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182 lines (170 loc) · 6.28 KB
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape 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 http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1997-1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Mike McCabe
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License (the "GPL"), in which case the
* provisions of the GPL are applicable instead of those above.
* If you wish to allow use of your version of this file only
* under the terms of the GPL and not to allow others to use your
* version of this file under the NPL, indicate your decision by
* deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the NPL or the GPL.
*/
/*
* A quick and dirty driver for testing and timing the scanner, parser
* and optimizer.
*/
package org.mozilla.javascript;
import java.io.*;
import java.lang.reflect.*;
class TestScan
{
public static void main(String[] args) throws IOException {
String file = null;
String opt = "nt";
int level = 0;
if (args.length == 1) {
file = args[0];
opt = "-nt";
}
else if (args.length == 2) {
file = args[1];
opt = args[0];
}
else if (args.length == 3 && args[0].equals("-opt")) {
level = Integer.parseInt(args[1]);
file = args[2];
opt = "-opt";
}
else if (args.length > 1 && args[0].equals("-compile")) {
opt = "-compile";
if (args.length == 3) {
file = args[2];
level = Integer.parseInt(args[1]);
} else if (args.length == 2) {
file = args[1];
} else {
usage();
System.exit(1);
}
}
else {
usage();
System.exit(1);
}
scan(opt, file, level);
}
public static void scan(String opt, String file, int level)
throws IOException
{
FileReader in = null;
// We might call scan from js, and so might not get an interned string.
opt = opt.intern();
try {
in = new FileReader(file);
}
catch (FileNotFoundException ex) {
System.out.println("couldn't open file " + file);
System.exit(1);
}
Context cx = new Context();
try {
cx.enter();
}
catch (Throwable t) {
}
if (opt == "-compile") {
cx.setOptimizationLevel(level);
cx.compileReader(null, in, file, 1, null);
return;
}
TokenStream ts = new TokenStream(in, null, file, 1);
if (opt == "-scan") {
int foo;
while ((foo = ts.getToken()) != ts.EOF) {
if (Context.printTrees)
System.out.println(ts.tokenToString(foo));
}
}
else if (opt == "-ir") {
IRFactory nf = new IRFactory(ts, null);
Parser p = new Parser(nf);
Node parsetree = (Node) p.parse(ts);
System.out.print(parsetree.toStringTree());
}
else if (opt == "-nt") {
IRFactory nf = new IRFactory(ts, null);
NodeTransformer nt = new NodeTransformer();
Parser p = new Parser(nf);
Node parsetree = (Node) p.parse(ts);
nt.transform(parsetree, null, ts, null);
System.out.print(parsetree.toStringTree());
}
else if (opt == "-opt") {
IRFactory nf = new IRFactory(ts, null);
NodeTransformer nt = new NodeTransformer();
Parser p = new Parser(nf);
Node parsetree = (Node) p.parse(ts);
nt.transform(parsetree, null, ts, null);
cx.setOptimizationLevel(level);
try {
Class optimizerClass
= Class.forName("org.mozilla.javascript.optimizer.Optimizer");
Object theOptimizer = optimizerClass.newInstance();
Class parameterTypes[] = { Node.class, Integer.class };
Method runOptimizer =
optimizerClass.getDeclaredMethod("optimize", parameterTypes);
Object a[] = { parsetree, new Integer(level) };
runOptimizer.invoke(theOptimizer, a);
System.out.print(parsetree.toStringTree());
}
catch (Exception x) {
System.out.println(x);
}
}
else {
usage();
return;
}
}
static void usage() {
System.err.println("usage: TestScan " +
"[-compile [level] | -scan | -ir | -nt | -opt " +
"[level] ] filename.js");
System.err.println("\t-compile [level] " +
"- compile the given file and return, for profiling");
System.err.println("\t-scan " +
"- list tokens");
System.err.println("\t-ir " +
"- print Internal Representation parse tree");
System.err.println("\t-nt " +
"- print NodeTransformed IR tree");
System.err.println("\t-opt [level] " +
"- print transformed and optimized IR tree");
System.err.println();
System.err.println("(note that nothing may be printed by the above if " +
"Context.printTrees is false.)");
}
}