carbon.compiler.CarbonCompiler.java Source code

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Here is the source code for carbon.compiler.CarbonCompiler.java

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/*
 * [The "BSD license"]
 * Copyright (c) 2014 Takumi Bolte, Dan Welch
 * 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. The name of the author may not be used to endorse or promote products
 * derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 carbon.compiler;

import carbon.parsing.CarbonLexer;
import carbon.parsing.CarbonParser;
import carbon.symtab.SymbolTableListener;
import org.antlr.v4.runtime.ANTLRFileStream;
import org.antlr.v4.runtime.CommonTokenStream;
import org.antlr.v4.runtime.tree.ParseTree;
import org.antlr.v4.runtime.tree.ParseTreeWalker;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class CarbonCompiler {

    public static String VERSION = "2.22.15a";

    public final ErrorManager errorManager;
    public final String[] args;

    public boolean helpFlag = false;

    public final DefaultCompilerListener defaultListener = new DefaultCompilerListener(this);

    public final List<String> targetFiles = new ArrayList<String>();

    public CarbonCompiler(String[] args) {
        this.errorManager = new ErrorManager(this);
        this.args = args;
        handleArgs();
    }

    public void handleArgs() {
        for (String arg : args) {
            if (!arg.startsWith("-")) {
                if (!targetFiles.contains(arg)) {
                    targetFiles.add(arg);
                }
            }
        }
    }

    public void processCommandLineTargets() {
        List<ParseTree> targets = getTrees();

        //analysis here.
        ParseTreeWalker.DEFAULT.walk(new SymbolTableListener(), targets.get(0));
    }

    public List<ParseTree> getTrees() {
        List<ParseTree> roots = new ArrayList<ParseTree>();
        for (String fileName : targetFiles) {
            try {
                File file = new File(fileName);
                if (!file.isAbsolute()) {
                    file = new File(System.getProperty("user.dir"), fileName);
                }
                ANTLRFileStream input = new ANTLRFileStream(file.getAbsolutePath());
                CarbonLexer lexer = new CarbonLexer(input);
                CommonTokenStream tokens = new CommonTokenStream(lexer);
                CarbonParser parser = new CarbonParser(tokens);
                roots.add(parser.file());
            } catch (IOException ioe) {
                //errorManager.toolError(ErrorKind.CANNOT_OPEN_FILE, "");
                throw new RuntimeException(ioe);
            }
        }
        return roots;
    }

    public void log(String msg) {
    }

    public static void main(String[] args) {
        CarbonCompiler carbon = new CarbonCompiler(args);

        if (args.length == 0) {
            carbon.help();
            carbon.exit(0);
        }
        carbon.processCommandLineTargets();

        if (carbon.errorManager.getErrorCount() > 0) {
            carbon.exit(1);
        }
    }

    public void help() {
        info("Carbon Compiler Version " + VERSION);
    }

    public void info(String msg) {
        defaultListener.info(msg);
    }

    public void exit(int e) {
        System.exit(e);
    }
}