llvmir some opt

frontend/ast/exp/NumberExp.java

@@ -0,0 +1,21 @@
+package frontend.ast.exp;
+
+import frontend.ast.Node;
+import frontend.ast.SyntaxType;
+import frontend.lexer.TokenStream;
+import error.Errors;
+import frontend.ast.token.TokenNode;
+
+public class NumberExp extends Node {
+    public NumberExp(TokenStream ts) {
+        super(SyntaxType.NUMBER, ts);
+    }
+
+    public void parse(Errors errors) {
+        addChild(new TokenNode(ts)); //intconst
+    }
+
+    public int getValue() {
+        return Integer.parseInt(((TokenNode) getChild(0)).getValue());
+    }
+}