40 lines
1.2 KiB
Java
40 lines
1.2 KiB
Java
package function.builtin;
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import function.ArgumentValidator;
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import function.FunctionNames;
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import function.LispFunction;
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import sexpression.Cons;
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import sexpression.SExpression;
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import table.FunctionTable;
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import static function.builtin.Eval.applyFunction;
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import static function.builtin.Eval.lookupFunctionOrLambda;
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@FunctionNames({ "APPLY" })
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public class APPLY extends LispFunction {
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public static SExpression apply(Cons argumentList) {
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return FunctionTable.INSTANCE.lookupFunction("APPLY").call(argumentList);
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}
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private ArgumentValidator argumentValidator;
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public APPLY(String name) {
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this.argumentValidator = new ArgumentValidator(name);
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this.argumentValidator.setExactNumberOfArguments(2);
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this.argumentValidator.setTrailingArgumentExpectedType(Cons.class);
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}
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@Override
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public SExpression call(Cons argumentList) {
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argumentValidator.validate(argumentList);
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Cons rest = (Cons) argumentList.getRest();
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Cons functionArguments = (Cons) rest.getFirst();
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SExpression functionName = argumentList.getFirst();
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LispFunction function = lookupFunctionOrLambda(functionName);
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return applyFunction(function, functionArguments);
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}
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}
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