Class NativeStringParser

java.lang.Object

net.jrodolfo.java_evolution.java22.foreign_function.NativeStringParser

public class NativeStringParser
extends Object

Demonstrates a Java 22 foreign function call to the native atoi function.

The C atoi function parses an integer from a null-terminated C string. Java creates that native string in a confined Arena, links the native function with a FunctionDescriptor, and invokes it through a MethodHandle.

Constructor Summary

Constructors

Constructor	Description
NativeStringParser()

Method Summary

Modifier and Type	Method	Description
ForeignFunctionCallResult	parseInteger(String text)	Parses an integer by calling native atoi.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NativeStringParser

public NativeStringParser()

Method Details

parseInteger

public ForeignFunctionCallResult parseInteger(String text)
                                       throws Throwable

Parses an integer by calling native atoi.

Parameters:

text - the Java text copied into native memory

Returns:

the native call result

Throws:

Throwable - if the native function cannot be linked or invoked