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Processing is a programming language, development environment, and online community.
This Java Mode package contains the Java mode for Processing IDE.
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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
Part of the Processing project - http://processing.org
Copyright (c) 2004-12 Ben Fry and Casey Reas
Copyright (c) 2001-04 Massachusetts Institute of Technology
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package processing.mode.java;
import processing.app.*;
import processing.app.ui.Editor;
import processing.core.*;
import java.io.*;
import java.lang.reflect.Method;
import java.util.HashMap;
//import org.eclipse.jdt.core.compiler.batch.BatchCompiler;
//import org.eclipse.jdt.core.compiler.CompilationProgress;
public class Compiler {
static HashMap importSuggestions;
static {
importSuggestions = new HashMap<>();
importSuggestions.put("Arrays", "java.util.Arrays");
importSuggestions.put("Collections", "java.util.Collections");
importSuggestions.put("Date", "java.util.Date");
importSuggestions.put("Frame", "java.awt.Frame");
importSuggestions.put("Iterator", "java.util.Iterator");
}
/**
* Compile with ECJ. See http://j.mp/8paifz for documentation.
*
* @param sketch Sketch object to be compiled, used for placing exceptions
* @param buildPath Where the temporary files live and will be built from.
* @return true if successful.
* @throws SketchException Only if there's a problem. Only then.
*/
static public boolean compile(JavaBuild build) throws SketchException {
// This will be filled in if anyone gets angry
SketchException exception = null;
boolean success = false;
String baseCommand[] = new String[] {
"-g",
"-Xemacs",
//"-noExit", // not necessary for ecj
"-source", "1.7",
"-target", "1.7",
"-encoding", "utf8",
"-classpath", build.getClassPath(),
"-nowarn", // we're not currently interested in warnings (works in ecj)
"-d", build.getBinFolder().getAbsolutePath() // output the classes in the buildPath
};
//PApplet.println(baseCommand);
String[] sourceFiles = Util.listFiles(build.getSrcFolder(), false, ".java");
String[] command = PApplet.concat(baseCommand, sourceFiles);
//PApplet.println(command);
try {
// Load errors into a local StringBuilder
final StringBuilder errorBuffer = new StringBuilder();
// Create single method dummy writer class to slurp errors from ecj
Writer internalWriter = new Writer() {
public void write(char[] buf, int off, int len) {
errorBuffer.append(buf, off, len);
}
public void flush() { }
public void close() { }
};
// Wrap as a PrintWriter since that's what compile() wants
PrintWriter writer = new PrintWriter(internalWriter);
//result = com.sun.tools.javac.Main.compile(command, writer);
PrintWriter outWriter = new PrintWriter(System.out);
// Version that's not dynamically loaded
//CompilationProgress progress = null;
//success = BatchCompiler.compile(command, outWriter, writer, progress);
// Version that *is* dynamically loaded. First gets the mode class loader
// so that it can grab the compiler JAR files from it.
ClassLoader loader = build.mode.getClassLoader();
try {
Class batchClass =
Class.forName("org.eclipse.jdt.core.compiler.batch.BatchCompiler", false, loader);
Class progressClass =
Class.forName("org.eclipse.jdt.core.compiler.CompilationProgress", false, loader);
Class[] compileArgs =
new Class[] { String[].class, PrintWriter.class, PrintWriter.class, progressClass };
Method compileMethod = batchClass.getMethod("compile", compileArgs);
success = (Boolean)
compileMethod.invoke(null, new Object[] { command, outWriter, writer, null });
} catch (Exception e) {
e.printStackTrace();
throw new SketchException("Unknown error inside the compiler.");
}
// Close out the stream for good measure
writer.flush();
writer.close();
BufferedReader reader =
new BufferedReader(new StringReader(errorBuffer.toString()));
//System.err.println(errorBuffer.toString());
String line = null;
while ((line = reader.readLine()) != null) {
//System.out.println("got line " + line); // debug
// get first line, which contains file name, line number,
// and at least the first line of the error message
String errorFormat = "([\\w\\d_]+.java):(\\d+):\\s*(.*):\\s*(.*)\\s*";
String[] pieces = PApplet.match(line, errorFormat);
//PApplet.println(pieces);
// if it's something unexpected, die and print the mess to the console
if (pieces == null) {
exception = new SketchException("Cannot parse error text: " + line);
exception.hideStackTrace();
// Send out the rest of the error message to the console.
System.err.println(line);
while ((line = reader.readLine()) != null) {
System.err.println(line);
}
break;
}
// translate the java filename and line number into a un-preprocessed
// location inside a source file or tab in the environment.
String dotJavaFilename = pieces[1];
// Line numbers are 1-indexed from javac
int dotJavaLineIndex = PApplet.parseInt(pieces[2]) - 1;
String errorMessage = pieces[4];
exception = build.placeException(errorMessage,
dotJavaFilename,
dotJavaLineIndex);
if (exception == null) {
exception = new SketchException(errorMessage);
}
String[] parts = null;
if (errorMessage.startsWith("The import ") &&
errorMessage.endsWith("cannot be resolved")) {
// The import poo cannot be resolved
//import poo.shoe.blah.*;
//String what = errorMessage.substring("The import ".length());
String[] m = PApplet.match(errorMessage, "The import (.*) cannot be resolved");
//what = what.substring(0, what.indexOf(' '));
if (m != null) {
// System.out.println("'" + m[1] + "'");
if (m[1].equals("processing.xml")) {
exception.setMessage("processing.xml no longer exists, this code needs to be updated for 2.0.");
System.err.println("The processing.xml library has been replaced " +
"with a new 'XML' class that's built-in.");
handleCrustyCode();
} else {
exception.setMessage("The package " +
"\u201C" + m[1] + "\u201D" +
" does not exist. " +
"You might be missing a library.");
System.err.println("Libraries must be " +
"installed in a folder named 'libraries' " +
"inside the sketchbook folder " +
"(see the Preferences window).");
}
}
} else if (errorMessage.endsWith("cannot be resolved to a type")) {
// xxx cannot be resolved to a type
//xxx c;
String what = errorMessage.substring(0, errorMessage.indexOf(' '));
if (what.equals("BFont") ||
what.equals("BGraphics") ||
what.equals("BImage")) {
exception.setMessage(what + " has been replaced with P" + what.substring(1));
handleCrustyCode();
} else {
exception.setMessage("Cannot find a class or type " +
"named \u201C" + what + "\u201D");
String suggestion = importSuggestions.get(what);
if (suggestion != null) {
System.err.println("You may need to add \"import " + suggestion + ";\" to the top of your sketch.");
System.err.println("To make sketches more portable, imports that are not part of the Processing API were removed in Processing 2.");
System.err.println("See the changes page for more information: https://github.com/processing/processing/wiki/Changes");
}
}
} else if (errorMessage.endsWith("cannot be resolved")) {
// xxx cannot be resolved
//println(xxx);
String what = errorMessage.substring(0, errorMessage.indexOf(' '));
if (what.equals("LINE_LOOP") ||
what.equals("LINE_STRIP")) {
exception.setMessage("LINE_LOOP and LINE_STRIP are not available, " +
"please update your code.");
handleCrustyCode();
} else if (what.equals("framerate")) {
exception.setMessage("framerate should be changed to frameRate.");
handleCrustyCode();
} else if (what.equals("screen")) {
exception.setMessage("Change screen.width and screen.height to " +
"displayWidth and displayHeight.");
handleCrustyCode();
} else if (what.equals("screenWidth") ||
what.equals("screenHeight")) {
exception.setMessage("Change screenWidth and screenHeight to " +
"displayWidth and displayHeight.");
handleCrustyCode();
} else {
exception.setMessage("Cannot find anything " +
"named \u201C" + what + "\u201D");
}
} else if (errorMessage.startsWith("Duplicate")) {
// "Duplicate nested type xxx"
// "Duplicate local variable xxx"
} else if (null != (parts = PApplet.match(errorMessage,
"literal (\\S*) of type (\\S*) is out of range"))) {
if ("int".equals(parts[2])) {
exception.setMessage("The type int can't handle numbers that big. Try "
+ parts[1] + "L to upgrade to long.");
} else {
// I'd like to give an essay on BigInteger and BigDecimal, but
// this margin is too narrow to contain it.
exception.setMessage("Even the type " + parts[2] + " can't handle "
+ parts[1] + ". Research big numbers in Java.");
}
} else {
// The method xxx(String) is undefined for the type Temporary_XXXX_XXXX
//xxx("blah");
// The method xxx(String, int) is undefined for the type Temporary_XXXX_XXXX
//xxx("blah", 34);
// The method xxx(String, int) is undefined for the type PApplet
//PApplet.sub("ding");
String undefined =
"The method (\\S+\\(.*\\)) is undefined for the type (.*)";
parts = PApplet.match(errorMessage, undefined);
if (parts != null) {
if (parts[1].equals("framerate(int)")) {
exception.setMessage("framerate() no longer exists, use frameRate() instead.");
handleCrustyCode();
} else if (parts[1].equals("push()")) {
exception.setMessage("push() no longer exists, use pushMatrix() instead.");
handleCrustyCode();
} else if (parts[1].equals("pop()")) {
exception.setMessage("pop() no longer exists, use popMatrix() instead.");
handleCrustyCode();
} else {
String mess = "The function " + parts[1] + " does not exist.";
exception.setMessage(mess);
}
break;
}
}
if (exception != null) {
// The stack trace just shows that this happened inside the compiler,
// which is a red herring. Don't ever show it for compiler stuff.
exception.hideStackTrace();
break;
}
}
} catch (IOException e) {
String bigSigh = "Error while compiling. (" + e.getMessage() + ")";
exception = new SketchException(bigSigh);
e.printStackTrace();
success = false;
}
// In case there was something else.
if (exception != null) throw exception;
return success;
}
static protected void handleCrustyCode() {
System.err.println("This code needs to be updated " +
"for this version of Processing, " +
"please read the Changes page on the Wiki.");
Editor.showChanges();
}
protected int caretColumn(String caretLine) {
return caretLine.indexOf("^");
}
}
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