text: "use strict";
  /**
   * @license
   * Copyright 2013 Palantir Technologies, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  Object.defineProperty(exports, "__esModule", { value: true });
  var tslib_1 = require("tslib");
  var tsutils_1 = require("tsutils");
  var ts = require("typescript");
  var Lint = require("../index");
  var OPTION_AS_NEEDED = "as-needed";
  var OPTION_IGNORE_SAME_LINE = "ignore-same-line";
  var Rule = /** @class */ (function (_super) {
      tslib_1.__extends(Rule, _super);
      function Rule() {
          return _super !== null && _super.apply(this, arguments) || this;
      }
      Rule.FAILURE_STRING_FACTORY = function (kind) {
          return kind + " statements must be braced";
      };
      Rule.prototype.apply = function (sourceFile) {
          if (this.ruleArguments.indexOf(OPTION_AS_NEEDED) !== -1) {
              return this.applyWithFunction(sourceFile, walkAsNeeded);
          }
          return this.applyWithWalker(new CurlyWalker(sourceFile, this.ruleName, {
              ignoreSameLine: this.ruleArguments.indexOf(OPTION_IGNORE_SAME_LINE) !== -1,
          }));
      };
      /* tslint:disable:object-literal-sort-keys */
      Rule.metadata = {
          ruleName: "curly",
          description: "Enforces braces for `if`/`for`/`do`/`while` statements.",
          rationale: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n            ```ts\n            if (foo === bar)\n                foo++;\n                bar++;\n            ```\n\n            In the code above, the author almost certainly meant for both `foo++` and `bar++`\n            to be executed only if `foo === bar`. However, he forgot braces and `bar++` will be executed\n            no matter what. This rule could prevent such a mistake."], ["\n            \\`\\`\\`ts\n            if (foo === bar)\n                foo++;\n                bar++;\n            \\`\\`\\`\n\n            In the code above, the author almost certainly meant for both \\`foo++\\` and \\`bar++\\`\n            to be executed only if \\`foo === bar\\`. However, he forgot braces and \\`bar++\\` will be executed\n            no matter what. This rule could prevent such a mistake."]))),
          optionsDescription: Lint.Utils.dedent(templateObject_2 || (templateObject_2 = tslib_1.__makeTemplateObject(["\n            One of the following options may be provided:\n\n            * `\"", "\"` forbids any unnecessary curly braces.\n            * `\"", "\"` skips checking braces for control-flow statements\n            that are on one line and start on the same line as their control-flow keyword\n        "], ["\n            One of the following options may be provided:\n\n            * \\`\"", "\"\\` forbids any unnecessary curly braces.\n            * \\`\"", "\"\\` skips checking braces for control-flow statements\n            that are on one line and start on the same line as their control-flow keyword\n        "])), OPTION_AS_NEEDED, OPTION_IGNORE_SAME_LINE),
          options: {
              type: "array",
              items: {
                  type: "string",
                  enum: [
                      OPTION_AS_NEEDED,
                      OPTION_IGNORE_SAME_LINE,
                  ],
              },
          },
          optionExamples: [
              true,
              [true, OPTION_IGNORE_SAME_LINE],
              [true, OPTION_AS_NEEDED],
          ],
          type: "functionality",
          typescriptOnly: false,
          hasFix: true,
      };
      /* tslint:enable:object-literal-sort-keys */
      Rule.FAILURE_STRING_AS_NEEDED = "Block contains only one statement; remove the curly braces.";
      return Rule;
  }(Lint.Rules.AbstractRule));
  exports.Rule = Rule;
  function walkAsNeeded(ctx) {
      ts.forEachChild(ctx.sourceFile, function cb(node) {
          if (tsutils_1.isBlock(node) && isBlockUnnecessary(node)) {
              ctx.addFailureAt(node.statements.pos - 1, 1, Rule.FAILURE_STRING_AS_NEEDED);
          }
          ts.forEachChild(node, cb);
      });
  }
  function isBlockUnnecessary(node) {
      var parent = node.parent;
      if (node.statements.length !== 1) {
          return false;
      }
      var statement = node.statements[0];
      if (tsutils_1.isIterationStatement(parent)) {
          return true;
      }
      /*
      Watch out for this case:
      if (so) {
          if (also)
              foo();
      } else
          bar();
      */
      return tsutils_1.isIfStatement(parent) && !(tsutils_1.isIfStatement(statement)
          && statement.elseStatement === undefined
          && parent.thenStatement === node
          && parent.elseStatement !== undefined);
  }
  var CurlyWalker = /** @class */ (function (_super) {
      tslib_1.__extends(CurlyWalker, _super);
      function CurlyWalker() {
          return _super !== null && _super.apply(this, arguments) || this;
      }
      CurlyWalker.prototype.walk = function (sourceFile) {
          var _this = this;
          var cb = function (node) {
              if (tsutils_1.isIterationStatement(node)) {
                  _this.checkStatement(node.statement, node, 0, node.end);
              }
              else if (tsutils_1.isIfStatement(node)) {
                  _this.checkStatement(node.thenStatement, node, 0);
                  if (node.elseStatement !== undefined && node.elseStatement.kind !== ts.SyntaxKind.IfStatement) {
                      _this.checkStatement(node.elseStatement, node, 5);
                  }
              }
              return ts.forEachChild(node, cb);
          };
          return ts.forEachChild(sourceFile, cb);
      };
      CurlyWalker.prototype.checkStatement = function (statement, node, childIndex, end) {
          if (end === void 0) { end = statement.end; }
          var sameLine = tsutils_1.isSameLine(this.sourceFile, statement.pos, statement.end);
          if (statement.kind !== ts.SyntaxKind.Block &&
              !(this.options.ignoreSameLine && sameLine)) {
              var token = node.getChildAt(childIndex, this.sourceFile);
              var tokenText = ts.tokenToString(token.kind);
              this.addFailure(token.end - tokenText.length, end, Rule.FAILURE_STRING_FACTORY(tokenText), this.createMissingBraceFix(statement, node, sameLine));
          }
      };
      /** Generate the necessary replacement to add braces to a statement that needs them. */
      CurlyWalker.prototype.createMissingBraceFix = function (statement, node, sameLine) {
          if (sameLine) {
              return [
                  Lint.Replacement.appendText(statement.pos, " {"),
                  Lint.Replacement.appendText(statement.end, " }"),
              ];
          }
          else {
              var match = /\n([\t ])/.exec(node.getFullText(this.sourceFile)); // determine which character to use (tab or space)
              var indentation = match === null ?
                  "" :
                  // indentation should match start of statement
                  match[1].repeat(ts.getLineAndCharacterOfPosition(this.sourceFile, node.getStart(this.sourceFile)).character);
              var maybeCarriageReturn = this.sourceFile.text[this.sourceFile.getLineEndOfPosition(node.pos) - 1] === "\r" ? "\r" : "";
              return [
                  Lint.Replacement.appendText(statement.pos, " {"),
                  Lint.Replacement.appendText(statement.end, maybeCarriageReturn + "\n" + indentation + "}"),
              ];
          }
      };
      return CurlyWalker;
  }(Lint.AbstractWalker));
  var templateObject_1, templateObject_2;
  