/*******************************************************************************
* Copyright (c) 2007 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is made available under the terms of the
* Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.el.internal.core.parser.rule;
import org.jboss.tools.common.el.core.ElCoreMessages;
import org.jboss.tools.common.el.core.parser.IRule;
import org.jboss.tools.common.el.core.parser.Tokenizer;
import org.jboss.tools.common.el.internal.core.parser.token.ArgEndTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ArgStartTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ArrayEndTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.CommaTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.DotTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.EndELTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ExprEndTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.OperationTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ParamEndTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ParamStartTokenDescription;
import org.jboss.tools.common.el.internal.core.parser.token.ParamUtil;
import org.jboss.tools.common.el.internal.core.parser.token.WhiteSpaceTokenDescription;
/**
*
* @author V. Kabanovich
*
*/
public class CallRule implements IRule, BasicStates {
public static CallRule INSTANCE = new CallRule();
public int[] getStartStates() {
return new int[] {
STATE_EXPECTING_CALL,
STATE_EXPECTING_CALL_AFTER_METHOD,
};
}
public int getFinalState(int state, int token) {
switch (token) {
case WhiteSpaceTokenDescription.WHITESPACE:
return state;
case EndELTokenDescription.END_EL:
return STATE_EXPECTING_EL;
case DotTokenDescription.DOT:
return STATE_EXPECTING_NAME;
case CommaTokenDescription.COMMA:
case OperationTokenDescription.OPERATION:
return STATE_EXPECTING_OPERAND;
case ParamEndTokenDescription.PARAM_END:
case ArgEndTokenDescription.ARG_END:
return STATE_EXPECTING_CALL_AFTER_METHOD;
case ParamStartTokenDescription.PARAM_START:
return STATE_EXPECTING_PARAM;
case ArgStartTokenDescription.ARG_START:
return STATE_EXPECTING_ARG;
case ExprEndTokenDescription.EXPR_END:
return STATE_EXPECTING_CALL; // STATE_EXPECTING_OPERATION;
}
return 0;
}
public int[] getTokenTypes(int state) {
switch(state) {
case STATE_EXPECTING_CALL:
return new int[] {
WhiteSpaceTokenDescription.WHITESPACE,
EndELTokenDescription.END_EL,
DotTokenDescription.DOT,
CommaTokenDescription.COMMA,
OperationTokenDescription.OPERATION,
ParamEndTokenDescription.PARAM_END,
ArgEndTokenDescription.ARG_END,
ArrayEndTokenDescription.ARRAY_END,
ExprEndTokenDescription.EXPR_END,
ParamStartTokenDescription.PARAM_START,
ArgStartTokenDescription.ARG_START,
};
case STATE_EXPECTING_CALL_AFTER_METHOD:
return new int[] {
WhiteSpaceTokenDescription.WHITESPACE,
EndELTokenDescription.END_EL,
DotTokenDescription.DOT,
CommaTokenDescription.COMMA,
OperationTokenDescription.OPERATION,
ParamEndTokenDescription.PARAM_END,
ArgEndTokenDescription.ARG_END,
ArrayEndTokenDescription.ARRAY_END,
ExprEndTokenDescription.EXPR_END,
ArgStartTokenDescription.ARG_START,
};
}
return new int[0];
}
public String getProblem(int state, Tokenizer tokenizer) {
if(ParamUtil.isMethodParamContext(tokenizer.getContext())) {
return ElCoreMessages.CallRule_ExpectingCommaOrRParen;
} else if(ParamUtil.isComplexExpressionContext(tokenizer.getContext())) {
return ElCoreMessages.CallRule_ExpectingRParen;
} else if(ParamUtil.isArgContext(tokenizer.getContext())) {
return ElCoreMessages.CallRule_ExpectingRBracket;
} else if(ParamUtil.isArrayContext(tokenizer.getContext())) {
return ElCoreMessages.CallRule_ExpectingRBracket;
}
if(state == STATE_EXPECTING_CALL_AFTER_METHOD) {
if(ParamStartTokenDescription.INSTANCE.isStart(tokenizer, tokenizer.getCurrentIndex())) {
return ElCoreMessages.CallRule_UnexpectedLParen;
}
}
return ElCoreMessages.CallRule_ExpectingRBrace;
}
}