Read python version from pyproject.toml (fix #542) (#669)

.github/workflows/e2e-tests.yml

@@ -79,3 +79,24 @@ jobs:
         run: python __tests__/verify-python.py 3.10
       - name: Run python-path sample 3.10
         run: pipx run --python '${{ steps.cp310.outputs.python-path }}' nox --version
+
+      - name: Run with setup-python ==3.8
+        uses: ./
+        with:
+          python-version: '==3.8'
+      - name: Verify ==3.8
+        run: python __tests__/verify-python.py 3.8
+
+      - name: Run with setup-python <3.11
+        uses: ./
+        with:
+          python-version: '<3.11'
+      - name: Verify <3.11
+        run: python __tests__/verify-python.py 3.10
+
+      - name: Run with setup-python >3.8
+        uses: ./
+        with:
+          python-version: '>3.8'
+      - name: Verify >3.8
+        run: python __tests__/verify-python.py 3.11

.github/workflows/test-python.yml

@@ -86,7 +86,152 @@ jobs:
         id: setup-python
         uses: ./
         with:
-          python-version-file: '.python-version'
+          python-version-file: .python-version
+
+      - name: Check python-path
+        run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+        shell: bash
+
+      - name: Validate version
+        run: |
+          $pythonVersion = (python --version)
+          if ("Python ${{ matrix.python }}" -ne "$pythonVersion"){
+            Write-Host "The current version is $pythonVersion; expected version is ${{ matrix.python }}"
+            exit 1
+          }
+          $pythonVersion
+        shell: pwsh
+
+      - name: Run simple code
+        run: python -c 'import math; print(math.factorial(5))'
+
+  setup-versions-from-file-without-parameter:
+    name: Setup ${{ matrix.python }} ${{ matrix.os }} version file without parameter
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-20.04, ubuntu-22.04]
+        python: [3.5.4, 3.6.7, 3.7.5, 3.8.15, 3.9.13]
+        exclude:
+          - os: ubuntu-22.04
+            python: 3.5.4
+          - os: ubuntu-22.04
+            python: 3.6.7
+          - os: ubuntu-22.04
+            python: 3.7.5
+          - os: windows-latest
+            python: 3.8.15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: build-version-file ${{ matrix.python }}
+        run: echo ${{ matrix.python }} > .python-version
+
+      - name: setup-python ${{ matrix.python }}
+        id: setup-python
+        uses: ./
+
+      - name: Check python-path
+        run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+        shell: bash
+
+      - name: Validate version
+        run: |
+          $pythonVersion = (python --version)
+          if ("Python ${{ matrix.python }}" -ne "$pythonVersion"){
+            Write-Host "The current version is $pythonVersion; expected version is ${{ matrix.python }}"
+            exit 1
+          }
+          $pythonVersion
+        shell: pwsh
+
+      - name: Run simple code
+        run: python -c 'import math; print(math.factorial(5))'
+
+  setup-versions-from-standard-pyproject-file:
+    name: Setup ${{ matrix.python }} ${{ matrix.os }} standard pyproject file
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-20.04, ubuntu-22.04]
+        python: [3.5.4, 3.6.7, 3.7.5, 3.8.15, 3.9.13]
+        exclude:
+          - os: ubuntu-22.04
+            python: 3.5.4
+          - os: ubuntu-22.04
+            python: 3.6.7
+          - os: ubuntu-22.04
+            python: 3.7.5
+          - os: windows-latest
+            python: 3.8.15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: build-version-file ${{ matrix.python }}
+        run: |
+          echo '[project]
+            requires-python = "${{ matrix.python }}"
+          ' > pyproject.toml
+
+      - name: setup-python ${{ matrix.python }}
+        id: setup-python
+        uses: ./
+        with:
+          python-version-file: pyproject.toml
+
+      - name: Check python-path
+        run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'
+        shell: bash
+
+      - name: Validate version
+        run: |
+          $pythonVersion = (python --version)
+          if ("Python ${{ matrix.python }}" -ne "$pythonVersion"){
+            Write-Host "The current version is $pythonVersion; expected version is ${{ matrix.python }}"
+            exit 1
+          }
+          $pythonVersion
+        shell: pwsh
+
+      - name: Run simple code
+        run: python -c 'import math; print(math.factorial(5))'
+
+  setup-versions-from-poetry-pyproject-file:
+    name: Setup ${{ matrix.python }} ${{ matrix.os }} poetry pyproject file
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-20.04, ubuntu-22.04]
+        python: [3.5.4, 3.6.7, 3.7.5, 3.8.15, 3.9.13]
+        exclude:
+          - os: ubuntu-22.04
+            python: 3.5.4
+          - os: ubuntu-22.04
+            python: 3.6.7
+          - os: ubuntu-22.04
+            python: 3.7.5
+          - os: windows-latest
+            python: 3.8.15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: build-version-file ${{ matrix.python }}
+        run: |
+          echo '[tool.poetry.dependencies]
+            python = "${{ matrix.python }}"
+          ' > pyproject.toml
+
+      - name: setup-python ${{ matrix.python }}
+        id: setup-python
+        uses: ./
+        with:
+          python-version-file: pyproject.toml
 
       - name: Check python-path
         run: ./__tests__/check-python-path.sh '${{ steps.setup-python.outputs.python-path }}'

__tests__/utils.test.ts

@@ -1,9 +1,17 @@
 import * as cache from '@actions/cache';
 import * as core from '@actions/core';
+import * as io from '@actions/io';
+
+import fs from 'fs';
+import path from 'path';
+
 import {
   validateVersion,
   validatePythonVersionFormatForPyPy,
-  isCacheFeatureAvailable
+  isCacheFeatureAvailable,
+  getVersionInputFromFile,
+  getVersionInputFromPlainFile,
+  getVersionInputFromTomlFile
 } from '../src/utils';
 
 jest.mock('@actions/cache');
@@ -73,3 +81,58 @@ describe('isCacheFeatureAvailable', () => {
     expect(isCacheFeatureAvailable()).toBe(true);
   });
 });
+
+const tempDir = path.join(
+  __dirname,
+  'runner',
+  path.join(Math.random().toString(36).substring(7)),
+  'temp'
+);
+
+describe('Version from file test', () => {
+  it.each([getVersionInputFromPlainFile, getVersionInputFromFile])(
+    'Version from plain file test',
+    async _fn => {
+      await io.mkdirP(tempDir);
+      const pythonVersionFileName = 'python-version.file';
+      const pythonVersionFilePath = path.join(tempDir, pythonVersionFileName);
+      const pythonVersionFileContent = '3.7';
+      fs.writeFileSync(pythonVersionFilePath, pythonVersionFileContent);
+      expect(_fn(pythonVersionFilePath)).toEqual([pythonVersionFileContent]);
+    }
+  );
+  it.each([getVersionInputFromTomlFile, getVersionInputFromFile])(
+    'Version from standard pyproject.toml test',
+    async _fn => {
+      await io.mkdirP(tempDir);
+      const pythonVersionFileName = 'pyproject.toml';
+      const pythonVersionFilePath = path.join(tempDir, pythonVersionFileName);
+      const pythonVersion = '>=3.7';
+      const pythonVersionFileContent = `[project]\nrequires-python = "${pythonVersion}"`;
+      fs.writeFileSync(pythonVersionFilePath, pythonVersionFileContent);
+      expect(_fn(pythonVersionFilePath)).toEqual([pythonVersion]);
+    }
+  );
+  it.each([getVersionInputFromTomlFile, getVersionInputFromFile])(
+    'Version from poetry pyproject.toml test',
+    async _fn => {
+      await io.mkdirP(tempDir);
+      const pythonVersionFileName = 'pyproject.toml';
+      const pythonVersionFilePath = path.join(tempDir, pythonVersionFileName);
+      const pythonVersion = '>=3.7';
+      const pythonVersionFileContent = `[tool.poetry.dependencies]\npython = "${pythonVersion}"`;
+      fs.writeFileSync(pythonVersionFilePath, pythonVersionFileContent);
+      expect(_fn(pythonVersionFilePath)).toEqual([pythonVersion]);
+    }
+  );
+  it.each([getVersionInputFromTomlFile, getVersionInputFromFile])(
+    'Version undefined',
+    async _fn => {
+      await io.mkdirP(tempDir);
+      const pythonVersionFileName = 'pyproject.toml';
+      const pythonVersionFilePath = path.join(tempDir, pythonVersionFileName);
+      fs.writeFileSync(pythonVersionFilePath, ``);
+      expect(_fn(pythonVersionFilePath)).toEqual([]);
+    }
+  );
+});

dist/setup/index.js

@@ -47524,6 +47524,2174 @@ var __createBinding;
 });
 
 
+/***/ }),
+
+/***/ 1374:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+const f = __nccwpck_require__(2033)
+const DateTime = global.Date
+
+class Date extends DateTime {
+  constructor (value) {
+    super(value)
+    this.isDate = true
+  }
+  toISOString () {
+    return `${this.getUTCFullYear()}-${f(2, this.getUTCMonth() + 1)}-${f(2, this.getUTCDate())}`
+  }
+}
+
+module.exports = value => {
+  const date = new Date(value)
+  /* istanbul ignore if */
+  if (isNaN(date)) {
+    throw new TypeError('Invalid Datetime')
+  } else {
+    return date
+  }
+}
+
+
+/***/ }),
+
+/***/ 5606:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+const f = __nccwpck_require__(2033)
+
+class FloatingDateTime extends Date {
+  constructor (value) {
+    super(value + 'Z')
+    this.isFloating = true
+  }
+  toISOString () {
+    const date = `${this.getUTCFullYear()}-${f(2, this.getUTCMonth() + 1)}-${f(2, this.getUTCDate())}`
+    const time = `${f(2, this.getUTCHours())}:${f(2, this.getUTCMinutes())}:${f(2, this.getUTCSeconds())}.${f(3, this.getUTCMilliseconds())}`
+    return `${date}T${time}`
+  }
+}
+
+module.exports = value => {
+  const date = new FloatingDateTime(value)
+  /* istanbul ignore if */
+  if (isNaN(date)) {
+    throw new TypeError('Invalid Datetime')
+  } else {
+    return date
+  }
+}
+
+
+/***/ }),
+
+/***/ 3173:
+/***/ ((module) => {
+
+"use strict";
+
+module.exports = value => {
+  const date = new Date(value)
+  /* istanbul ignore if */
+  if (isNaN(date)) {
+    throw new TypeError('Invalid Datetime')
+  } else {
+    return date
+  }
+}
+
+
+/***/ }),
+
+/***/ 5484:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+const f = __nccwpck_require__(2033)
+
+class Time extends Date {
+  constructor (value) {
+    super(`0000-01-01T${value}Z`)
+    this.isTime = true
+  }
+  toISOString () {
+    return `${f(2, this.getUTCHours())}:${f(2, this.getUTCMinutes())}:${f(2, this.getUTCSeconds())}.${f(3, this.getUTCMilliseconds())}`
+  }
+}
+
+module.exports = value => {
+  const date = new Time(value)
+  /* istanbul ignore if */
+  if (isNaN(date)) {
+    throw new TypeError('Invalid Datetime')
+  } else {
+    return date
+  }
+}
+
+
+/***/ }),
+
+/***/ 2033:
+/***/ ((module) => {
+
+"use strict";
+
+module.exports = (d, num) => {
+  num = String(num)
+  while (num.length < d) num = '0' + num
+  return num
+}
+
+
+/***/ }),
+
+/***/ 9137:
+/***/ ((module) => {
+
+"use strict";
+
+const ParserEND = 0x110000
+class ParserError extends Error {
+  /* istanbul ignore next */
+  constructor (msg, filename, linenumber) {
+    super('[ParserError] ' + msg, filename, linenumber)
+    this.name = 'ParserError'
+    this.code = 'ParserError'
+    if (Error.captureStackTrace) Error.captureStackTrace(this, ParserError)
+  }
+}
+class State {
+  constructor (parser) {
+    this.parser = parser
+    this.buf = ''
+    this.returned = null
+    this.result = null
+    this.resultTable = null
+    this.resultArr = null
+  }
+}
+class Parser {
+  constructor () {
+    this.pos = 0
+    this.col = 0
+    this.line = 0
+    this.obj = {}
+    this.ctx = this.obj
+    this.stack = []
+    this._buf = ''
+    this.char = null
+    this.ii = 0
+    this.state = new State(this.parseStart)
+  }
+
+  parse (str) {
+    /* istanbul ignore next */
+    if (str.length === 0 || str.length == null) return
+
+    this._buf = String(str)
+    this.ii = -1
+    this.char = -1
+    let getNext
+    while (getNext === false || this.nextChar()) {
+      getNext = this.runOne()
+    }
+    this._buf = null
+  }
+  nextChar () {
+    if (this.char === 0x0A) {
+      ++this.line
+      this.col = -1
+    }
+    ++this.ii
+    this.char = this._buf.codePointAt(this.ii)
+    ++this.pos
+    ++this.col
+    return this.haveBuffer()
+  }
+  haveBuffer () {
+    return this.ii < this._buf.length
+  }
+  runOne () {
+    return this.state.parser.call(this, this.state.returned)
+  }
+  finish () {
+    this.char = ParserEND
+    let last
+    do {
+      last = this.state.parser
+      this.runOne()
+    } while (this.state.parser !== last)
+
+    this.ctx = null
+    this.state = null
+    this._buf = null
+
+    return this.obj
+  }
+  next (fn) {
+    /* istanbul ignore next */
+    if (typeof fn !== 'function') throw new ParserError('Tried to set state to non-existent state: ' + JSON.stringify(fn))
+    this.state.parser = fn
+  }
+  goto (fn) {
+    this.next(fn)
+    return this.runOne()
+  }
+  call (fn, returnWith) {
+    if (returnWith) this.next(returnWith)
+    this.stack.push(this.state)
+    this.state = new State(fn)
+  }
+  callNow (fn, returnWith) {
+    this.call(fn, returnWith)
+    return this.runOne()
+  }
+  return (value) {
+    /* istanbul ignore next */
+    if (this.stack.length === 0) throw this.error(new ParserError('Stack underflow'))
+    if (value === undefined) value = this.state.buf
+    this.state = this.stack.pop()
+    this.state.returned = value
+  }
+  returnNow (value) {
+    this.return(value)
+    return this.runOne()
+  }
+  consume () {
+    /* istanbul ignore next */
+    if (this.char === ParserEND) throw this.error(new ParserError('Unexpected end-of-buffer'))
+    this.state.buf += this._buf[this.ii]
+  }
+  error (err) {
+    err.line = this.line
+    err.col = this.col
+    err.pos = this.pos
+    return err
+  }
+  /* istanbul ignore next */
+  parseStart () {
+    throw new ParserError('Must declare a parseStart method')
+  }
+}
+Parser.END = ParserEND
+Parser.Error = ParserError
+module.exports = Parser
+
+
+/***/ }),
+
+/***/ 8784:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+/* eslint-disable no-new-wrappers, no-eval, camelcase, operator-linebreak */
+module.exports = makeParserClass(__nccwpck_require__(9137))
+module.exports.makeParserClass = makeParserClass
+
+class TomlError extends Error {
+  constructor (msg) {
+    super(msg)
+    this.name = 'TomlError'
+    /* istanbul ignore next */
+    if (Error.captureStackTrace) Error.captureStackTrace(this, TomlError)
+    this.fromTOML = true
+    this.wrapped = null
+  }
+}
+TomlError.wrap = err => {
+  const terr = new TomlError(err.message)
+  terr.code = err.code
+  terr.wrapped = err
+  return terr
+}
+module.exports.TomlError = TomlError
+
+const createDateTime = __nccwpck_require__(3173)
+const createDateTimeFloat = __nccwpck_require__(5606)
+const createDate = __nccwpck_require__(1374)
+const createTime = __nccwpck_require__(5484)
+
+const CTRL_I = 0x09
+const CTRL_J = 0x0A
+const CTRL_M = 0x0D
+const CTRL_CHAR_BOUNDARY = 0x1F // the last non-character in the latin1 region of unicode, except DEL
+const CHAR_SP = 0x20
+const CHAR_QUOT = 0x22
+const CHAR_NUM = 0x23
+const CHAR_APOS = 0x27
+const CHAR_PLUS = 0x2B
+const CHAR_COMMA = 0x2C
+const CHAR_HYPHEN = 0x2D
+const CHAR_PERIOD = 0x2E
+const CHAR_0 = 0x30
+const CHAR_1 = 0x31
+const CHAR_7 = 0x37
+const CHAR_9 = 0x39
+const CHAR_COLON = 0x3A
+const CHAR_EQUALS = 0x3D
+const CHAR_A = 0x41
+const CHAR_E = 0x45
+const CHAR_F = 0x46
+const CHAR_T = 0x54
+const CHAR_U = 0x55
+const CHAR_Z = 0x5A
+const CHAR_LOWBAR = 0x5F
+const CHAR_a = 0x61
+const CHAR_b = 0x62
+const CHAR_e = 0x65
+const CHAR_f = 0x66
+const CHAR_i = 0x69
+const CHAR_l = 0x6C
+const CHAR_n = 0x6E
+const CHAR_o = 0x6F
+const CHAR_r = 0x72
+const CHAR_s = 0x73
+const CHAR_t = 0x74
+const CHAR_u = 0x75
+const CHAR_x = 0x78
+const CHAR_z = 0x7A
+const CHAR_LCUB = 0x7B
+const CHAR_RCUB = 0x7D
+const CHAR_LSQB = 0x5B
+const CHAR_BSOL = 0x5C
+const CHAR_RSQB = 0x5D
+const CHAR_DEL = 0x7F
+const SURROGATE_FIRST = 0xD800
+const SURROGATE_LAST = 0xDFFF
+
+const escapes = {
+  [CHAR_b]: '\u0008',
+  [CHAR_t]: '\u0009',
+  [CHAR_n]: '\u000A',
+  [CHAR_f]: '\u000C',
+  [CHAR_r]: '\u000D',
+  [CHAR_QUOT]: '\u0022',
+  [CHAR_BSOL]: '\u005C'
+}
+
+function isDigit (cp) {
+  return cp >= CHAR_0 && cp <= CHAR_9
+}
+function isHexit (cp) {
+  return (cp >= CHAR_A && cp <= CHAR_F) || (cp >= CHAR_a && cp <= CHAR_f) || (cp >= CHAR_0 && cp <= CHAR_9)
+}
+function isBit (cp) {
+  return cp === CHAR_1 || cp === CHAR_0
+}
+function isOctit (cp) {
+  return (cp >= CHAR_0 && cp <= CHAR_7)
+}
+function isAlphaNumQuoteHyphen (cp) {
+  return (cp >= CHAR_A && cp <= CHAR_Z)
+      || (cp >= CHAR_a && cp <= CHAR_z)
+      || (cp >= CHAR_0 && cp <= CHAR_9)
+      || cp === CHAR_APOS
+      || cp === CHAR_QUOT
+      || cp === CHAR_LOWBAR
+      || cp === CHAR_HYPHEN
+}
+function isAlphaNumHyphen (cp) {
+  return (cp >= CHAR_A && cp <= CHAR_Z)
+      || (cp >= CHAR_a && cp <= CHAR_z)
+      || (cp >= CHAR_0 && cp <= CHAR_9)
+      || cp === CHAR_LOWBAR
+      || cp === CHAR_HYPHEN
+}
+const _type = Symbol('type')
+const _declared = Symbol('declared')
+
+const hasOwnProperty = Object.prototype.hasOwnProperty
+const defineProperty = Object.defineProperty
+const descriptor = {configurable: true, enumerable: true, writable: true, value: undefined}
+
+function hasKey (obj, key) {
+  if (hasOwnProperty.call(obj, key)) return true
+  if (key === '__proto__') defineProperty(obj, '__proto__', descriptor)
+  return false
+}
+
+const INLINE_TABLE = Symbol('inline-table')
+function InlineTable () {
+  return Object.defineProperties({}, {
+    [_type]: {value: INLINE_TABLE}
+  })
+}
+function isInlineTable (obj) {
+  if (obj === null || typeof (obj) !== 'object') return false
+  return obj[_type] === INLINE_TABLE
+}
+
+const TABLE = Symbol('table')
+function Table () {
+  return Object.defineProperties({}, {
+    [_type]: {value: TABLE},
+    [_declared]: {value: false, writable: true}
+  })
+}
+function isTable (obj) {
+  if (obj === null || typeof (obj) !== 'object') return false
+  return obj[_type] === TABLE
+}
+
+const _contentType = Symbol('content-type')
+const INLINE_LIST = Symbol('inline-list')
+function InlineList (type) {
+  return Object.defineProperties([], {
+    [_type]: {value: INLINE_LIST},
+    [_contentType]: {value: type}
+  })
+}
+function isInlineList (obj) {
+  if (obj === null || typeof (obj) !== 'object') return false
+  return obj[_type] === INLINE_LIST
+}
+
+const LIST = Symbol('list')
+function List () {
+  return Object.defineProperties([], {
+    [_type]: {value: LIST}
+  })
+}
+function isList (obj) {
+  if (obj === null || typeof (obj) !== 'object') return false
+  return obj[_type] === LIST
+}
+
+// in an eval, to let bundlers not slurp in a util proxy
+let _custom
+try {
+  const utilInspect = eval("require('util').inspect")
+  _custom = utilInspect.custom
+} catch (_) {
+  /* eval require not available in transpiled bundle */
+}
+/* istanbul ignore next */
+const _inspect = _custom || 'inspect'
+
+class BoxedBigInt {
+  constructor (value) {
+    try {
+      this.value = global.BigInt.asIntN(64, value)
+    } catch (_) {
+      /* istanbul ignore next */
+      this.value = null
+    }
+    Object.defineProperty(this, _type, {value: INTEGER})
+  }
+  isNaN () {
+    return this.value === null
+  }
+  /* istanbul ignore next */
+  toString () {
+    return String(this.value)
+  }
+  /* istanbul ignore next */
+  [_inspect] () {
+    return `[BigInt: ${this.toString()}]}`
+  }
+  valueOf () {
+    return this.value
+  }
+}
+
+const INTEGER = Symbol('integer')
+function Integer (value) {
+  let num = Number(value)
+  // -0 is a float thing, not an int thing
+  if (Object.is(num, -0)) num = 0
+  /* istanbul ignore else */
+  if (global.BigInt && !Number.isSafeInteger(num)) {
+    return new BoxedBigInt(value)
+  } else {
+    /* istanbul ignore next */
+    return Object.defineProperties(new Number(num), {
+      isNaN: {value: function () { return isNaN(this) }},
+      [_type]: {value: INTEGER},
+      [_inspect]: {value: () => `[Integer: ${value}]`}
+    })
+  }
+}
+function isInteger (obj) {
+  if (obj === null || typeof (obj) !== 'object') return false
+  return obj[_type] === INTEGER
+}
+
+const FLOAT = Symbol('float')
+function Float (value) {
+  /* istanbul ignore next */
+  return Object.defineProperties(new Number(value), {
+    [_type]: {value: FLOAT},
+    [_inspect]: {value: () => `[Float: ${value}]`}
+  })
+}
+function isFloat (obj) {
+  if (obj === null || typeof (obj) !== 'object') return false
+  return obj[_type] === FLOAT
+}
+
+function tomlType (value) {
+  const type = typeof value
+  if (type === 'object') {
+    /* istanbul ignore if */
+    if (value === null) return 'null'
+    if (value instanceof Date) return 'datetime'
+    /* istanbul ignore else */
+    if (_type in value) {
+      switch (value[_type]) {
+        case INLINE_TABLE: return 'inline-table'
+        case INLINE_LIST: return 'inline-list'
+        /* istanbul ignore next */
+        case TABLE: return 'table'
+        /* istanbul ignore next */
+        case LIST: return 'list'
+        case FLOAT: return 'float'
+        case INTEGER: return 'integer'
+      }
+    }
+  }
+  return type
+}
+
+function makeParserClass (Parser) {
+  class TOMLParser extends Parser {
+    constructor () {
+      super()
+      this.ctx = this.obj = Table()
+    }
+
+    /* MATCH HELPER */
+    atEndOfWord () {
+      return this.char === CHAR_NUM || this.char === CTRL_I || this.char === CHAR_SP || this.atEndOfLine()
+    }
+    atEndOfLine () {
+      return this.char === Parser.END || this.char === CTRL_J || this.char === CTRL_M
+    }
+
+    parseStart () {
+      if (this.char === Parser.END) {
+        return null
+      } else if (this.char === CHAR_LSQB) {
+        return this.call(this.parseTableOrList)
+      } else if (this.char === CHAR_NUM) {
+        return this.call(this.parseComment)
+      } else if (this.char === CTRL_J || this.char === CHAR_SP || this.char === CTRL_I || this.char === CTRL_M) {
+        return null
+      } else if (isAlphaNumQuoteHyphen(this.char)) {
+        return this.callNow(this.parseAssignStatement)
+      } else {
+        throw this.error(new TomlError(`Unknown character "${this.char}"`))
+      }
+    }
+
+    // HELPER, this strips any whitespace and comments to the end of the line
+    // then RETURNS. Last state in a production.
+    parseWhitespaceToEOL () {
+      if (this.char === CHAR_SP || this.char === CTRL_I || this.char === CTRL_M) {
+        return null
+      } else if (this.char === CHAR_NUM) {
+        return this.goto(this.parseComment)
+      } else if (this.char === Parser.END || this.char === CTRL_J) {
+        return this.return()
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected only whitespace or comments till end of line'))
+      }
+    }
+
+    /* ASSIGNMENT: key = value */
+    parseAssignStatement () {
+      return this.callNow(this.parseAssign, this.recordAssignStatement)
+    }
+    recordAssignStatement (kv) {
+      let target = this.ctx
+      let finalKey = kv.key.pop()
+      for (let kw of kv.key) {
+        if (hasKey(target, kw) && (!isTable(target[kw]) || target[kw][_declared])) {
+          throw this.error(new TomlError("Can't redefine existing key"))
+        }
+        target = target[kw] = target[kw] || Table()
+      }
+      if (hasKey(target, finalKey)) {
+        throw this.error(new TomlError("Can't redefine existing key"))
+      }
+      // unbox our numbers
+      if (isInteger(kv.value) || isFloat(kv.value)) {
+        target[finalKey] = kv.value.valueOf()
+      } else {
+        target[finalKey] = kv.value
+      }
+      return this.goto(this.parseWhitespaceToEOL)
+    }
+
+    /* ASSSIGNMENT expression, key = value possibly inside an inline table */
+    parseAssign () {
+      return this.callNow(this.parseKeyword, this.recordAssignKeyword)
+    }
+    recordAssignKeyword (key) {
+      if (this.state.resultTable) {
+        this.state.resultTable.push(key)
+      } else {
+        this.state.resultTable = [key]
+      }
+      return this.goto(this.parseAssignKeywordPreDot)
+    }
+    parseAssignKeywordPreDot () {
+      if (this.char === CHAR_PERIOD) {
+        return this.next(this.parseAssignKeywordPostDot)
+      } else if (this.char !== CHAR_SP && this.char !== CTRL_I) {
+        return this.goto(this.parseAssignEqual)
+      }
+    }
+    parseAssignKeywordPostDot () {
+      if (this.char !== CHAR_SP && this.char !== CTRL_I) {
+        return this.callNow(this.parseKeyword, this.recordAssignKeyword)
+      }
+    }
+
+    parseAssignEqual () {
+      if (this.char === CHAR_EQUALS) {
+        return this.next(this.parseAssignPreValue)
+      } else {
+        throw this.error(new TomlError('Invalid character, expected "="'))
+      }
+    }
+    parseAssignPreValue () {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else {
+        return this.callNow(this.parseValue, this.recordAssignValue)
+      }
+    }
+    recordAssignValue (value) {
+      return this.returnNow({key: this.state.resultTable, value: value})
+    }
+
+    /* COMMENTS: #...eol */
+    parseComment () {
+      do {
+        if (this.char === Parser.END || this.char === CTRL_J) {
+          return this.return()
+        }
+      } while (this.nextChar())
+    }
+
+    /* TABLES AND LISTS, [foo] and [[foo]] */
+    parseTableOrList () {
+      if (this.char === CHAR_LSQB) {
+        this.next(this.parseList)
+      } else {
+        return this.goto(this.parseTable)
+      }
+    }
+
+    /* TABLE [foo.bar.baz] */
+    parseTable () {
+      this.ctx = this.obj
+      return this.goto(this.parseTableNext)
+    }
+    parseTableNext () {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else {
+        return this.callNow(this.parseKeyword, this.parseTableMore)
+      }
+    }
+    parseTableMore (keyword) {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else if (this.char === CHAR_RSQB) {
+        if (hasKey(this.ctx, keyword) && (!isTable(this.ctx[keyword]) || this.ctx[keyword][_declared])) {
+          throw this.error(new TomlError("Can't redefine existing key"))
+        } else {
+          this.ctx = this.ctx[keyword] = this.ctx[keyword] || Table()
+          this.ctx[_declared] = true
+        }
+        return this.next(this.parseWhitespaceToEOL)
+      } else if (this.char === CHAR_PERIOD) {
+        if (!hasKey(this.ctx, keyword)) {
+          this.ctx = this.ctx[keyword] = Table()
+        } else if (isTable(this.ctx[keyword])) {
+          this.ctx = this.ctx[keyword]
+        } else if (isList(this.ctx[keyword])) {
+          this.ctx = this.ctx[keyword][this.ctx[keyword].length - 1]
+        } else {
+          throw this.error(new TomlError("Can't redefine existing key"))
+        }
+        return this.next(this.parseTableNext)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected whitespace, . or ]'))
+      }
+    }
+
+    /* LIST [[a.b.c]] */
+    parseList () {
+      this.ctx = this.obj
+      return this.goto(this.parseListNext)
+    }
+    parseListNext () {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else {
+        return this.callNow(this.parseKeyword, this.parseListMore)
+      }
+    }
+    parseListMore (keyword) {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else if (this.char === CHAR_RSQB) {
+        if (!hasKey(this.ctx, keyword)) {
+          this.ctx[keyword] = List()
+        }
+        if (isInlineList(this.ctx[keyword])) {
+          throw this.error(new TomlError("Can't extend an inline array"))
+        } else if (isList(this.ctx[keyword])) {
+          const next = Table()
+          this.ctx[keyword].push(next)
+          this.ctx = next
+        } else {
+          throw this.error(new TomlError("Can't redefine an existing key"))
+        }
+        return this.next(this.parseListEnd)
+      } else if (this.char === CHAR_PERIOD) {
+        if (!hasKey(this.ctx, keyword)) {
+          this.ctx = this.ctx[keyword] = Table()
+        } else if (isInlineList(this.ctx[keyword])) {
+          throw this.error(new TomlError("Can't extend an inline array"))
+        } else if (isInlineTable(this.ctx[keyword])) {
+          throw this.error(new TomlError("Can't extend an inline table"))
+        } else if (isList(this.ctx[keyword])) {
+          this.ctx = this.ctx[keyword][this.ctx[keyword].length - 1]
+        } else if (isTable(this.ctx[keyword])) {
+          this.ctx = this.ctx[keyword]
+        } else {
+          throw this.error(new TomlError("Can't redefine an existing key"))
+        }
+        return this.next(this.parseListNext)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected whitespace, . or ]'))
+      }
+    }
+    parseListEnd (keyword) {
+      if (this.char === CHAR_RSQB) {
+        return this.next(this.parseWhitespaceToEOL)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected whitespace, . or ]'))
+      }
+    }
+
+    /* VALUE string, number, boolean, inline list, inline object */
+    parseValue () {
+      if (this.char === Parser.END) {
+        throw this.error(new TomlError('Key without value'))
+      } else if (this.char === CHAR_QUOT) {
+        return this.next(this.parseDoubleString)
+      } if (this.char === CHAR_APOS) {
+        return this.next(this.parseSingleString)
+      } else if (this.char === CHAR_HYPHEN || this.char === CHAR_PLUS) {
+        return this.goto(this.parseNumberSign)
+      } else if (this.char === CHAR_i) {
+        return this.next(this.parseInf)
+      } else if (this.char === CHAR_n) {
+        return this.next(this.parseNan)
+      } else if (isDigit(this.char)) {
+        return this.goto(this.parseNumberOrDateTime)
+      } else if (this.char === CHAR_t || this.char === CHAR_f) {
+        return this.goto(this.parseBoolean)
+      } else if (this.char === CHAR_LSQB) {
+        return this.call(this.parseInlineList, this.recordValue)
+      } else if (this.char === CHAR_LCUB) {
+        return this.call(this.parseInlineTable, this.recordValue)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expecting string, number, datetime, boolean, inline array or inline table'))
+      }
+    }
+    recordValue (value) {
+      return this.returnNow(value)
+    }
+
+    parseInf () {
+      if (this.char === CHAR_n) {
+        return this.next(this.parseInf2)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected "inf", "+inf" or "-inf"'))
+      }
+    }
+    parseInf2 () {
+      if (this.char === CHAR_f) {
+        if (this.state.buf === '-') {
+          return this.return(-Infinity)
+        } else {
+          return this.return(Infinity)
+        }
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected "inf", "+inf" or "-inf"'))
+      }
+    }
+
+    parseNan () {
+      if (this.char === CHAR_a) {
+        return this.next(this.parseNan2)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected "nan"'))
+      }
+    }
+    parseNan2 () {
+      if (this.char === CHAR_n) {
+        return this.return(NaN)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected "nan"'))
+      }
+    }
+
+    /* KEYS, barewords or basic, literal, or dotted */
+    parseKeyword () {
+      if (this.char === CHAR_QUOT) {
+        return this.next(this.parseBasicString)
+      } else if (this.char === CHAR_APOS) {
+        return this.next(this.parseLiteralString)
+      } else {
+        return this.goto(this.parseBareKey)
+      }
+    }
+
+    /* KEYS: barewords */
+    parseBareKey () {
+      do {
+        if (this.char === Parser.END) {
+          throw this.error(new TomlError('Key ended without value'))
+        } else if (isAlphaNumHyphen(this.char)) {
+          this.consume()
+        } else if (this.state.buf.length === 0) {
+          throw this.error(new TomlError('Empty bare keys are not allowed'))
+        } else {
+          return this.returnNow()
+        }
+      } while (this.nextChar())
+    }
+
+    /* STRINGS, single quoted (literal) */
+    parseSingleString () {
+      if (this.char === CHAR_APOS) {
+        return this.next(this.parseLiteralMultiStringMaybe)
+      } else {
+        return this.goto(this.parseLiteralString)
+      }
+    }
+    parseLiteralString () {
+      do {
+        if (this.char === CHAR_APOS) {
+          return this.return()
+        } else if (this.atEndOfLine()) {
+          throw this.error(new TomlError('Unterminated string'))
+        } else if (this.char === CHAR_DEL || (this.char <= CTRL_CHAR_BOUNDARY && this.char !== CTRL_I)) {
+          throw this.errorControlCharInString()
+        } else {
+          this.consume()
+        }
+      } while (this.nextChar())
+    }
+    parseLiteralMultiStringMaybe () {
+      if (this.char === CHAR_APOS) {
+        return this.next(this.parseLiteralMultiString)
+      } else {
+        return this.returnNow()
+      }
+    }
+    parseLiteralMultiString () {
+      if (this.char === CTRL_M) {
+        return null
+      } else if (this.char === CTRL_J) {
+        return this.next(this.parseLiteralMultiStringContent)
+      } else {
+        return this.goto(this.parseLiteralMultiStringContent)
+      }
+    }
+    parseLiteralMultiStringContent () {
+      do {
+        if (this.char === CHAR_APOS) {
+          return this.next(this.parseLiteralMultiEnd)
+        } else if (this.char === Parser.END) {
+          throw this.error(new TomlError('Unterminated multi-line string'))
+        } else if (this.char === CHAR_DEL || (this.char <= CTRL_CHAR_BOUNDARY && this.char !== CTRL_I && this.char !== CTRL_J && this.char !== CTRL_M)) {
+          throw this.errorControlCharInString()
+        } else {
+          this.consume()
+        }
+      } while (this.nextChar())
+    }
+    parseLiteralMultiEnd () {
+      if (this.char === CHAR_APOS) {
+        return this.next(this.parseLiteralMultiEnd2)
+      } else {
+        this.state.buf += "'"
+        return this.goto(this.parseLiteralMultiStringContent)
+      }
+    }
+    parseLiteralMultiEnd2 () {
+      if (this.char === CHAR_APOS) {
+        return this.return()
+      } else {
+        this.state.buf += "''"
+        return this.goto(this.parseLiteralMultiStringContent)
+      }
+    }
+
+    /* STRINGS double quoted */
+    parseDoubleString () {
+      if (this.char === CHAR_QUOT) {
+        return this.next(this.parseMultiStringMaybe)
+      } else {
+        return this.goto(this.parseBasicString)
+      }
+    }
+    parseBasicString () {
+      do {
+        if (this.char === CHAR_BSOL) {
+          return this.call(this.parseEscape, this.recordEscapeReplacement)
+        } else if (this.char === CHAR_QUOT) {
+          return this.return()
+        } else if (this.atEndOfLine()) {
+          throw this.error(new TomlError('Unterminated string'))
+        } else if (this.char === CHAR_DEL || (this.char <= CTRL_CHAR_BOUNDARY && this.char !== CTRL_I)) {
+          throw this.errorControlCharInString()
+        } else {
+          this.consume()
+        }
+      } while (this.nextChar())
+    }
+    recordEscapeReplacement (replacement) {
+      this.state.buf += replacement
+      return this.goto(this.parseBasicString)
+    }
+    parseMultiStringMaybe () {
+      if (this.char === CHAR_QUOT) {
+        return this.next(this.parseMultiString)
+      } else {
+        return this.returnNow()
+      }
+    }
+    parseMultiString () {
+      if (this.char === CTRL_M) {
+        return null
+      } else if (this.char === CTRL_J) {
+        return this.next(this.parseMultiStringContent)
+      } else {
+        return this.goto(this.parseMultiStringContent)
+      }
+    }
+    parseMultiStringContent () {
+      do {
+        if (this.char === CHAR_BSOL) {
+          return this.call(this.parseMultiEscape, this.recordMultiEscapeReplacement)
+        } else if (this.char === CHAR_QUOT) {
+          return this.next(this.parseMultiEnd)
+        } else if (this.char === Parser.END) {
+          throw this.error(new TomlError('Unterminated multi-line string'))
+        } else if (this.char === CHAR_DEL || (this.char <= CTRL_CHAR_BOUNDARY && this.char !== CTRL_I && this.char !== CTRL_J && this.char !== CTRL_M)) {
+          throw this.errorControlCharInString()
+        } else {
+          this.consume()
+        }
+      } while (this.nextChar())
+    }
+    errorControlCharInString () {
+      let displayCode = '\\u00'
+      if (this.char < 16) {
+        displayCode += '0'
+      }
+      displayCode += this.char.toString(16)
+
+      return this.error(new TomlError(`Control characters (codes < 0x1f and 0x7f) are not allowed in strings, use ${displayCode} instead`))
+    }
+    recordMultiEscapeReplacement (replacement) {
+      this.state.buf += replacement
+      return this.goto(this.parseMultiStringContent)
+    }
+    parseMultiEnd () {
+      if (this.char === CHAR_QUOT) {
+        return this.next(this.parseMultiEnd2)
+      } else {
+        this.state.buf += '"'
+        return this.goto(this.parseMultiStringContent)
+      }
+    }
+    parseMultiEnd2 () {
+      if (this.char === CHAR_QUOT) {
+        return this.return()
+      } else {
+        this.state.buf += '""'
+        return this.goto(this.parseMultiStringContent)
+      }
+    }
+    parseMultiEscape () {
+      if (this.char === CTRL_M || this.char === CTRL_J) {
+        return this.next(this.parseMultiTrim)
+      } else if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return this.next(this.parsePreMultiTrim)
+      } else {
+        return this.goto(this.parseEscape)
+      }
+    }
+    parsePreMultiTrim () {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else if (this.char === CTRL_M || this.char === CTRL_J) {
+        return this.next(this.parseMultiTrim)
+      } else {
+        throw this.error(new TomlError("Can't escape whitespace"))
+      }
+    }
+    parseMultiTrim () {
+      // explicitly whitespace here, END should follow the same path as chars
+      if (this.char === CTRL_J || this.char === CHAR_SP || this.char === CTRL_I || this.char === CTRL_M) {
+        return null
+      } else {
+        return this.returnNow()
+      }
+    }
+    parseEscape () {
+      if (this.char in escapes) {
+        return this.return(escapes[this.char])
+      } else if (this.char === CHAR_u) {
+        return this.call(this.parseSmallUnicode, this.parseUnicodeReturn)
+      } else if (this.char === CHAR_U) {
+        return this.call(this.parseLargeUnicode, this.parseUnicodeReturn)
+      } else {
+        throw this.error(new TomlError('Unknown escape character: ' + this.char))
+      }
+    }
+    parseUnicodeReturn (char) {
+      try {
+        const codePoint = parseInt(char, 16)
+        if (codePoint >= SURROGATE_FIRST && codePoint <= SURROGATE_LAST) {
+          throw this.error(new TomlError('Invalid unicode, character in range 0xD800 - 0xDFFF is reserved'))
+        }
+        return this.returnNow(String.fromCodePoint(codePoint))
+      } catch (err) {
+        throw this.error(TomlError.wrap(err))
+      }
+    }
+    parseSmallUnicode () {
+      if (!isHexit(this.char)) {
+        throw this.error(new TomlError('Invalid character in unicode sequence, expected hex'))
+      } else {
+        this.consume()
+        if (this.state.buf.length >= 4) return this.return()
+      }
+    }
+    parseLargeUnicode () {
+      if (!isHexit(this.char)) {
+        throw this.error(new TomlError('Invalid character in unicode sequence, expected hex'))
+      } else {
+        this.consume()
+        if (this.state.buf.length >= 8) return this.return()
+      }
+    }
+
+    /* NUMBERS */
+    parseNumberSign () {
+      this.consume()
+      return this.next(this.parseMaybeSignedInfOrNan)
+    }
+    parseMaybeSignedInfOrNan () {
+      if (this.char === CHAR_i) {
+        return this.next(this.parseInf)
+      } else if (this.char === CHAR_n) {
+        return this.next(this.parseNan)
+      } else {
+        return this.callNow(this.parseNoUnder, this.parseNumberIntegerStart)
+      }
+    }
+    parseNumberIntegerStart () {
+      if (this.char === CHAR_0) {
+        this.consume()
+        return this.next(this.parseNumberIntegerExponentOrDecimal)
+      } else {
+        return this.goto(this.parseNumberInteger)
+      }
+    }
+    parseNumberIntegerExponentOrDecimal () {
+      if (this.char === CHAR_PERIOD) {
+        this.consume()
+        return this.call(this.parseNoUnder, this.parseNumberFloat)
+      } else if (this.char === CHAR_E || this.char === CHAR_e) {
+        this.consume()
+        return this.next(this.parseNumberExponentSign)
+      } else {
+        return this.returnNow(Integer(this.state.buf))
+      }
+    }
+    parseNumberInteger () {
+      if (isDigit(this.char)) {
+        this.consume()
+      } else if (this.char === CHAR_LOWBAR) {
+        return this.call(this.parseNoUnder)
+      } else if (this.char === CHAR_E || this.char === CHAR_e) {
+        this.consume()
+        return this.next(this.parseNumberExponentSign)
+      } else if (this.char === CHAR_PERIOD) {
+        this.consume()
+        return this.call(this.parseNoUnder, this.parseNumberFloat)
+      } else {
+        const result = Integer(this.state.buf)
+        /* istanbul ignore if */
+        if (result.isNaN()) {
+          throw this.error(new TomlError('Invalid number'))
+        } else {
+          return this.returnNow(result)
+        }
+      }
+    }
+    parseNoUnder () {
+      if (this.char === CHAR_LOWBAR || this.char === CHAR_PERIOD || this.char === CHAR_E || this.char === CHAR_e) {
+        throw this.error(new TomlError('Unexpected character, expected digit'))
+      } else if (this.atEndOfWord()) {
+        throw this.error(new TomlError('Incomplete number'))
+      }
+      return this.returnNow()
+    }
+    parseNoUnderHexOctBinLiteral () {
+      if (this.char === CHAR_LOWBAR || this.char === CHAR_PERIOD) {
+        throw this.error(new TomlError('Unexpected character, expected digit'))
+      } else if (this.atEndOfWord()) {
+        throw this.error(new TomlError('Incomplete number'))
+      }
+      return this.returnNow()
+    }
+    parseNumberFloat () {
+      if (this.char === CHAR_LOWBAR) {
+        return this.call(this.parseNoUnder, this.parseNumberFloat)
+      } else if (isDigit(this.char)) {
+        this.consume()
+      } else if (this.char === CHAR_E || this.char === CHAR_e) {
+        this.consume()
+        return this.next(this.parseNumberExponentSign)
+      } else {
+        return this.returnNow(Float(this.state.buf))
+      }
+    }
+    parseNumberExponentSign () {
+      if (isDigit(this.char)) {
+        return this.goto(this.parseNumberExponent)
+      } else if (this.char === CHAR_HYPHEN || this.char === CHAR_PLUS) {
+        this.consume()
+        this.call(this.parseNoUnder, this.parseNumberExponent)
+      } else {
+        throw this.error(new TomlError('Unexpected character, expected -, + or digit'))
+      }
+    }
+    parseNumberExponent () {
+      if (isDigit(this.char)) {
+        this.consume()
+      } else if (this.char === CHAR_LOWBAR) {
+        return this.call(this.parseNoUnder)
+      } else {
+        return this.returnNow(Float(this.state.buf))
+      }
+    }
+
+    /* NUMBERS or DATETIMES  */
+    parseNumberOrDateTime () {
+      if (this.char === CHAR_0) {
+        this.consume()
+        return this.next(this.parseNumberBaseOrDateTime)
+      } else {
+        return this.goto(this.parseNumberOrDateTimeOnly)
+      }
+    }
+    parseNumberOrDateTimeOnly () {
+      // note, if two zeros are in a row then it MUST be a date
+      if (this.char === CHAR_LOWBAR) {
+        return this.call(this.parseNoUnder, this.parseNumberInteger)
+      } else if (isDigit(this.char)) {
+        this.consume()
+        if (this.state.buf.length > 4) this.next(this.parseNumberInteger)
+      } else if (this.char === CHAR_E || this.char === CHAR_e) {
+        this.consume()
+        return this.next(this.parseNumberExponentSign)
+      } else if (this.char === CHAR_PERIOD) {
+        this.consume()
+        return this.call(this.parseNoUnder, this.parseNumberFloat)
+      } else if (this.char === CHAR_HYPHEN) {
+        return this.goto(this.parseDateTime)
+      } else if (this.char === CHAR_COLON) {
+        return this.goto(this.parseOnlyTimeHour)
+      } else {
+        return this.returnNow(Integer(this.state.buf))
+      }
+    }
+    parseDateTimeOnly () {
+      if (this.state.buf.length < 4) {
+        if (isDigit(this.char)) {
+          return this.consume()
+        } else if (this.char === CHAR_COLON) {
+          return this.goto(this.parseOnlyTimeHour)
+        } else {
+          throw this.error(new TomlError('Expected digit while parsing year part of a date'))
+        }
+      } else {
+        if (this.char === CHAR_HYPHEN) {
+          return this.goto(this.parseDateTime)
+        } else {
+          throw this.error(new TomlError('Expected hyphen (-) while parsing year part of date'))
+        }
+      }
+    }
+    parseNumberBaseOrDateTime () {
+      if (this.char === CHAR_b) {
+        this.consume()
+        return this.call(this.parseNoUnderHexOctBinLiteral, this.parseIntegerBin)
+      } else if (this.char === CHAR_o) {
+        this.consume()
+        return this.call(this.parseNoUnderHexOctBinLiteral, this.parseIntegerOct)
+      } else if (this.char === CHAR_x) {
+        this.consume()
+        return this.call(this.parseNoUnderHexOctBinLiteral, this.parseIntegerHex)
+      } else if (this.char === CHAR_PERIOD) {
+        return this.goto(this.parseNumberInteger)
+      } else if (isDigit(this.char)) {
+        return this.goto(this.parseDateTimeOnly)
+      } else {
+        return this.returnNow(Integer(this.state.buf))
+      }
+    }
+    parseIntegerHex () {
+      if (isHexit(this.char)) {
+        this.consume()
+      } else if (this.char === CHAR_LOWBAR) {
+        return this.call(this.parseNoUnderHexOctBinLiteral)
+      } else {
+        const result = Integer(this.state.buf)
+        /* istanbul ignore if */
+        if (result.isNaN()) {
+          throw this.error(new TomlError('Invalid number'))
+        } else {
+          return this.returnNow(result)
+        }
+      }
+    }
+    parseIntegerOct () {
+      if (isOctit(this.char)) {
+        this.consume()
+      } else if (this.char === CHAR_LOWBAR) {
+        return this.call(this.parseNoUnderHexOctBinLiteral)
+      } else {
+        const result = Integer(this.state.buf)
+        /* istanbul ignore if */
+        if (result.isNaN()) {
+          throw this.error(new TomlError('Invalid number'))
+        } else {
+          return this.returnNow(result)
+        }
+      }
+    }
+    parseIntegerBin () {
+      if (isBit(this.char)) {
+        this.consume()
+      } else if (this.char === CHAR_LOWBAR) {
+        return this.call(this.parseNoUnderHexOctBinLiteral)
+      } else {
+        const result = Integer(this.state.buf)
+        /* istanbul ignore if */
+        if (result.isNaN()) {
+          throw this.error(new TomlError('Invalid number'))
+        } else {
+          return this.returnNow(result)
+        }
+      }
+    }
+
+    /* DATETIME */
+    parseDateTime () {
+      // we enter here having just consumed the year and about to consume the hyphen
+      if (this.state.buf.length < 4) {
+        throw this.error(new TomlError('Years less than 1000 must be zero padded to four characters'))
+      }
+      this.state.result = this.state.buf
+      this.state.buf = ''
+      return this.next(this.parseDateMonth)
+    }
+    parseDateMonth () {
+      if (this.char === CHAR_HYPHEN) {
+        if (this.state.buf.length < 2) {
+          throw this.error(new TomlError('Months less than 10 must be zero padded to two characters'))
+        }
+        this.state.result += '-' + this.state.buf
+        this.state.buf = ''
+        return this.next(this.parseDateDay)
+      } else if (isDigit(this.char)) {
+        this.consume()
+      } else {
+        throw this.error(new TomlError('Incomplete datetime'))
+      }
+    }
+    parseDateDay () {
+      if (this.char === CHAR_T || this.char === CHAR_SP) {
+        if (this.state.buf.length < 2) {
+          throw this.error(new TomlError('Days less than 10 must be zero padded to two characters'))
+        }
+        this.state.result += '-' + this.state.buf
+        this.state.buf = ''
+        return this.next(this.parseStartTimeHour)
+      } else if (this.atEndOfWord()) {
+        return this.returnNow(createDate(this.state.result + '-' + this.state.buf))
+      } else if (isDigit(this.char)) {
+        this.consume()
+      } else {
+        throw this.error(new TomlError('Incomplete datetime'))
+      }
+    }
+    parseStartTimeHour () {
+      if (this.atEndOfWord()) {
+        return this.returnNow(createDate(this.state.result))
+      } else {
+        return this.goto(this.parseTimeHour)
+      }
+    }
+    parseTimeHour () {
+      if (this.char === CHAR_COLON) {
+        if (this.state.buf.length < 2) {
+          throw this.error(new TomlError('Hours less than 10 must be zero padded to two characters'))
+        }
+        this.state.result += 'T' + this.state.buf
+        this.state.buf = ''
+        return this.next(this.parseTimeMin)
+      } else if (isDigit(this.char)) {
+        this.consume()
+      } else {
+        throw this.error(new TomlError('Incomplete datetime'))
+      }
+    }
+    parseTimeMin () {
+      if (this.state.buf.length < 2 && isDigit(this.char)) {
+        this.consume()
+      } else if (this.state.buf.length === 2 && this.char === CHAR_COLON) {
+        this.state.result += ':' + this.state.buf
+        this.state.buf = ''
+        return this.next(this.parseTimeSec)
+      } else {
+        throw this.error(new TomlError('Incomplete datetime'))
+      }
+    }
+    parseTimeSec () {
+      if (isDigit(this.char)) {
+        this.consume()
+        if (this.state.buf.length === 2) {
+          this.state.result += ':' + this.state.buf
+          this.state.buf = ''
+          return this.next(this.parseTimeZoneOrFraction)
+        }
+      } else {
+        throw this.error(new TomlError('Incomplete datetime'))
+      }
+    }
+
+    parseOnlyTimeHour () {
+      /* istanbul ignore else */
+      if (this.char === CHAR_COLON) {
+        if (this.state.buf.length < 2) {
+          throw this.error(new TomlError('Hours less than 10 must be zero padded to two characters'))
+        }
+        this.state.result = this.state.buf
+        this.state.buf = ''
+        return this.next(this.parseOnlyTimeMin)
+      } else {
+        throw this.error(new TomlError('Incomplete time'))
+      }
+    }
+    parseOnlyTimeMin () {
+      if (this.state.buf.length < 2 && isDigit(this.char)) {
+        this.consume()
+      } else if (this.state.buf.length === 2 && this.char === CHAR_COLON) {
+        this.state.result += ':' + this.state.buf
+        this.state.buf = ''
+        return this.next(this.parseOnlyTimeSec)
+      } else {
+        throw this.error(new TomlError('Incomplete time'))
+      }
+    }
+    parseOnlyTimeSec () {
+      if (isDigit(this.char)) {
+        this.consume()
+        if (this.state.buf.length === 2) {
+          return this.next(this.parseOnlyTimeFractionMaybe)
+        }
+      } else {
+        throw this.error(new TomlError('Incomplete time'))
+      }
+    }
+    parseOnlyTimeFractionMaybe () {
+      this.state.result += ':' + this.state.buf
+      if (this.char === CHAR_PERIOD) {
+        this.state.buf = ''
+        this.next(this.parseOnlyTimeFraction)
+      } else {
+        return this.return(createTime(this.state.result))
+      }
+    }
+    parseOnlyTimeFraction () {
+      if (isDigit(this.char)) {
+        this.consume()
+      } else if (this.atEndOfWord()) {
+        if (this.state.buf.length === 0) throw this.error(new TomlError('Expected digit in milliseconds'))
+        return this.returnNow(createTime(this.state.result + '.' + this.state.buf))
+      } else {
+        throw this.error(new TomlError('Unexpected character in datetime, expected period (.), minus (-), plus (+) or Z'))
+      }
+    }
+
+    parseTimeZoneOrFraction () {
+      if (this.char === CHAR_PERIOD) {
+        this.consume()
+        this.next(this.parseDateTimeFraction)
+      } else if (this.char === CHAR_HYPHEN || this.char === CHAR_PLUS) {
+        this.consume()
+        this.next(this.parseTimeZoneHour)
+      } else if (this.char === CHAR_Z) {
+        this.consume()
+        return this.return(createDateTime(this.state.result + this.state.buf))
+      } else if (this.atEndOfWord()) {
+        return this.returnNow(createDateTimeFloat(this.state.result + this.state.buf))
+      } else {
+        throw this.error(new TomlError('Unexpected character in datetime, expected period (.), minus (-), plus (+) or Z'))
+      }
+    }
+    parseDateTimeFraction () {
+      if (isDigit(this.char)) {
+        this.consume()
+      } else if (this.state.buf.length === 1) {
+        throw this.error(new TomlError('Expected digit in milliseconds'))
+      } else if (this.char === CHAR_HYPHEN || this.char === CHAR_PLUS) {
+        this.consume()
+        this.next(this.parseTimeZoneHour)
+      } else if (this.char === CHAR_Z) {
+        this.consume()
+        return this.return(createDateTime(this.state.result + this.state.buf))
+      } else if (this.atEndOfWord()) {
+        return this.returnNow(createDateTimeFloat(this.state.result + this.state.buf))
+      } else {
+        throw this.error(new TomlError('Unexpected character in datetime, expected period (.), minus (-), plus (+) or Z'))
+      }
+    }
+    parseTimeZoneHour () {
+      if (isDigit(this.char)) {
+        this.consume()
+        // FIXME: No more regexps
+        if (/\d\d$/.test(this.state.buf)) return this.next(this.parseTimeZoneSep)
+      } else {
+        throw this.error(new TomlError('Unexpected character in datetime, expected digit'))
+      }
+    }
+    parseTimeZoneSep () {
+      if (this.char === CHAR_COLON) {
+        this.consume()
+        this.next(this.parseTimeZoneMin)
+      } else {
+        throw this.error(new TomlError('Unexpected character in datetime, expected colon'))
+      }
+    }
+    parseTimeZoneMin () {
+      if (isDigit(this.char)) {
+        this.consume()
+        if (/\d\d$/.test(this.state.buf)) return this.return(createDateTime(this.state.result + this.state.buf))
+      } else {
+        throw this.error(new TomlError('Unexpected character in datetime, expected digit'))
+      }
+    }
+
+    /* BOOLEAN */
+    parseBoolean () {
+      /* istanbul ignore else */
+      if (this.char === CHAR_t) {
+        this.consume()
+        return this.next(this.parseTrue_r)
+      } else if (this.char === CHAR_f) {
+        this.consume()
+        return this.next(this.parseFalse_a)
+      }
+    }
+    parseTrue_r () {
+      if (this.char === CHAR_r) {
+        this.consume()
+        return this.next(this.parseTrue_u)
+      } else {
+        throw this.error(new TomlError('Invalid boolean, expected true or false'))
+      }
+    }
+    parseTrue_u () {
+      if (this.char === CHAR_u) {
+        this.consume()
+        return this.next(this.parseTrue_e)
+      } else {
+        throw this.error(new TomlError('Invalid boolean, expected true or false'))
+      }
+    }
+    parseTrue_e () {
+      if (this.char === CHAR_e) {
+        return this.return(true)
+      } else {
+        throw this.error(new TomlError('Invalid boolean, expected true or false'))
+      }
+    }
+
+    parseFalse_a () {
+      if (this.char === CHAR_a) {
+        this.consume()
+        return this.next(this.parseFalse_l)
+      } else {
+        throw this.error(new TomlError('Invalid boolean, expected true or false'))
+      }
+    }
+
+    parseFalse_l () {
+      if (this.char === CHAR_l) {
+        this.consume()
+        return this.next(this.parseFalse_s)
+      } else {
+        throw this.error(new TomlError('Invalid boolean, expected true or false'))
+      }
+    }
+
+    parseFalse_s () {
+      if (this.char === CHAR_s) {
+        this.consume()
+        return this.next(this.parseFalse_e)
+      } else {
+        throw this.error(new TomlError('Invalid boolean, expected true or false'))
+      }
+    }
+
+    parseFalse_e () {
+      if (this.char === CHAR_e) {
+        return this.return(false)
+      } else {
+        throw this.error(new TomlError('Invalid boolean, expected true or false'))
+      }
+    }
+
+    /* INLINE LISTS */
+    parseInlineList () {
+      if (this.char === CHAR_SP || this.char === CTRL_I || this.char === CTRL_M || this.char === CTRL_J) {
+        return null
+      } else if (this.char === Parser.END) {
+        throw this.error(new TomlError('Unterminated inline array'))
+      } else if (this.char === CHAR_NUM) {
+        return this.call(this.parseComment)
+      } else if (this.char === CHAR_RSQB) {
+        return this.return(this.state.resultArr || InlineList())
+      } else {
+        return this.callNow(this.parseValue, this.recordInlineListValue)
+      }
+    }
+    recordInlineListValue (value) {
+      if (this.state.resultArr) {
+        const listType = this.state.resultArr[_contentType]
+        const valueType = tomlType(value)
+        if (listType !== valueType) {
+          throw this.error(new TomlError(`Inline lists must be a single type, not a mix of ${listType} and ${valueType}`))
+        }
+      } else {
+        this.state.resultArr = InlineList(tomlType(value))
+      }
+      if (isFloat(value) || isInteger(value)) {
+        // unbox now that we've verified they're ok
+        this.state.resultArr.push(value.valueOf())
+      } else {
+        this.state.resultArr.push(value)
+      }
+      return this.goto(this.parseInlineListNext)
+    }
+    parseInlineListNext () {
+      if (this.char === CHAR_SP || this.char === CTRL_I || this.char === CTRL_M || this.char === CTRL_J) {
+        return null
+      } else if (this.char === CHAR_NUM) {
+        return this.call(this.parseComment)
+      } else if (this.char === CHAR_COMMA) {
+        return this.next(this.parseInlineList)
+      } else if (this.char === CHAR_RSQB) {
+        return this.goto(this.parseInlineList)
+      } else {
+        throw this.error(new TomlError('Invalid character, expected whitespace, comma (,) or close bracket (])'))
+      }
+    }
+
+    /* INLINE TABLE */
+    parseInlineTable () {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else if (this.char === Parser.END || this.char === CHAR_NUM || this.char === CTRL_J || this.char === CTRL_M) {
+        throw this.error(new TomlError('Unterminated inline array'))
+      } else if (this.char === CHAR_RCUB) {
+        return this.return(this.state.resultTable || InlineTable())
+      } else {
+        if (!this.state.resultTable) this.state.resultTable = InlineTable()
+        return this.callNow(this.parseAssign, this.recordInlineTableValue)
+      }
+    }
+    recordInlineTableValue (kv) {
+      let target = this.state.resultTable
+      let finalKey = kv.key.pop()
+      for (let kw of kv.key) {
+        if (hasKey(target, kw) && (!isTable(target[kw]) || target[kw][_declared])) {
+          throw this.error(new TomlError("Can't redefine existing key"))
+        }
+        target = target[kw] = target[kw] || Table()
+      }
+      if (hasKey(target, finalKey)) {
+        throw this.error(new TomlError("Can't redefine existing key"))
+      }
+      if (isInteger(kv.value) || isFloat(kv.value)) {
+        target[finalKey] = kv.value.valueOf()
+      } else {
+        target[finalKey] = kv.value
+      }
+      return this.goto(this.parseInlineTableNext)
+    }
+    parseInlineTableNext () {
+      if (this.char === CHAR_SP || this.char === CTRL_I) {
+        return null
+      } else if (this.char === Parser.END || this.char === CHAR_NUM || this.char === CTRL_J || this.char === CTRL_M) {
+        throw this.error(new TomlError('Unterminated inline array'))
+      } else if (this.char === CHAR_COMMA) {
+        return this.next(this.parseInlineTable)
+      } else if (this.char === CHAR_RCUB) {
+        return this.goto(this.parseInlineTable)
+      } else {
+        throw this.error(new TomlError('Invalid character, expected whitespace, comma (,) or close bracket (])'))
+      }
+    }
+  }
+  return TOMLParser
+}
+
+
+/***/ }),
+
+/***/ 1939:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+module.exports = parseAsync
+
+const TOMLParser = __nccwpck_require__(8784)
+const prettyError = __nccwpck_require__(7964)
+
+function parseAsync (str, opts) {
+  if (!opts) opts = {}
+  const index = 0
+  const blocksize = opts.blocksize || 40960
+  const parser = new TOMLParser()
+  return new Promise((resolve, reject) => {
+    setImmediate(parseAsyncNext, index, blocksize, resolve, reject)
+  })
+  function parseAsyncNext (index, blocksize, resolve, reject) {
+    if (index >= str.length) {
+      try {
+        return resolve(parser.finish())
+      } catch (err) {
+        return reject(prettyError(err, str))
+      }
+    }
+    try {
+      parser.parse(str.slice(index, index + blocksize))
+      setImmediate(parseAsyncNext, index + blocksize, blocksize, resolve, reject)
+    } catch (err) {
+      reject(prettyError(err, str))
+    }
+  }
+}
+
+
+/***/ }),
+
+/***/ 7964:
+/***/ ((module) => {
+
+"use strict";
+
+module.exports = prettyError
+
+function prettyError (err, buf) {
+  /* istanbul ignore if */
+  if (err.pos == null || err.line == null) return err
+  let msg = err.message
+  msg += ` at row ${err.line + 1}, col ${err.col + 1}, pos ${err.pos}:\n`
+
+  /* istanbul ignore else */
+  if (buf && buf.split) {
+    const lines = buf.split(/\n/)
+    const lineNumWidth = String(Math.min(lines.length, err.line + 3)).length
+    let linePadding = ' '
+    while (linePadding.length < lineNumWidth) linePadding += ' '
+    for (let ii = Math.max(0, err.line - 1); ii < Math.min(lines.length, err.line + 2); ++ii) {
+      let lineNum = String(ii + 1)
+      if (lineNum.length < lineNumWidth) lineNum = ' ' + lineNum
+      if (err.line === ii) {
+        msg += lineNum + '> ' + lines[ii] + '\n'
+        msg += linePadding + '  '
+        for (let hh = 0; hh < err.col; ++hh) {
+          msg += ' '
+        }
+        msg += '^\n'
+      } else {
+        msg += lineNum + ': ' + lines[ii] + '\n'
+      }
+    }
+  }
+  err.message = msg + '\n'
+  return err
+}
+
+
+/***/ }),
+
+/***/ 558:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+module.exports = parseStream
+
+const stream = __nccwpck_require__(2781)
+const TOMLParser = __nccwpck_require__(8784)
+
+function parseStream (stm) {
+  if (stm) {
+    return parseReadable(stm)
+  } else {
+    return parseTransform(stm)
+  }
+}
+
+function parseReadable (stm) {
+  const parser = new TOMLParser()
+  stm.setEncoding('utf8')
+  return new Promise((resolve, reject) => {
+    let readable
+    let ended = false
+    let errored = false
+    function finish () {
+      ended = true
+      if (readable) return
+      try {
+        resolve(parser.finish())
+      } catch (err) {
+        reject(err)
+      }
+    }
+    function error (err) {
+      errored = true
+      reject(err)
+    }
+    stm.once('end', finish)
+    stm.once('error', error)
+    readNext()
+
+    function readNext () {
+      readable = true
+      let data
+      while ((data = stm.read()) !== null) {
+        try {
+          parser.parse(data)
+        } catch (err) {
+          return error(err)
+        }
+      }
+      readable = false
+      /* istanbul ignore if */
+      if (ended) return finish()
+      /* istanbul ignore if */
+      if (errored) return
+      stm.once('readable', readNext)
+    }
+  })
+}
+
+function parseTransform () {
+  const parser = new TOMLParser()
+  return new stream.Transform({
+    objectMode: true,
+    transform (chunk, encoding, cb) {
+      try {
+        parser.parse(chunk.toString(encoding))
+      } catch (err) {
+        this.emit('error', err)
+      }
+      cb()
+    },
+    flush (cb) {
+      try {
+        this.push(parser.finish())
+      } catch (err) {
+        this.emit('error', err)
+      }
+      cb()
+    }
+  })
+}
+
+
+/***/ }),
+
+/***/ 5865:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+module.exports = parseString
+
+const TOMLParser = __nccwpck_require__(8784)
+const prettyError = __nccwpck_require__(7964)
+
+function parseString (str) {
+  if (global.Buffer && global.Buffer.isBuffer(str)) {
+    str = str.toString('utf8')
+  }
+  const parser = new TOMLParser()
+  try {
+    parser.parse(str)
+    return parser.finish()
+  } catch (err) {
+    throw prettyError(err, str)
+  }
+}
+
+
+/***/ }),
+
+/***/ 3848:
+/***/ ((module, __unused_webpack_exports, __nccwpck_require__) => {
+
+"use strict";
+
+module.exports = __nccwpck_require__(5865)
+module.exports.async = __nccwpck_require__(1939)
+module.exports.stream = __nccwpck_require__(558)
+module.exports.prettyError = __nccwpck_require__(7964)
+
+
+/***/ }),
+
+/***/ 6303:
+/***/ ((module) => {
+
+"use strict";
+
+module.exports = stringify
+module.exports.value = stringifyInline
+
+function stringify (obj) {
+  if (obj === null) throw typeError('null')
+  if (obj === void (0)) throw typeError('undefined')
+  if (typeof obj !== 'object') throw typeError(typeof obj)
+
+  if (typeof obj.toJSON === 'function') obj = obj.toJSON()
+  if (obj == null) return null
+  const type = tomlType(obj)
+  if (type !== 'table') throw typeError(type)
+  return stringifyObject('', '', obj)
+}
+
+function typeError (type) {
+  return new Error('Can only stringify objects, not ' + type)
+}
+
+function arrayOneTypeError () {
+  return new Error("Array values can't have mixed types")
+}
+
+function getInlineKeys (obj) {
+  return Object.keys(obj).filter(key => isInline(obj[key]))
+}
+function getComplexKeys (obj) {
+  return Object.keys(obj).filter(key => !isInline(obj[key]))
+}
+
+function toJSON (obj) {
+  let nobj = Array.isArray(obj) ? [] : Object.prototype.hasOwnProperty.call(obj, '__proto__') ? {['__proto__']: undefined} : {}
+  for (let prop of Object.keys(obj)) {
+    if (obj[prop] && typeof obj[prop].toJSON === 'function' && !('toISOString' in obj[prop])) {
+      nobj[prop] = obj[prop].toJSON()
+    } else {
+      nobj[prop] = obj[prop]
+    }
+  }
+  return nobj
+}
+
+function stringifyObject (prefix, indent, obj) {
+  obj = toJSON(obj)
+  var inlineKeys
+  var complexKeys
+  inlineKeys = getInlineKeys(obj)
+  complexKeys = getComplexKeys(obj)
+  var result = []
+  var inlineIndent = indent || ''
+  inlineKeys.forEach(key => {
+    var type = tomlType(obj[key])
+    if (type !== 'undefined' && type !== 'null') {
+      result.push(inlineIndent + stringifyKey(key) + ' = ' + stringifyAnyInline(obj[key], true))
+    }
+  })
+  if (result.length > 0) result.push('')
+  var complexIndent = prefix && inlineKeys.length > 0 ? indent + '  ' : ''
+  complexKeys.forEach(key => {
+    result.push(stringifyComplex(prefix, complexIndent, key, obj[key]))
+  })
+  return result.join('\n')
+}
+
+function isInline (value) {
+  switch (tomlType(value)) {
+    case 'undefined':
+    case 'null':
+    case 'integer':
+    case 'nan':
+    case 'float':
+    case 'boolean':
+    case 'string':
+    case 'datetime':
+      return true
+    case 'array':
+      return value.length === 0 || tomlType(value[0]) !== 'table'
+    case 'table':
+      return Object.keys(value).length === 0
+    /* istanbul ignore next */
+    default:
+      return false
+  }
+}
+
+function tomlType (value) {
+  if (value === undefined) {
+    return 'undefined'
+  } else if (value === null) {
+    return 'null'
+  /* eslint-disable valid-typeof */
+  } else if (typeof value === 'bigint' || (Number.isInteger(value) && !Object.is(value, -0))) {
+    return 'integer'
+  } else if (typeof value === 'number') {
+    return 'float'
+  } else if (typeof value === 'boolean') {
+    return 'boolean'
+  } else if (typeof value === 'string') {
+    return 'string'
+  } else if ('toISOString' in value) {
+    return isNaN(value) ? 'undefined' : 'datetime'
+  } else if (Array.isArray(value)) {
+    return 'array'
+  } else {
+    return 'table'
+  }
+}
+
+function stringifyKey (key) {
+  var keyStr = String(key)
+  if (/^[-A-Za-z0-9_]+$/.test(keyStr)) {
+    return keyStr
+  } else {
+    return stringifyBasicString(keyStr)
+  }
+}
+
+function stringifyBasicString (str) {
+  return '"' + escapeString(str).replace(/"/g, '\\"') + '"'
+}
+
+function stringifyLiteralString (str) {
+  return "'" + str + "'"
+}
+
+function numpad (num, str) {
+  while (str.length < num) str = '0' + str
+  return str
+}
+
+function escapeString (str) {
+  return str.replace(/\\/g, '\\\\')
+    .replace(/[\b]/g, '\\b')
+    .replace(/\t/g, '\\t')
+    .replace(/\n/g, '\\n')
+    .replace(/\f/g, '\\f')
+    .replace(/\r/g, '\\r')
+    /* eslint-disable no-control-regex */
+    .replace(/([\u0000-\u001f\u007f])/, c => '\\u' + numpad(4, c.codePointAt(0).toString(16)))
+    /* eslint-enable no-control-regex */
+}
+
+function stringifyMultilineString (str) {
+  let escaped = str.split(/\n/).map(str => {
+    return escapeString(str).replace(/"(?="")/g, '\\"')
+  }).join('\n')
+  if (escaped.slice(-1) === '"') escaped += '\\\n'
+  return '"""\n' + escaped + '"""'
+}
+
+function stringifyAnyInline (value, multilineOk) {
+  let type = tomlType(value)
+  if (type === 'string') {
+    if (multilineOk && /\n/.test(value)) {
+      type = 'string-multiline'
+    } else if (!/[\b\t\n\f\r']/.test(value) && /"/.test(value)) {
+      type = 'string-literal'
+    }
+  }
+  return stringifyInline(value, type)
+}
+
+function stringifyInline (value, type) {
+  /* istanbul ignore if */
+  if (!type) type = tomlType(value)
+  switch (type) {
+    case 'string-multiline':
+      return stringifyMultilineString(value)
+    case 'string':
+      return stringifyBasicString(value)
+    case 'string-literal':
+      return stringifyLiteralString(value)
+    case 'integer':
+      return stringifyInteger(value)
+    case 'float':
+      return stringifyFloat(value)
+    case 'boolean':
+      return stringifyBoolean(value)
+    case 'datetime':
+      return stringifyDatetime(value)
+    case 'array':
+      return stringifyInlineArray(value.filter(_ => tomlType(_) !== 'null' && tomlType(_) !== 'undefined' && tomlType(_) !== 'nan'))
+    case 'table':
+      return stringifyInlineTable(value)
+    /* istanbul ignore next */
+    default:
+      throw typeError(type)
+  }
+}
+
+function stringifyInteger (value) {
+  /* eslint-disable security/detect-unsafe-regex */
+  return String(value).replace(/\B(?=(\d{3})+(?!\d))/g, '_')
+}
+
+function stringifyFloat (value) {
+  if (value === Infinity) {
+    return 'inf'
+  } else if (value === -Infinity) {
+    return '-inf'
+  } else if (Object.is(value, NaN)) {
+    return 'nan'
+  } else if (Object.is(value, -0)) {
+    return '-0.0'
+  }
+  var chunks = String(value).split('.')
+  var int = chunks[0]
+  var dec = chunks[1] || 0
+  return stringifyInteger(int) + '.' + dec
+}
+
+function stringifyBoolean (value) {
+  return String(value)
+}
+
+function stringifyDatetime (value) {
+  return value.toISOString()
+}
+
+function isNumber (type) {
+  return type === 'float' || type === 'integer'
+}
+function arrayType (values) {
+  var contentType = tomlType(values[0])
+  if (values.every(_ => tomlType(_) === contentType)) return contentType
+  // mixed integer/float, emit as floats
+  if (values.every(_ => isNumber(tomlType(_)))) return 'float'
+  return 'mixed'
+}
+function validateArray (values) {
+  const type = arrayType(values)
+  if (type === 'mixed') {
+    throw arrayOneTypeError()
+  }
+  return type
+}
+
+function stringifyInlineArray (values) {
+  values = toJSON(values)
+  const type = validateArray(values)
+  var result = '['
+  var stringified = values.map(_ => stringifyInline(_, type))
+  if (stringified.join(', ').length > 60 || /\n/.test(stringified)) {
+    result += '\n  ' + stringified.join(',\n  ') + '\n'
+  } else {
+    result += ' ' + stringified.join(', ') + (stringified.length > 0 ? ' ' : '')
+  }
+  return result + ']'
+}
+
+function stringifyInlineTable (value) {
+  value = toJSON(value)
+  var result = []
+  Object.keys(value).forEach(key => {
+    result.push(stringifyKey(key) + ' = ' + stringifyAnyInline(value[key], false))
+  })
+  return '{ ' + result.join(', ') + (result.length > 0 ? ' ' : '') + '}'
+}
+
+function stringifyComplex (prefix, indent, key, value) {
+  var valueType = tomlType(value)
+  /* istanbul ignore else */
+  if (valueType === 'array') {
+    return stringifyArrayOfTables(prefix, indent, key, value)
+  } else if (valueType === 'table') {
+    return stringifyComplexTable(prefix, indent, key, value)
+  } else {
+    throw typeError(valueType)
+  }
+}
+
+function stringifyArrayOfTables (prefix, indent, key, values) {
+  values = toJSON(values)
+  validateArray(values)
+  var firstValueType = tomlType(values[0])
+  /* istanbul ignore if */
+  if (firstValueType !== 'table') throw typeError(firstValueType)
+  var fullKey = prefix + stringifyKey(key)
+  var result = ''
+  values.forEach(table => {
+    if (result.length > 0) result += '\n'
+    result += indent + '[[' + fullKey + ']]\n'
+    result += stringifyObject(fullKey + '.', indent, table)
+  })
+  return result
+}
+
+function stringifyComplexTable (prefix, indent, key, value) {
+  var fullKey = prefix + stringifyKey(key)
+  var result = ''
+  if (getInlineKeys(value).length > 0) {
+    result += indent + '[' + fullKey + ']\n'
+  }
+  return result + stringifyObject(fullKey + '.', indent, value)
+}
+
+
+/***/ }),
+
+/***/ 2901:
+/***/ ((__unused_webpack_module, exports, __nccwpck_require__) => {
+
+"use strict";
+
+exports.parse = __nccwpck_require__(3848)
+exports.stringify = __nccwpck_require__(6303)
+
+
 /***/ }),
 
 /***/ 7171:
@@ -67559,31 +69727,40 @@ function cacheDependencies(cache, pythonVersion) {
         yield cacheDistributor.restoreCache();
     });
 }
-function resolveVersionInput() {
+function resolveVersionInputFromDefaultFile() {
-    const versions = core.getMultilineInput('python-version');
+    const couples = [
-    let versionFile = core.getInput('python-version-file');
+        ['.python-version', utils_1.getVersionInputFromPlainFile]
-    if (versions.length && versionFile) {
+    ];
-        core.warning('Both python-version and python-version-file inputs are specified, only python-version will be used.');
+    for (const [versionFile, _fn] of couples) {
-    }
+        utils_1.logWarning(`Neither 'python-version' nor 'python-version-file' inputs were supplied. Attempting to find '${versionFile}' file.`);
-    if (versions.length) {
+        if (fs_1.default.existsSync(versionFile)) {
-        return versions;
+            return _fn(versionFile);
-    }
+        }
-    if (versionFile) {
+        else {
-        if (!fs_1.default.existsSync(versionFile)) {
+            utils_1.logWarning(`${versionFile} doesn't exist.`);
-            throw new Error(`The specified python version file at: ${versionFile} doesn't exist.`);
         }
-        const version = fs_1.default.readFileSync(versionFile, 'utf8');
-        core.info(`Resolved ${versionFile} as ${version}`);
-        return [version];
     }
-    utils_1.logWarning("Neither 'python-version' nor 'python-version-file' inputs were supplied. Attempting to find '.python-version' file.");
+    return [];
-    versionFile = '.python-version';
+}
-    if (fs_1.default.existsSync(versionFile)) {
+function resolveVersionInput() {
-        const version = fs_1.default.readFileSync(versionFile, 'utf8');
+    let versions = core.getMultilineInput('python-version');
-        core.info(`Resolved ${versionFile} as ${version}`);
+    const versionFile = core.getInput('python-version-file');
-        return [version];
+    if (versions.length) {
+        if (versionFile) {
+            core.warning('Both python-version and python-version-file inputs are specified, only python-version will be used.');
+        }
+    }
+    else {
+        if (versionFile) {
+            if (!fs_1.default.existsSync(versionFile)) {
+                throw new Error(`The specified python version file at: ${versionFile} doesn't exist.`);
+            }
+            versions = utils_1.getVersionInputFromFile(versionFile);
+        }
+        else {
+            versions = resolveVersionInputFromDefaultFile();
+        }
     }
-    utils_1.logWarning(`${versionFile} doesn't exist.`);
     return versions;
 }
 function run() {
@@ -67679,13 +69856,14 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
     return (mod && mod.__esModule) ? mod : { "default": mod };
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.getOSInfo = exports.getLinuxInfo = exports.logWarning = exports.isCacheFeatureAvailable = exports.isGhes = exports.validatePythonVersionFormatForPyPy = exports.writeExactPyPyVersionFile = exports.readExactPyPyVersionFile = exports.getPyPyVersionFromPath = exports.isNightlyKeyword = exports.validateVersion = exports.createSymlinkInFolder = exports.WINDOWS_PLATFORMS = exports.WINDOWS_ARCHS = exports.IS_MAC = exports.IS_LINUX = exports.IS_WINDOWS = void 0;
+exports.getVersionInputFromFile = exports.getVersionInputFromPlainFile = exports.getVersionInputFromTomlFile = exports.getOSInfo = exports.getLinuxInfo = exports.logWarning = exports.isCacheFeatureAvailable = exports.isGhes = exports.validatePythonVersionFormatForPyPy = exports.writeExactPyPyVersionFile = exports.readExactPyPyVersionFile = exports.getPyPyVersionFromPath = exports.isNightlyKeyword = exports.validateVersion = exports.createSymlinkInFolder = exports.WINDOWS_PLATFORMS = exports.WINDOWS_ARCHS = exports.IS_MAC = exports.IS_LINUX = exports.IS_WINDOWS = void 0;
 /* eslint no-unsafe-finally: "off" */
 const cache = __importStar(__nccwpck_require__(7799));
 const core = __importStar(__nccwpck_require__(2186));
 const fs_1 = __importDefault(__nccwpck_require__(7147));
 const path = __importStar(__nccwpck_require__(1017));
 const semver = __importStar(__nccwpck_require__(1383));
+const toml = __importStar(__nccwpck_require__(2901));
 const exec = __importStar(__nccwpck_require__(1514));
 exports.IS_WINDOWS = process.platform === 'win32';
 exports.IS_LINUX = process.platform === 'linux';
@@ -67828,6 +70006,76 @@ function getOSInfo() {
     });
 }
 exports.getOSInfo = getOSInfo;
+/**
+ * Extract a value from an object by following the keys path provided.
+ * If the value is present, it is returned. Otherwise undefined is returned.
+ */
+function extractValue(obj, keys) {
+    if (keys.length > 0) {
+        const value = obj[keys[0]];
+        if (keys.length > 1 && value !== undefined) {
+            return extractValue(value, keys.slice(1));
+        }
+        else {
+            return value;
+        }
+    }
+    else {
+        return;
+    }
+}
+/**
+ * Python version extracted from the TOML file.
+ * If the `project` key is present at the root level, the version is assumed to
+ * be specified according to PEP 621 in `project.requires-python`.
+ * Otherwise, if the `tool` key is present at the root level, the version is
+ * assumed to be specified using poetry under `tool.poetry.dependencies.python`.
+ * If none is present, returns an empty list.
+ */
+function getVersionInputFromTomlFile(versionFile) {
+    core.debug(`Trying to resolve version form ${versionFile}`);
+    const pyprojectFile = fs_1.default.readFileSync(versionFile, 'utf8');
+    const pyprojectConfig = toml.parse(pyprojectFile);
+    let keys = [];
+    if ('project' in pyprojectConfig) {
+        // standard project metadata (PEP 621)
+        keys = ['project', 'requires-python'];
+    }
+    else {
+        // python poetry
+        keys = ['tool', 'poetry', 'dependencies', 'python'];
+    }
+    const versions = [];
+    const version = extractValue(pyprojectConfig, keys);
+    if (version !== undefined) {
+        versions.push(version);
+    }
+    core.info(`Extracted ${versions} from ${versionFile}`);
+    return Array.from(versions, version => version.split(',').join(' '));
+}
+exports.getVersionInputFromTomlFile = getVersionInputFromTomlFile;
+/**
+ * Python version extracted from a plain text file.
+ */
+function getVersionInputFromPlainFile(versionFile) {
+    core.debug(`Trying to resolve version form ${versionFile}`);
+    const version = fs_1.default.readFileSync(versionFile, 'utf8');
+    core.info(`Resolved ${versionFile} as ${version}`);
+    return [version];
+}
+exports.getVersionInputFromPlainFile = getVersionInputFromPlainFile;
+/**
+ * Python version extracted from a plain or TOML file.
+ */
+function getVersionInputFromFile(versionFile) {
+    if (versionFile.endsWith('.toml')) {
+        return getVersionInputFromTomlFile(versionFile);
+    }
+    else {
+        return getVersionInputFromPlainFile(versionFile);
+    }
+}
+exports.getVersionInputFromFile = getVersionInputFromFile;
 
 
 /***/ }),

docs/advanced-usage.md

@@ -78,6 +78,17 @@ steps:
 
 You can also use several types of ranges that are specified in [semver](https://github.com/npm/node-semver#ranges), for instance:
 
+- **[ranges](https://github.com/npm/node-semver#ranges)** to download and set up the latest available version of Python satisfying a range:
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-python@v4
+  with:
+    python-version: '>=3.9 <3.10'
+- run: python my_script.py
+```
+
 - **[hyphen ranges](https://github.com/npm/node-semver#hyphen-ranges-xyz---abc)** to download and set up the latest available version of Python (includes both pre-release and stable versions):
 
 ```yaml
@@ -251,6 +262,16 @@ steps:
     python-version-file: '.python-version' # Read python version from a file .python-version
 - run: python my_script.py
 ```
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-python@v4
+  with:
+    python-version-file: 'pyproject.toml' # Read python version from a file pyproject.toml
+- run: python my_script.py
+```
+
 ## Check latest version
 
 The `check-latest` flag defaults to `false`. Use the default or set `check-latest` to `false` if you prefer stability and if you want to ensure a specific `Python or PyPy` version is always used.

package-lock.json

@@ -16,6 +16,7 @@
         "@actions/http-client": "^1.0.11",
         "@actions/io": "^1.0.2",
         "@actions/tool-cache": "^1.5.5",
+        "@iarna/toml": "^2.2.5",
         "semver": "^7.1.3"
       },
       "devDependencies": {
@@ -2048,6 +2049,11 @@
       "integrity": "sha512-ZnQMnLV4e7hDlUvw8H+U8ASL02SS2Gn6+9Ac3wGGLIe7+je2AeAOxPY+izIPJDfFDb7eDjev0Us8MO1iFRN8hA==",
       "dev": true
     },
+    "node_modules/@iarna/toml": {
+      "version": "2.2.5",
+      "resolved": "https://registry.npmjs.org/@iarna/toml/-/toml-2.2.5.tgz",
+      "integrity": "sha512-trnsAYxU3xnS1gPHPyU961coFyLkh4gAD/0zQ5mymY4yOZ+CYvsPqUbOFSw0aDM4y0tV7tiFxL/1XfXPNC6IPg=="
+    },
     "node_modules/@istanbuljs/load-nyc-config": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.1.0.tgz",
@@ -8519,6 +8525,11 @@
       "integrity": "sha512-ZnQMnLV4e7hDlUvw8H+U8ASL02SS2Gn6+9Ac3wGGLIe7+je2AeAOxPY+izIPJDfFDb7eDjev0Us8MO1iFRN8hA==",
       "dev": true
     },
+    "@iarna/toml": {
+      "version": "2.2.5",
+      "resolved": "https://registry.npmjs.org/@iarna/toml/-/toml-2.2.5.tgz",
+      "integrity": "sha512-trnsAYxU3xnS1gPHPyU961coFyLkh4gAD/0zQ5mymY4yOZ+CYvsPqUbOFSw0aDM4y0tV7tiFxL/1XfXPNC6IPg=="
+    },
     "@istanbuljs/load-nyc-config": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.1.0.tgz",

package.json

@@ -32,6 +32,7 @@
     "@actions/http-client": "^1.0.11",
     "@actions/io": "^1.0.2",
     "@actions/tool-cache": "^1.5.5",
+    "@iarna/toml": "^2.2.5",
     "semver": "^7.1.3"
   },
   "devDependencies": {

src/setup-python.ts

@@ -5,7 +5,13 @@ import * as path from 'path';
 import * as os from 'os';
 import fs from 'fs';
 import {getCacheDistributor} from './cache-distributions/cache-factory';
-import {isCacheFeatureAvailable, logWarning, IS_MAC} from './utils';
+import {
+  isCacheFeatureAvailable,
+  logWarning,
+  IS_MAC,
+  getVersionInputFromFile,
+  getVersionInputFromPlainFile
+} from './utils';
 
 function isPyPyVersion(versionSpec: string) {
   return versionSpec.startsWith('pypy');
@@ -22,43 +28,46 @@ async function cacheDependencies(cache: string, pythonVersion: string) {
   await cacheDistributor.restoreCache();
 }
 
-function resolveVersionInput() {
+function resolveVersionInputFromDefaultFile(): string[] {
-  const versions = core.getMultilineInput('python-version');
+  const couples: [string, (versionFile: string) => string[]][] = [
-  let versionFile = core.getInput('python-version-file');
+    ['.python-version', getVersionInputFromPlainFile]
-
+  ];
-  if (versions.length && versionFile) {
+  for (const [versionFile, _fn] of couples) {
-    core.warning(
+    logWarning(
-      'Both python-version and python-version-file inputs are specified, only python-version will be used.'
+      `Neither 'python-version' nor 'python-version-file' inputs were supplied. Attempting to find '${versionFile}' file.`
     );
+    if (fs.existsSync(versionFile)) {
+      return _fn(versionFile);
+    } else {
+      logWarning(`${versionFile} doesn't exist.`);
+    }
   }
+  return [];
+}
+
+function resolveVersionInput() {
+  let versions = core.getMultilineInput('python-version');
+  const versionFile = core.getInput('python-version-file');
 
   if (versions.length) {
-    return versions;
+    if (versionFile) {
-  }
+      core.warning(
-
+        'Both python-version and python-version-file inputs are specified, only python-version will be used.'
-  if (versionFile) {
-    if (!fs.existsSync(versionFile)) {
-      throw new Error(
-        `The specified python version file at: ${versionFile} doesn't exist.`
       );
     }
-    const version = fs.readFileSync(versionFile, 'utf8');
+  } else {
-    core.info(`Resolved ${versionFile} as ${version}`);
+    if (versionFile) {
-    return [version];
+      if (!fs.existsSync(versionFile)) {
+        throw new Error(
+          `The specified python version file at: ${versionFile} doesn't exist.`
+        );
+      }
+      versions = getVersionInputFromFile(versionFile);
+    } else {
+      versions = resolveVersionInputFromDefaultFile();
+    }
   }
 
-  logWarning(
-    "Neither 'python-version' nor 'python-version-file' inputs were supplied. Attempting to find '.python-version' file."
-  );
-  versionFile = '.python-version';
-  if (fs.existsSync(versionFile)) {
-    const version = fs.readFileSync(versionFile, 'utf8');
-    core.info(`Resolved ${versionFile} as ${version}`);
-    return [version];
-  }
-
-  logWarning(`${versionFile} doesn't exist.`);
-
   return versions;
 }
 

src/utils.ts

@@ -4,6 +4,7 @@ import * as core from '@actions/core';
 import fs from 'fs';
 import * as path from 'path';
 import * as semver from 'semver';
+import * as toml from '@iarna/toml';
 import * as exec from '@actions/exec';
 
 export const IS_WINDOWS = process.platform === 'win32';
@@ -181,3 +182,73 @@ export async function getOSInfo() {
     return osInfo;
   }
 }
+
+/**
+ * Extract a value from an object by following the keys path provided.
+ * If the value is present, it is returned. Otherwise undefined is returned.
+ */
+function extractValue(obj: any, keys: string[]): string | undefined {
+  if (keys.length > 0) {
+    const value = obj[keys[0]];
+    if (keys.length > 1 && value !== undefined) {
+      return extractValue(value, keys.slice(1));
+    } else {
+      return value;
+    }
+  } else {
+    return;
+  }
+}
+
+/**
+ * Python version extracted from the TOML file.
+ * If the `project` key is present at the root level, the version is assumed to
+ * be specified according to PEP 621 in `project.requires-python`.
+ * Otherwise, if the `tool` key is present at the root level, the version is
+ * assumed to be specified using poetry under `tool.poetry.dependencies.python`.
+ * If none is present, returns an empty list.
+ */
+export function getVersionInputFromTomlFile(versionFile: string): string[] {
+  core.debug(`Trying to resolve version form ${versionFile}`);
+
+  const pyprojectFile = fs.readFileSync(versionFile, 'utf8');
+  const pyprojectConfig = toml.parse(pyprojectFile);
+  let keys = [];
+
+  if ('project' in pyprojectConfig) {
+    // standard project metadata (PEP 621)
+    keys = ['project', 'requires-python'];
+  } else {
+    // python poetry
+    keys = ['tool', 'poetry', 'dependencies', 'python'];
+  }
+  const versions = [];
+  const version = extractValue(pyprojectConfig, keys);
+  if (version !== undefined) {
+    versions.push(version);
+  }
+
+  core.info(`Extracted ${versions} from ${versionFile}`);
+  return Array.from(versions, version => version.split(',').join(' '));
+}
+
+/**
+ * Python version extracted from a plain text file.
+ */
+export function getVersionInputFromPlainFile(versionFile: string): string[] {
+  core.debug(`Trying to resolve version form ${versionFile}`);
+  const version = fs.readFileSync(versionFile, 'utf8');
+  core.info(`Resolved ${versionFile} as ${version}`);
+  return [version];
+}
+
+/**
+ * Python version extracted from a plain or TOML file.
+ */
+export function getVersionInputFromFile(versionFile: string): string[] {
+  if (versionFile.endsWith('.toml')) {
+    return getVersionInputFromTomlFile(versionFile);
+  } else {
+    return getVersionInputFromPlainFile(versionFile);
+  }
+}