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index.ts
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index.ts
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import { FileForRunNotExistError } from './error/prepare.ts'
import { Evaluable, ValueTypes } from './node/base.ts'
import { tokenize } from './prepare/tokenize/index.ts'
import { ErrorInModuleError } from './error/index.ts'
import { printError } from './error/printError.ts'
import { parse } from './prepare/parse/index.ts'
import { YaksokError } from './error/common.ts'
import { Rule } from './prepare/parse/rule.ts'
import { Block, Node } from './node/index.ts'
import { Scope } from './runtime/scope.ts'
import { run } from './runtime/run.ts'
import { Params } from './node/function.ts'
interface YaksokConfig {
stdout: (message: string) => void
stderr: (message: string) => void
entryPoint: string
runFFI: (runtime: string, code: string, args: Params) => ValueTypes
}
const defaultConfig: YaksokConfig = {
stdout: console.log,
stderr: console.error,
entryPoint: 'main',
runFFI: (runtime: string) => {
throw new Error(`FFI ${runtime} not implemented`)
},
}
export class CodeRunner {
functionDeclaration: Node[][] = []
scope: Scope
ast: Block
exports: Rule[] = []
constructor(
private code: string,
private runtime: Yaksok,
private fileName: string,
) {
this.scope = new Scope({
runtime: this.runtime,
})
try {
const parseResult = parse(tokenize(code), this.runtime)
this.ast = parseResult.ast
this.exports = parseResult.dynamicRules
} catch (error) {
if (error instanceof YaksokError) {
this.runtime.stderr(
printError({
code: this.code,
runtime: this,
error,
}),
)
}
throw error
}
}
run() {
try {
return run(this.ast, this.scope)
} catch (error) {
if (error instanceof YaksokError) {
this.runtime.stderr(
printError({
code: this.code,
runtime: this,
error,
}),
)
}
throw error
}
}
evaluateFromExtern(node: Evaluable) {
try {
return run(node, this.scope)
} catch (error) {
if (error instanceof YaksokError) {
this.runtime.stderr(
printError({
code: this.code,
runtime: this,
error,
}),
)
}
throw new ErrorInModuleError({
resource: {
fileName: this.fileName,
},
position: node.position,
})
}
}
}
export class Yaksok implements YaksokConfig {
stdout: YaksokConfig['stdout']
stderr: YaksokConfig['stderr']
entryPoint: YaksokConfig['entryPoint']
runFFI: YaksokConfig['runFFI']
runners: Record<string, CodeRunner> = {}
ran: Record<string, boolean> = {}
constructor(
public files: Record<string, string>,
config: Partial<YaksokConfig>,
) {
this.stdout = config.stdout || defaultConfig.stdout
this.stderr = config.stderr || defaultConfig.stderr
this.entryPoint = config.entryPoint || defaultConfig.entryPoint
this.runFFI = config.runFFI || defaultConfig.runFFI
}
getRunner(fileName = this.entryPoint) {
if (!(fileName in this.files)) {
throw new FileForRunNotExistError({
resource: {
entryPoint: this.entryPoint,
files: Object.keys(this.files),
},
})
}
if (fileName in this.runners) {
return this.runners[fileName]
}
this.runners[fileName] = new CodeRunner(
this.files[fileName],
this,
fileName,
)
return this.runners[fileName]
}
run(fileName = this.entryPoint) {
const runner = this.getRunner(fileName)
return runner.run()
}
runOnce(fileName = this.entryPoint) {
const runner = this.getRunner(fileName)
if (!(fileName in this.ran)) runner.run()
return runner
}
}
export function yaksok(
code: string | Record<string, string>,
config: Partial<YaksokConfig> = {},
) {
const yaksok = new Yaksok(
typeof code === 'string'
? {
[defaultConfig.entryPoint]: code,
}
: code,
config,
)
yaksok.run()
return yaksok
}