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package jdk.nashorn.internal.ir;

import jdk.nashorn.internal.runtime.linker.NashornCallSiteDescriptor;


Interface used by AccessNodes, IndexNodes and IdentNodes to signal that when evaluated, their value will be treated as a function and immediately invoked, e.g. foo(), foo.bar() or foo[bar](). Used to customize the priority of composite dynamic operations when emitting INVOKEDYNAMIC instructions that implement them, namely prioritize getMethod over getElem or getProp. An access or ident node with isFunction set to true will be emitted as NashornCallSiteDescriptor.GET_METHOD_PROPERTY while one with it set to false will be emitted as NashornCallSiteDescriptor.GET_PROPERTY. Similarly, an index node with isFunction set to true will be emitted as NashornCallSiteDescriptor.GET_METHOD_ELEMENT while the one set to false will be emitted as NashornCallSiteDescriptor.GET_ELEMENT. 
/**
 * Interface used by AccessNodes, IndexNodes and IdentNodes to signal that when evaluated, their value will be treated
 * as a function and immediately invoked, e.g. {@code foo()}, {@code foo.bar()} or {@code foo[bar]()}. Used to customize
 * the priority of composite dynamic operations when emitting {@code INVOKEDYNAMIC} instructions that implement them,
 * namely prioritize {@code getMethod} over {@code getElem} or {@code getProp}. An access or ident node with isFunction
 * set to true will be emitted as {@link NashornCallSiteDescriptor#GET_METHOD_PROPERTY} while one with it set to false will be emitted
 * as {@link NashornCallSiteDescriptor#GET_PROPERTY}. Similarly, an index node with isFunction set to true will be emitted as
 * {@link NashornCallSiteDescriptor#GET_METHOD_ELEMENT} while the one set to false will be emitted as {@link NashornCallSiteDescriptor#GET_ELEMENT}.
 */
public interface FunctionCall {
    
Returns true if the value of this expression will be treated as a function and immediately invoked.

Returns:true if the value of this expression will be treated as a function and immediately invoked.
/**
     * Returns true if the value of this expression will be treated as a function and immediately invoked.
     * @return true if the value of this expression will be treated as a function and immediately invoked.
     */
    public boolean isFunction();
}