Example #1
0
// run runs the state machine for the Scanner.
func (p *Parser) run() {
	ast, err := parse(p.query)
	if err != nil {
		fmt.Printf("BUG: unexpected parse error: %s", err)
		return
	}
	visitor_callbacks := C.struct_GraphQLAstVisitorCallbacks{
		visit_document:                 (C.visit_document_func)(C.process_visit_document_cgo),
		end_visit_document:             (C.end_visit_document_func)(C.process_end_visit_document_cgo),
		visit_operation_definition:     (C.visit_operation_definition_func)(C.process_visit_operation_definition_cgo),
		end_visit_operation_definition: (C.end_visit_operation_definition_func)(C.process_end_visit_operation_definition_cgo),
		visit_variable_definition:      (C.visit_variable_definition_func)(C.process_visit_variable_definition_cgo),
		end_visit_variable_definition:  (C.end_visit_variable_definition_func)(C.process_end_visit_variable_definition_cgo),
		visit_selection_set:            (C.visit_selection_set_func)(C.process_visit_selection_set_cgo),
		end_visit_selection_set:        (C.end_visit_selection_set_func)(C.process_end_visit_selection_set_cgo),
		visit_field:                    (C.visit_field_func)(C.process_visit_field_cgo),
		end_visit_field:                (C.end_visit_field_func)(C.process_end_visit_field_cgo),
		visit_argument:                 (C.visit_argument_func)(C.process_visit_argument_cgo),
		end_visit_argument:             (C.end_visit_argument_func)(C.process_end_visit_argument_cgo),
		visit_fragment_spread:          (C.visit_fragment_spread_func)(C.process_visit_fragment_spread_cgo),
		end_visit_fragment_spread:      (C.end_visit_fragment_spread_func)(C.process_end_visit_fragment_spread_cgo),
		visit_inline_fragment:          (C.visit_inline_fragment_func)(C.process_visit_inline_fragment_cgo),
		end_visit_inline_fragment:      (C.end_visit_inline_fragment_func)(C.process_end_visit_inline_fragment_cgo),
		visit_fragment_definition:      (C.visit_fragment_definition_func)(C.process_visit_fragment_definition_cgo),
		end_visit_fragment_definition:  (C.end_visit_fragment_definition_func)(C.process_end_visit_fragment_definition_cgo),
		visit_variable:                 (C.visit_variable_func)(C.process_visit_variable_cgo),
		end_visit_variable:             (C.end_visit_variable_func)(C.process_end_visit_variable_cgo),
		visit_int_value:                (C.visit_int_value_func)(C.process_visit_int_value_cgo),
		end_visit_int_value:            (C.end_visit_int_value_func)(C.process_end_visit_int_value_cgo),
		visit_float_value:              (C.visit_float_value_func)(C.process_visit_float_value_cgo),
		end_visit_float_value:          (C.end_visit_float_value_func)(C.process_end_visit_float_value_cgo),
		visit_string_value:             (C.visit_string_value_func)(C.process_visit_string_value_cgo),
		end_visit_string_value:         (C.end_visit_string_value_func)(C.process_end_visit_string_value_cgo),
		visit_boolean_value:            (C.visit_boolean_value_func)(C.process_visit_boolean_value_cgo),
		end_visit_boolean_value:        (C.end_visit_boolean_value_func)(C.process_end_visit_boolean_value_cgo),
		visit_enum_value:               (C.visit_enum_value_func)(C.process_visit_enum_value_cgo),
		end_visit_enum_value:           (C.end_visit_enum_value_func)(C.process_end_visit_enum_value_cgo),
		visit_array_value:              (C.visit_array_value_func)(C.process_visit_array_value_cgo),
		end_visit_array_value:          (C.end_visit_array_value_func)(C.process_end_visit_array_value_cgo),
		visit_object_value:             (C.visit_object_value_func)(C.process_visit_object_value_cgo),
		end_visit_object_value:         (C.end_visit_object_value_func)(C.process_end_visit_object_value_cgo),
		visit_object_field:             (C.visit_object_field_func)(C.process_visit_object_field_cgo),
		end_visit_object_field:         (C.end_visit_object_field_func)(C.process_end_visit_object_field_cgo),
		visit_directive:                (C.visit_directive_func)(C.process_visit_directive_cgo),
		end_visit_directive:            (C.end_visit_directive_func)(C.process_end_visit_directive_cgo),
		visit_named_type:               (C.visit_named_type_func)(C.process_visit_named_type_cgo),
		end_visit_named_type:           (C.end_visit_named_type_func)(C.process_end_visit_named_type_cgo),
		visit_list_type:                (C.visit_list_type_func)(C.process_visit_list_type_cgo),
		end_visit_list_type:            (C.end_visit_list_type_func)(C.process_end_visit_list_type_cgo),
		visit_non_null_type:            (C.visit_non_null_type_func)(C.process_visit_non_null_type_cgo),
		end_visit_non_null_type:        (C.end_visit_non_null_type_func)(C.process_end_visit_non_null_type_cgo),
		visit_name:                     (C.visit_name_func)(C.process_visit_name_cgo),
		end_visit_name:                 (C.end_visit_name_func)(C.process_end_visit_name_cgo),
	}
	C.graphql_node_visit(ast, &visitor_callbacks, unsafe.Pointer(p))

	C.graphql_node_free(ast)
}
Example #2
0
func main() {
	ast, err := parse("query myquery { myfield }")
	if err != nil {
		fmt.Printf("BUG: unexpected parse error: %s", err)
		return
	}
	visitor_callbacks := C.struct_GraphQLAstVisitorCallbacks{visit_field: (C.visit_field_func)(C.printField_cgo)}
	C.graphql_node_visit(ast, &visitor_callbacks, nil)

	C.graphql_node_free(ast)

	ast2, err2 := parse("query errorQuery on oops { myfield }")
	if err2 != nil {
		fmt.Printf("Example error: %s\n", err2)
	}
	if ast2 != nil {
		fmt.Printf("BUG: we should have got a null AST back, but we got %s\n", ast2)
	}
}