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116
core/src/main/java/gov/nist/secauto/metaschema/core/metapath/cst/AnonymousFunctionCall.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * SPDX-FileCopyrightText: none | ||
| * SPDX-License-Identifier: CC0-1.0 | ||
| */ | ||
|
|
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| package gov.nist.secauto.metaschema.core.metapath.cst; | ||
|
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| import gov.nist.secauto.metaschema.core.metapath.DynamicContext; | ||
| import gov.nist.secauto.metaschema.core.metapath.ISequence; | ||
| import gov.nist.secauto.metaschema.core.metapath.function.IArgument; | ||
| import gov.nist.secauto.metaschema.core.metapath.function.IFunction; | ||
| import gov.nist.secauto.metaschema.core.metapath.function.impl.AbstractFunction; | ||
| import gov.nist.secauto.metaschema.core.metapath.item.IItem; | ||
| import gov.nist.secauto.metaschema.core.metapath.type.ISequenceType; | ||
| import gov.nist.secauto.metaschema.core.util.ObjectUtils; | ||
|
|
||
| import java.util.EnumSet; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.UUID; | ||
|
|
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| import edu.umd.cs.findbugs.annotations.NonNull; | ||
| import edu.umd.cs.findbugs.annotations.Nullable; | ||
|
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| /** | ||
| * Executes a function call based on a specifier expression that is used to | ||
| * dtermine the function and multiple argument expressions that are used to | ||
| * determine the function arguments. | ||
| */ | ||
| public class AnonymousFunctionCall | ||
| extends AbstractFunction | ||
| implements IExpression, IFunction { | ||
| @NonNull | ||
| private static final Set<FunctionProperty> PROPERTIES = ObjectUtils.notNull(EnumSet.of( | ||
| // FunctionProperty.CONTEXT_DEPENDENT, | ||
| // FunctionProperty.FOCUS_DEPENDENT, | ||
| FunctionProperty.DETERMINISTIC)); | ||
| @NonNull | ||
| private final ISequenceType result; | ||
| @NonNull | ||
| private final IExpression body; | ||
|
|
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| /** | ||
| * Construct a new function call expression. | ||
| * | ||
| * @param arguments | ||
| */ | ||
| public AnonymousFunctionCall( | ||
| @NonNull List<IArgument> arguments, | ||
| @NonNull ISequenceType result, | ||
| @NonNull IExpression body) { | ||
| super("(anonymous)-" + UUID.randomUUID().toString(), "", arguments); | ||
| this.result = result; | ||
| this.body = body; | ||
| } | ||
|
|
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| @Override | ||
| public List<IExpression> getChildren() { | ||
| return ObjectUtils.notNull(List.of(body)); | ||
| } | ||
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| @Override | ||
| public Class<? extends IItem> getBaseResultType() { | ||
| return IFunction.class; | ||
| } | ||
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| @Override | ||
| public <RESULT, CONTEXT> RESULT accept(IExpressionVisitor<RESULT, CONTEXT> visitor, CONTEXT context) { | ||
| return visitor.visitAnonymousFunctionCall(this, context); | ||
| } | ||
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| @Override | ||
| public ISequence<?> accept(DynamicContext dynamicContext, ISequence<?> focus) { | ||
| return ISequence.of(this); | ||
| } | ||
|
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| @SuppressWarnings("null") | ||
| @Override | ||
| public String toASTString() { | ||
| return String.format("%s[arguments=%s,return=%s]", | ||
| getClass().getName(), getName(), | ||
| getArguments(), | ||
| result.toSignature()); | ||
| } | ||
|
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| @Override | ||
| public Set<FunctionProperty> getProperties() { | ||
| return PROPERTIES; | ||
| } | ||
|
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| @Override | ||
| public ISequenceType getResult() { | ||
| return result; | ||
| } | ||
|
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| @Override | ||
| @NonNull | ||
| protected ISequence<?> executeInternal( | ||
| @NonNull List<ISequence<?>> arguments, | ||
| @NonNull DynamicContext dynamicContext, | ||
| @Nullable IItem focus) { | ||
|
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| DynamicContext subContext = dynamicContext.subContext(); | ||
| Iterator<? extends ISequence<?>> args = arguments.iterator(); | ||
| Iterator<IArgument> params = getArguments().iterator(); | ||
| while (args.hasNext() && params.hasNext()) { | ||
| ISequence<?> sequence = args.next(); | ||
| IArgument param = params.next(); | ||
|
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| subContext.bindVariableValue(param.getName(), ObjectUtils.notNull(sequence)); | ||
| } | ||
|
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| return body.accept(subContext, ISequence.of(focus)); | ||
| } | ||
| } |
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