Current File : //usr/lib/node_modules/bower/lib/node_modules/handlebars/dist/cjs/handlebars/compiler/helpers.js
'use strict';

exports.__esModule = true;
exports.SourceLocation = SourceLocation;
exports.id = id;
exports.stripFlags = stripFlags;
exports.stripComment = stripComment;
exports.preparePath = preparePath;
exports.prepareMustache = prepareMustache;
exports.prepareRawBlock = prepareRawBlock;
exports.prepareBlock = prepareBlock;
exports.prepareProgram = prepareProgram;
exports.preparePartialBlock = preparePartialBlock;
// istanbul ignore next

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

var _exception = require('../exception');

var _exception2 = _interopRequireDefault(_exception);

function validateClose(open, close) {
  close = close.path ? close.path.original : close;

  if (open.path.original !== close) {
    var errorNode = { loc: open.path.loc };

    throw new _exception2['default'](open.path.original + " doesn't match " + close, errorNode);
  }
}

function SourceLocation(source, locInfo) {
  this.source = source;
  this.start = {
    line: locInfo.first_line,
    column: locInfo.first_column
  };
  this.end = {
    line: locInfo.last_line,
    column: locInfo.last_column
  };
}

function id(token) {
  if (/^\[.*\]$/.test(token)) {
    return token.substring(1, token.length - 1);
  } else {
    return token;
  }
}

function stripFlags(open, close) {
  return {
    open: open.charAt(2) === '~',
    close: close.charAt(close.length - 3) === '~'
  };
}

function stripComment(comment) {
  return comment.replace(/^\{\{~?!-?-?/, '').replace(/-?-?~?\}\}$/, '');
}

function preparePath(data, parts, loc) {
  loc = this.locInfo(loc);

  var original = data ? '@' : '',
      dig = [],
      depth = 0;

  for (var i = 0, l = parts.length; i < l; i++) {
    var part = parts[i].part,

    // If we have [] syntax then we do not treat path references as operators,
    // i.e. foo.[this] resolves to approximately context.foo['this']
    isLiteral = parts[i].original !== part;
    original += (parts[i].separator || '') + part;

    if (!isLiteral && (part === '..' || part === '.' || part === 'this')) {
      if (dig.length > 0) {
        throw new _exception2['default']('Invalid path: ' + original, { loc: loc });
      } else if (part === '..') {
        depth++;
      }
    } else {
      dig.push(part);
    }
  }

  return {
    type: 'PathExpression',
    data: data,
    depth: depth,
    parts: dig,
    original: original,
    loc: loc
  };
}

function prepareMustache(path, params, hash, open, strip, locInfo) {
  // Must use charAt to support IE pre-10
  var escapeFlag = open.charAt(3) || open.charAt(2),
      escaped = escapeFlag !== '{' && escapeFlag !== '&';

  var decorator = /\*/.test(open);
  return {
    type: decorator ? 'Decorator' : 'MustacheStatement',
    path: path,
    params: params,
    hash: hash,
    escaped: escaped,
    strip: strip,
    loc: this.locInfo(locInfo)
  };
}

function prepareRawBlock(openRawBlock, contents, close, locInfo) {
  validateClose(openRawBlock, close);

  locInfo = this.locInfo(locInfo);
  var program = {
    type: 'Program',
    body: contents,
    strip: {},
    loc: locInfo
  };

  return {
    type: 'BlockStatement',
    path: openRawBlock.path,
    params: openRawBlock.params,
    hash: openRawBlock.hash,
    program: program,
    openStrip: {},
    inverseStrip: {},
    closeStrip: {},
    loc: locInfo
  };
}

function prepareBlock(openBlock, program, inverseAndProgram, close, inverted, locInfo) {
  if (close && close.path) {
    validateClose(openBlock, close);
  }

  var decorator = /\*/.test(openBlock.open);

  program.blockParams = openBlock.blockParams;

  var inverse = undefined,
      inverseStrip = undefined;

  if (inverseAndProgram) {
    if (decorator) {
      throw new _exception2['default']('Unexpected inverse block on decorator', inverseAndProgram);
    }

    if (inverseAndProgram.chain) {
      inverseAndProgram.program.body[0].closeStrip = close.strip;
    }

    inverseStrip = inverseAndProgram.strip;
    inverse = inverseAndProgram.program;
  }

  if (inverted) {
    inverted = inverse;
    inverse = program;
    program = inverted;
  }

  return {
    type: decorator ? 'DecoratorBlock' : 'BlockStatement',
    path: openBlock.path,
    params: openBlock.params,
    hash: openBlock.hash,
    program: program,
    inverse: inverse,
    openStrip: openBlock.strip,
    inverseStrip: inverseStrip,
    closeStrip: close && close.strip,
    loc: this.locInfo(locInfo)
  };
}

function prepareProgram(statements, loc) {
  if (!loc && statements.length) {
    var firstLoc = statements[0].loc,
        lastLoc = statements[statements.length - 1].loc;

    /* istanbul ignore else */
    if (firstLoc && lastLoc) {
      loc = {
        source: firstLoc.source,
        start: {
          line: firstLoc.start.line,
          column: firstLoc.start.column
        },
        end: {
          line: lastLoc.end.line,
          column: lastLoc.end.column
        }
      };
    }
  }

  return {
    type: 'Program',
    body: statements,
    strip: {},
    loc: loc
  };
}

function preparePartialBlock(open, program, close, locInfo) {
  validateClose(open, close);

  return {
    type: 'PartialBlockStatement',
    name: open.path,
    params: open.params,
    hash: open.hash,
    program: program,
    openStrip: open.strip,
    closeStrip: close && close.strip,
    loc: this.locInfo(locInfo)
  };
}
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Exception from '../exception';\n\nfunction validateClose(open, close) {\n  close = close.path ? close.path.original : close;\n\n  if (open.path.original !== close) {\n    let errorNode = {loc: open.path.loc};\n\n    throw new Exception(open.path.original + \" doesn't match \" + close, errorNode);\n  }\n}\n\nexport function SourceLocation(source, locInfo) {\n  this.source = source;\n  this.start = {\n    line: locInfo.first_line,\n    column: locInfo.first_column\n  };\n  this.end = {\n    line: locInfo.last_line,\n    column: locInfo.last_column\n  };\n}\n\nexport function id(token) {\n  if (/^\\[.*\\]$/.test(token)) {\n    return token.substring(1, token.length - 1);\n  } else {\n    return token;\n  }\n}\n\nexport function stripFlags(open, close) {\n  return {\n    open: open.charAt(2) === '~',\n    close: close.charAt(close.length - 3) === '~'\n  };\n}\n\nexport function stripComment(comment) {\n  return comment.replace(/^\\{\\{~?!-?-?/, '')\n                .replace(/-?-?~?\\}\\}$/, '');\n}\n\nexport function preparePath(data, parts, loc) {\n  loc = this.locInfo(loc);\n\n  let original = data ? '@' : '',\n      dig = [],\n      depth = 0;\n\n  for (let i = 0, l = parts.length; i < l; i++) {\n    let part = parts[i].part,\n        // If we have [] syntax then we do not treat path references as operators,\n        // i.e. foo.[this] resolves to approximately context.foo['this']\n        isLiteral = parts[i].original !== part;\n    original += (parts[i].separator || '') + part;\n\n    if (!isLiteral && (part === '..' || part === '.' || part === 'this')) {\n      if (dig.length > 0) {\n        throw new Exception('Invalid path: ' + original, {loc});\n      } else if (part === '..') {\n        depth++;\n      }\n    } else {\n      dig.push(part);\n    }\n  }\n\n  return {\n    type: 'PathExpression',\n    data,\n    depth,\n    parts: dig,\n    original,\n    loc\n  };\n}\n\nexport function prepareMustache(path, params, hash, open, strip, locInfo) {\n  // Must use charAt to support IE pre-10\n  let escapeFlag = open.charAt(3) || open.charAt(2),\n      escaped = escapeFlag !== '{' && escapeFlag !== '&';\n\n  let decorator = (/\\*/.test(open));\n  return {\n    type: decorator ? 'Decorator' : 'MustacheStatement',\n    path,\n    params,\n    hash,\n    escaped,\n    strip,\n    loc: this.locInfo(locInfo)\n  };\n}\n\nexport function prepareRawBlock(openRawBlock, contents, close, locInfo) {\n  validateClose(openRawBlock, close);\n\n  locInfo = this.locInfo(locInfo);\n  let program = {\n    type: 'Program',\n    body: contents,\n    strip: {},\n    loc: locInfo\n  };\n\n  return {\n    type: 'BlockStatement',\n    path: openRawBlock.path,\n    params: openRawBlock.params,\n    hash: openRawBlock.hash,\n    program,\n    openStrip: {},\n    inverseStrip: {},\n    closeStrip: {},\n    loc: locInfo\n  };\n}\n\nexport function prepareBlock(openBlock, program, inverseAndProgram, close, inverted, locInfo) {\n  if (close && close.path) {\n    validateClose(openBlock, close);\n  }\n\n  let decorator = (/\\*/.test(openBlock.open));\n\n  program.blockParams = openBlock.blockParams;\n\n  let inverse,\n      inverseStrip;\n\n  if (inverseAndProgram) {\n    if (decorator) {\n      throw new Exception('Unexpected inverse block on decorator', inverseAndProgram);\n    }\n\n    if (inverseAndProgram.chain) {\n      inverseAndProgram.program.body[0].closeStrip = close.strip;\n    }\n\n    inverseStrip = inverseAndProgram.strip;\n    inverse = inverseAndProgram.program;\n  }\n\n  if (inverted) {\n    inverted = inverse;\n    inverse = program;\n    program = inverted;\n  }\n\n  return {\n    type: decorator ? 'DecoratorBlock' : 'BlockStatement',\n    path: openBlock.path,\n    params: openBlock.params,\n    hash: openBlock.hash,\n    program,\n    inverse,\n    openStrip: openBlock.strip,\n    inverseStrip,\n    closeStrip: close && close.strip,\n    loc: this.locInfo(locInfo)\n  };\n}\n\nexport function prepareProgram(statements, loc) {\n  if (!loc && statements.length) {\n    const firstLoc = statements[0].loc,\n          lastLoc = statements[statements.length - 1].loc;\n\n    /* istanbul ignore else */\n    if (firstLoc && lastLoc) {\n      loc = {\n        source: firstLoc.source,\n        start: {\n          line: firstLoc.start.line,\n          column: firstLoc.start.column\n        },\n        end: {\n          line: lastLoc.end.line,\n          column: lastLoc.end.column\n        }\n      };\n    }\n  }\n\n  return {\n    type: 'Program',\n    body: statements,\n    strip: {},\n    loc: loc\n  };\n}\n\n\nexport function preparePartialBlock(open, program, close, locInfo) {\n  validateClose(open, close);\n\n  return {\n    type: 'PartialBlockStatement',\n    name: open.path,\n    params: open.params,\n    hash: open.hash,\n    program,\n    openStrip: open.strip,\n    closeStrip: close && close.strip,\n    loc: this.locInfo(locInfo)\n  };\n}\n\n"]}