4496546924

Build Type

push

github

Committed by GitHub

Commit Message

Add Full TypeScript Chapter (#1376)

Run Details

3262 of 4252 branches covered (76.72%)

Branch coverage included in aggregate %.

60 of 60 new or added lines in 8 files covered. (100.0%)

10198 of 11836 relevant lines covered (86.16%)

130702.18 hits per line

Source File
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88.89

/src/parser/parser.ts

import { Program } from 'estree'

import { Context } from '..'
import { Chapter, Variant } from '../types'
import { FullJSParser } from './fullJS'
import { FullTSParser } from './fullTS'
import { SourceParser } from './source'
import { SourceTypedParser } from './source/typed'
import { AcornOptions, Parser } from './types'

export function parse<TOptions extends AcornOptions>(
  programStr: string,
  context: Context,
  options?: Partial<TOptions>,
  throwOnError?: boolean
): Program | null {
  let parser: Parser<TOptions>
  switch (context.chapter) {
    case Chapter.FULL_JS:
      parser = new FullJSParser()
      break
    case Chapter.FULL_TS:
      parser = new FullTSParser()
      break
    default:
      switch (context.variant) {
        case Variant.TYPED:
          parser = new SourceTypedParser(context.chapter, context.variant)
          break
        default:
          parser = new SourceParser(context.chapter, context.variant)
      }
  }

  const ast: Program | null = parser.parse(programStr, context, options, throwOnError)
  const validAst: boolean = !!ast && parser.validate(ast, context, throwOnError)

  return validAst ? ast : null
}

1	import { Program } from 'estree'
2
3	import { Context } from '..'
4	import { Chapter, Variant } from '../types'	61✔
5	import { FullJSParser } from './fullJS'	61✔
6	import { FullTSParser } from './fullTS'	61✔
7	import { SourceParser } from './source'	61✔
8	import { SourceTypedParser } from './source/typed'	61✔
9	import { AcornOptions, Parser } from './types'
10
11	export function parse<TOptions extends AcornOptions>(	61✔
12	programStr: string,
13	context: Context,
14	options?: Partial<TOptions>,
15	throwOnError?: boolean
16	): Program \| null {
17	let parser: Parser<TOptions>
18	switch (context.chapter) {	4,204✔
19	case Chapter.FULL_JS:	4,204!
20	parser = new FullJSParser()	22✔
21	break	22✔
22	case Chapter.FULL_TS:
23	parser = new FullTSParser()	×
24	break	×
25	default:
26	switch (context.variant) {	4,182✔
27	case Variant.TYPED:	4,182✔
28	parser = new SourceTypedParser(context.chapter, context.variant)	92✔
29	break	92✔
30	default:
31	parser = new SourceParser(context.chapter, context.variant)	4,090✔
32	}
33	}
34
35	const ast: Program \| null = parser.parse(programStr, context, options, throwOnError)	4,204✔
36	const validAst: boolean = !!ast && parser.validate(ast, context, throwOnError)	4,204✔
37
38	return validAst ? ast : null	4,204✔
39	}

source-academy / js-slang / 4496546924

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