parentheses.js 12 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.AssignmentExpression = AssignmentExpression;
  6. exports.Binary = Binary;
  7. exports.BinaryExpression = BinaryExpression;
  8. exports.ClassExpression = ClassExpression;
  9. exports.ArrowFunctionExpression = exports.ConditionalExpression = ConditionalExpression;
  10. exports.DoExpression = DoExpression;
  11. exports.FunctionExpression = FunctionExpression;
  12. exports.FunctionTypeAnnotation = FunctionTypeAnnotation;
  13. exports.Identifier = Identifier;
  14. exports.LogicalExpression = LogicalExpression;
  15. exports.NullableTypeAnnotation = NullableTypeAnnotation;
  16. exports.ObjectExpression = ObjectExpression;
  17. exports.OptionalIndexedAccessType = OptionalIndexedAccessType;
  18. exports.OptionalCallExpression = exports.OptionalMemberExpression = OptionalMemberExpression;
  19. exports.SequenceExpression = SequenceExpression;
  20. exports.TSSatisfiesExpression = exports.TSAsExpression = TSAsExpression;
  21. exports.TSConditionalType = TSConditionalType;
  22. exports.TSConstructorType = exports.TSFunctionType = TSFunctionType;
  23. exports.TSInferType = TSInferType;
  24. exports.TSInstantiationExpression = TSInstantiationExpression;
  25. exports.TSIntersectionType = TSIntersectionType;
  26. exports.UnaryLike = exports.TSTypeAssertion = UnaryLike;
  27. exports.TSTypeOperator = TSTypeOperator;
  28. exports.TSUnionType = TSUnionType;
  29. exports.IntersectionTypeAnnotation = exports.UnionTypeAnnotation = UnionTypeAnnotation;
  30. exports.UpdateExpression = UpdateExpression;
  31. exports.AwaitExpression = exports.YieldExpression = YieldExpression;
  32. var _t = require("@babel/types");
  33. var _index = require("./index.js");
  34. const {
  35. isArrayTypeAnnotation,
  36. isBinaryExpression,
  37. isCallExpression,
  38. isForOfStatement,
  39. isIndexedAccessType,
  40. isMemberExpression,
  41. isObjectPattern,
  42. isOptionalMemberExpression,
  43. isYieldExpression,
  44. isStatement
  45. } = _t;
  46. const PRECEDENCE = new Map([["||", 0], ["??", 0], ["|>", 0], ["&&", 1], ["|", 2], ["^", 3], ["&", 4], ["==", 5], ["===", 5], ["!=", 5], ["!==", 5], ["<", 6], [">", 6], ["<=", 6], [">=", 6], ["in", 6], ["instanceof", 6], [">>", 7], ["<<", 7], [">>>", 7], ["+", 8], ["-", 8], ["*", 9], ["/", 9], ["%", 9], ["**", 10]]);
  47. function getBinaryPrecedence(node, nodeType) {
  48. if (nodeType === "BinaryExpression" || nodeType === "LogicalExpression") {
  49. return PRECEDENCE.get(node.operator);
  50. }
  51. if (nodeType === "TSAsExpression" || nodeType === "TSSatisfiesExpression") {
  52. return PRECEDENCE.get("in");
  53. }
  54. }
  55. function isTSTypeExpression(nodeType) {
  56. return nodeType === "TSAsExpression" || nodeType === "TSSatisfiesExpression" || nodeType === "TSTypeAssertion";
  57. }
  58. const isClassExtendsClause = (node, parent) => {
  59. const parentType = parent.type;
  60. return (parentType === "ClassDeclaration" || parentType === "ClassExpression") && parent.superClass === node;
  61. };
  62. const hasPostfixPart = (node, parent) => {
  63. const parentType = parent.type;
  64. return (parentType === "MemberExpression" || parentType === "OptionalMemberExpression") && parent.object === node || (parentType === "CallExpression" || parentType === "OptionalCallExpression" || parentType === "NewExpression") && parent.callee === node || parentType === "TaggedTemplateExpression" && parent.tag === node || parentType === "TSNonNullExpression";
  65. };
  66. function NullableTypeAnnotation(node, parent) {
  67. return isArrayTypeAnnotation(parent);
  68. }
  69. function FunctionTypeAnnotation(node, parent, tokenContext) {
  70. const parentType = parent.type;
  71. return (parentType === "UnionTypeAnnotation" || parentType === "IntersectionTypeAnnotation" || parentType === "ArrayTypeAnnotation" || Boolean(tokenContext & _index.TokenContext.arrowFlowReturnType)
  72. );
  73. }
  74. function UpdateExpression(node, parent) {
  75. return hasPostfixPart(node, parent) || isClassExtendsClause(node, parent);
  76. }
  77. function needsParenBeforeExpressionBrace(tokenContext) {
  78. return Boolean(tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.arrowBody));
  79. }
  80. function ObjectExpression(node, parent, tokenContext) {
  81. return needsParenBeforeExpressionBrace(tokenContext);
  82. }
  83. function DoExpression(node, parent, tokenContext) {
  84. return !node.async && Boolean(tokenContext & _index.TokenContext.expressionStatement);
  85. }
  86. function Binary(node, parent) {
  87. const parentType = parent.type;
  88. if (node.type === "BinaryExpression" && node.operator === "**" && parentType === "BinaryExpression" && parent.operator === "**") {
  89. return parent.left === node;
  90. }
  91. if (isClassExtendsClause(node, parent)) {
  92. return true;
  93. }
  94. if (hasPostfixPart(node, parent) || parentType === "UnaryExpression" || parentType === "SpreadElement" || parentType === "AwaitExpression") {
  95. return true;
  96. }
  97. const parentPos = getBinaryPrecedence(parent, parentType);
  98. if (parentPos != null) {
  99. const nodePos = getBinaryPrecedence(node, node.type);
  100. if (parentPos === nodePos && parentType === "BinaryExpression" && parent.right === node || parentPos > nodePos) {
  101. return true;
  102. }
  103. }
  104. }
  105. function UnionTypeAnnotation(node, parent) {
  106. const parentType = parent.type;
  107. return parentType === "ArrayTypeAnnotation" || parentType === "NullableTypeAnnotation" || parentType === "IntersectionTypeAnnotation" || parentType === "UnionTypeAnnotation";
  108. }
  109. function OptionalIndexedAccessType(node, parent) {
  110. return isIndexedAccessType(parent) && parent.objectType === node;
  111. }
  112. function TSAsExpression(node, parent) {
  113. if ((parent.type === "AssignmentExpression" || parent.type === "AssignmentPattern") && parent.left === node) {
  114. return true;
  115. }
  116. if (parent.type === "BinaryExpression" && (parent.operator === "|" || parent.operator === "&") && node === parent.left) {
  117. return true;
  118. }
  119. return Binary(node, parent);
  120. }
  121. function TSConditionalType(node, parent) {
  122. const parentType = parent.type;
  123. if (parentType === "TSArrayType" || parentType === "TSIndexedAccessType" && parent.objectType === node || parentType === "TSOptionalType" || parentType === "TSTypeOperator" || parentType === "TSTypeParameter") {
  124. return true;
  125. }
  126. if ((parentType === "TSIntersectionType" || parentType === "TSUnionType") && parent.types[0] === node) {
  127. return true;
  128. }
  129. if (parentType === "TSConditionalType" && (parent.checkType === node || parent.extendsType === node)) {
  130. return true;
  131. }
  132. return false;
  133. }
  134. function TSUnionType(node, parent) {
  135. const parentType = parent.type;
  136. return parentType === "TSIntersectionType" || parentType === "TSTypeOperator" || parentType === "TSArrayType" || parentType === "TSIndexedAccessType" && parent.objectType === node || parentType === "TSOptionalType";
  137. }
  138. function TSIntersectionType(node, parent) {
  139. const parentType = parent.type;
  140. return parentType === "TSTypeOperator" || parentType === "TSArrayType" || parentType === "TSIndexedAccessType" && parent.objectType === node || parentType === "TSOptionalType";
  141. }
  142. function TSInferType(node, parent) {
  143. const parentType = parent.type;
  144. if (parentType === "TSArrayType" || parentType === "TSIndexedAccessType" && parent.objectType === node || parentType === "TSOptionalType") {
  145. return true;
  146. }
  147. if (node.typeParameter.constraint) {
  148. if ((parentType === "TSIntersectionType" || parentType === "TSUnionType") && parent.types[0] === node) {
  149. return true;
  150. }
  151. }
  152. return false;
  153. }
  154. function TSTypeOperator(node, parent) {
  155. const parentType = parent.type;
  156. return parentType === "TSArrayType" || parentType === "TSIndexedAccessType" && parent.objectType === node || parentType === "TSOptionalType";
  157. }
  158. function TSInstantiationExpression(node, parent) {
  159. const parentType = parent.type;
  160. return (parentType === "CallExpression" || parentType === "OptionalCallExpression" || parentType === "NewExpression" || parentType === "TSInstantiationExpression") && !!parent.typeParameters;
  161. }
  162. function TSFunctionType(node, parent) {
  163. const parentType = parent.type;
  164. return parentType === "TSIntersectionType" || parentType === "TSUnionType" || parentType === "TSTypeOperator" || parentType === "TSOptionalType" || parentType === "TSArrayType" || parentType === "TSIndexedAccessType" && parent.objectType === node || parentType === "TSConditionalType" && (parent.checkType === node || parent.extendsType === node);
  165. }
  166. function BinaryExpression(node, parent, tokenContext) {
  167. return node.operator === "in" && Boolean(tokenContext & _index.TokenContext.forInOrInitHeadAccumulate);
  168. }
  169. function SequenceExpression(node, parent) {
  170. const parentType = parent.type;
  171. if (parentType === "SequenceExpression" || parentType === "ParenthesizedExpression" || parentType === "MemberExpression" && parent.property === node || parentType === "OptionalMemberExpression" && parent.property === node || parentType === "TemplateLiteral") {
  172. return false;
  173. }
  174. if (parentType === "ClassDeclaration") {
  175. return true;
  176. }
  177. if (parentType === "ForOfStatement") {
  178. return parent.right === node;
  179. }
  180. if (parentType === "ExportDefaultDeclaration") {
  181. return true;
  182. }
  183. return !isStatement(parent);
  184. }
  185. function YieldExpression(node, parent) {
  186. const parentType = parent.type;
  187. return parentType === "BinaryExpression" || parentType === "LogicalExpression" || parentType === "UnaryExpression" || parentType === "SpreadElement" || hasPostfixPart(node, parent) || parentType === "AwaitExpression" && isYieldExpression(node) || parentType === "ConditionalExpression" && node === parent.test || isClassExtendsClause(node, parent) || isTSTypeExpression(parentType);
  188. }
  189. function ClassExpression(node, parent, tokenContext) {
  190. return Boolean(tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.exportDefault));
  191. }
  192. function UnaryLike(node, parent) {
  193. return hasPostfixPart(node, parent) || isBinaryExpression(parent) && parent.operator === "**" && parent.left === node || isClassExtendsClause(node, parent);
  194. }
  195. function FunctionExpression(node, parent, tokenContext) {
  196. return Boolean(tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.exportDefault));
  197. }
  198. function ConditionalExpression(node, parent) {
  199. const parentType = parent.type;
  200. if (parentType === "UnaryExpression" || parentType === "SpreadElement" || parentType === "BinaryExpression" || parentType === "LogicalExpression" || parentType === "ConditionalExpression" && parent.test === node || parentType === "AwaitExpression" || isTSTypeExpression(parentType)) {
  201. return true;
  202. }
  203. return UnaryLike(node, parent);
  204. }
  205. function OptionalMemberExpression(node, parent) {
  206. return isCallExpression(parent) && parent.callee === node || isMemberExpression(parent) && parent.object === node;
  207. }
  208. function AssignmentExpression(node, parent, tokenContext) {
  209. if (needsParenBeforeExpressionBrace(tokenContext) && isObjectPattern(node.left)) {
  210. return true;
  211. } else {
  212. return ConditionalExpression(node, parent);
  213. }
  214. }
  215. function LogicalExpression(node, parent) {
  216. const parentType = parent.type;
  217. if (isTSTypeExpression(parentType)) return true;
  218. if (parentType !== "LogicalExpression") return false;
  219. switch (node.operator) {
  220. case "||":
  221. return parent.operator === "??" || parent.operator === "&&";
  222. case "&&":
  223. return parent.operator === "??";
  224. case "??":
  225. return parent.operator !== "??";
  226. }
  227. }
  228. function Identifier(node, parent, tokenContext, getRawIdentifier) {
  229. var _node$extra;
  230. const parentType = parent.type;
  231. if ((_node$extra = node.extra) != null && _node$extra.parenthesized && parentType === "AssignmentExpression" && parent.left === node) {
  232. const rightType = parent.right.type;
  233. if ((rightType === "FunctionExpression" || rightType === "ClassExpression") && parent.right.id == null) {
  234. return true;
  235. }
  236. }
  237. if (getRawIdentifier && getRawIdentifier(node) !== node.name) {
  238. return false;
  239. }
  240. if (node.name === "let") {
  241. const isFollowedByBracket = isMemberExpression(parent, {
  242. object: node,
  243. computed: true
  244. }) || isOptionalMemberExpression(parent, {
  245. object: node,
  246. computed: true,
  247. optional: false
  248. });
  249. if (isFollowedByBracket && tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.forInitHead | _index.TokenContext.forInHead)) {
  250. return true;
  251. }
  252. return Boolean(tokenContext & _index.TokenContext.forOfHead);
  253. }
  254. return node.name === "async" && isForOfStatement(parent, {
  255. left: node,
  256. await: false
  257. });
  258. }
  259. //# sourceMappingURL=parentheses.js.map