6 files changed, 180 insertions, 0 deletions
diff --git a/main/core/parser/ast/ASTNode.java b/main/core/parser/ast/ASTNode.java
new file mode 100644
index 0000000..106ff75
--- /dev/null
+++ b/main/core/parser/ast/ASTNode.java
@@ -0,0 +1,33 @@
+package com.jantuomi.interpreter.main.core.parser.ast;
+
+import com.jantuomi.interpreter.main.core.parser.datatype.DataContainer;
+import com.jantuomi.interpreter.main.core.tokenizer.token.Token;
+
+import java.util.List;
+
+/**
+ * Created by jan on 11.6.2016.
+ */
+abstract public class ASTNode {
+
+    public abstract DataContainer evaluate();
+
+    protected Token source;
+
+    public ASTNode(Token token) {
+        this.source = token;
+    }
+
+    abstract List<ASTNode> getChildren();
+
+    public void print(int indent) {
+        for (int i = 0; i < indent; i++) {
+            System.out.print("\t");
+        }
+
+        System.out.println(source.toString());
+        for (ASTNode node : getChildren()) {
+            node.print(indent + 1);
+        }
+    }
+}
diff --git a/main/core/parser/ast/AdditionNode.java b/main/core/parser/ast/AdditionNode.java
new file mode 100644
index 0000000..3117e41
--- /dev/null
+++ b/main/core/parser/ast/AdditionNode.java
@@ -0,0 +1,34 @@
+package com.jantuomi.interpreter.main.core.parser.ast;
+
+import com.jantuomi.interpreter.main.core.parser.datatype.DataContainer;
+import com.jantuomi.interpreter.main.core.tokenizer.token.Token;
+
+import java.util.Arrays;
+import java.util.List;
+
+
+/**
+ * Created by jan on 13.6.2016.
+ */
+public class AdditionNode extends ExpressionNode {
+
+    private ExpressionNode lhs;
+    private ExpressionNode rhs;
+
+    public AdditionNode(ExpressionNode lhs, ExpressionNode rhs) {
+        super(new Token(Token.Type.AdditionToken));
+
+        this.lhs = lhs;
+        this.rhs = rhs;
+    }
+
+    @Override
+    public List<ASTNode> getChildren() {
+        return Arrays.asList(lhs, rhs);
+    }
+
+    @Override
+    public DataContainer evaluate() {
+        return null;
+    }
+}
diff --git a/main/core/parser/ast/AssignmentNode.java b/main/core/parser/ast/AssignmentNode.java
new file mode 100644
index 0000000..8d8f8bc
--- /dev/null
+++ b/main/core/parser/ast/AssignmentNode.java
@@ -0,0 +1,36 @@
+package com.jantuomi.interpreter.main.core.parser.ast;
+
+import com.jantuomi.interpreter.main.core.parser.datatype.DataContainer;
+import com.jantuomi.interpreter.main.core.runtime.State;
+import com.jantuomi.interpreter.main.core.tokenizer.token.Token;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Created by jan on 11.6.2016.
+ */
+public class AssignmentNode extends ASTNode {
+
+    private SymbolNode lhs;
+    private ExpressionNode rhs;
+
+    public AssignmentNode(SymbolNode lhs, ExpressionNode rhs) {
+        super(new Token(Token.Type.AssignmentToken));
+
+        this.lhs = lhs;
+        this.rhs = rhs;
+    }
+
+    @Override
+    public DataContainer evaluate() {
+        DataContainer value = rhs.evaluate();
+        State.getInstance().setSymbolValue(lhs.getSymbol(), value);
+        return value;
+    }
+
+    @Override
+    List<ASTNode> getChildren() {
+        return Arrays.asList(lhs, rhs);
+    }
+}
diff --git a/main/core/parser/ast/ExpressionNode.java b/main/core/parser/ast/ExpressionNode.java
new file mode 100644
index 0000000..ac1a190
--- /dev/null
+++ b/main/core/parser/ast/ExpressionNode.java
@@ -0,0 +1,12 @@
+package com.jantuomi.interpreter.main.core.parser.ast;
+
+import com.jantuomi.interpreter.main.core.tokenizer.token.Token;
+
+/**
+ * Created by jan on 11.6.2016.
+ */
+abstract public class ExpressionNode extends ASTNode {
+    public ExpressionNode(Token token) {
+        super(token);
+    }
+}
diff --git a/main/core/parser/ast/IntegerLiteralNode.java b/main/core/parser/ast/IntegerLiteralNode.java
new file mode 100644
index 0000000..b68adf0
--- /dev/null
+++ b/main/core/parser/ast/IntegerLiteralNode.java
@@ -0,0 +1,30 @@
+package com.jantuomi.interpreter.main.core.parser.ast;
+
+import com.jantuomi.interpreter.main.core.parser.datatype.DataContainer;
+import com.jantuomi.interpreter.main.core.tokenizer.token.Token;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Created by jan on 13.6.2016.
+ */
+public class IntegerLiteralNode extends ExpressionNode {
+
+    private int data;
+
+    public IntegerLiteralNode(Token token) {
+        super(token);
+        this.data = Integer.parseInt(token.getText());
+    }
+
+    @Override
+    List<ASTNode> getChildren() {
+        return Arrays.asList();
+    }
+
+    @Override
+    public DataContainer evaluate() {
+        return null;
+    }
+}
diff --git a/main/core/parser/ast/SymbolNode.java b/main/core/parser/ast/SymbolNode.java
new file mode 100644
index 0000000..1457851
--- /dev/null
+++ b/main/core/parser/ast/SymbolNode.java
@@ -0,0 +1,35 @@
+package com.jantuomi.interpreter.main.core.parser.ast;
+
+import com.jantuomi.interpreter.main.core.parser.datatype.DataContainer;
+import com.jantuomi.interpreter.main.core.runtime.State;
+import com.jantuomi.interpreter.main.core.tokenizer.token.Token;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Created by jan on 11.6.2016.
+ */
+public class SymbolNode extends ExpressionNode {
+    private String symbol;
+
+    public SymbolNode(Token token) {
+        super(token);
+
+        this.symbol = token.getText();
+    }
+
+    @Override
+    List<ASTNode> getChildren() {
+        return Arrays.asList();
+    }
+
+    public String getSymbol() {
+        return symbol;
+    }
+
+    @Override
+    public DataContainer evaluate() {
+        return State.getInstance().getSymbolValue(symbol);
+    }
+}