Interpreter capable of handing variables

1 files changed, 84 insertions, 0 deletions

diff --git a/code/Interpreter/Expression.java b/code/Interpreter/Expression.java
new file mode 100644
index 0000000..85ade48
--- /dev/null
+++ b/code/Interpreter/Expression.java
@@ -0,0 +1,84 @@
+package Interpreter;
+
+abstract class Expression {
+    static class Binary extends Expression{
+
+        final Expression left;
+        final Expression right;
+        final Token op;
+
+        Binary(Expression left, Token op, Expression right){
+            this.left=left;
+            this.op=op;
+            this.right = right;
+        }
+
+        @Override
+        public String getExpressionType() {
+            return "binary";
+        }
+
+    }
+
+    static class Literal extends Expression{
+        final Token value;
+
+        Literal(Token value){
+            this.value=value;
+        }
+        
+
+        @Override
+        public String getExpressionType() {
+            return "literal";
+        }
+        
+    }
+
+    static class BracketedExpression extends Expression{
+        final Expression expr;
+
+        BracketedExpression(Expression expr){
+            this.expr=expr;
+        }
+
+        @Override
+        public String getExpressionType() {
+            return "bracket";
+        }
+        
+        
+    }
+
+    static class AssignmentExpression extends Expression{
+        final Token name;
+        final Expression value;
+
+        AssignmentExpression(Token name,Expression value){
+            this.name=name;
+            this.value=value;
+        }
+
+
+        @Override
+        public String getExpressionType() {
+            return "assign";
+        }
+        
+    }
+
+    static class Variable extends Expression{
+        
+        Variable(Token name){
+            this.name=name;
+
+        }
+        @Override
+        public String getExpressionType() {
+            return "var";
+        }
+        final Token name;
+        
+    }
+    public abstract String getExpressionType();
+}