From 8e7089a5d6ba1f4f50a90133bb50bc5c6c554aff Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Thu, 13 Jun 2024 11:00:06 +0200
Subject: Set up visitor (#3)
Co-authored-by: geno <gabriele.genovese2@studio.unibo.it>
---
src/ast/nodes/TrailerNode.java | 78 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 78 insertions(+)
create mode 100644 src/ast/nodes/TrailerNode.java
(limited to 'src/ast/nodes/TrailerNode.java')
diff --git a/src/ast/nodes/TrailerNode.java b/src/ast/nodes/TrailerNode.java
new file mode 100644
index 0000000..fa7e1ed
--- /dev/null
+++ b/src/ast/nodes/TrailerNode.java
@@ -0,0 +1,78 @@
+package com.clp.project.ast.nodes;
+
+import java.util.ArrayList;
+
+import com.clp.project.semanticanalysis.SemanticError;
+import com.clp.project.semanticanalysis.SymbolTable;
+import com.clp.project.ast.types.*;
+import org.antlr.v4.runtime.tree.TerminalNode;
+
+/**
+ * Node for the `trailer` statement of the grammar.
+ */
+public class TrailerNode implements Node {
+ private Node arglist;
+ private ArrayList<Node> exprs;
+ private TerminalNode methodCall;
+ private boolean isEmpty;
+
+ public TrailerNode(Node arglist, ArrayList<Node> exprs, TerminalNode methodCall) {
+ this.arglist = arglist;
+ this.exprs = exprs;
+ this.methodCall = methodCall;
+
+ this.isEmpty = (this.arglist == null && this.exprs.size() == 0 && this.methodCall == null);
+ }
+
+ @Override
+ public ArrayList<SemanticError> checkSemantics(SymbolTable ST, int _nesting) {
+ ArrayList<SemanticError> errors = new ArrayList<SemanticError>();
+
+ if (arglist != null) {
+ errors.addAll(arglist.checkSemantics(ST, _nesting));
+ }
+
+ for (var expr : exprs) {
+ errors.addAll(expr.checkSemantics(ST, _nesting));
+ }
+
+ return errors;
+ }
+
+ @Override
+ public Type typeCheck() {
+ return new VoidType();
+ }
+
+ // TODO: add code generation for trailer node
+ @Override
+ public String codeGeneration() {
+ return "";
+ }
+
+ @Override
+ public String toPrint(String prefix) {
+ String str = prefix + "TrailerNode\n";
+
+ prefix += " ";
+
+ if (arglist != null) {
+ str += arglist.toPrint(prefix);
+ }
+
+ for (var expr : exprs) {
+ str += expr.toPrint(prefix);
+ }
+
+ if (methodCall != null) {
+ str += prefix + "Method(" + methodCall + ")\n";
+ }
+
+ if (isEmpty) {
+ str += prefix + "()\n";
+ }
+
+ return str;
+ }
+
+}
--
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