Code coverage report for 6to5/types/index.js

Statements: 96.52% (111 / 115)      Branches: 91.36% (74 / 81)      Functions: 100% (22 / 22)      Lines: 98.2% (109 / 111)      Ignored: none     

All files » 6to5/types/ » index.js
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var _ = require("lodash");
 
var t = exports;
 
//
 
t.VISITOR_KEYS = require("./visitor-keys");
 
_.each(t.VISITOR_KEYS, function (keys, type) {
  t["is" + type] = function (node, opts) {
    return node && node.type === type && t.shallowEqual(node, opts);
  };
});
 
//
 
t.BUILDER_KEYS = _.defaults(require("./builder-keys"), t.VISITOR_KEYS);
 
_.each(t.BUILDER_KEYS, function (keys, type) {
  t[type[0].toLowerCase() + type.slice(1)] = function () {
    var args = arguments;
    var node = { type: type };
    _.each(keys, function (key, i) {
      node[key] = args[i];
    });
    return node;
  };
});
 
//
 
t.ALIAS_KEYS = require("./alias-keys");
 
var _aliases = {};
 
_.each(t.ALIAS_KEYS, function (aliases, type) {
  _.each(aliases, function (alias) {
    var types = _aliases[alias] = _aliases[alias] || [];
    types.push(type);
  });
});
 
_.each(_aliases, function (types, type) {
  t[type.toUpperCase() + "_TYPES"] = types;
 
  t["is" + type] = function (node, opts) {
    return node && _.contains(types, node.type) && t.shallowEqual(node, opts);
  };
});
 
//
 
t.shallowEqual = function (actual, expected) {
  var same = true;
 
  if (expected) {
    _.each(expected, function (val, key) {
      if (actual[key] !== val) {
        return same = false;
      }
    });
  }
 
  return same;
};
 
//
 
t.isReferenced = function (node, parent) {
  // we're a property key so we aren't referenced
  Iif (t.isProperty(parent) && parent.key === node) return false;
 
  var isMemberExpression = t.isMemberExpression(parent);
 
  // we're in a member expression and we're the computed property so we're referenced
  var isComputedProperty = isMemberExpression && parent.property === node && parent.computed;
 
  // we're in a member expression and we're the object so we're referenced
  var isObject = isMemberExpression && parent.object === node;
 
  // we are referenced
  if (!isMemberExpression || isComputedProperty || isObject) return true;
 
  return false;
};
 
t.toIdentifier = function (name) {
  Iif (t.isIdentifier(name)) return name.name;
 
  // replace all non-valid identifiers with dashes
  name = name.replace(/[^a-zA-Z0-9]/g, "-");
 
  // remove all dashes and numbers from start of name
  name = name.replace(/^[-0-9]+/, "");
 
  // camel case
  name = name.replace(/[-_\s]+(.)?/g, function (match, c) {
    return c ? c.toUpperCase() : "";
  });
 
  return name;
};
 
t.ensureBlock = function (node) {
  node.body = t.toBlock(node.body, node);
};
 
t.toStatement = function (node, ignore) {
  var mustHaveId = false;
  var newType;
 
  if (t.isClass(node)) {
    mustHaveId = true;
    newType = "ClassDeclaration";
  } else if (t.isFunction(node)) {
    mustHaveId = true;
    newType = "FunctionDeclaration";
  } else if (t.isStatement(node)) {
    newType = node.type;
  }
 
  if (mustHaveId && !node.id) {
    newType = false;
  }
 
  if (!newType) {
    Eif (ignore) {
      return false;
    } else {
      throw new Error("cannot turn " + node.type + " to a statement");
    }
  }
 
  node.type = newType;
 
  return node;
};
 
t.toBlock = function (node, parent) {
  if (t.isBlockStatement(node)) {
    return node;
  }
 
  Eif (!_.isArray(node)) {
    if (!t.isStatement(node)) {
      Eif (t.isFunction(parent)) {
        node = t.returnStatement(node);
      } else {
        node = t.expressionStatement(node);
      }
    }
 
    node = [node];
  }
 
  return t.blockStatement(node);
};
 
t.getIds = function (node, map) {
  var search = [node];
  var ids    = {};
 
  while (search.length) {
    var id = search.shift();
 
    if (t.isIdentifier(id)) {
      ids[id.name] = id;
    } else if (t.isArrayPattern(id)) {
      _.each(id.elements, function (elem) {
        search.push(elem);
      });
    } else if (t.isAssignmentExpression(id)) {
      search.push(id.left);
    } else if (t.isObjectPattern(id)) {
      _.each(id.properties, function (prop) {
        search.push(prop.value);
      });
    } else if (t.isVariableDeclaration(id)) {
      search = search.concat(id.declarations);
    } else if (t.isImportSpecifier(id) || t.isExportSpecifier(id) || t.isVariableDeclarator(id) || t.isFunctionDeclaration(id) || t.isClassDeclaration(id)) {
      search.push(id.id);
    } else if (t.isSpreadElement(id)) {
      search.push(id.argument);
    } else if (t.isExportDeclaration(id) || t.isImportDeclaration(id)) {
      search = search.concat(id.specifiers);
    } else if (t.isMemberExpression(id)) {
      search.push(id.object);
    }
  }
 
  if (!map) ids = _.keys(ids);
  return ids;
};
 
t.inherits = function (child, parent) {
  child.loc   = parent.loc;
  child.end   = parent.end;
  child.range = parent.range;
  child.start = parent.start;
  return child;
};
 
t.getSpecifierName = function (specifier) {
  return specifier.name || specifier.id;
};