astx
Version:
super powerful structural search and replace for JavaScript and TypeScript to automate your refactoring
138 lines (130 loc) • 19.8 kB
JavaScript
import __debug from 'debug'
import AssignmentPattern from './AssignmentPattern.mjs'
import BooleanLiteral from './BooleanLiteral.mjs'
import CallExpression from './CallExpression.mjs'
import ClassImplements from './ClassImplements.mjs'
import ClassProperty from './ClassProperty.mjs'
import compileGenericArrayMatcher from './GenericArrayMatcher.mjs'
import compileGenericNodeMatcher from './GenericNodeMatcher.mjs'
import ExportSpecifier from './ExportSpecifier.mjs'
import ExpressionStatement from './ExpressionStatement.mjs'
import FunctionTypeParam from './FunctionTypeParam.mjs'
import GenericTypeAnnotation from './GenericTypeAnnotation.mjs'
import Identifier from './Identifier.mjs'
import ImportSpecifier from './ImportSpecifier.mjs'
import JSXAttribute from './JSXAttribute.mjs'
import JSXElement from './JSXElement.mjs'
import JSXExpressionContainer from './JSXExpressionContainer.mjs'
import JSXIdentifier from './JSXIdentifier.mjs'
import JSXText from './JSXText.mjs'
import NumericLiteral from './NumericLiteral.mjs'
import ObjectProperty from './ObjectProperty.mjs'
import ObjectTypeProperty from './ObjectTypeProperty.mjs'
import RegExpLiteral from './RegExpLiteral.mjs'
import SpreadElement from './SpreadElement.mjs'
import StringLiteral from './StringLiteral.mjs'
import TemplateLiteral from './TemplateLiteral.mjs'
import TSExpressionWithTypeArguments from './TSExpressionWithTypeArguments.mjs'
import TSPropertySignature from './TSPropertySignature.mjs'
import TSTypeAnnotation from './TSTypeAnnotation.mjs'
import TSTypeParameter from './TSTypeParameter.mjs'
import TSTypeReference from './TSTypeReference.mjs'
import TypeAnnotation from './TypeAnnotation.mjs'
import TypeParameter from './TypeParameter.mjs'
import VariableDeclarator from './VariableDeclarator.mjs'
import { isCapturePlaceholder } from './Placeholder.mjs'
const _debug = __debug('astx:match')
function hasCapturePlaceholder(captures) {
for (const key in captures) {
if (isCapturePlaceholder(key)) return true
}
return false
}
export function mergeCaptures(...results) {
let current = null
for (const result of results) {
if (!result) continue
if (result.captures && hasCapturePlaceholder(result.captures)) {
if (!current) current = {}
if (!current.captures) current.captures = {}
for (const [key, value] of Object.entries(result.captures)) {
if (isCapturePlaceholder(key)) current.captures[key] = value
}
}
if (result.arrayCaptures && hasCapturePlaceholder(result.arrayCaptures)) {
if (!current) current = {}
if (!current.arrayCaptures) current.arrayCaptures = {}
for (const [key, value] of Object.entries(result.arrayCaptures)) {
if (isCapturePlaceholder(key)) current.arrayCaptures[key] = value
}
}
if (result.stringCaptures) {
if (!current) current = {}
if (!current.stringCaptures) current.stringCaptures = {}
Object.assign(current.stringCaptures, result.stringCaptures)
}
}
return current
}
const nodeMatchers = {
AssignmentPattern,
BooleanLiteral,
CallExpression,
ClassImplements,
ClassProperty,
ExportSpecifier,
ExpressionStatement,
FunctionTypeParam,
GenericTypeAnnotation,
Identifier,
ImportSpecifier,
JSXAttribute,
JSXElement,
JSXExpressionContainer,
JSXIdentifier,
JSXText,
NumericLiteral,
// ObjectExpression,
ObjectProperty,
ObjectTypeProperty,
RegExpLiteral,
SpreadElement,
StringLiteral,
TemplateLiteral,
TSExpressionWithTypeArguments,
TSPropertySignature,
TSTypeAnnotation,
TSTypeParameter,
TSTypeReference,
TypeAnnotation,
TypeParameter,
VariableDeclarator,
}
export function convertPredicateMatcher(pattern, matcher, { debug }) {
return {
pattern,
nodeType: matcher.nodeType,
match: (path, matchSoFar) => {
debug('%s (specific)', pattern.value.type)
const result = matcher.match(path, matchSoFar)
if (result) {
if (result === true) debug(' matched')
return typeof result === 'object' ? result : matchSoFar || {}
} else {
if (result === false) debug(` didn't match`)
return null
}
},
}
}
export default function compileMatcher(path, rootCompileOptions) {
const { debug = _debug } = rootCompileOptions
const compileOptions = { ...rootCompileOptions, debug }
if (Array.isArray(path.value)) {
return compileGenericArrayMatcher(path, compileOptions)
} else if (nodeMatchers[path.value.type]) {
const matcher = nodeMatchers[path.value.type](path, compileOptions)
if (matcher) return matcher
}
return compileGenericNodeMatcher(path, compileOptions)
} //# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["__debug","AssignmentPattern","BooleanLiteral","CallExpression","ClassImplements","ClassProperty","compileGenericArrayMatcher","compileGenericNodeMatcher","ExportSpecifier","ExpressionStatement","FunctionTypeParam","GenericTypeAnnotation","Identifier","ImportSpecifier","JSXAttribute","JSXElement","JSXExpressionContainer","JSXIdentifier","JSXText","NumericLiteral","ObjectProperty","ObjectTypeProperty","RegExpLiteral","SpreadElement","StringLiteral","TemplateLiteral","TSExpressionWithTypeArguments","TSPropertySignature","TSTypeAnnotation","TSTypeParameter","TSTypeReference","TypeAnnotation","TypeParameter","VariableDeclarator","isCapturePlaceholder","_debug","hasCapturePlaceholder","captures","key","mergeCaptures","results","current","result","value","Object","entries","arrayCaptures","stringCaptures","assign","nodeMatchers","convertPredicateMatcher","pattern","matcher","debug","nodeType","match","path","matchSoFar","type","compileMatcher","rootCompileOptions","compileOptions","Array","isArray"],"sources":["../../src/compileMatcher/index.ts"],"sourcesContent":["import { NodeType, NodePath, Node, Debugger } from '../types'\nimport * as t from 'ast-types'\nimport __debug from 'debug'\nimport { Backend } from '../backend/Backend'\nimport AssignmentPattern from './AssignmentPattern'\nimport BooleanLiteral from './BooleanLiteral'\nimport CallExpression from './CallExpression'\nimport ClassImplements from './ClassImplements'\nimport ClassProperty from './ClassProperty'\nimport compileGenericArrayMatcher from './GenericArrayMatcher'\nimport compileGenericNodeMatcher from './GenericNodeMatcher'\nimport ExportSpecifier from './ExportSpecifier'\nimport ExpressionStatement from './ExpressionStatement'\nimport FunctionTypeParam from './FunctionTypeParam'\nimport GenericTypeAnnotation from './GenericTypeAnnotation'\nimport Identifier from './Identifier'\nimport ImportSpecifier from './ImportSpecifier'\nimport JSXAttribute from './JSXAttribute'\nimport JSXElement from './JSXElement'\nimport JSXExpressionContainer from './JSXExpressionContainer'\nimport JSXIdentifier from './JSXIdentifier'\nimport JSXText from './JSXText'\nimport NumericLiteral from './NumericLiteral'\nimport ObjectProperty from './ObjectProperty'\nimport ObjectTypeProperty from './ObjectTypeProperty'\nimport RegExpLiteral from './RegExpLiteral'\nimport SpreadElement from './SpreadElement'\nimport StringLiteral from './StringLiteral'\nimport TemplateLiteral from './TemplateLiteral'\nimport TSExpressionWithTypeArguments from './TSExpressionWithTypeArguments'\nimport TSPropertySignature from './TSPropertySignature'\nimport TSTypeAnnotation from './TSTypeAnnotation'\nimport TSTypeParameter from './TSTypeParameter'\nimport TSTypeReference from './TSTypeReference'\nimport TypeAnnotation from './TypeAnnotation'\nimport TypeParameter from './TypeParameter'\nimport VariableDeclarator from './VariableDeclarator'\nimport { isCapturePlaceholder } from './Placeholder'\n\nconst _debug = __debug('astx:match')\n\nexport type RootCompileOptions = {\n  where?: { [captureName: string]: (path: NodePath) => boolean }\n  debug?: Debugger\n  backend: Backend\n}\n\nexport type CompileOptions = {\n  where?: { [captureName: string]: (path: NodePath) => boolean }\n  debug: Debugger\n  backend: Backend\n}\n\nexport type Captures = Record<string, NodePath>\nexport type ArrayCaptures = Record<string, NodePath[]>\nexport type StringCaptures = Record<string, string>\n\nexport type MatchResult = {\n  captures?: Captures\n  arrayCaptures?: ArrayCaptures\n  stringCaptures?: StringCaptures\n} | null\n\nfunction hasCapturePlaceholder(captures?: Captures | ArrayCaptures): boolean {\n  for (const key in captures) {\n    if (isCapturePlaceholder(key)) return true\n  }\n  return false\n}\n\nexport function mergeCaptures(...results: MatchResult[]): MatchResult {\n  let current: MatchResult = null\n  for (const result of results) {\n    if (!result) continue\n    if (result.captures && hasCapturePlaceholder(result.captures)) {\n      if (!current) current = {}\n      if (!current.captures) current.captures = {}\n      for (const [key, value] of Object.entries(result.captures)) {\n        if (isCapturePlaceholder(key)) current.captures[key] = value\n      }\n    }\n    if (result.arrayCaptures && hasCapturePlaceholder(result.arrayCaptures)) {\n      if (!current) current = {}\n      if (!current.arrayCaptures) current.arrayCaptures = {}\n      for (const [key, value] of Object.entries(result.arrayCaptures)) {\n        if (isCapturePlaceholder(key)) current.arrayCaptures[key] = value\n      }\n    }\n    if (result.stringCaptures) {\n      if (!current) current = {}\n      if (!current.stringCaptures) current.stringCaptures = {}\n      Object.assign(current.stringCaptures, result.stringCaptures)\n    }\n  }\n  return current\n}\n\nexport type PredicateMatcher = {\n  match: (path: NodePath, matchSoFar: MatchResult) => boolean\n  nodeType?: keyof typeof t.namedTypes | (keyof typeof t.namedTypes)[]\n}\n\nexport interface CompiledMatcher {\n  pattern: NodePath<Node, Node> | NodePath<Node, Node>[]\n  optional?: true\n  placeholder?: string\n  arrayPlaceholder?: string\n  restPlaceholder?: string\n  flag?: '$Ordered' | '$Unordered'\n  match: (path: NodePath, matchSoFar: MatchResult) => MatchResult\n  nodeType?: NodeType | NodeType[]\n}\n\nconst nodeMatchers: Record<\n  string,\n  (\n    path: NodePath<any, any>,\n    options: CompileOptions\n  ) => CompiledMatcher | undefined | void\n> = {\n  AssignmentPattern,\n  BooleanLiteral,\n  CallExpression,\n  ClassImplements,\n  ClassProperty,\n  ExportSpecifier,\n  ExpressionStatement,\n  FunctionTypeParam,\n  GenericTypeAnnotation,\n  Identifier,\n  ImportSpecifier,\n  JSXAttribute,\n  JSXElement,\n  JSXExpressionContainer,\n  JSXIdentifier,\n  JSXText,\n  NumericLiteral,\n  // ObjectExpression,\n  ObjectProperty,\n  ObjectTypeProperty,\n  RegExpLiteral,\n  SpreadElement,\n  StringLiteral,\n  TemplateLiteral,\n  TSExpressionWithTypeArguments,\n  TSPropertySignature,\n  TSTypeAnnotation,\n  TSTypeParameter,\n  TSTypeReference,\n  TypeAnnotation,\n  TypeParameter,\n  VariableDeclarator,\n}\n\nexport function convertPredicateMatcher(\n  pattern: NodePath,\n  matcher: PredicateMatcher,\n  { debug }: CompileOptions\n): CompiledMatcher {\n  return {\n    pattern,\n    nodeType: matcher.nodeType,\n    match: (path: NodePath, matchSoFar: MatchResult): MatchResult => {\n      debug('%s (specific)', pattern.value.type)\n      const result = matcher.match(path, matchSoFar)\n      if (result) {\n        if (result === true) debug('  matched')\n        return typeof result === 'object' ? result : matchSoFar || {}\n      } else {\n        if (result === false) debug(`  didn't match`)\n        return null\n      }\n    },\n  }\n}\n\nexport default function compileMatcher(\n  path: NodePath,\n  rootCompileOptions: RootCompileOptions\n): CompiledMatcher {\n  const { debug = _debug } = rootCompileOptions\n  const compileOptions = { ...rootCompileOptions, debug }\n  if (Array.isArray(path.value)) {\n    return compileGenericArrayMatcher(path, compileOptions)\n  } else if (nodeMatchers[path.value.type]) {\n    const matcher = nodeMatchers[path.value.type](path, compileOptions)\n    if (matcher) return matcher\n  }\n  return compileGenericNodeMatcher(path, 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