mirror of
https://github.com/ether/etherpad-lite.git
synced 2025-11-04 10:11:33 +01:00
558 lines
16 KiB
JavaScript
558 lines
16 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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module.exports = doJSON;
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// Take the lexed input, and return a JSON-encoded object
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// A module looks like this: https://gist.github.com/1777387
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var marked = require('marked');
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function doJSON(input, filename, cb) {
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var root = {source: filename};
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var stack = [root];
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var depth = 0;
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var current = root;
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var state = null;
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var lexed = marked.lexer(input);
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lexed.forEach(function (tok) {
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var type = tok.type;
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var text = tok.text;
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// <!-- type = module -->
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// This is for cases where the markdown semantic structure is lacking.
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if (type === 'paragraph' || type === 'html') {
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var metaExpr = /<!--([^=]+)=([^\-]+)-->\n*/g;
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text = text.replace(metaExpr, function(_0, k, v) {
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current[k.trim()] = v.trim();
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return '';
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});
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text = text.trim();
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if (!text) return;
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}
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if (type === 'heading' &&
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!text.trim().match(/^example/i)) {
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if (tok.depth - depth > 1) {
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return cb(new Error('Inappropriate heading level\n'+
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JSON.stringify(tok)));
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}
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// Sometimes we have two headings with a single
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// blob of description. Treat as a clone.
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if (current &&
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state === 'AFTERHEADING' &&
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depth === tok.depth) {
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var clone = current;
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current = newSection(tok);
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current.clone = clone;
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// don't keep it around on the stack.
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stack.pop();
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} else {
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// if the level is greater than the current depth,
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// then it's a child, so we should just leave the stack
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// as it is.
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// However, if it's a sibling or higher, then it implies
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// the closure of the other sections that came before.
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// root is always considered the level=0 section,
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// and the lowest heading is 1, so this should always
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// result in having a valid parent node.
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var d = tok.depth;
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while (d <= depth) {
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finishSection(stack.pop(), stack[stack.length - 1]);
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d++;
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}
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current = newSection(tok);
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}
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depth = tok.depth;
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stack.push(current);
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state = 'AFTERHEADING';
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return;
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} // heading
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// Immediately after a heading, we can expect the following
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//
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// { type: 'code', text: 'Stability: ...' },
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//
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// a list: starting with list_start, ending with list_end,
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// maybe containing other nested lists in each item.
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//
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// If one of these isnt' found, then anything that comes between
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// here and the next heading should be parsed as the desc.
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var stability
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if (state === 'AFTERHEADING') {
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if (type === 'code' &&
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(stability = text.match(/^Stability: ([0-5])(?:\s*-\s*)?(.*)$/))) {
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current.stability = parseInt(stability[1], 10);
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current.stabilityText = stability[2].trim();
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return;
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} else if (type === 'list_start' && !tok.ordered) {
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state = 'AFTERHEADING_LIST';
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current.list = current.list || [];
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current.list.push(tok);
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current.list.level = 1;
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} else {
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current.desc = current.desc || [];
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if (!Array.isArray(current.desc)) {
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current.shortDesc = current.desc;
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current.desc = [];
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}
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current.desc.push(tok);
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state = 'DESC';
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}
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return;
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}
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if (state === 'AFTERHEADING_LIST') {
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current.list.push(tok);
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if (type === 'list_start') {
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current.list.level++;
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} else if (type === 'list_end') {
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current.list.level--;
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}
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if (current.list.level === 0) {
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state = 'AFTERHEADING';
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processList(current);
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}
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return;
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}
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current.desc = current.desc || [];
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current.desc.push(tok);
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});
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// finish any sections left open
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while (root !== (current = stack.pop())) {
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finishSection(current, stack[stack.length - 1]);
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}
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return cb(null, root)
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}
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// go from something like this:
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// [ { type: 'list_item_start' },
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// { type: 'text',
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// text: '`settings` Object, Optional' },
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// { type: 'list_start', ordered: false },
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// { type: 'list_item_start' },
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// { type: 'text',
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// text: 'exec: String, file path to worker file. Default: `__filename`' },
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// { type: 'list_item_end' },
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// { type: 'list_item_start' },
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// { type: 'text',
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// text: 'args: Array, string arguments passed to worker.' },
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// { type: 'text',
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// text: 'Default: `process.argv.slice(2)`' },
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// { type: 'list_item_end' },
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// { type: 'list_item_start' },
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// { type: 'text',
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// text: 'silent: Boolean, whether or not to send output to parent\'s stdio.' },
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// { type: 'text', text: 'Default: `false`' },
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// { type: 'space' },
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// { type: 'list_item_end' },
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// { type: 'list_end' },
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// { type: 'list_item_end' },
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// { type: 'list_end' } ]
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// to something like:
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// [ { name: 'settings',
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// type: 'object',
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// optional: true,
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// settings:
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// [ { name: 'exec',
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// type: 'string',
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// desc: 'file path to worker file',
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// default: '__filename' },
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// { name: 'args',
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// type: 'array',
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// default: 'process.argv.slice(2)',
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// desc: 'string arguments passed to worker.' },
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// { name: 'silent',
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// type: 'boolean',
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// desc: 'whether or not to send output to parent\'s stdio.',
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// default: 'false' } ] } ]
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function processList(section) {
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var list = section.list;
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var values = [];
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var current;
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var stack = [];
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// for now, *just* build the heirarchical list
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list.forEach(function(tok) {
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var type = tok.type;
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if (type === 'space') return;
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if (type === 'list_item_start') {
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if (!current) {
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var n = {};
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values.push(n);
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current = n;
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} else {
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current.options = current.options || [];
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stack.push(current);
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var n = {};
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current.options.push(n);
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current = n;
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}
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return;
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} else if (type === 'list_item_end') {
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if (!current) {
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throw new Error('invalid list - end without current item\n' +
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JSON.stringify(tok) + '\n' +
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JSON.stringify(list));
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}
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current = stack.pop();
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} else if (type === 'text') {
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if (!current) {
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throw new Error('invalid list - text without current item\n' +
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JSON.stringify(tok) + '\n' +
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JSON.stringify(list));
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}
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current.textRaw = current.textRaw || '';
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current.textRaw += tok.text + ' ';
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}
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});
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// shove the name in there for properties, since they are always
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// just going to be the value etc.
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if (section.type === 'property' && values[0]) {
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values[0].textRaw = '`' + section.name + '` ' + values[0].textRaw;
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}
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// now pull the actual values out of the text bits.
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values.forEach(parseListItem);
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// Now figure out what this list actually means.
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// depending on the section type, the list could be different things.
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switch (section.type) {
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case 'ctor':
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case 'classMethod':
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case 'method':
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// each item is an argument, unless the name is 'return',
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// in which case it's the return value.
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section.signatures = section.signatures || [];
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var sig = {}
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section.signatures.push(sig);
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sig.params = values.filter(function(v) {
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if (v.name === 'return') {
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sig.return = v;
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return false;
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}
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return true;
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});
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parseSignature(section.textRaw, sig);
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break;
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case 'property':
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// there should be only one item, which is the value.
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// copy the data up to the section.
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var value = values[0] || {};
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delete value.name;
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section.typeof = value.type;
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delete value.type;
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Object.keys(value).forEach(function(k) {
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section[k] = value[k];
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});
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break;
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case 'event':
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// event: each item is an argument.
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section.params = values;
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break;
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}
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// section.listParsed = values;
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delete section.list;
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}
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// textRaw = "someobject.someMethod(a, [b=100], [c])"
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function parseSignature(text, sig) {
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var params = text.match(paramExpr);
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if (!params) return;
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params = params[1];
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// the ] is irrelevant. [ indicates optionalness.
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params = params.replace(/\]/g, '');
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params = params.split(/,/)
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params.forEach(function(p, i, _) {
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p = p.trim();
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if (!p) return;
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var param = sig.params[i];
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var optional = false;
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var def;
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// [foo] -> optional
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if (p.charAt(0) === '[') {
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optional = true;
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p = p.substr(1);
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}
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var eq = p.indexOf('=');
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if (eq !== -1) {
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def = p.substr(eq + 1);
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p = p.substr(0, eq);
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}
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if (!param) {
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param = sig.params[i] = { name: p };
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}
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// at this point, the name should match.
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if (p !== param.name) {
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console.error('Warning: invalid param "%s"', p);
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console.error(' > ' + JSON.stringify(param));
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console.error(' > ' + text);
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}
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if (optional) param.optional = true;
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if (def !== undefined) param.default = def;
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});
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}
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function parseListItem(item) {
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if (item.options) item.options.forEach(parseListItem);
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if (!item.textRaw) return;
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// the goal here is to find the name, type, default, and optional.
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// anything left over is 'desc'
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var text = item.textRaw.trim();
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// text = text.replace(/^(Argument|Param)s?\s*:?\s*/i, '');
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text = text.replace(/^, /, '').trim();
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var retExpr = /^returns?\s*:?\s*/i;
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var ret = text.match(retExpr);
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if (ret) {
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item.name = 'return';
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text = text.replace(retExpr, '');
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} else {
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var nameExpr = /^['`"]?([^'`": \{]+)['`"]?\s*:?\s*/;
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var name = text.match(nameExpr);
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if (name) {
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item.name = name[1];
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text = text.replace(nameExpr, '');
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}
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}
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text = text.trim();
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var defaultExpr = /\(default\s*[:=]?\s*['"`]?([^, '"`]*)['"`]?\)/i;
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var def = text.match(defaultExpr);
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if (def) {
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item.default = def[1];
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text = text.replace(defaultExpr, '');
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}
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text = text.trim();
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var typeExpr = /^\{([^\}]+)\}/;
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var type = text.match(typeExpr);
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if (type) {
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item.type = type[1];
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text = text.replace(typeExpr, '');
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}
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text = text.trim();
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var optExpr = /^Optional\.|(?:, )?Optional$/;
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var optional = text.match(optExpr);
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if (optional) {
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item.optional = true;
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text = text.replace(optExpr, '');
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}
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text = text.replace(/^\s*-\s*/, '');
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text = text.trim();
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if (text) item.desc = text;
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}
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function finishSection(section, parent) {
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if (!section || !parent) {
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throw new Error('Invalid finishSection call\n'+
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JSON.stringify(section) + '\n' +
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JSON.stringify(parent));
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}
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if (!section.type) {
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section.type = 'module';
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if (parent && (parent.type === 'misc')) {
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section.type = 'misc';
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}
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section.displayName = section.name;
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section.name = section.name.toLowerCase()
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.trim().replace(/\s+/g, '_');
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}
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if (section.desc && Array.isArray(section.desc)) {
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section.desc.links = section.desc.links || [];
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section.desc = marked.parser(section.desc);
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}
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if (!section.list) section.list = [];
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processList(section);
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// classes sometimes have various 'ctor' children
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// which are actually just descriptions of a constructor
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// class signature.
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// Merge them into the parent.
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if (section.type === 'class' && section.ctors) {
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section.signatures = section.signatures || [];
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var sigs = section.signatures;
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section.ctors.forEach(function(ctor) {
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ctor.signatures = ctor.signatures || [{}];
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ctor.signatures.forEach(function(sig) {
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sig.desc = ctor.desc;
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});
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sigs.push.apply(sigs, ctor.signatures);
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});
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delete section.ctors;
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}
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// properties are a bit special.
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// their "type" is the type of object, not "property"
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if (section.properties) {
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section.properties.forEach(function (p) {
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if (p.typeof) p.type = p.typeof;
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else delete p.type;
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delete p.typeof;
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});
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}
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// handle clones
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if (section.clone) {
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var clone = section.clone;
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delete section.clone;
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delete clone.clone;
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deepCopy(section, clone);
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finishSection(clone, parent);
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}
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var plur;
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if (section.type.slice(-1) === 's') {
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plur = section.type + 'es';
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} else if (section.type.slice(-1) === 'y') {
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plur = section.type.replace(/y$/, 'ies');
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} else {
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plur = section.type + 's';
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}
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// if the parent's type is 'misc', then it's just a random
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// collection of stuff, like the "globals" section.
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// Make the children top-level items.
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if (section.type === 'misc') {
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Object.keys(section).forEach(function(k) {
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switch (k) {
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case 'textRaw':
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case 'name':
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case 'type':
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case 'desc':
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case 'miscs':
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return;
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default:
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if (parent.type === 'misc') {
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return;
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}
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if (Array.isArray(k) && parent[k]) {
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parent[k] = parent[k].concat(section[k]);
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} else if (!parent[k]) {
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parent[k] = section[k];
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} else {
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// parent already has, and it's not an array.
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return;
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}
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}
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});
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}
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parent[plur] = parent[plur] || [];
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parent[plur].push(section);
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}
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// Not a general purpose deep copy.
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// But sufficient for these basic things.
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function deepCopy(src, dest) {
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Object.keys(src).filter(function(k) {
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return !dest.hasOwnProperty(k);
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}).forEach(function(k) {
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dest[k] = deepCopy_(src[k]);
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});
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}
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function deepCopy_(src) {
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if (!src) return src;
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if (Array.isArray(src)) {
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var c = new Array(src.length);
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src.forEach(function(v, i) {
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c[i] = deepCopy_(v);
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});
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return c;
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}
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if (typeof src === 'object') {
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var c = {};
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Object.keys(src).forEach(function(k) {
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c[k] = deepCopy_(src[k]);
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});
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return c;
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}
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return src;
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}
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// these parse out the contents of an H# tag
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var eventExpr = /^Event(?::|\s)+['"]?([^"']+).*$/i;
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var classExpr = /^Class:\s*([^ ]+).*?$/i;
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var propExpr = /^(?:property:?\s*)?[^\.]+\.([^ \.\(\)]+)\s*?$/i;
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var braceExpr = /^(?:property:?\s*)?[^\.\[]+(\[[^\]]+\])\s*?$/i;
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var classMethExpr =
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/^class\s*method\s*:?[^\.]+\.([^ \.\(\)]+)\([^\)]*\)\s*?$/i;
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var methExpr =
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/^(?:method:?\s*)?(?:[^\.]+\.)?([^ \.\(\)]+)\([^\)]*\)\s*?$/i;
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var newExpr = /^new ([A-Z][a-z]+)\([^\)]*\)\s*?$/;
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var paramExpr = /\((.*)\);?$/;
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|
|
function newSection(tok) {
|
|
var section = {};
|
|
// infer the type from the text.
|
|
var text = section.textRaw = tok.text;
|
|
if (text.match(eventExpr)) {
|
|
section.type = 'event';
|
|
section.name = text.replace(eventExpr, '$1');
|
|
} else if (text.match(classExpr)) {
|
|
section.type = 'class';
|
|
section.name = text.replace(classExpr, '$1');
|
|
} else if (text.match(braceExpr)) {
|
|
section.type = 'property';
|
|
section.name = text.replace(braceExpr, '$1');
|
|
} else if (text.match(propExpr)) {
|
|
section.type = 'property';
|
|
section.name = text.replace(propExpr, '$1');
|
|
} else if (text.match(classMethExpr)) {
|
|
section.type = 'classMethod';
|
|
section.name = text.replace(classMethExpr, '$1');
|
|
} else if (text.match(methExpr)) {
|
|
section.type = 'method';
|
|
section.name = text.replace(methExpr, '$1');
|
|
} else if (text.match(newExpr)) {
|
|
section.type = 'ctor';
|
|
section.name = text.replace(newExpr, '$1');
|
|
} else {
|
|
section.name = text;
|
|
}
|
|
return section;
|
|
}
|