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src/java.xml/share/classes/com/sun/org/apache/bcel/internal/classfile/Signature.java
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@@ -19,245 +19,256 @@
* limitations under the License.
*/
package com.sun.org.apache.bcel.internal.classfile;
+import java.io.ByteArrayInputStream;
+import java.io.DataInput;
+import java.io.DataOutputStream;
+import java.io.IOException;
-import com.sun.org.apache.bcel.internal.Constants;
-import java.io.*;
+import com.sun.org.apache.bcel.internal.Const;
/**
* This class is derived from <em>Attribute</em> and represents a reference
- * to a <href="http://wwwipd.ira.uka.de/~pizza/gj/">GJ</a> attribute.
+ * to a GJ attribute.
*
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
+ * @version $Id: Signature.java 1749603 2016-06-21 20:50:19Z ggregory $
* @see Attribute
*/
public final class Signature extends Attribute {
+
private int signature_index;
+
/**
* Initialize from another object. Note that both objects use the same
* references (shallow copy). Use clone() for a physical copy.
*/
- public Signature(Signature c) {
+ public Signature(final Signature c) {
this(c.getNameIndex(), c.getLength(), c.getSignatureIndex(), c.getConstantPool());
}
+
/**
* Construct object from file stream.
* @param name_index Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
- * @param file Input stream
+ * @param input Input stream
* @param constant_pool Array of constants
* @throws IOException
*/
- Signature(int name_index, int length, DataInputStream file,
- ConstantPool constant_pool) throws IOException
- {
- this(name_index, length, file.readUnsignedShort(), constant_pool);
+ Signature(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool)
+ throws IOException {
+ this(name_index, length, input.readUnsignedShort(), constant_pool);
}
+
/**
* @param name_index Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
+ * @param signature_index Index in constant pool to CONSTANT_Utf8
* @param constant_pool Array of constants
- * @param Signature_index Index in constant pool to CONSTANT_Utf8
*/
- public Signature(int name_index, int length, int signature_index,
- ConstantPool constant_pool)
- {
- super(Constants.ATTR_SIGNATURE, name_index, length, constant_pool);
+ public Signature(final int name_index, final int length, final int signature_index, final ConstantPool constant_pool) {
+ super(Const.ATTR_SIGNATURE, name_index, length, constant_pool);
this.signature_index = signature_index;
}
+
/**
* Called by objects that are traversing the nodes of the tree implicitely
* defined by the contents of a Java class. I.e., the hierarchy of methods,
* fields, attributes, etc. spawns a tree of objects.
*
* @param v Visitor object
*/
- public void accept(Visitor v) {
- System.err.println("Visiting non-standard Signature object");
+ @Override
+ public void accept( final Visitor v ) {
+ //System.err.println("Visiting non-standard Signature object");
v.visitSignature(this);
}
+
/**
* Dump source file attribute to file stream in binary format.
*
* @param file Output file stream
* @throws IOException
*/
- public final void dump(DataOutputStream file) throws IOException
- {
+ @Override
+ public final void dump( final DataOutputStream file ) throws IOException {
super.dump(file);
file.writeShort(signature_index);
}
+
/**
* @return Index in constant pool of source file name.
*/
- public final int getSignatureIndex() { return signature_index; }
+ public final int getSignatureIndex() {
+ return signature_index;
+ }
+
/**
- * @param Signature_index.
+ * @param signature_index the index info the constant pool of this signature
*/
- public final void setSignatureIndex(int signature_index) {
+ public final void setSignatureIndex( final int signature_index ) {
this.signature_index = signature_index;
}
+
/**
* @return GJ signature.
*/
public final String getSignature() {
- ConstantUtf8 c = (ConstantUtf8)constant_pool.getConstant(signature_index,
- Constants.CONSTANT_Utf8);
+ final ConstantUtf8 c = (ConstantUtf8) super.getConstantPool().getConstant(signature_index,
+ Const.CONSTANT_Utf8);
return c.getBytes();
}
/**
* Extends ByteArrayInputStream to make 'unreading' chars possible.
*/
private static final class MyByteArrayInputStream extends ByteArrayInputStream {
- MyByteArrayInputStream(String data) { super(data.getBytes()); }
- final int mark() { return pos; }
- final String getData() { return new String(buf); }
- final void reset(int p) { pos = p; }
- final void unread() { if(pos > 0) pos--; }
- }
- private static boolean identStart(int ch) {
- return ch == 'T' || ch == 'L';
+ MyByteArrayInputStream(final String data) {
+ super(data.getBytes());
}
- private static boolean identPart(int ch) {
- return ch == '/' || ch == ';';
+
+ final String getData() {
+ return new String(buf);
}
- private static final void matchIdent(MyByteArrayInputStream in, StringBuffer buf) {
- int ch;
- if((ch = in.read()) == -1)
- throw new RuntimeException("Illegal signature: " + in.getData() +
- " no ident, reaching EOF");
+ final void unread() {
+ if (pos > 0) {
+ pos--;
+ }
+ }
+ }
- //System.out.println("return from ident:" + (char)ch);
- if(!identStart(ch)) {
- StringBuffer buf2 = new StringBuffer();
+ private static boolean identStart( final int ch ) {
+ return ch == 'T' || ch == 'L';
+ }
+
+ private static void matchIdent( final MyByteArrayInputStream in, final StringBuilder buf ) {
+ int ch;
+ if ((ch = in.read()) == -1) {
+ throw new RuntimeException("Illegal signature: " + in.getData()
+ + " no ident, reaching EOF");
+ }
+ //System.out.println("return from ident:" + (char)ch);
+ if (!identStart(ch)) {
+ final StringBuilder buf2 = new StringBuilder();
int count = 1;
- while(Character.isJavaIdentifierPart((char)ch)) {
- buf2.append((char)ch);
+ while (Character.isJavaIdentifierPart((char) ch)) {
+ buf2.append((char) ch);
count++;
ch = in.read();
}
-
- if(ch == ':') { // Ok, formal parameter
+ if (ch == ':') { // Ok, formal parameter
in.skip("Ljava/lang/Object".length());
buf.append(buf2);
-
ch = in.read();
in.unread();
//System.out.println("so far:" + buf2 + ":next:" +(char)ch);
} else {
- for(int i=0; i < count; i++)
+ for (int i = 0; i < count; i++) {
in.unread();
}
-
+ }
return;
}
-
- StringBuffer buf2 = new StringBuffer();
+ final StringBuilder buf2 = new StringBuilder();
ch = in.read();
-
do {
- buf2.append((char)ch);
+ buf2.append((char) ch);
ch = in.read();
//System.out.println("within ident:"+ (char)ch);
-
- } while((ch != -1) && (Character.isJavaIdentifierPart((char)ch) || (ch == '/')));
-
+ } while ((ch != -1) && (Character.isJavaIdentifierPart((char) ch) || (ch == '/')));
buf.append(buf2.toString().replace('/', '.'));
-
//System.out.println("regular return ident:"+ (char)ch + ":" + buf2);
-
- if(ch != -1)
+ if (ch != -1) {
in.unread();
}
+ }
- private static final void matchGJIdent(MyByteArrayInputStream in,
- StringBuffer buf)
- {
- int ch;
+ private static void matchGJIdent( final MyByteArrayInputStream in, final StringBuilder buf ) {
+ int ch;
matchIdent(in, buf);
-
ch = in.read();
- if((ch == '<') || ch == '(') { // Parameterized or method
+ if ((ch == '<') || ch == '(') { // Parameterized or method
//System.out.println("Enter <");
- buf.append((char)ch);
+ buf.append((char) ch);
matchGJIdent(in, buf);
-
- while(((ch = in.read()) != '>') && (ch != ')')) { // List of parameters
- if(ch == -1)
- throw new RuntimeException("Illegal signature: " + in.getData() +
- " reaching EOF");
-
+ while (((ch = in.read()) != '>') && (ch != ')')) { // List of parameters
+ if (ch == -1) {
+ throw new RuntimeException("Illegal signature: " + in.getData()
+ + " reaching EOF");
+ }
//System.out.println("Still no >");
buf.append(", ");
in.unread();
matchGJIdent(in, buf); // Recursive call
}
-
//System.out.println("Exit >");
-
- buf.append((char)ch);
- } else
+ buf.append((char) ch);
+ } else {
in.unread();
-
+ }
ch = in.read();
- if(identStart(ch)) {
+ if (identStart(ch)) {
in.unread();
matchGJIdent(in, buf);
- } else if(ch == ')') {
+ } else if (ch == ')') {
in.unread();
return;
- } else if(ch != ';')
- throw new RuntimeException("Illegal signature: " + in.getData() + " read " +
- (char)ch);
+ } else if (ch != ';') {
+ throw new RuntimeException("Illegal signature: " + in.getData() + " read " + (char) ch);
+ }
}
- public static String translate(String s) {
- //System.out.println("Sig:" + s);
- StringBuffer buf = new StringBuffer();
+ public static String translate( final String s ) {
+ //System.out.println("Sig:" + s);
+ final StringBuilder buf = new StringBuilder();
matchGJIdent(new MyByteArrayInputStream(s), buf);
-
return buf.toString();
}
- public static final boolean isFormalParameterList(String s) {
+
+ // @since 6.0 is no longer final
+ public static boolean isFormalParameterList( final String s ) {
return s.startsWith("<") && (s.indexOf(':') > 0);
}
- public static final boolean isActualParameterList(String s) {
+
+ // @since 6.0 is no longer final
+ public static boolean isActualParameterList( final String s ) {
return s.startsWith("L") && s.endsWith(">;");
}
+
/**
* @return String representation
*/
+ @Override
public final String toString() {
- String s = getSignature();
-
- return "Signature(" + s + ")";
+ final String s = getSignature();
+ return "Signature: " + s;
}
+
/**
* @return deep copy of this attribute
*/
- public Attribute copy(ConstantPool constant_pool) {
- return (Signature)clone();
+ @Override
+ public Attribute copy( final ConstantPool _constant_pool ) {
+ return (Attribute) clone();
}
}
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