package com.creativewidgetworks.goldparser.simple3.rulehandlers;
import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import com.creativewidgetworks.goldparser.engine.Reduction;
import com.creativewidgetworks.goldparser.parser.ProcessRule;
import com.creativewidgetworks.goldparser.parser.Variable;
import com.creativewidgetworks.goldparser.parser.GOLDParser;
@ProcessRule(rule={
"<ParamList> ::= Id , <ParamList>",
"<ParamList> ::= Id",
"<OptionalParamList> ::= <ParamList>",
"<OptionalParamList> ::= "
})
/**
* Rule handler for the function parameters rule.
*
* @author Ralph Iden (http://www.creativewidgetworks.com)
* @version 5.0.0
*/
public class Parameters extends Reduction {
public static final String KEY_PARAMETERS = "[ParameterStack]";
public Parameters(GOLDParser parser) {
Reduction reduction = parser.getCurrentReduction();
List<String> parameters = new ArrayList<String>();
if (reduction.size() > 0) {
Stack stack;
Variable var = parser.getProgramVariable(KEY_PARAMETERS);
if (var == null) {
stack = new Stack();
parser.setProgramVariable(KEY_PARAMETERS, new Variable(stack));
} else {
stack = (Stack)var.asObject();
}
stack.push(reduction.get(0).getData());
// Copy the values of the current stack to the value object leaving
// all the values on the stack
int paramCount = stack.size();
for (int i = paramCount - 1; i >= 0; i--) {
parameters.add(stack.get(i).toString());
}
}
setValue(new Variable(parameters));
}
}