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1690x 1435x 12822x 11240x 1690x 1687x 1x 1686x 1690x 1690x 1690x 1690x 7x 7x 1690x 1690x 1690x 1690x 1690x 1690x | import {
type AttributeNode,
ConstantTypes,
type DirectiveNode,
type ElementNode,
ElementTypes,
type ForParseResult,
Namespaces,
NodeTypes,
type RootNode,
type SimpleExpressionNode,
type SourceLocation,
type TemplateChildNode,
createRoot,
createSimpleExpression,
} from './ast'
import type { ParserOptions } from './options'
import Tokenizer, {
CharCodes,
ParseMode,
QuoteType,
Sequences,
State,
isWhitespace,
toCharCodes,
} from './tokenizer'
import {
type CompilerCompatOptions,
CompilerDeprecationTypes,
checkCompatEnabled,
isCompatEnabled,
warnDeprecation,
} from './compat/compatConfig'
import { NO, extend } from '@vue/shared'
import {
ErrorCodes,
createCompilerError,
defaultOnError,
defaultOnWarn,
} from './errors'
import {
forAliasRE,
isAllWhitespace,
isCoreComponent,
isSimpleIdentifier,
isStaticArgOf,
isVPre,
} from './utils'
import { decodeHTML } from 'entities/decode'
import {
type ParserOptions as BabelOptions,
parse,
parseExpression,
} from '@babel/parser'
type OptionalOptions =
| 'decodeEntities'
| 'whitespace'
| 'isNativeTag'
| 'isBuiltInComponent'
| 'expressionPlugins'
| keyof CompilerCompatOptions
export type MergedParserOptions = Omit<
Required<ParserOptions>,
OptionalOptions
> &
Pick<ParserOptions, OptionalOptions>
export const defaultParserOptions: MergedParserOptions = {
parseMode: 'base',
ns: Namespaces.HTML,
delimiters: [`{{`, `}}`],
getNamespace: () => Namespaces.HTML,
isVoidTag: NO,
isPreTag: NO,
isIgnoreNewlineTag: NO,
isCustomElement: NO,
onError: defaultOnError,
onWarn: defaultOnWarn,
comments: __DEV__,
prefixIdentifiers: false,
}
let currentOptions: MergedParserOptions = defaultParserOptions
let currentRoot: RootNode | null = null
// parser state
let currentInput = ''
let currentOpenTag: ElementNode | null = null
let currentProp: AttributeNode | DirectiveNode | null = null
let currentAttrValue = ''
let currentAttrStartIndex = -1
let currentAttrEndIndex = -1
let inPre = 0
let inVPre = false
let currentVPreBoundary: ElementNode | null = null
const stack: ElementNode[] = []
const tokenizer = new Tokenizer(stack, {
onerr: emitError,
ontext(start, end) {
onText(getSlice(start, end), start, end)
},
ontextentity(char, start, end) {
onText(char, start, end)
},
oninterpolation(start, end) {
Iif (inVPre) {
return onText(getSlice(start, end), start, end)
}
let innerStart = start + tokenizer.delimiterOpen.length
let innerEnd = end - tokenizer.delimiterClose.length
while (isWhitespace(currentInput.charCodeAt(innerStart))) {
innerStart++
}
while (isWhitespace(currentInput.charCodeAt(innerEnd - 1))) {
innerEnd--
}
let exp = getSlice(innerStart, innerEnd)
// decode entities for backwards compat
if (exp.includes('&')) {
Iif (__BROWSER__) {
exp = currentOptions.decodeEntities!(exp, false)
} else {
exp = decodeHTML(exp)
}
}
addNode({
type: NodeTypes.INTERPOLATION,
content: createExp(exp, false, getLoc(innerStart, innerEnd)),
loc: getLoc(start, end),
})
},
onopentagname(start, end) {
const name = getSlice(start, end)
currentOpenTag = {
type: NodeTypes.ELEMENT,
tag: name,
ns: currentOptions.getNamespace(name, stack[0], currentOptions.ns),
tagType: ElementTypes.ELEMENT, // will be refined on tag close
props: [],
children: [],
loc: getLoc(start - 1, end),
codegenNode: undefined,
}
},
onopentagend(end) {
endOpenTag(end)
},
onclosetag(start, end) {
const name = getSlice(start, end)
Eif (!currentOptions.isVoidTag(name)) {
let found = false
for (let i = 0; i < stack.length; i++) {
const e = stack[i]
if (e.tag.toLowerCase() === name.toLowerCase()) {
found = true
if (i > 0) {
emitError(ErrorCodes.X_MISSING_END_TAG, stack[0].loc.start.offset)
}
for (let j = 0; j <= i; j++) {
const el = stack.shift()!
onCloseTag(el, end, j < i)
}
break
}
}
if (!found) {
emitError(ErrorCodes.X_INVALID_END_TAG, backTrack(start, CharCodes.Lt))
}
}
},
onselfclosingtag(end) {
const name = currentOpenTag!.tag
currentOpenTag!.isSelfClosing = true
endOpenTag(end)
if (stack[0] && stack[0].tag === name) {
onCloseTag(stack.shift()!, end)
}
},
onattribname(start, end) {
// plain attribute
currentProp = {
type: NodeTypes.ATTRIBUTE,
name: getSlice(start, end),
nameLoc: getLoc(start, end),
value: undefined,
loc: getLoc(start),
}
},
ondirname(start, end) {
const raw = getSlice(start, end)
const name =
raw === '.' || raw === ':'
? 'bind'
: raw === '@'
? 'on'
: raw === '#'
? 'slot'
: raw.slice(2)
if (!inVPre && name === '') {
emitError(ErrorCodes.X_MISSING_DIRECTIVE_NAME, start)
}
if (inVPre || name === '') {
currentProp = {
type: NodeTypes.ATTRIBUTE,
name: raw,
nameLoc: getLoc(start, end),
value: undefined,
loc: getLoc(start),
}
} else {
currentProp = {
type: NodeTypes.DIRECTIVE,
name,
rawName: raw,
exp: undefined,
arg: undefined,
modifiers: raw === '.' ? [createSimpleExpression('prop')] : [],
loc: getLoc(start),
}
if (name === 'pre') {
inVPre = tokenizer.inVPre = true
currentVPreBoundary = currentOpenTag
// convert dirs before this one to attributes
const props = currentOpenTag!.props
for (let i = 0; i < props.length; i++) {
if (props[i].type === NodeTypes.DIRECTIVE) {
props[i] = dirToAttr(props[i] as DirectiveNode)
}
}
}
}
},
ondirarg(start, end) {
if (start === end) return
const arg = getSlice(start, end)
if (inVPre && !isVPre(currentProp!)) {
;(currentProp as AttributeNode).name += arg
setLocEnd((currentProp as AttributeNode).nameLoc, end)
} else {
const isStatic = arg[0] !== `[`
;(currentProp as DirectiveNode).arg = createExp(
isStatic ? arg : arg.slice(1, -1),
isStatic,
getLoc(start, end),
isStatic ? ConstantTypes.CAN_STRINGIFY : ConstantTypes.NOT_CONSTANT,
)
}
},
ondirmodifier(start, end) {
const mod = getSlice(start, end)
Iif (inVPre && !isVPre(currentProp!)) {
;(currentProp as AttributeNode).name += '.' + mod
setLocEnd((currentProp as AttributeNode).nameLoc, end)
} else if ((currentProp as DirectiveNode).name === 'slot') {
// slot has no modifiers, special case for edge cases like
// https://github.com/vuejs/language-tools/issues/2710
const arg = (currentProp as DirectiveNode).arg
Eif (arg) {
;(arg as SimpleExpressionNode).content += '.' + mod
setLocEnd(arg.loc, end)
}
} else {
const exp = createSimpleExpression(mod, true, getLoc(start, end))
;(currentProp as DirectiveNode).modifiers.push(exp)
}
},
onattribdata(start, end) {
currentAttrValue += getSlice(start, end)
if (currentAttrStartIndex < 0) currentAttrStartIndex = start
currentAttrEndIndex = end
},
onattribentity(char, start, end) {
currentAttrValue += char
if (currentAttrStartIndex < 0) currentAttrStartIndex = start
currentAttrEndIndex = end
},
onattribnameend(end) {
const start = currentProp!.loc.start.offset
const name = getSlice(start, end)
if (currentProp!.type === NodeTypes.DIRECTIVE) {
currentProp!.rawName = name
}
// check duplicate attrs
if (
currentOpenTag!.props.some(
p => (p.type === NodeTypes.DIRECTIVE ? p.rawName : p.name) === name,
)
) {
emitError(ErrorCodes.DUPLICATE_ATTRIBUTE, start)
}
},
onattribend(quote, end) {
Eif (currentOpenTag && currentProp) {
// finalize end pos
setLocEnd(currentProp.loc, end)
if (quote !== QuoteType.NoValue) {
Iif (__BROWSER__ && currentAttrValue.includes('&')) {
currentAttrValue = currentOptions.decodeEntities!(
currentAttrValue,
true,
)
}
if (currentProp.type === NodeTypes.ATTRIBUTE) {
// assign value
// condense whitespaces in class
if (currentProp!.name === 'class') {
currentAttrValue = condense(currentAttrValue).trim()
}
if (quote === QuoteType.Unquoted && !currentAttrValue) {
emitError(ErrorCodes.MISSING_ATTRIBUTE_VALUE, end)
}
currentProp!.value = {
type: NodeTypes.TEXT,
content: currentAttrValue,
loc:
quote === QuoteType.Unquoted
? getLoc(currentAttrStartIndex, currentAttrEndIndex)
: getLoc(currentAttrStartIndex - 1, currentAttrEndIndex + 1),
}
if (
tokenizer.inSFCRoot &&
currentOpenTag.tag === 'template' &&
currentProp.name === 'lang' &&
currentAttrValue &&
currentAttrValue !== 'html'
) {
// SFC root template with preprocessor lang, force tokenizer to
// RCDATA mode
tokenizer.enterRCDATA(toCharCodes(`</template`), 0)
}
} else {
// directive
let expParseMode = ExpParseMode.Normal
if (!__BROWSER__) {
if (currentProp.name === 'for') {
expParseMode = ExpParseMode.Skip
} else if (currentProp.name === 'slot') {
expParseMode = ExpParseMode.Params
} else if (
currentProp.name === 'on' &&
currentAttrValue.includes(';')
) {
expParseMode = ExpParseMode.Statements
}
}
currentProp.exp = createExp(
currentAttrValue,
false,
getLoc(currentAttrStartIndex, currentAttrEndIndex),
ConstantTypes.NOT_CONSTANT,
expParseMode,
)
if (currentProp.name === 'for') {
currentProp.forParseResult = parseForExpression(currentProp.exp)
}
// 2.x compat v-bind:foo.sync -> v-model:foo
let syncIndex = -1
if (
__COMPAT__ &&
currentProp.name === 'bind' &&
(syncIndex = currentProp.modifiers.findIndex(
mod => mod.content === 'sync',
)) > -1 &&
checkCompatEnabled(
CompilerDeprecationTypes.COMPILER_V_BIND_SYNC,
currentOptions,
currentProp.loc,
currentProp.arg!.loc.source,
)
) {
currentProp.name = 'model'
currentProp.modifiers.splice(syncIndex, 1)
}
}
}
if (
currentProp.type !== NodeTypes.DIRECTIVE ||
currentProp.name !== 'pre'
) {
currentOpenTag.props.push(currentProp)
}
}
currentAttrValue = ''
currentAttrStartIndex = currentAttrEndIndex = -1
},
oncomment(start, end) {
if (currentOptions.comments) {
addNode({
type: NodeTypes.COMMENT,
content: getSlice(start, end),
loc: getLoc(start - 4, end + 3),
})
}
},
onend() {
const end = currentInput.length
// EOF ERRORS
if ((__DEV__ || !__BROWSER__) && tokenizer.state !== State.Text) {
switch (tokenizer.state) {
case State.BeforeTagName:
case State.BeforeClosingTagName:
emitError(ErrorCodes.EOF_BEFORE_TAG_NAME, end)
break
case State.Interpolation:
case State.InterpolationClose:
emitError(
ErrorCodes.X_MISSING_INTERPOLATION_END,
tokenizer.sectionStart,
)
break
case State.InCommentLike:
if (tokenizer.currentSequence === Sequences.CdataEnd) {
emitError(ErrorCodes.EOF_IN_CDATA, end)
} else {
emitError(ErrorCodes.EOF_IN_COMMENT, end)
}
break
case State.InTagName:
case State.InSelfClosingTag:
case State.InClosingTagName:
case State.BeforeAttrName:
case State.InAttrName:
case State.InDirName:
case State.InDirArg:
case State.InDirDynamicArg:
case State.InDirModifier:
case State.AfterAttrName:
case State.BeforeAttrValue:
case State.InAttrValueDq: // "
case State.InAttrValueSq: // '
case State.InAttrValueNq:
emitError(ErrorCodes.EOF_IN_TAG, end)
break
default:
// console.log(tokenizer.state)
break
}
}
for (let index = 0; index < stack.length; index++) {
onCloseTag(stack[index], end - 1)
emitError(ErrorCodes.X_MISSING_END_TAG, stack[index].loc.start.offset)
}
},
oncdata(start, end) {
if (stack[0].ns !== Namespaces.HTML) {
onText(getSlice(start, end), start, end)
} else {
emitError(ErrorCodes.CDATA_IN_HTML_CONTENT, start - 9)
}
},
onprocessinginstruction(start) {
// ignore as we do not have runtime handling for this, only check error
Eif ((stack[0] ? stack[0].ns : currentOptions.ns) === Namespaces.HTML) {
emitError(
ErrorCodes.UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME,
start - 1,
)
}
},
})
// This regex doesn't cover the case if key or index aliases have destructuring,
// but those do not make sense in the first place, so this works in practice.
const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/
const stripParensRE = /^\(|\)$/g
function parseForExpression(
input: SimpleExpressionNode,
): ForParseResult | undefined {
const loc = input.loc
const exp = input.content
const inMatch = exp.match(forAliasRE)
if (!inMatch) return
const [, LHS, RHS] = inMatch
const createAliasExpression = (
content: string,
offset: number,
asParam = false,
) => {
const start = loc.start.offset + offset
const end = start + content.length
return createExp(
content,
false,
getLoc(start, end),
ConstantTypes.NOT_CONSTANT,
asParam ? ExpParseMode.Params : ExpParseMode.Normal,
)
}
const result: ForParseResult = {
source: createAliasExpression(RHS.trim(), exp.indexOf(RHS, LHS.length)),
value: undefined,
key: undefined,
index: undefined,
finalized: false,
}
let valueContent = LHS.trim().replace(stripParensRE, '').trim()
const trimmedOffset = LHS.indexOf(valueContent)
const iteratorMatch = valueContent.match(forIteratorRE)
if (iteratorMatch) {
valueContent = valueContent.replace(forIteratorRE, '').trim()
const keyContent = iteratorMatch[1].trim()
let keyOffset: number | undefined
if (keyContent) {
keyOffset = exp.indexOf(keyContent, trimmedOffset + valueContent.length)
result.key = createAliasExpression(keyContent, keyOffset, true)
}
if (iteratorMatch[2]) {
const indexContent = iteratorMatch[2].trim()
Eif (indexContent) {
result.index = createAliasExpression(
indexContent,
exp.indexOf(
indexContent,
result.key
? keyOffset! + keyContent.length
: trimmedOffset + valueContent.length,
),
true,
)
}
}
}
if (valueContent) {
result.value = createAliasExpression(valueContent, trimmedOffset, true)
}
return result
}
function getSlice(start: number, end: number) {
return currentInput.slice(start, end)
}
function endOpenTag(end: number) {
if (tokenizer.inSFCRoot) {
// in SFC mode, generate locations for root-level tags' inner content.
currentOpenTag!.innerLoc = getLoc(end + 1, end + 1)
}
addNode(currentOpenTag!)
const { tag, ns } = currentOpenTag!
if (ns === Namespaces.HTML && currentOptions.isPreTag(tag)) {
inPre++
}
if (currentOptions.isVoidTag(tag)) {
onCloseTag(currentOpenTag!, end)
} else {
stack.unshift(currentOpenTag!)
if (ns === Namespaces.SVG || ns === Namespaces.MATH_ML) {
tokenizer.inXML = true
}
}
currentOpenTag = null
}
function onText(content: string, start: number, end: number) {
Iif (__BROWSER__) {
const tag = stack[0] && stack[0].tag
if (tag !== 'script' && tag !== 'style' && content.includes('&')) {
content = currentOptions.decodeEntities!(content, false)
}
}
const parent = stack[0] || currentRoot
const lastNode = parent.children[parent.children.length - 1]
if (lastNode && lastNode.type === NodeTypes.TEXT) {
// merge
lastNode.content += content
setLocEnd(lastNode.loc, end)
} else {
parent.children.push({
type: NodeTypes.TEXT,
content,
loc: getLoc(start, end),
})
}
}
function onCloseTag(el: ElementNode, end: number, isImplied = false) {
// attach end position
if (isImplied) {
// implied close, end should be backtracked to close
setLocEnd(el.loc, backTrack(end, CharCodes.Lt))
} else {
setLocEnd(el.loc, lookAhead(end, CharCodes.Gt) + 1)
}
if (tokenizer.inSFCRoot) {
// SFC root tag, resolve inner end
if (el.children.length) {
el.innerLoc!.end = extend({}, el.children[el.children.length - 1].loc.end)
} else {
el.innerLoc!.end = extend({}, el.innerLoc!.start)
}
el.innerLoc!.source = getSlice(
el.innerLoc!.start.offset,
el.innerLoc!.end.offset,
)
}
// refine element type
const { tag, ns, children } = el
if (!inVPre) {
if (tag === 'slot') {
el.tagType = ElementTypes.SLOT
} else if (isFragmentTemplate(el)) {
el.tagType = ElementTypes.TEMPLATE
} else if (isComponent(el)) {
el.tagType = ElementTypes.COMPONENT
}
}
// whitespace management
if (!tokenizer.inRCDATA) {
el.children = condenseWhitespace(children)
}
if (ns === Namespaces.HTML && currentOptions.isIgnoreNewlineTag(tag)) {
// remove leading newline for <textarea> and <pre> per html spec
// https://html.spec.whatwg.org/multipage/parsing.html#parsing-main-inbody
const first = children[0]
if (first && first.type === NodeTypes.TEXT) {
first.content = first.content.replace(/^\r?\n/, '')
}
}
if (ns === Namespaces.HTML && currentOptions.isPreTag(tag)) {
inPre--
}
if (currentVPreBoundary === el) {
inVPre = tokenizer.inVPre = false
currentVPreBoundary = null
}
if (
tokenizer.inXML &&
(stack[0] ? stack[0].ns : currentOptions.ns) === Namespaces.HTML
) {
tokenizer.inXML = false
}
// 2.x compat / deprecation checks
Eif (__COMPAT__) {
const props = el.props
if (
__DEV__ &&
isCompatEnabled(
CompilerDeprecationTypes.COMPILER_V_IF_V_FOR_PRECEDENCE,
currentOptions,
)
) {
let hasIf = false
let hasFor = false
for (let i = 0; i < props.length; i++) {
const p = props[i]
if (p.type === NodeTypes.DIRECTIVE) {
if (p.name === 'if') {
hasIf = true
} else if (p.name === 'for') {
hasFor = true
}
}
if (hasIf && hasFor) {
warnDeprecation(
CompilerDeprecationTypes.COMPILER_V_IF_V_FOR_PRECEDENCE,
currentOptions,
el.loc,
)
break
}
}
}
if (
!tokenizer.inSFCRoot &&
isCompatEnabled(
CompilerDeprecationTypes.COMPILER_NATIVE_TEMPLATE,
currentOptions,
) &&
el.tag === 'template' &&
!isFragmentTemplate(el)
) {
__DEV__ &&
warnDeprecation(
CompilerDeprecationTypes.COMPILER_NATIVE_TEMPLATE,
currentOptions,
el.loc,
)
// unwrap
const parent = stack[0] || currentRoot
const index = parent.children.indexOf(el)
parent.children.splice(index, 1, ...el.children)
}
const inlineTemplateProp = props.find(
p => p.type === NodeTypes.ATTRIBUTE && p.name === 'inline-template',
) as AttributeNode
if (
inlineTemplateProp &&
checkCompatEnabled(
CompilerDeprecationTypes.COMPILER_INLINE_TEMPLATE,
currentOptions,
inlineTemplateProp.loc,
) &&
el.children.length
) {
inlineTemplateProp.value = {
type: NodeTypes.TEXT,
content: getSlice(
el.children[0].loc.start.offset,
el.children[el.children.length - 1].loc.end.offset,
),
loc: inlineTemplateProp.loc,
}
}
}
}
function lookAhead(index: number, c: number) {
let i = index
while (currentInput.charCodeAt(i) !== c && i < currentInput.length - 1) i++
return i
}
function backTrack(index: number, c: number) {
let i = index
while (currentInput.charCodeAt(i) !== c && i >= 0) i--
return i
}
const specialTemplateDir = new Set(['if', 'else', 'else-if', 'for', 'slot'])
function isFragmentTemplate({ tag, props }: ElementNode): boolean {
if (tag === 'template') {
for (let i = 0; i < props.length; i++) {
if (
props[i].type === NodeTypes.DIRECTIVE &&
specialTemplateDir.has((props[i] as DirectiveNode).name)
) {
return true
}
}
}
return false
}
function isComponent({ tag, props }: ElementNode): boolean {
if (currentOptions.isCustomElement(tag)) {
return false
}
if (
tag === 'component' ||
isUpperCase(tag.charCodeAt(0)) ||
isCoreComponent(tag) ||
(currentOptions.isBuiltInComponent &&
currentOptions.isBuiltInComponent(tag)) ||
(currentOptions.isNativeTag && !currentOptions.isNativeTag(tag))
) {
return true
}
// at this point the tag should be a native tag, but check for potential "is"
// casting
for (let i = 0; i < props.length; i++) {
const p = props[i]
if (p.type === NodeTypes.ATTRIBUTE) {
if (p.name === 'is' && p.value) {
if (p.value.content.startsWith('vue:')) {
return true
E} else if (
__COMPAT__ &&
checkCompatEnabled(
CompilerDeprecationTypes.COMPILER_IS_ON_ELEMENT,
currentOptions,
p.loc,
)
) {
return true
}
}
} else if (
__COMPAT__ &&
// :is on plain element - only treat as component in compat mode
p.name === 'bind' &&
isStaticArgOf(p.arg, 'is') &&
checkCompatEnabled(
CompilerDeprecationTypes.COMPILER_IS_ON_ELEMENT,
currentOptions,
p.loc,
)
) {
return true
}
}
return false
}
function isUpperCase(c: number) {
return c > 64 && c < 91
}
const windowsNewlineRE = /\r\n/g
function condenseWhitespace(nodes: TemplateChildNode[]): TemplateChildNode[] {
const shouldCondense = currentOptions.whitespace !== 'preserve'
let removedWhitespace = false
for (let i = 0; i < nodes.length; i++) {
const node = nodes[i]
if (node.type === NodeTypes.TEXT) {
if (!inPre) {
if (isAllWhitespace(node.content)) {
const prev = nodes[i - 1] && nodes[i - 1].type
const next = nodes[i + 1] && nodes[i + 1].type
// Remove if:
// - the whitespace is the first or last node, or:
// - (condense mode) the whitespace is between two comments, or:
// - (condense mode) the whitespace is between comment and element, or:
// - (condense mode) the whitespace is between two elements AND contains newline
if (
!prev ||
!next ||
(shouldCondense &&
((prev === NodeTypes.COMMENT &&
(next === NodeTypes.COMMENT || next === NodeTypes.ELEMENT)) ||
(prev === NodeTypes.ELEMENT &&
(next === NodeTypes.COMMENT ||
(next === NodeTypes.ELEMENT &&
hasNewlineChar(node.content))))))
) {
removedWhitespace = true
nodes[i] = null as any
} else {
// Otherwise, the whitespace is condensed into a single space
node.content = ' '
}
} else if (shouldCondense) {
// in condense mode, consecutive whitespaces in text are condensed
// down to a single space.
node.content = condense(node.content)
}
} else {
// #6410 normalize windows newlines in <pre>:
// in SSR, browsers normalize server-rendered \r\n into a single \n
// in the DOM
node.content = node.content.replace(windowsNewlineRE, '\n')
}
}
}
return removedWhitespace ? nodes.filter(Boolean) : nodes
}
function hasNewlineChar(str: string) {
for (let i = 0; i < str.length; i++) {
const c = str.charCodeAt(i)
if (c === CharCodes.NewLine || c === CharCodes.CarriageReturn) {
return true
}
}
return false
}
function condense(str: string) {
let ret = ''
let prevCharIsWhitespace = false
for (let i = 0; i < str.length; i++) {
if (isWhitespace(str.charCodeAt(i))) {
if (!prevCharIsWhitespace) {
ret += ' '
prevCharIsWhitespace = true
}
} else {
ret += str[i]
prevCharIsWhitespace = false
}
}
return ret
}
function addNode(node: TemplateChildNode) {
;(stack[0] || currentRoot).children.push(node)
}
function getLoc(start: number, end?: number): SourceLocation {
return {
start: tokenizer.getPos(start),
// @ts-expect-error allow late attachment
end: end == null ? end : tokenizer.getPos(end),
// @ts-expect-error allow late attachment
source: end == null ? end : getSlice(start, end),
}
}
export function cloneLoc(loc: SourceLocation): SourceLocation {
return getLoc(loc.start.offset, loc.end.offset)
}
function setLocEnd(loc: SourceLocation, end: number) {
loc.end = tokenizer.getPos(end)
loc.source = getSlice(loc.start.offset, end)
}
function dirToAttr(dir: DirectiveNode): AttributeNode {
const attr: AttributeNode = {
type: NodeTypes.ATTRIBUTE,
name: dir.rawName!,
nameLoc: getLoc(
dir.loc.start.offset,
dir.loc.start.offset + dir.rawName!.length,
),
value: undefined,
loc: dir.loc,
}
if (dir.exp) {
// account for quotes
const loc = dir.exp.loc
if (loc.end.offset < dir.loc.end.offset) {
loc.start.offset--
loc.start.column--
loc.end.offset++
loc.end.column++
}
attr.value = {
type: NodeTypes.TEXT,
content: (dir.exp as SimpleExpressionNode).content,
loc,
}
}
return attr
}
enum ExpParseMode {
Normal,
Params,
Statements,
Skip,
}
function createExp(
content: SimpleExpressionNode['content'],
isStatic: SimpleExpressionNode['isStatic'] = false,
loc: SourceLocation,
constType: ConstantTypes = ConstantTypes.NOT_CONSTANT,
parseMode = ExpParseMode.Normal,
) {
const exp = createSimpleExpression(content, isStatic, loc, constType)
if (
!__BROWSER__ &&
!isStatic &&
currentOptions.prefixIdentifiers &&
parseMode !== ExpParseMode.Skip &&
content.trim()
) {
if (isSimpleIdentifier(content)) {
exp.ast = null // fast path
return exp
}
try {
const plugins = currentOptions.expressionPlugins
const options: BabelOptions = {
plugins: plugins ? [...plugins, 'typescript'] : ['typescript'],
}
if (parseMode === ExpParseMode.Statements) {
// v-on with multi-inline-statements, pad 1 char
exp.ast = parse(` ${content} `, options).program
} else if (parseMode === ExpParseMode.Params) {
exp.ast = parseExpression(`(${content})=>{}`, options)
} else {
// normal exp, wrap with parens
exp.ast = parseExpression(`(${content})`, options)
}
} catch (e: any) {
exp.ast = false // indicate an error
emitError(ErrorCodes.X_INVALID_EXPRESSION, loc.start.offset, e.message)
}
}
return exp
}
function emitError(code: ErrorCodes, index: number, message?: string) {
currentOptions.onError(
createCompilerError(code, getLoc(index, index), undefined, message),
)
}
function reset() {
tokenizer.reset()
currentOpenTag = null
currentProp = null
currentAttrValue = ''
currentAttrStartIndex = -1
currentAttrEndIndex = -1
stack.length = 0
}
export function baseParse(input: string, options?: ParserOptions): RootNode {
reset()
currentInput = input
currentOptions = extend({}, defaultParserOptions)
if (options) {
let key: keyof ParserOptions
for (key in options) {
if (options[key] != null) {
// @ts-expect-error
currentOptions[key] = options[key]
}
}
}
if (__DEV__) {
if (!__BROWSER__ && currentOptions.decodeEntities) {
console.warn(
`[@vue/compiler-core] decodeEntities option is passed but will be ` +
`ignored in non-browser builds.`,
)
I} else if (__BROWSER__ && !__TEST__ && !currentOptions.decodeEntities) {
throw new Error(
`[@vue/compiler-core] decodeEntities option is required in browser builds.`,
)
}
}
tokenizer.mode =
currentOptions.parseMode === 'html'
? ParseMode.HTML
: currentOptions.parseMode === 'sfc'
? ParseMode.SFC
: ParseMode.BASE
tokenizer.inXML =
currentOptions.ns === Namespaces.SVG ||
currentOptions.ns === Namespaces.MATH_ML
const delimiters = options && options.delimiters
if (delimiters) {
tokenizer.delimiterOpen = toCharCodes(delimiters[0])
tokenizer.delimiterClose = toCharCodes(delimiters[1])
}
const root = (currentRoot = createRoot([], input))
tokenizer.parse(currentInput)
root.loc = getLoc(0, input.length)
root.children = condenseWhitespace(root.children)
currentRoot = null
return root
}
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