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101 lines
4.1 KiB
101 lines
4.1 KiB
3 years ago
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import type AjvCore from "../core"
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import type {AnyValidateFunction, SourceCode} from "../types"
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import type {SchemaEnv} from "../compile"
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import {UsedScopeValues, UsedValueState, ValueScopeName, varKinds} from "../compile/codegen/scope"
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import {_, nil, _Code, Code, getProperty, getEsmExportName} from "../compile/codegen/code"
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function standaloneCode(
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ajv: AjvCore,
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refsOrFunc?: {[K in string]?: string} | AnyValidateFunction
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): string {
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if (!ajv.opts.code.source) {
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throw new Error("moduleCode: ajv instance must have code.source option")
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}
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const {_n} = ajv.scope.opts
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return typeof refsOrFunc == "function"
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? funcExportCode(refsOrFunc.source)
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: refsOrFunc !== undefined
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? multiExportsCode<string>(refsOrFunc, getValidate)
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: multiExportsCode<SchemaEnv>(ajv.schemas, (sch) =>
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sch.meta ? undefined : ajv.compile(sch.schema)
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)
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function getValidate(id: string): AnyValidateFunction {
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const v = ajv.getSchema(id)
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if (!v) throw new Error(`moduleCode: no schema with id ${id}`)
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return v
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}
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function funcExportCode(source?: SourceCode): string {
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const usedValues: UsedScopeValues = {}
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const n = source?.validateName
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const vCode = validateCode(usedValues, source)
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if (ajv.opts.code.esm) {
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// Always do named export as `validate` rather than the variable `n` which is `validateXX` for known export value
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return `"use strict";${_n}export const validate = ${n};${_n}export default ${n};${_n}${vCode}`
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}
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return `"use strict";${_n}module.exports = ${n};${_n}module.exports.default = ${n};${_n}${vCode}`
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}
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function multiExportsCode<T extends SchemaEnv | string>(
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schemas: {[K in string]?: T},
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getValidateFunc: (schOrId: T) => AnyValidateFunction | undefined
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): string {
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const usedValues: UsedScopeValues = {}
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let code = _`"use strict";`
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for (const name in schemas) {
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const v = getValidateFunc(schemas[name] as T)
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if (v) {
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const vCode = validateCode(usedValues, v.source)
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const exportSyntax = ajv.opts.code.esm
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? _`export const ${getEsmExportName(name)}`
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: _`exports${getProperty(name)}`
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code = _`${code}${_n}${exportSyntax} = ${v.source?.validateName};${_n}${vCode}`
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}
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}
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return `${code}`
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}
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function validateCode(usedValues: UsedScopeValues, s?: SourceCode): Code {
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if (!s) throw new Error('moduleCode: function does not have "source" property')
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if (usedState(s.validateName) === UsedValueState.Completed) return nil
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setUsedState(s.validateName, UsedValueState.Started)
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const scopeCode = ajv.scope.scopeCode(s.scopeValues, usedValues, refValidateCode)
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const code = new _Code(`${scopeCode}${_n}${s.validateCode}`)
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return s.evaluated ? _`${code}${s.validateName}.evaluated = ${s.evaluated};${_n}` : code
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function refValidateCode(n: ValueScopeName): Code | undefined {
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const vRef = n.value?.ref
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if (n.prefix === "validate" && typeof vRef == "function") {
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const v = vRef as AnyValidateFunction
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return validateCode(usedValues, v.source)
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} else if ((n.prefix === "root" || n.prefix === "wrapper") && typeof vRef == "object") {
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const {validate, validateName} = vRef as SchemaEnv
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if (!validateName) throw new Error("ajv internal error")
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const def = ajv.opts.code.es5 ? varKinds.var : varKinds.const
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const wrapper = _`${def} ${n} = {validate: ${validateName}};`
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if (usedState(validateName) === UsedValueState.Started) return wrapper
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const vCode = validateCode(usedValues, validate?.source)
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return _`${wrapper}${_n}${vCode}`
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}
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return undefined
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}
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function usedState(name: ValueScopeName): UsedValueState | undefined {
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return usedValues[name.prefix]?.get(name)
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}
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function setUsedState(name: ValueScopeName, state: UsedValueState): void {
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const {prefix} = name
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const names = (usedValues[prefix] = usedValues[prefix] || new Map())
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names.set(name, state)
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}
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}
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}
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module.exports = exports = standaloneCode
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Object.defineProperty(exports, "__esModule", {value: true})
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export default standaloneCode
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