Declare Variable, Add type annotation action for Introduce Variable feature.

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetProperty.java

@@ -137,4 +137,9 @@ public class JetProperty extends JetTypeParameterListOwner implements JetModifie
     public ASTNode getValOrVarNode() {
         return getNode().findChildByType(TokenSet.create(VAL_KEYWORD, VAR_KEYWORD));
     }
+
+    @Nullable
+    public ASTNode getEqualsSign() {
+        return getNode().findChildByType(TokenSet.create(EQ));
+    }
 }

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetPsiFactory.java

@@ -16,6 +16,7 @@
 
 package org.jetbrains.jet.lang.psi;
 
+import com.intellij.lang.ASTNode;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Pair;
 import com.intellij.psi.PsiElement;
@@ -24,6 +25,7 @@ import com.intellij.util.LocalTimeCounter;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lexer.JetKeywordToken;
+import org.jetbrains.jet.lexer.JetTokens;
 import org.jetbrains.jet.plugin.JetFileType;
 
 import java.util.List;
@@ -32,6 +34,16 @@ import java.util.List;
  * @author max
  */
 public class JetPsiFactory {
+    public static ASTNode createValNode(Project project) {
+        JetProperty property = createProperty(project, "val x = 1");
+        return property.getValOrVarNode();
+    }
+
+    public static ASTNode createVarNode(Project project) {
+        JetProperty property = createProperty(project, "var x = 1");
+        return property.getValOrVarNode();
+    }
+
     public static JetExpression createExpression(Project project, String text) {
         JetProperty property = createProperty(project, "val x = " + text);
         return property.getInitializer();
@@ -48,6 +60,11 @@ public class JetPsiFactory {
         return Pair.create(property.findElementAt(5), property.findElementAt(7));
     }
 
+    public static ASTNode createColonNode(Project project) {
+        JetProperty property = createProperty(project, "val x: Int");
+        return property.getNode().findChildByType(JetTokens.COLON);
+    }
+
     public static PsiElement createWhiteSpace(Project project) {
         return createWhiteSpace(project, " ");
     }