utils/node_modules/@microsoft/api-extractor-model/lib/mixins/Excerpt.d.ts
2024-02-07 01:33:07 -05:00

113 lines
3.8 KiB
TypeScript

import type { DeclarationReference } from '@microsoft/tsdoc/lib-commonjs/beta/DeclarationReference';
/** @public */
export declare enum ExcerptTokenKind {
/**
* Generic text without any special properties
*/
Content = "Content",
/**
* A reference to an API declaration
*/
Reference = "Reference"
}
/**
* Used by {@link Excerpt} to indicate a range of indexes within an array of `ExcerptToken` objects.
*
* @public
*/
export interface IExcerptTokenRange {
/**
* The starting index of the span.
*/
startIndex: number;
/**
* The index of the last member of the span, plus one.
*
* @remarks
*
* If `startIndex` and `endIndex` are the same number, then the span is empty.
*/
endIndex: number;
}
/** @public */
export interface IExcerptToken {
readonly kind: ExcerptTokenKind;
text: string;
canonicalReference?: string;
}
/**
* Represents a fragment of text belonging to an {@link Excerpt} object.
*
* @public
*/
export declare class ExcerptToken {
private readonly _kind;
private readonly _text;
private readonly _canonicalReference;
constructor(kind: ExcerptTokenKind, text: string, canonicalReference?: DeclarationReference);
/**
* Indicates the kind of token.
*/
get kind(): ExcerptTokenKind;
/**
* The text fragment.
*/
get text(): string;
/**
* The hyperlink target for a token whose type is `ExcerptTokenKind.Reference`. For other token types,
* this property will be `undefined`.
*/
get canonicalReference(): DeclarationReference | undefined;
}
/**
* The `Excerpt` class is used by {@link ApiDeclaredItem} to represent a TypeScript code fragment that may be
* annotated with hyperlinks to declared types (and in the future, source code locations).
*
* @remarks
* API Extractor's .api.json file format stores excerpts compactly as a start/end indexes into an array of tokens.
* Every `ApiDeclaredItem` has a "main excerpt" corresponding to the full list of tokens. The declaration may
* also have have "captured" excerpts that correspond to subranges of tokens.
*
* For example, if the main excerpt is:
*
* ```
* function parse(s: string): Vector | undefined;
* ```
*
* ...then this entire signature is the "main excerpt", whereas the function's return type `Vector | undefined` is a
* captured excerpt. The `Vector` token might be a hyperlink to that API item.
*
* An excerpt may be empty (i.e. a token range containing zero tokens). For example, if a function's return value
* is not explicitly declared, then the returnTypeExcerpt will be empty. By contrast, a class constructor cannot
* have a return value, so ApiConstructor has no returnTypeExcerpt property at all.
*
* @public
*/
export declare class Excerpt {
/**
* The complete list of tokens for the source code fragment that this excerpt is based upon.
* If this object is the main excerpt, then it will span all of the tokens; otherwise, it will correspond to
* a range within the array.
*/
readonly tokens: ReadonlyArray<ExcerptToken>;
/**
* Specifies the excerpt's range within the `tokens` array.
*/
readonly tokenRange: Readonly<IExcerptTokenRange>;
/**
* The tokens spanned by this excerpt. It is the range of the `tokens` array as specified by the `tokenRange`
* property.
*/
readonly spannedTokens: ReadonlyArray<ExcerptToken>;
private _text;
constructor(tokens: ReadonlyArray<ExcerptToken>, tokenRange: IExcerptTokenRange);
/**
* The excerpted text, formed by concatenating the text of the `spannedTokens` strings.
*/
get text(): string;
/**
* Returns true if the excerpt is an empty range.
*/
get isEmpty(): boolean;
}
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