--- a/src/jdk.compiler/share/classes/com/sun/tools/javah/Gen.java Mon Dec 11 16:43:11 2017 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,383 +0,0 @@
-/*
- * Copyright (c) 2002, 2014, 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.javah;
-
-import java.io.ByteArrayOutputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.PrintWriter;
-import java.io.UnsupportedEncodingException;
-import java.nio.file.NoSuchFileException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Set;
-import java.util.Stack;
-
-import javax.annotation.processing.ProcessingEnvironment;
-import javax.lang.model.element.ExecutableElement;
-import javax.lang.model.element.Modifier;
-import javax.lang.model.element.TypeElement;
-import javax.lang.model.element.VariableElement;
-import javax.lang.model.util.ElementFilter;
-import javax.lang.model.util.Elements;
-import javax.lang.model.util.Types;
-import javax.tools.FileObject;
-import javax.tools.JavaFileManager;
-import javax.tools.JavaFileObject;
-import javax.tools.StandardLocation;
-
-/**
- * An abstraction for generating support files required by native methods.
- * Subclasses are for specific native interfaces. At the time of its
- * original writing, this interface is rich enough to support JNI and the
- * old 1.0-style native method interface.
- *
- * <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></p>
- *
- * @author Sucheta Dambalkar(Revised)
- */
-public abstract class Gen {
- protected String lineSep = System.getProperty("line.separator");
-
- protected ProcessingEnvironment processingEnvironment;
- protected Types types;
- protected Elements elems;
- protected Mangle mangler;
- protected Util util;
-
- protected Gen(Util util) {
- this.util = util;
- }
-
- /*
- * List of classes for which we must generate output.
- */
- protected Set<TypeElement> classes;
- static private final boolean isWindows =
- System.getProperty("os.name").startsWith("Windows");
-
-
- /**
- * Override this abstract method, generating content for the named
- * class into the outputstream.
- */
- protected abstract void write(OutputStream o, TypeElement clazz) throws Util.Exit;
-
- /**
- * Override this method to provide a list of #include statements
- * required by the native interface.
- */
- protected abstract String getIncludes();
-
- /*
- * Output location.
- */
- protected JavaFileManager fileManager;
- protected JavaFileObject outFile;
-
- public void setFileManager(JavaFileManager fm) {
- fileManager = fm;
- }
-
- public void setOutFile(JavaFileObject outFile) {
- this.outFile = outFile;
- }
-
-
- public void setClasses(Set<TypeElement> classes) {
- this.classes = classes;
- }
-
- void setProcessingEnvironment(ProcessingEnvironment pEnv) {
- processingEnvironment = pEnv;
- elems = pEnv.getElementUtils();
- types = pEnv.getTypeUtils();
- mangler = new Mangle(elems, types);
- }
-
- /*
- * Smartness with generated files.
- */
- protected boolean force = false;
-
- public void setForce(boolean state) {
- force = state;
- }
-
- /**
- * We explicitly need to write ASCII files because that is what C
- * compilers understand.
- */
- protected PrintWriter wrapWriter(OutputStream o) throws Util.Exit {
- try {
- return new PrintWriter(new OutputStreamWriter(o, "ISO8859_1"), true);
- } catch (UnsupportedEncodingException use) {
- util.bug("encoding.iso8859_1.not.found");
- return null; /* dead code */
- }
- }
-
- /**
- * After initializing state of an instance, use this method to start
- * processing.
- *
- * Buffer size chosen as an approximation from a single sampling of:
- * expr `du -sk` / `ls *.h | wc -l`
- */
- public void run() throws IOException, ClassNotFoundException, Util.Exit {
- int i = 0;
- if (outFile != null) {
- /* Everything goes to one big file... */
- ByteArrayOutputStream bout = new ByteArrayOutputStream(8192);
- writeFileTop(bout); /* only once */
-
- for (TypeElement t: classes) {
- write(bout, t);
- }
-
- writeIfChanged(bout.toByteArray(), outFile);
- } else {
- /* Each class goes to its own file... */
- for (TypeElement t: classes) {
- ByteArrayOutputStream bout = new ByteArrayOutputStream(8192);
- writeFileTop(bout);
- write(bout, t);
- writeIfChanged(bout.toByteArray(), getFileObject(t.getQualifiedName()));
- }
- }
- }
-
- /*
- * Write the contents of byte[] b to a file named file. Writing
- * is done if either the file doesn't exist or if the contents are
- * different.
- */
- private void writeIfChanged(byte[] b, FileObject file) throws IOException {
- boolean mustWrite = false;
- String event = "[No need to update file ";
-
- if (force) {
- mustWrite = true;
- event = "[Forcefully writing file ";
- } else {
- InputStream in;
- byte[] a;
- try {
- // regrettably, there's no API to get the length in bytes
- // for a FileObject, so we can't short-circuit reading the
- // file here
- in = file.openInputStream();
- a = readBytes(in);
- if (!Arrays.equals(a, b)) {
- mustWrite = true;
- event = "[Overwriting file ";
-
- }
- } catch (FileNotFoundException | NoSuchFileException e) {
- mustWrite = true;
- event = "[Creating file ";
- }
- }
-
- if (util.verbose)
- util.log(event + file + "]");
-
- if (mustWrite) {
- OutputStream out = file.openOutputStream();
- out.write(b); /* No buffering, just one big write! */
- out.close();
- }
- }
-
- protected byte[] readBytes(InputStream in) throws IOException {
- try {
- byte[] array = new byte[in.available() + 1];
- int offset = 0;
- int n;
- while ((n = in.read(array, offset, array.length - offset)) != -1) {
- offset += n;
- if (offset == array.length)
- array = Arrays.copyOf(array, array.length * 2);
- }
-
- return Arrays.copyOf(array, offset);
- } finally {
- in.close();
- }
- }
-
- protected String defineForStatic(TypeElement c, VariableElement f)
- throws Util.Exit {
- CharSequence cnamedoc = c.getQualifiedName();
- CharSequence fnamedoc = f.getSimpleName();
-
- String cname = mangler.mangle(cnamedoc, Mangle.Type.CLASS);
- String fname = mangler.mangle(fnamedoc, Mangle.Type.FIELDSTUB);
-
- if (!f.getModifiers().contains(Modifier.STATIC))
- util.bug("tried.to.define.non.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;
- }
-
- /*
- * 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";
- }
-
- /*
- * File name and file preamble related operations.
- */
- protected void writeFileTop(OutputStream o) throws Util.Exit {
- PrintWriter pw = wrapWriter(o);
- pw.println("/* DO NOT EDIT THIS FILE - it is machine generated */" + lineSep +
- getIncludes());
- }
-
- protected String baseFileName(CharSequence className) {
- return mangler.mangle(className, Mangle.Type.CLASS);
- }
-
- protected FileObject getFileObject(CharSequence className) throws IOException {
- String name = baseFileName(className) + getFileSuffix();
- return fileManager.getFileForOutput(StandardLocation.SOURCE_OUTPUT, "", name, null);
- }
-
- protected String getFileSuffix() {
- return ".h";
- }
-
- /**
- * Including super classes' fields.
- */
-
- List<VariableElement> getAllFields(TypeElement subclazz) {
- List<VariableElement> fields = new ArrayList<>();
- TypeElement cd = null;
- Stack<TypeElement> s = new Stack<>();
-
- 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;
- }
-
- // 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();
- }
-}
-