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September 24, 2014 15:15
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A version of ANTLR4 TestRig that support packages
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/* | |
* [The "BSD license"] | |
* Copyright (c) 2012 Terence Parr | |
* Copyright (c) 2012 Sam Harwell | |
* 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 org.antlr.v4.runtime.misc; | |
import java.io.FileInputStream; | |
import java.io.IOException; | |
import java.io.InputStream; | |
import java.io.InputStreamReader; | |
import java.io.Reader; | |
import java.lang.reflect.Constructor; | |
import java.lang.reflect.InvocationTargetException; | |
import java.lang.reflect.Method; | |
import java.util.ArrayList; | |
import java.util.List; | |
import javax.print.PrintException; | |
import org.antlr.v4.runtime.ANTLRInputStream; | |
import org.antlr.v4.runtime.CharStream; | |
import org.antlr.v4.runtime.CommonTokenStream; | |
import org.antlr.v4.runtime.DiagnosticErrorListener; | |
import org.antlr.v4.runtime.Lexer; | |
import org.antlr.v4.runtime.Parser; | |
import org.antlr.v4.runtime.ParserRuleContext; | |
import org.antlr.v4.runtime.TokenStream; | |
import org.antlr.v4.runtime.atn.PredictionMode; | |
/** Run a lexer/parser combo, optionally printing tree string or generating | |
* postscript file. Optionally taking input file. | |
* | |
* $ java org.antlr.v4.runtime.misc.TestRig GrammarName startRuleName | |
* [-tree] | |
* [-tokens] [-gui] [-ps file.ps] | |
* [-trace] | |
* [-diagnostics] | |
* [-SLL] | |
* [input-filename(s)] | |
*/ | |
public class TestRig2 { | |
public static final String LEXER_START_RULE_NAME = "tokens"; | |
protected String grammarName; | |
protected String startRuleName; | |
protected final List<String> inputFiles = new ArrayList<String>(); | |
protected boolean printTree = false; | |
protected boolean gui = false; | |
protected String psFile = null; | |
protected boolean showTokens = false; | |
protected boolean trace = false; | |
protected boolean diagnostics = false; | |
protected String encoding = null; | |
protected boolean SLL = false; | |
protected String packageName = null; | |
public TestRig2(String[] args) throws Exception { | |
if ( args.length < 2 ) { | |
System.err.println("java org.antlr.v4.runtime.misc.TestRig GrammarName startRuleName\n" + | |
" [-tokens] [-tree] [-gui] [-ps file.ps] [-encoding encodingname]\n" + | |
" [-package packagename] [-trace] [-diagnostics] [-SLL]\n"+ | |
" [input-filename(s)]"); | |
System.err.println("Use startRuleName='tokens' if GrammarName is a lexer grammar."); | |
System.err.println("Omitting input-filename makes rig read from stdin."); | |
return; | |
} | |
int i=0; | |
grammarName = args[i]; | |
i++; | |
startRuleName = args[i]; | |
i++; | |
while ( i<args.length ) { | |
String arg = args[i]; | |
i++; | |
if ( arg.charAt(0)!='-' ) { // input file name | |
inputFiles.add(arg); | |
continue; | |
} | |
if ( arg.equals("-tree") ) { | |
printTree = true; | |
} | |
if ( arg.equals("-gui") ) { | |
gui = true; | |
} | |
if ( arg.equals("-tokens") ) { | |
showTokens = true; | |
} | |
else if ( arg.equals("-trace") ) { | |
trace = true; | |
} | |
else if ( arg.equals("-SLL") ) { | |
SLL = true; | |
} | |
else if ( arg.equals("-diagnostics") ) { | |
diagnostics = true; | |
} | |
else if ( arg.equals("-encoding") ) { | |
if ( i>=args.length ) { | |
System.err.println("missing encoding on -encoding"); | |
return; | |
} | |
encoding = args[i]; | |
i++; | |
} | |
else if ( arg.equals("-package") ) { | |
if ( i>=args.length ) { | |
System.err.println("missing package on -package"); | |
return; | |
} | |
packageName = args[i]; | |
i++; | |
} | |
else if ( arg.equals("-ps") ) { | |
if ( i>=args.length ) { | |
System.err.println("missing filename on -ps"); | |
return; | |
} | |
psFile = args[i]; | |
i++; | |
} | |
} | |
} | |
public static void main(String[] args) throws Exception { | |
TestRig2 testRig = new TestRig2(args); | |
if(args.length >= 2) { | |
testRig.process(); | |
} | |
} | |
public void process() throws Exception { | |
// System.out.println("exec "+grammarName+"."+startRuleName); | |
String lexerName = (packageName == null ? "" : (packageName + ".")) + grammarName+"Lexer"; | |
ClassLoader cl = Thread.currentThread().getContextClassLoader(); | |
Class<? extends Lexer> lexerClass = null; | |
try { | |
lexerClass = cl.loadClass(lexerName).asSubclass(Lexer.class); | |
} | |
catch (java.lang.ClassNotFoundException cnfe) { | |
// might be pure lexer grammar; no Lexer suffix then | |
lexerName = grammarName; | |
try { | |
lexerClass = cl.loadClass(lexerName).asSubclass(Lexer.class); | |
} | |
catch (ClassNotFoundException cnfe2) { | |
System.err.println("Can't load "+lexerName+" as lexer or parser"); | |
return; | |
} | |
} | |
Constructor<? extends Lexer> lexerCtor = lexerClass.getConstructor(CharStream.class); | |
Lexer lexer = lexerCtor.newInstance((CharStream)null); | |
Class<? extends Parser> parserClass = null; | |
Parser parser = null; | |
if ( !startRuleName.equals(LEXER_START_RULE_NAME) ) { | |
String parserName = (packageName == null ? "" : (packageName + ".")) + grammarName+"Parser"; | |
parserClass = cl.loadClass(parserName).asSubclass(Parser.class); | |
if ( parserClass==null ) { | |
System.err.println("Can't load "+parserName); | |
} | |
Constructor<? extends Parser> parserCtor = parserClass.getConstructor(TokenStream.class); | |
parser = parserCtor.newInstance((TokenStream)null); | |
} | |
if ( inputFiles.size()==0 ) { | |
InputStream is = System.in; | |
Reader r; | |
if ( encoding!=null ) { | |
r = new InputStreamReader(is, encoding); | |
} | |
else { | |
r = new InputStreamReader(is); | |
} | |
process(lexer, parserClass, parser, is, r); | |
return; | |
} | |
for (String inputFile : inputFiles) { | |
InputStream is = System.in; | |
if ( inputFile!=null ) { | |
is = new FileInputStream(inputFile); | |
} | |
Reader r; | |
if ( encoding!=null ) { | |
r = new InputStreamReader(is, encoding); | |
} | |
else { | |
r = new InputStreamReader(is); | |
} | |
if ( inputFiles.size()>1 ) { | |
System.err.println(inputFile); | |
} | |
process(lexer, parserClass, parser, is, r); | |
} | |
} | |
protected void process(Lexer lexer, Class<? extends Parser> parserClass, Parser parser, InputStream is, Reader r) throws IOException, IllegalAccessException, InvocationTargetException, PrintException { | |
try { | |
ANTLRInputStream input = new ANTLRInputStream(r); | |
lexer.setInputStream(input); | |
CommonTokenStream tokens = new CommonTokenStream(lexer); | |
tokens.fill(); | |
if ( showTokens ) { | |
for (Object tok : tokens.getTokens()) { | |
System.out.println(tok); | |
} | |
} | |
if ( startRuleName.equals(LEXER_START_RULE_NAME) ) return; | |
if ( diagnostics ) { | |
parser.addErrorListener(new DiagnosticErrorListener()); | |
parser.getInterpreter().setPredictionMode(PredictionMode.LL_EXACT_AMBIG_DETECTION); | |
} | |
if ( printTree || gui || psFile!=null ) { | |
parser.setBuildParseTree(true); | |
} | |
if ( SLL ) { // overrides diagnostics | |
parser.getInterpreter().setPredictionMode(PredictionMode.SLL); | |
} | |
parser.setTokenStream(tokens); | |
parser.setTrace(trace); | |
try { | |
Method startRule = parserClass.getMethod(startRuleName); | |
ParserRuleContext tree = (ParserRuleContext)startRule.invoke(parser, (Object[])null); | |
if ( printTree ) { | |
System.out.println(tree.toStringTree(parser)); | |
} | |
if ( gui ) { | |
tree.inspect(parser); | |
} | |
if ( psFile!=null ) { | |
tree.save(parser, psFile); // Generate postscript | |
} | |
} | |
catch (NoSuchMethodException nsme) { | |
System.err.println("No method for rule "+startRuleName+" or it has arguments"); | |
} | |
} | |
finally { | |
if ( r!=null ) r.close(); | |
if ( is!=null ) is.close(); | |
} | |
} | |
} |
@khoalevan 5 years later i see this comment, sorry about that. My guess is that you've move on with your life :)
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Hi!
I absolutely appreciate your work. I am having the problem with package in TestRig and I found your file. Thank you for that. However, I still can not use TestRig2 perfectly.
When I run:
"java org.antlr.v4.runtime.misc.TestRig2 %* Fletch classDefinition -package Grammar -gui exam.txt"
It give the error:
"Can't load Fletch as lexer or parser"
It seems that it still can't find my grammar my package "Grammar".
I use -package Grammar to generate files from my Fletch.g4 to the package Grammar.
Can you give me any suggestion to solve my solution? Sorry if I annoy you. Waiting for your answer.