vue3-yuanma/packages/compiler-core/src/compile.ts
2020-02-07 01:06:51 -05:00

101 lines
3.1 KiB
TypeScript

import { CompilerOptions } from './options'
import { baseParse } from './parse'
import { transform, NodeTransform, DirectiveTransform } from './transform'
import { generate, CodegenResult } from './codegen'
import { RootNode } from './ast'
import { isString } from '@vue/shared'
import { transformIf } from './transforms/vIf'
import { transformFor } from './transforms/vFor'
import { transformExpression } from './transforms/transformExpression'
import { transformSlotOutlet } from './transforms/transformSlotOutlet'
import { transformElement } from './transforms/transformElement'
import { transformOn } from './transforms/vOn'
import { transformBind } from './transforms/vBind'
import { trackSlotScopes, trackVForSlotScopes } from './transforms/vSlot'
import { transformText } from './transforms/transformText'
import { transformOnce } from './transforms/vOnce'
import { transformModel } from './transforms/vModel'
import { defaultOnError, createCompilerError, ErrorCodes } from './errors'
export type TransformPreset = [
NodeTransform[],
Record<string, DirectiveTransform>
]
export function getBaseTransformPreset(
prefixIdentifiers?: boolean
): TransformPreset {
return [
[
transformOnce,
transformIf,
transformFor,
...(!__BROWSER__ && prefixIdentifiers
? [
// order is important
trackVForSlotScopes,
transformExpression
]
: []),
transformSlotOutlet,
transformElement,
trackSlotScopes,
transformText
],
{
on: transformOn,
bind: transformBind,
model: transformModel
}
]
}
// we name it `baseCompile` so that higher order compilers like
// @vue/compiler-dom can export `compile` while re-exporting everything else.
export function baseCompile(
template: string | RootNode,
options: CompilerOptions = {}
): CodegenResult {
const onError = options.onError || defaultOnError
const isModuleMode = options.mode === 'module'
/* istanbul ignore if */
if (__BROWSER__) {
if (options.prefixIdentifiers === true) {
onError(createCompilerError(ErrorCodes.X_PREFIX_ID_NOT_SUPPORTED))
} else if (isModuleMode) {
onError(createCompilerError(ErrorCodes.X_MODULE_MODE_NOT_SUPPORTED))
}
}
const prefixIdentifiers =
!__BROWSER__ && (options.prefixIdentifiers === true || isModuleMode)
if (!prefixIdentifiers && options.cacheHandlers) {
onError(createCompilerError(ErrorCodes.X_CACHE_HANDLER_NOT_SUPPORTED))
}
if (options.scopeId && !isModuleMode) {
onError(createCompilerError(ErrorCodes.X_SCOPE_ID_NOT_SUPPORTED))
}
const ast = isString(template) ? baseParse(template, options) : template
const [nodeTransforms, directiveTransforms] = getBaseTransformPreset(
prefixIdentifiers
)
transform(ast, {
...options,
prefixIdentifiers,
nodeTransforms: [
...nodeTransforms,
...(options.nodeTransforms || []) // user transforms
],
directiveTransforms: {
...directiveTransforms,
...(options.directiveTransforms || {}) // user transforms
}
})
return generate(ast, {
...options,
prefixIdentifiers
})
}