Grammar now uses reverse polish notation

6 files changed, 27 insertions, 107 deletions

diff --git a/main/core/parser/ast/ASTNode.java b/main/core/parser/ast/ASTNode.java
index 106ff75..4f840e3 100644
--- a/main/core/parser/ast/ASTNode.java
+++ b/main/core/parser/ast/ASTNode.java
@@ -18,6 +18,10 @@ abstract public class ASTNode {
         this.source = token;
     }
 
+    public Token.Type tokenType() {
+        return source.getTokenType();
+    }
+
     abstract List<ASTNode> getChildren();
 
     public void print(int indent) {
diff --git a/main/core/parser/ast/AdditionNode.java b/main/core/parser/ast/AdditionNode.java
index f6ebc84..46f67a4 100644
--- a/main/core/parser/ast/AdditionNode.java
+++ b/main/core/parser/ast/AdditionNode.java
@@ -6,31 +6,31 @@ import com.jantuomi.interpreter.main.core.tokenizer.token.Token;
 import java.util.Arrays;
 import java.util.List;
 
-
 /**
- * Created by jan on 13.6.2016.
+ * Created by jan on 16.6.2016.
  */
-public class AdditionNode extends ExpressionNode {
-
-    private ExpressionNode lhs;
-    private ExpressionNode rhs;
+public class AdditionNode extends ASTNode {
 
-    public AdditionNode(ExpressionNode lhs, ExpressionNode rhs) {
-        super(new Token(Token.Type.AdditionToken));
+    private ASTNode lhs;
+    private ASTNode rhs;
 
+    public AdditionNode(Token token, ASTNode lhs, ASTNode rhs) {
+        super(token);
         this.lhs = lhs;
         this.rhs = rhs;
     }
 
     @Override
-    public List<ASTNode> getChildren() {
-        return Arrays.asList(lhs, rhs);
-    }
+    public DataContainer evaluate() {
+        DataContainer operand1 = lhs.evaluate();
+        DataContainer operand2 = rhs.evaluate();
 
+        DataContainer result = operand1.add(operand2);
+        return result;
+
+    }
     @Override
-    public DataContainer evaluate() {
-        DataContainer lhs = this.lhs.evaluate();
-        DataContainer rhs = this.rhs.evaluate();
-        return lhs.add(rhs);
+    List<ASTNode> getChildren() {
+        return Arrays.asList(lhs, rhs);
     }
 }
diff --git a/main/core/parser/ast/AssignmentNode.java b/main/core/parser/ast/AssignmentNode.java
deleted file mode 100644
index 8d8f8bc..0000000
--- a/main/core/parser/ast/AssignmentNode.java
+++ /dev/null
@@ -1,36 +0,0 @@
-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
deleted file mode 100644
index ac1a190..0000000
--- a/main/core/parser/ast/ExpressionNode.java
+++ /dev/null
@@ -1,12 +0,0 @@
-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
index d2fceb1..68b57d7 100644
--- a/main/core/parser/ast/IntegerLiteralNode.java
+++ b/main/core/parser/ast/IntegerLiteralNode.java
@@ -8,24 +8,23 @@ import java.util.Arrays;
 import java.util.List;
 
 /**
- * Created by jan on 13.6.2016.
+ * Created by jan on 16.6.2016.
  */
-public class IntegerLiteralNode extends ExpressionNode {
-
-    private int data;
+public class IntegerLiteralNode extends ASTNode {
+    private IntegerDataContainer value;
 
     public IntegerLiteralNode(Token token) {
         super(token);
-        this.data = Integer.parseInt(token.getText());
+        value = new IntegerDataContainer(Integer.parseInt(token.getText()));
     }
 
     @Override
-    List<ASTNode> getChildren() {
-        return Arrays.asList();
+    public DataContainer evaluate() {
+        return value;
     }
 
     @Override
-    public DataContainer evaluate() {
-        return new IntegerDataContainer(data);
+    List<ASTNode> getChildren() {
+        return Arrays.asList();
     }
 }
diff --git a/main/core/parser/ast/SymbolNode.java b/main/core/parser/ast/SymbolNode.java
deleted file mode 100644
index 1457851..0000000
--- a/main/core/parser/ast/SymbolNode.java
+++ /dev/null
@@ -1,35 +0,0 @@
-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);
-    }
-}