--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/javac/jvm/JNIWriter.java Tue Mar 13 15:43:40 2012 -0700
@@ -0,0 +1,856 @@
+/*
+ * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.tools.javac.jvm;
+
+import java.io.IOException;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Stack;
+import java.util.StringTokenizer;
+
+import javax.lang.model.element.Element;
+import javax.lang.model.element.ExecutableElement;
+import javax.lang.model.element.Modifier;
+import javax.lang.model.element.Name;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.element.VariableElement;
+import javax.lang.model.type.ArrayType;
+import javax.lang.model.type.DeclaredType;
+import javax.lang.model.type.NoType;
+import javax.lang.model.type.PrimitiveType;
+import javax.lang.model.type.TypeKind;
+import javax.lang.model.type.TypeMirror;
+import javax.lang.model.type.TypeVariable;
+import javax.lang.model.type.TypeVisitor;
+import javax.lang.model.util.ElementFilter;
+import javax.lang.model.util.Elements;
+import javax.lang.model.util.SimpleTypeVisitor8;
+import javax.lang.model.util.Types;
+
+import javax.tools.FileObject;
+import javax.tools.JavaFileManager;
+import javax.tools.StandardLocation;
+
+import com.sun.tools.javac.code.Attribute;
+import com.sun.tools.javac.code.Flags;
+import com.sun.tools.javac.code.Kinds;
+import com.sun.tools.javac.code.Scope;
+import com.sun.tools.javac.code.Symbol.ClassSymbol;
+import com.sun.tools.javac.code.Symtab;
+import com.sun.tools.javac.model.JavacElements;
+import com.sun.tools.javac.model.JavacTypes;
+import com.sun.tools.javac.util.Assert;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Options;
+
+import static com.sun.tools.javac.main.Option.*;
+
+/** This class provides operations to write native header files for classes.
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own risk.
+ * This code and its internal interfaces are subject to change or
+ * deletion without notice.</b>
+ */
+public class JNIWriter {
+ protected static final Context.Key<JNIWriter> jniWriterKey =
+ new Context.Key<JNIWriter>();
+
+ /** Access to files. */
+ private final JavaFileManager fileManager;
+
+ JavacElements elements;
+ JavacTypes types;
+
+ /** The log to use for verbose output.
+ */
+ private final Log log;
+
+ /** Switch: verbose output.
+ */
+ private boolean verbose;
+
+ /** Switch: check all nested classes of top level class
+ */
+ private boolean checkAll;
+
+ private Mangle mangler;
+
+ private Context context;
+
+ private Symtab syms;
+
+ private String lineSep;
+
+ private final boolean isWindows =
+ System.getProperty("os.name").startsWith("Windows");
+
+ /** Get the ClassWriter instance for this context. */
+ public static JNIWriter instance(Context context) {
+ JNIWriter instance = context.get(jniWriterKey);
+ if (instance == null)
+ instance = new JNIWriter(context);
+ return instance;
+ }
+
+ /** Construct a class writer, given an options table.
+ */
+ private JNIWriter(Context context) {
+ context.put(jniWriterKey, this);
+ fileManager = context.get(JavaFileManager.class);
+ log = Log.instance(context);
+
+ Options options = Options.instance(context);
+ verbose = options.isSet(VERBOSE);
+ checkAll = options.isSet("javah:full");
+
+ this.context = context; // for lazyInit()
+ syms = Symtab.instance(context);
+
+ lineSep = System.getProperty("line.separator");
+ }
+
+ private void lazyInit() {
+ if (mangler == null) {
+ elements = JavacElements.instance(context);
+ types = JavacTypes.instance(context);
+ mangler = new Mangle(elements, types);
+ }
+ }
+
+ public boolean needsHeader(ClassSymbol c) {
+ if (c.isLocal() || (c.flags() & Flags.SYNTHETIC) != 0)
+ return false;
+
+ if (checkAll)
+ return needsHeader(c.outermostClass(), true);
+ else
+ return needsHeader(c, false);
+ }
+
+ private boolean needsHeader(ClassSymbol c, boolean checkNestedClasses) {
+ if (c.isLocal() || (c.flags() & Flags.SYNTHETIC) != 0)
+ return false;
+
+ for (Attribute.Compound a: c.attributes_field) {
+ if (a.type.tsym == syms.nativeHeaderType.tsym)
+ return true;
+ }
+ for (Scope.Entry i = c.members_field.elems; i != null; i = i.sibling) {
+ if (i.sym.kind == Kinds.MTH && (i.sym.flags() & Flags.NATIVE) != 0)
+ return true;
+ }
+ if (checkNestedClasses) {
+ for (Scope.Entry i = c.members_field.elems; i != null; i = i.sibling) {
+ if ((i.sym.kind == Kinds.TYP) && needsHeader(((ClassSymbol) i.sym), true))
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /** Emit a class file for a given class.
+ * @param c The class from which a class file is generated.
+ */
+ public FileObject write(ClassSymbol c)
+ throws IOException
+ {
+ String className = c.flatName().toString();
+ FileObject outFile
+ = fileManager.getFileForOutput(StandardLocation.NATIVE_HEADER_OUTPUT,
+ "", className.replaceAll("[.$]", "_") + ".h", null);
+ Writer out = outFile.openWriter();
+ try {
+ write(out, c);
+ if (verbose)
+ log.printVerbose("wrote.file", outFile);
+ out.close();
+ out = null;
+ } finally {
+ if (out != null) {
+ // if we are propogating an exception, delete the file
+ out.close();
+ outFile.delete();
+ outFile = null;
+ }
+ }
+ return outFile; // may be null if write failed
+ }
+
+ public void write(Writer out, ClassSymbol sym)
+ throws IOException {
+ lazyInit();
+ try {
+ String cname = mangler.mangle(sym.fullname, Mangle.Type.CLASS);
+ println(out, fileTop());
+ println(out, includes());
+ println(out, guardBegin(cname));
+ println(out, cppGuardBegin());
+
+ writeStatics(out, sym);
+ writeMethods(out, sym, cname);
+
+ println(out, cppGuardEnd());
+ println(out, guardEnd(cname));
+ } catch (TypeSignature.SignatureException e) {
+ throw new IOException(e);
+ }
+ }
+
+ protected void writeStatics(Writer out, ClassSymbol sym) throws IOException {
+ List<VariableElement> classfields = getAllFields(sym);
+
+ for (VariableElement v: classfields) {
+ if (!v.getModifiers().contains(Modifier.STATIC))
+ continue;
+ String s = null;
+ s = defineForStatic(sym, v);
+ if (s != null) {
+ println(out, s);
+ }
+ }
+ }
+
+ /**
+ * Including super class fields.
+ */
+ List<VariableElement> getAllFields(TypeElement subclazz) {
+ List<VariableElement> fields = new ArrayList<VariableElement>();
+ TypeElement cd = null;
+ Stack<TypeElement> s = new Stack<TypeElement>();
+
+ cd = subclazz;
+ while (true) {
+ s.push(cd);
+ TypeElement c = (TypeElement) (types.asElement(cd.getSuperclass()));
+ if (c == null)
+ break;
+ cd = c;
+ }
+
+ while (!s.empty()) {
+ cd = s.pop();
+ fields.addAll(ElementFilter.fieldsIn(cd.getEnclosedElements()));
+ }
+
+ return fields;
+ }
+
+ protected String defineForStatic(TypeElement c, VariableElement f) {
+ CharSequence cnamedoc = c.getQualifiedName();
+ CharSequence fnamedoc = f.getSimpleName();
+
+ String cname = mangler.mangle(cnamedoc, Mangle.Type.CLASS);
+ String fname = mangler.mangle(fnamedoc, Mangle.Type.FIELDSTUB);
+
+ Assert.check(f.getModifiers().contains(Modifier.STATIC));
+
+ if (f.getModifiers().contains(Modifier.FINAL)) {
+ Object value = null;
+
+ value = f.getConstantValue();
+
+ if (value != null) { /* so it is a ConstantExpression */
+ String constString = null;
+ if ((value instanceof Integer)
+ || (value instanceof Byte)
+ || (value instanceof Short)) {
+ /* covers byte, short, int */
+ constString = value.toString() + "L";
+ } else if (value instanceof Boolean) {
+ constString = ((Boolean) value) ? "1L" : "0L";
+ } else if (value instanceof Character) {
+ Character ch = (Character) value;
+ constString = String.valueOf(((int) ch) & 0xffff) + "L";
+ } else if (value instanceof Long) {
+ // Visual C++ supports the i64 suffix, not LL.
+ if (isWindows)
+ constString = value.toString() + "i64";
+ else
+ constString = value.toString() + "LL";
+ } else if (value instanceof Float) {
+ /* bug for bug */
+ float fv = ((Float)value).floatValue();
+ if (Float.isInfinite(fv))
+ constString = ((fv < 0) ? "-" : "") + "Inff";
+ else
+ constString = value.toString() + "f";
+ } else if (value instanceof Double) {
+ /* bug for bug */
+ double d = ((Double)value).doubleValue();
+ if (Double.isInfinite(d))
+ constString = ((d < 0) ? "-" : "") + "InfD";
+ else
+ constString = value.toString();
+ }
+
+ if (constString != null) {
+ StringBuilder s = new StringBuilder("#undef ");
+ s.append(cname); s.append("_"); s.append(fname); s.append(lineSep);
+ s.append("#define "); s.append(cname); s.append("_");
+ s.append(fname); s.append(" "); s.append(constString);
+ return s.toString();
+ }
+
+ }
+ }
+
+ return null;
+ }
+
+
+ protected void writeMethods(Writer out, ClassSymbol sym, String cname)
+ throws IOException, TypeSignature.SignatureException {
+ List<ExecutableElement> classmethods = ElementFilter.methodsIn(sym.getEnclosedElements());
+ for (ExecutableElement md: classmethods) {
+ if(md.getModifiers().contains(Modifier.NATIVE)){
+ TypeMirror mtr = types.erasure(md.getReturnType());
+ String sig = signature(md);
+ TypeSignature newtypesig = new TypeSignature(elements);
+ CharSequence methodName = md.getSimpleName();
+ boolean longName = false;
+ for (ExecutableElement md2: classmethods) {
+ if ((md2 != md)
+ && (methodName.equals(md2.getSimpleName()))
+ && (md2.getModifiers().contains(Modifier.NATIVE)))
+ longName = true;
+
+ }
+ println(out, "/*");
+ println(out, " * Class: " + cname);
+ println(out, " * Method: " +
+ mangler.mangle(methodName, Mangle.Type.FIELDSTUB));
+ println(out, " * Signature: " + newtypesig.getTypeSignature(sig, mtr));
+ println(out, " */");
+ println(out, "JNIEXPORT " + jniType(mtr) +
+ " JNICALL " +
+ mangler.mangleMethod(md, sym,
+ (longName) ?
+ Mangle.Type.METHOD_JNI_LONG :
+ Mangle.Type.METHOD_JNI_SHORT));
+ print(out, " (JNIEnv *, ");
+ List<? extends VariableElement> paramargs = md.getParameters();
+ List<TypeMirror> args = new ArrayList<TypeMirror>();
+ for (VariableElement p: paramargs) {
+ args.add(types.erasure(p.asType()));
+ }
+ if (md.getModifiers().contains(Modifier.STATIC))
+ print(out, "jclass");
+ else
+ print(out, "jobject");
+
+ for (TypeMirror arg: args) {
+ print(out, ", ");
+ print(out, jniType(arg));
+ }
+ println(out, ");"
+ + lineSep);
+ }
+ }
+ }
+
+ // c.f. MethodDoc.signature
+ String signature(ExecutableElement e) {
+ StringBuilder sb = new StringBuilder("(");
+ String sep = "";
+ for (VariableElement p: e.getParameters()) {
+ sb.append(sep);
+ sb.append(types.erasure(p.asType()).toString());
+ sep = ",";
+ }
+ sb.append(")");
+ return sb.toString();
+ }
+
+ protected final String jniType(TypeMirror t) {
+ TypeElement throwable = elements.getTypeElement("java.lang.Throwable");
+ TypeElement jClass = elements.getTypeElement("java.lang.Class");
+ TypeElement jString = elements.getTypeElement("java.lang.String");
+ Element tclassDoc = types.asElement(t);
+
+
+ switch (t.getKind()) {
+ case ARRAY: {
+ TypeMirror ct = ((ArrayType) t).getComponentType();
+ switch (ct.getKind()) {
+ case BOOLEAN: return "jbooleanArray";
+ case BYTE: return "jbyteArray";
+ case CHAR: return "jcharArray";
+ case SHORT: return "jshortArray";
+ case INT: return "jintArray";
+ case LONG: return "jlongArray";
+ case FLOAT: return "jfloatArray";
+ case DOUBLE: return "jdoubleArray";
+ case ARRAY:
+ case DECLARED: return "jobjectArray";
+ default: throw new Error(ct.toString());
+ }
+ }
+
+ case VOID: return "void";
+ case BOOLEAN: return "jboolean";
+ case BYTE: return "jbyte";
+ case CHAR: return "jchar";
+ case SHORT: return "jshort";
+ case INT: return "jint";
+ case LONG: return "jlong";
+ case FLOAT: return "jfloat";
+ case DOUBLE: return "jdouble";
+
+ case DECLARED: {
+ if (tclassDoc.equals(jString))
+ return "jstring";
+ else if (types.isAssignable(t, throwable.asType()))
+ return "jthrowable";
+ else if (types.isAssignable(t, jClass.asType()))
+ return "jclass";
+ else
+ return "jobject";
+ }
+ }
+
+ Assert.check(false, "jni unknown type");
+ return null; /* dead code. */
+ }
+
+ protected String fileTop() {
+ return "/* DO NOT EDIT THIS FILE - it is machine generated */";
+ }
+
+ protected String includes() {
+ return "#include <jni.h>";
+ }
+
+ /*
+ * Deal with the C pre-processor.
+ */
+ protected String cppGuardBegin() {
+ return "#ifdef __cplusplus" + lineSep
+ + "extern \"C\" {" + lineSep
+ + "#endif";
+ }
+
+ protected String cppGuardEnd() {
+ return "#ifdef __cplusplus" + lineSep
+ + "}" + lineSep
+ + "#endif";
+ }
+
+ protected String guardBegin(String cname) {
+ return "/* Header for class " + cname + " */" + lineSep
+ + lineSep
+ + "#ifndef _Included_" + cname + lineSep
+ + "#define _Included_" + cname;
+ }
+
+ protected String guardEnd(String cname) {
+ return "#endif";
+ }
+
+ protected void print(Writer out, String text) throws IOException {
+ out.write(text);
+ }
+
+ protected void println(Writer out, String text) throws IOException {
+ out.write(text);
+ out.write(lineSep);
+ }
+
+
+ private static class Mangle {
+
+ public static class Type {
+ public static final int CLASS = 1;
+ public static final int FIELDSTUB = 2;
+ public static final int FIELD = 3;
+ public static final int JNI = 4;
+ public static final int SIGNATURE = 5;
+ public static final int METHOD_JDK_1 = 6;
+ public static final int METHOD_JNI_SHORT = 7;
+ public static final int METHOD_JNI_LONG = 8;
+ };
+
+ private Elements elems;
+ private Types types;
+
+ Mangle(Elements elems, Types types) {
+ this.elems = elems;
+ this.types = types;
+ }
+
+ public final String mangle(CharSequence name, int mtype) {
+ StringBuilder result = new StringBuilder(100);
+ int length = name.length();
+
+ for (int i = 0; i < length; i++) {
+ char ch = name.charAt(i);
+ if (isalnum(ch)) {
+ result.append(ch);
+ } else if ((ch == '.') &&
+ mtype == Mangle.Type.CLASS) {
+ result.append('_');
+ } else if (( ch == '$') &&
+ mtype == Mangle.Type.CLASS) {
+ result.append('_');
+ result.append('_');
+ } else if (ch == '_' && mtype == Mangle.Type.FIELDSTUB) {
+ result.append('_');
+ } else if (ch == '_' && mtype == Mangle.Type.CLASS) {
+ result.append('_');
+ } else if (mtype == Mangle.Type.JNI) {
+ String esc = null;
+ if (ch == '_')
+ esc = "_1";
+ else if (ch == '.')
+ esc = "_";
+ else if (ch == ';')
+ esc = "_2";
+ else if (ch == '[')
+ esc = "_3";
+ if (esc != null) {
+ result.append(esc);
+ } else {
+ result.append(mangleChar(ch));
+ }
+ } else if (mtype == Mangle.Type.SIGNATURE) {
+ if (isprint(ch)) {
+ result.append(ch);
+ } else {
+ result.append(mangleChar(ch));
+ }
+ } else {
+ result.append(mangleChar(ch));
+ }
+ }
+
+ return result.toString();
+ }
+
+ public String mangleMethod(ExecutableElement method, TypeElement clazz,
+ int mtype) throws TypeSignature.SignatureException {
+ StringBuilder result = new StringBuilder(100);
+ result.append("Java_");
+
+ if (mtype == Mangle.Type.METHOD_JDK_1) {
+ result.append(mangle(clazz.getQualifiedName(), Mangle.Type.CLASS));
+ result.append('_');
+ result.append(mangle(method.getSimpleName(),
+ Mangle.Type.FIELD));
+ result.append("_stub");
+ return result.toString();
+ }
+
+ /* JNI */
+ result.append(mangle(getInnerQualifiedName(clazz), Mangle.Type.JNI));
+ result.append('_');
+ result.append(mangle(method.getSimpleName(),
+ Mangle.Type.JNI));
+ if (mtype == Mangle.Type.METHOD_JNI_LONG) {
+ result.append("__");
+ String typesig = signature(method);
+ TypeSignature newTypeSig = new TypeSignature(elems);
+ String sig = newTypeSig.getTypeSignature(typesig, method.getReturnType());
+ sig = sig.substring(1);
+ sig = sig.substring(0, sig.lastIndexOf(')'));
+ sig = sig.replace('/', '.');
+ result.append(mangle(sig, Mangle.Type.JNI));
+ }
+
+ return result.toString();
+ }
+ //where
+ private String getInnerQualifiedName(TypeElement clazz) {
+ return elems.getBinaryName(clazz).toString();
+ }
+
+ public final String mangleChar(char ch) {
+ String s = Integer.toHexString(ch);
+ int nzeros = 5 - s.length();
+ char[] result = new char[6];
+ result[0] = '_';
+ for (int i = 1; i <= nzeros; i++)
+ result[i] = '0';
+ for (int i = nzeros+1, j = 0; i < 6; i++, j++)
+ result[i] = s.charAt(j);
+ return new String(result);
+ }
+
+ // Warning: duplicated in Gen
+ private String signature(ExecutableElement e) {
+ StringBuilder sb = new StringBuilder();
+ String sep = "(";
+ for (VariableElement p: e.getParameters()) {
+ sb.append(sep);
+ sb.append(types.erasure(p.asType()).toString());
+ sep = ",";
+ }
+ sb.append(")");
+ return sb.toString();
+ }
+
+ /* Warning: Intentional ASCII operation. */
+ private static boolean isalnum(char ch) {
+ return ch <= 0x7f && /* quick test */
+ ((ch >= 'A' && ch <= 'Z') ||
+ (ch >= 'a' && ch <= 'z') ||
+ (ch >= '0' && ch <= '9'));
+ }
+
+ /* Warning: Intentional ASCII operation. */
+ private static boolean isprint(char ch) {
+ return ch >= 32 && ch <= 126;
+ }
+ }
+
+ private static class TypeSignature {
+ static class SignatureException extends Exception {
+ private static final long serialVersionUID = 1L;
+ SignatureException(String reason) {
+ super(reason);
+ }
+ }
+
+ Elements elems;
+
+ /* Signature Characters */
+
+ private static final String SIG_VOID = "V";
+ private static final String SIG_BOOLEAN = "Z";
+ private static final String SIG_BYTE = "B";
+ private static final String SIG_CHAR = "C";
+ private static final String SIG_SHORT = "S";
+ private static final String SIG_INT = "I";
+ private static final String SIG_LONG = "J";
+ private static final String SIG_FLOAT = "F";
+ private static final String SIG_DOUBLE = "D";
+ private static final String SIG_ARRAY = "[";
+ private static final String SIG_CLASS = "L";
+
+
+
+ public TypeSignature(Elements elems){
+ this.elems = elems;
+ }
+
+ /*
+ * Returns the type signature of a field according to JVM specs
+ */
+ public String getTypeSignature(String javasignature) throws SignatureException {
+ return getParamJVMSignature(javasignature);
+ }
+
+ /*
+ * Returns the type signature of a method according to JVM specs
+ */
+ public String getTypeSignature(String javasignature, TypeMirror returnType)
+ throws SignatureException {
+ String signature = null; //Java type signature.
+ String typeSignature = null; //Internal type signature.
+ List<String> params = new ArrayList<String>(); //List of parameters.
+ String paramsig = null; //Java parameter signature.
+ String paramJVMSig = null; //Internal parameter signature.
+ String returnSig = null; //Java return type signature.
+ String returnJVMType = null; //Internal return type signature.
+ int dimensions = 0; //Array dimension.
+
+ int startIndex = -1;
+ int endIndex = -1;
+ StringTokenizer st = null;
+ int i = 0;
+
+ // Gets the actual java signature without parentheses.
+ if (javasignature != null) {
+ startIndex = javasignature.indexOf("(");
+ endIndex = javasignature.indexOf(")");
+ }
+
+ if (((startIndex != -1) && (endIndex != -1))
+ &&(startIndex+1 < javasignature.length())
+ &&(endIndex < javasignature.length())) {
+ signature = javasignature.substring(startIndex+1, endIndex);
+ }
+
+ // Separates parameters.
+ if (signature != null) {
+ if (signature.indexOf(",") != -1) {
+ st = new StringTokenizer(signature, ",");
+ if (st != null) {
+ while (st.hasMoreTokens()) {
+ params.add(st.nextToken());
+ }
+ }
+ } else {
+ params.add(signature);
+ }
+ }
+
+ /* JVM type signature. */
+ typeSignature = "(";
+
+ // Gets indivisual internal parameter signature.
+ while (params.isEmpty() != true) {
+ paramsig = params.remove(i).trim();
+ paramJVMSig = getParamJVMSignature(paramsig);
+ if (paramJVMSig != null) {
+ typeSignature += paramJVMSig;
+ }
+ }
+
+ typeSignature += ")";
+
+ // Get internal return type signature.
+
+ returnJVMType = "";
+ if (returnType != null) {
+ dimensions = dimensions(returnType);
+ }
+
+ //Gets array dimension of return type.
+ while (dimensions-- > 0) {
+ returnJVMType += "[";
+ }
+ if (returnType != null) {
+ returnSig = qualifiedTypeName(returnType);
+ returnJVMType += getComponentType(returnSig);
+ } else {
+ System.out.println("Invalid return type.");
+ }
+
+ typeSignature += returnJVMType;
+
+ return typeSignature;
+ }
+
+ /*
+ * Returns internal signature of a parameter.
+ */
+ private String getParamJVMSignature(String paramsig) throws SignatureException {
+ String paramJVMSig = "";
+ String componentType ="";
+
+ if(paramsig != null){
+
+ if(paramsig.indexOf("[]") != -1) {
+ // Gets array dimension.
+ int endindex = paramsig.indexOf("[]");
+ componentType = paramsig.substring(0, endindex);
+ String dimensionString = paramsig.substring(endindex);
+ if(dimensionString != null){
+ while(dimensionString.indexOf("[]") != -1){
+ paramJVMSig += "[";
+ int beginindex = dimensionString.indexOf("]") + 1;
+ if(beginindex < dimensionString.length()){
+ dimensionString = dimensionString.substring(beginindex);
+ }else
+ dimensionString = "";
+ }
+ }
+ } else componentType = paramsig;
+
+ paramJVMSig += getComponentType(componentType);
+ }
+ return paramJVMSig;
+ }
+
+ /*
+ * Returns internal signature of a component.
+ */
+ private String getComponentType(String componentType) throws SignatureException {
+
+ String JVMSig = "";
+
+ if(componentType != null){
+ if(componentType.equals("void")) JVMSig += SIG_VOID ;
+ else if(componentType.equals("boolean")) JVMSig += SIG_BOOLEAN ;
+ else if(componentType.equals("byte")) JVMSig += SIG_BYTE ;
+ else if(componentType.equals("char")) JVMSig += SIG_CHAR ;
+ else if(componentType.equals("short")) JVMSig += SIG_SHORT ;
+ else if(componentType.equals("int")) JVMSig += SIG_INT ;
+ else if(componentType.equals("long")) JVMSig += SIG_LONG ;
+ else if(componentType.equals("float")) JVMSig += SIG_FLOAT ;
+ else if(componentType.equals("double")) JVMSig += SIG_DOUBLE ;
+ else {
+ if(!componentType.equals("")){
+ TypeElement classNameDoc = elems.getTypeElement(componentType);
+
+ if(classNameDoc == null){
+ throw new SignatureException(componentType);
+ }else {
+ String classname = classNameDoc.getQualifiedName().toString();
+ String newclassname = classname.replace('.', '/');
+ JVMSig += "L";
+ JVMSig += newclassname;
+ JVMSig += ";";
+ }
+ }
+ }
+ }
+ return JVMSig;
+ }
+
+ int dimensions(TypeMirror t) {
+ if (t.getKind() != TypeKind.ARRAY)
+ return 0;
+ return 1 + dimensions(((ArrayType) t).getComponentType());
+ }
+
+
+ String qualifiedTypeName(TypeMirror type) {
+ TypeVisitor<Name, Void> v = new SimpleTypeVisitor8<Name, Void>() {
+ @Override
+ public Name visitArray(ArrayType t, Void p) {
+ return t.getComponentType().accept(this, p);
+ }
+
+ @Override
+ public Name visitDeclared(DeclaredType t, Void p) {
+ return ((TypeElement) t.asElement()).getQualifiedName();
+ }
+
+ @Override
+ public Name visitPrimitive(PrimitiveType t, Void p) {
+ return elems.getName(t.toString());
+ }
+
+ @Override
+ public Name visitNoType(NoType t, Void p) {
+ if (t.getKind() == TypeKind.VOID)
+ return elems.getName("void");
+ return defaultAction(t, p);
+ }
+
+ @Override
+ public Name visitTypeVariable(TypeVariable t, Void p) {
+ return t.getUpperBound().accept(this, p);
+ }
+ };
+ return v.visit(type).toString();
+ }
+ }
+
+}