String.length property added

idea/src/org/jetbrains/jet/codegen/intrinsics/IntrinsicMethods.java

@@ -72,6 +72,7 @@ public class IntrinsicMethods {
         declareIntrinsicFunction("String", "plus", 1, new Concat());
 
         declareIntrinsicStringMethods();
+        declareIntrinsicProperty("String", "length", new StringLength());
     }
 
     private void declareIntrinsicStringMethods() {

idea/src/org/jetbrains/jet/codegen/intrinsics/StringLength.java

@@ -0,0 +1,23 @@
+package org.jetbrains.jet.codegen.intrinsics;
+
+import com.intellij.psi.PsiElement;
+import org.jetbrains.jet.codegen.ExpressionCodegen;
+import org.jetbrains.jet.codegen.JetTypeMapper;
+import org.jetbrains.jet.codegen.StackValue;
+import org.jetbrains.jet.lang.psi.JetExpression;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.commons.InstructionAdapter;
+
+import java.util.List;
+
+/**
+ * @author alex.tkachman
+ */
+public class StringLength implements IntrinsicMethod {
+    @Override
+    public StackValue generate(ExpressionCodegen codegen, InstructionAdapter v, Type expectedType, PsiElement element, List<JetExpression> arguments, StackValue receiver) {
+        receiver.put(JetTypeMapper.TYPE_OBJECT, v);
+        v.invokevirtual("java/lang/String", "length", "()I");
+        return StackValue.onStack(Type.INT_TYPE);
+    }
+}