/*
* [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.codegen.model;
import org.antlr.v4.codegen.ActionTranslator;
import org.antlr.v4.codegen.CodeGenerator;
import org.antlr.v4.codegen.ParserFactory;
import org.antlr.v4.codegen.model.chunk.ActionChunk;
import org.antlr.v4.codegen.model.decl.Decl;
import org.antlr.v4.codegen.model.decl.RuleContextDecl;
import org.antlr.v4.codegen.model.decl.RuleContextListDecl;
import org.antlr.v4.parse.ANTLRParser;
import org.antlr.v4.runtime.atn.RuleTransition;
import org.antlr.v4.runtime.misc.OrderedHashSet;
import org.antlr.v4.tool.Rule;
import org.antlr.v4.tool.ast.ActionAST;
import org.antlr.v4.tool.ast.GrammarAST;
import java.util.List;
/** */
public class InvokeRule extends RuleElement implements LabeledOp {
public String name;
public OrderedHashSet<Decl> labels = new OrderedHashSet<Decl>(); // TODO: should need just 1
public String ctxName;
@ModelElement public List<ActionChunk> argExprsChunks;
public InvokeRule(ParserFactory factory, GrammarAST ast, GrammarAST labelAST) {
super(factory, ast);
if ( ast.atnState!=null ) {
RuleTransition ruleTrans = (RuleTransition)ast.atnState.transition(0);
stateNumber = ast.atnState.stateNumber;
}
this.name = ast.getText();
CodeGenerator gen = factory.getGenerator();
Rule r = factory.getGrammar().getRule(name);
ctxName = gen.getTarget().getRuleFunctionContextStructName(r);
// TODO: move to factory
RuleFunction rf = factory.getCurrentRuleFunction();
if ( labelAST!=null ) {
// for x=r, define <rule-context-type> x and list_x
String label = labelAST.getText();
if ( labelAST.parent.getType() == ANTLRParser.PLUS_ASSIGN ) {
factory.defineImplicitLabel(ast, this);
String listLabel = gen.getTarget().getListLabel(label);
RuleContextListDecl l = new RuleContextListDecl(factory, listLabel, ctxName);
rf.addContextDecl(ast.getAltLabel(), l);
}
else {
RuleContextDecl d = new RuleContextDecl(factory,label,ctxName);
labels.add(d);
rf.addContextDecl(ast.getAltLabel(), d);
}
}
ActionAST arg = (ActionAST)ast.getFirstChildWithType(ANTLRParser.ARG_ACTION);
if ( arg != null ) {
argExprsChunks = ActionTranslator.translateAction(factory, rf, arg.token, arg);
}
// If action refs rule as rulename not label, we need to define implicit label
if ( factory.getCurrentOuterMostAlt().ruleRefsInActions.containsKey(ast.getText()) ) {
String label = gen.getTarget().getImplicitRuleLabel(ast.getText());
RuleContextDecl d = new RuleContextDecl(factory,label,ctxName);
labels.add(d);
rf.addContextDecl(ast.getAltLabel(), d);
}
}
@Override
public List<Decl> getLabels() {
return labels.elements();
}
}