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add support for DoubleToLong types
This commit is contained in:
Jonathan Shook
parent
d400c81fdb
commit
1f45d0b850
@ -35,6 +35,7 @@ public class VirtDataFunctions {
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LongUnaryOperator(java.util.function.LongUnaryOperator.class, long.class),
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IntFunction(java.util.function.IntFunction.class, int.class),
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IntUnaryOperator(java.util.function.IntUnaryOperator.class, int.class),
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DoubleToLongFunction(java.util.function.DoubleToLongFunction.class, long.class),
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DoubleToIntFunction(java.util.function.DoubleToIntFunction.class, int.class),
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DoubleFunction(java.util.function.DoubleFunction.class, double.class),
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DoubleUnaryOperator(java.util.function.DoubleUnaryOperator.class, double.class),
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@ -60,46 +61,70 @@ public class VirtDataFunctions {
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}
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/**
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* Adapt a functional object into a different type of functional object.
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*
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* @param func The original function object.
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* @param type The type of function object needed.
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* @param output The output type required for the adapted function.
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* @param truncate Whether to throw an exception on any narrowing conversion. If this is set to false, then basic
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* roll-over logic is applied on narrowing conversions.
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* @param <F> The type of function object needed.
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* @return An instance of F
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Adapt a functional object into a different type of functional object.
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@param func
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The original function object.
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@param type
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The type of function object needed.
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@param output
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The output type required for the adapted function.
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@param truncate
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Whether to throw an exception on any narrowing conversion. If this is set to false, then
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basic
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roll-over logic is applied on narrowing conversions.
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@param <F>
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The type of function object needed.
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@return An instance of F
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*/
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public static <F> F adapt(Object func, Class<F> type, Class<?> output, boolean truncate) {
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FuncType funcType = FuncType.valueOf(type);
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switch (funcType) {
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case DoubleToLongFunction:
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return truncate ? (F) adaptDoubleToLongFunction(func, output) :
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(F) adaptDoubleToLongFunctionStrict(func, output);
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case LongUnaryOperator:
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return truncate ? (F) adaptLongUnaryOperator(func, output) : (F) adaptLongUnaryOperatorStrict(func, output);
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return truncate ? (F) adaptLongUnaryOperator(func, output) :
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(F) adaptLongUnaryOperatorStrict(func, output);
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case DoubleUnaryOperator:
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return truncate ? (F) adaptDoubleUnaryOperator(func, output) : (F) adaptDoubleUnaryOperatorStrict(func, output);
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return truncate ? (F) adaptDoubleUnaryOperator(func, output) :
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(F) adaptDoubleUnaryOperatorStrict(func, output);
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case IntUnaryOperator:
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return truncate ? adaptIntUnaryOperator(func, output) : adaptIntUnaryOperatorStrict(func, output);
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return truncate ? adaptIntUnaryOperator(func, output) :
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adaptIntUnaryOperatorStrict(func, output);
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case DoubleFunction:
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return truncate ? adaptDoubleFunction(func, output) : adaptDoubleFunctionStrict(func, output);
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return truncate ? adaptDoubleFunction(func, output) :
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adaptDoubleFunctionStrict(func, output);
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case LongFunction:
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return truncate ? (F) adaptLongFunction(func, output) : (F) adaptLongFunctionStrict(func, output);
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return truncate ? (F) adaptLongFunction(func, output) :
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(F) adaptLongFunctionStrict(func, output);
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case LongToDoubleFunction:
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return truncate ? (F) adaptLongToDoubleFunction(func, output) : (F) adaptLongToDoubleFunctionStrict(func, output);
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return truncate ? (F) adaptLongToDoubleFunction(func, output) :
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(F) adaptLongToDoubleFunctionStrict(func, output);
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case LongToIntFunction:
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return truncate ? (F) adaptLongToIntFunction(func, output) : (F) adaptLongFunctionStrict(func, output);
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return truncate ? (F) adaptLongToIntFunction(func, output) :
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(F) adaptLongFunctionStrict(func, output);
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case IntFunction:
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return adaptIntFunction(func, output);
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case Function:
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return truncate ? (F) adaptFunction(func, output) : adaptFunctionStrict(func, output);
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return truncate ? (F) adaptFunction(func, output) :
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adaptFunctionStrict(func, output);
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default:
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throw new RuntimeException("Unable to convert function type '" + funcType + "' (" + func.getClass().getName() +
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") to " + type.getName() + (truncate ? " WITH " : " WITHOUT ") + "truncation");
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throw new RuntimeException(
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"Unable to convert function type '" + funcType + "' (" + func.getClass()
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.getName() + ") to " + type.getName() + (truncate ? " WITH " : " WITHOUT ")
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+ "truncation");
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}
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}
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public static <F extends Object> List<F> adaptList(Object[] funcs, Class<F> type, Class<?> output, boolean truncate) {
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public static <F extends Object> List<F> adaptList(
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Object[] funcs,
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Class<F> type,
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Class<?> output,
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boolean truncate
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)
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{
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List<F> adapted = new ArrayList<>();
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for (Object func : funcs) {
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F f = adapt(func, type, output, truncate);
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@ -109,7 +134,11 @@ public class VirtDataFunctions {
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}
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private static LongToDoubleFunction adaptLongToDoubleFunctionStrict(Object func, Class<?> output) {
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private static LongToDoubleFunction adaptLongToDoubleFunctionStrict(
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Object func,
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Class<?> output
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)
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{
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FuncType isaType = FuncType.valueOf(func.getClass());
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switch (isaType) {
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case LongToDoubleFunction:
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@ -119,62 +148,117 @@ public class VirtDataFunctions {
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LongToIntFunction f2 = assertTypesAssignable(func, LongToIntFunction.class);
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return f2::applyAsInt;
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case LongFunction:
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LongFunction<Double> f3 = assertTypesAssignable(func, LongFunction.class, double.class);
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LongFunction<Double> f3 =
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assertTypesAssignable(func, LongFunction.class, double.class);
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return f3::apply;
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case LongUnaryOperator:
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LongUnaryOperator f4 = assertTypesAssignable(func, LongUnaryOperator.class);
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return f4::applyAsLong;
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case DoubleFunction:
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DoubleFunction<Double> f7 = assertTypesAssignable(func, DoubleFunction.class, double.class);
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DoubleFunction<Double> f7 =
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assertTypesAssignable(func, DoubleFunction.class, double.class);
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return f7::apply;
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case DoubleUnaryOperator:
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DoubleUnaryOperator f8 = assertTypesAssignable(func, DoubleUnaryOperator.class);
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return f8::applyAsDouble;
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case Function:
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Function<Double, Double> f9 = assertTypesAssignable(func, Function.class, double.class, double.class);
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Function<Double, Double> f9 =
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assertTypesAssignable(func, Function.class, double.class, double.class);
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return l -> f9.apply((double) l).doubleValue();
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case IntFunction:
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case IntUnaryOperator:
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throwNarrowingError(func, isaType.functionClazz);
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default:
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throw new BasicError("I don't know how to convert a " + func.getClass().getName() + " function to a LongToDoubleFunction.");
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throw new BasicError("I don't know how to convert a " + func.getClass().getName()
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+ " function to a LongToDoubleFunction.");
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}
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}
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private static DoubleToLongFunction adaptDoubleToLongFunction(Object func, Class<?> output) {
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FuncType isaType = FuncType.valueOf(func.getClass());
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switch (isaType) {
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case LongToDoubleFunction:
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LongToDoubleFunction f1 = assertTypesAssignable(func, LongToDoubleFunction.class);
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return l -> (long) f1.applyAsDouble((long) l);
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case LongToIntFunction:
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LongToIntFunction f2 = assertTypesAssignable(func, LongToIntFunction.class);
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return l -> f2.applyAsInt((long) l);
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case LongFunction:
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LongFunction<Long> f3 = assertTypesAssignable(func, LongFunction.class, Long.class);
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return l -> f3.apply((long) l);
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case LongUnaryOperator:
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LongUnaryOperator f4 = assertTypesAssignable(func, LongUnaryOperator.class);
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return l -> f4.applyAsLong((long) l);
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case IntFunction:
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IntFunction<Long> f5 = assertTypesAssignable(func, IntFunction.class, Long.class);
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return l -> f5.apply((int) l);
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case IntUnaryOperator:
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IntUnaryOperator f6 = assertTypesAssignable(func, IntUnaryOperator.class);
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return l -> f6.applyAsInt((int) l);
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case DoubleToLongFunction:
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DoubleToLongFunction f7 = assertTypesAssignable(func, DoubleToLongFunction.class);
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return l -> f7.applyAsLong((long) l);
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case DoubleToIntFunction:
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DoubleToIntFunction f8 = assertTypesAssignable(func, DoubleToIntFunction.class);
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return l -> f8.applyAsInt((int) l);
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case DoubleFunction:
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DoubleFunction<Long> f9 =
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assertTypesAssignable(func, DoubleFunction.class, Long.class);
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return f9::apply;
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case DoubleUnaryOperator:
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DoubleUnaryOperator f10 = assertTypesAssignable(func, DoubleUnaryOperator.class);
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return l -> (long) f10.applyAsDouble(l);
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case Function:
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Function<Double, Long> f11 =
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assertTypesAssignable(func, Function.class, Double.class, Long.class);
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return f11::apply;
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default:
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throw new BasicError("I don't know how to convert a " + func.getClass().getName()
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+ " function to a DoubleToLongFunction.");
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}
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}
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private static LongToDoubleFunction adaptLongToDoubleFunction(Object func, Class<?> output) {
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FuncType isaType = FuncType.valueOf(func.getClass());
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switch (isaType) {
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case LongToDoubleFunction:
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LongToDoubleFunction f1 = assertTypesAssignable(func, LongToDoubleFunction.class);
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return null;
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return assertTypesAssignable(func, LongToDoubleFunction.class);
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case LongToIntFunction:
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LongToIntFunction f2 = assertTypesAssignable(func, LongToIntFunction.class);
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return null;
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return f2::applyAsInt;
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case LongFunction:
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LongFunction<Double> f3 = assertTypesAssignable(func, LongFunction.class, double.class);
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return null;
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LongFunction<Double> f3 =
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assertTypesAssignable(func, LongFunction.class, double.class);
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return f3::apply;
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case LongUnaryOperator:
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LongUnaryOperator f4 = assertTypesAssignable(func, LongUnaryOperator.class);
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return null;
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return f4::applyAsLong;
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case IntFunction:
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IntFunction<Double> f5 = assertTypesAssignable(func, IntFunction.class, double.class);
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return null;
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IntFunction<Double> f5 =
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assertTypesAssignable(func, IntFunction.class, double.class);
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return l -> f5.apply((int) l);
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case IntUnaryOperator:
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IntUnaryOperator f6 = assertTypesAssignable(func, IntUnaryOperator.class);
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return null;
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return operand -> f6.applyAsInt((int) operand);
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case DoubleFunction:
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DoubleFunction<Double> f7 = assertTypesAssignable(func, DoubleFunction.class, double.class);
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return null;
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DoubleFunction<Double> f7 =
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assertTypesAssignable(func, DoubleFunction.class, double.class);
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return f7::apply;
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case DoubleUnaryOperator:
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DoubleUnaryOperator f8 = assertTypesAssignable(func, DoubleUnaryOperator.class);
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return null;
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return f8::applyAsDouble;
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case Function:
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Function<Double, Double> f9 = assertTypesAssignable(func, Function.class, double.class, double.class);
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return null;
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Function<Double, Double> f9 =
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assertTypesAssignable(func, Function.class, double.class, double.class);
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return t -> f9.apply((double) t);
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default:
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throw new BasicError("I don't know how to convert a " + func.getClass().getName() + " function to a LongToDoubleFunction.");
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throw new BasicError("I don't know how to convert a " + func.getClass().getName()
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+ " function to a LongToDoubleFunction.");
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}
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}
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@ -188,15 +272,32 @@ public class VirtDataFunctions {
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case LongUnaryOperator:
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LongUnaryOperator f2 = assertTypesAssignable(func, LongUnaryOperator.class);
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return f2::applyAsLong;
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case LongToDoubleFunction:
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LongToDoubleFunction f7 = assertTypesAssignable(func, LongToDoubleFunction.class);
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return f7::applyAsDouble;
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case LongToIntFunction:
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LongToIntFunction f3 = assertTypesAssignable(func, LongToIntFunction.class);
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return f3::applyAsInt;
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case DoubleToLongFunction:
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DoubleToLongFunction f4 = assertTypesAssignable(func, DoubleToLongFunction.class);
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return f4::applyAsLong;
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case DoubleToIntFunction:
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DoubleToIntFunction f5 = assertTypesAssignable(func, DoubleToIntFunction.class);
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return f5::applyAsInt;
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case DoubleFunction:
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DoubleFunction<?> f6 = assertTypesAssignable(func, DoubleFunction.class);
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return f6::apply;
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case Function:
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Function<Long, Long> f7 = assertTypesAssignable(func, Function.class, Long.class);
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return (long l) -> f7.apply(l);
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Function<Long, Long> f8 = assertTypesAssignable(func, Function.class, Long.class);
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return f8::apply;
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case DoubleUnaryOperator:
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case IntUnaryOperator:
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case IntFunction:
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default:
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throw new RuntimeException("Unable to convert " + func.getClass().getName() + " to a " +
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LongUnaryOperator.class.getName() + " since this would cause a narrowing conversion.");
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throw new RuntimeException(
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"Unable to convert " + func.getClass().getName() + " to a "
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+ LongUnaryOperator.class.getName()
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+ " since this would cause a narrowing conversion.");
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}
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}
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@ -206,48 +307,60 @@ public class VirtDataFunctions {
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switch (isaType) {
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case LongFunction:
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LongFunction<?> f1 = (LongFunction<?>) func;
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Function<Long, ?> rf1 = f1::apply;
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return rf1;
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return (Function<Long, ?>) f1::apply;
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case LongUnaryOperator:
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LongUnaryOperator f2 = (LongUnaryOperator) func;
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Function<Long, Long> rf2 = f2::applyAsLong;
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return rf2;
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return (Function<Long, Long>) f2::applyAsLong;
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case IntFunction:
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IntFunction f3 = (IntFunction) func;
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Function<Integer, ?> rf3 = f3::apply;
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return rf3;
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IntFunction<?> f3 = (IntFunction<?>) func;
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return (Function<Integer, ?>) f3::apply;
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case IntUnaryOperator:
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IntUnaryOperator f4 = (IntUnaryOperator) func;
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Function<Integer, ?> rf4 = f4::applyAsInt;
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return rf4;
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return (Function<Integer, ?>) f4::applyAsInt;
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case DoubleFunction:
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DoubleFunction f5 = (DoubleFunction) func;
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Function<Double, ?> rf5 = f5::apply;
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return rf5;
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DoubleFunction<?> f5 = (DoubleFunction<?>) func;
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return (Function<Double, ?>) f5::apply;
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case DoubleUnaryOperator:
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DoubleUnaryOperator f6 = (DoubleUnaryOperator) func;
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Function<Double, ?> rf6 = f6::applyAsDouble;
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return rf6;
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return (Function<Double, ?>) f6::applyAsDouble;
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case LongToDoubleFunction:
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LongToDoubleFunction f10 = (LongToDoubleFunction) func;
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return (Function<Long, Double>) f10;
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case LongToIntFunction:
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LongToIntFunction f7 = (LongToIntFunction) func;
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Function<Long, Integer> rf7 = f7::applyAsInt;
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case Function:
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return (Function<?, ?>) func;
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case DoubleToLongFunction:
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DoubleToLongFunction f8 = (DoubleToLongFunction) func;
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return (Function<Double, Long>) f8::applyAsLong;
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case DoubleToIntFunction:
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DoubleToIntFunction f9 = (DoubleToIntFunction) func;
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return (Function<Double, Integer>) f9;
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default:
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throw new RuntimeException("Unable to map function:" + func);
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}
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}
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private static <F> F adaptFunctionStrict(Object func, Class<?> output) {
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throw new RuntimeException("This must be implemented, now that it is used: adaptFunctionsStrict(Object,Class<?>)");
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throw new RuntimeException(
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"This must be implemented, now that it is used: adaptFunctionsStrict(Object,Class<?>)");
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}
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private static <F> F adaptDoubleFunctionStrict(Object func, Class<?> output) {
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throw new RuntimeException("This must be implemented, now that it is used: adaptDoubleFunctionStrict(Object,Class<?>) ");
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throw new RuntimeException(
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"This must be implemented, now that it is used: adaptDoubleFunctionStrict(Object,Class<?>) ");
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}
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private static LongFunction<?> adaptDoubleToLongFunctionStrict(Object func, Class<?> output) {
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throw new RuntimeException(
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"This must be implemented, now that it is used: adaptDoubleToLongFunctionStrict(Object,Class<?>)");
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}
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private static <F> F adaptIntUnaryOperatorStrict(Object func, Class<?> output) {
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throw new RuntimeException("This must be implemented, now that it is used: adaptIntUnaryOperatorStrict(Object,Class<?>)");
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throw new RuntimeException(
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"This must be implemented, now that it is used: adaptIntUnaryOperatorStrict(Object,Class<?>)");
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}
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private static DoubleUnaryOperator adaptDoubleUnaryOperator(Object func, Class<?> output) {
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@ -255,7 +368,8 @@ public class VirtDataFunctions {
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switch (toFuncType) {
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case DoubleFunction:
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DoubleFunction<Double> f2 = assertTypesAssignable(func, DoubleFunction.class, double.class);
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DoubleFunction<Double> f2 =
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assertTypesAssignable(func, DoubleFunction.class, double.class);
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return f2::apply;
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case LongToDoubleFunction:
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LongToDoubleFunction f3 = assertTypesAssignable(func, LongToDoubleFunction.class);
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@ -264,13 +378,15 @@ public class VirtDataFunctions {
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LongToIntFunction f4 = assertTypesAssignable(func, LongToIntFunction.class);
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return l -> f4.applyAsInt((long) l % Long.MAX_VALUE);
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case LongFunction:
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LongFunction<Double> f5 = assertTypesAssignable(func, LongFunction.class, double.class);
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LongFunction<Double> f5 =
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assertTypesAssignable(func, LongFunction.class, double.class);
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return l -> (double) f5.apply((long) l % Long.MAX_VALUE);
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case LongUnaryOperator:
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LongUnaryOperator f6 = assertTypesAssignable(func, LongUnaryOperator.class);
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return l -> f6.applyAsLong((long) l % Long.MAX_VALUE);
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case IntFunction:
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IntFunction<Double> f7 = assertTypesAssignable(func, IntFunction.class, double.class);
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IntFunction<Double> f7 =
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assertTypesAssignable(func, IntFunction.class, double.class);
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return l -> (double) f7.apply((int) l % Integer.MAX_VALUE);
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case IntUnaryOperator:
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IntUnaryOperator f8 = assertTypesAssignable(func, IntUnaryOperator.class);
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@ -282,25 +398,31 @@ public class VirtDataFunctions {
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DoubleUnaryOperator fA = assertTypesAssignable(func, DoubleUnaryOperator.class);
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return fA;
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case Function:
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Function<Double, Double> f1 = assertTypesAssignable(func, Function.class, double.class, double.class);
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Function<Double, Double> f1 =
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assertTypesAssignable(func, Function.class, double.class, double.class);
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return f1::apply;
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default:
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||||
throw new IllegalStateException("Unexpected value: " + toFuncType);
|
||||
}
|
||||
}
|
||||
|
||||
private static DoubleUnaryOperator adaptDoubleUnaryOperatorStrict(Object func, Class<?> output) {
|
||||
private static DoubleUnaryOperator adaptDoubleUnaryOperatorStrict(Object func, Class<?> output)
|
||||
{
|
||||
FuncType toFuncType = FuncType.valueOf(func.getClass());
|
||||
switch (toFuncType) {
|
||||
case Function:
|
||||
Function<Double, Double> f1 = assertTypesAssignable(func, Function.class, double.class, double.class);
|
||||
Function<Double, Double> f1 =
|
||||
assertTypesAssignable(func, Function.class, double.class, double.class);
|
||||
return f1::apply;
|
||||
case DoubleFunction:
|
||||
DoubleFunction<Double> f2 = assertTypesAssignable(func, DoubleFunction.class, double.class);
|
||||
DoubleFunction<Double> f2 =
|
||||
assertTypesAssignable(func, DoubleFunction.class, double.class);
|
||||
return f2::apply;
|
||||
default:
|
||||
throw new RuntimeException("Unable to convert " + func.getClass().getName() + " to a " +
|
||||
DoubleUnaryOperator.class.getName() + " since this would cause a narrowing conversion.");
|
||||
throw new RuntimeException(
|
||||
"Unable to convert " + func.getClass().getName() + " to a "
|
||||
+ DoubleUnaryOperator.class.getName()
|
||||
+ " since this would cause a narrowing conversion.");
|
||||
}
|
||||
}
|
||||
|
||||
@ -315,16 +437,20 @@ public class VirtDataFunctions {
|
||||
LongUnaryOperator o5 = assertTypesAssignable(func, LongUnaryOperator.class);
|
||||
return o5;
|
||||
case Function:
|
||||
Function<Long, Long> o7 = assertTypesAssignable(func, Function.class, long.class, long.class);
|
||||
Function<Long, Long> o7 =
|
||||
assertTypesAssignable(func, Function.class, long.class, long.class);
|
||||
return o7::apply;
|
||||
default:
|
||||
throw new RuntimeException("Unable to convert " + func.getClass().getName() + " to a " +
|
||||
LongUnaryOperator.class.getName() + " since this would cause a narrowing conversion.");
|
||||
throw new RuntimeException(
|
||||
"Unable to convert " + func.getClass().getName() + " to a "
|
||||
+ LongUnaryOperator.class.getName()
|
||||
+ " since this would cause a narrowing conversion.");
|
||||
}
|
||||
}
|
||||
|
||||
private static <F> F adaptIntFunction(Object func, Class<?> output) {
|
||||
throw new RuntimeException("This must be implemented, now that it is used: adaptIntFunction(Object,Class<?>)");
|
||||
throw new RuntimeException(
|
||||
"This must be implemented, now that it is used: adaptIntFunction(Object,Class<?>)");
|
||||
}
|
||||
|
||||
protected static LongToIntFunction adaptLongToIntFunction(Object func, Class<?> output) {
|
||||
@ -332,31 +458,36 @@ public class VirtDataFunctions {
|
||||
|
||||
switch (isaType) {
|
||||
case LongToDoubleFunction:
|
||||
LongToDoubleFunction f1 = assertTypesAssignable(func, LongToDoubleFunction.class, double.class);
|
||||
LongToDoubleFunction f1 =
|
||||
assertTypesAssignable(func, LongToDoubleFunction.class, double.class);
|
||||
return l -> (int) (f1.applyAsDouble(l) % Integer.MAX_VALUE);
|
||||
case LongToIntFunction:
|
||||
LongToIntFunction f2 = assertTypesAssignable(func, LongToIntFunction.class);
|
||||
return f2;
|
||||
case LongFunction:
|
||||
LongFunction<Double> f3 = assertTypesAssignable(func, LongFunction.class, double.class);
|
||||
LongFunction<Double> f3 =
|
||||
assertTypesAssignable(func, LongFunction.class, double.class);
|
||||
return l -> (int) f3.apply((int) l % Integer.MAX_VALUE).longValue();
|
||||
case LongUnaryOperator:
|
||||
LongUnaryOperator f4 = assertTypesAssignable(func, LongUnaryOperator.class);
|
||||
return l -> (int) (f4.applyAsLong(l) % Integer.MAX_VALUE);
|
||||
case IntFunction:
|
||||
IntFunction<Long> f5 = assertTypesAssignable(func, IntFunction.class, double.class);
|
||||
return l -> (int) f5.apply((int) l % Integer.MAX_VALUE).longValue() % Integer.MAX_VALUE;
|
||||
return l -> (int) f5.apply((int) l % Integer.MAX_VALUE).longValue()
|
||||
% Integer.MAX_VALUE;
|
||||
case IntUnaryOperator:
|
||||
IntUnaryOperator f6 = assertTypesAssignable(func, IntUnaryOperator.class);
|
||||
return l -> f6.applyAsInt((int) l % Integer.MAX_VALUE);
|
||||
case DoubleFunction:
|
||||
DoubleFunction<Double> f7 = assertTypesAssignable(func, DoubleFunction.class, double.class);
|
||||
DoubleFunction<Double> f7 =
|
||||
assertTypesAssignable(func, DoubleFunction.class, double.class);
|
||||
return l -> (int) f7.apply(l).longValue() & Integer.MAX_VALUE;
|
||||
case DoubleUnaryOperator:
|
||||
DoubleUnaryOperator f8 = assertTypesAssignable(func, DoubleUnaryOperator.class);
|
||||
return l -> (int) f8.applyAsDouble(l) % Integer.MAX_VALUE;
|
||||
case Function:
|
||||
Function<Double, Double> f9 = assertTypesAssignable(func, Function.class, double.class, double.class);
|
||||
Function<Double, Double> f9 =
|
||||
assertTypesAssignable(func, Function.class, double.class, double.class);
|
||||
return l -> (int) f9.apply((double) l).longValue() % Integer.MAX_VALUE;
|
||||
default:
|
||||
throw new IllegalStateException("Unexpected value: " + isaType);
|
||||
@ -397,15 +528,17 @@ public class VirtDataFunctions {
|
||||
assertOutputAssignable(f9.applyAsInt(1L), output);
|
||||
return (long l) -> f9.applyAsInt(l);
|
||||
default:
|
||||
throw new RuntimeException("Unable to convert " + func.getClass().getName() + " to a " +
|
||||
LongUnaryOperator.class.getName());
|
||||
throw new RuntimeException(
|
||||
"Unable to convert " + func.getClass().getName() + " to a "
|
||||
+ LongUnaryOperator.class.getName());
|
||||
}
|
||||
}
|
||||
|
||||
private static void assertOutputAssignable(Object result, Class<?> clazz) {
|
||||
if (!ClassUtils.isAssignable(result.getClass(), clazz, true)) {
|
||||
throw new InvalidParameterException("Unable to assign type of " + result.getClass().getName()
|
||||
+ " to " + clazz.getName());
|
||||
throw new InvalidParameterException(
|
||||
"Unable to assign type of " + result.getClass().getName() + " to "
|
||||
+ clazz.getName());
|
||||
}
|
||||
|
||||
// if (!clazz.isAssignableFrom(result.getClass())) {
|
||||
@ -415,11 +548,13 @@ public class VirtDataFunctions {
|
||||
}
|
||||
|
||||
private static <F> F adaptDoubleFunction(Object func, Class<?> output) {
|
||||
throw new RuntimeException("This must be implemented, now that it is used: adaptDoubleFunction(Object,Class<?>)");
|
||||
throw new RuntimeException(
|
||||
"This must be implemented, now that it is used: adaptDoubleFunction(Object,Class<?>)");
|
||||
}
|
||||
|
||||
private static <F> F adaptIntUnaryOperator(Object func, Class<?> output) {
|
||||
throw new RuntimeException("This must be implemented, now that it is used: adaptIntUnaryOperator(Object,Class<?>)");
|
||||
throw new RuntimeException(
|
||||
"This must be implemented, now that it is used: adaptIntUnaryOperator(Object,Class<?>)");
|
||||
}
|
||||
|
||||
|
||||
@ -434,7 +569,8 @@ public class VirtDataFunctions {
|
||||
LongFunction<Long> o2 = assertTypesAssignable(func, LongFunction.class, long.class);
|
||||
return o2::apply;
|
||||
case DoubleFunction:
|
||||
DoubleFunction<Long> o3 = assertTypesAssignable(func, DoubleFunction.class, long.class);
|
||||
DoubleFunction<Long> o3 =
|
||||
assertTypesAssignable(func, DoubleFunction.class, long.class);
|
||||
return o3::apply;
|
||||
case IntUnaryOperator:
|
||||
IntUnaryOperator o4 = assertTypesAssignable(func, IntUnaryOperator.class);
|
||||
@ -446,7 +582,8 @@ public class VirtDataFunctions {
|
||||
DoubleUnaryOperator o6 = assertTypesAssignable(func, DoubleUnaryOperator.class);
|
||||
return (long l) -> (long) (o6.applyAsDouble(l) % Long.MAX_VALUE);
|
||||
case Function:
|
||||
Function<Long, Long> o7 = assertTypesAssignable(func, Function.class, long.class, long.class);
|
||||
Function<Long, Long> o7 =
|
||||
assertTypesAssignable(func, Function.class, long.class, long.class);
|
||||
return o7::apply;
|
||||
case LongToDoubleFunction:
|
||||
LongToDoubleFunction o8 = assertTypesAssignable(func, LongToDoubleFunction.class);
|
||||
@ -455,49 +592,60 @@ public class VirtDataFunctions {
|
||||
LongToIntFunction o9 = assertTypesAssignable(func, LongToIntFunction.class);
|
||||
return o9::applyAsInt;
|
||||
}
|
||||
throw new InvalidParameterException("Unable to convert " + func.getClass().getName() + " to a " +
|
||||
LongUnaryOperator.class.getName());
|
||||
throw new InvalidParameterException(
|
||||
"Unable to convert " + func.getClass().getName() + " to a "
|
||||
+ LongUnaryOperator.class.getName());
|
||||
}
|
||||
|
||||
/**
|
||||
* Given a base object and a wanted type to convert it to, assert that the type of the base object is assignable to
|
||||
* the wanted type. Further, if the wanted type is a generic type, assert that additional classes are assignable to
|
||||
* the generic type parameters. Thus, if you want to assign to a generic type from a non-generic type, you must
|
||||
* qualify the types of values that will be used in those generic parameter positions in declaration order.
|
||||
*
|
||||
* <p>This is useful for taking any object and a known type and reifying it as the known type so that it can be
|
||||
* then used idiomatically with normal type awareness. This scenario occurs when you are accepting an open type for
|
||||
* flexibility but then need to narrow the type sufficiently for additional conversion in a type-safe way.</p>
|
||||
*
|
||||
* @param base The object to be assigned to the wanted type
|
||||
* @param wantType The class type that the base object needs to be assignable to
|
||||
* @param clazzes The types of values which will checked against generic type parameters of the wanted type
|
||||
* @param <T> Generic parameter T for the wanted type
|
||||
* @return The original object casted to the wanted type after verification of parameter assignability
|
||||
Given a base object and a wanted type to convert it to, assert that the type of the base object
|
||||
is assignable to
|
||||
the wanted type. Further, if the wanted type is a generic type, assert that additional classes
|
||||
are assignable to
|
||||
the generic type parameters. Thus, if you want to assign to a generic type from a non-generic
|
||||
type, you must
|
||||
qualify the types of values that will be used in those generic parameter positions in
|
||||
declaration order.
|
||||
|
||||
<p>This is useful for taking any object and a known type and reifying it as the known type so
|
||||
that it can be
|
||||
then used idiomatically with normal type awareness. This scenario occurs when you are accepting
|
||||
an open type for
|
||||
flexibility but then need to narrow the type sufficiently for additional conversion in a
|
||||
type-safe way.</p>
|
||||
@param base
|
||||
The object to be assigned to the wanted type
|
||||
@param wantType
|
||||
The class type that the base object needs to be assignable to
|
||||
@param clazzes
|
||||
The types of values which will checked against generic type parameters of the wanted type
|
||||
@param <T>
|
||||
Generic parameter T for the wanted type
|
||||
@return The original object casted to the wanted type after verification of parameter assignability
|
||||
*/
|
||||
private static <T> T assertTypesAssignable(
|
||||
Object base,
|
||||
Class<T> wantType,
|
||||
Class<?>... clazzes) {
|
||||
private static <T> T assertTypesAssignable(Object base, Class<T> wantType, Class<?>... clazzes)
|
||||
{
|
||||
|
||||
if (!wantType.isAssignableFrom(base.getClass())) {
|
||||
throw new InvalidParameterException("Unable to assign " + wantType.getName() + " from " +
|
||||
base.getClass().getName());
|
||||
throw new InvalidParameterException(
|
||||
"Unable to assign " + wantType.getName() + " from " + base.getClass().getName());
|
||||
}
|
||||
|
||||
TypeVariable<? extends Class<?>>[] typeParameters = base.getClass().getTypeParameters();
|
||||
if (typeParameters.length > 0) {
|
||||
if (clazzes.length != typeParameters.length) {
|
||||
throw new InvalidParameterException(
|
||||
"type parameter lengths are mismatched:" + clazzes.length + ", " + typeParameters.length
|
||||
);
|
||||
"type parameter lengths are mismatched:" + clazzes.length + ", "
|
||||
+ typeParameters.length);
|
||||
}
|
||||
for (int i = 0; i < clazzes.length; i++) {
|
||||
Class<?> from = clazzes[i];
|
||||
TypeVariable<? extends Class<?>> to = typeParameters[i];
|
||||
boolean assignableFrom = to.getGenericDeclaration().isAssignableFrom(from);
|
||||
if (!assignableFrom) {
|
||||
throw new InvalidParameterException("Can not assign " + from.getName() + " to " + to.getGenericDeclaration().getName());
|
||||
throw new InvalidParameterException(
|
||||
"Can not assign " + from.getName() + " to " + to.getGenericDeclaration()
|
||||
.getName());
|
||||
}
|
||||
}
|
||||
|
||||
@ -507,14 +655,16 @@ public class VirtDataFunctions {
|
||||
}
|
||||
|
||||
/**
|
||||
* Throw an error indicating a narrowing conversion was attempted for strict conversion.
|
||||
*
|
||||
* @param func The source function to convert from
|
||||
* @param targetClass The target class which was requested
|
||||
Throw an error indicating a narrowing conversion was attempted for strict conversion.
|
||||
@param func
|
||||
The source function to convert from
|
||||
@param targetClass
|
||||
The target class which was requested
|
||||
*/
|
||||
private static void throwNarrowingError(Object func, Class<?> targetClass) {
|
||||
throw new BasicError("Converting from " + func.getClass().getName() + " to " + targetClass.getName() +
|
||||
" is not allowed when strict conversion is requested.");
|
||||
throw new BasicError(
|
||||
"Converting from " + func.getClass().getName() + " to " + targetClass.getName()
|
||||
+ " is not allowed when strict conversion is requested.");
|
||||
}
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user