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fix(compiler-core): hoist pure annotations should apply to all nested calls

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This commit is contained in:
Evan You 2020-05-01 18:36:34 -04:00
parent cad25d95a3
commit c5e7d8b532
4 changed files with 56 additions and 46 deletions
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10
packages/compiler-core/__tests__/transforms/__snapshots__/hoistStatic.spec.ts.snap
View File

@ -22,8 +22,8 @@ exports[`compiler: hoistStatic transform hoist nested static tree 1`] = `
const { createVNode: _createVNode } = _Vue
const _hoisted_1 = /*#__PURE__*/_createVNode(\\"p\\", null, [
_createVNode(\\"span\\"),
_createVNode(\\"span\\")
/*#__PURE__*/_createVNode(\\"span\\"),
/*#__PURE__*/_createVNode(\\"span\\")
], -1 /* HOISTED */)
return function render(_ctx, _cache) {
@ -42,7 +42,7 @@ exports[`compiler: hoistStatic transform hoist nested static tree with comments
const { createVNode: _createVNode, createCommentVNode: _createCommentVNode } = _Vue
const _hoisted_1 = /*#__PURE__*/_createVNode(\\"div\\", null, [
_createCommentVNode(\\"comment\\")
/*#__PURE__*/_createCommentVNode(\\"comment\\")
], -1 /* HOISTED */)
return function render(_ctx, _cache) {
@ -172,7 +172,7 @@ exports[`compiler: hoistStatic transform prefixIdentifiers hoist nested static t
"const _Vue = Vue
const { createVNode: _createVNode } = _Vue
const _hoisted_1 = /*#__PURE__*/ _createVNode(\\"span\\", null, \\"foo \\" + _toDisplayString(1) + \\" \\" + _toDisplayString(true), -1 /* HOISTED */)
const _hoisted_1 = /*#__PURE__*/_createVNode(\\"span\\", null, \\"foo \\" + /*#__PURE__*/_toDisplayString(1) + \\" \\" + /*#__PURE__*/_toDisplayString(true), -1 /* HOISTED */)
return function render(_ctx, _cache) {
with (_ctx) {
@ -189,7 +189,7 @@ exports[`compiler: hoistStatic transform prefixIdentifiers hoist nested static t
"const _Vue = Vue
const { createVNode: _createVNode } = _Vue
const _hoisted_1 = /*#__PURE__*/ _createVNode(\\"span\\", { foo: 0 }, _toDisplayString(1), -1 /* HOISTED */)
const _hoisted_1 = /*#__PURE__*/_createVNode(\\"span\\", { foo: 0 }, /*#__PURE__*/_toDisplayString(1), -1 /* HOISTED */)
return function render(_ctx, _cache) {
with (_ctx) {

44
packages/compiler-core/src/codegen.ts
View File

@ -54,6 +54,8 @@ import {
} from './runtimeHelpers'
import { ImportItem } from './transform'
const PURE_ANNOTATION = `/*#__PURE__*/`
type CodegenNode = TemplateChildNode | JSChildNode | SSRCodegenNode
export interface CodegenResult {
@ -69,6 +71,7 @@ export interface CodegenContext extends Required<CodegenOptions> {
column: number
offset: number
indentLevel: number
pure: boolean
map?: SourceMapGenerator
helper(key: symbol): string
push(code: string, node?: CodegenNode): void
@ -107,6 +110,7 @@ function createCodegenContext(
line: 1,
offset: 0,
indentLevel: 0,
pure: false,
map: undefined,
helper(key) {
return `_${helperNameMap[key]}`
@ -201,7 +205,7 @@ export function generate(
// enter render function
if (genScopeId && !ssr) {
push(`const render = /*#__PURE__*/ _withId(`)
push(`const render = ${PURE_ANNOTATION}_withId(`)
}
if (!ssr) {
push(`function render(_ctx, _cache) {`)
@ -400,7 +404,9 @@ function genModulePreamble(
}
if (genScopeId) {
push(`const _withId = /*#__PURE__*/ ${helper(WITH_SCOPE_ID)}("${scopeId}")`)
push(
`const _withId = ${PURE_ANNOTATION}${helper(WITH_SCOPE_ID)}("${scopeId}")`
)
newline()
}
@ -432,6 +438,7 @@ function genHoists(hoists: JSChildNode[], context: CodegenContext) {
if (!hoists.length) {
return
}
context.pure = true
const { push, newline, helper, scopeId, mode } = context
const genScopeId = !__BROWSER__ && scopeId != null && mode !== 'function'
newline()
@ -445,13 +452,6 @@ function genHoists(hoists: JSChildNode[], context: CodegenContext) {
hoists.forEach((exp, i) => {
push(`const _hoisted_${i + 1} = `)
// make hosit function calls tree-shakable
if (
exp.type === NodeTypes.VNODE_CALL ||
exp.type === NodeTypes.JS_CALL_EXPRESSION
) {
push(`/*#__PURE__*/ `)
}
genNode(exp, context)
newline()
})
@ -460,6 +460,7 @@ function genHoists(hoists: JSChildNode[], context: CodegenContext) {
push(`${helper(POP_SCOPE_ID)}()`)
newline()
}
context.pure = false
}
function genImports(importsOptions: ImportItem[], context: CodegenContext) {
@ -634,7 +635,8 @@ function genExpression(node: SimpleExpressionNode, context: CodegenContext) {
}
function genInterpolation(node: InterpolationNode, context: CodegenContext) {
const { push, helper } = context
const { push, helper, pure } = context
if (pure) push(PURE_ANNOTATION)
push(`${helper(TO_DISPLAY_STRING)}(`)
genNode(node.content, context)
push(`)`)
@ -676,13 +678,16 @@ function genExpressionAsPropertyKey(
function genComment(node: CommentNode, context: CodegenContext) {
if (__DEV__) {
const { push, helper } = context
const { push, helper, pure } = context
if (pure) {
push(PURE_ANNOTATION)
}
push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node)
}
}
function genVNodeCall(node: VNodeCall, context: CodegenContext) {
const { push, helper } = context
const { push, helper, pure } = context
const {
tag,
props,
@ -699,6 +704,9 @@ function genVNodeCall(node: VNodeCall, context: CodegenContext) {
if (isBlock) {
push(`(${helper(OPEN_BLOCK)}(${isForBlock ? `true` : ``}), `)
}
if (pure) {
push(PURE_ANNOTATION)
}
push(helper(isBlock ? CREATE_BLOCK : CREATE_VNODE) + `(`, node)
genNodeList(
genNullableArgs([tag, props, children, patchFlag, dynamicProps]),
@ -725,12 +733,14 @@ function genNullableArgs(args: any[]): CallExpression['arguments'] {
// JavaScript
function genCallExpression(node: CallExpression, context: CodegenContext) {
const callee = isString(node.callee)
? node.callee
: context.helper(node.callee)
context.push(callee + `(`, node)
const { push, helper, pure } = context
const callee = isString(node.callee) ? node.callee : helper(node.callee)
if (pure) {
push(PURE_ANNOTATION)
}
push(callee + `(`, node)
genNodeList(node.arguments, context)
context.push(`)`)
push(`)`)
}
function genObjectExpression(node: ObjectExpression, context: CodegenContext) {