coffeelint-use-strict/index.js

A CoffeeLint rule that enforces usage of strict mode

// Generated by CoffeeScript 1.10.0
'use strict';
var UseStrictRule, isUseStrictValue, useStrictAtTopOf;

isUseStrictValue = function(node) {
  return (node.constructor.name === 'Value') && node.isString() && (node.base.value === '"use strict"' || node.base.value === "'use strict'");
};

useStrictAtTopOf = function(node) {
  var firstChild;
  firstChild = null;
  if (node.isEmpty()) {
    return {
      boolean: true
    };
  }
  node.eachChild(function(child) {
    firstChild = child;
    return false;
  });
  return {
    boolean: isUseStrictValue(firstChild),
    firstChild: firstChild
  };
};

UseStrictRule = (function() {
  function UseStrictRule() {}

  UseStrictRule.prototype.rule = {
    name: 'use_strict',
    level: 'error',
    message: 'Missing \'use strict\' statement',
    allowGlobal: true,
    requireGlobal: false,
    description: "<p>This rule enforces the ussage of strict mode. By setting\nrequireGlobal to true, you can also require a file to\nhave a global 'use strict' statement at the top. And, by setting\nallowGlobal to true (or false) you can allow\n(or disallow) 'use strict' statements at the top of a file</p>\n<pre><code>\n#\n# If requireGlobal is false\n#\n\n# Good\ngoodfunc = (please) ->\n    'use strict'\n    allright\n\n# Bad\nbadfunc = (idonot) ->\n    obey\n</code></pre>"
  };

  UseStrictRule.prototype.lintAST = function(node, astApi) {
    var allowGlobal, createError, firstChild, ref, requireGlobal, useStrict;
    createError = astApi.createError;
    ref = astApi.config[this.rule.name], requireGlobal = ref.requireGlobal, allowGlobal = ref.allowGlobal;
    firstChild = null;
    if (node.isEmpty()) {
      return void 0;
    }
    useStrict = useStrictAtTopOf(node);
    if (useStrict.boolean === true) {
      if (allowGlobal === false) {
        this.errors.push(createError({
          lineNumber: useStrict.firstChild.locationData.first_line + 1,
          message: '\'use strict\' at top of file'
        }));
      } else {
        allowGlobal === true;
        return void 0;
      }
    } else {
      if (requireGlobal === true) {
        this.errors.push(createError({
          lineNumber: useStrict.firstChild.locationData.first_line + 1
        }));
        return void 0;
      }
    }
    node.traverseChildren(false, (function(_this) {
      return function(child) {
        var useStr;
        useStr = null;
        if (child.constructor.name === 'Code') {
          useStr = useStrictAtTopOf(child.body);
          if (!useStr.boolean) {
            _this.errors.push(createError({
              lineNumber: useStr.firstChild.locationData.first_line + 1
            }));
          }
        }
        return true;
      };
    })(this));
    return void 0;
  };

  return UseStrictRule;

})();

module.exports = UseStrictRule;