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try_parse_field.hpp File Reference

Helper functions for parsing values of HTTP-fields. More...

`#include <restinio/helpers/easy_parser.hpp>`
`#include <restinio/http_headers.hpp>`
`#include <restinio/request_handler.hpp>`
`#include <restinio/variant.hpp>`
`#include <iostream>`

Go to the source code of this file.

## Classes

struct | restinio::http_field_parsers::field_not_found_t
| A special type to be returned in the case if HTTP-field isn't found in a request. More...
struct | restinio::http_field_parsers::try_extract_field_details::valid_field_type< typename, typename >
struct | restinio::http_field_parsers::try_extract_field_details::valid_field_type< T, restinio::utils::metaprogramming::void_t< std::enable_if_t< std::is_same< expected_t< T, restinio::easy_parser::parse_error_t >, decltype(T::try_parse(std::declval< string_view_t >())) >::value, bool > > >

## Namespaces

namespace | restinio
namespace | restinio::http_field_parsers
namespace | restinio::http_field_parsers::try_extract_field_details

## Typedefs

template<typename Parsed_Field_Type >
using | restinio::http_field_parsers::try_extract_field_details::result_variant_t = variant_t< Parsed_Field_Type, field_not_found_t, restinio::easy_parser::parse_error_t >
| Type of a variant to be returned as the result of attempt to parse HTTP-field.

## Functions

template<typename Parsed_Field_Type >
RESTINIO_NODISCARD result_variant_t< Parsed_Field_Type > | restinio::http_field_parsers::try_extract_field_details::try_extract_field_value_from (optional_t< string_view_t > opt_value, string_view_t default_value)
template<typename Parsed_Field_Type , typename Extra_Data >
RESTINIO_NODISCARD auto | restinio::http_field_parsers::try_parse_field (const generic_request_t< Extra_Data > &req, string_view_t field_name, string_view_t default_value=string_view_t{})
| A helper function for extraction and parsing a value of HTTP-field.
template<typename Parsed_Field_Type , typename Extra_Data >
RESTINIO_NODISCARD auto | restinio::http_field_parsers::try_parse_field (const generic_request_t< Extra_Data > &req, http_field_t field_id, string_view_t default_value=string_view_t{})
| A helper function for extraction and parsing a value of HTTP-field.

## Detailed Description

Helper functions for parsing values of HTTP-fields.

Since
  v.0.6.8

Definition in file try_parse_field.hpp.