parse_object Subroutine

private recursive subroutine parse_object(json, unit, str, parent, expecting_next_element)

Core parsing routine.

Type Bound

json_core

Arguments

Type IntentOptional Attributes Name
class(json_core), intent(inout) :: json
integer(kind=IK), intent(in) :: unit

file unit number (if parsing from a file)
character(kind=CK, len=*), intent(in) :: str

JSON string (if parsing from a string)
type(json_value), pointer :: parent

the parsed object will be added as a child of this
logical(kind=LK), intent(in) :: expecting_next_element

if true, this object is preceeded by a comma, so we expect a valid object to exist. used to check for trailing delimiters.

Calls

proc~~parse_object~~CallsGraph proc~parse_object json_core%parse_object proc~parse_object->proc~parse_object none~add json_core%add proc~parse_object->none~add none~destroy json_core%destroy proc~parse_object->none~destroy none~throw_exception json_core%throw_exception proc~parse_object->none~throw_exception proc~json_value_create json_value_create proc~parse_object->proc~json_value_create proc~parse_string json_core%parse_string proc~parse_object->proc~parse_string proc~parse_value json_core%parse_value proc~parse_object->proc~parse_value proc~pop_char json_core%pop_char proc~parse_object->proc~pop_char proc~json_value_add_integer json_core%json_value_add_integer none~add->proc~json_value_add_integer proc~json_value_add_integer_vec json_core%json_value_add_integer_vec none~add->proc~json_value_add_integer_vec proc~json_value_add_logical json_core%json_value_add_logical none~add->proc~json_value_add_logical proc~json_value_add_logical_vec json_core%json_value_add_logical_vec none~add->proc~json_value_add_logical_vec proc~json_value_add_member json_core%json_value_add_member none~add->proc~json_value_add_member proc~json_value_add_null json_core%json_value_add_null none~add->proc~json_value_add_null proc~json_value_add_real json_core%json_value_add_real none~add->proc~json_value_add_real proc~json_value_add_real32 json_core%json_value_add_real32 none~add->proc~json_value_add_real32 proc~json_value_add_real32_vec json_core%json_value_add_real32_vec none~add->proc~json_value_add_real32_vec proc~json_value_add_real_vec json_core%json_value_add_real_vec none~add->proc~json_value_add_real_vec proc~json_value_add_string json_core%json_value_add_string none~add->proc~json_value_add_string proc~json_value_add_string_vec json_core%json_value_add_string_vec none~add->proc~json_value_add_string_vec proc~destroy_json_core json_core%destroy_json_core none~destroy->proc~destroy_json_core proc~json_value_destroy json_core%json_value_destroy none~destroy->proc~json_value_destroy proc~json_throw_exception json_core%json_throw_exception none~throw_exception->proc~json_throw_exception proc~parse_string->none~throw_exception proc~parse_string->proc~pop_char proc~unescape_string unescape_string proc~parse_string->proc~unescape_string proc~parse_value->proc~parse_object proc~parse_value->none~throw_exception proc~parse_value->proc~parse_string proc~parse_value->proc~pop_char proc~parse_array json_core%parse_array proc~parse_value->proc~parse_array proc~parse_for_chars json_core%parse_for_chars proc~parse_value->proc~parse_for_chars proc~parse_number json_core%parse_number proc~parse_value->proc~parse_number proc~push_char json_core%push_char proc~parse_value->proc~push_char proc~to_array json_core%to_array proc~parse_value->proc~to_array proc~to_logical json_core%to_logical proc~parse_value->proc~to_logical proc~to_null json_core%to_null proc~parse_value->proc~to_null proc~to_object json_core%to_object proc~parse_value->proc~to_object proc~to_string json_core%to_string proc~parse_value->proc~to_string proc~json_value_add_integer->none~add none~create_integer json_core%create_integer proc~json_value_add_integer->none~create_integer proc~json_value_add_integer_vec->none~add none~create_array json_core%create_array proc~json_value_add_integer_vec->none~create_array proc~json_value_add_logical->none~add none~create_logical json_core%create_logical proc~json_value_add_logical->none~create_logical proc~json_value_add_logical_vec->none~add proc~json_value_add_logical_vec->none~create_array proc~json_value_add_member->none~throw_exception none~info json_core%info proc~json_value_add_member->none~info proc~json_value_add_null->none~add none~create_null json_core%create_null proc~json_value_add_null->none~create_null proc~json_value_add_real->none~add none~create_real~2 json_core%create_real proc~json_value_add_real->none~create_real~2 proc~json_value_add_real32->none~add proc~json_value_add_real32_vec->none~add proc~json_value_add_real_vec->none~add proc~json_value_add_real_vec->none~create_array proc~json_value_add_string->none~add none~create_string json_core%create_string proc~json_value_add_string->none~create_string proc~json_value_add_string_vec->none~add proc~json_value_add_string_vec->none~create_array proc~json_value_destroy->none~destroy proc~destroy_json_data destroy_json_data proc~json_value_destroy->proc~destroy_json_data proc~parse_array->none~add proc~parse_array->none~destroy proc~parse_array->none~throw_exception proc~parse_array->proc~json_value_create proc~parse_array->proc~parse_value proc~parse_array->proc~pop_char proc~parse_for_chars->none~throw_exception proc~parse_for_chars->proc~pop_char proc~parse_number->proc~pop_char proc~parse_number->proc~push_char proc~json_clear_exceptions json_core%json_clear_exceptions proc~parse_number->proc~json_clear_exceptions proc~string_to_dble json_core%string_to_dble proc~parse_number->proc~string_to_dble proc~string_to_int json_core%string_to_int proc~parse_number->proc~string_to_int proc~to_integer json_core%to_integer proc~parse_number->proc~to_integer proc~to_real json_core%to_real proc~parse_number->proc~to_real proc~push_char->none~throw_exception proc~integer_to_string integer_to_string proc~push_char->proc~integer_to_string proc~to_array->proc~destroy_json_data proc~to_logical->proc~destroy_json_data proc~to_null->proc~destroy_json_data proc~to_object->proc~destroy_json_data proc~to_string->proc~destroy_json_data proc~valid_json_hex valid_json_hex proc~unescape_string->proc~valid_json_hex proc~json_value_create_array json_core%json_value_create_array none~create_array->proc~json_value_create_array proc~json_value_create_integer json_core%json_value_create_integer none~create_integer->proc~json_value_create_integer proc~json_value_create_logical json_core%json_value_create_logical none~create_logical->proc~json_value_create_logical proc~json_value_create_null json_core%json_value_create_null none~create_null->proc~json_value_create_null proc~json_value_create_real32 json_core%json_value_create_real32 none~create_real~2->proc~json_value_create_real32 proc~json_value_create_string json_core%json_value_create_string none~create_string->proc~json_value_create_string proc~json_info json_core%json_info none~info->proc~json_info proc~json_info_by_path json_core%json_info_by_path none~info->proc~json_info_by_path proc~string_to_dble->none~throw_exception proc~string_to_real string_to_real proc~string_to_dble->proc~string_to_real proc~string_to_int->none~throw_exception proc~string_to_integer string_to_integer proc~string_to_int->proc~string_to_integer proc~to_integer->proc~destroy_json_data proc~to_real->proc~destroy_json_data proc~json_info->none~throw_exception proc~json_info_by_path->none~info none~get json_core%get proc~json_info_by_path->none~get proc~json_value_create_array->proc~json_value_create proc~json_value_create_array->proc~to_array proc~json_value_create_integer->proc~json_value_create proc~json_value_create_integer->proc~to_integer proc~json_value_create_logical->proc~json_value_create proc~json_value_create_logical->proc~to_logical proc~json_value_create_null->proc~json_value_create proc~json_value_create_null->proc~to_null proc~json_value_create_real32->none~create_real~2 proc~json_value_create_string->proc~json_value_create proc~json_value_create_string->proc~to_string proc~json_get_alloc_string_vec json_core%json_get_alloc_string_vec none~get->proc~json_get_alloc_string_vec proc~json_get_alloc_string_vec_by_path json_core%json_get_alloc_string_vec_by_path none~get->proc~json_get_alloc_string_vec_by_path proc~json_get_array json_core%json_get_array none~get->proc~json_get_array proc~json_get_array_by_path json_core%json_get_array_by_path none~get->proc~json_get_array_by_path proc~json_get_by_path json_core%json_get_by_path none~get->proc~json_get_by_path proc~json_get_integer json_core%json_get_integer none~get->proc~json_get_integer proc~json_get_integer_by_path json_core%json_get_integer_by_path none~get->proc~json_get_integer_by_path proc~json_get_integer_vec json_core%json_get_integer_vec none~get->proc~json_get_integer_vec proc~json_get_integer_vec_by_path json_core%json_get_integer_vec_by_path none~get->proc~json_get_integer_vec_by_path proc~json_get_logical json_core%json_get_logical none~get->proc~json_get_logical proc~json_get_logical_by_path json_core%json_get_logical_by_path none~get->proc~json_get_logical_by_path proc~json_get_logical_vec json_core%json_get_logical_vec none~get->proc~json_get_logical_vec proc~json_get_logical_vec_by_path json_core%json_get_logical_vec_by_path none~get->proc~json_get_logical_vec_by_path proc~json_get_real json_core%json_get_real none~get->proc~json_get_real proc~json_get_real32 json_core%json_get_real32 none~get->proc~json_get_real32 proc~json_get_real32_by_path json_core%json_get_real32_by_path none~get->proc~json_get_real32_by_path proc~json_get_real32_vec json_core%json_get_real32_vec none~get->proc~json_get_real32_vec proc~json_get_real32_vec_by_path json_core%json_get_real32_vec_by_path none~get->proc~json_get_real32_vec_by_path proc~json_get_real_by_path json_core%json_get_real_by_path none~get->proc~json_get_real_by_path proc~json_get_real_vec json_core%json_get_real_vec none~get->proc~json_get_real_vec proc~json_get_real_vec_by_path json_core%json_get_real_vec_by_path none~get->proc~json_get_real_vec_by_path proc~json_get_string json_core%json_get_string none~get->proc~json_get_string proc~json_get_string_by_path json_core%json_get_string_by_path none~get->proc~json_get_string_by_path proc~json_get_string_vec json_core%json_get_string_vec none~get->proc~json_get_string_vec proc~json_get_string_vec_by_path json_core%json_get_string_vec_by_path none~get->proc~json_get_string_vec_by_path proc~json_get_alloc_string_vec->none~get none~string_info json_core%string_info proc~json_get_alloc_string_vec->none~string_info proc~json_get_alloc_string_vec_by_path->none~throw_exception proc~json_get_alloc_string_vec_by_path->proc~json_clear_exceptions proc~json_get_alloc_string_vec_by_path->none~get proc~flag_not_found flag_not_found proc~json_get_alloc_string_vec_by_path->proc~flag_not_found proc~json_get_array->none~throw_exception proc~json_get_array_by_path->none~throw_exception proc~json_get_array_by_path->proc~json_clear_exceptions proc~json_get_array_by_path->none~get proc~json_get_by_path->none~throw_exception proc~json_get_by_path->proc~integer_to_string proc~json_get_by_path->proc~json_clear_exceptions proc~json_get_by_path_default json_core%json_get_by_path_default proc~json_get_by_path->proc~json_get_by_path_default proc~json_get_by_path_jsonpath_bracket json_core%json_get_by_path_jsonpath_bracket proc~json_get_by_path->proc~json_get_by_path_jsonpath_bracket proc~json_get_by_path_rfc6901 json_core%json_get_by_path_rfc6901 proc~json_get_by_path->proc~json_get_by_path_rfc6901 proc~json_get_integer->none~throw_exception proc~json_get_integer->proc~string_to_integer proc~json_get_integer_by_path->none~throw_exception proc~json_get_integer_by_path->proc~json_clear_exceptions proc~json_get_integer_by_path->none~get proc~json_get_integer_by_path->proc~flag_not_found proc~json_get_integer_vec->none~get proc~json_get_integer_vec_by_path->none~throw_exception proc~json_get_integer_vec_by_path->proc~json_clear_exceptions proc~json_get_integer_vec_by_path->none~get proc~json_get_integer_vec_by_path->proc~flag_not_found proc~json_get_logical->none~throw_exception proc~json_get_logical_by_path->none~throw_exception proc~json_get_logical_by_path->proc~json_clear_exceptions proc~json_get_logical_by_path->none~get proc~json_get_logical_by_path->proc~flag_not_found proc~json_get_logical_vec->none~get proc~json_get_logical_vec_by_path->none~throw_exception proc~json_get_logical_vec_by_path->proc~json_clear_exceptions proc~json_get_logical_vec_by_path->none~get proc~json_get_logical_vec_by_path->proc~flag_not_found proc~json_get_real->none~throw_exception proc~json_get_real->proc~string_to_real proc~json_get_real32->none~get proc~json_get_real32_by_path->none~get proc~json_get_real32_vec->none~get proc~json_get_real32_vec_by_path->none~get proc~json_get_real_by_path->none~throw_exception proc~json_get_real_by_path->proc~json_clear_exceptions proc~json_get_real_by_path->none~get proc~json_get_real_by_path->proc~flag_not_found proc~json_get_real_vec->none~get proc~json_get_real_vec_by_path->none~throw_exception proc~json_get_real_vec_by_path->proc~json_clear_exceptions proc~json_get_real_vec_by_path->none~get proc~json_get_real_vec_by_path->proc~flag_not_found proc~json_get_string->none~throw_exception proc~json_get_string->proc~integer_to_string proc~escape_string escape_string proc~json_get_string->proc~escape_string proc~real_to_string real_to_string proc~json_get_string->proc~real_to_string proc~json_get_string_by_path->none~throw_exception proc~json_get_string_by_path->proc~json_clear_exceptions proc~json_get_string_by_path->none~get proc~json_get_string_by_path->proc~flag_not_found proc~json_get_string_vec->none~get proc~json_get_string_vec_by_path->none~throw_exception proc~json_get_string_vec_by_path->proc~json_clear_exceptions proc~json_get_string_vec_by_path->none~get proc~json_get_string_vec_by_path->proc~flag_not_found proc~json_string_info json_core%json_string_info none~string_info->proc~json_string_info proc~escape_string->proc~valid_json_hex proc~json_get_by_path_default->none~add proc~json_get_by_path_default->none~throw_exception proc~json_get_by_path_default->proc~json_value_create proc~json_get_by_path_default->proc~to_array proc~json_get_by_path_default->proc~to_null proc~json_get_by_path_default->proc~to_object proc~json_get_by_path_default->proc~json_clear_exceptions proc~json_get_by_path_default->proc~string_to_integer none~get_child json_core%get_child proc~json_get_by_path_default->none~get_child proc~json_get_by_path_jsonpath_bracket->none~add proc~json_get_by_path_jsonpath_bracket->none~throw_exception proc~json_get_by_path_jsonpath_bracket->proc~json_value_create proc~json_get_by_path_jsonpath_bracket->proc~to_null proc~json_get_by_path_jsonpath_bracket->proc~json_clear_exceptions proc~json_get_by_path_jsonpath_bracket->proc~string_to_integer proc~json_get_by_path_jsonpath_bracket->none~get_child proc~convert json_core%convert proc~json_get_by_path_jsonpath_bracket->proc~convert proc~json_get_by_path_rfc6901->none~throw_exception proc~json_get_by_path_rfc6901->proc~json_clear_exceptions proc~json_get_by_path_rfc6901->proc~string_to_integer proc~json_get_by_path_rfc6901->none~get_child proc~decode_rfc6901 decode_rfc6901 proc~json_get_by_path_rfc6901->proc~decode_rfc6901 proc~compact_real_string compact_real_string proc~real_to_string->proc~compact_real_string proc~json_value_get_child json_core%json_value_get_child none~get_child->proc~json_value_get_child proc~json_value_get_child_by_index json_core%json_value_get_child_by_index none~get_child->proc~json_value_get_child_by_index proc~json_value_get_child_by_name json_core%json_value_get_child_by_name none~get_child->proc~json_value_get_child_by_name proc~convert->none~throw_exception proc~convert->none~create_array proc~convert->none~create_null proc~convert->none~info none~create_object json_core%create_object proc~convert->none~create_object proc~json_value_replace json_core%json_value_replace proc~convert->proc~json_value_replace proc~replace_string replace_string proc~decode_rfc6901->proc~replace_string proc~json_string_info->none~throw_exception proc~json_string_info->none~info proc~json_string_info->proc~json_clear_exceptions proc~json_string_info->none~get proc~json_value_create_object json_core%json_value_create_object none~create_object->proc~json_value_create_object proc~json_value_get_child->none~throw_exception proc~json_value_get_child_by_index->none~throw_exception proc~json_value_get_child_by_index->proc~json_clear_exceptions proc~json_value_get_child_by_name->none~throw_exception proc~json_value_get_child_by_name->proc~json_clear_exceptions proc~name_equal json_core%name_equal proc~json_value_get_child_by_name->proc~name_equal none~insert_after json_core%insert_after proc~json_value_replace->none~insert_after proc~json_value_remove json_core%json_value_remove proc~json_value_replace->proc~json_value_remove proc~json_value_insert_after json_core%json_value_insert_after none~insert_after->proc~json_value_insert_after proc~json_value_insert_after_child_by_index json_core%json_value_insert_after_child_by_index none~insert_after->proc~json_value_insert_after_child_by_index proc~json_value_create_object->proc~json_value_create proc~json_value_create_object->proc~to_object proc~json_value_remove->none~destroy proc~name_strings_equal json_core%name_strings_equal proc~name_equal->proc~name_strings_equal proc~json_value_insert_after_child_by_index->none~get_child proc~json_value_insert_after_child_by_index->none~insert_after proc~lowercase_string lowercase_string proc~name_strings_equal->proc~lowercase_string

Called by

proc~~parse_object~~CalledByGraph proc~parse_object json_core%parse_object proc~parse_object->proc~parse_object proc~parse_value json_core%parse_value proc~parse_object->proc~parse_value proc~parse_value->proc~parse_object proc~parse_array json_core%parse_array proc~parse_value->proc~parse_array proc~json_parse_file json_core%json_parse_file proc~json_parse_file->proc~parse_value proc~json_parse_string json_core%json_parse_string proc~json_parse_string->proc~parse_value proc~parse_array->proc~parse_value none~deserialize json_core%deserialize none~deserialize->proc~json_parse_string none~load json_core%load none~load->proc~json_parse_file proc~json_file_load json_file%json_file_load proc~json_file_load->none~load proc~json_file_load_from_string json_file%json_file_load_from_string proc~json_file_load_from_string->none~deserialize proc~wrap_json_parse_string wrap_json_parse_string proc~wrap_json_parse_string->none~deserialize none~deserialize~2 json_file%deserialize none~deserialize~2->proc~json_file_load_from_string proc~assign_string_to_json_file json_file%assign_string_to_json_file proc~assign_string_to_json_file->none~deserialize~2 proc~initialize_json_file_from_string initialize_json_file_from_string proc~initialize_json_file_from_string->none~deserialize~2 proc~initialize_json_file_from_string_v2 initialize_json_file_from_string_v2 proc~initialize_json_file_from_string_v2->none~deserialize~2 proc~wrap_json_file_load_from_string wrap_json_file_load_from_string proc~wrap_json_file_load_from_string->none~deserialize~2 interface~json_file json_file interface~json_file->proc~initialize_json_file_from_string interface~json_file->proc~initialize_json_file_from_string_v2 proc~wrap_assign_string_to_json_file wrap_assign_string_to_json_file proc~wrap_assign_string_to_json_file->proc~assign_string_to_json_file proc~wrap_initialize_json_file_from_string wrap_initialize_json_file_from_string proc~wrap_initialize_json_file_from_string->proc~initialize_json_file_from_string proc~wrap_initialize_json_file_from_string_v2 wrap_initialize_json_file_from_string_v2 proc~wrap_initialize_json_file_from_string_v2->proc~initialize_json_file_from_string_v2

Source Code

    recursive subroutine parse_object(json, unit, str, parent, expecting_next_element)

    implicit none

    class(json_core),intent(inout)      :: json
    integer(IK),intent(in)              :: unit    !! file unit number (if parsing from a file)
    character(kind=CK,len=*),intent(in) :: str     !! JSON string (if parsing from a string)
    type(json_value),pointer            :: parent  !! the parsed object will be added as a child of this
    logical(LK),intent(in) :: expecting_next_element !! if true, this object is preceeded by a comma, so
                                                     !! we expect a valid object to exist. used to check
                                                     !! for trailing delimiters.

    type(json_value),pointer :: pair  !! temp variable
    logical(LK)              :: eof   !! end of file flag
    character(kind=CK,len=1) :: c     !! character returned by [[pop_char]]
#if defined __GFORTRAN__
    character(kind=CK,len=:),allocatable :: tmp  !! this is a work-around for a bug
                                                 !! in the gfortran 4.9 compiler.
#endif

    if (.not. json%exception_thrown) then

        !the routine is being called incorrectly.
        if (.not. associated(parent)) then
            call json%throw_exception('Error in parse_object: parent pointer not associated.')
        end if

        nullify(pair)    !probably not necessary

        ! pair name
        call json%pop_char(unit, str=str, eof=eof, skip_ws=.true., &
                           skip_comments=json%allow_comments, popped=c)
        if (eof) then
            call json%throw_exception('Error in parse_object:'//&
                                      ' Unexpected end of file while parsing start of object.')
            return
        else if (end_object == c) then
            ! end of an empty object
            if (expecting_next_element .and. .not. json%allow_trailing_comma) then
                ! this is a dangling comma.
                call json%throw_exception('Error in parse_object: '//&
                                          'Dangling comma when parsing an object.')
            end if
            return
        else if (quotation_mark == c) then
            call json_value_create(pair)
#if defined __GFORTRAN__
            call json%parse_string(unit,str,tmp)   ! write to a tmp variable because of
            pair%name = tmp                        ! a bug in 4.9 gfortran compiler.
            deallocate(tmp)
#else
            call json%parse_string(unit,str,pair%name)
#endif
            if (json%exception_thrown) then
                call json%destroy(pair)
                return
            end if
        else
            call json%throw_exception('Error in parse_object: Expecting string: "'//c//'"')
            return
        end if

        ! pair value
        call json%pop_char(unit, str=str, eof=eof, skip_ws=.true., &
                           skip_comments=json%allow_comments, popped=c)
        if (eof) then
            call json%destroy(pair)
            call json%throw_exception('Error in parse_object:'//&
                                      ' Unexpected end of file while parsing object member.')
            return
        else if (colon_char == c) then
            ! parse the value
            call json%parse_value(unit, str, pair)
            if (json%exception_thrown) then
                call json%destroy(pair)
                return
            else
                call json%add(parent, pair)
            end if
        else
            call json%destroy(pair)
            call json%throw_exception('Error in parse_object:'//&
                                      ' Expecting : and then a value: '//c)
            return
        end if

        ! another possible pair
        call json%pop_char(unit, str=str, eof=eof, skip_ws=.true., &
                           skip_comments=json%allow_comments, popped=c)
        if (eof) then
            call json%throw_exception('Error in parse_object: '//&
                                      'End of file encountered when parsing an object')
            return
        else if (delimiter == c) then
            ! read the next member
            call json%parse_object(unit = unit, str=str, parent = parent, &
                                   expecting_next_element=.true.)
        else if (end_object == c) then
            ! end of object
            return
        else
            call json%throw_exception('Error in parse_object: Expecting end of object: '//c)
            return
        end if

    end if

    end subroutine parse_object