diff --git a/src/Expression.cpp b/src/Expression.cpp
index f9f942a..cfc8886 100644
--- a/src/Expression.cpp
+++ b/src/Expression.cpp
@@ -1,13 +1,17 @@
 #include "Expression.h"
 
-Expression::Expression(Kind kind):
-    kind(kind) {
+Expression::Expression(Kind kind, ValueType valueType):
+    kind(kind), valueType(valueType) {
 }
 
 Expression::Kind Expression::getKind() {
     return kind;
 }
 
+Expression::ValueType Expression::getValueType() {
+    return valueType;
+}
+
 bool Expression::isValid() {
     return kind != Expression::Kind::INVALID;
 }
@@ -19,7 +23,7 @@ string Expression::toString() {
 //
 // ExpressionBinary
 ExpressionBinary::ExpressionBinary(shared_ptr<Token> token, shared_ptr<Expression> left, shared_ptr<Expression> right):
-    Expression(Expression::Kind::BINARY), left(left), right(right) {
+    Expression(Expression::Kind::BINARY, Expression::ValueType::VOID), left(left), right(right) {
     switch (token->getKind()) {
         case Token::Kind::EQUAL:
             operation = EQUAL;
@@ -101,22 +105,41 @@ string ExpressionBinary::toString() {
 //
 // ExpressionLiteral
 ExpressionLiteral::ExpressionLiteral(shared_ptr<Token> token):
-    Expression(Expression::Kind::LITERAL) {
-    integer = stoi(token->getLexme());
+    Expression(Expression::Kind::LITERAL, Expression::ValueType::VOID) {
+    valueType = Expression::ValueType::SINT32;
+    sint32Value = stoi(token->getLexme());
 }
 
-int64_t ExpressionLiteral::getInteger() {
-    return integer;
+bool ExpressionLiteral::getBoolValue() {
+    return boolValue;
+}
+
+int32_t ExpressionLiteral::getSint32Value() {
+    return sint32Value;
+}
+
+float ExpressionLiteral::getReal32Value() {
+    return real32Value;
 }
 
 string ExpressionLiteral::toString() {
-    return to_string(integer);
+    //return to_string(integer);
+    switch (valueType) {
+        case Expression::ValueType::VOID:
+            return "VOID";
+        case Expression::ValueType::BOOL:
+            return to_string(boolValue);
+        case Expression::ValueType::SINT32:
+            return to_string(sint32Value);
+        case Expression::ValueType::REAL32:
+            return to_string(real32Value);
+    }
 }
 
 //
 // ExpressionGrouping
 ExpressionGrouping::ExpressionGrouping(shared_ptr<Expression> expression):
-    Expression(Expression::Kind::GROUPING), expression(expression) {
+    Expression(Expression::Kind::GROUPING, Expression::ValueType::VOID), expression(expression) {
 }
 
 shared_ptr<Expression> ExpressionGrouping::getExpression() {
@@ -130,7 +153,7 @@ string ExpressionGrouping::toString() {
 //
 // ExpressionIfElse
 ExpressionIfElse::ExpressionIfElse(shared_ptr<Expression> condition, shared_ptr<StatementBlock> thenBlock, shared_ptr<StatementBlock> elseBlock):
-    Expression(Expression::Kind::IF_ELSE), condition(condition), thenBlock(thenBlock), elseBlock(elseBlock) {
+    Expression(Expression::Kind::IF_ELSE, Expression::ValueType::VOID), condition(condition), thenBlock(thenBlock), elseBlock(elseBlock) {
 }
 
 shared_ptr<Expression> ExpressionIfElse::getCondition() {
@@ -162,7 +185,7 @@ string ExpressionIfElse::toString() {
 //
 // ExpressionInvalid
 ExpressionInvalid::ExpressionInvalid(shared_ptr<Token> token):
-    Expression(Expression::Kind::INVALID), token(token) {
+    Expression(Expression::Kind::INVALID, Expression::ValueType::VOID), token(token) {
 }
 
 shared_ptr<Token> ExpressionInvalid::getToken() {
diff --git a/src/Expression.h b/src/Expression.h
index a425bcd..2ebf8b2 100644
--- a/src/Expression.h
+++ b/src/Expression.h
@@ -18,23 +18,39 @@ public:
         INVALID
     };
 
+    enum ValueType {
+        VOID,
+        BOOL,
+        SINT32,
+        REAL32
+    };
+
 private:
     Kind kind;
 
+protected:
+    ValueType valueType;
+
 public:
-    Expression(Kind kind);
+    Expression(Kind kind, ValueType valueType);
     Kind getKind();
+    ValueType getValueType();
     bool isValid();
     virtual string toString();
 };
 
 class ExpressionLiteral: public Expression {
 private:
-    int64_t integer = 0;
+    bool boolValue;
+    int32_t sint32Value;
+    float real32Value;
 
 public:
     ExpressionLiteral(shared_ptr<Token> token);
-    int64_t getInteger();
+    //int64_t getInteger();
+    bool getBoolValue();
+    int32_t getSint32Value();
+    float getReal32Value();
     string toString() override;
 };
 
diff --git a/src/Lexer.cpp b/src/Lexer.cpp
index e257b42..cbf39f3 100644
--- a/src/Lexer.cpp
+++ b/src/Lexer.cpp
@@ -179,7 +179,19 @@ shared_ptr<Token> Lexer::nextToken() {
     if (token != nullptr)
         return token;
     
+    token = match(Token::Kind::BOOL, "true", true);
+    if (token != nullptr)
+        return token;
+
+    token = match(Token::Kind::BOOL, "false", true);
+    if (token != nullptr)
+        return token;
+    
     // literal
+    token = matchReal();
+    if (token != nullptr)
+        return token;
+
     token = matchInteger();
     if (token != nullptr)
         return token;
@@ -229,6 +241,29 @@ shared_ptr<Token> Lexer::matchInteger() {
     return token;
 }
 
+shared_ptr<Token> Lexer::matchReal() {
+    int nextIndex = currentIndex;
+
+    while (nextIndex < source.length() && isDigit(nextIndex))
+        nextIndex++;
+    
+    if (nextIndex >= source.length() || source.at(nextIndex) != '.')
+        return nullptr;
+    else
+        nextIndex++;
+    
+    while (nextIndex < source.length() && isDigit(nextIndex))
+        nextIndex++;
+
+    if (!isSeparator(nextIndex))
+        return matchInvalid();
+
+    string lexme = source.substr(currentIndex, nextIndex - currentIndex);
+    shared_ptr<Token> token = make_shared<Token>(Token::Kind::REAL, lexme, currentLine, currentColumn);
+    advanceWithToken(token);
+    return token;
+}
+
 shared_ptr<Token> Lexer::matchIdentifier() {
     int nextIndex = currentIndex;
 
diff --git a/src/Lexer.h b/src/Lexer.h
index 3785ada..f798510 100644
--- a/src/Lexer.h
+++ b/src/Lexer.h
@@ -17,6 +17,7 @@ private:
     shared_ptr<Token> nextToken();
     shared_ptr<Token> match(Token::Kind kind, string lexme, bool needsSeparator);
     shared_ptr<Token> matchInteger();
+    shared_ptr<Token> matchReal();
     shared_ptr<Token> matchIdentifier();
     shared_ptr<Token> matchEnd();
     shared_ptr<Token> matchInvalid();
diff --git a/src/ModuleBuilder.cpp b/src/ModuleBuilder.cpp
index 3a4f710..aaebecc 100644
--- a/src/ModuleBuilder.cpp
+++ b/src/ModuleBuilder.cpp
@@ -78,7 +78,8 @@ llvm::Value *ModuleBuilder::valueForExpression(shared_ptr<Expression> expression
 }
 
 llvm::Value *ModuleBuilder::valueForLiteral(shared_ptr<ExpressionLiteral> expression) {
-    return llvm::ConstantInt::get(int32Type, expression->getInteger(), true);
+    //return llvm::ConstantInt::get(int32Type, expression->getInteger(), true);
+    return llvm::ConstantInt::get(int32Type, expression->getSint32Value(), true);
 }
 
 llvm::Value *ModuleBuilder::valueForGrouping(shared_ptr<ExpressionGrouping> expression) {
diff --git a/src/Token.cpp b/src/Token.cpp
index 10f45bd..5a7ae0e 100644
--- a/src/Token.cpp
+++ b/src/Token.cpp
@@ -108,8 +108,12 @@ string Token::toString() {
         case QUESTION:
             return "QUESTION";
 
+        case BOOL:
+            return "BOOL(" + lexme + ")";
         case INTEGER:
             return "INTEGER(" + lexme + ")";
+        case REAL:
+            return "REAL(" + lexme + ")";
         case IDENTIFIER:
             return "IDENTIFIER(" + lexme + ")";
 
diff --git a/src/Token.h b/src/Token.h
index 4947759..01d9398 100644
--- a/src/Token.h
+++ b/src/Token.h
@@ -31,7 +31,9 @@ public:
         FUNCTION,
         RETURN,
 
+        BOOL,
         INTEGER,
+        REAL,
         IDENTIFIER,
 
         NEW_LINE,