Added logical operators

3 files changed, 15 insertions, 0 deletions

diff --git a/include/cps/AST.h b/include/cps/AST.h
index 588f5eb..de57024 100644
--- a/include/cps/AST.h
+++ b/include/cps/AST.h
@@ -51,6 +51,16 @@ public:
     int getLine() const { return Line; }
 };
 
+class UnaryExprAST : public ExprAST {
+    int Op;
+    std::unique_ptr<ExprAST> Operand;
+public:
+    UnaryExprAST(int Op, std::unique_ptr<ExprAST> Operand)
+        : Op(Op), Operand(std::move(Operand)) {}
+    int getOp() const { return Op; }
+    ExprAST *getOperand() const { return Operand.get(); }
+};
+
 class BinaryExprAST : public ExprAST {
     int Op;
     std::unique_ptr<ExprAST> LHS, RHS;
diff --git a/include/cps/Lexer.h b/include/cps/Lexer.h
index 15f56c4..97ccd83 100644
--- a/include/cps/Lexer.h
+++ b/include/cps/Lexer.h
@@ -36,6 +36,10 @@ enum Token {
     tok_boolean_kw = -22,
     tok_true = -23,
     tok_false = -24,
+    
+    tok_and = -25,
+    tok_or = -26,
+    tok_not = -27,
 
     tok_identifier = -100,
     tok_number_int = -101,
diff --git a/include/cps/Parser.h b/include/cps/Parser.h
index 2a9c98a..db1f243 100644
--- a/include/cps/Parser.h
+++ b/include/cps/Parser.h
@@ -17,6 +17,7 @@ class Parser {
     int GetTokPrecedence();
 
     std::unique_ptr<ExprAST> ParseExpression();
+    std::unique_ptr<ExprAST> ParseUnary(); 
     std::unique_ptr<ExprAST> ParsePrimary();
     std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec, std::unique_ptr<ExprAST> LHS);