
this->initExpr->genCode(initExprCode);
ss<<initExprCode.code<<endl;
releaseRegister(initExprCode.place);
}
ss<<forLabel<<": "<<endl;
if(this->conditionalExpr != NULL){
this->conditionalExpr->genCode(conditionalExprCode);
ss<<conditionalExprCode.code<<endl;
releaseRegister(conditionalExprCode.place);
if(conditionalExprCode.type == INT){
ss<<"beqz "<<conditionalExprCode.place<<", "<<endForLabel<<endl;
}else if(conditionalExprCode.type == FLOAT32){
ss<<"bc1f "<<endForLabel<<endl;
}
}
ss<<this->statement->genCode()<<endl;
if( this->postExpr != NULL){
this->postExpr->genCode(postExprCode);
ss<<postExprCode.code<<endl;
}
ss<<"j "<< forLabel<<endl
<<endForLabel<<": "<<endl;
return ss.str();
}
int ReturnStatement::evaluateSemantic(){
list<Expression *>::iterator iterator = this->expressionList.begin();
while(iterator != this->expressionList.end()){
(*iterator)->getType();
iterator++;
}
return 0;
}
string ReturnStatement::genCode(){
list<Expression *>::iterator expressionIt = this->expressionList.begin();
Code exprCode;
stringstream ss;
list<Code> codes;
while( expressionIt != this->expressionList.end()){
(*expressionIt)->genCode(exprCode);
ss << exprCode.code <<endl;
codes.push_back(exprCode);
expressionIt++;
}
int i = 0;
list<Code>::iterator placesIt = codes.begin();
while (placesIt != codes.end())
{
releaseRegister((*placesIt).place);
if(exprCode.type == INT)
ss<< "move $v"<<i<<", " << (*placesIt).place <<endl;
else
ss<< "mfc1 $v"<<i<<", "<<(*placesIt).place<<endl;
i++;
placesIt++;
}
return ss.str();
}
int JumpStatement::evaluateSemantic(){
//nada
return 0;
}
string JumpStatement::genCode(){
stringstream ss;
ss<< "li $v0, 10"<<endl
<< "syscall"<<endl;
return ss.str();
}
int ExpressionStatement::evaluateSemantic(){
return this->expression->getType();
}
string ExpressionStatement::genCode(){
Code exprCode;
this->expression->genCode(exprCode);
releaseRegister(exprCode.place);
return exprCode.code;
}
Type IntExpression::getType(){
return INT;
}
void IntExpression::genCode(Code &code){
stringstream ss;
string intTemp = getIntTemp();
ss << "li " << intTemp << ", "<< this->value <<endl;
code.place = intTemp;
code.type = INT;
code.code = ss.str();
}
Type FloatExpression::getType(){
return FLOAT32;
}
void FloatExpression::genCode(Code &code){
stringstream ss;
string floatTemp = getFloatTemp();
ss << "li.s " << floatTemp << ", "<< this->value <<endl;
code.place = floatTemp;
code.type = FLOAT32;
code.code = ss.str();
}
Type BoolExpression::getType(){
return BOOL;
}
void BoolExpression::genCode(Code &code){
stringstream ss;
string intTemp = getIntTemp();
if(this->value){
ss<< "addi "<<intTemp<< ", $zero, 1"<<endl;
}else{
ss << "move " << intTemp << ", $zero"<<endl;
}
code.place = intTemp;
code.type = BOOL;
code.code = ss.str();
}
Type StringExpression::getType(){
return STRING;
}
void StringExpression::genCode(Code &code){
string strLabel = getNewLabel("string");
stringstream ss;
ss << strLabel <<": .asciiz" << this->value << ""<<endl;
assemblyFile.data += ss.str();
code.code = "";
code.place = strLabel;
code.type = STRING;
}
Type IdExpression::getType(){
Type value;
if(context != NULL){
value = variableExists(this->value);
if(value != INVALID)
return value;
}
value = getVariableType(this->value);
if(value == INVALID){
cout<<"Error in line "<<this->line<<": Variable '"<<this->value<<"' was not declared in this scope."<<endl;
exit(0);
}
return INVALID;
}
void IdExpression::genCode(Code &code){
code.type = globalVariables[this->value];
if(codeGenerationVars.find(this->value) == codeGenerationVars.end()){
if(globalVariables[this->value] == INT_ARRAY || globalVariables[this->value] == FLOAT_ARRAY){
string intTemp = getIntTemp();
code.code = "la " + intTemp+ ", "+ this->value + "\n";
code.place = intTemp;
}
if(globalVariables[this->value] == FLOAT32){
string floatTemp = getFloatTemp();
code.place = floatTemp;
code.code = "l.s "+ floatTemp + ", "+ this->value + "\n";
}else{
string intTemp = getIntTemp();
code.place = intTemp;
code.code = "lw "+ intTemp + ", "+ this->value + "\n";
}
}
else{
code.type = codeGenerationVars[this->value]->type;
if(codeGenerationVars[this->value]->type == FLOAT32 && !codeGenerationVars[this->value]->isArray){
string floatTemp = getFloatTemp();
code.place = floatTemp;
code.code = "l.s "+ floatTemp + ", " +to_string(codeGenerationVars[this->value]->offset) +"($sp)\n";
}else if(codeGenerationVars[this->value]->type == INT && !codeGenerationVars[this->value]->isArray){
string intTemp = getIntTemp();
code.place = intTemp;
code.code = "lw "+ intTemp + ", " + to_string(codeGenerationVars[this->value]->offset) +"($sp)\n";
}else if(codeGenerationVars[this->value]->isArray){
string intTemp = getIntTemp();
code.code = "la "+ intTemp + ", " + to_string(codeGenerationVars[this->value]->offset)+"($sp)\n";
code.place = intTemp;
}
}
}
Type getUnaryType(Type expressionType, int unaryOperation, int line){
switch(unaryOperation){
case INCREMENT:
case DECREMENT:
if(expressionType == INT || expressionType == FLOAT32)
return expressionType;
case NOT:
if(expressionType == BOOL)
return BOOL;
}
cerr<<"Error in line "<<line<<": Invalid type"<<endl;
exit(0);
}
Type UnaryExpression::getType(){
//Tambien hay error para las unary cuando hay dos unary seguido y el primero es un bool
Type expressionType = this->expression->getType();
return getUnaryType(expressionType, this->type, this->line);
}
void UnaryExpression::genCode(Code &code){
}
Type PostIncrementExpression::getType(){
if(this->expression->getType() != INT && this->expression->getType() != FLOAT32){
cerr<<"Error in line "<<this->line<<": Invalid type"<<endl;
exit(0);
}
return this->expression->getType();
}
void PostIncrementExpression::genCode(Code &code){
Code exprCode;
stringstream ss;
this->expression->genCode(exprCode);
ss<<exprCode.code<<endl;
if(exprCode.type == INT){
ss<<"addi "<<exprCode.place<<", "<<exprCode.place<<", "<<"1"<<endl
<<"sw "<<exprCode.place<<", "<<to_string(codeGenerationVars[((IdExpression*)this->expression)->value]->offset)<<"($sp)"<<endl;
code.place = exprCode.place;
code.type = INT;
}else if(exprCode.type == FLOAT32){
string floatTemp = getFloatTemp();
ss<<"li.s "<<floatTemp<<", "<<"1.0"<<endl
<<"add.s "<<exprCode.place<<", "<<exprCode.place<<", "<<floatTemp<<endl
<<"s.s "<<exprCode.place<<", "<<to_string(codeGenerationVars[((IdExpression*)this->expression)->value]->offset)<<"($sp)"<<endl;
releaseRegister(floatTemp);
code.place = exprCode.place;
code.type = FLOAT32;
}else if( exprCode.type == INT_ARRAY){
string intTemp = getIntTemp();
ss << "lw "<<intTemp<<", ("<<exprCode.place<<")"<<endl
<<"addi "<<intTemp<<", "<<intTemp<<", "<<"1"<<endl
<<"sw "<<intTemp<<", "<<to_string(codeGenerationVars[((IdExpression*)this->expression)->value]->offset)<<"($sp)"<<endl;
releaseRegister(exprCode.place);
code.place = intTemp;
code.type = INT_ARRAY;
}else if( exprCode.type == FLOAT_ARRAY ){
string floatTemp = getFloatTemp();
ss << "l.s "<<floatTemp<<", ("<<exprCode.place<<")"<<endl
<<"s.s "<<floatTemp<<", "<<to_string(codeGenerationVars[((IdExpression*)this->expression)->value]->offset)<<"($sp)"<<endl;
releaseRegister(exprCode.place);
code.place = floatTemp;
code.type = FLOAT_ARRAY;
}
code.code = ss.str();
}
Type PostDecrementExpression::getType(){
if(this->expression->getType() != INT && this->expression->getType() != FLOAT32){
cerr<<"Error in line "<<this->line<<": Invalid type"<<endl;
exit(0);
}