reflex.ReflexExecutor Maven / Gradle / Ivy
/**
* The MIT License (MIT)
*
* Copyright (c) 2011-2016 Incapture Technologies LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package reflex;
import java.util.HashMap;
import java.util.Map;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CharStream;
import org.antlr.runtime.CommonToken;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.IntStream;
import org.antlr.runtime.RecognitionException;
import org.antlr.runtime.TokenStream;
import org.antlr.runtime.tree.CommonTree;
import org.antlr.runtime.tree.CommonTreeNodeStream;
import rapture.common.client.ScriptClient;
import reflex.debug.IReflexDebugger;
import reflex.debug.NullDebugger;
import reflex.node.ReflexNode;
import reflex.util.function.LanguageRegistry;
import reflex.value.ReflexValue;
import reflex.value.internal.ReflexNullValue;
public class ReflexExecutor {
public static Object evalReflexProgram(String program, LanguageRegistry languageRegistry, IReflexHandler handler, Scope currentScope,
IReflexDebugger iReflexDebugger) {
ReflexLexer lexer = new ReflexLexer();
iReflexDebugger.setProgram(program);
if (handler != null && handler.getScriptHandler() != null) {
lexer.dataHandler = handler.getScriptHandler();
}
lexer.setCharStream(new ANTLRStringStream(program));
CommonTokenStream tokens = new CommonTokenStream(lexer);
ReflexParser parser = new ReflexParser(tokens);
CommonTree tree;
try {
tree = (CommonTree) parser.parse().getTree();
CommonTreeNodeStream nodes = new CommonTreeNodeStream(tree);
ReflexTreeWalker walker = new ReflexTreeWalker(nodes, languageRegistry);
if (handler != null) {
walker.setReflexHandler(handler);
}
walker.currentScope = currentScope;
ReflexNode returned = walker.walk();
ReflexValue val = returned.evaluateWithoutScope(iReflexDebugger);
return val.asObject();
} catch (ReflexParseException e) {
throw e;
} catch (RecognitionException e) {
throw new ReflexException(-1, getParserExceptionDetails(e), e); //$NON-NLS-1$
} catch (ReflexException e) {
throw e;
}
}
public static void parseReflexProgram(String program) {
parseReflexProgram(program, null);
}
public static void parseReflexProgram(String program, IReflexScriptHandler scriptHandler) {
ReflexLexer lexer = new ReflexLexer();
if (scriptHandler != null) {
lexer.dataHandler = scriptHandler;
}
lexer.setCharStream(new ANTLRStringStream(program));
CommonTokenStream tokens = new CommonTokenStream(lexer);
ReflexParser parser = new ReflexParser(tokens);
try {
parser.parse().getTree();
} catch (ReflexParseException e) {
throw e;
} catch (RecognitionException e) {
throw new ReflexException(-1, getParserExceptionDetails(e), e); //$NON-NLS-1$
} catch (ReflexException e) {
throw e;
}
}
public static IReflexHandler getStandardClientHandler(ScriptClient api) {
return new StandardReflexHandler(api);
}
public static Object runReflexProgram(String program) {
return runReflexProgram(program, null, null);
}
public static Object runReflexProgram(String program, IReflexHandler handler, Map injectedVars) {
return runReflexProgram(program, handler, injectedVars, new NullDebugger());
}
public static ReflexTreeWalker getWalkerForProgramWithRegistry(LanguageRegistry savedRegistry, String program, IReflexHandler handler) {
ReflexLexer lexer = new ReflexLexer();
if (handler != null && handler.getScriptHandler() != null) {
lexer.dataHandler = handler.getScriptHandler();
}
lexer.setCharStream(new ANTLRStringStream(program));
CommonTokenStream tokens = new CommonTokenStream(lexer);
ReflexParser parser = new ReflexParser(tokens);
CommonTree tree;
try {
tree = (CommonTree) parser.parse().getTree();
CommonTreeNodeStream nodes = new CommonTreeNodeStream(tree);
parser.languageRegistry.merge(savedRegistry);
ReflexTreeWalker walker = new ReflexTreeWalker(nodes, parser.languageRegistry);
return walker;
} catch (ReflexParseException e) {
throw e;
} catch (RecognitionException e) {
throw new ReflexException(-1, getParserExceptionDetails(e), e); //$NON-NLS-1$
} catch (ReflexException e) {
throw e;
}
}
public static ReflexTreeWalker getWalkerForProgram(String program, IReflexHandler handler) {
ReflexLexer lexer = new ReflexLexer();
if (handler != null && handler.getScriptHandler() != null) {
lexer.dataHandler = handler.getScriptHandler();
}
lexer.setCharStream(new ANTLRStringStream(program));
CommonTokenStream tokens = new CommonTokenStream(lexer);
ReflexParser parser = new ReflexParser(tokens);
CommonTree tree;
try {
tree = (CommonTree) parser.parse().getTree();
CommonTreeNodeStream nodes = new CommonTreeNodeStream(tree);
ReflexTreeWalker walker = new ReflexTreeWalker(nodes, parser.languageRegistry);
return walker;
} catch (ReflexParseException e) {
throw e;
} catch (RecognitionException e) {
throw new ReflexException(e.line, getParserExceptionDetails(e), e); //$NON-NLS-1$
} catch (ReflexException e) {
throw e;
}
}
public static Object runReflexWalker(IReflexHandler handler, IReflexDebugger iReflexDebugger, ReflexTreeWalker walker, Map injectedVars) {
try {
if (handler != null) {
walker.setReflexHandler(handler);
}
if (injectedVars != null && !injectedVars.isEmpty()) {
for (Map.Entry kv : injectedVars.entrySet()) {
Scope s = walker.currentScope;
s.getGlobalScope().assign(kv.getKey(), kv.getValue() == null ? new ReflexNullValue() : new ReflexValue(kv.getValue()));
}
}
ReflexNode returned = walker.walk();
ReflexValue val = returned.evaluateWithoutScope(iReflexDebugger);
return val.asObject();
} catch (ReflexParseException e) {
throw e;
} catch (RecognitionException e) {
throw new ReflexException(e.line, getParserExceptionDetails(e), e); //$NON-NLS-1$
} catch (ReflexException e) {
throw e;
}
}
public static String getParserExceptionDetails(RecognitionException e) {
return ErrorHandler.getParserExceptionDetails(e);
}
public static Object runReflexProgram(String program, IReflexHandler handler, Map injectedVars, IReflexDebugger iReflexDebugger) {
ReflexLexer lexer = new ReflexLexer();
iReflexDebugger.setProgram(program);
if (handler != null && handler.getScriptHandler() != null) {
lexer.dataHandler = handler.getScriptHandler();
}
lexer.setCharStream(new ANTLRStringStream(program));
CommonTokenStream tokens = new CommonTokenStream(lexer);
ReflexParser parser = new ReflexParser(tokens);
CommonTree tree;
try {
tree = (CommonTree) parser.parse().getTree();
CommonTreeNodeStream nodes = new CommonTreeNodeStream(tree);
iReflexDebugger.setRegistry(parser.languageRegistry);
ReflexTreeWalker walker = new ReflexTreeWalker(nodes, parser.languageRegistry);
if (handler != null) {
walker.setReflexHandler(handler);
}
if (injectedVars != null && !injectedVars.isEmpty()) {
for (Map.Entry kv : injectedVars.entrySet()) {
walker.currentScope.assign(kv.getKey(), kv.getValue() == null ? new ReflexNullValue() : new ReflexValue(kv.getValue()));
}
}
injectSystemIntoScope(walker.currentScope);
ReflexNode returned = walker.walk();
ReflexValue val = returned.evaluateWithoutScope(iReflexDebugger);
if (val.getValue() == ReflexValue.Internal.SUSPEND) {
boolean finished = false;
while (!finished) {
try {
Thread.sleep(walker.getReflexHandler().getSuspendHandler().getSuspendTime() * 1000);
ReflexValue newRet = returned.evaluateWithResume(iReflexDebugger, returned.getScope());
if (newRet.getValue() != ReflexValue.Internal.SUSPEND) {
val = newRet;
finished = true;
break;
}
} catch (Exception e) {
}
}
}
return val.asObject();
} catch (ReflexParseException e) {
throw e;
} catch (RecognitionException e) {
throw new ReflexException(-1, getParserExceptionDetails(e), e); //$NON-NLS-1$
} catch (ReflexException e) {
throw e;
}
}
public static void injectSystemIntoScope(Scope currentScope) {
// Inject a ENV and PROPS variable into the scope, showing the
// environment and System properties
Map envVar = new HashMap();
for (Map.Entry envEntry : System.getenv().entrySet()) {
envVar.put(envEntry.getKey(), envEntry.getValue());
}
currentScope.assign("ENV", new ReflexValue(envVar)); //$NON-NLS-1$
Map propVar = new HashMap();
for (Map.Entry propEntry : System.getProperties().entrySet()) {
propVar.put(propEntry.getKey().toString(), propEntry.getValue());
}
currentScope.assign("PROPS", new ReflexValue(propVar)); //$NON-NLS-1$
}
}
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