2 files changed, 12 insertions, 0 deletions
diff --git a/src/parser/ast.c b/src/parser/ast.c
index 9c78d1f..63d8a08 100644
--- a/src/parser/ast.c
+++ b/src/parser/ast.c
@@ -11,6 +11,9 @@ void free_expr(struct Expr* expr)
 	{
 		case EXPR_PRIMARY:
 			break;
+		case EXPR_UNARY:
+			free_expr(expr->unary.operand);
+			break;
 		case EXPR_BINARY:
 			free_expr(expr->binary.left);
 			free_expr(expr->binary.right);
diff --git a/src/parser/ast.h b/src/parser/ast.h
index 75d0bdd..288bddf 100644
--- a/src/parser/ast.h
+++ b/src/parser/ast.h
@@ -58,6 +58,7 @@ struct Param
 enum ExprKind
 {
 	EXPR_PRIMARY,
+	EXPR_UNARY,
 	EXPR_BINARY,
 	EXPR_MEMBER,
 	EXPR_DEREF,
@@ -68,6 +69,12 @@ struct PrimaryExpr
 	struct Token token;
 };
 
+struct UnaryExpr
+{
+	struct Token op;
+	struct Expr* operand;
+};
+
 struct BinaryExpr
 {
 	struct Expr* left;
@@ -83,6 +90,7 @@ struct MemberExpr
 
 struct DerefExpr
 {
+	bool is_signed;
 	enum StoreSize size;
 	struct Expr* address;
 };
@@ -93,6 +101,7 @@ struct Expr
 	union
 	{
 		struct PrimaryExpr primary;
+		struct UnaryExpr unary;
 		struct BinaryExpr binary;
 		struct MemberExpr member;
 		struct DerefExpr deref;