llvmir some opt

frontend/ast/func/FuncFParam.java

@@ -0,0 +1,49 @@
+package frontend.ast.func;
+
+import frontend.ast.Node;
+import frontend.ast.SyntaxType;
+import frontend.lexer.TokenStream;
+import frontend.lexer.TokenType;
+
+import midend.symbol.Symbol;
+import midend.symbol.SymbolType;
+import midend.symbol.ArraySymbol;
+
+import error.Errors;
+import frontend.ast.token.TokenNode;
+import error.ErrorType;
+import error.Error;
+
+public class FuncFParam extends Node {
+    public FuncFParam(TokenStream ts) {
+        super(SyntaxType.FUNC_FORMAL_PARAM, ts);
+    }
+
+    public void parse(Errors errors) {
+        TokenNode intkk = new TokenNode(this.ts);
+        addChild(intkk);
+        TokenNode ident = new TokenNode(this.ts);
+        addChild(ident);
+        if (getCurrToken().getType() == TokenType.LBRACK) {
+            TokenNode lbrack = new TokenNode(this.ts);
+            addChild(lbrack);
+            if (getCurrToken().getType() == TokenType.RBRACK) {
+                TokenNode rbrack = new TokenNode(this.ts);
+                addChild(rbrack);
+            } else {
+                errors.addError(new Error(this.ts.peek(-1).getLine(), ErrorType.k));
+            }
+        }
+    }
+
+    public Symbol getSymbol() {
+        if (getChildren().size() == 2) {
+            TokenNode tn = (TokenNode) getChild(1);
+            return new Symbol(tn.getName(), SymbolType.INT, tn.getLine());
+        } else {
+            TokenNode tn = (TokenNode) getChild(1);
+            return new ArraySymbol(tn.getName(), SymbolType.INT_ARRAY, tn.getLine(), -1);   
+            //这里不求维数，因为函数形参为数组只是相当于一个指针
+        }
+    }
+}