Index: frontend/node_modules/escodegen/escodegen.js =================================================================== --- frontend/node_modules/escodegen/escodegen.js (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/escodegen/escodegen.js (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,2667 @@ +/* + Copyright (C) 2012-2014 Yusuke Suzuki + Copyright (C) 2015 Ingvar Stepanyan + Copyright (C) 2014 Ivan Nikulin + Copyright (C) 2012-2013 Michael Ficarra + Copyright (C) 2012-2013 Mathias Bynens + Copyright (C) 2013 Irakli Gozalishvili + Copyright (C) 2012 Robert Gust-Bardon + Copyright (C) 2012 John Freeman + Copyright (C) 2011-2012 Ariya Hidayat + Copyright (C) 2012 Joost-Wim Boekesteijn + Copyright (C) 2012 Kris Kowal + Copyright (C) 2012 Arpad Borsos + Copyright (C) 2020 Apple Inc. All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +/*global exports:true, require:true, global:true*/ +(function () { + 'use strict'; + + var Syntax, + Precedence, + BinaryPrecedence, + SourceNode, + estraverse, + esutils, + base, + indent, + json, + renumber, + hexadecimal, + quotes, + escapeless, + newline, + space, + parentheses, + semicolons, + safeConcatenation, + directive, + extra, + parse, + sourceMap, + sourceCode, + preserveBlankLines, + FORMAT_MINIFY, + FORMAT_DEFAULTS; + + estraverse = require('estraverse'); + esutils = require('esutils'); + + Syntax = estraverse.Syntax; + + // Generation is done by generateExpression. + function isExpression(node) { + return CodeGenerator.Expression.hasOwnProperty(node.type); + } + + // Generation is done by generateStatement. + function isStatement(node) { + return CodeGenerator.Statement.hasOwnProperty(node.type); + } + + Precedence = { + Sequence: 0, + Yield: 1, + Assignment: 1, + Conditional: 2, + ArrowFunction: 2, + Coalesce: 3, + LogicalOR: 4, + LogicalAND: 5, + BitwiseOR: 6, + BitwiseXOR: 7, + BitwiseAND: 8, + Equality: 9, + Relational: 10, + BitwiseSHIFT: 11, + Additive: 12, + Multiplicative: 13, + Exponentiation: 14, + Await: 15, + Unary: 15, + Postfix: 16, + OptionalChaining: 17, + Call: 18, + New: 19, + TaggedTemplate: 20, + Member: 21, + Primary: 22 + }; + + BinaryPrecedence = { + '??': Precedence.Coalesce, + '||': Precedence.LogicalOR, + '&&': Precedence.LogicalAND, + '|': Precedence.BitwiseOR, + '^': Precedence.BitwiseXOR, + '&': Precedence.BitwiseAND, + '==': Precedence.Equality, + '!=': Precedence.Equality, + '===': Precedence.Equality, + '!==': Precedence.Equality, + 'is': Precedence.Equality, + 'isnt': Precedence.Equality, + '<': Precedence.Relational, + '>': Precedence.Relational, + '<=': Precedence.Relational, + '>=': Precedence.Relational, + 'in': Precedence.Relational, + 'instanceof': Precedence.Relational, + '<<': Precedence.BitwiseSHIFT, + '>>': Precedence.BitwiseSHIFT, + '>>>': Precedence.BitwiseSHIFT, + '+': Precedence.Additive, + '-': Precedence.Additive, + '*': Precedence.Multiplicative, + '%': Precedence.Multiplicative, + '/': Precedence.Multiplicative, + '**': Precedence.Exponentiation + }; + + //Flags + var F_ALLOW_IN = 1, + F_ALLOW_CALL = 1 << 1, + F_ALLOW_UNPARATH_NEW = 1 << 2, + F_FUNC_BODY = 1 << 3, + F_DIRECTIVE_CTX = 1 << 4, + F_SEMICOLON_OPT = 1 << 5, + F_FOUND_COALESCE = 1 << 6; + + //Expression flag sets + //NOTE: Flag order: + // F_ALLOW_IN + // F_ALLOW_CALL + // F_ALLOW_UNPARATH_NEW + var E_FTT = F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW, + E_TTF = F_ALLOW_IN | F_ALLOW_CALL, + E_TTT = F_ALLOW_IN | F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW, + E_TFF = F_ALLOW_IN, + E_FFT = F_ALLOW_UNPARATH_NEW, + E_TFT = F_ALLOW_IN | F_ALLOW_UNPARATH_NEW; + + //Statement flag sets + //NOTE: Flag order: + // F_ALLOW_IN + // F_FUNC_BODY + // F_DIRECTIVE_CTX + // F_SEMICOLON_OPT + var S_TFFF = F_ALLOW_IN, + S_TFFT = F_ALLOW_IN | F_SEMICOLON_OPT, + S_FFFF = 0x00, + S_TFTF = F_ALLOW_IN | F_DIRECTIVE_CTX, + S_TTFF = F_ALLOW_IN | F_FUNC_BODY; + + function getDefaultOptions() { + // default options + return { + indent: null, + base: null, + parse: null, + comment: false, + format: { + indent: { + style: ' ', + base: 0, + adjustMultilineComment: false + }, + newline: '\n', + space: ' ', + json: false, + renumber: false, + hexadecimal: false, + quotes: 'single', + escapeless: false, + compact: false, + parentheses: true, + semicolons: true, + safeConcatenation: false, + preserveBlankLines: false + }, + moz: { + comprehensionExpressionStartsWithAssignment: false, + starlessGenerator: false + }, + sourceMap: null, + sourceMapRoot: null, + sourceMapWithCode: false, + directive: false, + raw: true, + verbatim: null, + sourceCode: null + }; + } + + function stringRepeat(str, num) { + var result = ''; + + for (num |= 0; num > 0; num >>>= 1, str += str) { + if (num & 1) { + result += str; + } + } + + return result; + } + + function hasLineTerminator(str) { + return (/[\r\n]/g).test(str); + } + + function endsWithLineTerminator(str) { + var len = str.length; + return len && esutils.code.isLineTerminator(str.charCodeAt(len - 1)); + } + + function merge(target, override) { + var key; + for (key in override) { + if (override.hasOwnProperty(key)) { + target[key] = override[key]; + } + } + return target; + } + + function updateDeeply(target, override) { + var key, val; + + function isHashObject(target) { + return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp); + } + + for (key in override) { + if (override.hasOwnProperty(key)) { + val = override[key]; + if (isHashObject(val)) { + if (isHashObject(target[key])) { + updateDeeply(target[key], val); + } else { + target[key] = updateDeeply({}, val); + } + } else { + target[key] = val; + } + } + } + return target; + } + + function generateNumber(value) { + var result, point, temp, exponent, pos; + + if (value !== value) { + throw new Error('Numeric literal whose value is NaN'); + } + if (value < 0 || (value === 0 && 1 / value < 0)) { + throw new Error('Numeric literal whose value is negative'); + } + + if (value === 1 / 0) { + return json ? 'null' : renumber ? '1e400' : '1e+400'; + } + + result = '' + value; + if (!renumber || result.length < 3) { + return result; + } + + point = result.indexOf('.'); + if (!json && result.charCodeAt(0) === 0x30 /* 0 */ && point === 1) { + point = 0; + result = result.slice(1); + } + temp = result; + result = result.replace('e+', 'e'); + exponent = 0; + if ((pos = temp.indexOf('e')) > 0) { + exponent = +temp.slice(pos + 1); + temp = temp.slice(0, pos); + } + if (point >= 0) { + exponent -= temp.length - point - 1; + temp = +(temp.slice(0, point) + temp.slice(point + 1)) + ''; + } + pos = 0; + while (temp.charCodeAt(temp.length + pos - 1) === 0x30 /* 0 */) { + --pos; + } + if (pos !== 0) { + exponent -= pos; + temp = temp.slice(0, pos); + } + if (exponent !== 0) { + temp += 'e' + exponent; + } + if ((temp.length < result.length || + (hexadecimal && value > 1e12 && Math.floor(value) === value && (temp = '0x' + value.toString(16)).length < result.length)) && + +temp === value) { + result = temp; + } + + return result; + } + + // Generate valid RegExp expression. + // This function is based on https://github.com/Constellation/iv Engine + + function escapeRegExpCharacter(ch, previousIsBackslash) { + // not handling '\' and handling \u2028 or \u2029 to unicode escape sequence + if ((ch & ~1) === 0x2028) { + return (previousIsBackslash ? 'u' : '\\u') + ((ch === 0x2028) ? '2028' : '2029'); + } else if (ch === 10 || ch === 13) { // \n, \r + return (previousIsBackslash ? '' : '\\') + ((ch === 10) ? 'n' : 'r'); + } + return String.fromCharCode(ch); + } + + function generateRegExp(reg) { + var match, result, flags, i, iz, ch, characterInBrack, previousIsBackslash; + + result = reg.toString(); + + if (reg.source) { + // extract flag from toString result + match = result.match(/\/([^/]*)$/); + if (!match) { + return result; + } + + flags = match[1]; + result = ''; + + characterInBrack = false; + previousIsBackslash = false; + for (i = 0, iz = reg.source.length; i < iz; ++i) { + ch = reg.source.charCodeAt(i); + + if (!previousIsBackslash) { + if (characterInBrack) { + if (ch === 93) { // ] + characterInBrack = false; + } + } else { + if (ch === 47) { // / + result += '\\'; + } else if (ch === 91) { // [ + characterInBrack = true; + } + } + result += escapeRegExpCharacter(ch, previousIsBackslash); + previousIsBackslash = ch === 92; // \ + } else { + // if new RegExp("\\\n') is provided, create /\n/ + result += escapeRegExpCharacter(ch, previousIsBackslash); + // prevent like /\\[/]/ + previousIsBackslash = false; + } + } + + return '/' + result + '/' + flags; + } + + return result; + } + + function escapeAllowedCharacter(code, next) { + var hex; + + if (code === 0x08 /* \b */) { + return '\\b'; + } + + if (code === 0x0C /* \f */) { + return '\\f'; + } + + if (code === 0x09 /* \t */) { + return '\\t'; + } + + hex = code.toString(16).toUpperCase(); + if (json || code > 0xFF) { + return '\\u' + '0000'.slice(hex.length) + hex; + } else if (code === 0x0000 && !esutils.code.isDecimalDigit(next)) { + return '\\0'; + } else if (code === 0x000B /* \v */) { // '\v' + return '\\x0B'; + } else { + return '\\x' + '00'.slice(hex.length) + hex; + } + } + + function escapeDisallowedCharacter(code) { + if (code === 0x5C /* \ */) { + return '\\\\'; + } + + if (code === 0x0A /* \n */) { + return '\\n'; + } + + if (code === 0x0D /* \r */) { + return '\\r'; + } + + if (code === 0x2028) { + return '\\u2028'; + } + + if (code === 0x2029) { + return '\\u2029'; + } + + throw new Error('Incorrectly classified character'); + } + + function escapeDirective(str) { + var i, iz, code, quote; + + quote = quotes === 'double' ? '"' : '\''; + for (i = 0, iz = str.length; i < iz; ++i) { + code = str.charCodeAt(i); + if (code === 0x27 /* ' */) { + quote = '"'; + break; + } else if (code === 0x22 /* " */) { + quote = '\''; + break; + } else if (code === 0x5C /* \ */) { + ++i; + } + } + + return quote + str + quote; + } + + function escapeString(str) { + var result = '', i, len, code, singleQuotes = 0, doubleQuotes = 0, single, quote; + + for (i = 0, len = str.length; i < len; ++i) { + code = str.charCodeAt(i); + if (code === 0x27 /* ' */) { + ++singleQuotes; + } else if (code === 0x22 /* " */) { + ++doubleQuotes; + } else if (code === 0x2F /* / */ && json) { + result += '\\'; + } else if (esutils.code.isLineTerminator(code) || code === 0x5C /* \ */) { + result += escapeDisallowedCharacter(code); + continue; + } else if (!esutils.code.isIdentifierPartES5(code) && (json && code < 0x20 /* SP */ || !json && !escapeless && (code < 0x20 /* SP */ || code > 0x7E /* ~ */))) { + result += escapeAllowedCharacter(code, str.charCodeAt(i + 1)); + continue; + } + result += String.fromCharCode(code); + } + + single = !(quotes === 'double' || (quotes === 'auto' && doubleQuotes < singleQuotes)); + quote = single ? '\'' : '"'; + + if (!(single ? singleQuotes : doubleQuotes)) { + return quote + result + quote; + } + + str = result; + result = quote; + + for (i = 0, len = str.length; i < len; ++i) { + code = str.charCodeAt(i); + if ((code === 0x27 /* ' */ && single) || (code === 0x22 /* " */ && !single)) { + result += '\\'; + } + result += String.fromCharCode(code); + } + + return result + quote; + } + + /** + * flatten an array to a string, where the array can contain + * either strings or nested arrays + */ + function flattenToString(arr) { + var i, iz, elem, result = ''; + for (i = 0, iz = arr.length; i < iz; ++i) { + elem = arr[i]; + result += Array.isArray(elem) ? flattenToString(elem) : elem; + } + return result; + } + + /** + * convert generated to a SourceNode when source maps are enabled. + */ + function toSourceNodeWhenNeeded(generated, node) { + if (!sourceMap) { + // with no source maps, generated is either an + // array or a string. if an array, flatten it. + // if a string, just return it + if (Array.isArray(generated)) { + return flattenToString(generated); + } else { + return generated; + } + } + if (node == null) { + if (generated instanceof SourceNode) { + return generated; + } else { + node = {}; + } + } + if (node.loc == null) { + return new SourceNode(null, null, sourceMap, generated, node.name || null); + } + return new SourceNode(node.loc.start.line, node.loc.start.column, (sourceMap === true ? node.loc.source || null : sourceMap), generated, node.name || null); + } + + function noEmptySpace() { + return (space) ? space : ' '; + } + + function join(left, right) { + var leftSource, + rightSource, + leftCharCode, + rightCharCode; + + leftSource = toSourceNodeWhenNeeded(left).toString(); + if (leftSource.length === 0) { + return [right]; + } + + rightSource = toSourceNodeWhenNeeded(right).toString(); + if (rightSource.length === 0) { + return [left]; + } + + leftCharCode = leftSource.charCodeAt(leftSource.length - 1); + rightCharCode = rightSource.charCodeAt(0); + + if ((leftCharCode === 0x2B /* + */ || leftCharCode === 0x2D /* - */) && leftCharCode === rightCharCode || + esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode) || + leftCharCode === 0x2F /* / */ && rightCharCode === 0x69 /* i */) { // infix word operators all start with `i` + return [left, noEmptySpace(), right]; + } else if (esutils.code.isWhiteSpace(leftCharCode) || esutils.code.isLineTerminator(leftCharCode) || + esutils.code.isWhiteSpace(rightCharCode) || esutils.code.isLineTerminator(rightCharCode)) { + return [left, right]; + } + return [left, space, right]; + } + + function addIndent(stmt) { + return [base, stmt]; + } + + function withIndent(fn) { + var previousBase; + previousBase = base; + base += indent; + fn(base); + base = previousBase; + } + + function calculateSpaces(str) { + var i; + for (i = str.length - 1; i >= 0; --i) { + if (esutils.code.isLineTerminator(str.charCodeAt(i))) { + break; + } + } + return (str.length - 1) - i; + } + + function adjustMultilineComment(value, specialBase) { + var array, i, len, line, j, spaces, previousBase, sn; + + array = value.split(/\r\n|[\r\n]/); + spaces = Number.MAX_VALUE; + + // first line doesn't have indentation + for (i = 1, len = array.length; i < len; ++i) { + line = array[i]; + j = 0; + while (j < line.length && esutils.code.isWhiteSpace(line.charCodeAt(j))) { + ++j; + } + if (spaces > j) { + spaces = j; + } + } + + if (typeof specialBase !== 'undefined') { + // pattern like + // { + // var t = 20; /* + // * this is comment + // */ + // } + previousBase = base; + if (array[1][spaces] === '*') { + specialBase += ' '; + } + base = specialBase; + } else { + if (spaces & 1) { + // /* + // * + // */ + // If spaces are odd number, above pattern is considered. + // We waste 1 space. + --spaces; + } + previousBase = base; + } + + for (i = 1, len = array.length; i < len; ++i) { + sn = toSourceNodeWhenNeeded(addIndent(array[i].slice(spaces))); + array[i] = sourceMap ? sn.join('') : sn; + } + + base = previousBase; + + return array.join('\n'); + } + + function generateComment(comment, specialBase) { + if (comment.type === 'Line') { + if (endsWithLineTerminator(comment.value)) { + return '//' + comment.value; + } else { + // Always use LineTerminator + var result = '//' + comment.value; + if (!preserveBlankLines) { + result += '\n'; + } + return result; + } + } + if (extra.format.indent.adjustMultilineComment && /[\n\r]/.test(comment.value)) { + return adjustMultilineComment('/*' + comment.value + '*/', specialBase); + } + return '/*' + comment.value + '*/'; + } + + function addComments(stmt, result) { + var i, len, comment, save, tailingToStatement, specialBase, fragment, + extRange, range, prevRange, prefix, infix, suffix, count; + + if (stmt.leadingComments && stmt.leadingComments.length > 0) { + save = result; + + if (preserveBlankLines) { + comment = stmt.leadingComments[0]; + result = []; + + extRange = comment.extendedRange; + range = comment.range; + + prefix = sourceCode.substring(extRange[0], range[0]); + count = (prefix.match(/\n/g) || []).length; + if (count > 0) { + result.push(stringRepeat('\n', count)); + result.push(addIndent(generateComment(comment))); + } else { + result.push(prefix); + result.push(generateComment(comment)); + } + + prevRange = range; + + for (i = 1, len = stmt.leadingComments.length; i < len; i++) { + comment = stmt.leadingComments[i]; + range = comment.range; + + infix = sourceCode.substring(prevRange[1], range[0]); + count = (infix.match(/\n/g) || []).length; + result.push(stringRepeat('\n', count)); + result.push(addIndent(generateComment(comment))); + + prevRange = range; + } + + suffix = sourceCode.substring(range[1], extRange[1]); + count = (suffix.match(/\n/g) || []).length; + result.push(stringRepeat('\n', count)); + } else { + comment = stmt.leadingComments[0]; + result = []; + if (safeConcatenation && stmt.type === Syntax.Program && stmt.body.length === 0) { + result.push('\n'); + } + result.push(generateComment(comment)); + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push('\n'); + } + + for (i = 1, len = stmt.leadingComments.length; i < len; ++i) { + comment = stmt.leadingComments[i]; + fragment = [generateComment(comment)]; + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) { + fragment.push('\n'); + } + result.push(addIndent(fragment)); + } + } + + result.push(addIndent(save)); + } + + if (stmt.trailingComments) { + + if (preserveBlankLines) { + comment = stmt.trailingComments[0]; + extRange = comment.extendedRange; + range = comment.range; + + prefix = sourceCode.substring(extRange[0], range[0]); + count = (prefix.match(/\n/g) || []).length; + + if (count > 0) { + result.push(stringRepeat('\n', count)); + result.push(addIndent(generateComment(comment))); + } else { + result.push(prefix); + result.push(generateComment(comment)); + } + } else { + tailingToStatement = !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString()); + specialBase = stringRepeat(' ', calculateSpaces(toSourceNodeWhenNeeded([base, result, indent]).toString())); + for (i = 0, len = stmt.trailingComments.length; i < len; ++i) { + comment = stmt.trailingComments[i]; + if (tailingToStatement) { + // We assume target like following script + // + // var t = 20; /** + // * This is comment of t + // */ + if (i === 0) { + // first case + result = [result, indent]; + } else { + result = [result, specialBase]; + } + result.push(generateComment(comment, specialBase)); + } else { + result = [result, addIndent(generateComment(comment))]; + } + if (i !== len - 1 && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result = [result, '\n']; + } + } + } + } + + return result; + } + + function generateBlankLines(start, end, result) { + var j, newlineCount = 0; + + for (j = start; j < end; j++) { + if (sourceCode[j] === '\n') { + newlineCount++; + } + } + + for (j = 1; j < newlineCount; j++) { + result.push(newline); + } + } + + function parenthesize(text, current, should) { + if (current < should) { + return ['(', text, ')']; + } + return text; + } + + function generateVerbatimString(string) { + var i, iz, result; + result = string.split(/\r\n|\n/); + for (i = 1, iz = result.length; i < iz; i++) { + result[i] = newline + base + result[i]; + } + return result; + } + + function generateVerbatim(expr, precedence) { + var verbatim, result, prec; + verbatim = expr[extra.verbatim]; + + if (typeof verbatim === 'string') { + result = parenthesize(generateVerbatimString(verbatim), Precedence.Sequence, precedence); + } else { + // verbatim is object + result = generateVerbatimString(verbatim.content); + prec = (verbatim.precedence != null) ? verbatim.precedence : Precedence.Sequence; + result = parenthesize(result, prec, precedence); + } + + return toSourceNodeWhenNeeded(result, expr); + } + + function CodeGenerator() { + } + + // Helpers. + + CodeGenerator.prototype.maybeBlock = function(stmt, flags) { + var result, noLeadingComment, that = this; + + noLeadingComment = !extra.comment || !stmt.leadingComments; + + if (stmt.type === Syntax.BlockStatement && noLeadingComment) { + return [space, this.generateStatement(stmt, flags)]; + } + + if (stmt.type === Syntax.EmptyStatement && noLeadingComment) { + return ';'; + } + + withIndent(function () { + result = [ + newline, + addIndent(that.generateStatement(stmt, flags)) + ]; + }); + + return result; + }; + + CodeGenerator.prototype.maybeBlockSuffix = function (stmt, result) { + var ends = endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString()); + if (stmt.type === Syntax.BlockStatement && (!extra.comment || !stmt.leadingComments) && !ends) { + return [result, space]; + } + if (ends) { + return [result, base]; + } + return [result, newline, base]; + }; + + function generateIdentifier(node) { + return toSourceNodeWhenNeeded(node.name, node); + } + + function generateAsyncPrefix(node, spaceRequired) { + return node.async ? 'async' + (spaceRequired ? noEmptySpace() : space) : ''; + } + + function generateStarSuffix(node) { + var isGenerator = node.generator && !extra.moz.starlessGenerator; + return isGenerator ? '*' + space : ''; + } + + function generateMethodPrefix(prop) { + var func = prop.value, prefix = ''; + if (func.async) { + prefix += generateAsyncPrefix(func, !prop.computed); + } + if (func.generator) { + // avoid space before method name + prefix += generateStarSuffix(func) ? '*' : ''; + } + return prefix; + } + + CodeGenerator.prototype.generatePattern = function (node, precedence, flags) { + if (node.type === Syntax.Identifier) { + return generateIdentifier(node); + } + return this.generateExpression(node, precedence, flags); + }; + + CodeGenerator.prototype.generateFunctionParams = function (node) { + var i, iz, result, hasDefault; + + hasDefault = false; + + if (node.type === Syntax.ArrowFunctionExpression && + !node.rest && (!node.defaults || node.defaults.length === 0) && + node.params.length === 1 && node.params[0].type === Syntax.Identifier) { + // arg => { } case + result = [generateAsyncPrefix(node, true), generateIdentifier(node.params[0])]; + } else { + result = node.type === Syntax.ArrowFunctionExpression ? [generateAsyncPrefix(node, false)] : []; + result.push('('); + if (node.defaults) { + hasDefault = true; + } + for (i = 0, iz = node.params.length; i < iz; ++i) { + if (hasDefault && node.defaults[i]) { + // Handle default values. + result.push(this.generateAssignment(node.params[i], node.defaults[i], '=', Precedence.Assignment, E_TTT)); + } else { + result.push(this.generatePattern(node.params[i], Precedence.Assignment, E_TTT)); + } + if (i + 1 < iz) { + result.push(',' + space); + } + } + + if (node.rest) { + if (node.params.length) { + result.push(',' + space); + } + result.push('...'); + result.push(generateIdentifier(node.rest)); + } + + result.push(')'); + } + + return result; + }; + + CodeGenerator.prototype.generateFunctionBody = function (node) { + var result, expr; + + result = this.generateFunctionParams(node); + + if (node.type === Syntax.ArrowFunctionExpression) { + result.push(space); + result.push('=>'); + } + + if (node.expression) { + result.push(space); + expr = this.generateExpression(node.body, Precedence.Assignment, E_TTT); + if (expr.toString().charAt(0) === '{') { + expr = ['(', expr, ')']; + } + result.push(expr); + } else { + result.push(this.maybeBlock(node.body, S_TTFF)); + } + + return result; + }; + + CodeGenerator.prototype.generateIterationForStatement = function (operator, stmt, flags) { + var result = ['for' + (stmt.await ? noEmptySpace() + 'await' : '') + space + '('], that = this; + withIndent(function () { + if (stmt.left.type === Syntax.VariableDeclaration) { + withIndent(function () { + result.push(stmt.left.kind + noEmptySpace()); + result.push(that.generateStatement(stmt.left.declarations[0], S_FFFF)); + }); + } else { + result.push(that.generateExpression(stmt.left, Precedence.Call, E_TTT)); + } + + result = join(result, operator); + result = [join( + result, + that.generateExpression(stmt.right, Precedence.Assignment, E_TTT) + ), ')']; + }); + result.push(this.maybeBlock(stmt.body, flags)); + return result; + }; + + CodeGenerator.prototype.generatePropertyKey = function (expr, computed) { + var result = []; + + if (computed) { + result.push('['); + } + + result.push(this.generateExpression(expr, Precedence.Assignment, E_TTT)); + + if (computed) { + result.push(']'); + } + + return result; + }; + + CodeGenerator.prototype.generateAssignment = function (left, right, operator, precedence, flags) { + if (Precedence.Assignment < precedence) { + flags |= F_ALLOW_IN; + } + + return parenthesize( + [ + this.generateExpression(left, Precedence.Call, flags), + space + operator + space, + this.generateExpression(right, Precedence.Assignment, flags) + ], + Precedence.Assignment, + precedence + ); + }; + + CodeGenerator.prototype.semicolon = function (flags) { + if (!semicolons && flags & F_SEMICOLON_OPT) { + return ''; + } + return ';'; + }; + + // Statements. + + CodeGenerator.Statement = { + + BlockStatement: function (stmt, flags) { + var range, content, result = ['{', newline], that = this; + + withIndent(function () { + // handle functions without any code + if (stmt.body.length === 0 && preserveBlankLines) { + range = stmt.range; + if (range[1] - range[0] > 2) { + content = sourceCode.substring(range[0] + 1, range[1] - 1); + if (content[0] === '\n') { + result = ['{']; + } + result.push(content); + } + } + + var i, iz, fragment, bodyFlags; + bodyFlags = S_TFFF; + if (flags & F_FUNC_BODY) { + bodyFlags |= F_DIRECTIVE_CTX; + } + + for (i = 0, iz = stmt.body.length; i < iz; ++i) { + if (preserveBlankLines) { + // handle spaces before the first line + if (i === 0) { + if (stmt.body[0].leadingComments) { + range = stmt.body[0].leadingComments[0].extendedRange; + content = sourceCode.substring(range[0], range[1]); + if (content[0] === '\n') { + result = ['{']; + } + } + if (!stmt.body[0].leadingComments) { + generateBlankLines(stmt.range[0], stmt.body[0].range[0], result); + } + } + + // handle spaces between lines + if (i > 0) { + if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) { + generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result); + } + } + } + + if (i === iz - 1) { + bodyFlags |= F_SEMICOLON_OPT; + } + + if (stmt.body[i].leadingComments && preserveBlankLines) { + fragment = that.generateStatement(stmt.body[i], bodyFlags); + } else { + fragment = addIndent(that.generateStatement(stmt.body[i], bodyFlags)); + } + + result.push(fragment); + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) { + if (preserveBlankLines && i < iz - 1) { + // don't add a new line if there are leading coments + // in the next statement + if (!stmt.body[i + 1].leadingComments) { + result.push(newline); + } + } else { + result.push(newline); + } + } + + if (preserveBlankLines) { + // handle spaces after the last line + if (i === iz - 1) { + if (!stmt.body[i].trailingComments) { + generateBlankLines(stmt.body[i].range[1], stmt.range[1], result); + } + } + } + } + }); + + result.push(addIndent('}')); + return result; + }, + + BreakStatement: function (stmt, flags) { + if (stmt.label) { + return 'break ' + stmt.label.name + this.semicolon(flags); + } + return 'break' + this.semicolon(flags); + }, + + ContinueStatement: function (stmt, flags) { + if (stmt.label) { + return 'continue ' + stmt.label.name + this.semicolon(flags); + } + return 'continue' + this.semicolon(flags); + }, + + ClassBody: function (stmt, flags) { + var result = [ '{', newline], that = this; + + withIndent(function (indent) { + var i, iz; + + for (i = 0, iz = stmt.body.length; i < iz; ++i) { + result.push(indent); + result.push(that.generateExpression(stmt.body[i], Precedence.Sequence, E_TTT)); + if (i + 1 < iz) { + result.push(newline); + } + } + }); + + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push(newline); + } + result.push(base); + result.push('}'); + return result; + }, + + ClassDeclaration: function (stmt, flags) { + var result, fragment; + result = ['class']; + if (stmt.id) { + result = join(result, this.generateExpression(stmt.id, Precedence.Sequence, E_TTT)); + } + if (stmt.superClass) { + fragment = join('extends', this.generateExpression(stmt.superClass, Precedence.Unary, E_TTT)); + result = join(result, fragment); + } + result.push(space); + result.push(this.generateStatement(stmt.body, S_TFFT)); + return result; + }, + + DirectiveStatement: function (stmt, flags) { + if (extra.raw && stmt.raw) { + return stmt.raw + this.semicolon(flags); + } + return escapeDirective(stmt.directive) + this.semicolon(flags); + }, + + DoWhileStatement: function (stmt, flags) { + // Because `do 42 while (cond)` is Syntax Error. We need semicolon. + var result = join('do', this.maybeBlock(stmt.body, S_TFFF)); + result = this.maybeBlockSuffix(stmt.body, result); + return join(result, [ + 'while' + space + '(', + this.generateExpression(stmt.test, Precedence.Sequence, E_TTT), + ')' + this.semicolon(flags) + ]); + }, + + CatchClause: function (stmt, flags) { + var result, that = this; + withIndent(function () { + var guard; + + if (stmt.param) { + result = [ + 'catch' + space + '(', + that.generateExpression(stmt.param, Precedence.Sequence, E_TTT), + ')' + ]; + + if (stmt.guard) { + guard = that.generateExpression(stmt.guard, Precedence.Sequence, E_TTT); + result.splice(2, 0, ' if ', guard); + } + } else { + result = ['catch']; + } + }); + result.push(this.maybeBlock(stmt.body, S_TFFF)); + return result; + }, + + DebuggerStatement: function (stmt, flags) { + return 'debugger' + this.semicolon(flags); + }, + + EmptyStatement: function (stmt, flags) { + return ';'; + }, + + ExportDefaultDeclaration: function (stmt, flags) { + var result = [ 'export' ], bodyFlags; + + bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF; + + // export default HoistableDeclaration[Default] + // export default AssignmentExpression[In] ; + result = join(result, 'default'); + if (isStatement(stmt.declaration)) { + result = join(result, this.generateStatement(stmt.declaration, bodyFlags)); + } else { + result = join(result, this.generateExpression(stmt.declaration, Precedence.Assignment, E_TTT) + this.semicolon(flags)); + } + return result; + }, + + ExportNamedDeclaration: function (stmt, flags) { + var result = [ 'export' ], bodyFlags, that = this; + + bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF; + + // export VariableStatement + // export Declaration[Default] + if (stmt.declaration) { + return join(result, this.generateStatement(stmt.declaration, bodyFlags)); + } + + // export ExportClause[NoReference] FromClause ; + // export ExportClause ; + if (stmt.specifiers) { + if (stmt.specifiers.length === 0) { + result = join(result, '{' + space + '}'); + } else if (stmt.specifiers[0].type === Syntax.ExportBatchSpecifier) { + result = join(result, this.generateExpression(stmt.specifiers[0], Precedence.Sequence, E_TTT)); + } else { + result = join(result, '{'); + withIndent(function (indent) { + var i, iz; + result.push(newline); + for (i = 0, iz = stmt.specifiers.length; i < iz; ++i) { + result.push(indent); + result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT)); + if (i + 1 < iz) { + result.push(',' + newline); + } + } + }); + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push(newline); + } + result.push(base + '}'); + } + + if (stmt.source) { + result = join(result, [ + 'from' + space, + // ModuleSpecifier + this.generateExpression(stmt.source, Precedence.Sequence, E_TTT), + this.semicolon(flags) + ]); + } else { + result.push(this.semicolon(flags)); + } + } + return result; + }, + + ExportAllDeclaration: function (stmt, flags) { + // export * FromClause ; + return [ + 'export' + space, + '*' + space, + 'from' + space, + // ModuleSpecifier + this.generateExpression(stmt.source, Precedence.Sequence, E_TTT), + this.semicolon(flags) + ]; + }, + + ExpressionStatement: function (stmt, flags) { + var result, fragment; + + function isClassPrefixed(fragment) { + var code; + if (fragment.slice(0, 5) !== 'class') { + return false; + } + code = fragment.charCodeAt(5); + return code === 0x7B /* '{' */ || esutils.code.isWhiteSpace(code) || esutils.code.isLineTerminator(code); + } + + function isFunctionPrefixed(fragment) { + var code; + if (fragment.slice(0, 8) !== 'function') { + return false; + } + code = fragment.charCodeAt(8); + return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A /* '*' */ || esutils.code.isLineTerminator(code); + } + + function isAsyncPrefixed(fragment) { + var code, i, iz; + if (fragment.slice(0, 5) !== 'async') { + return false; + } + if (!esutils.code.isWhiteSpace(fragment.charCodeAt(5))) { + return false; + } + for (i = 6, iz = fragment.length; i < iz; ++i) { + if (!esutils.code.isWhiteSpace(fragment.charCodeAt(i))) { + break; + } + } + if (i === iz) { + return false; + } + if (fragment.slice(i, i + 8) !== 'function') { + return false; + } + code = fragment.charCodeAt(i + 8); + return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A /* '*' */ || esutils.code.isLineTerminator(code); + } + + result = [this.generateExpression(stmt.expression, Precedence.Sequence, E_TTT)]; + // 12.4 '{', 'function', 'class' is not allowed in this position. + // wrap expression with parentheses + fragment = toSourceNodeWhenNeeded(result).toString(); + if (fragment.charCodeAt(0) === 0x7B /* '{' */ || // ObjectExpression + isClassPrefixed(fragment) || + isFunctionPrefixed(fragment) || + isAsyncPrefixed(fragment) || + (directive && (flags & F_DIRECTIVE_CTX) && stmt.expression.type === Syntax.Literal && typeof stmt.expression.value === 'string')) { + result = ['(', result, ')' + this.semicolon(flags)]; + } else { + result.push(this.semicolon(flags)); + } + return result; + }, + + ImportDeclaration: function (stmt, flags) { + // ES6: 15.2.1 valid import declarations: + // - import ImportClause FromClause ; + // - import ModuleSpecifier ; + var result, cursor, that = this; + + // If no ImportClause is present, + // this should be `import ModuleSpecifier` so skip `from` + // ModuleSpecifier is StringLiteral. + if (stmt.specifiers.length === 0) { + // import ModuleSpecifier ; + return [ + 'import', + space, + // ModuleSpecifier + this.generateExpression(stmt.source, Precedence.Sequence, E_TTT), + this.semicolon(flags) + ]; + } + + // import ImportClause FromClause ; + result = [ + 'import' + ]; + cursor = 0; + + // ImportedBinding + if (stmt.specifiers[cursor].type === Syntax.ImportDefaultSpecifier) { + result = join(result, [ + this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT) + ]); + ++cursor; + } + + if (stmt.specifiers[cursor]) { + if (cursor !== 0) { + result.push(','); + } + + if (stmt.specifiers[cursor].type === Syntax.ImportNamespaceSpecifier) { + // NameSpaceImport + result = join(result, [ + space, + this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT) + ]); + } else { + // NamedImports + result.push(space + '{'); + + if ((stmt.specifiers.length - cursor) === 1) { + // import { ... } from "..."; + result.push(space); + result.push(this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)); + result.push(space + '}' + space); + } else { + // import { + // ..., + // ..., + // } from "..."; + withIndent(function (indent) { + var i, iz; + result.push(newline); + for (i = cursor, iz = stmt.specifiers.length; i < iz; ++i) { + result.push(indent); + result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT)); + if (i + 1 < iz) { + result.push(',' + newline); + } + } + }); + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push(newline); + } + result.push(base + '}' + space); + } + } + } + + result = join(result, [ + 'from' + space, + // ModuleSpecifier + this.generateExpression(stmt.source, Precedence.Sequence, E_TTT), + this.semicolon(flags) + ]); + return result; + }, + + VariableDeclarator: function (stmt, flags) { + var itemFlags = (flags & F_ALLOW_IN) ? E_TTT : E_FTT; + if (stmt.init) { + return [ + this.generateExpression(stmt.id, Precedence.Assignment, itemFlags), + space, + '=', + space, + this.generateExpression(stmt.init, Precedence.Assignment, itemFlags) + ]; + } + return this.generatePattern(stmt.id, Precedence.Assignment, itemFlags); + }, + + VariableDeclaration: function (stmt, flags) { + // VariableDeclarator is typed as Statement, + // but joined with comma (not LineTerminator). + // So if comment is attached to target node, we should specialize. + var result, i, iz, node, bodyFlags, that = this; + + result = [ stmt.kind ]; + + bodyFlags = (flags & F_ALLOW_IN) ? S_TFFF : S_FFFF; + + function block() { + node = stmt.declarations[0]; + if (extra.comment && node.leadingComments) { + result.push('\n'); + result.push(addIndent(that.generateStatement(node, bodyFlags))); + } else { + result.push(noEmptySpace()); + result.push(that.generateStatement(node, bodyFlags)); + } + + for (i = 1, iz = stmt.declarations.length; i < iz; ++i) { + node = stmt.declarations[i]; + if (extra.comment && node.leadingComments) { + result.push(',' + newline); + result.push(addIndent(that.generateStatement(node, bodyFlags))); + } else { + result.push(',' + space); + result.push(that.generateStatement(node, bodyFlags)); + } + } + } + + if (stmt.declarations.length > 1) { + withIndent(block); + } else { + block(); + } + + result.push(this.semicolon(flags)); + + return result; + }, + + ThrowStatement: function (stmt, flags) { + return [join( + 'throw', + this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT) + ), this.semicolon(flags)]; + }, + + TryStatement: function (stmt, flags) { + var result, i, iz, guardedHandlers; + + result = ['try', this.maybeBlock(stmt.block, S_TFFF)]; + result = this.maybeBlockSuffix(stmt.block, result); + + if (stmt.handlers) { + // old interface + for (i = 0, iz = stmt.handlers.length; i < iz; ++i) { + result = join(result, this.generateStatement(stmt.handlers[i], S_TFFF)); + if (stmt.finalizer || i + 1 !== iz) { + result = this.maybeBlockSuffix(stmt.handlers[i].body, result); + } + } + } else { + guardedHandlers = stmt.guardedHandlers || []; + + for (i = 0, iz = guardedHandlers.length; i < iz; ++i) { + result = join(result, this.generateStatement(guardedHandlers[i], S_TFFF)); + if (stmt.finalizer || i + 1 !== iz) { + result = this.maybeBlockSuffix(guardedHandlers[i].body, result); + } + } + + // new interface + if (stmt.handler) { + if (Array.isArray(stmt.handler)) { + for (i = 0, iz = stmt.handler.length; i < iz; ++i) { + result = join(result, this.generateStatement(stmt.handler[i], S_TFFF)); + if (stmt.finalizer || i + 1 !== iz) { + result = this.maybeBlockSuffix(stmt.handler[i].body, result); + } + } + } else { + result = join(result, this.generateStatement(stmt.handler, S_TFFF)); + if (stmt.finalizer) { + result = this.maybeBlockSuffix(stmt.handler.body, result); + } + } + } + } + if (stmt.finalizer) { + result = join(result, ['finally', this.maybeBlock(stmt.finalizer, S_TFFF)]); + } + return result; + }, + + SwitchStatement: function (stmt, flags) { + var result, fragment, i, iz, bodyFlags, that = this; + withIndent(function () { + result = [ + 'switch' + space + '(', + that.generateExpression(stmt.discriminant, Precedence.Sequence, E_TTT), + ')' + space + '{' + newline + ]; + }); + if (stmt.cases) { + bodyFlags = S_TFFF; + for (i = 0, iz = stmt.cases.length; i < iz; ++i) { + if (i === iz - 1) { + bodyFlags |= F_SEMICOLON_OPT; + } + fragment = addIndent(this.generateStatement(stmt.cases[i], bodyFlags)); + result.push(fragment); + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) { + result.push(newline); + } + } + } + result.push(addIndent('}')); + return result; + }, + + SwitchCase: function (stmt, flags) { + var result, fragment, i, iz, bodyFlags, that = this; + withIndent(function () { + if (stmt.test) { + result = [ + join('case', that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)), + ':' + ]; + } else { + result = ['default:']; + } + + i = 0; + iz = stmt.consequent.length; + if (iz && stmt.consequent[0].type === Syntax.BlockStatement) { + fragment = that.maybeBlock(stmt.consequent[0], S_TFFF); + result.push(fragment); + i = 1; + } + + if (i !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push(newline); + } + + bodyFlags = S_TFFF; + for (; i < iz; ++i) { + if (i === iz - 1 && flags & F_SEMICOLON_OPT) { + bodyFlags |= F_SEMICOLON_OPT; + } + fragment = addIndent(that.generateStatement(stmt.consequent[i], bodyFlags)); + result.push(fragment); + if (i + 1 !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) { + result.push(newline); + } + } + }); + return result; + }, + + IfStatement: function (stmt, flags) { + var result, bodyFlags, semicolonOptional, that = this; + withIndent(function () { + result = [ + 'if' + space + '(', + that.generateExpression(stmt.test, Precedence.Sequence, E_TTT), + ')' + ]; + }); + semicolonOptional = flags & F_SEMICOLON_OPT; + bodyFlags = S_TFFF; + if (semicolonOptional) { + bodyFlags |= F_SEMICOLON_OPT; + } + if (stmt.alternate) { + result.push(this.maybeBlock(stmt.consequent, S_TFFF)); + result = this.maybeBlockSuffix(stmt.consequent, result); + if (stmt.alternate.type === Syntax.IfStatement) { + result = join(result, ['else ', this.generateStatement(stmt.alternate, bodyFlags)]); + } else { + result = join(result, join('else', this.maybeBlock(stmt.alternate, bodyFlags))); + } + } else { + result.push(this.maybeBlock(stmt.consequent, bodyFlags)); + } + return result; + }, + + ForStatement: function (stmt, flags) { + var result, that = this; + withIndent(function () { + result = ['for' + space + '(']; + if (stmt.init) { + if (stmt.init.type === Syntax.VariableDeclaration) { + result.push(that.generateStatement(stmt.init, S_FFFF)); + } else { + // F_ALLOW_IN becomes false. + result.push(that.generateExpression(stmt.init, Precedence.Sequence, E_FTT)); + result.push(';'); + } + } else { + result.push(';'); + } + + if (stmt.test) { + result.push(space); + result.push(that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)); + result.push(';'); + } else { + result.push(';'); + } + + if (stmt.update) { + result.push(space); + result.push(that.generateExpression(stmt.update, Precedence.Sequence, E_TTT)); + result.push(')'); + } else { + result.push(')'); + } + }); + + result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)); + return result; + }, + + ForInStatement: function (stmt, flags) { + return this.generateIterationForStatement('in', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF); + }, + + ForOfStatement: function (stmt, flags) { + return this.generateIterationForStatement('of', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF); + }, + + LabeledStatement: function (stmt, flags) { + return [stmt.label.name + ':', this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)]; + }, + + Program: function (stmt, flags) { + var result, fragment, i, iz, bodyFlags; + iz = stmt.body.length; + result = [safeConcatenation && iz > 0 ? '\n' : '']; + bodyFlags = S_TFTF; + for (i = 0; i < iz; ++i) { + if (!safeConcatenation && i === iz - 1) { + bodyFlags |= F_SEMICOLON_OPT; + } + + if (preserveBlankLines) { + // handle spaces before the first line + if (i === 0) { + if (!stmt.body[0].leadingComments) { + generateBlankLines(stmt.range[0], stmt.body[i].range[0], result); + } + } + + // handle spaces between lines + if (i > 0) { + if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) { + generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result); + } + } + } + + fragment = addIndent(this.generateStatement(stmt.body[i], bodyFlags)); + result.push(fragment); + if (i + 1 < iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) { + if (preserveBlankLines) { + if (!stmt.body[i + 1].leadingComments) { + result.push(newline); + } + } else { + result.push(newline); + } + } + + if (preserveBlankLines) { + // handle spaces after the last line + if (i === iz - 1) { + if (!stmt.body[i].trailingComments) { + generateBlankLines(stmt.body[i].range[1], stmt.range[1], result); + } + } + } + } + return result; + }, + + FunctionDeclaration: function (stmt, flags) { + return [ + generateAsyncPrefix(stmt, true), + 'function', + generateStarSuffix(stmt) || noEmptySpace(), + stmt.id ? generateIdentifier(stmt.id) : '', + this.generateFunctionBody(stmt) + ]; + }, + + ReturnStatement: function (stmt, flags) { + if (stmt.argument) { + return [join( + 'return', + this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT) + ), this.semicolon(flags)]; + } + return ['return' + this.semicolon(flags)]; + }, + + WhileStatement: function (stmt, flags) { + var result, that = this; + withIndent(function () { + result = [ + 'while' + space + '(', + that.generateExpression(stmt.test, Precedence.Sequence, E_TTT), + ')' + ]; + }); + result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)); + return result; + }, + + WithStatement: function (stmt, flags) { + var result, that = this; + withIndent(function () { + result = [ + 'with' + space + '(', + that.generateExpression(stmt.object, Precedence.Sequence, E_TTT), + ')' + ]; + }); + result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)); + return result; + } + + }; + + merge(CodeGenerator.prototype, CodeGenerator.Statement); + + // Expressions. + + CodeGenerator.Expression = { + + SequenceExpression: function (expr, precedence, flags) { + var result, i, iz; + if (Precedence.Sequence < precedence) { + flags |= F_ALLOW_IN; + } + result = []; + for (i = 0, iz = expr.expressions.length; i < iz; ++i) { + result.push(this.generateExpression(expr.expressions[i], Precedence.Assignment, flags)); + if (i + 1 < iz) { + result.push(',' + space); + } + } + return parenthesize(result, Precedence.Sequence, precedence); + }, + + AssignmentExpression: function (expr, precedence, flags) { + return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags); + }, + + ArrowFunctionExpression: function (expr, precedence, flags) { + return parenthesize(this.generateFunctionBody(expr), Precedence.ArrowFunction, precedence); + }, + + ConditionalExpression: function (expr, precedence, flags) { + if (Precedence.Conditional < precedence) { + flags |= F_ALLOW_IN; + } + return parenthesize( + [ + this.generateExpression(expr.test, Precedence.Coalesce, flags), + space + '?' + space, + this.generateExpression(expr.consequent, Precedence.Assignment, flags), + space + ':' + space, + this.generateExpression(expr.alternate, Precedence.Assignment, flags) + ], + Precedence.Conditional, + precedence + ); + }, + + LogicalExpression: function (expr, precedence, flags) { + if (expr.operator === '??') { + flags |= F_FOUND_COALESCE; + } + return this.BinaryExpression(expr, precedence, flags); + }, + + BinaryExpression: function (expr, precedence, flags) { + var result, leftPrecedence, rightPrecedence, currentPrecedence, fragment, leftSource; + currentPrecedence = BinaryPrecedence[expr.operator]; + leftPrecedence = expr.operator === '**' ? Precedence.Postfix : currentPrecedence; + rightPrecedence = expr.operator === '**' ? currentPrecedence : currentPrecedence + 1; + + if (currentPrecedence < precedence) { + flags |= F_ALLOW_IN; + } + + fragment = this.generateExpression(expr.left, leftPrecedence, flags); + + leftSource = fragment.toString(); + + if (leftSource.charCodeAt(leftSource.length - 1) === 0x2F /* / */ && esutils.code.isIdentifierPartES5(expr.operator.charCodeAt(0))) { + result = [fragment, noEmptySpace(), expr.operator]; + } else { + result = join(fragment, expr.operator); + } + + fragment = this.generateExpression(expr.right, rightPrecedence, flags); + + if (expr.operator === '/' && fragment.toString().charAt(0) === '/' || + expr.operator.slice(-1) === '<' && fragment.toString().slice(0, 3) === '!--') { + // If '/' concats with '/' or `<` concats with `!--`, it is interpreted as comment start + result.push(noEmptySpace()); + result.push(fragment); + } else { + result = join(result, fragment); + } + + if (expr.operator === 'in' && !(flags & F_ALLOW_IN)) { + return ['(', result, ')']; + } + if ((expr.operator === '||' || expr.operator === '&&') && (flags & F_FOUND_COALESCE)) { + return ['(', result, ')']; + } + return parenthesize(result, currentPrecedence, precedence); + }, + + CallExpression: function (expr, precedence, flags) { + var result, i, iz; + + // F_ALLOW_UNPARATH_NEW becomes false. + result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)]; + + if (expr.optional) { + result.push('?.'); + } + + result.push('('); + for (i = 0, iz = expr['arguments'].length; i < iz; ++i) { + result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT)); + if (i + 1 < iz) { + result.push(',' + space); + } + } + result.push(')'); + + if (!(flags & F_ALLOW_CALL)) { + return ['(', result, ')']; + } + + return parenthesize(result, Precedence.Call, precedence); + }, + + ChainExpression: function (expr, precedence, flags) { + if (Precedence.OptionalChaining < precedence) { + flags |= F_ALLOW_CALL; + } + + var result = this.generateExpression(expr.expression, Precedence.OptionalChaining, flags); + + return parenthesize(result, Precedence.OptionalChaining, precedence); + }, + + NewExpression: function (expr, precedence, flags) { + var result, length, i, iz, itemFlags; + length = expr['arguments'].length; + + // F_ALLOW_CALL becomes false. + // F_ALLOW_UNPARATH_NEW may become false. + itemFlags = (flags & F_ALLOW_UNPARATH_NEW && !parentheses && length === 0) ? E_TFT : E_TFF; + + result = join( + 'new', + this.generateExpression(expr.callee, Precedence.New, itemFlags) + ); + + if (!(flags & F_ALLOW_UNPARATH_NEW) || parentheses || length > 0) { + result.push('('); + for (i = 0, iz = length; i < iz; ++i) { + result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT)); + if (i + 1 < iz) { + result.push(',' + space); + } + } + result.push(')'); + } + + return parenthesize(result, Precedence.New, precedence); + }, + + MemberExpression: function (expr, precedence, flags) { + var result, fragment; + + // F_ALLOW_UNPARATH_NEW becomes false. + result = [this.generateExpression(expr.object, Precedence.Call, (flags & F_ALLOW_CALL) ? E_TTF : E_TFF)]; + + if (expr.computed) { + if (expr.optional) { + result.push('?.'); + } + + result.push('['); + result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT)); + result.push(']'); + } else { + if (!expr.optional && expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') { + fragment = toSourceNodeWhenNeeded(result).toString(); + // When the following conditions are all true, + // 1. No floating point + // 2. Don't have exponents + // 3. The last character is a decimal digit + // 4. Not hexadecimal OR octal number literal + // we should add a floating point. + if ( + fragment.indexOf('.') < 0 && + !/[eExX]/.test(fragment) && + esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) && + !(fragment.length >= 2 && fragment.charCodeAt(0) === 48) // '0' + ) { + result.push(' '); + } + } + result.push(expr.optional ? '?.' : '.'); + result.push(generateIdentifier(expr.property)); + } + + return parenthesize(result, Precedence.Member, precedence); + }, + + MetaProperty: function (expr, precedence, flags) { + var result; + result = []; + result.push(typeof expr.meta === "string" ? expr.meta : generateIdentifier(expr.meta)); + result.push('.'); + result.push(typeof expr.property === "string" ? expr.property : generateIdentifier(expr.property)); + return parenthesize(result, Precedence.Member, precedence); + }, + + UnaryExpression: function (expr, precedence, flags) { + var result, fragment, rightCharCode, leftSource, leftCharCode; + fragment = this.generateExpression(expr.argument, Precedence.Unary, E_TTT); + + if (space === '') { + result = join(expr.operator, fragment); + } else { + result = [expr.operator]; + if (expr.operator.length > 2) { + // delete, void, typeof + // get `typeof []`, not `typeof[]` + result = join(result, fragment); + } else { + // Prevent inserting spaces between operator and argument if it is unnecessary + // like, `!cond` + leftSource = toSourceNodeWhenNeeded(result).toString(); + leftCharCode = leftSource.charCodeAt(leftSource.length - 1); + rightCharCode = fragment.toString().charCodeAt(0); + + if (((leftCharCode === 0x2B /* + */ || leftCharCode === 0x2D /* - */) && leftCharCode === rightCharCode) || + (esutils.code.isIdentifierPartES5(leftCharCode) && esutils.code.isIdentifierPartES5(rightCharCode))) { + result.push(noEmptySpace()); + result.push(fragment); + } else { + result.push(fragment); + } + } + } + return parenthesize(result, Precedence.Unary, precedence); + }, + + YieldExpression: function (expr, precedence, flags) { + var result; + if (expr.delegate) { + result = 'yield*'; + } else { + result = 'yield'; + } + if (expr.argument) { + result = join( + result, + this.generateExpression(expr.argument, Precedence.Yield, E_TTT) + ); + } + return parenthesize(result, Precedence.Yield, precedence); + }, + + AwaitExpression: function (expr, precedence, flags) { + var result = join( + expr.all ? 'await*' : 'await', + this.generateExpression(expr.argument, Precedence.Await, E_TTT) + ); + return parenthesize(result, Precedence.Await, precedence); + }, + + UpdateExpression: function (expr, precedence, flags) { + if (expr.prefix) { + return parenthesize( + [ + expr.operator, + this.generateExpression(expr.argument, Precedence.Unary, E_TTT) + ], + Precedence.Unary, + precedence + ); + } + return parenthesize( + [ + this.generateExpression(expr.argument, Precedence.Postfix, E_TTT), + expr.operator + ], + Precedence.Postfix, + precedence + ); + }, + + FunctionExpression: function (expr, precedence, flags) { + var result = [ + generateAsyncPrefix(expr, true), + 'function' + ]; + if (expr.id) { + result.push(generateStarSuffix(expr) || noEmptySpace()); + result.push(generateIdentifier(expr.id)); + } else { + result.push(generateStarSuffix(expr) || space); + } + result.push(this.generateFunctionBody(expr)); + return result; + }, + + ArrayPattern: function (expr, precedence, flags) { + return this.ArrayExpression(expr, precedence, flags, true); + }, + + ArrayExpression: function (expr, precedence, flags, isPattern) { + var result, multiline, that = this; + if (!expr.elements.length) { + return '[]'; + } + multiline = isPattern ? false : expr.elements.length > 1; + result = ['[', multiline ? newline : '']; + withIndent(function (indent) { + var i, iz; + for (i = 0, iz = expr.elements.length; i < iz; ++i) { + if (!expr.elements[i]) { + if (multiline) { + result.push(indent); + } + if (i + 1 === iz) { + result.push(','); + } + } else { + result.push(multiline ? indent : ''); + result.push(that.generateExpression(expr.elements[i], Precedence.Assignment, E_TTT)); + } + if (i + 1 < iz) { + result.push(',' + (multiline ? newline : space)); + } + } + }); + if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push(newline); + } + result.push(multiline ? base : ''); + result.push(']'); + return result; + }, + + RestElement: function(expr, precedence, flags) { + return '...' + this.generatePattern(expr.argument); + }, + + ClassExpression: function (expr, precedence, flags) { + var result, fragment; + result = ['class']; + if (expr.id) { + result = join(result, this.generateExpression(expr.id, Precedence.Sequence, E_TTT)); + } + if (expr.superClass) { + fragment = join('extends', this.generateExpression(expr.superClass, Precedence.Unary, E_TTT)); + result = join(result, fragment); + } + result.push(space); + result.push(this.generateStatement(expr.body, S_TFFT)); + return result; + }, + + MethodDefinition: function (expr, precedence, flags) { + var result, fragment; + if (expr['static']) { + result = ['static' + space]; + } else { + result = []; + } + if (expr.kind === 'get' || expr.kind === 'set') { + fragment = [ + join(expr.kind, this.generatePropertyKey(expr.key, expr.computed)), + this.generateFunctionBody(expr.value) + ]; + } else { + fragment = [ + generateMethodPrefix(expr), + this.generatePropertyKey(expr.key, expr.computed), + this.generateFunctionBody(expr.value) + ]; + } + return join(result, fragment); + }, + + Property: function (expr, precedence, flags) { + if (expr.kind === 'get' || expr.kind === 'set') { + return [ + expr.kind, noEmptySpace(), + this.generatePropertyKey(expr.key, expr.computed), + this.generateFunctionBody(expr.value) + ]; + } + + if (expr.shorthand) { + if (expr.value.type === "AssignmentPattern") { + return this.AssignmentPattern(expr.value, Precedence.Sequence, E_TTT); + } + return this.generatePropertyKey(expr.key, expr.computed); + } + + if (expr.method) { + return [ + generateMethodPrefix(expr), + this.generatePropertyKey(expr.key, expr.computed), + this.generateFunctionBody(expr.value) + ]; + } + + return [ + this.generatePropertyKey(expr.key, expr.computed), + ':' + space, + this.generateExpression(expr.value, Precedence.Assignment, E_TTT) + ]; + }, + + ObjectExpression: function (expr, precedence, flags) { + var multiline, result, fragment, that = this; + + if (!expr.properties.length) { + return '{}'; + } + multiline = expr.properties.length > 1; + + withIndent(function () { + fragment = that.generateExpression(expr.properties[0], Precedence.Sequence, E_TTT); + }); + + if (!multiline) { + // issues 4 + // Do not transform from + // dejavu.Class.declare({ + // method2: function () {} + // }); + // to + // dejavu.Class.declare({method2: function () { + // }}); + if (!hasLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) { + return [ '{', space, fragment, space, '}' ]; + } + } + + withIndent(function (indent) { + var i, iz; + result = [ '{', newline, indent, fragment ]; + + if (multiline) { + result.push(',' + newline); + for (i = 1, iz = expr.properties.length; i < iz; ++i) { + result.push(indent); + result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT)); + if (i + 1 < iz) { + result.push(',' + newline); + } + } + } + }); + + if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push(newline); + } + result.push(base); + result.push('}'); + return result; + }, + + AssignmentPattern: function(expr, precedence, flags) { + return this.generateAssignment(expr.left, expr.right, '=', precedence, flags); + }, + + ObjectPattern: function (expr, precedence, flags) { + var result, i, iz, multiline, property, that = this; + if (!expr.properties.length) { + return '{}'; + } + + multiline = false; + if (expr.properties.length === 1) { + property = expr.properties[0]; + if ( + property.type === Syntax.Property + && property.value.type !== Syntax.Identifier + ) { + multiline = true; + } + } else { + for (i = 0, iz = expr.properties.length; i < iz; ++i) { + property = expr.properties[i]; + if ( + property.type === Syntax.Property + && !property.shorthand + ) { + multiline = true; + break; + } + } + } + result = ['{', multiline ? newline : '' ]; + + withIndent(function (indent) { + var i, iz; + for (i = 0, iz = expr.properties.length; i < iz; ++i) { + result.push(multiline ? indent : ''); + result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT)); + if (i + 1 < iz) { + result.push(',' + (multiline ? newline : space)); + } + } + }); + + if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) { + result.push(newline); + } + result.push(multiline ? base : ''); + result.push('}'); + return result; + }, + + ThisExpression: function (expr, precedence, flags) { + return 'this'; + }, + + Super: function (expr, precedence, flags) { + return 'super'; + }, + + Identifier: function (expr, precedence, flags) { + return generateIdentifier(expr); + }, + + ImportDefaultSpecifier: function (expr, precedence, flags) { + return generateIdentifier(expr.id || expr.local); + }, + + ImportNamespaceSpecifier: function (expr, precedence, flags) { + var result = ['*']; + var id = expr.id || expr.local; + if (id) { + result.push(space + 'as' + noEmptySpace() + generateIdentifier(id)); + } + return result; + }, + + ImportSpecifier: function (expr, precedence, flags) { + var imported = expr.imported; + var result = [ imported.name ]; + var local = expr.local; + if (local && local.name !== imported.name) { + result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(local)); + } + return result; + }, + + ExportSpecifier: function (expr, precedence, flags) { + var local = expr.local; + var result = [ local.name ]; + var exported = expr.exported; + if (exported && exported.name !== local.name) { + result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(exported)); + } + return result; + }, + + Literal: function (expr, precedence, flags) { + var raw; + if (expr.hasOwnProperty('raw') && parse && extra.raw) { + try { + raw = parse(expr.raw).body[0].expression; + if (raw.type === Syntax.Literal) { + if (raw.value === expr.value) { + return expr.raw; + } + } + } catch (e) { + // not use raw property + } + } + + if (expr.regex) { + return '/' + expr.regex.pattern + '/' + expr.regex.flags; + } + + if (typeof expr.value === 'bigint') { + return expr.value.toString() + 'n'; + } + + // `expr.value` can be null if `expr.bigint` exists. We need to check + // `expr.bigint` first. + if (expr.bigint) { + return expr.bigint + 'n'; + } + + if (expr.value === null) { + return 'null'; + } + + if (typeof expr.value === 'string') { + return escapeString(expr.value); + } + + if (typeof expr.value === 'number') { + return generateNumber(expr.value); + } + + if (typeof expr.value === 'boolean') { + return expr.value ? 'true' : 'false'; + } + + return generateRegExp(expr.value); + }, + + GeneratorExpression: function (expr, precedence, flags) { + return this.ComprehensionExpression(expr, precedence, flags); + }, + + ComprehensionExpression: function (expr, precedence, flags) { + // GeneratorExpression should be parenthesized with (...), ComprehensionExpression with [...] + // Due to https://bugzilla.mozilla.org/show_bug.cgi?id=883468 position of expr.body can differ in Spidermonkey and ES6 + + var result, i, iz, fragment, that = this; + result = (expr.type === Syntax.GeneratorExpression) ? ['('] : ['[']; + + if (extra.moz.comprehensionExpressionStartsWithAssignment) { + fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT); + result.push(fragment); + } + + if (expr.blocks) { + withIndent(function () { + for (i = 0, iz = expr.blocks.length; i < iz; ++i) { + fragment = that.generateExpression(expr.blocks[i], Precedence.Sequence, E_TTT); + if (i > 0 || extra.moz.comprehensionExpressionStartsWithAssignment) { + result = join(result, fragment); + } else { + result.push(fragment); + } + } + }); + } + + if (expr.filter) { + result = join(result, 'if' + space); + fragment = this.generateExpression(expr.filter, Precedence.Sequence, E_TTT); + result = join(result, [ '(', fragment, ')' ]); + } + + if (!extra.moz.comprehensionExpressionStartsWithAssignment) { + fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT); + + result = join(result, fragment); + } + + result.push((expr.type === Syntax.GeneratorExpression) ? ')' : ']'); + return result; + }, + + ComprehensionBlock: function (expr, precedence, flags) { + var fragment; + if (expr.left.type === Syntax.VariableDeclaration) { + fragment = [ + expr.left.kind, noEmptySpace(), + this.generateStatement(expr.left.declarations[0], S_FFFF) + ]; + } else { + fragment = this.generateExpression(expr.left, Precedence.Call, E_TTT); + } + + fragment = join(fragment, expr.of ? 'of' : 'in'); + fragment = join(fragment, this.generateExpression(expr.right, Precedence.Sequence, E_TTT)); + + return [ 'for' + space + '(', fragment, ')' ]; + }, + + SpreadElement: function (expr, precedence, flags) { + return [ + '...', + this.generateExpression(expr.argument, Precedence.Assignment, E_TTT) + ]; + }, + + TaggedTemplateExpression: function (expr, precedence, flags) { + var itemFlags = E_TTF; + if (!(flags & F_ALLOW_CALL)) { + itemFlags = E_TFF; + } + var result = [ + this.generateExpression(expr.tag, Precedence.Call, itemFlags), + this.generateExpression(expr.quasi, Precedence.Primary, E_FFT) + ]; + return parenthesize(result, Precedence.TaggedTemplate, precedence); + }, + + TemplateElement: function (expr, precedence, flags) { + // Don't use "cooked". Since tagged template can use raw template + // representation. So if we do so, it breaks the script semantics. + return expr.value.raw; + }, + + TemplateLiteral: function (expr, precedence, flags) { + var result, i, iz; + result = [ '`' ]; + for (i = 0, iz = expr.quasis.length; i < iz; ++i) { + result.push(this.generateExpression(expr.quasis[i], Precedence.Primary, E_TTT)); + if (i + 1 < iz) { + result.push('${' + space); + result.push(this.generateExpression(expr.expressions[i], Precedence.Sequence, E_TTT)); + result.push(space + '}'); + } + } + result.push('`'); + return result; + }, + + ModuleSpecifier: function (expr, precedence, flags) { + return this.Literal(expr, precedence, flags); + }, + + ImportExpression: function(expr, precedence, flag) { + return parenthesize([ + 'import(', + this.generateExpression(expr.source, Precedence.Assignment, E_TTT), + ')' + ], Precedence.Call, precedence); + } + }; + + merge(CodeGenerator.prototype, CodeGenerator.Expression); + + CodeGenerator.prototype.generateExpression = function (expr, precedence, flags) { + var result, type; + + type = expr.type || Syntax.Property; + + if (extra.verbatim && expr.hasOwnProperty(extra.verbatim)) { + return generateVerbatim(expr, precedence); + } + + result = this[type](expr, precedence, flags); + + + if (extra.comment) { + result = addComments(expr, result); + } + return toSourceNodeWhenNeeded(result, expr); + }; + + CodeGenerator.prototype.generateStatement = function (stmt, flags) { + var result, + fragment; + + result = this[stmt.type](stmt, flags); + + // Attach comments + + if (extra.comment) { + result = addComments(stmt, result); + } + + fragment = toSourceNodeWhenNeeded(result).toString(); + if (stmt.type === Syntax.Program && !safeConcatenation && newline === '' && fragment.charAt(fragment.length - 1) === '\n') { + result = sourceMap ? toSourceNodeWhenNeeded(result).replaceRight(/\s+$/, '') : fragment.replace(/\s+$/, ''); + } + + return toSourceNodeWhenNeeded(result, stmt); + }; + + function generateInternal(node) { + var codegen; + + codegen = new CodeGenerator(); + if (isStatement(node)) { + return codegen.generateStatement(node, S_TFFF); + } + + if (isExpression(node)) { + return codegen.generateExpression(node, Precedence.Sequence, E_TTT); + } + + throw new Error('Unknown node type: ' + node.type); + } + + function generate(node, options) { + var defaultOptions = getDefaultOptions(), result, pair; + + if (options != null) { + // Obsolete options + // + // `options.indent` + // `options.base` + // + // Instead of them, we can use `option.format.indent`. + if (typeof options.indent === 'string') { + defaultOptions.format.indent.style = options.indent; + } + if (typeof options.base === 'number') { + defaultOptions.format.indent.base = options.base; + } + options = updateDeeply(defaultOptions, options); + indent = options.format.indent.style; + if (typeof options.base === 'string') { + base = options.base; + } else { + base = stringRepeat(indent, options.format.indent.base); + } + } else { + options = defaultOptions; + indent = options.format.indent.style; + base = stringRepeat(indent, options.format.indent.base); + } + json = options.format.json; + renumber = options.format.renumber; + hexadecimal = json ? false : options.format.hexadecimal; + quotes = json ? 'double' : options.format.quotes; + escapeless = options.format.escapeless; + newline = options.format.newline; + space = options.format.space; + if (options.format.compact) { + newline = space = indent = base = ''; + } + parentheses = options.format.parentheses; + semicolons = options.format.semicolons; + safeConcatenation = options.format.safeConcatenation; + directive = options.directive; + parse = json ? null : options.parse; + sourceMap = options.sourceMap; + sourceCode = options.sourceCode; + preserveBlankLines = options.format.preserveBlankLines && sourceCode !== null; + extra = options; + + if (sourceMap) { + if (!exports.browser) { + // We assume environment is node.js + // And prevent from including source-map by browserify + SourceNode = require('source-map').SourceNode; + } else { + SourceNode = global.sourceMap.SourceNode; + } + } + + result = generateInternal(node); + + if (!sourceMap) { + pair = {code: result.toString(), map: null}; + return options.sourceMapWithCode ? pair : pair.code; + } + + + pair = result.toStringWithSourceMap({ + file: options.file, + sourceRoot: options.sourceMapRoot + }); + + if (options.sourceContent) { + pair.map.setSourceContent(options.sourceMap, + options.sourceContent); + } + + if (options.sourceMapWithCode) { + return pair; + } + + return pair.map.toString(); + } + + FORMAT_MINIFY = { + indent: { + style: '', + base: 0 + }, + renumber: true, + hexadecimal: true, + quotes: 'auto', + escapeless: true, + compact: true, + parentheses: false, + semicolons: false + }; + + FORMAT_DEFAULTS = getDefaultOptions().format; + + exports.version = require('./package.json').version; + exports.generate = generate; + exports.attachComments = estraverse.attachComments; + exports.Precedence = updateDeeply({}, Precedence); + exports.browser = false; + exports.FORMAT_MINIFY = FORMAT_MINIFY; + exports.FORMAT_DEFAULTS = FORMAT_DEFAULTS; +}()); +/* vim: set sw=4 ts=4 et tw=80 : */