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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * The Universal Permissive License (UPL), Version 1.0
 *
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 * person obtaining a copy of this software, associated documentation and/or
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 * (a) the Software, and
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package org.graalvm.nativeimage.c.struct;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import org.graalvm.word.WordBase;

Denotes a method as a field address computation of a C struct. 
 Calls to the method are replaced with address arithmetic. The possible signatures are IntType addressOfFieldName([IntType index]); 
 The return type must be a primitive integer type or a word type. The receiver is the pointer to the struct that is accessed 

The field offset, i.e., the value that is added to the receiver, is a compile time constant.
 The optional parameter index denotes an index, i.e., the receiver is treated as an array of the struct. The type must be a primitive integer type or a word type. Address arithmetic is used to scale the index with the size of the struct. 
Since:
19.0/**
 * Denotes a method as a field address computation of a {@link CStruct C struct}.
 * <p>
 * Calls to the method are replaced with address arithmetic. The possible signatures are
 * {@code IntType addressOfFieldName([IntType index]);}
 * <p>
 * The return type must be a primitive integer type or a {@link WordBase word type}. The receiver is
 * the pointer to the struct that is accessed
 * <p>
 * The field offset, i.e., the value that is added to the receiver, is a compile time constant.
 * <p>
 * The optional parameter {@code index} denotes an index, i.e., the receiver is treated as an array
 * of the struct. The type must be a primitive integer type or a {@link WordBase word type}. Address
 * arithmetic is used to scale the index with the size of the struct.
 *
 * @since 19.0
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
public @interface CFieldAddress {

    
Specifies the field name inside the C struct. If no name is provided, the method name is used as the field name. A possible "addressOf" prefix of the method name is removed. 
Since:
19.0/**
     * Specifies the field name inside the {@link CStruct C struct}. If no name is provided, the
     * method name is used as the field name. A possible "addressOf" prefix of the method name is
     * removed.
     *
     * @since 19.0
     */
    String value() default "";
}