llvmir some opt

frontend/ast/decl/ConstDecl.java

@@ -0,0 +1,51 @@
+package frontend.ast.decl;
+
+import error.Errors;
+import error.ErrorType;
+
+import java.util.ArrayList;
+
+import error.Error;
+import frontend.ast.Node;
+import frontend.ast.SyntaxType;
+import frontend.ast.token.TokenNode;
+import frontend.lexer.TokenStream;
+import frontend.lexer.TokenType;
+
+public class ConstDecl extends Node {
+    public ConstDecl(TokenStream ts) {
+        super(SyntaxType.CONST_DECL, ts);
+    }
+
+    public void parse(Errors errors) {
+        TokenNode constkk = new TokenNode(this.ts);
+        addChild(constkk);
+        TokenNode intkk = new TokenNode(this.ts);
+        addChild(intkk);
+        while (true) {
+            ConstDef cdef = new ConstDef(this.ts);
+            cdef.parse(errors);
+            addChild(cdef);
+            if (getCurrToken().getType() != TokenType.COMMA) {
+                break;
+            } else {
+                TokenNode comma = new TokenNode(this.ts);
+                addChild(comma);
+            }
+        }
+        if (getCurrToken().getType() != TokenType.SEMICN) {
+            errors.addError(new Error(this.ts.peek(-1).getLine(), ErrorType.i));
+        } else {
+            TokenNode semicoln = new TokenNode(this.ts);
+            addChild(semicoln);
+        }
+    }
+
+    public ArrayList<ConstDef> GetConstDefs() {
+        ArrayList<ConstDef> constDefs = new ArrayList<>();
+        for (int i = 2; i < getChildren().size(); i += 2) {
+            constDefs.add((ConstDef) getChild(i));
+        }
+        return constDefs;
+    }
+}