gecko-dev/netwerk/base/http-sfv/nsIStructuredFieldValues.idl

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
/**
* Conceptually, there are three types of structured field (header) values:
*
* Item - can be an Integer, Decimal, String, Token, Byte Sequence, or Boolean.
* It can have associated Parameters.
* List - array of zero or more members, each of which can be an Item or an InnerList,
* both of which can be Parameterized.
* Dictionary - ordered map of name-value pairs, where the names are short textual strings
* and the values are Items or arrays of Items (represented with InnerList),
* both of which can be Parameterized. There can be zero or more members,
* and their names are unique in the scope of the Dictionary they occur within.
*
*
* There's also a few primitive types used to construct structured field values:
* - BareItem used as Item's value or as a parameter value in Parameters.
* - Parameters are an ordered map of key-value pairs that are associated with an Item or InnerList.
* The keys are unique within the scope the Parameters they occur within, and the values are BareItem.
* - InnerList is an array of zero or more Items. Can have Parameters.
* - ListEntry represents either Item or InnerList as a member of List or as member-value in Dictionary.
*/
/**
* nsISFVBareItem is a building block for Item header value (nsISFVItem) and Parameters (nsISFVParams).
* It can be of type BOOL, STRING, DECIMAL, INTEGER, TOKEN, BYTE_SEQUENCE.
* Each type is represented by its own interface which is used to create
* a bare item of that type.
*/
[scriptable, builtinclass, uuid(7072853f-215b-4a8a-92e5-9732bccc377b)]
interface nsISFVBareItem : nsISupports {
const long BOOL = 1;
const long STRING = 2;
const long DECIMAL = 3;
const long INTEGER = 4;
const long TOKEN = 5;
const long BYTE_SEQUENCE = 6;
/**
* Returns value associated with type of bare item.
* Used to identify type of bare item without querying for interface
* (like nsISFVString, etc).
*/
readonly attribute long long type;
};
[scriptable, builtinclass, uuid(843eea44-990a-422c-bbf2-2aa4ba9ee4d2)]
interface nsISFVInteger : nsISFVBareItem {
attribute long long value;
};
[scriptable, builtinclass, uuid(df6a0787-7caa-4fef-b145-08c1104c2fde)]
interface nsISFVString : nsISFVBareItem {
attribute ACString value;
};
[scriptable, builtinclass, uuid(d263c6d7-4123-4c39-a121-ccf874a19012)]
interface nsISFVBool : nsISFVBareItem {
attribute boolean value;
};
[scriptable, builtinclass, uuid(1098da8b-b4df-4526-b985-53dbd4160ad2)]
interface nsISFVDecimal : nsISFVBareItem {
attribute double value;
};
[scriptable, builtinclass, uuid(8ad33d52-b9b2-4a17-8aa8-991250fc1214)]
interface nsISFVToken : nsISFVBareItem {
attribute ACString value;
};
[scriptable, builtinclass, uuid(887eaef0-19fe-42bc-9a42-9ff773aa8fea)]
interface nsISFVByteSeq : nsISFVBareItem {
attribute ACString value;
};
/**
* nsISFVParams represents parameters, key-value pairs of ACString and nsISFVBareItem,
* which parametrize Item type header or InnerList type withing List type header.
*/
[scriptable, builtinclass, uuid(b1a397d7-3333-43e7-993a-fbe8ab90ee96)]
interface nsISFVParams : nsISupports {
/**
* Return value (nsISFVBareItem) stored for key, if it is present
*
* @throws NS_ERROR_UNEXPECTED if the key does not exist in parameters.
*/
nsISFVBareItem get(in ACString key);
/**
* Insert a new key-value pair.
* If an equivalent key already exists: the key remains and retains in its place in the order,
* its corresponding value is updated with the new value.
*
* @throws NS_ERROR_UNEXPECTED if supplied item does not implement nsISFVBareItem interface.
*/
void set(in ACString key, in nsISFVBareItem item);
/**
* Remove the key-value pair equivalent to key.
*
* @throws NS_ERROR_UNEXPECTED upon attempt to delete key that does not exist in parameters.
*/
void delete(in ACString key);
/**
* Returns array of keys.
*/
Array<ACString> keys();
};
/**
* nsISFVParametrizable is implemented for types that
* can be parametrized with nsISFVParams
*/
[scriptable, builtinclass, uuid(6c0399f8-01de-4b25-b339-68e35e8d2e49)]
interface nsISFVParametrizable : nsISupports {
readonly attribute nsISFVParams params;
};
/**
* nsISFVItemOrInnerList represents member in nsISFVList
* or member-value in nsISFVDictionary.
* nsISFVItemOrInnerList is implemented for
* nsISFVItem or nsISFVInnerList, both of which are used
* to create nsISFVList and nsISFVDictionary.
*/
[scriptable, builtinclass, uuid(99ac1b56-b5b3-44e7-ad96-db7444aae4b2)]
interface nsISFVItemOrInnerList : nsISFVParametrizable {
};
/**
* nsISFVSerialize indicates that object can be serialized into ACString.
*/
[scriptable, builtinclass, uuid(28b9215d-c131-413c-9482-0004a371a5ec)]
interface nsISFVSerialize : nsISupports {
ACString serialize();
};
/**
* nsISFVItem represents Item structured header value.
*/
[scriptable, builtinclass, uuid(abe8826b-6af7-4e54-bd2c-46ab231700ce)]
interface nsISFVItem : nsISFVItemOrInnerList {
readonly attribute nsISFVBareItem value;
ACString serialize();
};
/**
* nsISFVInnerList can be used as a member of nsISFVList
* or a member-value of nsISFVDictionary.
*/
[scriptable, builtinclass, uuid(b2e52be2-8488-41b2-9ee2-3c48d92d095c)]
interface nsISFVInnerList : nsISFVItemOrInnerList {
attribute Array<nsISFVItem> items;
};
/**
* nsISFVList represents List structured header value.
*/
[scriptable, builtinclass, uuid(02bb92a6-d1de-449c-b54f-d137f30c613d)]
interface nsISFVList : nsISFVSerialize {
/**
* Returns array of members.
* QueryInterface can be used on a member to get more specific type.
*/
attribute Array<nsISFVItemOrInnerList> members;
/**
* In case when header value is split across lines, it's possible
* this method parses supplied line and merges it with members of existing object.
*/
void parseMore(in ACString header);
};
/**
* nsISFVDictionary represents nsISFVDictionary structured header value.
*/
[scriptable, builtinclass, uuid(6642a7fe-7026-4eba-b730-05e230ee3437)]
interface nsISFVDictionary : nsISFVSerialize {
/**
* Return value (nsISFVItemOrInnerList) stored for key, if it is present.
* QueryInterface can be used on a value to get more specific type.
*
* @throws NS_ERROR_UNEXPECTED if the key does not exist in parameters.
*/
nsISFVItemOrInnerList get(in ACString key);
/**
* Insert a new key-value pair.
* If an equivalent key already exists: the key remains and retains in its place in the order,
* its corresponding value is updated with the new value.
*
* @throws NS_ERROR_UNEXPECTED if supplied item does not implement nsISFVItemOrInnerList interface.
*/
void set(in ACString key, in nsISFVItemOrInnerList member_value);
/**
* Remove the key-value pair equivalent to key.
*
* @throws NS_ERROR_UNEXPECTED upon attempt to delete key that does not exist in parameters.
*/
void delete(in ACString key);
/**
* Returns array of keys.
*/
Array<ACString> keys();
/**
* In case when header value is split across lines, it's possible
* this method parses supplied line and merges it with members of existing object.
*/
void parseMore(in ACString header);
};
/**
* nsISFVService provides a set of functions for working with HTTP header value as an object.
* It exposes functions for creating object from string containing header value,
* as well as individual components for manual structured header object creation.
*/
[scriptable, builtinclass, uuid(049f4be1-2f22-4438-a8da-518552ed390c)]
interface nsISFVService: nsISupports
{
/**
* Parses provided string into Dictionary header value (nsISFVDictionary).
*
* @throws NS_ERROR_FAILURE if parsing fails.
*/
nsISFVDictionary parseDictionary(in ACString header);
/**
* Parses provided string into List header value (nsISFVList).
*
* @throws NS_ERROR_FAILURE if parsing fails.
*/
nsISFVList parseList(in ACString header);
/**
* Parses provided string into Item header value (nsISFVItem).
*
* @throws NS_ERROR_FAILURE if parsing fails.
*/
nsISFVItem parseItem(in ACString header);
/**
* The following functions create bare item of specific type.
*/
nsISFVInteger newInteger(in long long value);
nsISFVBool newBool(in bool value);
nsISFVDecimal newDecimal(in double value);
nsISFVString newString(in ACString value);
nsISFVByteSeq newByteSequence(in ACString value);
nsISFVToken newToken(in ACString value);
/**
* Creates nsISFVParams with no parameters. In other words, it's an empty map byt default.
*/
nsISFVParams newParameters();
/**
* Creates nsISFVInnerList from nsISFVItem array and nsISFVParams.
*/
nsISFVInnerList newInnerList(in Array<nsISFVItem> items, in nsISFVParams params);
/**
* Creates nsISFVItem, which represents Item header value, from nsISFVBareItem and associated nsISFVParams.
*/
nsISFVItem newItem(in nsISFVBareItem value, in nsISFVParams params);
/**
* Creates nsISFVList, which represents List header value, from array of nsISFVItemOrInnerList.
* nsISFVItemOrInnerList represens either Item (nsISFVItem) or Inner List (nsISFVInnerList).
*/
nsISFVList newList(in Array<nsISFVItemOrInnerList> members);
/**
* Creates nsISFVDictionary representing Dictionary header value. It is empty by default.
*/
nsISFVDictionary newDictionary();
};