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C API: nix_get_string now accepts a callback to return the value

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José Luis Lafuente 2024-04-15 21:05:52 +02:00
parent 74e4bc9b1d
commit c75b143b6c
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GPG key ID: 8A3455EBE455489A
6 changed files with 65 additions and 35 deletions
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12
src/libexpr-c/nix_api_value.cc
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@ -15,9 +15,9 @@
#include "value/context.hh"
#ifdef HAVE_BOEHMGC
# include "gc/gc.h"
# define GC_INCLUDE_NEW 1
# include "gc_cpp.h"
# include "gc/gc.h"
# define GC_INCLUDE_NEW 1
# include "gc_cpp.h"
#endif
// Helper function to throw an exception if value is null
@ -166,16 +166,16 @@ bool nix_get_bool(nix_c_context * context, const Value * value)
NIXC_CATCH_ERRS_RES(false);
}
const char * nix_get_string(nix_c_context * context, const Value * value)
nix_err nix_get_string(nix_c_context * context, const Value * value, nix_get_string_callback callback, void * user_data)
{
if (context)
context->last_err_code = NIX_OK;
try {
auto & v = check_value_not_null(value);
assert(v.type() == nix::nString);
return v.c_str();
call_nix_get_string_callback(v.c_str(), callback, user_data);
}
NIXC_CATCH_ERRS_NULL
NIXC_CATCH_ERRS
}
const char * nix_get_path_string(nix_c_context * context, const Value * value)