From f2ec038199ee31f2038228b6112ee2cd6dcea815 Mon Sep 17 00:00:00 2001
From: Denis Zhdanov <Denis.Zhdanov@jetbrains.com>
Date: Thu, 22 Apr 2010 16:31:14 +0400
Subject: [PATCH] IDEA-43962 Indentation error on deep nesting levels

Initial version.

Consists of code moved from AbstractJavaBlock.createChildWrap() method.
---
 .../wrap/impl/JavaChildBlockWrapFactory.java  | 94 +++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 java/java-impl/src/com/intellij/psi/formatter/java/wrap/impl/JavaChildBlockWrapFactory.java

diff --git a/java/java-impl/src/com/intellij/psi/formatter/java/wrap/impl/JavaChildBlockWrapFactory.java b/java/java-impl/src/com/intellij/psi/formatter/java/wrap/impl/JavaChildBlockWrapFactory.java
new file mode 100644
index 000000000000..8bcf0e7d4dfa
--- /dev/null
+++ b/java/java-impl/src/com/intellij/psi/formatter/java/wrap/impl/JavaChildBlockWrapFactory.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2000-2010 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.psi.formatter.java.wrap.impl;
+
+import com.intellij.formatting.ASTBlock;
+import com.intellij.formatting.Wrap;
+import com.intellij.formatting.WrapType;
+import com.intellij.lang.ASTNode;
+import com.intellij.psi.codeStyle.CodeStyleSettings;
+import com.intellij.psi.formatter.java.FormattingAstUtil;
+import com.intellij.psi.formatter.java.wrap.ReservedWrapsProvider;
+import com.intellij.psi.impl.source.tree.JavaElementType;
+import com.intellij.psi.tree.IElementType;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Encapsulates algorithm of construction {@link Wrap wraps} for sub-blocks of particular {@link ASTBlock block} taking into
+ * consideration current formatting settings.
+ * <p/>
+ * Thread-safe.
+ *
+ * @author Denis Zhdanov
+ * @since Apr 21, 2010 4:49:49 PM
+ */
+public class JavaChildBlockWrapFactory {
+
+  /**
+   * Creates {@link Wrap wrap} to be used with the children blocks of the the given block.
+   *
+   * @param block                   target block which sub-blocks should use wrap created by the current method
+   * @param settings                code formatting settings to consider during wrap construction
+   * @param reservedWrapsProvider   reserved {@code 'element type -> wrap instance'} mappings provider. <b>Note:</b> this
+   *                                argument is considered to be a part of legacy heritage and is intended to be removed as
+   *                                soon as formatting code refactoring is done
+   * @return                        wrap to use for the sub-blocks of the given block
+   */
+  @Nullable
+  public Wrap create(ASTBlock block, CodeStyleSettings settings, ReservedWrapsProvider reservedWrapsProvider) {
+    ASTNode node = block.getNode();
+    Wrap wrap = block.getWrap();
+    final IElementType nodeType = node.getElementType();
+    if (nodeType == JavaElementType.EXTENDS_LIST || nodeType == JavaElementType.IMPLEMENTS_LIST) {
+      return Wrap.createWrap(settings.EXTENDS_LIST_WRAP, false);
+    }
+    else if (nodeType == JavaElementType.BINARY_EXPRESSION) {
+      Wrap actualWrap = wrap != null ? wrap : reservedWrapsProvider.getReservedWrap(JavaElementType.BINARY_EXPRESSION);
+      if (actualWrap == null) {
+        return Wrap.createWrap(settings.BINARY_OPERATION_WRAP, false);
+      }
+      else {
+        if (!FormattingAstUtil.binaryExpressionHasTheSamePriority(node, node.getTreeParent())) {
+          return Wrap.createChildWrap(actualWrap, WrapType.byLegacyRepresentation(settings.BINARY_OPERATION_WRAP), false);
+        }
+        else {
+          return actualWrap;
+        }
+      }
+    }
+    else if (nodeType == JavaElementType.CONDITIONAL_EXPRESSION) {
+      return Wrap.createWrap(settings.TERNARY_OPERATION_WRAP, false);
+    }
+    else if (nodeType == JavaElementType.ASSERT_STATEMENT) {
+      return Wrap.createWrap(settings.ASSERT_STATEMENT_WRAP, false);
+    }
+    else if (nodeType == JavaElementType.FOR_STATEMENT) {
+      return Wrap.createWrap(settings.FOR_STATEMENT_WRAP, false);
+    }
+    else if (nodeType == JavaElementType.THROWS_LIST) {
+      return Wrap.createWrap(settings.THROWS_LIST_WRAP, true);
+    }
+    else if (nodeType == JavaElementType.CODE_BLOCK) {
+      return Wrap.createWrap(Wrap.NORMAL, false);
+    }
+    else if (FormattingAstUtil.isAssignment(node)) {
+      return Wrap.createWrap(settings.ASSIGNMENT_WRAP, true);
+    }
+    else {
+      return null;
+    }
+  }
+}