15237418122

Committed 25 May 2025 11:31AM UTC coverage: 77.048% (-3.5%) from 80.538%

Build # 15237418122

Build Type

push

github

Committed by

web-flow

Commit Message

Rewrite: Stepper (#1742)

Run Details

3433 of 4826 branches covered (71.14%)

Branch coverage included in aggregate %.

1032 of 1260 new or added lines in 27 files covered. (81.9%)

440 existing lines in 29 files now uncovered.

10099 of 12737 relevant lines covered (79.29%)

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89.58

/src/runner/fullJSRunner.ts

/* eslint-disable @typescript-eslint/no-unused-vars */
import { generate } from 'astring'
import type es from 'estree'
import { RawSourceMap } from 'source-map'

import { NATIVE_STORAGE_ID } from '../constants'
import { RuntimeSourceError } from '../errors/runtimeSourceError'
import { parse } from '../parser/parser'
import {
  evallerReplacer,
  getBuiltins,
  getGloballyDeclaredIdentifiers,
  transpile
} from '../transpiler/transpiler'
import type { Context, NativeStorage } from '../types'
import * as create from '../utils/ast/astCreator'
import { getFunctionDeclarationNamesInProgram } from '../utils/uniqueIds'
import { toSourceError } from './errors'
import { resolvedErrorPromise } from './utils'
import type { Runner } from './types'

function fullJSEval(code: string, nativeStorage: NativeStorage): any {
  if (nativeStorage.evaller) {
    return nativeStorage.evaller(code)
  } else {
    return eval(code)
  }
}

function preparePrelude(context: Context): es.Statement[] | undefined {
  if (context.prelude === null) {
    return []
  }
  const prelude = context.prelude
  context.prelude = null
  const program = parse(prelude, context)
  if (program === null) {
    return undefined
  }

  return program.body as es.Statement[]
}

function containsPrevEval(context: Context): boolean {
  return context.nativeStorage.evaller != null
}

const fullJSRunner: Runner = async (program, context) => {
  // prelude & builtins
  // only process builtins and preludes if it is a fresh eval context
  const prelude = preparePrelude(context)
  if (prelude === undefined) {
    return resolvedErrorPromise
  }
  const preludeAndBuiltins: es.Statement[] = containsPrevEval(context)
    ? []
    : [...getBuiltins(context.nativeStorage), ...prelude]

  // evaluate and create a separate block for preludes and builtins
  const preEvalProgram: es.Program = create.program([
    ...preludeAndBuiltins,
    evallerReplacer(create.identifier(NATIVE_STORAGE_ID), new Set())
  ])
  getFunctionDeclarationNamesInProgram(preEvalProgram).forEach(id =>
    context.nativeStorage.previousProgramsIdentifiers.add(id)
  )
  getGloballyDeclaredIdentifiers(preEvalProgram).forEach(id =>
    context.nativeStorage.previousProgramsIdentifiers.add(id)
  )
  const preEvalCode: string = generate(preEvalProgram)
  fullJSEval(preEvalCode, context.nativeStorage)

  let transpiled
  let sourceMapJson: RawSourceMap | undefined
  try {
    ;({ transpiled, sourceMapJson } = transpile(program, context))
    return {
      status: 'finished',
      context,
      value: fullJSEval(transpiled, context.nativeStorage)
    }
  } catch (error) {
    context.errors.push(
      error instanceof RuntimeSourceError ? error : await toSourceError(error, sourceMapJson)
    )
    return resolvedErrorPromise
  }
}

export default fullJSRunner

1	/* eslint-disable @typescript-eslint/no-unused-vars */
2	import { generate } from 'astring'	59✔
3	import type es from 'estree'
4	import { RawSourceMap } from 'source-map'
5
6	import { NATIVE_STORAGE_ID } from '../constants'	59✔
7	import { RuntimeSourceError } from '../errors/runtimeSourceError'	59✔
8	import { parse } from '../parser/parser'	59✔
9	import {	59✔
10	evallerReplacer,
11	getBuiltins,
12	getGloballyDeclaredIdentifiers,
13	transpile
14	} from '../transpiler/transpiler'
15	import type { Context, NativeStorage } from '../types'
16	import * as create from '../utils/ast/astCreator'	59✔
17	import { getFunctionDeclarationNamesInProgram } from '../utils/uniqueIds'	59✔
18	import { toSourceError } from './errors'	59✔
19	import { resolvedErrorPromise } from './utils'	59✔
20	import type { Runner } from './types'
21
22	function fullJSEval(code: string, nativeStorage: NativeStorage): any {
23	if (nativeStorage.evaller) {	94✔
24	return nativeStorage.evaller(code)	50✔
25	} else {
26	return eval(code)	44✔
27	}
28	}
29
30	function preparePrelude(context: Context): es.Statement[] \| undefined {
31	if (context.prelude === null) {	47✔
32	return []	31✔
33	}
34	const prelude = context.prelude	16✔
35	context.prelude = null	16✔
36	const program = parse(prelude, context)	16✔
37	if (program === null) {	16!
UNCOV 38	return undefined	×
39	}
40
41	return program.body as es.Statement[]	16✔
42	}
43
44	function containsPrevEval(context: Context): boolean {
45	return context.nativeStorage.evaller != null	47✔
46	}
47
48	const fullJSRunner: Runner = async (program, context) => {	59✔
49	// prelude & builtins
50	// only process builtins and preludes if it is a fresh eval context
51	const prelude = preparePrelude(context)	47✔
52	if (prelude === undefined) {	47!
UNCOV 53	return resolvedErrorPromise	×
54	}
55	const preludeAndBuiltins: es.Statement[] = containsPrevEval(context)	47✔
56	? []
57	: [...getBuiltins(context.nativeStorage), ...prelude]
58
59	// evaluate and create a separate block for preludes and builtins
60	const preEvalProgram: es.Program = create.program([	47✔
61	...preludeAndBuiltins,
62	evallerReplacer(create.identifier(NATIVE_STORAGE_ID), new Set())
63	])
64	getFunctionDeclarationNamesInProgram(preEvalProgram).forEach(id =>	47✔
65	context.nativeStorage.previousProgramsIdentifiers.add(id)	763✔
66	)
67	getGloballyDeclaredIdentifiers(preEvalProgram).forEach(id =>	47✔
68	context.nativeStorage.previousProgramsIdentifiers.add(id)	3,023✔
69	)
70	const preEvalCode: string = generate(preEvalProgram)	47✔
71	fullJSEval(preEvalCode, context.nativeStorage)	47✔
72
73	let transpiled
74	let sourceMapJson: RawSourceMap \| undefined
75	try {	47✔
76	;({ transpiled, sourceMapJson } = transpile(program, context))	47✔
77	return {	47✔
78	status: 'finished',
79	context,
80	value: fullJSEval(transpiled, context.nativeStorage)
81	}
82	} catch (error) {
83	context.errors.push(	7✔
84	error instanceof RuntimeSourceError ? error : await toSourceError(error, sourceMapJson)	7!
85	)
86	return resolvedErrorPromise	7✔
87	}
88	}
89
90	export default fullJSRunner	59✔

source-academy / js-slang / 15237418122

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