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C API: Consolidate initializers

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José Luis Lafuente 2024-02-22 00:09:15 +01:00 • committed by José Luis Lafuente
parent 51ff547d9a
commit dfdb90dc8e
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3 changed files with 183 additions and 62 deletions
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99
src/libexpr/c/nix_api_value.cc
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@ -17,6 +17,32 @@
#include "gc_cpp.h"
#endif
class ListBuilder
{
private:
std::vector<nix::Value *> values;
public:
ListBuilder(size_t capacity)
{
values.reserve(capacity);
}
void push_back(nix::Value * value)
{
values.push_back(value);
}
Value * finish(nix::EvalState * state, nix::Value * list)
{
state->mkList(*list, values.size());
for (size_t n = 0; n < list->listSize(); ++n) {
list->listElems()[n] = values[n];
}
return list;
}
};
// Helper function to throw an exception if value is null
static const nix::Value & check_value_not_null(const Value * value)
{
@ -334,7 +360,7 @@ const char * nix_get_attr_name_byidx(nix_c_context * context, const Value * valu
NIXC_CATCH_ERRS_NULL
}
nix_err nix_set_bool(nix_c_context * context, Value * value, bool b)
nix_err nix_init_bool(nix_c_context * context, Value * value, bool b)
{
if (context)
context->last_err_code = NIX_OK;
@ -346,7 +372,7 @@ nix_err nix_set_bool(nix_c_context * context, Value * value, bool b)
}
// todo string context
nix_err nix_set_string(nix_c_context * context, Value * value, const char * str)
nix_err nix_init_string(nix_c_context * context, Value * value, const char * str)
{
if (context)
context->last_err_code = NIX_OK;
@ -357,7 +383,7 @@ nix_err nix_set_string(nix_c_context * context, Value * value, const char * str)
NIXC_CATCH_ERRS
}
nix_err nix_set_path_string(nix_c_context * context, Value * value, const char * str)
nix_err nix_init_path_string(nix_c_context * context, Value * value, const char * str)
{
if (context)
context->last_err_code = NIX_OK;
@ -368,7 +394,7 @@ nix_err nix_set_path_string(nix_c_context * context, Value * value, const char *
NIXC_CATCH_ERRS
}
nix_err nix_set_float(nix_c_context * context, Value * value, double d)
nix_err nix_init_float(nix_c_context * context, Value * value, double d)
{
if (context)
context->last_err_code = NIX_OK;
@ -379,7 +405,7 @@ nix_err nix_set_float(nix_c_context * context, Value * value, double d)
NIXC_CATCH_ERRS
}
nix_err nix_set_int(nix_c_context * context, Value * value, int64_t i)
nix_err nix_init_int(nix_c_context * context, Value * value, int64_t i)
{
if (context)
context->last_err_code = NIX_OK;
@ -390,7 +416,7 @@ nix_err nix_set_int(nix_c_context * context, Value * value, int64_t i)
NIXC_CATCH_ERRS
}
nix_err nix_set_null(nix_c_context * context, Value * value)
nix_err nix_init_null(nix_c_context * context, Value * value)
{
if (context)
context->last_err_code = NIX_OK;
@ -401,7 +427,7 @@ nix_err nix_set_null(nix_c_context * context, Value * value)
NIXC_CATCH_ERRS
}
nix_err nix_set_external(nix_c_context * context, Value * value, ExternalValue * val)
nix_err nix_init_external(nix_c_context * context, Value * value, ExternalValue * val)
{
if (context)
context->last_err_code = NIX_OK;
@ -413,31 +439,52 @@ nix_err nix_set_external(nix_c_context * context, Value * value, ExternalValue *
NIXC_CATCH_ERRS
}
nix_err nix_make_list(nix_c_context * context, EvalState * s, Value * value, unsigned int size)
ListBuilder * nix_make_list_builder(nix_c_context * context, EvalState * state, size_t capacity)
{
if (context)
context->last_err_code = NIX_OK;
try {
auto builder = ListBuilder(capacity);
return new
#if HAVE_BOEHMGC
(NoGC)
#endif
ListBuilder{std::move(builder)};
}
NIXC_CATCH_ERRS_NULL
}
nix_err nix_list_builder_insert(nix_c_context * context, ListBuilder * builder, Value * value)
{
if (context)
context->last_err_code = NIX_OK;
try {
builder->push_back((nix::Value *) value);
}
NIXC_CATCH_ERRS
}
void nix_list_builder_free(ListBuilder * bb)
{
#if HAVE_BOEHMGC
GC_FREE(bb);
#else
delete bb;
#endif
}
nix_err nix_make_list(nix_c_context * context, EvalState * s, Value * value, ListBuilder * b)
{
if (context)
context->last_err_code = NIX_OK;
try {
auto & v = check_value_not_null(value);
s->state.mkList(v, size);
b->finish(&(s->state), &v);
}
NIXC_CATCH_ERRS
}
nix_err nix_set_list_byidx(nix_c_context * context, Value * value, unsigned int ix, Value * elem)
{
if (context)
context->last_err_code = NIX_OK;
try {
// todo: assert that this is a list
auto & v = check_value_not_null(value);
auto & e = check_value_not_null(elem);
v.listElems()[ix] = &e;
}
NIXC_CATCH_ERRS
}
nix_err nix_set_primop(nix_c_context * context, Value * value, PrimOp * p)
nix_err nix_init_primop(nix_c_context * context, Value * value, PrimOp * p)
{
if (context)
context->last_err_code = NIX_OK;
@ -486,14 +533,14 @@ BindingsBuilder * nix_make_bindings_builder(nix_c_context * context, EvalState *
NIXC_CATCH_ERRS_NULL
}
nix_err nix_bindings_builder_insert(nix_c_context * context, BindingsBuilder * b, const char * name, Value * value)
nix_err nix_bindings_builder_insert(nix_c_context * context, BindingsBuilder * bb, const char * name, Value * value)
{
if (context)
context->last_err_code = NIX_OK;
try {
auto & v = check_value_not_null(value);
nix::Symbol s = b->builder.state.symbols.create(name);
b->builder.insert(s, &v);
nix::Symbol s = bb->builder.state.symbols.create(name);
bb->builder.insert(s, &v);
}
NIXC_CATCH_ERRS
}