static void s_error_map_init()

in source/module.c [255:307]

• 47 lines of code
• 6 McCabe index (conditional complexity)

static void s_error_map_init(void) {
    struct error_pair {
        PyObject *py_exception_type;
        int aws_error_code;
    };

    /* If the same key is listed multiple times, later entries overwrite earlier entries
     * Ex: Both TypeError and ValueError map to INVALID_ARG, but INVALID_ARG only maps to ValueError. */
    struct error_pair s_error_array[] = {
        {PyExc_IndexError, AWS_ERROR_INVALID_INDEX},
        {PyExc_MemoryError, AWS_ERROR_OOM},
        {PyExc_NotImplementedError, AWS_ERROR_UNIMPLEMENTED},
        {PyExc_OverflowError, AWS_ERROR_OVERFLOW_DETECTED},
        {PyExc_TypeError, AWS_ERROR_INVALID_ARGUMENT},
        {PyExc_ValueError, AWS_ERROR_INVALID_ARGUMENT},
        {PyExc_FileNotFoundError, AWS_ERROR_FILE_INVALID_PATH},
        {PyExc_BlockingIOError, AWS_IO_READ_WOULD_BLOCK},
        {PyExc_BrokenPipeError, AWS_IO_BROKEN_PIPE},
    };

    if (aws_hash_table_init(
            &s_py_to_aws_error_map,
            aws_default_allocator(), /* non-tracing allocator so this doesn't show up in leak dumps */
            AWS_ARRAY_SIZE(s_error_array),
            aws_hash_ptr,
            aws_ptr_eq,
            NULL /*destroy_key_fn*/,
            NULL /*destroy_value_fn*/)) {
        AWS_FATAL_ASSERT(0);
    }

    if (aws_hash_table_init(
            &s_aws_to_py_error_map,
            aws_default_allocator(), /* non-tracing allocator so this doesn't show up in leak dumps */
            AWS_ARRAY_SIZE(s_error_array),
            aws_hash_ptr,
            aws_ptr_eq,
            NULL /*destroy_key_fn*/,
            NULL /*destroy_value_fn*/)) {
        AWS_FATAL_ASSERT(0);
    }

    for (size_t i = 0; i < AWS_ARRAY_SIZE(s_error_array); ++i) {
        void *py_exc = s_error_array[i].py_exception_type;
        void *aws_err = (void *)(size_t)s_error_array[i].aws_error_code;
        if (aws_hash_table_put(&s_py_to_aws_error_map, py_exc, aws_err, NULL)) {
            AWS_FATAL_ASSERT(0);
        }
        if (aws_hash_table_put(&s_aws_to_py_error_map, aws_err, py_exc, NULL)) {
            AWS_FATAL_ASSERT(0);
        }
    }
}