org.jibx.ws.wsdl.tools.SignatureParser Maven / Gradle / Ivy
/*
* Copyright (c) 2007, Dennis M. Sosnoski All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following
* disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of
* JiBX nor the names of its contributors may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jibx.ws.wsdl.tools;
/**
* Pull parser for generic method or field signature.
*
* @author Dennis M. Sosnoski
*/
public class SignatureParser
{
//
// Signature events
public static final int END_EVENT = 0;
public static final int TYPE_EVENT = 1;
public static final int METHOD_PARAMETERS_START_EVENT = 2;
public static final int METHOD_PARAMETERS_END_EVENT = 3;
public static final int TYPE_PARAMETERS_START_EVENT = 4;
public static final int TYPE_PARAMETERS_END_EVENT = 5;
//
// Common types
private static final String STRING_SIGNATURE = "java/lang/String;";
private static final String STRING_TYPE = "java.lang.String";
private static final String OBJECT_SIGNATURE = "java/lang/Object;";
private static final String OBJECT_TYPE = "java.lang.Object";
//
// Instance data
private final String m_signature;
private int m_offset;
private int m_event;
private boolean m_isPrimitive;
private boolean m_isParameterized;
private String m_type;
/**
* Constructor.
*
* @param sig signature attribute value
*/
public SignatureParser(String sig) {
if (sig.startsWith("Signature(") && sig.endsWith(")")) {
m_signature = sig.substring(10, sig.length() - 1);
m_event = -1;
} else if (sig.startsWith("Signature: (") && sig.indexOf(")") != -1) { // jdk 1.6+ dcorley
if (sig.indexOf(")") == sig.length())
m_signature = sig.substring(12, sig.length() - 1);
else
m_signature = sig.substring(11, sig.length());
m_event = -1;
} else {
throw new IllegalArgumentException("Internal error: not a valid Signature");
}
}
/**
* Check if type is parameterized. It is an error to call this if the current event is not {@link #TYPE_EVENT}.
*
* @return true if parameterized type
*/
public boolean isParameterized() {
if (m_event == TYPE_EVENT) {
return m_isParameterized;
} else {
throw new IllegalStateException("Internal error: not at TYPE_EVENT");
}
}
/**
* Check if type is a primitive. It is an error to call this if the current event is not {@link #TYPE_EVENT}.
*
* @return true if primitive type
*/
public boolean isPrimitive() {
if (m_event == TYPE_EVENT) {
return m_isPrimitive;
} else {
throw new IllegalStateException("Internal error: not at TYPE_EVENT");
}
}
/**
* Get current event.
*
* @return event
*/
public int getEvent() {
return m_event;
}
/**
* Get type. It is an error to call this if the current event is not {@link #TYPE_EVENT}.
*
* @return type
*/
public String getType() {
if (m_event == TYPE_EVENT) {
return m_type;
} else {
throw new IllegalStateException("Internal error: not at TYPE_EVENT");
}
}
/**
* Get next parse event.
*
* @return event
*/
public int next() {
if (m_event == END_EVENT) {
throw new IllegalStateException("Internal error: cannot advance parser");
} else if (m_offset >= m_signature.length()) {
m_event = END_EVENT;
} else {
// assume next event is a primitive type, then correct if necessary
m_event = TYPE_EVENT;
m_isPrimitive = true;
m_isParameterized = false;
char chr = m_signature.charAt(m_offset++);
switch (chr) {
// blocking start/end characters
case '(':
m_event = METHOD_PARAMETERS_START_EVENT;
break;
case ')':
m_event = METHOD_PARAMETERS_END_EVENT;
break;
case '<':
m_event = TYPE_PARAMETERS_START_EVENT;
break;
case '>':
m_event = TYPE_PARAMETERS_END_EVENT;
if (m_offset < m_signature.length() && m_signature.charAt(m_offset) == ';') {
m_offset++;
}
break;
// primitive type indication characters
case 'B':
m_type = "byte";
break;
case 'C':
m_type = "char";
break;
case 'D':
m_type = "double";
break;
case 'F':
m_type = "float";
break;
case 'I':
m_type = "int";
break;
case 'J':
m_type = "long";
break;
case 'S':
m_type = "short";
break;
case 'V':
m_type = "void";
break;
case 'Z':
m_type = "boolean";
break;
// object type
case 'L': {
m_isPrimitive = false;
if (m_signature.startsWith(STRING_SIGNATURE, m_offset)) {
m_offset += STRING_SIGNATURE.length();
m_type = STRING_TYPE;
} else if (m_signature.startsWith(OBJECT_SIGNATURE, m_offset)) {
m_offset += OBJECT_SIGNATURE.length();
m_type = OBJECT_TYPE;
} else {
StringBuffer buff = new StringBuffer();
boolean done = false;
while (m_offset < m_signature.length()) {
chr = m_signature.charAt(m_offset++);
if (chr == '/') {
buff.append('.');
} else if (chr == ';') {
done = true;
break;
} else if (chr == '<') {
done = true;
m_offset--;
m_isParameterized = true;
break;
} else {
buff.append(chr);
}
}
if (!done) {
throw new IllegalStateException("Internal error: cannot interpret type");
} else {
m_type = buff.toString();
}
}
break;
}
// error if anything else
default:
throw new IllegalStateException("Internal error: signature parse state");
}
}
return m_event;
}
}