Initial commit

14 files changed, 180 insertions, 0 deletions

diff --git a/src/main/java/org/zwobble/couscous/ast/Assignment.java b/src/main/java/org/zwobble/couscous/ast/Assignment.java
new file mode 100644
index 0000000..aa7f89b
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/Assignment.java
@@ -0,0 +1,16 @@
+package org.zwobble.couscous.ast;
+
+import org.zwobble.couscous.ast.visitors.ExpressionNodeVisitor;
+
+import lombok.Value;
+
+@Value
+public class Assignment implements ExpressionNode {
+    VariableReferenceNode target;
+    ExpressionNode value;
+    
+    @Override
+    public <T> T accept(ExpressionNodeVisitor<T> visitor) {
+        return visitor.visit(this);
+    }
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/CallNode.java b/src/main/java/org/zwobble/couscous/ast/CallNode.java
new file mode 100644
index 0000000..d71c891
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/CallNode.java
@@ -0,0 +1,5 @@
+package org.zwobble.couscous.ast;
+
+public class CallNode {
+
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/ClassNode.java b/src/main/java/org/zwobble/couscous/ast/ClassNode.java
new file mode 100644
index 0000000..ffa5165
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/ClassNode.java
@@ -0,0 +1,14 @@
+package org.zwobble.couscous.ast;
+
+import java.util.List;
+
+import lombok.Builder;
+import lombok.Singular;
+import lombok.Value;
+
+@Builder
+@Value
+public class ClassNode {
+    @Singular
+    List<MethodNode> methods;
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/ExpressionNode.java b/src/main/java/org/zwobble/couscous/ast/ExpressionNode.java
new file mode 100644
index 0000000..097377a
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/ExpressionNode.java
@@ -0,0 +1,7 @@
+package org.zwobble.couscous.ast;
+
+import org.zwobble.couscous.ast.visitors.ExpressionNodeVisitor;
+
+public interface ExpressionNode {
+    <T> T accept(ExpressionNodeVisitor<T> visitor);
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/ExpressionStatementNode.java b/src/main/java/org/zwobble/couscous/ast/ExpressionStatementNode.java
new file mode 100644
index 0000000..ec04663
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/ExpressionStatementNode.java
@@ -0,0 +1,15 @@
+package org.zwobble.couscous.ast;
+
+import org.zwobble.couscous.ast.visitors.StatementNodeVisitor;
+
+import lombok.Value;
+
+@Value
+public class ExpressionStatementNode implements StatementNode {
+    ExpressionNode expression;
+
+    @Override
+    public <T> T accept(StatementNodeVisitor<T> visitor) {
+        return visitor.visit(this);
+    }
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/FormalArgumentNode.java b/src/main/java/org/zwobble/couscous/ast/FormalArgumentNode.java
new file mode 100644
index 0000000..da3a838
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/FormalArgumentNode.java
@@ -0,0 +1,9 @@
+package org.zwobble.couscous.ast;
+
+import lombok.Value;
+
+@Value
+public class FormalArgumentNode implements VariableNode {
+    int id;
+    String name;
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/LiteralNode.java b/src/main/java/org/zwobble/couscous/ast/LiteralNode.java
new file mode 100644
index 0000000..38688d8
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/LiteralNode.java
@@ -0,0 +1,26 @@
+package org.zwobble.couscous.ast;
+
+import org.zwobble.couscous.ast.visitors.ExpressionNodeVisitor;
+import org.zwobble.couscous.values.IntegerValue;
+import org.zwobble.couscous.values.InterpreterValue;
+import org.zwobble.couscous.values.StringValue;
+
+import lombok.Value;
+
+@Value
+public class LiteralNode implements ExpressionNode {
+    public static LiteralNode of(String value) {
+        return new LiteralNode(new StringValue(value));
+    }
+    
+    public static LiteralNode of(int value) {
+        return new LiteralNode(new IntegerValue(value));
+    }
+    
+    InterpreterValue value;
+
+    @Override
+    public <T> T accept(ExpressionNodeVisitor<T> visitor) {
+        return visitor.visit(this);
+    }
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/MethodNode.java b/src/main/java/org/zwobble/couscous/ast/MethodNode.java
new file mode 100644
index 0000000..91acbd5
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/MethodNode.java
@@ -0,0 +1,22 @@
+package org.zwobble.couscous.ast;
+
+import java.util.List;
+
+import lombok.Builder;
+import lombok.Singular;
+import lombok.Value;
+
+@Builder
+@Value
+public class MethodNode {
+    public static MethodNodeBuilder staticMethod(String name) {
+        return builder().isStatic(true).name(name);
+    }
+    
+    boolean isStatic;
+    String name;
+    @Singular
+    List<FormalArgumentNode> arguments; 
+    @Singular("statement")
+    List<StatementNode> body;
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/ReturnNode.java b/src/main/java/org/zwobble/couscous/ast/ReturnNode.java
new file mode 100644
index 0000000..529dbb5
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/ReturnNode.java
@@ -0,0 +1,15 @@
+package org.zwobble.couscous.ast;
+
+import org.zwobble.couscous.ast.visitors.StatementNodeVisitor;
+
+import lombok.Value;
+
+@Value
+public class ReturnNode implements StatementNode {
+    ExpressionNode value;
+
+    @Override
+    public <T> T accept(StatementNodeVisitor<T> visitor) {
+        return visitor.visit(this);
+    }
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/StatementNode.java b/src/main/java/org/zwobble/couscous/ast/StatementNode.java
new file mode 100644
index 0000000..773420e
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/StatementNode.java
@@ -0,0 +1,7 @@
+package org.zwobble.couscous.ast;
+
+import org.zwobble.couscous.ast.visitors.StatementNodeVisitor;
+
+public interface StatementNode {
+    <T> T accept(StatementNodeVisitor<T> visitor); 
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/VariableNode.java b/src/main/java/org/zwobble/couscous/ast/VariableNode.java
new file mode 100644
index 0000000..4c689c5
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/VariableNode.java
@@ -0,0 +1,5 @@
+package org.zwobble.couscous.ast;
+
+public interface VariableNode {
+    int getId();
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/VariableReferenceNode.java b/src/main/java/org/zwobble/couscous/ast/VariableReferenceNode.java
new file mode 100644
index 0000000..536a7c3
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/VariableReferenceNode.java
@@ -0,0 +1,19 @@
+package org.zwobble.couscous.ast;
+
+import org.zwobble.couscous.ast.visitors.ExpressionNodeVisitor;
+
+import lombok.Value;
+
+@Value
+public class VariableReferenceNode implements ExpressionNode {
+    public static VariableReferenceNode reference(VariableNode variable) {
+        return new VariableReferenceNode(variable.getId());
+    }
+    
+    int referentId;
+
+    @Override
+    public <T> T accept(ExpressionNodeVisitor<T> visitor) {
+        return visitor.visit(this);
+    }
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/visitors/ExpressionNodeVisitor.java b/src/main/java/org/zwobble/couscous/ast/visitors/ExpressionNodeVisitor.java
new file mode 100644
index 0000000..0167abc
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/visitors/ExpressionNodeVisitor.java
@@ -0,0 +1,11 @@
+package org.zwobble.couscous.ast.visitors;
+
+import org.zwobble.couscous.ast.Assignment;
+import org.zwobble.couscous.ast.LiteralNode;
+import org.zwobble.couscous.ast.VariableReferenceNode;
+
+public interface ExpressionNodeVisitor<T> {
+    T visit(LiteralNode literal);
+    T visit(VariableReferenceNode variableReference);
+    T visit(Assignment assignment);
+}
diff --git a/src/main/java/org/zwobble/couscous/ast/visitors/StatementNodeVisitor.java b/src/main/java/org/zwobble/couscous/ast/visitors/StatementNodeVisitor.java
new file mode 100644
index 0000000..6cec404
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/ast/visitors/StatementNodeVisitor.java
@@ -0,0 +1,9 @@
+package org.zwobble.couscous.ast.visitors;
+
+import org.zwobble.couscous.ast.ExpressionStatementNode;
+import org.zwobble.couscous.ast.ReturnNode;
+
+public interface StatementNodeVisitor<T> {
+    T visit(ReturnNode returnNode);
+    T visit(ExpressionStatementNode expressionStatement);
+}