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Detect static final fields that are set in the static initializer

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This commit is contained in:
Ben Gruver 2012-11-09 23:09:23 -08:00
parent 987cdc3e0e
commit 60631f684f
2 changed files with 25 additions and 11 deletions
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27
baksmali/src/main/java/org/jf/baksmali/Adaptors/ClassDefinition.java
View File

@ -30,30 +30,34 @@ package org.jf.baksmali.Adaptors;
import org.jf.dexlib2.AccessFlags;
import org.jf.dexlib2.iface.*;
import org.jf.dexlib2.iface.instruction.Instruction;
import org.jf.dexlib2.iface.instruction.formats.Instruction21c;
import org.jf.dexlib2.iface.reference.FieldReference;
import org.jf.dexlib2.util.ReferenceUtil;
import org.jf.util.StringUtils;
import org.jf.util.IndentingWriter;
import javax.annotation.Nonnull;
import java.io.IOException;
import java.util.HashSet;
import java.util.List;
public class ClassDefinition {
@Nonnull public final ClassDef classDef;
//@Nonnull private final HashSet<String> fieldsSetInStaticConstructor;
@Nonnull private final HashSet<String> fieldsSetInStaticConstructor;
protected boolean validationErrors;
public ClassDefinition(ClassDef classDef) {
this.classDef = classDef;
//fieldsSetInStaticConstructor = findFieldsSetInStaticConstructor();
fieldsSetInStaticConstructor = findFieldsSetInStaticConstructor();
}
public boolean hadValidationErrors() {
return validationErrors;
}
//TODO: uncomment
/*@Nonnull
@Nonnull
private HashSet<String> findFieldsSetInStaticConstructor() {
HashSet<String> fieldsSetInStaticConstructor = new HashSet<String>();
@ -71,9 +75,9 @@ public class ClassDefinition {
case SPUT_SHORT:
case SPUT_WIDE: {
Instruction21c ins = (Instruction21c)instruction;
String field = ins.getReference();
if (field.startsWith(classDef.getName())) {
fieldsSetInStaticConstructor.add(field);
FieldReference fieldRef = (FieldReference)ins.getReference();
if (fieldRef.getContainingClass().equals((classDef.getType()))) {
fieldsSetInStaticConstructor.add(ReferenceUtil.getShortFieldDescriptor(fieldRef));
}
break;
}
@ -83,7 +87,7 @@ public class ClassDefinition {
}
}
return fieldsSetInStaticConstructor;
}*/
}
public void writeTo(IndentingWriter writer) throws IOException {
writeClass(writer);
@ -162,9 +166,11 @@ public class ClassDefinition {
}
writer.write('\n');
// TODO: detect duplicate fields.
// TODO: check if field is set in static constructor
FieldDefinition.writeTo(writer, field, false);
boolean setInStaticConstructor =
fieldsSetInStaticConstructor.contains(ReferenceUtil.getShortFieldDescriptor(field));
FieldDefinition.writeTo(writer, field, setInStaticConstructor);
}
}
}
@ -180,7 +186,6 @@ public class ClassDefinition {
}
writer.write('\n');
// TODO: detect duplicate fields.
// TODO: check if field is set in static constructor
FieldDefinition.writeTo(writer, field, false);
}

9
dexlib2/src/main/java/org/jf/dexlib2/util/ReferenceUtil.java
View File

@ -77,6 +77,15 @@ public abstract class ReferenceUtil {
return sb.toString();
}
public static String getShortFieldDescriptor(FieldReference fieldReference) {
// TODO: try using a thread local StringBuilder
StringBuilder sb = new StringBuilder();
sb.append(fieldReference.getName());
sb.append(':');
sb.append(fieldReference.getType());
return sb.toString();
}
public static void writeFieldDescriptor(Writer writer, FieldReference fieldReference) throws IOException {
writer.write(fieldReference.getContainingClass());
writer.write("->");