Added binary operations +-*/

1 files changed, 10 insertions, 3 deletions

diff --git a/include/cps/Parser.h b/include/cps/Parser.h
index c24184f..1b27a22 100644
--- a/include/cps/Parser.h
+++ b/include/cps/Parser.h
@@ -3,22 +3,29 @@
 #include "cps/AST.h"
 #include <vector>
 #include <memory>
+#include <map>
 
 namespace cps {
 
 class Parser {
     Lexer &Lex;
     int CurTok;
+    
+    std::map<char, int> BinopPrecedence;
 
     int getNextToken();
+    int GetTokPrecedence();
+
     std::unique_ptr<ExprAST> ParseExpression();
+    std::unique_ptr<ExprAST> ParsePrimary();
+    std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec, std::unique_ptr<ExprAST> LHS); 
+
     std::unique_ptr<ExprAST> ParseNumberExpr();
-    std::unique_ptr<ExprAST> ParseParenExpr(); // 预留
     std::unique_ptr<ExprAST> ParseIdentifierExpr();
+    std::unique_ptr<ExprAST> ParseParenExpr();
 
 public:
-    Parser(Lexer &L) : Lex(L) { getNextToken(); }
-    
+    Parser(Lexer &L);
     std::vector<std::unique_ptr<StmtAST>> Parse();
 };