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/**
* Copyright 2015 JogAmp Community. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing
* permissions and limitations under the License.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.gluegen.jcpp;
import java.io.File;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Reader;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import com.jogamp.gluegen.ASTLocusTag;
import com.jogamp.gluegen.ConstantDefinition;
import com.jogamp.gluegen.GenericCPP;
import com.jogamp.gluegen.GlueGen;
import com.jogamp.gluegen.GlueGenException;
import com.jogamp.gluegen.Logging;
import com.jogamp.gluegen.Logging.LoggerIf;
public class JCPP implements GenericCPP {
private final LoggerIf LOG;
public final Preprocessor cpp;
private OutputStream out;
private final List<String> includePaths;
private final boolean enableCopyOutput2Stderr;
public JCPP(final List<String> includePaths, final boolean debug, final boolean copyOutput2Stderr,
final boolean enablePragmaOnce) {
LOG = Logging.getLogger(JCPP.class);
setOut(System.out);
this.includePaths = includePaths;
this.enableCopyOutput2Stderr = copyOutput2Stderr;
cpp = new Preprocessor();
cpp.addFeature(Feature.DIGRAPHS);
cpp.addFeature(Feature.TRIGRAPHS);
cpp.addFeature(Feature.LINEMARKERS);
cpp.addFeature(Feature.UNIFIED_OUTPUT);
cpp.addFeature(Feature.CSYNTAX);
cpp.addFeature(Feature.KEEPCOMMENTS);
if (enablePragmaOnce) {
cpp.addFeature(Feature.PRAGMA_ONCE);
}
cpp.addWarning(Warning.IMPORT);
cpp.setListener(new DefaultPreprocessorListener() {
@Override
public void handleError(final Source source, final int line, final int column,
final String msg) throws LexerException {
super.handleError(source, line, column, msg);
throw new GlueGenException(msg, new ASTLocusTag(source.getPath(), line, column, null));
}
});
if (debug) {
cpp.addFeature(Feature.DEBUG);
}
cpp.setSystemIncludePath(includePaths);
cpp.setQuoteIncludePath(includePaths);
if (cpp.getFeature(Feature.DEBUG)) {
LOG.info("#" + "include \"...\" search starts here:");
for (final String dir : cpp.getQuoteIncludePath())
LOG.info(" " + dir);
LOG.info("#" + "include <...> search starts here:");
for (final String dir : cpp.getSystemIncludePath())
LOG.info(" " + dir);
LOG.info("End of search list.");
}
}
@Override
public void addDefine(final String name, final String value) throws LexerException {
cpp.addMacro(name, value);
}
@Override
public List<ConstantDefinition> getConstantDefinitions() throws GlueGenException {
final List<ConstantDefinition> constants = new ArrayList<ConstantDefinition>();
final List<Macro> macros;
try {
macros = cpp.getMacros(true);
} catch (final Throwable t) {
throw new GlueGenException(t);
}
final int count = macros.size();
for(int i=0; i<count; i++) {
final Macro macro = macros.get(i);
final String name = macro.getName();
if( !GlueGen.__GLUEGEN__.equals(name) ) {
if( !macro.isFunctionLike() ) {
final String value = macro.getText();
if ( ConstantDefinition.isConstantExpression(value) ) {
final Source source = macro.getSource();
final ASTLocusTag locus = new ASTLocusTag(
null != source ? source.getPath() : "<programmatic>",
null != source ? source.getLine() : -1,
null != source ? source.getColumn() : -1,
macro.toString());
final ConstantDefinition c = new ConstantDefinition(macro.getName(), value, null, locus);
constants.add(c);
}
}
}
}
return constants;
}
@Override
public String findFile(final String filename) {
final String sep = File.separator;
for (final String inclPath : includePaths) {
final String fullPath = inclPath + sep + filename;
final File file = new File(fullPath);
if (file.exists()) {
return fullPath;
}
}
return null;
}
@Override
public OutputStream out() {
return out;
}
@Override
public void setOut(final OutputStream out) {
this.out = out;
}
@Override
public void run(final Reader reader, final String filename) throws GlueGenException {
final PrintWriter writer = new PrintWriter(out);
cpp.addInput(new LexerSource(reader, true) {
@Override
public String getPath() { return filename; }
@Override
public String getName() { return filename; }
@Override
public String toString() { return "file " + filename; }
} );
try {
for (;;) {
final Token tok = cpp.token();
if (tok == null)
break;
if (tok.getType() == Token.EOF)
break;
final String s = tok.getText();
writer.print(s);
if (enableCopyOutput2Stderr) {
System.err.print(s);
System.err.flush();
}
}
writer.flush();
} catch (final Exception e) {
final StringBuilder buf = new StringBuilder("Preprocessor failed:\n");
Source s = cpp.getSource();
while (s != null) {
buf.append(" -> ").append(s).append("\n");
s = s.getParent();
}
buf.append(" : {0}\n");
LOG.log(Level.SEVERE, buf.toString(), e);
if( e instanceof GlueGenException ) {
throw (GlueGenException)e;
} else {
throw new GlueGenException("Preprocessor failed",
new ASTLocusTag(null != s ? s.getPath() : "n/a",
null != s ? s.getLine() : -1,
null != s ? s.getColumn() : -1, null), e);
}
}
}
}
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