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The Compile.java Java example source code
/*
* Copyright (c) 1999, 2004, 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.
*/
/*
* COMPONENT_NAME: idl.parser
*
* ORIGINS: 27
*
* Licensed Materials - Property of IBM
* 5639-D57 (C) COPYRIGHT International Business Machines Corp. 1997, 1999
* RMI-IIOP v1.0
*
*/
package com.sun.tools.corba.se.idl;
// NOTES:
// -D56351<daz> Update computation of RepositoryIDs to CORBA 2.3 (see spec.).
// -D58319<daz> Display version info. for -version option.
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import com.sun.tools.corba.se.idl.constExpr.ExprFactory;
import com.sun.tools.corba.se.idl.constExpr.DefaultExprFactory;
/**
* Compiler usage:
* <br>
*
* java com.sun.tools.corba.se.idl.toJava.compile [options] <idl file>
* <br>
*
* where <idl file> is the name of a file containing IDL definitions,
* and [options] is any combination of the options listed below. The options
* and the idl file name can appear in any order.
* <br>
*
* Options:
* <dl>
* <dt>-i <include path>
* <dd>By default, the current directory is scanned for included files.
* This option adds another directory. See also Note 1 below.
*
* <dt>-d <symbol>
* <dd>This is equivalent to the following line in an IDL file: #define <symbol>
*
* <dt>-emitAll
* <dd>Emit all types, including those found in #included files.
*
* <dt>-v
* <dd>Verbose mode.
* </dl>
*
* Note 1: If you have an include path or paths that you will always be using,
* it can get tedious putting these on the command with the -i option all the
* time. Instead, these can be placed into a config file called idl.config.
* This file must be in the CLASSPATH. The format of the includes line is:
*
* <pre>
* includes=<path1>;;...;
* </pre>
*
* Note that the path separator character, here shown as a semicolon, is
* machine dependent. For instance, on Windows 95 this character is a
* semicolon, on UNIX it is a colon.
*
* <p>
* Note 2: If you are directly invoking the main method on this class (not
* a subclass), then it will only check that the IDL file is syntactically
* correct. It does not generate any files. Only extensions to this
* framework generate files, therefore an extension must be invoked if you
* want files to be generated.
* <br>
*
* To Extend the compiler:
* <br>
*
* You only need to extend the compiler if you want it to generate something
* other than what it currently generates.
* <br>
*
* Step 1 - Implement the generator interfaces:
* <br>
*
* Each generator interface defines one method: generate (Hashtable, XXXEntry, PrintWriter);
* <br>
* - The Hashtable is the symbol table; each element is a SymtabEntry (or a
* subclass of SymtabEntry) and is keyed by its fully qualified name;
* <br>
* - XXXEntry is the appropriate entry for the type to be generated. For
* example: AttributeGen defines generate (Hashtable, AttributeEntry, PrintWriter);
* ConstGen defines generate (Hashtable, ConstEntry, PrintWriter); etc.
* <br>
* - The PrintWriter is a stream to the file being generated. For the
* generators called by the compiler framework, this will be null. The
* generator is responsible for creating and opening files. But for
* generators that are called by other generators - for instance,
* MethodGen.generate will most likely be called by InterfaceGen.generate -
* this parameter is provided so that the proper file can be written to.
* <br>
*
* Step 2 - Implement the GenFactory interface:
* <br>
*
* All of the generators implemented in Step 1 must be created somehow. There
* is an interface for a factory, GenFactory, which must be implemented. The
* name of this factory must be set in the extension to the Compile class (see
* Step 3, below).
* <br>
*
* Step 3 - Extend com.sun.tools.corba.se.idl.Factories:
* <br>
*
* Extend com.sun.tools.corba.se.idl.Factories and override the method genFactory. This
* method must return an instance of the factory which you implemented in
* step 2. Your extension of this class may also do more, this is only the
* minimum. See com.sun.tools.corba.se.idl.Factories for more information.
* <br>
*
* Step 4 - Extend com.sun.tools.corba.se.idl.Compile:
* <br>
*
* Your extension of com.sun.tools.corba.se.idl.Compile should contain a minimum of
* two methods:
* <dl>
* <dt>protected com.sun.tools.corba.se.idl.Factories ()
* <dd>This method overrides com.sun.tools.corba.se.idl.Compile.factories and returns your
* extension from Step 3.
*
* <dt>public static void main (String[] args)
* <dd>This main method must instantiate this class and call its start method.
* </dl>
*
* Given that the extension of Factories is MyFactories, the extension of
* Compile could be:
*
* <pre>
* public class MyCompile extends com.sun.tools.corba.se.idl.Compile
* {
* protected com.sun.tools.corba.se.idl.Factories factories ()
* {
* return new MyFactories ();
* }
* public static void main (String[] args)
* {
* MyCompile compile = new MyCompile ();
* compile.start (args);
* }
* }
* </pre>
*
* If you would like a bit more control over the processing of the framework,
* you can replace compile.start with what it calls. But then you also have
* to handle the exceptions which start handles for you:
* <pre>
* public class MyCompile extends com.sun.tools.corba.se.idl.Compile
* {
* ...
*
* public static void main (String[] args)
* {
* MyCompile compile = new MyCompile ();
* try
* {
* compile.init (args);
* java.util.Enumeration emitList = compile.parse ();
* compile.generate ();
* }
* catch (com.sun.tools.corba.se.idl.InvalidArgument e)
* {
* System.err.println (e);
* }
* catch (java.io.IOException e)
* {
* System.err.println (e);
* }
* }
* }
* </pre>
*
* Note that compile.parse returns an enumeration. This enumerates the
* SymtabEntry's which should be generated. If the parse method detects
* errors, it returns null. Note that you do not have to check that
* `emitList' is valid before calling generate (that's done internally), but
* if you do any processing between parse and generate, emitList should be
* checked before executing that code.
* <br>
**/
public class Compile
{
public Compile ()
{
noPragma.init (preprocessor);
preprocessor.registerPragma (noPragma);
// <d41197> Reset static variables to allow parsing multiple sources.
// DO NOT reset SymtabEntry.maxKey because it crashes IDLC.
ParseException.detected = false;
SymtabEntry.includeStack = new java.util.Stack ();
SymtabEntry.setEmit = true;
//SymtabEntry.maxKey = -1;
Parser.repIDStack = new java.util.Stack (); // <d56351>
} // ctor
public static void main (String[] args)
{
(new Compile ()).start (args);
} // main
protected Factories factories ()
{
return new Factories ();
} // genFactoryName
protected void registerPragma (PragmaHandler handler)
{
handler.init (preprocessor);
preprocessor.registerPragma (handler);
} // registerPragma
/**
* Initialize the framework.
**/
protected void init (String[] args) throws InvalidArgument
{
initFactories ();
arguments.parseArgs (args);
initGenerators ();
parser = new Parser (preprocessor, arguments, overrideNames, symbolTable, symtabFactory, exprFactory, keywords);
preprocessor.init (parser);
parser.includes = includes;
parser.includeEntries = includeEntries;
} // init
/**
* Parse the IDL file and return an enumeration of the symbols to be
* generated. All elements of the Enumeration will be extensions of
* SymtabEntry. If any errors were encountered during parsing, null
* will be returned.
**/
protected Enumeration parse () throws IOException
{
if (arguments.verbose)
System.out.println (Util.getMessage ("Compile.parsing", arguments.file));
parser.parse (arguments.file);
if ( !ParseException.detected )
{
parser.forwardEntryCheck();
// <46082.03> Revert to "IDL:"-style (i.e., regular) repository ID.
//parser.updateRepositoryIds();
}
if (arguments.verbose)
System.out.println (Util.getMessage ("Compile.parseDone", arguments.file));
if (ParseException.detected)
{
symbolTable = null;
emitList = null;
}
else
{
symbolTable = parser.symbolTable;
emitList = parser.emitList.elements ();
}
return emitList;
} // parse
/**
* Invoke the generators.
**/
protected void generate () throws IOException
{
/*
// print the symbol table
Enumeration v = parser.symbolTable.elements ();
Enumeration k = parser.symbolTable.keys ();
while (k.hasMoreElements ())
System.out.println (k.nextElement () + ": " + v.nextElement ());
*/
if (ParseException.detected)
emitList = null;
else
emitList = parser.emitList.elements ();
if (emitList != null)
{
// Emit the output files for all of the types in the IDL file
if (arguments.verbose)
System.out.println ();
while (emitList.hasMoreElements ())
{
SymtabEntry entry = (SymtabEntry)emitList.nextElement ();
if (arguments.verbose)
if (entry.generator () instanceof Noop)
; // Nothing will be generated, so don't say so.
else if (entry.module () . equals (""))
System.out.println (Util.getMessage ("Compile.generating", entry.name ()));
else
System.out.println (Util.getMessage ("Compile.generating", entry.module () + '/' + entry.name ()));
entry.generate (symbolTable, null);
if (arguments.verbose)
if (entry.generator () instanceof Noop)
; // Nothing will be generated, so don't say so.
else if (entry.module () . equals (""))
System.out.println (Util.getMessage ("Compile.genDone", entry.name ()));
else
System.out.println (Util.getMessage ("Compile.genDone", entry.module () + '/' + entry.name ()));
}
}
} // generate
/**
* Start the parse/code generation process. This method calls init,
* parse, generate. If more control is desired, rather than call start,
* those three methods could be called explicitly.
**/
public void start (String[] args)
{
try
{
init (args);
if (arguments.versionRequest) // <d59319>
displayVersion ();
else
{
parse ();
generate ();
}
}
catch (InvalidArgument e)
{
System.err.println (e);
}
catch (IOException e)
{
System.err.println (e);
}
} // start
private void initFactories ()
{
// Get the factories.
Factories factories = factories ();
if (factories == null) factories = new Factories ();
// Get the argument processor from the factories.
Arguments tmpArgs = factories.arguments ();
if (tmpArgs == null)
arguments = new Arguments ();
else
arguments = tmpArgs;
// Get the symbol table entry factory from the factories.
SymtabFactory tmpSTF = factories.symtabFactory ();
if (tmpSTF == null)
symtabFactory = new DefaultSymtabFactory ();
else
symtabFactory = tmpSTF;
// Get the expression factory from the factories.
ExprFactory tmpExpF = factories.exprFactory ();
if (tmpExpF == null)
exprFactory = new DefaultExprFactory ();
else
exprFactory = tmpExpF;
// Get the generator factory from the factories.
GenFactory tmpGenF = factories.genFactory ();
if (tmpGenF == null)
genFactory = noop;
else
genFactory = tmpGenF;
// Get the language keywords.
keywords = factories.languageKeywords ();
if (keywords == null)
keywords = new String[0];
} // initFactories
private void initGenerators ()
{
AttributeGen agen = genFactory.createAttributeGen ();
AttributeEntry.attributeGen = agen == null ? noop : agen;
ConstGen cgen = genFactory.createConstGen ();
ConstEntry.constGen = cgen == null ? noop : cgen;
EnumGen egen = genFactory.createEnumGen ();
EnumEntry.enumGen = egen == null ? noop : egen;
ExceptionGen exgen = genFactory.createExceptionGen ();
ExceptionEntry.exceptionGen = exgen == null ? noop : exgen;
ForwardGen fgen = genFactory.createForwardGen ();
ForwardEntry.forwardGen = fgen == null ? noop : fgen;
ForwardValueGen fvgen = genFactory.createForwardValueGen ();
ForwardValueEntry.forwardValueGen = fvgen == null ? noop : fvgen;
IncludeGen ingen = genFactory.createIncludeGen ();
IncludeEntry.includeGen = ingen == null ? noop : ingen;
InterfaceGen igen = genFactory.createInterfaceGen ();
InterfaceEntry.interfaceGen = igen == null ? noop : igen;
ValueGen vgen = genFactory.createValueGen ();
ValueEntry.valueGen = vgen == null ? noop : vgen;
ValueBoxGen vbgen = genFactory.createValueBoxGen ();
ValueBoxEntry.valueBoxGen = vbgen == null ? noop : vbgen;
MethodGen mgen = genFactory.createMethodGen ();
MethodEntry.methodGen = mgen == null ? noop : mgen;
ModuleGen modgen = genFactory.createModuleGen ();
ModuleEntry.moduleGen = modgen == null ? noop : modgen;
NativeGen ngen = genFactory.createNativeGen ();
NativeEntry.nativeGen = ngen == null ? noop : ngen;
ParameterGen pgen = genFactory.createParameterGen ();
ParameterEntry.parameterGen = pgen == null ? noop : pgen;
PragmaGen prgen = genFactory.createPragmaGen ();
PragmaEntry.pragmaGen = prgen == null ? noop : prgen;
PrimitiveGen primgen = genFactory.createPrimitiveGen ();
PrimitiveEntry.primitiveGen = primgen == null ? noop : primgen;
SequenceGen seqgen = genFactory.createSequenceGen ();
SequenceEntry.sequenceGen = seqgen == null ? noop : seqgen;
StringGen strgen = genFactory.createStringGen ();
StringEntry.stringGen = strgen == null ? noop : strgen;
StructGen sgen = genFactory.createStructGen ();
StructEntry.structGen = sgen == null ? noop : sgen;
TypedefGen tgen = genFactory.createTypedefGen ();
TypedefEntry.typedefGen = tgen == null ? noop : tgen;
UnionGen ugen = genFactory.createUnionGen ();
UnionEntry.unionGen = ugen == null ? noop : ugen;
} // initGenerators
/**
* Write the version number of this compiler to standard out.
**/
protected void displayVersion ()
{
String message = Util.getMessage ("Version.product", Util.getMessage ("Version.number"));
System.out.println (message);
}
/**
* This is the repository of emitter arguments.
**/
public Arguments arguments = null;
/**
* This hashtable contains <real name, alias> pairs. It is filled in by
* extenders in cases where they wish to override an IDL type name with
* some other name. For instance, when mapping to Java, there could be
* an overrideNames entry of <"TRUE", "true">. NOTE: Do NOT change this
* variable to a new Hash table. Just add elements to it.
**/
protected Hashtable overrideNames = new Hashtable ();
/**
* This is the symbol table. It will be empty until the parse method
* executes. If errors are encountered, the state of the symbol table
* is undefined.
**/
protected Hashtable symbolTable = new Hashtable ();
/**
* This is a vector of strings of the form "IDLfile" or <IDLfile>. It is
* a list of the files included in the given IDL file. It will be empty
* until the parse method executes. If errors are encountered, the state
* of this vector is undefined.
**/
protected Vector includes = new Vector ();
/**
* This is a vector of IncludeEntry's. It is a list of the files included
* in the given IDL file. It mirrors the includes vector. It will be empty
* until the parse method executes. If errors are encountered, the state of
* this vector is undefined.
**/
protected Vector includeEntries = new Vector ();
static Noop noop = new Noop ();
private GenFactory genFactory = null;
private SymtabFactory symtabFactory = null;
private ExprFactory exprFactory = null;
private Parser parser = null;
Preprocessor preprocessor = new Preprocessor ();
private NoPragma noPragma = new NoPragma ();
private Enumeration emitList = null;
private String[] keywords = null;
} // class Compile
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