package com.creativewidgetworks.goldparser.simple3.rulehandlers;
import com.creativewidgetworks.goldparser.engine.ParserException;
import com.creativewidgetworks.goldparser.engine.Reduction;
import com.creativewidgetworks.goldparser.parser.GOLDParser;
import com.creativewidgetworks.goldparser.parser.ProcessRule;
import com.creativewidgetworks.goldparser.simple3.Simple3;
@ProcessRule(rule={
"<Statements> ::= <StatementOrBlock> <Statements>",
"<Statements> ::= <StatementOrBlock>",
"<StatementOrBlock> ::= <Statement>",
"<StatementOrBlock> ::= begin <Statements> end"
})
/**
* Rule handler for the statement(s) rules.
*
* @author Ralph Iden (http://www.creativewidgetworks.com)
* @version 5.0.0
*/
public class Statements extends Reduction {
private Reduction statement1;
private Reduction statement2;
public Statements(GOLDParser parser) {
Reduction reduction = parser.getCurrentReduction();
if (reduction != null) {
if (reduction.size() > 0 && reduction.size() < 3) {
statement1 = reduction.get(0).asReduction();
statement2 = (reduction.size() > 1) ? reduction.get(1).asReduction() : null;
} else {
parser.raiseParserException(Simple3.formatMessage("error.param_count_range", "1", "2", String.valueOf(reduction.size())));
}
} else {
parser.raiseParserException(Simple3.formatMessage("error.no_reduction"));
}
}
@Override
public void execute() throws ParserException {
statement1.execute();
setValue(statement1.getValue());
if (statement2 != null) {
statement2.execute();
setValue(statement2.getValue());
}
}
}