in drools-ecj/src/main/java/org/drools/ecj/EclipseJavaCompiler.java [163:396]
public CompilationResult compile(
final String[] pSourceFiles,
final ResourceReader pReader,
final ResourceStore pStore,
final ClassLoader pClassLoader,
final JavaCompilerSettings pSettings
) {
final Collection problems = new ArrayList();
final ICompilationUnit[] compilationUnits = new ICompilationUnit[pSourceFiles.length];
for (int i = 0; i < compilationUnits.length; i++) {
final PortablePath sourceFile = PortablePath.of(pSourceFiles[i]);
if (pReader.isAvailable(sourceFile)) {
compilationUnits[i] = new CompilationUnit(pReader, sourceFile.asString());
} else {
// log.error("source not found " + sourceFile);
final CompilationProblem problem = new CompilationProblem() {
public int getEndColumn() {
return 0;
}
public int getEndLine() {
return 0;
}
public String getFileName() {
return sourceFile.asString();
}
public String getMessage() {
return "Source " + sourceFile.asString() + " could not be found";
}
public int getStartColumn() {
return 0;
}
public int getStartLine() {
return 0;
}
public boolean isError() {
return true;
}
public String toString() {
return getMessage();
}
};
problems.add(problem);
}
}
if (problems.size() > 0) {
final CompilationProblem[] result = new CompilationProblem[problems.size()];
problems.toArray(result);
return new CompilationResult(result);
}
final IErrorHandlingPolicy policy = DefaultErrorHandlingPolicies.proceedWithAllProblems();
final IProblemFactory problemFactory = new DefaultProblemFactory(Locale.getDefault());
final INameEnvironment nameEnvironment = new INameEnvironment() {
public NameEnvironmentAnswer findType( final char[][] pCompoundTypeName ) {
final StringBuilder result = new StringBuilder();
for (int i = 0; i < pCompoundTypeName.length; i++) {
if (i != 0) {
result.append('.');
}
result.append(pCompoundTypeName[i]);
}
return findType(result.toString());
}
public NameEnvironmentAnswer findType( final char[] pTypeName, final char[][] pPackageName ) {
final StringBuilder result = new StringBuilder();
for (char[] chars : pPackageName) {
result.append(chars);
result.append('.');
}
result.append(pTypeName);
return findType(result.toString());
}
private NameEnvironmentAnswer findType( final String pClazzName ) {
final String resourceName = ClassUtils.convertClassToResourcePath( pClazzName);
final byte[] clazzBytes = pStore.read( resourceName );
if (clazzBytes != null) {
try {
return createNameEnvironmentAnswer(pClazzName, clazzBytes);
} catch (final ClassFormatException e) {
throw new RuntimeException( "ClassFormatException in loading class '" + pClazzName + "' with JCI." );
}
}
try (InputStream is = pClassLoader.getResourceAsStream(resourceName)) {
if (is == null) {
return null;
}
if ( ClassUtils.isCaseSenstiveOS() ) {
// check it really is a class, this issue is due to windows case sensitivity issues for the class org.kie.Process and path org/droosl/process
try {
pClassLoader.loadClass( pClazzName );
} catch ( ClassNotFoundException | NoClassDefFoundError e ) {
return null;
}
}
final byte[] buffer = new byte[8192];
try (ByteArrayOutputStream baos = new ByteArrayOutputStream(buffer.length)) {
int count;
while ((count = is.read(buffer, 0, buffer.length)) > 0) {
baos.write(buffer, 0, count);
}
baos.flush();
return createNameEnvironmentAnswer(pClazzName, baos.toByteArray());
}
} catch ( final IOException e ) {
throw new RuntimeException( "could not read class",
e );
} catch ( final ClassFormatException e ) {
throw new RuntimeException( "wrong class format",
e );
}
}
private NameEnvironmentAnswer createNameEnvironmentAnswer(final String pClazzName, final byte[] clazzBytes) throws ClassFormatException {
final char[] fileName = pClazzName.toCharArray();
final ClassFileReader classFileReader = new ClassFileReader(clazzBytes, fileName, true);
return new NameEnvironmentAnswer(classFileReader, null);
}
private boolean isSourceAvailable(final String pClazzName, final ResourceReader pReader) {
// FIXME: this should not be tied to the extension
final String javaSource = pClazzName.replace('.', '/') + ".java";
final String classSource = pClazzName.replace('.', '/') + ".class";
return pReader.isAvailable( sourceFolder + javaSource ) || pReader.isAvailable( sourceFolder + classSource );
}
private boolean isPackage( final String pClazzName ) {
try (InputStream is = pClassLoader.getResourceAsStream(ClassUtils.convertClassToResourcePath(pClazzName))) {
if (is != null) {
if (ClassUtils.isWindows() || ClassUtils.isOSX()) {
// check it really is a class, this issue is due to windows case sensitivity issues for the class org.kie.Process and path org/droosl/process
try {
Class cls = pClassLoader.loadClass(pClazzName);
if (cls != null) {
return false;
}
} catch (ClassNotFoundException | NoClassDefFoundError e) {
return true;
}
}
}
return is == null && !isSourceAvailable(pClazzName, pReader);
} catch (IOException e) {
throw new RuntimeException("Cannot open or close resource stream!", e);
}
}
public boolean isPackage( char[][] parentPackageName, char[] pPackageName ) {
final StringBuilder result = new StringBuilder();
if (parentPackageName != null) {
for (int i = 0; i < parentPackageName.length; i++) {
if (i != 0) {
result.append('.');
}
result.append(parentPackageName[i]);
}
}
if (parentPackageName != null && parentPackageName.length > 0) {
result.append('.');
}
result.append(pPackageName);
return isPackage(result.toString());
}
public void cleanup() {
}
};
final ICompilerRequestor compilerRequestor = pResult -> {
if (pResult.hasProblems()) {
final IProblem[] iproblems = pResult.getProblems();
for (final IProblem iproblem : iproblems) {
final CompilationProblem problem = new EclipseCompilationProblem(iproblem);
problems.add(problem);
}
}
if (!pResult.hasErrors()) {
final ClassFile[] clazzFiles = pResult.getClassFiles();
for (final ClassFile clazzFile : clazzFiles) {
final char[][] compoundName = clazzFile.getCompoundName();
final StringBuilder clazzName = new StringBuilder();
for (int j = 0; j < compoundName.length; j++) {
if (j != 0) {
clazzName.append('.');
}
clazzName.append(compoundName[j]);
}
pStore.write(clazzName.toString().replace('.', '/') + ".class", clazzFile.getBytes());
}
}
};
final Map settingsMap = new EclipseJavaCompilerSettings(pSettings).toNativeSettings();
CompilerOptions compilerOptions = new CompilerOptions(settingsMap);
compilerOptions.parseLiteralExpressionsAsConstants = false;
final Compiler compiler = new Compiler(nameEnvironment, policy, compilerOptions, compilerRequestor, problemFactory);
if ( true ) { //JavaCompiler.DUMP_GENERATED_CLASSES ) {
dumpUnits( compilationUnits, pReader );
}
compiler.compile(compilationUnits);
final CompilationProblem[] result = new CompilationProblem[problems.size()];
problems.toArray(result);
return new CompilationResult(result);
}