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import type { SFCDescriptor } from '../parse'
import { generateCodeFrame, isArray } from '@vue/shared'
import { type ParserPlugin, parse as babelParse } from '@babel/parser'
import type { ImportBinding, SFCScriptCompileOptions } from '../compileScript'
import type { PropsDestructureBindings } from './defineProps'
import type { ModelDecl } from './defineModel'
import type { BindingMetadata } from '../../../compiler-core/src'
import MagicString from 'magic-string'
import type { TypeScope } from './resolveType'
import { warn } from '../warn'
export class ScriptCompileContext {
isJS: boolean
isTS: boolean
isCE = false
scriptAst: Program | null
scriptSetupAst: Program | null
source: string = this.descriptor.source
filename: string = this.descriptor.filename
s: MagicString = new MagicString(this.source)
startOffset: number | undefined =
this.descriptor.scriptSetup?.loc.start.offset
endOffset: number | undefined = this.descriptor.scriptSetup?.loc.end.offset
// import / type analysis
scope?: TypeScope
globalScopes?: TypeScope[]
userImports: Record<string, ImportBinding> = Object.create(null)
// macros presence check
hasDefinePropsCall = false
hasDefineEmitCall = false
hasDefineExposeCall = false
hasDefaultExportName = false
hasDefaultExportRender = false
hasDefineOptionsCall = false
hasDefineSlotsCall = false
hasDefineModelCall = false
// defineProps
propsCall: CallExpression | undefined
propsDecl: Node | undefined
propsRuntimeDecl: Node | undefined
propsTypeDecl: Node | undefined
propsDestructureDecl: ObjectPattern | undefined
propsDestructuredBindings: PropsDestructureBindings = Object.create(null)
propsDestructureRestId: string | undefined
propsRuntimeDefaults: Node | undefined
// defineEmits
emitsRuntimeDecl: Node | undefined
emitsTypeDecl: Node | undefined
emitDecl: Node | undefined
// defineModel
modelDecls: Record<string, ModelDecl> = Object.create(null)
// defineOptions
optionsRuntimeDecl: Node | undefined
// codegen
bindingMetadata: BindingMetadata = {}
helperImports: Set<string> = new Set()
helper(key: string): string {
this.helperImports.add(key)
return `_${key}`
}
/**
* to be exposed on compiled script block for HMR cache busting
*/
deps?: Set<string>
/**
* cache for resolved fs
*/
fs?: NonNullable<SFCScriptCompileOptions['fs']>
constructor(
public descriptor: SFCDescriptor,
public options: Partial<SFCScriptCompileOptions>,
) {
const { script, scriptSetup } = descriptor
const scriptLang = script && script.lang
const scriptSetupLang = scriptSetup && scriptSetup.lang
this.isJS =
scriptLang === 'js' ||
scriptLang === 'jsx' ||
scriptSetupLang === 'js' ||
scriptSetupLang === 'jsx'
this.isTS =
scriptLang === 'ts' ||
scriptLang === 'tsx' ||
scriptSetupLang === 'ts' ||
scriptSetupLang === 'tsx'
const customElement = options.customElement
const filename = this.descriptor.filename
if (customElement) {
this.isCE =
typeof customElement === 'boolean'
? customElement
: customElement(filename)
}
// resolve parser plugins
const plugins: ParserPlugin[] = resolveParserPlugins(
(scriptLang || scriptSetupLang)!,
options.babelParserPlugins,
)
function parse(input: string, offset: number): Program {
try {
return babelParse(input, {
plugins,
sourceType: 'module',
}).program
} catch (e: any) {
e.message = `[vue/compiler-sfc] ${e.message}\n\n${
descriptor.filename
}\n${generateCodeFrame(
descriptor.source,
e.pos + offset,
e.pos + offset + 1,
)}`
throw e
}
}
this.scriptAst =
descriptor.script &&
parse(descriptor.script.content, descriptor.script.loc.start.offset)
this.scriptSetupAst =
descriptor.scriptSetup &&
parse(descriptor.scriptSetup!.content, this.startOffset!)
}
getString(node: Node, scriptSetup = true): string {
const block = scriptSetup
? this.descriptor.scriptSetup!
: this.descriptor.script!
return block.content.slice(node.start!, node.end!)
}
warn(msg: string, node: Node, scope?: TypeScope): void {
warn(generateError(msg, node, this, scope))
}
error(msg: string, node: Node, scope?: TypeScope): never {
throw new Error(
`[@vue/compiler-sfc] ${generateError(msg, node, this, scope)}`,
)
}
}
function generateError(
msg: string,
node: Node,
ctx: ScriptCompileContext,
scope?: TypeScope,
) {
const offset = scope ? scope.offset : ctx.startOffset!
return `${msg}\n\n${(scope || ctx.descriptor).filename}\n${generateCodeFrame(
(scope || ctx.descriptor).source,
node.start! + offset,
node.end! + offset,
)}`
}
export function resolveParserPlugins(
lang: string,
userPlugins?: ParserPlugin[],
dts = false,
): ParserPlugin[] {
const plugins: ParserPlugin[] = []
if (
!userPlugins ||
!userPlugins.some(
p =>
p === 'importAssertions' ||
p === 'importAttributes' ||
(isArray(p) && p[0] === 'importAttributes'),
)
) {
plugins.push('importAttributes')
}
if (lang === 'jsx' || lang === 'tsx' || lang === 'mtsx') {
plugins.push('jsx')
} else if (userPlugins) {
// If don't match the case of adding jsx
// should remove the jsx from user options
userPlugins = userPlugins.filter(p => p !== 'jsx')
}
if (lang === 'ts' || lang === 'mts' || lang === 'tsx' || lang === 'mtsx') {
plugins.push(['typescript', { dts }], 'explicitResourceManagement')
if (!userPlugins || !userPlugins.includes('decorators')) {
plugins.push('decorators-legacy')
}
}
if (userPlugins) {
plugins.push(...userPlugins)
}
return plugins
}
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