1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
import { Type } from 'ts-morph'
import { promises as fs } from 'fs'
import readline from 'readline'
import { match } from './util'
import { Ctx } from './types'
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
terminal: false,
})
export const cleanup = () => {
rl.close()
}
const readLineFromStdin = (): Promise<string> =>
new Promise((res) => rl.on('line', res))
export const evaluateType = async (
ctx: Ctx,
effTyp: Type
): Promise<string[]> => {
const name = effTyp.getSymbol()?.getName()
const args = effTyp.getTypeArguments()
return match(name, {
DefineEffect: async () => {
const [nameTyp, exprTyp] = args
const name = nameTyp?.getLiteralValue() as string
const exprStr = exprTyp?.getLiteralValue() as string
ctx.addCustomEffect(name, exprStr)
return []
},
Pure: async () => {
const [valTyp] = args
const [resultKey, _] = ctx.createResult(ctx.typeToString(valTyp))
return [resultKey]
},
Print: async () => {
console.log(...args.map(ctx.typeToString))
return []
},
PutString: async () => {
const [strinTyp] = args
const typString = ctx.getTypeValue(strinTyp) ?? ctx.typeToString(strinTyp)
process.stdout.write(typString)
return []
},
Debug: async () => {
const [labelTyp, valueTyp] = args
const label = ctx.getTypeValue(labelTyp)
const value = ctx.typeToString(valueTyp)
console.log(label, value)
const [resultKey, _] = ctx.createResult(JSON.stringify(value))
return [resultKey]
},
ReadFile: async () => {
const [pathTyp] = args
const filePath = ctx.getTypeValue(pathTyp)
const contents = await fs.readFile(filePath, 'utf-8')
const [resultKey, _] = ctx.createResult(JSON.stringify(contents))
return [resultKey]
},
WriteFile: async () => {
const [pathTyp, contentsTyp] = args
const filePath = ctx.getTypeValue(pathTyp)
const contents = ctx.getTypeValue(contentsTyp)
await fs.writeFile(filePath, contents)
return []
},
Bind: async () => {
const [inputTyp, chainToKind] = args
const [resultKey] = inputTyp ? await evaluateType(ctx, inputTyp) : []
// TODO: Handle resultKey undefined case
const [_, compNode] = ctx.createResult(
`(${ctx.typeToString(chainToKind)} & { input: (${ctx.getResultExpr(
resultKey
)})['output'] })['return']`
)
// TODO: Avoid using getTypeAtLocation?
const compTyp = compNode
?.getType()
.getProperty('output')
?.getTypeAtLocation(ctx.entryPoint)
return compTyp ? await evaluateType(ctx, compTyp) : []
},
GetEnv: async () => {
const [envTyp] = args
const envName = ctx.getTypeValue(envTyp)
const [resultKey, _] = ctx.createResult(
`${JSON.stringify(process.env[envName] ?? '')}`
)
return [resultKey]
},
GetArgs: async () => {
const [resultKey, _] = ctx.createResult(
`${JSON.stringify(process.argv.slice(2))}`
)
return [resultKey]
},
ReadLine: async () => {
const line = await readLineFromStdin()
const [resultKey, _] = ctx.createResult(`${JSON.stringify(line)}`)
return [resultKey]
},
JsExpr: async () => {
const [exprTyp] = args
const exprStr = ctx.getTypeValue(exprTyp)
const result = eval(`JSON.stringify(${exprStr})`)
const [resultKey, _] = ctx.createResult(`${result}`)
return [resultKey]
},
Seq: async () => {
const [effectTyps] = args
const effectResults = await evalList(
ctx,
effectTyps?.getTupleElements() ?? []
)
const [resultKey, _] = ctx.createResult(`[
${effectResults.map(ctx.getResultExpr).join(', ')}
]`)
return [resultKey]
},
Do: async () => {
const [effectTyps] = args
const effectResults = await evalList(
ctx,
effectTyps?.getTupleElements() ?? []
)
// TODO: Use last type's result instead of last result key
const lastResKey = effectResults[effectResults.length - 1]
const [resultKey, _] = ctx.createResult(
`(${ctx.getResultExpr(lastResKey)})['output']`
)
return [resultKey]
},
_: async () => {
if (name && ctx.hasCustomEffect(name)) {
return ctx.runCustomEffect(name, args)
}
console.log(`${name} effect is not handled`)
console.log(ctx.typeToString(effTyp))
// TODO: Maybe throw?
return []
},
})
}
export const evalList = async (ctx: Ctx, effectTyps: Type[]) => {
const effectResults: string[] = []
for (const item of effectTyps ?? []) {
effectResults.push(...(await evaluateType(ctx, item)))
}
return effectResults
}
|
