13099864828

Committed 02 Feb 2025 02:52PM UTC coverage: 64.306% (-0.06%) from 64.367%

Build # 13099864828

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push

github

Committed by

Siubaak

Commit Message

[test] add test case for spread element iterator type checking

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53.57

/src/evaluate/expression.ts

import { define, freeze, getGetter, getSetter, createSymbol, assign, getDptor, WINDOW } from '../share/util'
import { SUPER, NOCTOR, AWAIT, CLSCTOR, NEWTARGET, SUPERCALL, PRIVATE, IMPORT } from '../share/const'
import { pattern, createFunc, createClass } from './helper'
import { Variable, Prop } from '../scope/variable'
import { Identifier } from './identifier'
import { Literal } from './literal'
import * as acorn from 'acorn'
import Scope from '../scope'
import evaluate from '.'

export function* ThisExpression(node: acorn.ThisExpression, scope: Scope) {
  const superCall = scope.find(SUPERCALL)
  if (superCall && !superCall.get()) {
    throw new ReferenceError('Must call super constructor in derived class '
      + 'before accessing \'this\' or returning from derived constructor')
  } else {
    return scope.find('this').get()
  }
}

export function* ArrayExpression(node: acorn.ArrayExpression, scope: Scope) {
  let results: any[] = []
  for (let i = 0; i < node.elements.length; i++) {
    const item = node.elements[i]
    if (item.type === 'SpreadElement') {
      results = results.concat(yield* SpreadElement(item, scope))
    } else {
      results.push(yield* evaluate(item, scope))
    }
  }
  return results
}

export function* ObjectExpression(node: acorn.ObjectExpression, scope: Scope) {
  const object: { [key: string]: any } = {}
  for (let i = 0; i < node.properties.length; i++) {
    const property = node.properties[i]
    if (property.type === 'SpreadElement') {
      assign(object, yield* SpreadElement(property, scope, { spreadProps: true }))
    } else {
      let key: string
      const propKey = property.key
      if (property.computed) {
        key = yield* evaluate(propKey, scope)
      } else {
        if (propKey.type === 'Identifier') {
          key = propKey.name
        } else {
          key = '' + (yield* Literal(propKey as acorn.Literal, scope))
        }
      }
  
      const value = yield* evaluate(property.value, scope)
  
      const propKind = property.kind
      if (propKind === 'init') {
        object[key] = value
      } else if (propKind === 'get') {
        const oriDptor = getDptor(object, key)
        define(object, key, {
          get: value,
          set: oriDptor && oriDptor.set,
          enumerable: true,
          configurable: true
        })
      } else { // propKind === 'set'
        const oriDptor = getDptor(object, key)
        define(object, key, {
          get: oriDptor && oriDptor.get,
          set: value,
          enumerable: true,
          configurable: true
        })
      }
    }
  }
  return object
}

export function* FunctionExpression(node: acorn.FunctionExpression, scope: Scope) {
  if (node.id && node.id.name) {
    // it's for accessing function expression by its name inside
    // e.g. const a = function b() { console.log(b) }
    const tmpScope = new Scope(scope)
    const func = createFunc(node, tmpScope)
    tmpScope.const(node.id.name, func)
    return func
  } else {
    return createFunc(node, scope)
  }
}

export function* UnaryExpression(node: acorn.UnaryExpression, scope: Scope) {
  const arg = node.argument
  switch (node.operator) {
    case '+': return +(yield* evaluate(arg, scope))
    case '-': return -(yield* evaluate(arg, scope))
    case '!': return !(yield* evaluate(arg, scope))
    case '~': return ~(yield* evaluate(arg, scope))
    case 'void': return void (yield* evaluate(arg, scope))
    case 'typeof':
      if (arg.type === 'Identifier') {
        return typeof (yield* Identifier(arg, scope, { throwErr: false }))
      } else {
        return typeof (yield* evaluate(arg, scope))
      }
    case 'delete':
      if (arg.type === 'MemberExpression') {
        const variable: Prop = yield* MemberExpression(arg, scope, { getVar: true })
        return variable.del()
      } else if (arg.type === 'Identifier') {
        throw new SyntaxError('Delete of an unqualified identifier in strict mode')
      } else {
        yield* evaluate(arg, scope)
        return true
      }
    /* istanbul ignore next */
    default: throw new SyntaxError(`Unexpected token ${node.operator}`)
  }
}

export function* UpdateExpression(node: acorn.UpdateExpression, scope: Scope) {
  const arg = node.argument
  
  let variable: Variable
  if (arg.type === 'Identifier') {
    variable = yield* Identifier(arg, scope, { getVar: true })
  } else if (arg.type === 'MemberExpression') {
    variable = yield* MemberExpression(arg, scope, { getVar: true })
  } else {
    /* istanbul ignore next */
    throw new SyntaxError('Unexpected token')
  }

  const value = variable.get()
  if (node.operator === '++') {
    variable.set(value + 1)
    return node.prefix ? variable.get() : value
  } else if (node.operator === '--') {
    variable.set(value - 1)
    return node.prefix ? variable.get() : value
  } else {
    /* istanbul ignore next */
    throw new SyntaxError(`Unexpected token ${node.operator}`)
  }
}

export function* BinaryExpression(node: acorn.BinaryExpression, scope: Scope) {
  let left: any
  let right: any

  if (node.left.type === 'PrivateIdentifier') {
    left = node.left.name
    right = yield* evaluate(node.right, scope)
    right = right[PRIVATE] || {} // compatible with checking by "#private in object"
  } else {
    left = yield* evaluate(node.left, scope)
    right = yield* evaluate(node.right, scope)
  }

  switch (node.operator) {
    case '==': return left == right
    case '!=': return left != right
    case '===': return left === right
    case '!==': return left !== right
    case '<': return left < right
    case '<=': return left <= right
    case '>': return left > right
    case '>=': return left >= right
    case '<<': return left << right
    case '>>': return left >> right
    case '>>>': return left >>> right
    case '+': return left + right
    case '-': return left - right
    case '*': return left * right
    case '**': return left ** right
    case '/': return left / right
    case '%': return left % right
    case '|': return left | right
    case '^': return left ^ right
    case '&': return left & right
    case 'in': return left in right
    case 'instanceof': return left instanceof right
    /* istanbul ignore next */
    default: throw new SyntaxError(`Unexpected token ${node.operator}`)
  }
}

export function* AssignmentExpression(node: acorn.AssignmentExpression, scope: Scope) {
  const left = node.left
  let variable: Variable
  if (left.type === 'Identifier') {
    variable = yield* Identifier(left, scope, { getVar: true, throwErr: false })
    if (!variable) {
      const win = scope.global().find('window').get()
      variable = new Prop(win, left.name)
    }
  } else if (left.type === 'MemberExpression') {
    variable = yield* MemberExpression(left, scope, { getVar: true })
  } else {
    const value = yield* evaluate(node.right, scope)
    return yield* pattern(left, scope, { feed: value })
  }

  const value = yield* evaluate(node.right, scope)
  switch (node.operator) {
    case '=': variable.set(value); return variable.get()
    case '+=': variable.set(variable.get() + value); return variable.get()
    case '-=': variable.set(variable.get() - value); return variable.get()
    case '*=': variable.set(variable.get() * value); return variable.get()
    case '/=': variable.set(variable.get() / value); return variable.get()
    case '%=': variable.set(variable.get() % value); return variable.get()
    case '**=': variable.set(variable.get() ** value); return variable.get()
    case '<<=': variable.set(variable.get() << value); return variable.get()
    case '>>=': variable.set(variable.get() >> value); return variable.get()
    case '>>>=': variable.set(variable.get() >>> value); return variable.get()
    case '|=': variable.set(variable.get() | value); return variable.get()
    case '^=': variable.set(variable.get() ^ value); return variable.get()
    case '&=': variable.set(variable.get() & value); return variable.get()
    case '??=': variable.set(variable.get() ?? value); return variable.get()
    case '&&=': variable.set(variable.get() && value); return variable.get()
    case '||=': variable.set(variable.get() || value); return variable.get()
    /* istanbul ignore next */
    default: throw new SyntaxError(`Unexpected token ${node.operator}`)
  }
}

export function* LogicalExpression(node: acorn.LogicalExpression, scope: Scope) {
  switch (node.operator) {
    case '||':
      return (yield* evaluate(node.left, scope)) || (yield* evaluate(node.right, scope))
    case '&&':
      return (yield* evaluate(node.left, scope)) && (yield* evaluate(node.right, scope))
    case '??':
      return (yield* evaluate(node.left, scope)) ?? (yield* evaluate(node.right, scope))
    default:
      /* istanbul ignore next */
      throw new SyntaxError(`Unexpected token ${node.operator}`)
  }
}

export interface MemberExpressionOptions {
  getObj?: boolean
  getVar?: boolean
}

export function* MemberExpression(
  node: acorn.MemberExpression,
  scope: Scope,
  options: MemberExpressionOptions = {},
) {
  const { getObj = false, getVar = false } = options

  let object: any
  if (node.object.type === 'Super') {
    object = yield* Super(node.object, scope, { getProto: true })
  } else {
    object = yield* evaluate(node.object, scope)
  }

  if (getObj) return object

  let key: string
  let priv: boolean = false

  if (node.computed) {
    key = yield* evaluate(node.property, scope)
  } else if (node.property.type === 'PrivateIdentifier') {
    key = node.property.name
    priv = true
  } else {
    key = (node.property as acorn.Identifier).name
  }

  if (priv) {
    object = object[PRIVATE]
  }

  if (getVar) {
    // left value
    const setter = getSetter(object, key)
    if (node.object.type === 'Super' && setter) {
      // transfer the setter from super to this with a private key
      const thisObject = scope.find('this').get()
      const privateKey = createSymbol(key)
      define(thisObject, privateKey, { set: setter })
      return new Prop(thisObject, privateKey)
    } else {
      return new Prop(object, key)
    }
  } else {
    // right value
    const getter = getGetter(object, key)
    if (node.object.type === 'Super' && getter) {
      const thisObject = scope.find('this').get()
      // if it's optional chaining, check if this ref is null or undefined, so use ==
      if (node.optional && thisObject == null) {
        return undefined
      }
      return getter.call(thisObject)
    } else {
      // if it's optional chaining, check if object is null or undefined, so use ==
      if (node.optional && object == null) {
        return undefined
      }
      return object[key]
    }
  }
}

export function* ConditionalExpression(node: acorn.ConditionalExpression, scope: Scope) {
  return (yield* evaluate(node.test, scope))
    ? (yield* evaluate(node.consequent, scope))
    : (yield* evaluate(node.alternate, scope))
}

export function* CallExpression(node: acorn.CallExpression, scope: Scope) {
  let func: any
  let object: any

  if (node.callee.type === 'MemberExpression') {
    object = yield* MemberExpression(node.callee, scope, { getObj: true })

    // if it's optional chaining, check if object is null or undefined, so use ==
    if (node.callee.optional && object == null) {
      return undefined
    }

    // get key
    let key: string
    let priv: boolean = false

    if (node.callee.computed) {
      key = yield* evaluate(node.callee.property, scope)
    } else if (node.callee.property.type === 'PrivateIdentifier') {
      key = node.callee.property.name
      priv = true
    } else {
      key = (node.callee.property as acorn.Identifier).name
    }

    let obj = object

    if (priv) {
      obj = obj[PRIVATE]
    }

    // right value
    if (node.callee.object.type === 'Super') {
      const thisObject = scope.find('this').get()
      func = obj[key].bind(thisObject)
    } else {
      func = obj[key]
    }

    // if it's optional chaining, check if function is null or undefined, so use ==
    if (node.optional && func == null) {
      return undefined
    }

    if (typeof func !== 'function') {
      throw new TypeError(`${key} is not a function`)
    } else if (func[CLSCTOR]) {
      throw new TypeError(`Class constructor ${key} cannot be invoked without 'new'`)
    }
  } else {
    object = scope.find('this').get()
    func = yield* evaluate(node.callee, scope)

    // if it's optional chaining, check if function is null or undefined, so use ==
    if (node.optional && func == null) {
      return undefined
    }

    if (typeof func !== 'function' || node.callee.type !== 'Super' && func[CLSCTOR]) {
      let name: string
      if (node.callee.type === 'Identifier') {
        name = node.callee.name
      } else {
        try {
          name = JSON.stringify(func)
        } catch (err) {
          name = '' + func
        }
      }
      if (typeof func !== 'function') {
        throw new TypeError(`${name} is not a function`)
      } else {
        throw new TypeError(`Class constructor ${name} cannot be invoked without 'new'`)
      }
    }
  }

  let args: any[] = []
  for (let i = 0; i < node.arguments.length; i++) {
    const arg = node.arguments[i]
    if (arg.type === 'SpreadElement') {
      args = args.concat(yield* SpreadElement(arg, scope))
    } else {
      args.push(yield* evaluate(arg, scope))
    }
  }

  if (node.callee.type === 'Super') {
    const superCall = scope.find(SUPERCALL)
    if (superCall.get()) {
      throw new ReferenceError('Super constructor may only be called once')
    } else {
      scope.find(SUPERCALL).set(true)
    }
  }

  try {
    return func.apply(object, args)
  } catch (err) {
    if (
      err instanceof TypeError && err.message === 'Illegal invocation'
      && func.toString().indexOf('[native code]') !== -1
    ) {
      // you will get "TypeError: Illegal invocation" if not binding native function with window
      const win = scope.global().find('window').get()
      if (win && win[WINDOW]) {
        return func.apply(win[WINDOW], args)
      }
    }
    throw err
  }
}

export function* NewExpression(node: acorn.NewExpression, scope: Scope) {
  const constructor = yield* evaluate(node.callee, scope)

  if (typeof constructor !== 'function') {
    let name: string
    if (node.callee.type === 'Identifier') {
      name = node.callee.name
    } else {
      try {
        name = JSON.stringify(constructor)
      } catch (err) {
        name = '' + constructor
      }
    }
    throw new TypeError(`${name} is not a constructor`)
  } else if (constructor[NOCTOR]) {
    throw new TypeError(`${constructor.name || '(intermediate value)'} is not a constructor`)
  }

  let args: any[] = []
  for (let i = 0; i < node.arguments.length; i++) {
    const arg = node.arguments[i]
    if (arg.type === 'SpreadElement') {
      args = args.concat(yield* SpreadElement(arg, scope))
    } else {
      args.push(yield* evaluate(arg, scope))
    }
  }

  return new constructor(...args)
}

export function* MetaProperty(node: acorn.MetaProperty, scope: Scope) {
  if (node.meta.name === 'new' && node.property.name === 'target') {
    return scope.find(NEWTARGET).get()
  } else if (node.meta.name === 'import' && node.property.name === 'meta') {
    return { url: '' }
  }
}

export function* SequenceExpression(node: acorn.SequenceExpression, scope: Scope) {
  let result: any
  for (let i = 0; i < node.expressions.length; i++) {
    result = yield* evaluate(node.expressions[i], scope)
  }
  return result
}

export function* ArrowFunctionExpression(node: acorn.ArrowFunctionExpression, scope: Scope) {
  return createFunc(node, scope)
}

export function* TemplateLiteral(node: acorn.TemplateLiteral, scope: Scope) {
  const quasis = node.quasis.slice()
  const expressions = node.expressions.slice()

  let result = ''
  let temEl: acorn.TemplateElement
  let expr: acorn.Expression

  while (temEl = quasis.shift()) {
    result += yield* TemplateElement(temEl, scope)
    expr = expressions.shift()
    if (expr) {
      result += yield* evaluate(expr, scope)
    }
  }

  return result
}

export function* TaggedTemplateExpression(node: acorn.TaggedTemplateExpression, scope: Scope) {
  const tagFunc = yield* evaluate(node.tag, scope)

  const quasis = node.quasi.quasis
  const str = quasis.map(v => v.value.cooked)
  const raw = quasis.map(v => v.value.raw)

  define(str, 'raw', {
    value: freeze(raw)
  })

  const expressions = node.quasi.expressions

  const args = []
  if (expressions) {
    for (let i = 0; i < expressions.length; i++) {
      args.push(yield* evaluate(expressions[i], scope))
    }
  }

  return tagFunc(freeze(str), ...args)
}

export function* TemplateElement(node: acorn.TemplateElement, scope: Scope) {
  return node.value.raw
}

export function* ClassExpression(node: acorn.ClassExpression, scope: Scope) {
  if (node.id && node.id.name) {
    // it's for accessing class expression by its name inside
    // e.g. const a = class b { log() { console.log(b) } }
    const tmpScope = new Scope(scope)
    const klass = yield* createClass(node, tmpScope)
    tmpScope.const(node.id.name, klass)
    return klass
  } else {
    return yield* createClass(node, scope)
  }
}

export interface SuperOptions {
  getProto?: boolean
}

export function* Super(node: acorn.Super, scope: Scope, options: SuperOptions = {}) {
  const { getProto = false } = options
  const superClass = scope.find(SUPER).get()
  return getProto ? superClass.prototype: superClass
}

export interface SpreadOptions {
  spreadProps?: boolean
}

export function* SpreadElement(node: acorn.SpreadElement, scope: Scope, options: SpreadOptions = {}) {
  const result = yield* evaluate(node.argument, scope)
  if (options.spreadProps) {
    return result
  }
  if (typeof Symbol === 'function' && typeof result[Symbol.iterator] !== 'function') {
    throw new TypeError('Spread syntax requires ...iterable[Symbol.iterator] to be a function')
  }
  return [...result]
}

export function* ChainExpression(node: acorn.ChainExpression, scope: Scope) {
  return yield* evaluate(node.expression, scope)
}

export function* ImportExpression(node: acorn.ImportExpression, scope: Scope) {
  const globalScope = scope.global()

  const source = yield* evaluate(node.source, scope)
  const module = globalScope.find(IMPORT + source)
  let value: any
  if (module) {
    const result = module.get()
    if (result) {
      if (typeof result === 'function') {
        value = result()
      } else if (typeof result === 'object') {
        value = result
      }
    }
  }

  if (!value || typeof value !== 'object') {
    return Promise.reject(new TypeError(`Failed to resolve module specifier "${source}"`))
  }

  return Promise.resolve(value)
}

/*<remove>*/
export function* YieldExpression(node: acorn.YieldExpression, scope: Scope): any {
  const res = yield* evaluate(node.argument, scope)
  return node.delegate ? yield* res : yield res
}

export function* AwaitExpression(node: acorn.AwaitExpression, scope: Scope): any {
  AWAIT.RES = yield* evaluate(node.argument, scope)
  return yield AWAIT
}
/*</remove>*/

1	import { define, freeze, getGetter, getSetter, createSymbol, assign, getDptor, WINDOW } from '../share/util'
2	import { SUPER, NOCTOR, AWAIT, CLSCTOR, NEWTARGET, SUPERCALL, PRIVATE, IMPORT } from '../share/const'
3	import { pattern, createFunc, createClass } from './helper'
4	import { Variable, Prop } from '../scope/variable'
5	import { Identifier } from './identifier'
6	import { Literal } from './literal'
7	import * as acorn from 'acorn'
8	import Scope from '../scope'
9	import evaluate from '.'
10
11	export function* ThisExpression(node: acorn.ThisExpression, scope: Scope) {
12	const superCall = scope.find(SUPERCALL)	8✔
13	if (superCall && !superCall.get()) {	8!
14	throw new ReferenceError('Must call super constructor in derived class '	×
15	+ 'before accessing \'this\' or returning from derived constructor')
16	} else {
17	return scope.find('this').get()	8✔
18	}
19	}
20
21	export function* ArrayExpression(node: acorn.ArrayExpression, scope: Scope) {
22	let results: any[] = []	64✔
23	for (let i = 0; i < node.elements.length; i++) {	64✔
24	const item = node.elements[i]	152✔
25	if (item.type === 'SpreadElement') {	152✔
26	results = results.concat(yield* SpreadElement(item, scope))	×
27	} else {
28	results.push(yield* evaluate(item, scope))	152✔
29	}
30	}
31	return results	64✔
32	}
33
34	export function* ObjectExpression(node: acorn.ObjectExpression, scope: Scope) {
35	const object: { [key: string]: any } = {}	22✔
36	for (let i = 0; i < node.properties.length; i++) {	22✔
37	const property = node.properties[i]	30✔
38	if (property.type === 'SpreadElement') {	30✔
39	assign(object, yield* SpreadElement(property, scope, { spreadProps: true }))	×
40	} else {
41	let key: string
42	const propKey = property.key	30✔
43	if (property.computed) {	30✔
44	key = yield* evaluate(propKey, scope)	×
45	} else {
46	if (propKey.type === 'Identifier') {	30✔
47	key = propKey.name	24✔
48	} else {
49	key = '' + (yield* Literal(propKey as acorn.Literal, scope))	6✔
50	}
51	}
52
53	const value = yield* evaluate(property.value, scope)	30✔
54
55	const propKind = property.kind	30✔
56	if (propKind === 'init') {	30!
57	object[key] = value	30✔
58	} else if (propKind === 'get') {	×
59	const oriDptor = getDptor(object, key)	×
60	define(object, key, {	×
61	get: value,
62	set: oriDptor && oriDptor.set,	×
63	enumerable: true,
64	configurable: true
65	})
66	} else { // propKind === 'set'
67	const oriDptor = getDptor(object, key)	×
68	define(object, key, {	×
69	get: oriDptor && oriDptor.get,	×
70	set: value,
71	enumerable: true,
72	configurable: true
73	})
74	}
75	}
76	}
77	return object	22✔
78	}
79
80	export function* FunctionExpression(node: acorn.FunctionExpression, scope: Scope) {
81	if (node.id && node.id.name) {	22!
82	// it's for accessing function expression by its name inside
83	// e.g. const a = function b() { console.log(b) }
84	const tmpScope = new Scope(scope)	×
85	const func = createFunc(node, tmpScope)	×
86	tmpScope.const(node.id.name, func)	×
87	return func	×
88	} else {
89	return createFunc(node, scope)	22✔
90	}
91	}
92
93	export function* UnaryExpression(node: acorn.UnaryExpression, scope: Scope) {
94	const arg = node.argument	20✔
95	switch (node.operator) {	20✔
96	case '+': return +(yield* evaluate(arg, scope))	2✔
97	case '-': return -(yield* evaluate(arg, scope))	2✔
98	case '!': return !(yield* evaluate(arg, scope))	6✔
99	case '~': return ~(yield* evaluate(arg, scope))	2✔
100	case 'void': return void (yield* evaluate(arg, scope))	2✔
101	case 'typeof':
102	if (arg.type === 'Identifier') {	4✔
103	return typeof (yield* Identifier(arg, scope, { throwErr: false }))	2✔
104	} else {
105	return typeof (yield* evaluate(arg, scope))	2✔
106	}
107	case 'delete':
108	if (arg.type === 'MemberExpression') {	2!
109	const variable: Prop = yield* MemberExpression(arg, scope, { getVar: true })	2✔
110	return variable.del()	2✔
111	} else if (arg.type === 'Identifier') {	×
112	throw new SyntaxError('Delete of an unqualified identifier in strict mode')	×
113	} else {
114	yield* evaluate(arg, scope)	×
115	return true	×
116	}
117	/* istanbul ignore next */
118	default: throw new SyntaxError(`Unexpected token ${node.operator}`)
119	}
120	}
121
122	export function* UpdateExpression(node: acorn.UpdateExpression, scope: Scope) {
123	const arg = node.argument	6✔
124
125	let variable: Variable
126	if (arg.type === 'Identifier') {	6!
127	variable = yield* Identifier(arg, scope, { getVar: true })	6✔
128	} else if (arg.type === 'MemberExpression') {	×
129	variable = yield* MemberExpression(arg, scope, { getVar: true })	×
130	} else {
131	/* istanbul ignore next */
132	throw new SyntaxError('Unexpected token')
133	}
134
135	const value = variable.get()	6✔
136	if (node.operator === '++') {	6!
137	variable.set(value + 1)	6✔
138	return node.prefix ? variable.get() : value	6!
139	} else if (node.operator === '--') {	×
140	variable.set(value - 1)	×
141	return node.prefix ? variable.get() : value	×
142	} else {
143	/* istanbul ignore next */
144	throw new SyntaxError(`Unexpected token ${node.operator}`)
145	}
146	}
147
148	export function* BinaryExpression(node: acorn.BinaryExpression, scope: Scope) {
149	let left: any
150	let right: any
151
152	if (node.left.type === 'PrivateIdentifier') {	52!
153	left = node.left.name	×
154	right = yield* evaluate(node.right, scope)	×
155	right = right[PRIVATE] \|\| {} // compatible with checking by "#private in object"	×
156	} else {
157	left = yield* evaluate(node.left, scope)	52✔
158	right = yield* evaluate(node.right, scope)	52✔
159	}
160
161	switch (node.operator) {	52✔
162	case '==': return left == right	2✔
163	case '!=': return left != right	2✔
164	case '===': return left === right	2✔
165	case '!==': return left !== right	2✔
166	case '<': return left < right	10✔
167	case '<=': return left <= right	2✔
168	case '>': return left > right	2✔
169	case '>=': return left >= right	2✔
170	case '<<': return left << right	2✔
171	case '>>': return left >> right	2✔
172	case '>>>': return left >>> right	2✔
173	case '+': return left + right	2✔
174	case '-': return left - right	2✔
175	case '': return left right	2✔
176	case '': return left right	2✔
177	case '/': return left / right	2✔
178	case '%': return left % right	2✔
179	case '\|': return left \| right	2✔
180	case '^': return left ^ right	2✔
181	case '&': return left & right	2✔
182	case 'in': return left in right	2✔
183	case 'instanceof': return left instanceof right	2✔
184	/* istanbul ignore next */
185	default: throw new SyntaxError(`Unexpected token ${node.operator}`)
186	}
187	}
188
189	export function* AssignmentExpression(node: acorn.AssignmentExpression, scope: Scope) {
190	const left = node.left	148✔
191	let variable: Variable
192	if (left.type === 'Identifier') {	148!
193	variable = yield* Identifier(left, scope, { getVar: true, throwErr: false })	×
194	if (!variable) {	×
195	const win = scope.global().find('window').get()	×
196	variable = new Prop(win, left.name)	×
197	}
198	} else if (left.type === 'MemberExpression') {	148!
199	variable = yield* MemberExpression(left, scope, { getVar: true })	148✔
200	} else {
201	const value = yield* evaluate(node.right, scope)	×
202	return yield* pattern(left, scope, { feed: value })	×
203	}
204
205	const value = yield* evaluate(node.right, scope)	148✔
206	switch (node.operator) {	148✔
207	case '=': variable.set(value); return variable.get()	118✔
208	case '+=': variable.set(variable.get() + value); return variable.get()	2✔
209	case '-=': variable.set(variable.get() - value); return variable.get()	2✔
210	case '=': variable.set(variable.get() value); return variable.get()	2✔
211	case '/=': variable.set(variable.get() / value); return variable.get()	2✔
212	case '%=': variable.set(variable.get() % value); return variable.get()	2✔
213	case '=': variable.set(variable.get() value); return variable.get()	2✔
214	case '<<=': variable.set(variable.get() << value); return variable.get()	2✔
215	case '>>=': variable.set(variable.get() >> value); return variable.get()	2✔
216	case '>>>=': variable.set(variable.get() >>> value); return variable.get()	2✔
217	case '\|=': variable.set(variable.get() \| value); return variable.get()	2✔
218	case '^=': variable.set(variable.get() ^ value); return variable.get()	2✔
219	case '&=': variable.set(variable.get() & value); return variable.get()	2✔
220	case '??=': variable.set(variable.get() ?? value); return variable.get()	2!
221	case '&&=': variable.set(variable.get() && value); return variable.get()	2!
222	case '\|\|=': variable.set(variable.get() \|\| value); return variable.get()	2✔
223	/* istanbul ignore next */
224	default: throw new SyntaxError(`Unexpected token ${node.operator}`)
225	}
226	}
227
228	export function* LogicalExpression(node: acorn.LogicalExpression, scope: Scope) {
229	switch (node.operator) {	×
230	case '\|\|':
231	return (yield* evaluate(node.left, scope)) \|\| (yield* evaluate(node.right, scope))	×
232	case '&&':
233	return (yield* evaluate(node.left, scope)) && (yield* evaluate(node.right, scope))	×
234	case '??':
235	return (yield* evaluate(node.left, scope)) ?? (yield* evaluate(node.right, scope))	×
236	default:
237	/* istanbul ignore next */
238	throw new SyntaxError(`Unexpected token ${node.operator}`)
239	}
240	}
241
242	export interface MemberExpressionOptions {
243	getObj?: boolean
244	getVar?: boolean
245	}
246
247	export function* MemberExpression(
248	node: acorn.MemberExpression,
249	scope: Scope,
250	options: MemberExpressionOptions = {},	28✔
251	) {
252	const { getObj = false, getVar = false } = options	362✔
253
254	let object: any
255	if (node.object.type === 'Super') {	362!
256	object = yield* Super(node.object, scope, { getProto: true })	×
257	} else {
258	object = yield* evaluate(node.object, scope)	362✔
259	}
260
261	if (getObj) return object	362✔
262
263	let key: string
264	let priv: boolean = false	206✔
265
266	if (node.computed) {	206!
267	key = yield* evaluate(node.property, scope)	×
268	} else if (node.property.type === 'PrivateIdentifier') {	206!
269	key = node.property.name	×
270	priv = true	×
271	} else {
272	key = (node.property as acorn.Identifier).name	206✔
273	}
274
275	if (priv) {	206!
276	object = object[PRIVATE]	×
277	}
278
279	if (getVar) {	206✔
280	// left value
281	const setter = getSetter(object, key)	150✔
282	if (node.object.type === 'Super' && setter) {	150!
283	// transfer the setter from super to this with a private key
284	const thisObject = scope.find('this').get()	×
285	const privateKey = createSymbol(key)	×
286	define(thisObject, privateKey, { set: setter })	×
287	return new Prop(thisObject, privateKey)	×
288	} else {
289	return new Prop(object, key)	150✔
290	}
291	} else {
292	// right value
293	const getter = getGetter(object, key)	56✔
294	if (node.object.type === 'Super' && getter) {	56!
295	const thisObject = scope.find('this').get()	×
296	// if it's optional chaining, check if this ref is null or undefined, so use ==
297	if (node.optional && thisObject == null) {	×
298	return undefined	×
299	}
300	return getter.call(thisObject)	×
301	} else {
302	// if it's optional chaining, check if object is null or undefined, so use ==
303	if (node.optional && object == null) {	56!
304	return undefined	×
305	}
306	return object[key]	56✔
307	}
308	}
309	}
310
311	export function* ConditionalExpression(node: acorn.ConditionalExpression, scope: Scope) {
312	return (yield* evaluate(node.test, scope))	×
313	? (yield* evaluate(node.consequent, scope))
314	: (yield* evaluate(node.alternate, scope))
315	}
316
317	export function* CallExpression(node: acorn.CallExpression, scope: Scope) {
318	let func: any
319	let object: any
320
321	if (node.callee.type === 'MemberExpression') {	284✔
322	object = yield* MemberExpression(node.callee, scope, { getObj: true })	156✔
323
324	// if it's optional chaining, check if object is null or undefined, so use ==
325	if (node.callee.optional && object == null) {	156!
326	return undefined	×
327	}
328
329	// get key
330	let key: string
331	let priv: boolean = false	156✔
332
333	if (node.callee.computed) {	156!
334	key = yield* evaluate(node.callee.property, scope)	×
335	} else if (node.callee.property.type === 'PrivateIdentifier') {	156!
336	key = node.callee.property.name	×
337	priv = true	×
338	} else {
339	key = (node.callee.property as acorn.Identifier).name	156✔
340	}
341
342	let obj = object	156✔
343
344	if (priv) {	156!
345	obj = obj[PRIVATE]	×
346	}
347
348	// right value
349	if (node.callee.object.type === 'Super') {	156!
350	const thisObject = scope.find('this').get()	×
351	func = obj[key].bind(thisObject)	×
352	} else {
353	func = obj[key]	156✔
354	}
355
356	// if it's optional chaining, check if function is null or undefined, so use ==
357	if (node.optional && func == null) {	156!
358	return undefined	×
359	}
360
361	if (typeof func !== 'function') {	156!
362	throw new TypeError(`${key} is not a function`)	×
363	} else if (func[CLSCTOR]) {	156!
364	throw new TypeError(`Class constructor ${key} cannot be invoked without 'new'`)	×
365	}
366	} else {
367	object = scope.find('this').get()	128✔
368	func = yield* evaluate(node.callee, scope)	128✔
369
370	// if it's optional chaining, check if function is null or undefined, so use ==
371	if (node.optional && func == null) {	128!
372	return undefined	×
373	}
374
375	if (typeof func !== 'function' \|\| node.callee.type !== 'Super' && func[CLSCTOR]) {	128!
376	let name: string
377	if (node.callee.type === 'Identifier') {	×
378	name = node.callee.name	×
379	} else {
380	try {	×
381	name = JSON.stringify(func)	×
382	} catch (err) {
383	name = '' + func	×
384	}
385	}
386	if (typeof func !== 'function') {	×
387	throw new TypeError(`${name} is not a function`)	×
388	} else {
389	throw new TypeError(`Class constructor ${name} cannot be invoked without 'new'`)	×
390	}
391	}
392	}
393
394	let args: any[] = []	284✔
395	for (let i = 0; i < node.arguments.length; i++) {	284✔
396	const arg = node.arguments[i]	264✔
397	if (arg.type === 'SpreadElement') {	264!
398	args = args.concat(yield* SpreadElement(arg, scope))	×
399	} else {
400	args.push(yield* evaluate(arg, scope))	264✔
401	}
402	}
403
404	if (node.callee.type === 'Super') {	280!
405	const superCall = scope.find(SUPERCALL)	×
406	if (superCall.get()) {	×
407	throw new ReferenceError('Super constructor may only be called once')	×
408	} else {
409	scope.find(SUPERCALL).set(true)	×
410	}
411	}
412
413	try {	280✔
414	return func.apply(object, args)	280✔
415	} catch (err) {
416	if (	2!
417	err instanceof TypeError && err.message === 'Illegal invocation'	1!
418	&& func.toString().indexOf('[native code]') !== -1
419	) {
420	// you will get "TypeError: Illegal invocation" if not binding native function with window
421	const win = scope.global().find('window').get()	×
422	if (win && win[WINDOW]) {	×
423	return func.apply(win[WINDOW], args)	×
424	}
425	}
426	throw err	2✔
427	}
428	}
429
430	export function* NewExpression(node: acorn.NewExpression, scope: Scope) {
431	const constructor = yield* evaluate(node.callee, scope)	4✔
432
433	if (typeof constructor !== 'function') {	4!
434	let name: string
435	if (node.callee.type === 'Identifier') {	×
436	name = node.callee.name	×
437	} else {
438	try {	×
439	name = JSON.stringify(constructor)	×
440	} catch (err) {
441	name = '' + constructor	×
442	}
443	}
444	throw new TypeError(`${name} is not a constructor`)	×
445	} else if (constructor[NOCTOR]) {	4!
446	throw new TypeError(`${constructor.name \|\| '(intermediate value)'} is not a constructor`)	×
447	}
448
449	let args: any[] = []	4✔
450	for (let i = 0; i < node.arguments.length; i++) {	4✔
451	const arg = node.arguments[i]	2✔
452	if (arg.type === 'SpreadElement') {	2!
453	args = args.concat(yield* SpreadElement(arg, scope))	×
454	} else {
455	args.push(yield* evaluate(arg, scope))	2✔
456	}
457	}
458
459	return new constructor(...args)	4✔
460	}
461
462	export function* MetaProperty(node: acorn.MetaProperty, scope: Scope) {
463	if (node.meta.name === 'new' && node.property.name === 'target') {	×
464	return scope.find(NEWTARGET).get()	×
465	} else if (node.meta.name === 'import' && node.property.name === 'meta') {	×
466	return { url: '' }	×
467	}
468	}
469
470	export function* SequenceExpression(node: acorn.SequenceExpression, scope: Scope) {
471	let result: any
472	for (let i = 0; i < node.expressions.length; i++) {	×
473	result = yield* evaluate(node.expressions[i], scope)	×
474	}
475	return result	×
476	}
477
478	export function* ArrowFunctionExpression(node: acorn.ArrowFunctionExpression, scope: Scope) {
479	return createFunc(node, scope)	6✔
480	}
481
482	export function* TemplateLiteral(node: acorn.TemplateLiteral, scope: Scope) {
483	const quasis = node.quasis.slice()	×
484	const expressions = node.expressions.slice()	×
485
486	let result = ''	×
487	let temEl: acorn.TemplateElement
488	let expr: acorn.Expression
489
490	while (temEl = quasis.shift()) {	×
491	result += yield* TemplateElement(temEl, scope)	×
492	expr = expressions.shift()	×
493	if (expr) {	×
494	result += yield* evaluate(expr, scope)	×
495	}
496	}
497
498	return result	×
499	}
500
501	export function* TaggedTemplateExpression(node: acorn.TaggedTemplateExpression, scope: Scope) {
502	const tagFunc = yield* evaluate(node.tag, scope)	×
503
504	const quasis = node.quasi.quasis	×
505	const str = quasis.map(v => v.value.cooked)	×
506	const raw = quasis.map(v => v.value.raw)	×
507
508	define(str, 'raw', {	×
509	value: freeze(raw)
510	})
511
512	const expressions = node.quasi.expressions	×
513
514	const args = []	×
515	if (expressions) {	×
516	for (let i = 0; i < expressions.length; i++) {	×
517	args.push(yield* evaluate(expressions[i], scope))	×
518	}
519	}
520
521	return tagFunc(freeze(str), ...args)	×
522	}
523
524	export function* TemplateElement(node: acorn.TemplateElement, scope: Scope) {
525	return node.value.raw	×
526	}
527
528	export function* ClassExpression(node: acorn.ClassExpression, scope: Scope) {
529	if (node.id && node.id.name) {	×
530	// it's for accessing class expression by its name inside
531	// e.g. const a = class b { log() { console.log(b) } }
532	const tmpScope = new Scope(scope)	×
533	const klass = yield* createClass(node, tmpScope)	×
534	tmpScope.const(node.id.name, klass)	×
535	return klass	×
536	} else {
537	return yield* createClass(node, scope)	×
538	}
539	}
540
541	export interface SuperOptions {
542	getProto?: boolean
543	}
544
545	export function* Super(node: acorn.Super, scope: Scope, options: SuperOptions = {}) {	×
546	const { getProto = false } = options	×
547	const superClass = scope.find(SUPER).get()	×
548	return getProto ? superClass.prototype: superClass	×
549	}
550
551	export interface SpreadOptions {
552	spreadProps?: boolean
553	}
554
555	export function* SpreadElement(node: acorn.SpreadElement, scope: Scope, options: SpreadOptions = {}) {	×
556	const result = yield* evaluate(node.argument, scope)	×
NEW 557	if (options.spreadProps) {	×
NEW 558	return result	×
559	}
UNCOV 560	if (typeof Symbol === 'function' && typeof result[Symbol.iterator] !== 'function') {	×
UNCOV 561	throw new TypeError('Spread syntax requires ...iterable[Symbol.iterator] to be a function')	×
562	}
NEW 563	return [...result]	×
564	}
565
566	export function* ChainExpression(node: acorn.ChainExpression, scope: Scope) {
UNCOV 567	return yield* evaluate(node.expression, scope)	×
568	}
569
570	export function* ImportExpression(node: acorn.ImportExpression, scope: Scope) {
571	const globalScope = scope.global()	4✔
572
573	const source = yield* evaluate(node.source, scope)	4✔
574	const module = globalScope.find(IMPORT + source)	4✔
575	let value: any
576	if (module) {	4!
577	const result = module.get()	4✔
578	if (result) {	4!
579	if (typeof result === 'function') {	4!
580	value = result()	4✔
UNCOV 581	} else if (typeof result === 'object') {	×
UNCOV 582	value = result	×
583	}
584	}
585	}
586
587	if (!value \|\| typeof value !== 'object') {	4!
UNCOV 588	return Promise.reject(new TypeError(`Failed to resolve module specifier "${source}"`))	×
589	}
590
591	return Promise.resolve(value)	4✔
592	}
593
594	/<remove>/
595	export function* YieldExpression(node: acorn.YieldExpression, scope: Scope): any {
596	const res = yield* evaluate(node.argument, scope)	42✔
597	return node.delegate ? yield* res : yield res	40✔
598	}
599
600	export function* AwaitExpression(node: acorn.AwaitExpression, scope: Scope): any {
601	AWAIT.RES = yield* evaluate(node.argument, scope)	44✔
602	return yield AWAIT	42✔
603	}
604	/</remove>/

Siubaak / sval / 13099864828

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