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Use jsdoc-type-pratt-parser instead of jsdoctypeparser #651

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Oct 7, 2023
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5 changes: 5 additions & 0 deletions .changeset/twenty-coats-melt.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"eslint-plugin-regexp": major
---

Use jsdoc-type-pratt-parser instead of jsdoctypeparser
144 changes: 103 additions & 41 deletions lib/utils/type-tracker/index.ts
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,10 @@ import {
hasType,
} from "./type-data"
import { getJSDoc, parseTypeText } from "./jsdoc"
import type { JSDocTypeNode } from "./jsdoc/jsdoctypeparser-ast"
import type {
RootResult as JSDocTypeRootResult,
KeyValueResult,
} from "jsdoc-type-pratt-parser"
import { TypeIterable, UNKNOWN_ITERABLE } from "./type-data/iterable"
import { getParent } from "../ast-utils"
import {
Expand All @@ -46,6 +49,7 @@ import {
isUnionOrIntersection,
isUnknown,
} from "../ts-utils"
import { assertNever } from "../util"

const ts = getTypeScript()!

Expand Down Expand Up @@ -596,94 +600,152 @@ function typeTextToTypeInfo(typeText?: string): TypeInfo | null {
return jsDocTypeNodeToTypeInfo(parseTypeText(typeText))
}

/** Get type from JSDocTypeNode */
function jsDocTypeNodeToTypeInfo(node: JSDocTypeNode | null): TypeInfo | null {
/** Get type from jsdoc-type-pratt-parser's RootResult */
function jsDocTypeNodeToTypeInfo(
node: JSDocTypeRootResult | null,
): TypeInfo | null {
if (node == null) {
return null
}
if (node.type === "NAME") {
return typeNameToTypeInfo(node.name)
if (node.type === "JsdocTypeName") {
return typeNameToTypeInfo(node.value)
}
if (node.type === "STRING_VALUE") {
if (node.type === "JsdocTypeStringValue") {
return STRING
}
if (node.type === "NUMBER_VALUE") {
if (node.type === "JsdocTypeNumber") {
return NUMBER
}
if (
node.type === "OPTIONAL" ||
node.type === "NULLABLE" ||
node.type === "NOT_NULLABLE" ||
node.type === "PARENTHESIS"
node.type === "JsdocTypeOptional" ||
node.type === "JsdocTypeNullable" ||
node.type === "JsdocTypeNotNullable" ||
node.type === "JsdocTypeParenthesis"
) {
return jsDocTypeNodeToTypeInfo(node.value)
return jsDocTypeNodeToTypeInfo(node.element)
}
if (node.type === "VARIADIC") {
if (node.type === "JsdocTypeVariadic") {
return new TypeArray(function* () {
if (node.value) {
yield jsDocTypeNodeToTypeInfo(node.value)
if (node.element) {
yield jsDocTypeNodeToTypeInfo(node.element)
} else {
yield null
}
})
}
if (node.type === "UNION" || node.type === "INTERSECTION") {
if (
node.type === "JsdocTypeUnion" ||
node.type === "JsdocTypeIntersection"
) {
return TypeUnionOrIntersection.buildType(function* () {
const left = jsDocTypeNodeToTypeInfo(node.left)
if (left) {
yield left
}
const right = jsDocTypeNodeToTypeInfo(node.right)
if (right) {
yield right
for (const e of node.elements) {
yield jsDocTypeNodeToTypeInfo(e)
}
})
}
if (node.type === "GENERIC") {
const subject = jsDocTypeNodeToTypeInfo(node.subject)
if (node.type === "JsdocTypeGeneric") {
const subject = jsDocTypeNodeToTypeInfo(node.left)
if (hasType(subject, "Array")) {
return new TypeArray(function* () {
yield jsDocTypeNodeToTypeInfo(node.objects[0])
yield jsDocTypeNodeToTypeInfo(node.elements[0])
})
}
if (hasType(subject, "Map")) {
return new TypeMap(
() => jsDocTypeNodeToTypeInfo(node.objects[0]),
() => jsDocTypeNodeToTypeInfo(node.objects[1]),
() => jsDocTypeNodeToTypeInfo(node.elements[0]),
() => jsDocTypeNodeToTypeInfo(node.elements[1]),
)
}
if (hasType(subject, "Set")) {
return new TypeSet(() => jsDocTypeNodeToTypeInfo(node.objects[0]))
return new TypeSet(() => jsDocTypeNodeToTypeInfo(node.elements[0]))
}
if (subject === UNKNOWN_ITERABLE) {
return new TypeIterable(() =>
jsDocTypeNodeToTypeInfo(node.objects[0]),
jsDocTypeNodeToTypeInfo(node.elements[0]),
)
}
return subject
}
if (node.type === "RECORD") {
if (node.type === "JsdocTypeObject") {
return new TypeObject(function* () {
for (const entry of node.entries) {
yield [entry.key, () => jsDocTypeNodeToTypeInfo(entry.value)]
for (const element of node.elements) {
if (element.type === "JsdocTypeObjectField") {
if (typeof element.key !== "string") {
// unknown key
continue
}
yield [
element.key,
() =>
element.right
? jsDocTypeNodeToTypeInfo(element.right)
: null,
]
} else if (element.type === "JsdocTypeJsdocObjectField") {
if (
element.left.type === "JsdocTypeNullable" &&
element.left.element.type === "JsdocTypeName"
) {
yield [
element.left.element.value,
() =>
element.right
? jsDocTypeNodeToTypeInfo(element.right)
: null,
]
}
}
}
})
}
if (node.type === "JsdocTypeTuple") {
if (node.elements[0].type === "JsdocTypeKeyValue") {
const elements = node.elements as KeyValueResult[]
return new TypeArray(function* () {
for (const element of elements) {
if (element.right) {
yield jsDocTypeNodeToTypeInfo(element.right)
}
}
})
}
const elements = node.elements as JSDocTypeRootResult[]
return new TypeArray(function* () {
for (const element of elements) {
yield jsDocTypeNodeToTypeInfo(element)
}
})
}
if (node.type === "ANY" || node.type === "UNKNOWN") {
if (node.type === "JsdocTypeFunction") {
if (node.returnType) {
const returnType = node.returnType
return new TypeFunction(() => jsDocTypeNodeToTypeInfo(returnType))
}
return UNKNOWN_FUNCTION
}
if (node.type === "JsdocTypeTypeof") {
return new TypeFunction(() => jsDocTypeNodeToTypeInfo(node.element))
}
if (
node.type === "JsdocTypeAny" ||
node.type === "JsdocTypeUnknown" ||
node.type === "JsdocTypeNull" ||
node.type === "JsdocTypeUndefined"
) {
return null
}
if (
node.type === "MEMBER" ||
node.type === "INNER_MEMBER" ||
node.type === "INSTANCE_MEMBER" ||
node.type === "EXTERNAL" ||
node.type === "FILE_PATH" ||
node.type === "MODULE"
node.type === "JsdocTypeImport" ||
node.type === "JsdocTypeKeyof" ||
node.type === "JsdocTypeNamePath" ||
node.type === "JsdocTypePredicate" ||
node.type === "JsdocTypeSpecialNamePath" ||
node.type === "JsdocTypeSymbol"
) {
return null
}

return null
throw assertNever(node)
}

/** Get type from type name */
Expand Down
11 changes: 5 additions & 6 deletions lib/utils/type-tracker/jsdoc/index.ts
Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,8 @@ import type * as ES from "estree"
import { isCommentToken } from "@eslint-community/eslint-utils"
import * as commentParser from "comment-parser"
import type { Spec } from "comment-parser"
// @ts-expect-error -- no type
import * as jsdocTypeParser from "jsdoctypeparser"
import type { JSDocTypeNode } from "./jsdoctypeparser-ast"
import * as jsdocTypeParser from "jsdoc-type-pratt-parser"
import type { RootResult } from "jsdoc-type-pratt-parser"

type ParsedComment = ReturnType<typeof commentParser.parse>[number]

Expand Down Expand Up @@ -182,10 +181,10 @@ function findJSDocComment(node: ES.Node, sourceCode: SourceCode) {
/**
* Parse JSDoc type text
*/
export function parseTypeText(text: string): JSDocTypeNode | null {
export function parseTypeText(text: string): RootResult | null {
try {
const ast: JSDocTypeNode = jsdocTypeParser.parse(text)
return ast
const result = jsdocTypeParser.tryParse(text)
return result
} catch {
return null
}
Expand Down
148 changes: 0 additions & 148 deletions lib/utils/type-tracker/jsdoc/jsdoctypeparser-ast.ts

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