root/utils/abcasm/src/abcasm/Main.java

DEFINITIONS

1. main
2. assemble

/* -*- Mode: Java; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4 -*- */
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is [Open Source Virtual Machine.].
 *
 * The Initial Developer of the Original Code is
 * Adobe System Incorporated.
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 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Adobe AS3 Team
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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package abcasm;

import org.antlr.runtime.*;


import java.io.FileInputStream;

public class Main
{

        public static void main(String[] argv)
                throws Exception
        {
                AssemblerOptions options = new AssemblerOptions(argv);
                
                for ( String asmFile: options.asmFile )
                {
                        assemble(asmFile, options);
                }
        }

        public static void assemble(String asmFile, AssemblerOptions options)
                throws Exception
        {
                if ( options.verbose )
                        System.out.println("assembling " + asmFile );
                
                abcasmLexer lexer = new abcasmLexer(new ANTLRFileStream(asmFile));
                
                CommonTokenStream tokens = new CommonTokenStream();
                tokens.setTokenSource(lexer);
                abcasmParser parser = new abcasmParser(tokens);

                AssemblerCore core = new AssemblerCore(options);
                parser.asmCore = core;

                try
                {
                        parser.translation_unit();
                }
                catch ( Throwable parser_fatal )
                {
                        if ( options.expandedDiagnostics )
                                parser_fatal.printStackTrace();
                        core.syntaxErrors.add(parser_fatal.getMessage());
                }

                if ( core.syntaxErrors.size() > 0 )
                {
                        System.err.println("Unable to assemble " + asmFile + " due to syntax errors:");
                        for ( String s: core.syntaxErrors )
                        {
                                System.err.println(s);
                        }

                        return;
                }
                
                if ( options.dumpIl )
                        core.dump(System.out);
                
                
                //  Parsing successful, do the results make sense?
                core.semanticAnalysis();
                
                if ( core.semanticErrors.size() > 0 )
                {
                        System.err.println("Unable to assemble " + asmFile + " due to:");

                        for ( String s: core.semanticErrors )
                        {
                                System.err.println(s);
                        }

                        return;
                }
                
                //  Emit the bytecode.
                try
                {
                        String binary_file_name;
                        int last_dot = asmFile.lastIndexOf(".");
                        
                        if ( last_dot == (asmFile.length() - 4) && asmFile.substring(last_dot).equalsIgnoreCase(".abs") )
                                binary_file_name = asmFile.substring(0, last_dot) + ".abc";
                        else
                                binary_file_name = asmFile + ".abc";
                        
                        byte[] abc_binary = new AbcEmitter(core).emit();
                        java.io.OutputStream output = new java.io.FileOutputStream(binary_file_name);
                        output.write(abc_binary);
                }
                catch ( Exception ex )
                {
                        System.err.println("Unable to emit due to: ");
                        ex.printStackTrace();
                        System.exit(1);
                }
        }
}