org.exolab.javasource.JSourceCode Maven / Gradle / Ivy
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/**
* Redistribution and use of this software and associated documentation ("Software"), with or
* without modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and notices. Redistributions
* must also contain a copy of this document.
*
* 2. 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.
*
* 3. The name "Exolab" must not be used to endorse or promote products derived from this Software
* without prior written permission of Intalio, Inc. For written permission, please contact
* [email protected].
*
* 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
* their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of
* Intalio, Inc.
*
* 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED 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 INTALIO, INC. OR ITS
* 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.
*
* Copyright 1999-2001 (C) Intalio, Inc. All Rights Reserved.
*/
package org.exolab.javasource;
import java.text.MessageFormat;
import java.util.StringTokenizer;
import java.util.Vector;
/**
* A class for holding in-memory Java source code.
*
* @author Keith Visco
* @version $Revision$ $Date: 2005-03-05 06:42:06 -0700 (Sat, 05 Mar 2005) $
*/
public final class JSourceCode {
// --------------------------------------------------------------------------
/** Default indentation size. */
public static final int DEFAULT_INDENT_SIZE = 4;
// --------------------------------------------------------------------------
/** A list of JCodeStatements. */
private final Vector _source = new Vector<>();
/** The indent size. */
private short _indentSize = DEFAULT_INDENT_SIZE;
/** The current indent size. */
private short _currentIndent = _indentSize;
// --------------------------------------------------------------------------
/**
* Creates an empty JSourceCode.
*/
public JSourceCode() {
super();
}
/**
* Creates a JSourceCode and adds the given String to its contents.
*
* @param sourceCode the source to add
*/
public JSourceCode(final String sourceCode) {
this();
_source.add(new JCodeStatement(sourceCode, _currentIndent));
}
// --------------------------------------------------------------------------
/**
* Adds statement generated by replacing parameters of given pattern with given argument to this
* JSourceCode. The statement will be added on a new line.
*
* @param pattern Pattern for the statement.
* @param argument Argument to replace first parameter in pattern.
*/
public void add(final String pattern, final Object argument) {
add(pattern, new Object[] {argument});
}
/**
* Adds statement generated by replacing parameters of given pattern with given arguments to this
* JSourceCode. The statement will be added on a new line.
*
* @param pattern Pattern for the statement.
* @param argument1 Argument to replace first parameter in pattern.
* @param argument2 Argument to replace second parameter in pattern.
*/
public void add(final String pattern, final Object argument1, final Object argument2) {
add(pattern, new Object[] {argument1, argument2});
}
/**
* Adds statements generated by replacing parameters of given pattern with given arguments to this
* JSourceCode. Multiple statements can be separated by '\n' characters. Each statement will be
* added on a new line. If that statement starts with whitespace characters it will be indented.
*
* @param pattern Pattern for the statement.
* @param arguments Arguments to replace parameters in pattern.
*/
public void add(final String pattern, final Object[] arguments) {
StringTokenizer tokenizer = new StringTokenizer(pattern, "\n");
while (tokenizer.hasMoreTokens()) {
addWithIndent(tokenizer.nextToken(), arguments);
}
}
/**
* Adds statement generated by replacing parameters of given pattern with given arguments to this
* JSourceCode. The statement will be added on a new line. If the statement starts with whitespace
* characters the statement will be indented.
*
* @param pattern Pattern for the statement.
* @param arguments Arguments to replace parameters in pattern.
*/
private void addWithIndent(final String pattern, final Object[] arguments) {
if (pattern.startsWith(" ")) {
indent();
addWithIndent(pattern.substring(1), arguments);
unindent();
} else if ((pattern.indexOf('{') + 2) == pattern.indexOf('}')) {
add(MessageFormat.format(pattern, arguments));
} else {
add(pattern);
}
}
/**
* Adds the given statement to this JSourceCode. The statement will be added on a new line.
*
* @param statement The statement to add.
*/
public void add(final String statement) {
_source.add(new JCodeStatement(statement, _currentIndent));
}
/**
* Adds the given statement to this JSourceCode. The statement will be added on a new line and
* added with increased indent. This is a convenience method for the sequence:
* indent();
* add(statement);
* unindent();
*
*
* @param statement The statement to add.
*/
public void addIndented(final String statement) {
indent();
_source.add(new JCodeStatement(statement, _currentIndent));
unindent();
}
/**
* Appends the given String to the last line in this JSourceCode.
*
* @param segment The String to append.
*/
public void append(final String segment) {
if (_source.isEmpty()) {
add(segment);
} else {
JCodeStatement jcs = _source.lastElement();
jcs.append(segment);
}
}
/**
* Clears all the code statements from this JSourceCode.
*/
public void clear() {
_source.removeAllElements();
}
/**
* Copies the contents of this JSourceCode into the given JSourceCode.
*
* @param jsc The JSourceCode to copy this JSourceCode into.
*/
public void copyInto(final JSourceCode jsc) {
for (JCodeStatement jcs : _source) {
jsc.addCodeStatement(jcs);
}
}
/**
* Increases the current indent level by 1.
*/
public void indent() {
_currentIndent += _indentSize;
}
/**
* Returns true if this JSourceCode is empty (ie. no source).
*
* @return True if this JSourceCode is empty.
*/
public boolean isEmpty() {
return _source.isEmpty();
}
/**
* Prints this JSourceCode to the given JSourceWriter.
*
* @param jsw The JSourceWriter to print to.
*/
public void print(final JSourceWriter jsw) {
for (JCodeStatement jcs : _source) {
jsw.writeln(jcs.toString());
}
}
/**
* Decreases the indent level by 1.
*/
public void unindent() {
_currentIndent -= _indentSize;
}
/**
* Returns the number of source code lines (aka JCodeStatements) set so far.
*
* @return The number of source code lines set so far.
*/
public int size() {
return _source.size();
}
/**
* Adds the given JCodeStatement to this JSourceCode.
*
* @param jcs The JCodeStatement to add.
*/
private void addCodeStatement(final JCodeStatement jcs) {
short indent = (short) (jcs.getIndent() + _currentIndent - DEFAULT_INDENT_SIZE);
_source.add(new JCodeStatement(jcs.getStatement(), indent));
}
/**
* Returns a vector of source lines.
*
* @return A vector of source lines.
*/
public Vector getSource() {
return _source;
}
// --------------------------------------------------------------------------
/**
* {@inheritDoc}
*/
public String toString() {
StringBuilder sb = new StringBuilder(100);
String lineSeparator = System.getProperty("line.separator");
for (JCodeStatement jcs : _source) {
sb.append(jcs).append(lineSeparator);
}
return sb.toString();
}
// --------------------------------------------------------------------------
}
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