From 8a7cb643ac9b0e895123c176803af15b75f90cf1 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sat, 14 Nov 2015 14:30:50 +0000
Subject: Parse while loops

---
 .../org/zwobble/couscous/ast/StatementNode.java    |  6 +++
 .../java/org/zwobble/couscous/ast/WhileNode.java   | 55 ++++++++++++++++++++++
 .../zwobble/couscous/ast/visitors/NodeVisitor.java | 18 +------
 .../ast/visitors/NodeVisitorWithEmptyDefaults.java | 21 ++-------
 .../couscous/ast/visitors/NodeVisitors.java        | 24 +++-------
 .../couscous/ast/visitors/StatementNodeMapper.java |  6 +--
 6 files changed, 77 insertions(+), 53 deletions(-)
 create mode 100644 src/main/java/org/zwobble/couscous/ast/WhileNode.java

(limited to 'src/main/java/org/zwobble/couscous/ast')

diff --git a/src/main/java/org/zwobble/couscous/ast/StatementNode.java b/src/main/java/org/zwobble/couscous/ast/StatementNode.java
index 1186619..6ba198f 100644
--- a/src/main/java/org/zwobble/couscous/ast/StatementNode.java
+++ b/src/main/java/org/zwobble/couscous/ast/StatementNode.java
@@ -33,6 +33,12 @@ public interface StatementNode extends Node {
                 visitor.visit(ifStatement);
                 return null;
             }
+
+            @Override
+            public Void visit(WhileNode whileLoop) {
+                visitor.visit(whileLoop);
+                return null;
+            }
         });
     }
 }
diff --git a/src/main/java/org/zwobble/couscous/ast/WhileNode.java b/src/main/java/org/zwobble/couscous/ast/WhileNode.java
new file mode 100644
index 0000000..0a67aef
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/WhileNode.java
@@ -0,0 +1,55 @@
+package org.zwobble.couscous.ast;
+
+import com.google.common.base.Objects;
+import org.zwobble.couscous.ast.visitors.StatementNodeMapper;
+
+import java.util.List;
+
+public class WhileNode implements StatementNode {
+    public static WhileNode whileLoop(ExpressionNode condition, List<StatementNode> body) {
+        return new WhileNode(condition, body);
+    }
+
+    private final ExpressionNode condition;
+    private final List<StatementNode> body;
+
+    public WhileNode(ExpressionNode condition, List<StatementNode> body) {
+        this.condition = condition;
+        this.body = body;
+    }
+
+    public ExpressionNode getCondition() {
+        return condition;
+    }
+
+    public List<StatementNode> getBody() {
+        return body;
+    }
+
+    @Override
+    public <T> T accept(StatementNodeMapper<T> visitor) {
+        return visitor.visit(this);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        WhileNode whileNode = (WhileNode) o;
+        return Objects.equal(condition, whileNode.condition) &&
+            Objects.equal(body, whileNode.body);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(condition, body);
+    }
+
+    @Override
+    public String toString() {
+        return "WhileNode(" +
+            "condition=" + condition +
+            ", body=" + body +
+            ')';
+    }
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitor.java b/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitor.java
index ce6bb52..8d42f5c 100644
--- a/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitor.java
+++ b/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitor.java
@@ -1,21 +1,6 @@
 package org.zwobble.couscous.ast.visitors;
 
-import org.zwobble.couscous.ast.AssignmentNode;
-import org.zwobble.couscous.ast.ClassNode;
-import org.zwobble.couscous.ast.ConstructorCallNode;
-import org.zwobble.couscous.ast.ConstructorNode;
-import org.zwobble.couscous.ast.ExpressionStatementNode;
-import org.zwobble.couscous.ast.FieldAccessNode;
-import org.zwobble.couscous.ast.IfStatementNode;
-import org.zwobble.couscous.ast.LiteralNode;
-import org.zwobble.couscous.ast.LocalVariableDeclarationNode;
-import org.zwobble.couscous.ast.MethodCallNode;
-import org.zwobble.couscous.ast.MethodNode;
-import org.zwobble.couscous.ast.ReturnNode;
-import org.zwobble.couscous.ast.StaticMethodCallNode;
-import org.zwobble.couscous.ast.TernaryConditionalNode;
-import org.zwobble.couscous.ast.ThisReferenceNode;
-import org.zwobble.couscous.ast.VariableReferenceNode;
+import org.zwobble.couscous.ast.*;
 
 public interface NodeVisitor {
     void visit(LiteralNode literal);
@@ -32,6 +17,7 @@ public interface NodeVisitor {
     void visit(ExpressionStatementNode expressionStatement);
     void visit(LocalVariableDeclarationNode localVariableDeclaration);
     void visit(IfStatementNode ifStatement);
+    void visit(WhileNode whileLoop);
     
     void visit(ClassNode classNode);
     void visit(MethodNode methodNode);
diff --git a/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitorWithEmptyDefaults.java b/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitorWithEmptyDefaults.java
index fe57a28..c8dd2cf 100644
--- a/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitorWithEmptyDefaults.java
+++ b/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitorWithEmptyDefaults.java
@@ -1,21 +1,6 @@
 package org.zwobble.couscous.ast.visitors;
 
-import org.zwobble.couscous.ast.AssignmentNode;
-import org.zwobble.couscous.ast.ClassNode;
-import org.zwobble.couscous.ast.ConstructorCallNode;
-import org.zwobble.couscous.ast.ConstructorNode;
-import org.zwobble.couscous.ast.ExpressionStatementNode;
-import org.zwobble.couscous.ast.FieldAccessNode;
-import org.zwobble.couscous.ast.IfStatementNode;
-import org.zwobble.couscous.ast.LiteralNode;
-import org.zwobble.couscous.ast.LocalVariableDeclarationNode;
-import org.zwobble.couscous.ast.MethodCallNode;
-import org.zwobble.couscous.ast.MethodNode;
-import org.zwobble.couscous.ast.ReturnNode;
-import org.zwobble.couscous.ast.StaticMethodCallNode;
-import org.zwobble.couscous.ast.TernaryConditionalNode;
-import org.zwobble.couscous.ast.ThisReferenceNode;
-import org.zwobble.couscous.ast.VariableReferenceNode;
+import org.zwobble.couscous.ast.*;
 
 public interface NodeVisitorWithEmptyDefaults extends NodeVisitor {
     @Override
@@ -69,6 +54,10 @@ public interface NodeVisitorWithEmptyDefaults extends NodeVisitor {
     @Override
     default void visit(IfStatementNode ifStatement) {
     }
+
+    @Override
+    default void visit(WhileNode whileLoop) {
+    }
     
     @Override
     default void visit(ClassNode classNode) {
diff --git a/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitors.java b/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitors.java
index 1bcc226..78a8254 100644
--- a/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitors.java
+++ b/src/main/java/org/zwobble/couscous/ast/visitors/NodeVisitors.java
@@ -2,23 +2,7 @@ package org.zwobble.couscous.ast.visitors;
 
 import java.util.List;
 
-import org.zwobble.couscous.ast.AssignmentNode;
-import org.zwobble.couscous.ast.ClassNode;
-import org.zwobble.couscous.ast.ConstructorCallNode;
-import org.zwobble.couscous.ast.ConstructorNode;
-import org.zwobble.couscous.ast.ExpressionStatementNode;
-import org.zwobble.couscous.ast.FieldAccessNode;
-import org.zwobble.couscous.ast.IfStatementNode;
-import org.zwobble.couscous.ast.LiteralNode;
-import org.zwobble.couscous.ast.LocalVariableDeclarationNode;
-import org.zwobble.couscous.ast.MethodCallNode;
-import org.zwobble.couscous.ast.MethodNode;
-import org.zwobble.couscous.ast.Node;
-import org.zwobble.couscous.ast.ReturnNode;
-import org.zwobble.couscous.ast.StaticMethodCallNode;
-import org.zwobble.couscous.ast.TernaryConditionalNode;
-import org.zwobble.couscous.ast.ThisReferenceNode;
-import org.zwobble.couscous.ast.VariableReferenceNode;
+import org.zwobble.couscous.ast.*;
 
 public class NodeVisitors {
     public static void visitAll(Node node, NodeVisitor visitor) {
@@ -102,6 +86,12 @@ public class NodeVisitors {
                 visitAll(ifStatement.getFalseBranch());
             }
 
+            @Override
+            public void visit(WhileNode whileLoop) {
+                whileLoop.getCondition().accept(visitor);
+                visitAll(whileLoop.getBody());
+            }
+
             @Override
             public void visit(ClassNode classNode) {
                 visitor.visit(classNode);
diff --git a/src/main/java/org/zwobble/couscous/ast/visitors/StatementNodeMapper.java b/src/main/java/org/zwobble/couscous/ast/visitors/StatementNodeMapper.java
index fe639bd..33fbbd3 100644
--- a/src/main/java/org/zwobble/couscous/ast/visitors/StatementNodeMapper.java
+++ b/src/main/java/org/zwobble/couscous/ast/visitors/StatementNodeMapper.java
@@ -1,13 +1,11 @@
 package org.zwobble.couscous.ast.visitors;
 
-import org.zwobble.couscous.ast.ExpressionStatementNode;
-import org.zwobble.couscous.ast.IfStatementNode;
-import org.zwobble.couscous.ast.LocalVariableDeclarationNode;
-import org.zwobble.couscous.ast.ReturnNode;
+import org.zwobble.couscous.ast.*;
 
 public interface StatementNodeMapper<T> {
     T visit(ReturnNode returnNode);
     T visit(ExpressionStatementNode expressionStatement);
     T visit(LocalVariableDeclarationNode localVariableDeclaration);
     T visit(IfStatementNode ifStatement);
+    T visit(WhileNode whileLoop);
 }
-- 
cgit v1.2.3