3 files changed, 8 insertions, 12 deletions
diff --git a/include/cps/AST.h b/include/cps/AST.h
index 7791580..3c58642 100644
--- a/include/cps/AST.h
+++ b/include/cps/AST.h
@@ -86,15 +86,5 @@ public:
     const std::vector<std::unique_ptr<StmtAST>> &getElseStmts() const { return ElseStmts; }
 };
 
-class BinaryExprAST : public ExprAST {
-    char Op;
-    std::unique_ptr<ExprAST> LHS, RHS;
-public:
-    BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS, std::unique_ptr<ExprAST> RHS)
-        : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
-    char getOp() const { return Op; }
-    ExprAST *getLHS() const { return LHS.get(); }
-    ExprAST *getRHS() const { return RHS.get(); }
-};
 
 } // namespace cps
diff --git a/include/cps/Parser.h b/include/cps/Parser.h
index c5d0c97..58b6366 100644
--- a/include/cps/Parser.h
+++ b/include/cps/Parser.h
@@ -11,7 +11,7 @@ class Parser {
     Lexer &Lex;
     int CurTok;
     
-    std::map<char, int> BinopPrecedence;
+    std::map<int, int> BinopPrecedence;
 
     int getNextToken();
     int GetTokPrecedence();
diff --git a/lib/Parser/Parser.cc b/lib/Parser/Parser.cc
index ee94b36..998d50b 100644
--- a/lib/Parser/Parser.cc
+++ b/lib/Parser/Parser.cc
@@ -9,12 +9,18 @@ Parser::Parser(Lexer &L) : Lex(L) {
     BinopPrecedence[tok_ne] = 10;
     BinopPrecedence[tok_le] = 10;
     BinopPrecedence[tok_ge] = 10;
+
     BinopPrecedence['<'] = 10;
     BinopPrecedence['>'] = 10;
+
+    BinopPrecedence['+'] = 20;
+    BinopPrecedence['-'] = 20;
+    BinopPrecedence['*'] = 40;
+    BinopPrecedence['/'] = 40;
 }
 
 int Parser::GetTokPrecedence() {
-    if (!isascii(CurTok)) return -1;
+    if (BinopPrecedence.find(CurTok) == BinopPrecedence.end()) return -1;
     int TokPrec = BinopPrecedence[CurTok];
     if (TokPrec <= 0) return -1;
     return TokPrec;