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1 package nabble.naml.compiler;
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2
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3 import java.util.Map;
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4
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5
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6 final class ScopedInterpreterImpl<T> extends InterpreterImpl implements ScopedInterpreter<T> {
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7 private final Map<String,Chunk> dynamicArgs;
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8
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9 ScopedInterpreterImpl(CommandSpec cmdSpec,RunState runState,Map<Class,Integer> inStack,Map<String,?> args,Map<String,Chunk> dynamicArgs) {
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10 super(cmdSpec,runState,inStack,args);
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11 this.dynamicArgs = dynamicArgs;
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12 }
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13
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14 public Object getArg(final T scope,String param) {
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15 if( scope == null )
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16 throw new TemplateRuntimeException("scope is null");
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17 if( !cmdSpec.scopedParameters.contains(param) )
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18 throw new RuntimeException("not scoped parameter");
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19 Chunk chunk = dynamicArgs.get(param);
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20 if( chunk != null ) {
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21 return new BlockWrapper(chunk,runState) {
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22 void printTo(IPrintWriter out) {
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23 int pushed = runState.push(scope);
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24 try {
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25 super.printTo(out);
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26 } finally {
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27 runState.pop(pushed);
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28 }
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29 }
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30 };
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31 }
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32 Object obj = getArg(param);
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33 if( obj != null )
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34 return obj;
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35 if( scope instanceof Primitive )
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36 return scope;
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37 return runState.saveNamespace(scope);
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38 }
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39
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40 public String getArgString(T scope,String param) {
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41 Object val = getArg(scope,param);
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42 return val==null ? null : val.toString();
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43 }
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44
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45 }
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