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/* Copyright (c) 2005-2008, Torbjorn Ekman
* 2011-2014, Jesper Öqvist
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package org.extendj;
import java.io.File;
import java.util.Collection;
import org.extendj.ast.CompilationUnit;
import org.extendj.ast.Frontend;
import org.extendj.ast.Problem;
import org.extendj.ast.Program;
import java.io.IOException;
import java.io.PrintStream;
/**
* Compile Java programs.
*/
public class JavaCompiler extends Frontend {
protected enum Mode {
COMPILE,
PRETTY_PRINT,
DUMP_TREE,
STRUCTURED_PRINT,
}
/**
* Entry point for the compiler frontend.
* @param args command-line arguments
*/
public static void main(String args[]) {
int exitCode = new JavaCompiler().run(args);
if (exitCode != 0) {
System.exit(exitCode);
}
}
private Mode mode = Mode.COMPILE;
/**
* Initialize the compiler.
*/
public JavaCompiler() {
this("ExtendJ");
}
/**
* Initialize the compiler.
* @param toolName the name of the compiler
*/
protected JavaCompiler(String toolName) {
super(toolName, ExtendJVersion.getVersion());
}
/**
* @param args command-line arguments
* @return {@code true} on success, {@code false} on error
* @deprecated Use run instead!
*/
@Deprecated
public static boolean compile(String args[]) {
return EXIT_SUCCESS == new JavaCompiler().run(args);
}
/**
* Run the compiler.
* @param args command-line arguments
* @return 0 on success, 1 on error, 2 on configuration error, 3 on system
* error
*/
public int run(String args[]) {
return run(args, Program.defaultBytecodeReader(), Program.defaultJavaParser());
}
@Override
protected int processCompilationUnit(CompilationUnit unit) {
if (mode != Mode.STRUCTURED_PRINT) {
return super.processCompilationUnit(unit);
} else {
if (unit != null && unit.fromSource()) {
try {
System.out.println(unit.structuredPrettyPrint());
} catch (IOException e) {
e.printStackTrace(System.err);
return EXIT_ERROR;
}
}
return EXIT_SUCCESS;
}
}
@SuppressWarnings("rawtypes")
@Override
protected void processErrors(Collection errors, CompilationUnit unit) {
super.processErrors(errors, unit);
switch (mode) {
case PRETTY_PRINT:
try {
unit.prettyPrint(new PrintStream(System.out, false, "UTF-8"));
} catch (IOException e) {
e.printStackTrace(System.err);
}
return;
case DUMP_TREE:
System.out.println(unit.dumpTreeNoRewrite());
return;
}
}
@Override
protected void processNoErrors(CompilationUnit unit) {
switch (mode) {
case COMPILE:
unit.generateClassfile();
return;
case PRETTY_PRINT:
try {
unit.prettyPrint(new PrintStream(System.out, false, "UTF-8"));
} catch (IOException e) {
e.printStackTrace(System.err);
}
return;
case DUMP_TREE:
System.out.println(unit.dumpTreeNoRewrite());
return;
}
}
@Override
protected void initOptions() {
super.initOptions();
program.options().addKeyOption("-XstructuredPrint");
}
/**
* Check that the output directory given in args exists.
*/
@Override
public int processArgs(String[] args) {
int result = super.processArgs(args);
if (result != 0) {
return result;
}
if (program.options().hasValueForOption("-d")) {
String destDir = program.options().getValueForOption("-d");
File dir = new File(destDir);
if (!dir.isDirectory()) {
System.err.println("Error: output directory not found: " + destDir);
return EXIT_CONFIG_ERROR;
}
}
if (program.options().hasOption("-XprettyPrint")) {
mode = Mode.PRETTY_PRINT;
} else if (program.options().hasOption("-XdumpTree")) {
mode = Mode.DUMP_TREE;
} else if (program.options().hasOption("-XstructuredPrint")) {
mode = Mode.STRUCTURED_PRINT;
}
return EXIT_SUCCESS;
}
}
