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net.sf.jasperreports.engine.design.JRJdtCompiler Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see [email protected] )
* @version $Id: JRJdtCompiler.java 3420 2010-02-18 09:17:47Z teodord $
*/
public class JRJdtCompiler extends JRAbstractJavaCompiler
{
private static final String JDT_PROPERTIES_PREFIX = "org.eclipse.jdt.core.";
/**
*
*/
static final Log log = LogFactory.getLog(JRJdtCompiler.class);
private final ClassLoader classLoader;
Constructor constrNameEnvAnsBin;
Constructor constrNameEnvAnsCompUnit;
boolean is2ArgsConstr;
Constructor constrNameEnvAnsBin2Args;
Constructor constrNameEnvAnsCompUnit2Args;
public JRJdtCompiler ()
{
super(false);
classLoader = getClassLoader();
boolean success;
try //FIXME remove support for pre 3.1 jdt
{
Class classAccessRestriction = loadClass("org.eclipse.jdt.internal.compiler.env.AccessRestriction");
constrNameEnvAnsBin2Args = NameEnvironmentAnswer.class.getConstructor(new Class[]{IBinaryType.class, classAccessRestriction});
constrNameEnvAnsCompUnit2Args = NameEnvironmentAnswer.class.getConstructor(new Class[]{ICompilationUnit.class, classAccessRestriction});
is2ArgsConstr = true;
success = true;
}
catch (NoSuchMethodException e)
{
success = false;
}
catch (ClassNotFoundException ex)
{
success = false;
}
if (!success)
{
try
{
constrNameEnvAnsBin = NameEnvironmentAnswer.class.getConstructor(new Class[]{IBinaryType.class});
constrNameEnvAnsCompUnit = NameEnvironmentAnswer.class.getConstructor(new Class[]{ICompilationUnit.class});
is2ArgsConstr = false;
}
catch (NoSuchMethodException ex)
{
throw new JRRuntimeException("Not able to load JDT classes", ex);
}
}
}
class CompilationUnit implements ICompilationUnit
{
protected String srcCode;
protected String className;
public CompilationUnit(String srcCode, String className)
{
this.srcCode = srcCode;
this.className = className;
}
public char[] getFileName()
{
return className.toCharArray();
}
public char[] getContents()
{
return srcCode.toCharArray();
}
public char[] getMainTypeName()
{
return className.toCharArray();
}
public char[][] getPackageName()
{
return new char[0][0];
}
}
/**
*
*/
protected String compileUnits(final JRCompilationUnit[] units, String classpath, File tempDirFile)
{
final StringBuffer problemBuffer = new StringBuffer();
INameEnvironment env = getNameEnvironment(units);
final IErrorHandlingPolicy policy =
DefaultErrorHandlingPolicies.proceedWithAllProblems();
final Map settings = getJdtSettings();
final IProblemFactory problemFactory =
new DefaultProblemFactory(Locale.getDefault());
final ICompilerRequestor requestor = getCompilerRequestor(units, problemBuffer);
ICompilationUnit[] compilationUnits = new ICompilationUnit[units.length];
for (int i = 0; i < compilationUnits.length; i++)
{
compilationUnits[i] = new CompilationUnit(units[i].getSourceCode(), units[i].getName());
}
Compiler compiler =
new Compiler(env, policy, settings, requestor, problemFactory);
compiler.compile(compilationUnits);
if (problemBuffer.length() > 0)
{
return problemBuffer.toString();
}
return null;
}
protected INameEnvironment getNameEnvironment(final JRCompilationUnit[] units)
{
final INameEnvironment env = new INameEnvironment()
{
public NameEnvironmentAnswer findType(char[][] compoundTypeName)
{
StringBuffer result = new StringBuffer();
String sep = "";
for (int i = 0; i < compoundTypeName.length; i++) {
result.append(sep);
result.append(compoundTypeName[i]);
sep = ".";
}
return findType(result.toString());
}
public NameEnvironmentAnswer findType(char[] typeName, char[][] packageName)
{
StringBuffer result = new StringBuffer();
String sep = "";
for (int i = 0; i < packageName.length; i++) {
result.append(sep);
result.append(packageName[i]);
sep = ".";
}
result.append(sep);
result.append(typeName);
return findType(result.toString());
}
private int getClassIndex(String className)
{
int classIdx;
for (classIdx = 0; classIdx < units.length; ++classIdx)
{
if (className.equals(units[classIdx].getName()))
{
break;
}
}
if (classIdx >= units.length)
{
classIdx = -1;
}
return classIdx;
}
private NameEnvironmentAnswer findType(String className)
{
try
{
int classIdx = getClassIndex(className);
if (classIdx >= 0)
{
ICompilationUnit compilationUnit =
new CompilationUnit(
units[classIdx].getSourceCode(), className);
if (is2ArgsConstr)
{
return (NameEnvironmentAnswer) constrNameEnvAnsCompUnit2Args.newInstance(new Object[] { compilationUnit, null });
}
return (NameEnvironmentAnswer) constrNameEnvAnsCompUnit.newInstance(new Object[] { compilationUnit });
}
String resourceName = className.replace('.', '/') + ".class";
InputStream is = getResource(resourceName);
if (is != null)
{
try
{
byte[] classBytes = JRLoader.loadBytes(is);
char[] fileName = className.toCharArray();
ClassFileReader classFileReader =
new ClassFileReader(classBytes, fileName, true);
if (is2ArgsConstr)
{
return (NameEnvironmentAnswer) constrNameEnvAnsBin2Args.newInstance(new Object[] { classFileReader, null });
}
return (NameEnvironmentAnswer) constrNameEnvAnsBin.newInstance(new Object[] { classFileReader });
}
finally
{
try
{
is.close();
}
catch (IOException e)
{
// ignore
}
}
}
}
catch (JRException e)
{
log.error("Compilation error", e);
}
catch (org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException exc)
{
log.error("Compilation error", exc);
}
catch (InvocationTargetException e)
{
throw new JRRuntimeException("Not able to create NameEnvironmentAnswer", e);
}
catch (IllegalArgumentException e)
{
throw new JRRuntimeException("Not able to create NameEnvironmentAnswer", e);
}
catch (InstantiationException e)
{
throw new JRRuntimeException("Not able to create NameEnvironmentAnswer", e);
}
catch (IllegalAccessException e)
{
throw new JRRuntimeException("Not able to create NameEnvironmentAnswer", e);
}
return null;
}
private boolean isPackage(String result)
{
int classIdx = getClassIndex(result);
if (classIdx >= 0)
{
return false;
}
String resourceName = result.replace('.', '/') + ".class";
boolean isPackage = true;
InputStream is = getResource(resourceName);
if (is != null)// cannot just test for null; need to read from "is" to avoid bug
{ // with sun.plugin.cache.EmptyInputStream on JRE 1.5 plugin
try // http://sourceforge.net/tracker/index.php?func=detail&aid=1478460&group_id=36382&atid=416703
{
isPackage = (is.read() > 0);
}
catch(IOException e)
{
//ignore
}
finally
{
try
{
is.close();
}
catch(IOException e)
{
//ignore
}
}
}
return isPackage;
}
public boolean isPackage(char[][] parentPackageName, char[] packageName)
{
StringBuffer result = new StringBuffer();
String sep = "";
if (parentPackageName != null)
{
for (int i = 0; i < parentPackageName.length; i++)
{
result.append(sep);
result.append(parentPackageName[i]);
sep = ".";
}
}
if (Character.isUpperCase(packageName[0]))
{
if (!isPackage(result.toString()))
{
return false;
}
}
result.append(sep);
result.append(packageName);
return isPackage(result.toString());
}
public void cleanup()
{
}
};
return env;
}
protected ICompilerRequestor getCompilerRequestor(final JRCompilationUnit[] units, final StringBuffer problemBuffer)
{
final ICompilerRequestor requestor =
new ICompilerRequestor()
{
public void acceptResult(CompilationResult result)
{
String className = ((CompilationUnit) result.getCompilationUnit()).className;
int classIdx;
for (classIdx = 0; classIdx < units.length; ++classIdx)
{
if (className.equals(units[classIdx].getName()))
{
break;
}
}
if (result.hasErrors())
{
String sourceCode = units[classIdx].getSourceCode();
IProblem[] problems = getJavaCompilationErrors(result);
for (int i = 0; i < problems.length; i++)
{
IProblem problem = problems[i];
//if (problem.isError())
{
problemBuffer.append(i + 1);
problemBuffer.append(". ");
problemBuffer.append(problem.getMessage());
if (
problem.getSourceStart() >= 0
&& problem.getSourceEnd() >= 0
)
{
int problemStartIndex = sourceCode.lastIndexOf("\n", problem.getSourceStart()) + 1;
int problemEndIndex = sourceCode.indexOf("\n", problem.getSourceEnd());
if (problemEndIndex < 0)
{
problemEndIndex = sourceCode.length();
}
problemBuffer.append("\n");
problemBuffer.append(
sourceCode.substring(
problemStartIndex,
problemEndIndex
)
);
problemBuffer.append("\n");
for(int j = problemStartIndex; j < problem.getSourceStart(); j++)
{
problemBuffer.append(" ");
}
if (problem.getSourceStart() == problem.getSourceEnd())
{
problemBuffer.append("^");
}
else
{
problemBuffer.append("<");
for(int j = problem.getSourceStart() + 1; j < problem.getSourceEnd(); j++)
{
problemBuffer.append("-");
}
problemBuffer.append(">");
}
}
problemBuffer.append("\n");
}
}
problemBuffer.append(problems.length);
problemBuffer.append(" errors\n");
}
if (problemBuffer.length() == 0)
{
ClassFile[] resultClassFiles = result.getClassFiles();
for (int i = 0; i < resultClassFiles.length; i++)
{
units[classIdx].setCompileData(resultClassFiles[i].getBytes());
}
}
}
};
return requestor;
}
protected Map getJdtSettings()
{
final Map settings = new HashMap();
settings.put(CompilerOptions.OPTION_LineNumberAttribute, CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_SourceFileAttribute, CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_ReportDeprecation, CompilerOptions.IGNORE);
// if (ctxt.getOptions().getJavaEncoding() != null)
// {
// settings.put(CompilerOptions.OPTION_Encoding, ctxt.getOptions().getJavaEncoding());
// }
// if (ctxt.getOptions().getClassDebugInfo())
// {
// settings.put(CompilerOptions.OPTION_LocalVariableAttribute, CompilerOptions.GENERATE);
// }
List properties = JRProperties.getProperties(JDT_PROPERTIES_PREFIX);
for (Iterator it = properties.iterator(); it.hasNext();)
{
JRProperties.PropertySuffix property = (JRProperties.PropertySuffix) it.next();
String propVal = property.getValue();
if (propVal != null && propVal.length() > 0)
{
settings.put(property.getKey(), propVal);
}
}
Properties systemProps = System.getProperties();
for (Enumeration it = systemProps.propertyNames(); it.hasMoreElements();)
{
String propName = (String) it.nextElement();
if (propName.startsWith(JDT_PROPERTIES_PREFIX))
{
String propVal = systemProps.getProperty(propName);
if (propVal != null && propVal.length() > 0)
{
settings.put(propName, propVal);
}
}
}
return settings;
}
/**
*
*/
private ClassLoader getClassLoader()
{
ClassLoader clsLoader = Thread.currentThread().getContextClassLoader();
if (clsLoader != null)
{
try
{
Class.forName(JRJdtCompiler.class.getName(), true, clsLoader);
}
catch (ClassNotFoundException e)
{
clsLoader = null;
//if (log.isWarnEnabled())
// log.warn("Failure using Thread.currentThread().getContextClassLoader() in JRJdtCompiler class. Using JRJdtCompiler.class.getClassLoader() instead.");
}
}
if (clsLoader == null)
{
clsLoader = JRClassLoader.class.getClassLoader();
}
return clsLoader;
}
protected InputStream getResource (String resourceName)
{
if (classLoader == null)
{
return JRJdtCompiler.class.getResourceAsStream("/" + resourceName);
}
return classLoader.getResourceAsStream(resourceName);
}
protected Class loadClass (String className) throws ClassNotFoundException
{
if (classLoader == null)
{
return Class.forName(className);
}
return classLoader.loadClass(className);
}
protected void checkLanguage(String language) throws JRException
{
if (!JRReport.LANGUAGE_JAVA.equals(language))
{
throw
new JRException(
"Language \"" + language
+ "\" not supported by this report compiler.\n"
+ "Expecting \"java\" instead."
);
}
}
protected JRCompilationSourceCode generateSourceCode(JRSourceCompileTask sourceTask) throws JRException
{
return JRClassGenerator.generateClass(sourceTask);
}
protected String getSourceFileName(String unitName)
{
return unitName + ".java";
}
protected String getCompilerClass()
{
return JRJavacCompiler.class.getName();
}
protected IProblem[] getJavaCompilationErrors(CompilationResult result) {
try {
Method getErrorsMethod = result.getClass().getMethod("getErrors", (Class[])null);
return (IProblem[]) getErrorsMethod.invoke(result, (Object[])null);
} catch (SecurityException e) {
throw new JRRuntimeException("Error resolving JDT methods", e);
} catch (NoSuchMethodException e) {
throw new JRRuntimeException("Error resolving JDT methods", e);
} catch (IllegalArgumentException e) {
throw new JRRuntimeException("Error invoking JDT methods", e);
} catch (IllegalAccessException e) {
throw new JRRuntimeException("Error invoking JDT methods", e);
} catch (InvocationTargetException e) {
throw new JRRuntimeException("Error invoking JDT methods", e);
}
}
}
