From 3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 Mon Sep 17 00:00:00 2001 From: Dimitri Staessens Date: Sun, 6 Oct 2019 21:37:45 +0200 Subject: build: Add some required modules for node --- node_modules/braces/lib/parsers.js | 360 +++++++++++++++++++++++++++++++++++++ 1 file changed, 360 insertions(+) create mode 100644 node_modules/braces/lib/parsers.js (limited to 'node_modules/braces/lib/parsers.js') diff --git a/node_modules/braces/lib/parsers.js b/node_modules/braces/lib/parsers.js new file mode 100644 index 0000000..8bf3e92 --- /dev/null +++ b/node_modules/braces/lib/parsers.js @@ -0,0 +1,360 @@ +'use strict'; + +var Node = require('snapdragon-node'); +var utils = require('./utils'); + +/** + * Braces parsers + */ + +module.exports = function(braces, options) { + braces.parser + .set('bos', function() { + if (!this.parsed) { + this.ast = this.nodes[0] = new Node(this.ast); + } + }) + + /** + * Character parsers + */ + + .set('escape', function() { + var pos = this.position(); + var m = this.match(/^(?:\\(.)|\$\{)/); + if (!m) return; + + var prev = this.prev(); + var last = utils.last(prev.nodes); + + var node = pos(new Node({ + type: 'text', + multiplier: 1, + val: m[0] + })); + + if (node.val === '\\\\') { + return node; + } + + if (node.val === '${') { + var str = this.input; + var idx = -1; + var ch; + + while ((ch = str[++idx])) { + this.consume(1); + node.val += ch; + if (ch === '\\') { + node.val += str[++idx]; + continue; + } + if (ch === '}') { + break; + } + } + } + + if (this.options.unescape !== false) { + node.val = node.val.replace(/\\([{}])/g, '$1'); + } + + if (last.val === '"' && this.input.charAt(0) === '"') { + last.val = node.val; + this.consume(1); + return; + } + + return concatNodes.call(this, pos, node, prev, options); + }) + + /** + * Brackets: "[...]" (basic, this is overridden by + * other parsers in more advanced implementations) + */ + + .set('bracket', function() { + var isInside = this.isInside('brace'); + var pos = this.position(); + var m = this.match(/^(?:\[([!^]?)([^\]]{2,}|\]-)(\]|[^*+?]+)|\[)/); + if (!m) return; + + var prev = this.prev(); + var val = m[0]; + var negated = m[1] ? '^' : ''; + var inner = m[2] || ''; + var close = m[3] || ''; + + if (isInside && prev.type === 'brace') { + prev.text = prev.text || ''; + prev.text += val; + } + + var esc = this.input.slice(0, 2); + if (inner === '' && esc === '\\]') { + inner += esc; + this.consume(2); + + var str = this.input; + var idx = -1; + var ch; + + while ((ch = str[++idx])) { + this.consume(1); + if (ch === ']') { + close = ch; + break; + } + inner += ch; + } + } + + return pos(new Node({ + type: 'bracket', + val: val, + escaped: close !== ']', + negated: negated, + inner: inner, + close: close + })); + }) + + /** + * Empty braces (we capture these early to + * speed up processing in the compiler) + */ + + .set('multiplier', function() { + var isInside = this.isInside('brace'); + var pos = this.position(); + var m = this.match(/^\{((?:,|\{,+\})+)\}/); + if (!m) return; + + this.multiplier = true; + var prev = this.prev(); + var val = m[0]; + + if (isInside && prev.type === 'brace') { + prev.text = prev.text || ''; + prev.text += val; + } + + var node = pos(new Node({ + type: 'text', + multiplier: 1, + match: m, + val: val + })); + + return concatNodes.call(this, pos, node, prev, options); + }) + + /** + * Open + */ + + .set('brace.open', function() { + var pos = this.position(); + var m = this.match(/^\{(?!(?:[^\\}]?|,+)\})/); + if (!m) return; + + var prev = this.prev(); + var last = utils.last(prev.nodes); + + // if the last parsed character was an extglob character + // we need to _not optimize_ the brace pattern because + // it might be mistaken for an extglob by a downstream parser + if (last && last.val && isExtglobChar(last.val.slice(-1))) { + last.optimize = false; + } + + var open = pos(new Node({ + type: 'brace.open', + val: m[0] + })); + + var node = pos(new Node({ + type: 'brace', + nodes: [] + })); + + node.push(open); + prev.push(node); + this.push('brace', node); + }) + + /** + * Close + */ + + .set('brace.close', function() { + var pos = this.position(); + var m = this.match(/^\}/); + if (!m || !m[0]) return; + + var brace = this.pop('brace'); + var node = pos(new Node({ + type: 'brace.close', + val: m[0] + })); + + if (!this.isType(brace, 'brace')) { + if (this.options.strict) { + throw new Error('missing opening "{"'); + } + node.type = 'text'; + node.multiplier = 0; + node.escaped = true; + return node; + } + + var prev = this.prev(); + var last = utils.last(prev.nodes); + if (last.text) { + var lastNode = utils.last(last.nodes); + if (lastNode.val === ')' && /[!@*?+]\(/.test(last.text)) { + var open = last.nodes[0]; + var text = last.nodes[1]; + if (open.type === 'brace.open' && text && text.type === 'text') { + text.optimize = false; + } + } + } + + if (brace.nodes.length > 2) { + var first = brace.nodes[1]; + if (first.type === 'text' && first.val === ',') { + brace.nodes.splice(1, 1); + brace.nodes.push(first); + } + } + + brace.push(node); + }) + + /** + * Capture boundary characters + */ + + .set('boundary', function() { + var pos = this.position(); + var m = this.match(/^[$^](?!\{)/); + if (!m) return; + return pos(new Node({ + type: 'text', + val: m[0] + })); + }) + + /** + * One or zero, non-comma characters wrapped in braces + */ + + .set('nobrace', function() { + var isInside = this.isInside('brace'); + var pos = this.position(); + var m = this.match(/^\{[^,]?\}/); + if (!m) return; + + var prev = this.prev(); + var val = m[0]; + + if (isInside && prev.type === 'brace') { + prev.text = prev.text || ''; + prev.text += val; + } + + return pos(new Node({ + type: 'text', + multiplier: 0, + val: val + })); + }) + + /** + * Text + */ + + .set('text', function() { + var isInside = this.isInside('brace'); + var pos = this.position(); + var m = this.match(/^((?!\\)[^${}[\]])+/); + if (!m) return; + + var prev = this.prev(); + var val = m[0]; + + if (isInside && prev.type === 'brace') { + prev.text = prev.text || ''; + prev.text += val; + } + + var node = pos(new Node({ + type: 'text', + multiplier: 1, + val: val + })); + + return concatNodes.call(this, pos, node, prev, options); + }); +}; + +/** + * Returns true if the character is an extglob character. + */ + +function isExtglobChar(ch) { + return ch === '!' || ch === '@' || ch === '*' || ch === '?' || ch === '+'; +} + +/** + * Combine text nodes, and calculate empty sets (`{,,}`) + * @param {Function} `pos` Function to calculate node position + * @param {Object} `node` AST node + * @return {Object} + */ + +function concatNodes(pos, node, parent, options) { + node.orig = node.val; + var prev = this.prev(); + var last = utils.last(prev.nodes); + var isEscaped = false; + + if (node.val.length > 1) { + var a = node.val.charAt(0); + var b = node.val.slice(-1); + + isEscaped = (a === '"' && b === '"') + || (a === "'" && b === "'") + || (a === '`' && b === '`'); + } + + if (isEscaped && options.unescape !== false) { + node.val = node.val.slice(1, node.val.length - 1); + node.escaped = true; + } + + if (node.match) { + var match = node.match[1]; + if (!match || match.indexOf('}') === -1) { + match = node.match[0]; + } + + // replace each set with a single "," + var val = match.replace(/\{/g, ',').replace(/\}/g, ''); + node.multiplier *= val.length; + node.val = ''; + } + + var simpleText = last.type === 'text' + && last.multiplier === 1 + && node.multiplier === 1 + && node.val; + + if (simpleText) { + last.val += node.val; + return; + } + + prev.push(node); +} -- cgit v1.2.3