edu.mit.ai.psg.jeva
Class CompileUnit

java.lang.Object
  |
  +--edu.mit.ai.psg.jeva.CompileUnit

public class CompileUnit

extends Object

CompileUnit -- compile a Java compilation unit (i.e., contents of a .java file) in a string.

Requires access to temporary file space (via File.createTempFile) and currently uses the Sun Java Development Kit JDK1.2 sun.tools.javac compiler (preferrably by including jdk1.2/lib/tools.jar in the classpath, though if not there will try to invoke javac as a process, which requires javac in the command path).

Author:

CarlManning, caroma@ai.mit.edu
Copyright (c) 1999 Massachusetts Institute of Technology

Constructor Summary

CompileUnit()

Method Summary

static Class	compile(String className, String compilationUnit) Write compilation unit out to temp, run javac compiler on it, and load className.
static Class	compile(String className, String compilationUnit, OutputStream outStream, OutputStream errStream) Write compilation unit out to temp, run javac compiler on it, and load className.
static Class	compileFileInTemp(String className) Calls compileFileInTemp on class using System.out and System.err
static Class	compileFileInTemp(String className, OutputStream outStream, OutputStream errStream) Calls java compiler on file previously written with writeCompilationUnitToTemp(String, String), adding temp file space to classpath.
static void	writeCompilationUnitToTemp(String className, String compilationUnit) Write compilation unit to temp.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompileUnit

public CompileUnit()

Method Detail

compile

public static Class compile(String className,
                            String compilationUnit)

Write compilation unit out to temp, run javac compiler on it, and load className. Use System.out and System.err for compiler messages.

Parameters:

className - full class name of class (e.g., myOrg.myPkg.MyClass)

compilationUnit - java source code for class, (e.g., contents of its .java file)

compile

public static Class compile(String className,
                            String compilationUnit,
                            OutputStream outStream,
                            OutputStream errStream)

Write compilation unit out to temp, run javac compiler on it, and load className.

Parameters:

className - full class name of class (e.g., myOrg.myPkg.MyClass)

compilationUnit - java source code for class, (e.g., contents of its .java file)

outStream - output stream for compiler messages

errStream - output stream for compiler messages

writeCompilationUnitToTemp

public static void writeCompilationUnitToTemp(String className,
                                              String compilationUnit)

Write compilation unit to temp. (Temporary file space is obtained using File.createTempFile(String, String, File).) Used for writing out multiple compilation units that depend on each other before compiling one.

Parameters:

className - full class name of class (e.g., myOrg.myPkg.MyClass)

compilationUnit - java source code for class, (e.g., contents of its .java file)

compileFileInTemp

public static Class compileFileInTemp(String className)

Calls compileFileInTemp on class using System.out and System.err

compileFileInTemp

public static Class compileFileInTemp(String className,
                                      OutputStream outStream,
                                      OutputStream errStream)

Calls java compiler on file previously written with writeCompilationUnitToTemp(String, String), adding temp file space to classpath. First tries sun.tools.javac.Main (faster, in-process); if that is not found, tries starting a "javac" command in a separate process.

Parameters:

className - full class name of previously written compilation unit to compile.

outStream - output stream for compiler messages

errStream - output stream for compiler messages