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network-visualization/node_modules/snapdragon/lib/compiler.js

@@ -0,0 +1,177 @@
+'use strict';
+
+var use = require('use');
+var define = require('define-property');
+var debug = require('debug')('snapdragon:compiler');
+var utils = require('./utils');
+
+/**
+ * Create a new `Compiler` with the given `options`.
+ * @param {Object} `options`
+ */
+
+function Compiler(options, state) {
+  debug('initializing', __filename);
+  this.options = utils.extend({source: 'string'}, options);
+  this.state = state || {};
+  this.compilers = {};
+  this.output = '';
+  this.set('eos', function(node) {
+    return this.emit(node.val, node);
+  });
+  this.set('noop', function(node) {
+    return this.emit(node.val, node);
+  });
+  this.set('bos', function(node) {
+    return this.emit(node.val, node);
+  });
+  use(this);
+}
+
+/**
+ * Prototype methods
+ */
+
+Compiler.prototype = {
+
+  /**
+   * Throw an error message with details including the cursor position.
+   * @param {String} `msg` Message to use in the Error.
+   */
+
+  error: function(msg, node) {
+    var pos = node.position || {start: {column: 0}};
+    var message = this.options.source + ' column:' + pos.start.column + ': ' + msg;
+
+    var err = new Error(message);
+    err.reason = msg;
+    err.column = pos.start.column;
+    err.source = this.pattern;
+
+    if (this.options.silent) {
+      this.errors.push(err);
+    } else {
+      throw err;
+    }
+  },
+
+  /**
+   * Define a non-enumberable property on the `Compiler` instance.
+   *
+   * ```js
+   * compiler.define('foo', 'bar');
+   * ```
+   * @name .define
+   * @param {String} `key` propery name
+   * @param {any} `val` property value
+   * @return {Object} Returns the Compiler instance for chaining.
+   * @api public
+   */
+
+  define: function(key, val) {
+    define(this, key, val);
+    return this;
+  },
+
+  /**
+   * Emit `node.val`
+   */
+
+  emit: function(str, node) {
+    this.output += str;
+    return str;
+  },
+
+  /**
+   * Add a compiler `fn` with the given `name`
+   */
+
+  set: function(name, fn) {
+    this.compilers[name] = fn;
+    return this;
+  },
+
+  /**
+   * Get compiler `name`.
+   */
+
+  get: function(name) {
+    return this.compilers[name];
+  },
+
+  /**
+   * Get the previous AST node.
+   */
+
+  prev: function(n) {
+    return this.ast.nodes[this.idx - (n || 1)] || { type: 'bos', val: '' };
+  },
+
+  /**
+   * Get the next AST node.
+   */
+
+  next: function(n) {
+    return this.ast.nodes[this.idx + (n || 1)] || { type: 'eos', val: '' };
+  },
+
+  /**
+   * Visit `node`.
+   */
+
+  visit: function(node, nodes, i) {
+    var fn = this.compilers[node.type];
+    this.idx = i;
+
+    if (typeof fn !== 'function') {
+      throw this.error('compiler "' + node.type + '" is not registered', node);
+    }
+    return fn.call(this, node, nodes, i);
+  },
+
+  /**
+   * Map visit over array of `nodes`.
+   */
+
+  mapVisit: function(nodes) {
+    if (!Array.isArray(nodes)) {
+      throw new TypeError('expected an array');
+    }
+    var len = nodes.length;
+    var idx = -1;
+    while (++idx < len) {
+      this.visit(nodes[idx], nodes, idx);
+    }
+    return this;
+  },
+
+  /**
+   * Compile `ast`.
+   */
+
+  compile: function(ast, options) {
+    var opts = utils.extend({}, this.options, options);
+    this.ast = ast;
+    this.parsingErrors = this.ast.errors;
+    this.output = '';
+
+    // source map support
+    if (opts.sourcemap) {
+      var sourcemaps = require('./source-maps');
+      sourcemaps(this);
+      this.mapVisit(this.ast.nodes);
+      this.applySourceMaps();
+      this.map = opts.sourcemap === 'generator' ? this.map : this.map.toJSON();
+      return this;
+    }
+
+    this.mapVisit(this.ast.nodes);
+    return this;
+  }
+};
+
+/**
+ * Expose `Compiler`
+ */
+
+module.exports = Compiler;

network-visualization/node_modules/snapdragon/lib/parser.js

@@ -0,0 +1,533 @@
+'use strict';
+
+var use = require('use');
+var util = require('util');
+var Cache = require('map-cache');
+var define = require('define-property');
+var debug = require('debug')('snapdragon:parser');
+var Position = require('./position');
+var utils = require('./utils');
+
+/**
+ * Create a new `Parser` with the given `input` and `options`.
+ * @param {String} `input`
+ * @param {Object} `options`
+ * @api public
+ */
+
+function Parser(options) {
+  debug('initializing', __filename);
+  this.options = utils.extend({source: 'string'}, options);
+  this.init(this.options);
+  use(this);
+}
+
+/**
+ * Prototype methods
+ */
+
+Parser.prototype = {
+  constructor: Parser,
+
+  init: function(options) {
+    this.orig = '';
+    this.input = '';
+    this.parsed = '';
+
+    this.column = 1;
+    this.line = 1;
+
+    this.regex = new Cache();
+    this.errors = this.errors || [];
+    this.parsers = this.parsers || {};
+    this.types = this.types || [];
+    this.sets = this.sets || {};
+    this.fns = this.fns || [];
+    this.currentType = 'root';
+
+    var pos = this.position();
+    this.bos = pos({type: 'bos', val: ''});
+
+    this.ast = {
+      type: 'root',
+      errors: this.errors,
+      nodes: [this.bos]
+    };
+
+    define(this.bos, 'parent', this.ast);
+    this.nodes = [this.ast];
+
+    this.count = 0;
+    this.setCount = 0;
+    this.stack = [];
+  },
+
+  /**
+   * Throw a formatted error with the cursor column and `msg`.
+   * @param {String} `msg` Message to use in the Error.
+   */
+
+  error: function(msg, node) {
+    var pos = node.position || {start: {column: 0, line: 0}};
+    var line = pos.start.line;
+    var column = pos.start.column;
+    var source = this.options.source;
+
+    var message = source + ' <line:' + line + ' column:' + column + '>: ' + msg;
+    var err = new Error(message);
+    err.source = source;
+    err.reason = msg;
+    err.pos = pos;
+
+    if (this.options.silent) {
+      this.errors.push(err);
+    } else {
+      throw err;
+    }
+  },
+
+  /**
+   * Define a non-enumberable property on the `Parser` instance.
+   *
+   * ```js
+   * parser.define('foo', 'bar');
+   * ```
+   * @name .define
+   * @param {String} `key` propery name
+   * @param {any} `val` property value
+   * @return {Object} Returns the Parser instance for chaining.
+   * @api public
+   */
+
+  define: function(key, val) {
+    define(this, key, val);
+    return this;
+  },
+
+  /**
+   * Mark position and patch `node.position`.
+   */
+
+  position: function() {
+    var start = { line: this.line, column: this.column };
+    var self = this;
+
+    return function(node) {
+      define(node, 'position', new Position(start, self));
+      return node;
+    };
+  },
+
+  /**
+   * Set parser `name` with the given `fn`
+   * @param {String} `name`
+   * @param {Function} `fn`
+   * @api public
+   */
+
+  set: function(type, fn) {
+    if (this.types.indexOf(type) === -1) {
+      this.types.push(type);
+    }
+    this.parsers[type] = fn.bind(this);
+    return this;
+  },
+
+  /**
+   * Get parser `name`
+   * @param {String} `name`
+   * @api public
+   */
+
+  get: function(name) {
+    return this.parsers[name];
+  },
+
+  /**
+   * Push a `token` onto the `type` stack.
+   *
+   * @param {String} `type`
+   * @return {Object} `token`
+   * @api public
+   */
+
+  push: function(type, token) {
+    this.sets[type] = this.sets[type] || [];
+    this.count++;
+    this.stack.push(token);
+    return this.sets[type].push(token);
+  },
+
+  /**
+   * Pop a token off of the `type` stack
+   * @param {String} `type`
+   * @returns {Object} Returns a token
+   * @api public
+   */
+
+  pop: function(type) {
+    this.sets[type] = this.sets[type] || [];
+    this.count--;
+    this.stack.pop();
+    return this.sets[type].pop();
+  },
+
+  /**
+   * Return true if inside a `stack` node. Types are `braces`, `parens` or `brackets`.
+   *
+   * @param {String} `type`
+   * @return {Boolean}
+   * @api public
+   */
+
+  isInside: function(type) {
+    this.sets[type] = this.sets[type] || [];
+    return this.sets[type].length > 0;
+  },
+
+  /**
+   * Return true if `node` is the given `type`.
+   *
+   * ```js
+   * parser.isType(node, 'brace');
+   * ```
+   * @param {Object} `node`
+   * @param {String} `type`
+   * @return {Boolean}
+   * @api public
+   */
+
+  isType: function(node, type) {
+    return node && node.type === type;
+  },
+
+  /**
+   * Get the previous AST node
+   * @return {Object}
+   */
+
+  prev: function(n) {
+    return this.stack.length > 0
+      ? utils.last(this.stack, n)
+      : utils.last(this.nodes, n);
+  },
+
+  /**
+   * Update line and column based on `str`.
+   */
+
+  consume: function(len) {
+    this.input = this.input.substr(len);
+  },
+
+  /**
+   * Update column based on `str`.
+   */
+
+  updatePosition: function(str, len) {
+    var lines = str.match(/\n/g);
+    if (lines) this.line += lines.length;
+    var i = str.lastIndexOf('\n');
+    this.column = ~i ? len - i : this.column + len;
+    this.parsed += str;
+    this.consume(len);
+  },
+
+  /**
+   * Match `regex`, return captures, and update the cursor position by `match[0]` length.
+   * @param {RegExp} `regex`
+   * @return {Object}
+   */
+
+  match: function(regex) {
+    var m = regex.exec(this.input);
+    if (m) {
+      this.updatePosition(m[0], m[0].length);
+      return m;
+    }
+  },
+
+  /**
+   * Capture `type` with the given regex.
+   * @param {String} `type`
+   * @param {RegExp} `regex`
+   * @return {Function}
+   */
+
+  capture: function(type, regex) {
+    if (typeof regex === 'function') {
+      return this.set.apply(this, arguments);
+    }
+
+    this.regex.set(type, regex);
+    this.set(type, function() {
+      var parsed = this.parsed;
+      var pos = this.position();
+      var m = this.match(regex);
+      if (!m || !m[0]) return;
+
+      var prev = this.prev();
+      var node = pos({
+        type: type,
+        val: m[0],
+        parsed: parsed,
+        rest: this.input
+      });
+
+      if (m[1]) {
+        node.inner = m[1];
+      }
+
+      define(node, 'inside', this.stack.length > 0);
+      define(node, 'parent', prev);
+      prev.nodes.push(node);
+    }.bind(this));
+    return this;
+  },
+
+  /**
+   * Create a parser with open and close for parens,
+   * brackets or braces
+   */
+
+  capturePair: function(type, openRegex, closeRegex, fn) {
+    this.sets[type] = this.sets[type] || [];
+
+    /**
+     * Open
+     */
+
+    this.set(type + '.open', function() {
+      var parsed = this.parsed;
+      var pos = this.position();
+      var m = this.match(openRegex);
+      if (!m || !m[0]) return;
+
+      var val = m[0];
+      this.setCount++;
+      this.specialChars = true;
+      var open = pos({
+        type: type + '.open',
+        val: val,
+        rest: this.input
+      });
+
+      if (typeof m[1] !== 'undefined') {
+        open.inner = m[1];
+      }
+
+      var prev = this.prev();
+      var node = pos({
+        type: type,
+        nodes: [open]
+      });
+
+      define(node, 'rest', this.input);
+      define(node, 'parsed', parsed);
+      define(node, 'prefix', m[1]);
+      define(node, 'parent', prev);
+      define(open, 'parent', node);
+
+      if (typeof fn === 'function') {
+        fn.call(this, open, node);
+      }
+
+      this.push(type, node);
+      prev.nodes.push(node);
+    });
+
+    /**
+     * Close
+     */
+
+    this.set(type + '.close', function() {
+      var pos = this.position();
+      var m = this.match(closeRegex);
+      if (!m || !m[0]) return;
+
+      var parent = this.pop(type);
+      var node = pos({
+        type: type + '.close',
+        rest: this.input,
+        suffix: m[1],
+        val: m[0]
+      });
+
+      if (!this.isType(parent, type)) {
+        if (this.options.strict) {
+          throw new Error('missing opening "' + type + '"');
+        }
+
+        this.setCount--;
+        node.escaped = true;
+        return node;
+      }
+
+      if (node.suffix === '\\') {
+        parent.escaped = true;
+        node.escaped = true;
+      }
+
+      parent.nodes.push(node);
+      define(node, 'parent', parent);
+    });
+
+    return this;
+  },
+
+  /**
+   * Capture end-of-string
+   */
+
+  eos: function() {
+    var pos = this.position();
+    if (this.input) return;
+    var prev = this.prev();
+
+    while (prev.type !== 'root' && !prev.visited) {
+      if (this.options.strict === true) {
+        throw new SyntaxError('invalid syntax:' + util.inspect(prev, null, 2));
+      }
+
+      if (!hasDelims(prev)) {
+        prev.parent.escaped = true;
+        prev.escaped = true;
+      }
+
+      visit(prev, function(node) {
+        if (!hasDelims(node.parent)) {
+          node.parent.escaped = true;
+          node.escaped = true;
+        }
+      });
+
+      prev = prev.parent;
+    }
+
+    var tok = pos({
+      type: 'eos',
+      val: this.append || ''
+    });
+
+    define(tok, 'parent', this.ast);
+    return tok;
+  },
+
+  /**
+   * Run parsers to advance the cursor position
+   */
+
+  next: function() {
+    var parsed = this.parsed;
+    var len = this.types.length;
+    var idx = -1;
+    var tok;
+
+    while (++idx < len) {
+      if ((tok = this.parsers[this.types[idx]].call(this))) {
+        define(tok, 'rest', this.input);
+        define(tok, 'parsed', parsed);
+        this.last = tok;
+        return tok;
+      }
+    }
+  },
+
+  /**
+   * Parse the given string.
+   * @return {Array}
+   */
+
+  parse: function(input) {
+    if (typeof input !== 'string') {
+      throw new TypeError('expected a string');
+    }
+
+    this.init(this.options);
+    this.orig = input;
+    this.input = input;
+    var self = this;
+
+    function parse() {
+      // check input before calling `.next()`
+      input = self.input;
+
+      // get the next AST ndoe
+      var node = self.next();
+      if (node) {
+        var prev = self.prev();
+        if (prev) {
+          define(node, 'parent', prev);
+          if (prev.nodes) {
+            prev.nodes.push(node);
+          }
+        }
+
+        if (self.sets.hasOwnProperty(prev.type)) {
+          self.currentType = prev.type;
+        }
+      }
+
+      // if we got here but input is not changed, throw an error
+      if (self.input && input === self.input) {
+        throw new Error('no parsers registered for: "' + self.input.slice(0, 5) + '"');
+      }
+    }
+
+    while (this.input) parse();
+    if (this.stack.length && this.options.strict) {
+      var node = this.stack.pop();
+      throw this.error('missing opening ' + node.type + ': "' + this.orig + '"');
+    }
+
+    var eos = this.eos();
+    var tok = this.prev();
+    if (tok.type !== 'eos') {
+      this.ast.nodes.push(eos);
+    }
+
+    return this.ast;
+  }
+};
+
+/**
+ * Visit `node` with the given `fn`
+ */
+
+function visit(node, fn) {
+  if (!node.visited) {
+    define(node, 'visited', true);
+    return node.nodes ? mapVisit(node.nodes, fn) : fn(node);
+  }
+  return node;
+}
+
+/**
+ * Map visit over array of `nodes`.
+ */
+
+function mapVisit(nodes, fn) {
+  var len = nodes.length;
+  var idx = -1;
+  while (++idx < len) {
+    visit(nodes[idx], fn);
+  }
+}
+
+function hasOpen(node) {
+  return node.nodes && node.nodes[0].type === (node.type + '.open');
+}
+
+function hasClose(node) {
+  return node.nodes && utils.last(node.nodes).type === (node.type + '.close');
+}
+
+function hasDelims(node) {
+  return hasOpen(node) && hasClose(node);
+}
+
+/**
+ * Expose `Parser`
+ */
+
+module.exports = Parser;

network-visualization/node_modules/snapdragon/lib/position.js

@@ -0,0 +1,14 @@
+'use strict';
+
+var define = require('define-property');
+
+/**
+ * Store position for a node
+ */
+
+module.exports = function Position(start, parser) {
+  this.start = start;
+  this.end = { line: parser.line, column: parser.column };
+  define(this, 'content', parser.orig);
+  define(this, 'source', parser.options.source);
+};

network-visualization/node_modules/snapdragon/lib/source-maps.js

@@ -0,0 +1,145 @@
+'use strict';
+
+var fs = require('fs');
+var path = require('path');
+var define = require('define-property');
+var utils = require('./utils');
+
+/**
+ * Expose `mixin()`.
+ * This code is based on `source-maps-support.js` in reworkcss/css
+ * https://github.com/reworkcss/css/blob/master/lib/stringify/source-map-support.js
+ * Copyright (c) 2012 TJ Holowaychuk <tj@vision-media.ca>
+ */
+
+module.exports = mixin;
+
+/**
+ * Mixin source map support into `compiler`.
+ *
+ * @param {Object} `compiler`
+ * @api public
+ */
+
+function mixin(compiler) {
+  define(compiler, '_comment', compiler.comment);
+  compiler.map = new utils.SourceMap.SourceMapGenerator();
+  compiler.position = { line: 1, column: 1 };
+  compiler.content = {};
+  compiler.files = {};
+
+  for (var key in exports) {
+    define(compiler, key, exports[key]);
+  }
+}
+
+/**
+ * Update position.
+ *
+ * @param {String} str
+ */
+
+exports.updatePosition = function(str) {
+  var lines = str.match(/\n/g);
+  if (lines) this.position.line += lines.length;
+  var i = str.lastIndexOf('\n');
+  this.position.column = ~i ? str.length - i : this.position.column + str.length;
+};
+
+/**
+ * Emit `str` with `position`.
+ *
+ * @param {String} str
+ * @param {Object} [pos]
+ * @return {String}
+ */
+
+exports.emit = function(str, node) {
+  var position = node.position || {};
+  var source = position.source;
+  if (source) {
+    if (position.filepath) {
+      source = utils.unixify(position.filepath);
+    }
+
+    this.map.addMapping({
+      source: source,
+      generated: {
+        line: this.position.line,
+        column: Math.max(this.position.column - 1, 0)
+      },
+      original: {
+        line: position.start.line,
+        column: position.start.column - 1
+      }
+    });
+
+    if (position.content) {
+      this.addContent(source, position);
+    }
+    if (position.filepath) {
+      this.addFile(source, position);
+    }
+
+    this.updatePosition(str);
+    this.output += str;
+  }
+  return str;
+};
+
+/**
+ * Adds a file to the source map output if it has not already been added
+ * @param {String} `file`
+ * @param {Object} `pos`
+ */
+
+exports.addFile = function(file, position) {
+  if (typeof position.content !== 'string') return;
+  if (Object.prototype.hasOwnProperty.call(this.files, file)) return;
+  this.files[file] = position.content;
+};
+
+/**
+ * Adds a content source to the source map output if it has not already been added
+ * @param {String} `source`
+ * @param {Object} `position`
+ */
+
+exports.addContent = function(source, position) {
+  if (typeof position.content !== 'string') return;
+  if (Object.prototype.hasOwnProperty.call(this.content, source)) return;
+  this.map.setSourceContent(source, position.content);
+};
+
+/**
+ * Applies any original source maps to the output and embeds the source file
+ * contents in the source map.
+ */
+
+exports.applySourceMaps = function() {
+  Object.keys(this.files).forEach(function(file) {
+    var content = this.files[file];
+    this.map.setSourceContent(file, content);
+
+    if (this.options.inputSourcemaps === true) {
+      var originalMap = utils.sourceMapResolve.resolveSync(content, file, fs.readFileSync);
+      if (originalMap) {
+        var map = new utils.SourceMap.SourceMapConsumer(originalMap.map);
+        var relativeTo = originalMap.sourcesRelativeTo;
+        this.map.applySourceMap(map, file, utils.unixify(path.dirname(relativeTo)));
+      }
+    }
+  }, this);
+};
+
+/**
+ * Process comments, drops sourceMap comments.
+ * @param {Object} node
+ */
+
+exports.comment = function(node) {
+  if (/^# sourceMappingURL=/.test(node.comment)) {
+    return this.emit('', node.position);
+  }
+  return this._comment(node);
+};

network-visualization/node_modules/snapdragon/lib/utils.js

@@ -0,0 +1,48 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+
+exports.extend = require('extend-shallow');
+exports.SourceMap = require('source-map');
+exports.sourceMapResolve = require('source-map-resolve');
+
+/**
+ * Convert backslash in the given string to forward slashes
+ */
+
+exports.unixify = function(fp) {
+  return fp.split(/\\+/).join('/');
+};
+
+/**
+ * Return true if `val` is a non-empty string
+ *
+ * @param {String} `str`
+ * @return {Boolean}
+ */
+
+exports.isString = function(str) {
+  return str && typeof str === 'string';
+};
+
+/**
+ * Cast `val` to an array
+ * @return {Array}
+ */
+
+exports.arrayify = function(val) {
+  if (typeof val === 'string') return [val];
+  return val ? (Array.isArray(val) ? val : [val]) : [];
+};
+
+/**
+ * Get the last `n` element from the given `array`
+ * @param {Array} `array`
+ * @return {*}
+ */
+
+exports.last = function(arr, n) {
+  return arr[arr.length - (n || 1)];
+};