feat: add booleans into expressions

examples/a.whirl

@@ -3,7 +3,9 @@ import "./b.whirl";
 proc main() :: int {
 	b::hello();
 	b::sum(1, 2);
-	let a: bool = false;
-	$printf("%d", true);
+
+	let c: bool = false;
+	printf("%d", c);
+
 	escape 0;
 }

examples/b.whirl

@@ -3,7 +3,7 @@ proc hello() :: void {
 }
 
 proc sum(a: int, b: int) :: int {
-	printf("%d + %d = %d", a, b, a + b);
+	printf("%d + %d = %d\n", a, b, a + b);
 }
 
 proc s() :: string {

pkg/codegen/c.go

@@ -37,15 +37,15 @@ func (i Int) CValue(ctx Context) string {
 }
 
 func (b Bool) CType(ctx Context) string {
-	return "bool"
+	return "int"
 }
 
 func (b Bool) CValue(ctx Context) string {
 	if b.Value {
-		return "true"
+		return "1"
 	}
 
-	return "false"
+	return "0"
 }
 
 func (c Char) CType(ctx Context) string {

pkg/lexer/lexer.go

@@ -92,11 +92,11 @@ func (iter *TokenIterator) Next() (Token, error) {
 
 	//Check for booleans
 	if iter.FoundToken([]byte("false"), true) {
-		return Token{BOOLEAN_LIT, "false"}, nil
+		return Token{BOOLEAN_LIT, "0"}, nil
 	}
 
 	if iter.FoundToken([]byte("true"), true) {
-		return Token{BOOLEAN_LIT, "true"}, nil
+		return Token{BOOLEAN_LIT, "1"}, nil
 	}
 
 	//Check for strings

pkg/lexer/lexer_test.go

@@ -13,7 +13,7 @@ func TestLexerEmptyMain(t *testing.T) {
 }
 
 func TestLexerVariables(t *testing.T) {
-	err := CheckForErrorsInIterator([]byte("proc main() :: int { let a: int = 5; escape 0; }"))
+	err := CheckForErrorsInIterator([]byte("proc main() :: int { let a: int = 5; let b: bool = true; escape 0; }"))
 
 	if err != nil {
 		t.Fatalf(err.Error())