[java-decompiler] utility classes reorganized

src/org/jetbrains/java/decompiler/code/InstructionSequence.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2015 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -18,7 +18,7 @@ package org.jetbrains.java.decompiler.code;
 import org.jetbrains.java.decompiler.code.interpreter.Util;
 import org.jetbrains.java.decompiler.main.DecompilerContext;
 import org.jetbrains.java.decompiler.struct.StructContext;
-import org.jetbrains.java.decompiler.util.InterpreterUtil;
+import org.jetbrains.java.decompiler.util.TextUtil;
 import org.jetbrains.java.decompiler.util.VBStyleCollection;
 
 import java.io.DataOutputStream;
@@ -157,7 +157,7 @@ public int getOffset(int index) {
     StringBuilder buf = new StringBuilder();
 
     for (int i = 0; i < collinstr.size(); i++) {
-    buf.append(InterpreterUtil.getIndentString(indent));
+    buf.append(TextUtil.getIndentString(indent));
       buf.append(collinstr.getKey(i).intValue());
       buf.append(": ");
       buf.append(collinstr.get(i).toString());

src/org/jetbrains/java/decompiler/main/decompiler/PrintStreamLogger.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2014 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -16,7 +16,7 @@
 package org.jetbrains.java.decompiler.main.decompiler;
 
 import org.jetbrains.java.decompiler.main.extern.IFernflowerLogger;
-import org.jetbrains.java.decompiler.util.InterpreterUtil;
+import org.jetbrains.java.decompiler.util.TextUtil;
 
 import java.io.PrintStream;
 
@@ -33,7 +33,7 @@ public class PrintStreamLogger extends IFernflowerLogger {
   @Override
   public void writeMessage(String message, Severity severity) {
     if (accepts(severity)) {
-      stream.println(severity.prefix + InterpreterUtil.getIndentString(indent) + message);
+      stream.println(severity.prefix + TextUtil.getIndentString(indent) + message);
     }
   }
 

src/org/jetbrains/java/decompiler/main/rels/ClassWrapper.java

@@ -28,7 +28,6 @@ import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPair;
 import org.jetbrains.java.decompiler.struct.StructClass;
 import org.jetbrains.java.decompiler.struct.StructField;
 import org.jetbrains.java.decompiler.struct.StructMethod;
-import org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute;
 import org.jetbrains.java.decompiler.struct.attr.StructLocalVariableTableAttribute;
 import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor;
 import org.jetbrains.java.decompiler.util.InterpreterUtil;
@@ -162,9 +161,7 @@ public class ClassWrapper {
 
       // if debug information present and should be used
       if (DecompilerContext.getOption(IFernflowerPreferences.USE_DEBUG_VAR_NAMES)) {
-        StructLocalVariableTableAttribute attr = (StructLocalVariableTableAttribute)mt.getAttributes().getWithKey(
+        StructLocalVariableTableAttribute attr = mt.getLocalVariableAttr();
-          StructGeneralAttribute.ATTRIBUTE_LOCAL_VARIABLE_TABLE);
-
         if (attr != null) {
           varProc.setDebugVarNames(attr.getMapVarNames());
         }

src/org/jetbrains/java/decompiler/main/rels/MethodWrapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2015 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -26,25 +26,17 @@ import org.jetbrains.java.decompiler.struct.StructMethod;
 import java.util.HashSet;
 import java.util.List;
 
-
 public class MethodWrapper {
-
   public final RootStatement root;
-
   public final VarProcessor varproc;
-
   public final StructMethod methodStruct;
-
   public final CounterContainer counter;
+  public final HashSet<String> setOuterVarNames = new HashSet<String>();
 
   public DirectGraph graph;
-
   public List<VarVersionPair> signatureFields;
-
   public boolean decompiledWithErrors;
 
-  public final HashSet<String> setOuterVarNames = new HashSet<String>();
-
   public MethodWrapper(RootStatement root, VarProcessor varproc, StructMethod methodStruct, CounterContainer counter) {
     this.root = root;
     this.varproc = varproc;
@@ -54,8 +46,7 @@ public class MethodWrapper {
 
   public DirectGraph getOrBuildGraph() {
     if (graph == null && root != null) {
-      FlattenStatementsHelper flatthelper = new FlattenStatementsHelper();
+      graph = new FlattenStatementsHelper().buildDirectGraph(root);
-      graph = flatthelper.buildDirectGraph(root);
     }
     return graph;
   }

src/org/jetbrains/java/decompiler/modules/decompiler/exps/ConstExprent.java

@@ -27,6 +27,7 @@ import org.jetbrains.java.decompiler.struct.match.MatchEngine;
 import org.jetbrains.java.decompiler.struct.match.MatchNode;
 import org.jetbrains.java.decompiler.struct.match.MatchNode.RuleValue;
 import org.jetbrains.java.decompiler.util.InterpreterUtil;
+import org.jetbrains.java.decompiler.util.TextUtil;
 
 import java.util.*;
 import java.util.Map.Entry;
@@ -131,11 +132,11 @@ public class ConstExprent extends Exprent {
           String ret = ESCAPES.get(val);
           if (ret == null) {
             char c = (char)val.intValue();
-            if (c >= 32 && c < 127 || !ascii && InterpreterUtil.isPrintableUnicode(c)) {
+            if (c >= 32 && c < 127 || !ascii && TextUtil.isPrintableUnicode(c)) {
               ret = String.valueOf(c);
             }
             else {
-              ret = InterpreterUtil.charToUnicodeLiteral(c);
+              ret = TextUtil.charToUnicodeLiteral(c);
             }
           }
           return new TextBuffer(ret).enclose("\'", "\'");
@@ -307,11 +308,11 @@ public class ConstExprent extends Exprent {
           buffer.append("\\\'");
           break;
         default:
-          if (c >= 32 && c < 127 || !ascii && InterpreterUtil.isPrintableUnicode(c)) {
+          if (c >= 32 && c < 127 || !ascii && TextUtil.isPrintableUnicode(c)) {
             buffer.append(c);
           }
           else {
-            buffer.append(InterpreterUtil.charToUnicodeLiteral(c));
+            buffer.append(TextUtil.charToUnicodeLiteral(c));
           }
       }
     }

src/org/jetbrains/java/decompiler/modules/decompiler/exps/FieldExprent.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2014 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -23,6 +23,7 @@ import org.jetbrains.java.decompiler.main.collectors.BytecodeMappingTracer;
 import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
 import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor;
 import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPair;
+import org.jetbrains.java.decompiler.struct.attr.StructLocalVariableTableAttribute;
 import org.jetbrains.java.decompiler.struct.consts.LinkConstant;
 import org.jetbrains.java.decompiler.struct.gen.FieldDescriptor;
 import org.jetbrains.java.decompiler.struct.gen.VarType;
@@ -30,7 +31,6 @@ import org.jetbrains.java.decompiler.struct.match.MatchEngine;
 import org.jetbrains.java.decompiler.struct.match.MatchNode;
 import org.jetbrains.java.decompiler.struct.match.MatchNode.RuleValue;
 import org.jetbrains.java.decompiler.util.InterpreterUtil;
-import org.jetbrains.java.decompiler.util.StructUtils;
 import org.jetbrains.java.decompiler.util.TextUtil;
 
 import java.util.ArrayList;
@@ -38,7 +38,6 @@ import java.util.List;
 import java.util.Set;
 
 public class FieldExprent extends Exprent {
-
   private final String name;
   private final String classname;
   private final boolean isStatic;
@@ -85,7 +84,15 @@ public class FieldExprent extends Exprent {
   }
 
   private boolean isAmbiguous() {
-    return StructUtils.getCurrentMethodLocalVariableNames().contains(name);
+    MethodWrapper method = (MethodWrapper)DecompilerContext.getProperty(DecompilerContext.CURRENT_METHOD_WRAPPER);
+    if (method != null) {
+      StructLocalVariableTableAttribute attr = method.methodStruct.getLocalVariableAttr();
+      if (attr != null) {
+        return attr.getMapVarNames().containsValue(name);
+      }
+    }
+
+    return false;
   }
 
   @Override
@@ -215,5 +222,4 @@ public class FieldExprent extends Exprent {
     
     return true;
   }
-  
 }

src/org/jetbrains/java/decompiler/modules/decompiler/stats/IfStatement.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2015 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -25,8 +25,7 @@ import org.jetbrains.java.decompiler.modules.decompiler.exps.IfExprent;
 import org.jetbrains.java.decompiler.struct.match.IMatchable;
 import org.jetbrains.java.decompiler.struct.match.MatchEngine;
 import org.jetbrains.java.decompiler.struct.match.MatchNode;
-import org.jetbrains.java.decompiler.struct.match.IMatchable.MatchProperties;
+import org.jetbrains.java.decompiler.util.TextUtil;
-import org.jetbrains.java.decompiler.util.InterpreterUtil;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -205,7 +204,7 @@ public class IfStatement extends Statement {
   }
 
   public TextBuffer toJava(int indent, BytecodeMappingTracer tracer) {
-    String indstr = InterpreterUtil.getIndentString(indent);
+    String indstr = TextUtil.getIndentString(indent);
     TextBuffer buf = new TextBuffer();
 
     buf.append(ExprProcessor.listToJava(varDefinitions, indent, tracer));

src/org/jetbrains/java/decompiler/struct/StructMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2014 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -17,6 +17,7 @@ package org.jetbrains.java.decompiler.struct;
 
 import org.jetbrains.java.decompiler.code.*;
 import org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute;
+import org.jetbrains.java.decompiler.struct.attr.StructLocalVariableTableAttribute;
 import org.jetbrains.java.decompiler.struct.consts.ConstantPool;
 import org.jetbrains.java.decompiler.util.DataInputFullStream;
 import org.jetbrains.java.decompiler.util.VBStyleCollection;
@@ -37,7 +38,6 @@ import static org.jetbrains.java.decompiler.code.CodeConstants.*;
   }
 */
 public class StructMethod extends StructMember {
-
   private static final int[] opr_iconst = {-1, 0, 1, 2, 3, 4, 5};
   private static final int[] opr_loadstore = {0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3};
   private static final int[] opcs_load = {opc_iload, opc_lload, opc_fload, opc_dload, opc_aload};
@@ -389,4 +389,8 @@ public class StructMethod extends StructMember {
   public InstructionSequence getInstructionSequence() {
     return seq;
   }
+
+  public StructLocalVariableTableAttribute getLocalVariableAttr() {
+    return (StructLocalVariableTableAttribute)getAttributes().getWithKey(StructGeneralAttribute.ATTRIBUTE_LOCAL_VARIABLE_TABLE);
+  }
 }

src/org/jetbrains/java/decompiler/util/InterpreterUtil.java

@@ -15,9 +15,6 @@
  */
 package org.jetbrains.java.decompiler.util;
 
-import org.jetbrains.java.decompiler.main.DecompilerContext;
-import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences;
-
 import java.io.*;
 import java.util.Collection;
 import java.util.HashSet;
@@ -79,16 +76,6 @@ public class InterpreterUtil {
     }
   }
 
-  public static String getIndentString(int length) {
-    if (length == 0) return "";
-    StringBuilder buf = new StringBuilder();
-    String indent = (String)DecompilerContext.getProperty(IFernflowerPreferences.INDENT_STRING);
-    while (length-- > 0) {
-      buf.append(indent);
-    }
-    return buf.toString();
-  }
-
   public static boolean equalSets(Collection<?> c1, Collection<?> c2) {
     if (c1 == null) {
       return c2 == null;
@@ -130,18 +117,6 @@ public class InterpreterUtil {
     return false;
   }
 
-  public static boolean isPrintableUnicode(char c) {
-    int t = Character.getType(c);
-    return t != Character.UNASSIGNED && t != Character.LINE_SEPARATOR && t != Character.PARAGRAPH_SEPARATOR &&
-           t != Character.CONTROL && t != Character.FORMAT && t != Character.PRIVATE_USE && t != Character.SURROGATE;
-  }
-
-  public static String charToUnicodeLiteral(int value) {
-    String sTemp = Integer.toHexString(value);
-    sTemp = ("0000" + sTemp).substring(sTemp.length());
-    return "\\u" + sTemp;
-  }
-
   public static String makeUniqueKey(String name, String descriptor) {
     return name + ' ' + descriptor;
   }

src/org/jetbrains/java/decompiler/util/StructUtils.java

@@ -1,59 +0,0 @@
-/*
- * Copyright 2000-2016 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.util;
-
-import org.jetbrains.java.decompiler.main.DecompilerContext;
-import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
-import org.jetbrains.java.decompiler.struct.StructMember;
-import org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute;
-import org.jetbrains.java.decompiler.struct.attr.StructLocalVariableTableAttribute;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-import static org.jetbrains.java.decompiler.main.DecompilerContext.CURRENT_METHOD_WRAPPER;
-import static org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute.ATTRIBUTE_LOCAL_VARIABLE_TABLE;
-
-/**
- * @author Alexandru-Constantin Bledea
- * @since March 07, 2016
- */
-public final class StructUtils {
-  private StructUtils() { }
-
-  /**
-   * @return the local variables of the current method
-   */
-  public static List<String> getCurrentMethodLocalVariableNames() {
-    final MethodWrapper method = (MethodWrapper) DecompilerContext.getProperty(CURRENT_METHOD_WRAPPER);
-    return method == null ? Collections.emptyList() : getLocalVariables(method.methodStruct);
-  }
-
-  /**
-   * @param structMember the struct member from which to extract the local variables
-   * @return the local variables of the struct member
-   */
-  public static List<String> getLocalVariables(final StructMember structMember) {
-    final VBStyleCollection<StructGeneralAttribute, String> methodStruct = structMember.getAttributes();
-    final StructGeneralAttribute generalAttribute = methodStruct.getWithKey(ATTRIBUTE_LOCAL_VARIABLE_TABLE);
-    if (generalAttribute instanceof StructLocalVariableTableAttribute) {
-      final StructLocalVariableTableAttribute table = (StructLocalVariableTableAttribute)generalAttribute;
-      return Collections.unmodifiableList(new ArrayList<>(table.getMapVarNames().values()));
-    }
-    return Collections.emptyList();
-  }
-}

src/org/jetbrains/java/decompiler/util/TextUtil.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2014 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -18,6 +18,7 @@ package org.jetbrains.java.decompiler.util;
 import org.jetbrains.java.decompiler.main.ClassesProcessor;
 import org.jetbrains.java.decompiler.main.DecompilerContext;
 import org.jetbrains.java.decompiler.main.TextBuffer;
+import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences;
 import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor;
 
 public class TextUtil {
@@ -28,4 +29,26 @@ public class TextUtil {
     }
     buf.append("super");
   }
+
+  public static String getIndentString(int length) {
+    if (length == 0) return "";
+    StringBuilder buf = new StringBuilder();
+    String indent = (String)DecompilerContext.getProperty(IFernflowerPreferences.INDENT_STRING);
+    while (length-- > 0) {
+      buf.append(indent);
+    }
+    return buf.toString();
+  }
+
+  public static boolean isPrintableUnicode(char c) {
+    int t = Character.getType(c);
+    return t != Character.UNASSIGNED && t != Character.LINE_SEPARATOR && t != Character.PARAGRAPH_SEPARATOR &&
+           t != Character.CONTROL && t != Character.FORMAT && t != Character.PRIVATE_USE && t != Character.SURROGATE;
+  }
+
+  public static String charToUnicodeLiteral(int value) {
+    String sTemp = Integer.toHexString(value);
+    sTemp = ("0000" + sTemp).substring(sTemp.length());
+    return "\\u" + sTemp;
+  }
 }