Ch07_IntrospectWrapper.c File Reference

Cookbook Chapter 7: Introspecting a Trampoline for a Wrapper. More...

#include <infix/infix.h>
#include <stdbool.h>
#include <stdio.h>

Include dependency graph for Ch07_IntrospectWrapper.c:

Functions
static int	add_and_multiply (int a, double b)
static bool	dynamic_wrapper (infix_forward_t *trampoline, void *target_func, void **args, size_t num_provided_args, void *ret_buffer)
	A conceptual generic "wrapper" function for an unbound trampoline.
int	main ()

Detailed Description

Cookbook Chapter 7: Introspecting a Trampoline for a Wrapper.

This example demonstrates how a language binding or a generic wrapper function can use the trampoline introspection API to validate arguments at runtime before making an FFI call. This allows for more robust error checking.

Function Documentation

add_and_multiply()

static int add_and_multiply ( int  a, double  b  )

static

dynamic_wrapper()

static bool dynamic_wrapper ( infix_forward_t *  trampoline, void *  target_func, void **  args, size_t  num_provided_args, void *  ret_buffer  )

static

A conceptual generic "wrapper" function for an unbound trampoline.

In a real language binding, this function would take language-native objects as arguments, unbox them into a C void** array, and perform type checking.

Parameters

trampoline	An unbound trampoline for the desired signature.
target_func	The native C function to call.
args	An array of pointers to the C argument values.
num_provided_args	The number of arguments provided by the caller.
ret_buffer	A buffer to receive the return value.

Returns

true on success, false on failure.

main()

int main

(

void

)