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*/
package com.sun.org.apache.bcel.internal.util;
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import com.sun.org.apache.bcel.internal.classfile.*;
import java.io.*;
/**
* Convert constant pool into HTML file.
*
* @author M. Dahm
*
*/
final class ConstantHTML implements com.sun.org.apache.bcel.internal.Constants {
private String class_name; // name of current class
private String class_package; // name of package
private ConstantPool constant_pool; // reference to constant pool
private PrintWriter file; // file to write to
private String[] constant_ref; // String to return for cp[i]
private Constant[] constants; // The constants in the cp
private Method[] methods;
ConstantHTML(String dir, String class_name, String class_package, Method[] methods,
ConstantPool constant_pool) throws IOException
{
this.class_name = class_name;
this.class_package = class_package;
this.constant_pool = constant_pool;
this.methods = methods;
constants = constant_pool.getConstantPool();
file = new PrintWriter(new FileOutputStream(dir + class_name + "_cp.html"));
constant_ref = new String[constants.length];
constant_ref[0] = "<unknown>";
file.println("");
// Loop through constants, constants[0] is reserved
for(int i=1; i < constants.length; i++) {
if(i % 2 == 0)
file.print("| ");
else
file.print(" |
| ");
if(constants[i] != null)
writeConstant(i);
file.print(" |
\n");
}
file.println("
");
file.close();
}
String referenceConstant(int index) {
return constant_ref[index];
}
private void writeConstant(int index) {
byte tag = constants[index].getTag();
int class_index, name_index;
String ref;
// The header is always the same
file.println(" " + index + " " + CONSTANT_NAMES[tag] + "
");
/* For every constant type get the needed parameters and print them appropiately
*/
switch(tag) {
case CONSTANT_InterfaceMethodref:
case CONSTANT_Methodref:
// Get class_index and name_and_type_index, depending on type
if(tag == CONSTANT_Methodref) {
ConstantMethodref c = (ConstantMethodref)constant_pool.getConstant(index, CONSTANT_Methodref);
class_index = c.getClassIndex();
name_index = c.getNameAndTypeIndex();
}
else {
ConstantInterfaceMethodref c1 = (ConstantInterfaceMethodref)constant_pool.getConstant(index, CONSTANT_InterfaceMethodref);
class_index = c1.getClassIndex();
name_index = c1.getNameAndTypeIndex();
}
// Get method name and its class
String method_name = constant_pool.constantToString(name_index, CONSTANT_NameAndType);
String html_method_name = Class2HTML.toHTML(method_name);
// Partially compacted class name, i.e., / -> .
String method_class = constant_pool.constantToString(class_index, CONSTANT_Class);
String short_method_class = Utility.compactClassName(method_class); // I.e., remove java.lang.
short_method_class = Utility.compactClassName(method_class); // I.e., remove java.lang.
short_method_class = Utility.compactClassName(short_method_class, class_package + ".", true); // Remove class package prefix
// Get method signature
ConstantNameAndType c2 = (ConstantNameAndType)constant_pool.getConstant(name_index, CONSTANT_NameAndType);
String signature = constant_pool.constantToString(c2.getSignatureIndex(), CONSTANT_Utf8);
// Get array of strings containing the argument types
String[] args = Utility.methodSignatureArgumentTypes(signature, false);
// Get return type string
String type = Utility.methodSignatureReturnType(signature, false);
String ret_type = Class2HTML.referenceType(type);
StringBuffer buf = new StringBuffer("(");
for(int i=0; i < args.length; i++) {
buf.append(Class2HTML.referenceType(args[i]));
if(i < args.length - 1)
buf.append(", ");
}
buf.append(")");
String arg_types = buf.toString();
if(method_class.equals(class_name)) // Method is local to class
ref = "" + html_method_name + "";
else
ref = "" + short_method_class +
"." + html_method_name;
constant_ref[index] = ret_type + " " +
short_method_class + "." + html_method_name + " " + arg_types;
file.println("" + ret_type + " " + ref + arg_types + " \n
");
break;
case CONSTANT_Fieldref:
// Get class_index and name_and_type_index
ConstantFieldref c3 = (ConstantFieldref)constant_pool.getConstant(index, CONSTANT_Fieldref);
class_index = c3.getClassIndex();
name_index = c3.getNameAndTypeIndex();
// Get method name and its class (compacted)
String field_class = constant_pool.constantToString(class_index, CONSTANT_Class);
String short_field_class = Utility.compactClassName(field_class); // I.e., remove java.lang.
short_field_class = Utility.compactClassName(short_field_class, class_package + ".", true); // Remove class package prefix
String field_name = constant_pool.constantToString(name_index, CONSTANT_NameAndType);
if(field_class.equals(class_name)) // Field is local to class
ref = "" + field_name + "";
else
ref = "" +
short_field_class + "." + field_name + "\n";
constant_ref[index] = "" +
short_field_class + "." + field_name + "";
file.println("" + ref + "
\n" + "
");
break;
case CONSTANT_Class:
ConstantClass c4 = (ConstantClass)constant_pool.getConstant(index, CONSTANT_Class);
name_index = c4.getNameIndex();
String class_name2 = constant_pool.constantToString(index, tag); // / -> .
String short_class_name = Utility.compactClassName(class_name2); // I.e., remove java.lang.
short_class_name = Utility.compactClassName(short_class_name, class_package + ".", true); // Remove class package prefix
ref = "" + short_class_name + "";
constant_ref[index] = "" + short_class_name + "";
file.println("" + ref + "
\n");
break;
case CONSTANT_String:
ConstantString c5 = (ConstantString)constant_pool.getConstant(index, CONSTANT_String);
name_index = c5.getStringIndex();
String str = Class2HTML.toHTML(constant_pool.constantToString(index, tag));
file.println("" + str + "
\n");
break;
case CONSTANT_NameAndType:
ConstantNameAndType c6 = (ConstantNameAndType)constant_pool.getConstant(index, CONSTANT_NameAndType);
name_index = c6.getNameIndex();
int signature_index = c6.getSignatureIndex();
file.println("" + Class2HTML.toHTML(constant_pool.constantToString(index, tag)) + "
\n");
break;
default:
file.println("" + Class2HTML.toHTML(constant_pool.constantToString(index, tag)) + "\n");
} // switch
}
private final int getMethodNumber(String str) {
for(int i=0; i < methods.length; i++) {
String cmp = methods[i].getName() + methods[i].getSignature();
if(cmp.equals(str))
return i;
}
return -1;
}
}