1 files changed, 144 insertions, 0 deletions
diff --git a/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/modules/decompiler/stats/SequenceStatement.java b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/modules/decompiler/stats/SequenceStatement.java
new file mode 100644
index 000000000000..eccce91fd051
--- /dev/null
+++ b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/modules/decompiler/stats/SequenceStatement.java
@@ -0,0 +1,144 @@
+/*
+ * Copyright 2000-2014 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 org.jetbrains.java.decompiler.modules.decompiler.stats;
+
+import org.jetbrains.java.decompiler.main.DecompilerContext;
+import org.jetbrains.java.decompiler.modules.decompiler.DecHelper;
+import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor;
+import org.jetbrains.java.decompiler.modules.decompiler.StatEdge;
+import org.jetbrains.java.decompiler.util.InterpreterUtil;
+
+import java.util.Arrays;
+import java.util.List;
+
+
+public class SequenceStatement extends Statement {
+
+
+  // *****************************************************************************
+  // constructors
+  // *****************************************************************************
+
+  private SequenceStatement() {
+    type = Statement.TYPE_SEQUENCE;
+  }
+
+  public SequenceStatement(List<Statement> lst) {
+
+    this();
+
+    lastBasicType = lst.get(lst.size() - 1).getLastBasicType();
+
+    for (Statement st : lst) {
+      stats.addWithKey(st, st.id);
+    }
+
+    first = stats.get(0);
+  }
+
+  private SequenceStatement(Statement head, Statement tail) {
+
+    this(Arrays.asList(head, tail));
+
+    List<StatEdge> lstSuccs = tail.getSuccessorEdges(STATEDGE_DIRECT_ALL);
+    if (!lstSuccs.isEmpty()) {
+      StatEdge edge = lstSuccs.get(0);
+
+      if (edge.getType() == StatEdge.TYPE_REGULAR && edge.getDestination() != head) {
+        post = edge.getDestination();
+      }
+    }
+  }
+
+
+  // *****************************************************************************
+  // public methods
+  // *****************************************************************************
+
+  public static Statement isHead2Block(Statement head) {
+
+    if (head.getLastBasicType() != Statement.LASTBASICTYPE_GENERAL) {
+      return null;
+    }
+
+    // at most one outgoing edge
+    StatEdge edge = null;
+    List<StatEdge> lstSuccs = head.getSuccessorEdges(STATEDGE_DIRECT_ALL);
+    if (!lstSuccs.isEmpty()) {
+      edge = lstSuccs.get(0);
+    }
+
+    if (edge != null && edge.getType() == StatEdge.TYPE_REGULAR) {
+      Statement stat = edge.getDestination();
+
+      if (stat != head && stat.getPredecessorEdges(StatEdge.TYPE_REGULAR).size() == 1
+          && !stat.isMonitorEnter()) {
+
+        if (stat.getLastBasicType() == Statement.LASTBASICTYPE_GENERAL) {
+          if (DecHelper.checkStatementExceptions(Arrays.asList(head, stat))) {
+            return new SequenceStatement(head, stat);
+          }
+        }
+      }
+    }
+
+    return null;
+  }
+
+  public String toJava(int indent) {
+
+    StringBuilder buf = new StringBuilder();
+
+    String indstr = null;
+    boolean islabeled = isLabeled();
+
+    String new_line_separator = DecompilerContext.getNewLineSeparator();
+
+    buf.append(ExprProcessor.listToJava(varDefinitions, indent));
+
+    if (islabeled) {
+      indstr = InterpreterUtil.getIndentString(indent);
+      indent++;
+      buf.append(indstr).append("label").append(this.id).append(": {").append(new_line_separator);
+    }
+
+    boolean notempty = false;
+
+    for (int i = 0; i < stats.size(); i++) {
+
+      Statement st = stats.get(i);
+
+      if (i > 0 && notempty) {
+        buf.append(new_line_separator);
+      }
+
+      String str = ExprProcessor.jmpWrapper(st, indent, false);
+      buf.append(str);
+
+      notempty = (str.trim().length() > 0);
+    }
+
+    if (islabeled) {
+      buf.append(indstr).append("}").append(new_line_separator);
+    }
+
+    return buf.toString();
+  }
+
+  public Statement getSimpleCopy() {
+    return new SequenceStatement();
+  }
+}