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553x 1x 1x 1x 553x 1641x 1641x 92x 92x 92x 92x 92x 1579x 1579x 1579x 1579x 1579x 1579x 1579x 1579x 1579x 2x 1579x 1579x 1579x 1579x 1331x 1331x 11666x 10233x 10233x 11666x 1331x 1579x 1576x 1x 1x 1x 1576x 1576x 1579x 1579x 520x 1059x 377x 682x 1579x 1579x 1577x 1579x 1579x 7x 7x 7x 1579x 1579x 1579x 1579x 1579x 1579x 1579x | 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,
isCoreComponent,
isSimpleIdentifier,
isStaticArgOf,
} from './utils'
import { decodeHTML } from 'entities/lib/decode.js'
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) {
if (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('&')) {
if (__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)
if (!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) {
;(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)
if (inVPre) {
;(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
if (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) {
if (currentOpenTag && currentProp) {
// finalize end pos
setLocEnd(currentProp.loc, end)
if (quote !== QuoteType.NoValue) {
if (__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.rawName,
)
) {
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
if ((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()
if (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) {
if (__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, tag)
}
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
if (__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
} 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[],
tag?: string,
): 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 isAllWhitespace(str: string) {
for (let i = 0; i < str.length; i++) {
if (!isWhitespace(str.charCodeAt(i))) {
return false
}
}
return true
}
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),
}
}
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.`,
)
} else if (__BROWSER__ && !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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