jsdoc-75lb
Version:
An API documentation generator for JavaScript.
503 lines (429 loc) • 15.3 kB
JavaScript
/**
A collection of functions relating to JSDoc symbol name manipulation.
@module jsdoc/name
@author Michael Mathews <micmath@gmail.com>
@license Apache License 2.0 - See file 'LICENSE.md' in this project.
*/
;
var _ = require('underscore');
var escape = require('escape-string-regexp');
var hasOwnProp = Object.prototype.hasOwnProperty;
/**
* Longnames that have a special meaning in JSDoc.
*
* @enum {string}
* @static
* @memberof module:jsdoc/name
*/
var LONGNAMES = exports.LONGNAMES = {
/** Longname used for doclets that do not have a longname, such as anonymous functions. */
ANONYMOUS: '<anonymous>',
/** Longname that represents global scope. */
GLOBAL: '<global>'
};
// Module namespace prefix.
var MODULE_NAMESPACE = 'module:';
/**
* Names and punctuation marks that identify doclet scopes.
*
* @enum {string}
* @static
* @memberof module:jsdoc/name
*/
var SCOPE = exports.SCOPE = {
NAMES: {
GLOBAL: 'global',
INNER: 'inner',
INSTANCE: 'instance',
STATIC: 'static'
},
PUNC: {
INNER: '~',
INSTANCE: '#',
STATIC: '.'
}
};
// For backwards compatibility, this enum must use lower-case keys
var scopeToPunc = exports.scopeToPunc = {
'inner': SCOPE.PUNC.INNER,
'instance': SCOPE.PUNC.INSTANCE,
'static': SCOPE.PUNC.STATIC
};
var puncToScope = exports.puncToScope = _.invert(scopeToPunc);
var DEFAULT_SCOPE = SCOPE.NAMES.STATIC;
var SCOPE_PUNC = _.values(SCOPE.PUNC);
var SCOPE_PUNC_STRING = '[' + SCOPE_PUNC.join() + ']';
var REGEXP_LEADING_SCOPE = new RegExp('^(' + SCOPE_PUNC_STRING + ')');
var REGEXP_TRAILING_SCOPE = new RegExp('(' + SCOPE_PUNC_STRING + ')$');
var DESCRIPTION = '(?:(?:[ \\t]*\\-\\s*|\\s+)(\\S[\\s\\S]*))?$';
var REGEXP_DESCRIPTION = new RegExp(DESCRIPTION);
var REGEXP_NAME_DESCRIPTION = new RegExp('^(\\[[^\\]]+\\]|\\S+)' + DESCRIPTION);
function nameIsLongname(name, memberof) {
var regexp = new RegExp('^' + escape(memberof) + SCOPE_PUNC_STRING);
return regexp.test(name);
}
function prototypeToPunc(name) {
// don't mangle symbols named "prototype"
if (name === 'prototype') {
return name;
}
return name.replace(/(?:^|\.)prototype\.?/g, SCOPE.PUNC.INSTANCE);
}
// TODO: deprecate exports.resolve in favor of a better name
/**
Resolves the longname, memberof, variation and name values of the given doclet.
@param {module:jsdoc/doclet.Doclet} doclet
*/
exports.resolve = function(doclet) {
var about = {};
var memberof = doclet.memberof || '';
var metaName;
var name = doclet.name ? String(doclet.name) : '';
var parentDoc;
var puncAndName;
var puncAndNameIndex;
// change MyClass.prototype.instanceMethod to MyClass#instanceMethod
// (but not in function params, which lack doclet.kind)
// TODO: check for specific doclet.kind values (probably function, class, and module)
if (name && doclet.kind) {
name = prototypeToPunc(name);
}
doclet.name = name;
// member of a var in an outer scope?
if (name && !memberof && doclet.meta.code && doclet.meta.code.funcscope) {
name = doclet.longname = doclet.meta.code.funcscope + SCOPE.PUNC.INNER + name;
}
if (memberof || doclet.forceMemberof) { // @memberof tag given
memberof = prototypeToPunc(memberof);
// the name is a complete longname, like @name foo.bar, @memberof foo
if (name && nameIsLongname(name, memberof) && name !== memberof) {
about = exports.shorten(name, (doclet.forceMemberof ? memberof : undefined));
}
// the name and memberof are identical and refer to a module,
// like @name module:foo, @memberof module:foo (probably a member like 'var exports')
else if (name && name === memberof && name.indexOf(MODULE_NAMESPACE) === 0) {
about = exports.shorten(name, (doclet.forceMemberof ? memberof : undefined));
}
// the name and memberof are identical, like @name foo, @memberof foo
else if (name && name === memberof) {
doclet.scope = doclet.scope || DEFAULT_SCOPE;
name = memberof + scopeToPunc[doclet.scope] + name;
about = exports.shorten(name, (doclet.forceMemberof ? memberof : undefined));
}
// like @memberof foo# or @memberof foo~
else if (name && REGEXP_TRAILING_SCOPE.test(memberof) ) {
about = exports.shorten(memberof + name, (doclet.forceMemberof ? memberof : undefined));
}
else if (name && doclet.scope) {
about = exports.shorten(memberof + (scopeToPunc[doclet.scope] || '') + name,
(doclet.forceMemberof ? memberof : undefined));
}
}
else { // no @memberof
about = exports.shorten(name);
}
if (about.name) {
doclet.name = about.name;
}
if (about.memberof) {
doclet.setMemberof(about.memberof);
}
if (about.longname && (!doclet.longname || doclet.longname === doclet.name)) {
doclet.setLongname(about.longname);
}
if (doclet.scope === SCOPE.NAMES.GLOBAL) { // via @global tag?
doclet.setLongname(doclet.name);
delete doclet.memberof;
}
else if (about.scope) {
if (about.memberof === LONGNAMES.GLOBAL) { // via @memberof <global> ?
doclet.scope = SCOPE.NAMES.GLOBAL;
}
else {
doclet.scope = puncToScope[about.scope];
}
}
else if (doclet.name && doclet.memberof && !doclet.longname) {
if ( REGEXP_LEADING_SCOPE.test(doclet.name) ) {
doclet.scope = puncToScope[RegExp.$1];
doclet.name = doclet.name.substr(1);
}
else if (doclet.meta.code && doclet.meta.code.name) {
// HACK: Handle cases where an ES 2015 class is a static memberof something else, and
// the class has instance members. In these cases, we have to detect the instance
// members' scope by looking at the meta info. There's almost certainly a better way to
// do this...
metaName = String(doclet.meta.code.name);
puncAndName = SCOPE.PUNC.INSTANCE + doclet.name;
puncAndNameIndex = metaName.indexOf(puncAndName);
if ( puncAndNameIndex !== -1 &&
(puncAndNameIndex === metaName.length - puncAndName.length) ) {
doclet.scope = SCOPE.NAMES.INSTANCE;
}
}
doclet.scope = doclet.scope || DEFAULT_SCOPE;
doclet.setLongname(doclet.memberof + scopeToPunc[doclet.scope] + doclet.name);
}
if (about.variation) {
doclet.variation = about.variation;
}
// if we never found a longname, just use an empty string
if (!doclet.longname) {
doclet.longname = '';
}
};
/**
@method module:jsdoc/name.applyNamespace
@param {string} longname The full longname of the symbol.
@param {string} ns The namespace to be applied.
@returns {string} The longname with the namespace applied.
*/
exports.applyNamespace = function(longname, ns) {
var nameParts = exports.shorten(longname);
var name = nameParts.name;
longname = nameParts.longname;
if ( !/^[a-zA-Z]+?:.+$/i.test(name) ) {
longname = longname.replace( new RegExp(escape(name) + '$'), ns + ':' + name );
}
return longname;
};
// TODO: docs
exports.stripNamespace = function(longname) {
return longname.replace(/^[a-zA-Z]+:/, '');
};
/**
* Check whether a parent longname is an ancestor of a child longname.
*
* @param {string} parent - The parent longname.
* @param {string} child - The child longname.
* @return {boolean} `true` if the parent is an ancestor of the child; otherwise, `false`.
*/
exports.hasAncestor = function(parent, child) {
var hasAncestor = false;
var memberof = child;
if (!parent || !child) {
return hasAncestor;
}
// fast path for obvious non-ancestors
if (child.indexOf(parent) !== 0) {
return hasAncestor;
}
do {
memberof = exports.shorten(memberof).memberof;
if (memberof === parent) {
hasAncestor = true;
}
} while (!hasAncestor && memberof);
return hasAncestor;
};
// TODO: docs
function atomize(longname, sliceChars, forcedMemberof) {
var i;
var memberof = '';
var name = '';
var parts;
var partsRegExp;
var scopePunc = '';
var token;
var tokens = [];
var variation;
// quoted strings in a longname are atomic, so we convert them to tokens:
// foo["bar"] => foo.@{1}@
// Foo.prototype["bar"] => Foo#@{1}
longname = longname.replace(/(prototype|#)?(\[?["'].+?["']\]?)/g, function($, p1, p2) {
var punc = '';
// is there a leading bracket?
if ( /^\[/.test(p2) ) {
// is it a static or instance member?
punc = p1 ? SCOPE.PUNC.INSTANCE : SCOPE.PUNC.STATIC;
p2 = p2.replace(/^\[/g, '')
.replace(/\]$/g, '');
}
token = '@{' + tokens.length + '}@';
tokens.push(p2);
return punc + token;
});
longname = prototypeToPunc(longname);
if (typeof forcedMemberof !== 'undefined') {
partsRegExp = new RegExp('^(.*?)([' + sliceChars.join() + ']?)$');
name = longname.substr(forcedMemberof.length);
parts = forcedMemberof.match(partsRegExp);
if (parts[1]) {
memberof = parts[1] || forcedMemberof;
}
if (parts[2]) {
scopePunc = parts[2];
}
}
else if (longname) {
parts = (longname.match(new RegExp('^(:?(.+)([' + sliceChars.join() + ']))?(.+?)$')) || [])
.reverse();
name = parts[0] || '';
scopePunc = parts[1] || '';
memberof = parts[2] || '';
}
// like /** @name foo.bar(2) */
if ( /(.+)\(([^)]+)\)$/.test(name) ) {
name = RegExp.$1;
variation = RegExp.$2;
}
// restore quoted strings
i = tokens.length;
while (i--) {
longname = longname.replace('@{' + i + '}@', tokens[i]);
memberof = memberof.replace('@{' + i + '}@', tokens[i]);
scopePunc = scopePunc.replace('@{' + i + '}@', tokens[i]);
name = name.replace('@{' + i + '}@', tokens[i]);
}
return {
longname: longname,
memberof: memberof,
scope: scopePunc,
name: name,
variation: variation
};
}
// TODO: deprecate exports.shorten in favor of a better name
/**
Given a longname like "a.b#c(2)", slice it up into an object
containing the memberof, the scope, the name, and variation.
@param {string} longname
@param {string} forcedMemberof
@returns {object} Representing the properties of the given name.
*/
exports.shorten = function(longname, forcedMemberof) {
return atomize(longname, SCOPE_PUNC, forcedMemberof);
};
// TODO: docs
exports.combine = function(parts) {
return [
(parts.memberof || ''),
(parts.scope || ''),
(parts.name || ''),
(parts.variation || '')
].join('');
};
// TODO: docs
exports.stripVariation = function(name) {
var parts = exports.shorten(name);
parts.variation = '';
return exports.combine(parts);
};
function splitLongname(longname, options) {
var chunks = [];
var currentNameInfo;
var nameInfo = {};
var previousName = longname;
var splitters = SCOPE_PUNC.concat('/');
options = _.defaults(options || {}, {
includeVariation: true
});
do {
if (!options.includeVariation) {
previousName = exports.stripVariation(previousName);
}
currentNameInfo = nameInfo[previousName] = atomize(previousName, splitters);
previousName = currentNameInfo.memberof;
chunks.push(currentNameInfo.scope + currentNameInfo.name);
} while (previousName);
return {
chunks: chunks.reverse(),
nameInfo: nameInfo
};
}
// TODO: docs
exports.longnamesToTree = function longnamesToTree(longnames, doclets) {
var splitOptions = { includeVariation: false };
var tree = {};
longnames.forEach(function(longname) {
var currentLongname = '';
var currentParent = tree;
var nameInfo;
var processed;
// don't try to add empty longnames to the tree
if (!longname) {
return;
}
processed = splitLongname(longname, splitOptions);
nameInfo = processed.nameInfo;
processed.chunks.forEach(function(chunk) {
currentLongname += chunk;
if (currentParent !== tree) {
currentParent.children = currentParent.children || {};
currentParent = currentParent.children;
}
if (!hasOwnProp.call(currentParent, chunk)) {
currentParent[chunk] = nameInfo[currentLongname];
}
if (currentParent[chunk]) {
currentParent[chunk].doclet = doclets ? doclets[currentLongname] : null;
currentParent = currentParent[chunk];
}
});
});
return tree;
};
/**
Split a string that starts with a name and ends with a description into its parts.
Allows the defaultvalue (if present) to contain brackets. If the name is found to have
mismatched brackets, null is returned.
@param {string} nameDesc
@returns {object} Hash with "name" and "description" properties.
*/
function splitNameMatchingBrackets(nameDesc) {
var buffer = [];
var c;
var stack = 0;
var stringEnd = null;
for (var i = 0; i < nameDesc.length; ++i) {
c = nameDesc[i];
buffer.push(c);
if (stringEnd) {
if (c === '\\' && i + 1 < nameDesc.length) {
buffer.push(nameDesc[++i]);
} else if (c === stringEnd) {
stringEnd = null;
}
} else if (c === '"' || c === "'") {
stringEnd = c;
} else if (c === '[') {
++stack;
} else if (c === ']') {
if (--stack === 0) {
break;
}
}
}
if (stack || stringEnd) {
return null;
}
nameDesc.substr(i).match(REGEXP_DESCRIPTION);
return {
name: buffer.join(''),
description: RegExp.$1
};
}
// TODO: deprecate exports.splitName in favor of a better name
/**
Split a string that starts with a name and ends with a description into its parts.
@param {string} nameDesc
@returns {object} Hash with "name" and "description" properties.
*/
exports.splitName = function(nameDesc) {
// like: name, [name], name text, [name] text, name - text, or [name] - text
// the hyphen must be on the same line as the name; this prevents us from treating a Markdown
// dash as a separator
// optional values get special treatment
var result = null;
if (nameDesc[0] === '[') {
result = splitNameMatchingBrackets(nameDesc);
if (result !== null) {
return result;
}
}
nameDesc.match(REGEXP_NAME_DESCRIPTION);
return {
name: RegExp.$1,
description: RegExp.$2
};
};