Add tokenizer, parser and support for certain operations

1 files changed, 36 insertions, 0 deletions

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);
+    }
+}