parentheses.js 10 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.TSInferType = TSInferType;
  22. exports.TSInstantiationExpression = TSInstantiationExpression;
  23. exports.UnaryLike = exports.TSTypeAssertion = UnaryLike;
  24. exports.TSIntersectionType = exports.TSUnionType = TSUnionType;
  25. exports.IntersectionTypeAnnotation = exports.UnionTypeAnnotation = UnionTypeAnnotation;
  26. exports.UpdateExpression = UpdateExpression;
  27. exports.AwaitExpression = exports.YieldExpression = YieldExpression;
  28. var _t = require("@babel/types");
  29. var _index = require("./index.js");
  30. const {
  31. isArrayTypeAnnotation,
  32. isBinaryExpression,
  33. isCallExpression,
  34. isForOfStatement,
  35. isIndexedAccessType,
  36. isMemberExpression,
  37. isObjectPattern,
  38. isOptionalMemberExpression,
  39. isYieldExpression,
  40. isStatement
  41. } = _t;
  42. 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]]);
  43. function getBinaryPrecedence(node, nodeType) {
  44. if (nodeType === "BinaryExpression" || nodeType === "LogicalExpression") {
  45. return PRECEDENCE.get(node.operator);
  46. }
  47. if (nodeType === "TSAsExpression" || nodeType === "TSSatisfiesExpression") {
  48. return PRECEDENCE.get("in");
  49. }
  50. }
  51. function isTSTypeExpression(nodeType) {
  52. return nodeType === "TSAsExpression" || nodeType === "TSSatisfiesExpression" || nodeType === "TSTypeAssertion";
  53. }
  54. const isClassExtendsClause = (node, parent) => {
  55. const parentType = parent.type;
  56. return (parentType === "ClassDeclaration" || parentType === "ClassExpression") && parent.superClass === node;
  57. };
  58. const hasPostfixPart = (node, parent) => {
  59. const parentType = parent.type;
  60. return (parentType === "MemberExpression" || parentType === "OptionalMemberExpression") && parent.object === node || (parentType === "CallExpression" || parentType === "OptionalCallExpression" || parentType === "NewExpression") && parent.callee === node || parentType === "TaggedTemplateExpression" && parent.tag === node || parentType === "TSNonNullExpression";
  61. };
  62. function NullableTypeAnnotation(node, parent) {
  63. return isArrayTypeAnnotation(parent);
  64. }
  65. function FunctionTypeAnnotation(node, parent, tokenContext) {
  66. const parentType = parent.type;
  67. return (parentType === "UnionTypeAnnotation" || parentType === "IntersectionTypeAnnotation" || parentType === "ArrayTypeAnnotation" || Boolean(tokenContext & _index.TokenContext.arrowFlowReturnType)
  68. );
  69. }
  70. function UpdateExpression(node, parent) {
  71. return hasPostfixPart(node, parent) || isClassExtendsClause(node, parent);
  72. }
  73. function needsParenBeforeExpressionBrace(tokenContext) {
  74. return Boolean(tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.arrowBody));
  75. }
  76. function ObjectExpression(node, parent, tokenContext) {
  77. return needsParenBeforeExpressionBrace(tokenContext);
  78. }
  79. function DoExpression(node, parent, tokenContext) {
  80. return !node.async && Boolean(tokenContext & _index.TokenContext.expressionStatement);
  81. }
  82. function Binary(node, parent) {
  83. const parentType = parent.type;
  84. if (node.type === "BinaryExpression" && node.operator === "**" && parentType === "BinaryExpression" && parent.operator === "**") {
  85. return parent.left === node;
  86. }
  87. if (isClassExtendsClause(node, parent)) {
  88. return true;
  89. }
  90. if (hasPostfixPart(node, parent) || parentType === "UnaryExpression" || parentType === "SpreadElement" || parentType === "AwaitExpression") {
  91. return true;
  92. }
  93. const parentPos = getBinaryPrecedence(parent, parentType);
  94. if (parentPos != null) {
  95. const nodePos = getBinaryPrecedence(node, node.type);
  96. if (parentPos === nodePos && parentType === "BinaryExpression" && parent.right === node || parentPos > nodePos) {
  97. return true;
  98. }
  99. }
  100. return undefined;
  101. }
  102. function UnionTypeAnnotation(node, parent) {
  103. const parentType = parent.type;
  104. return parentType === "ArrayTypeAnnotation" || parentType === "NullableTypeAnnotation" || parentType === "IntersectionTypeAnnotation" || parentType === "UnionTypeAnnotation";
  105. }
  106. function OptionalIndexedAccessType(node, parent) {
  107. return isIndexedAccessType(parent) && parent.objectType === node;
  108. }
  109. function TSAsExpression(node, parent) {
  110. if ((parent.type === "AssignmentExpression" || parent.type === "AssignmentPattern") && parent.left === node) {
  111. return true;
  112. }
  113. if (parent.type === "BinaryExpression" && (parent.operator === "|" || parent.operator === "&") && node === parent.left) {
  114. return true;
  115. }
  116. return Binary(node, parent);
  117. }
  118. function TSUnionType(node, parent) {
  119. const parentType = parent.type;
  120. return parentType === "TSArrayType" || parentType === "TSOptionalType" || parentType === "TSIntersectionType" || parentType === "TSRestType";
  121. }
  122. function TSInferType(node, parent) {
  123. const parentType = parent.type;
  124. return parentType === "TSArrayType" || parentType === "TSOptionalType";
  125. }
  126. function TSInstantiationExpression(node, parent) {
  127. const parentType = parent.type;
  128. return (parentType === "CallExpression" || parentType === "OptionalCallExpression" || parentType === "NewExpression" || parentType === "TSInstantiationExpression") && !!parent.typeParameters;
  129. }
  130. function BinaryExpression(node, parent, tokenContext, inForStatementInit) {
  131. return node.operator === "in" && inForStatementInit;
  132. }
  133. function SequenceExpression(node, parent) {
  134. const parentType = parent.type;
  135. if (parentType === "SequenceExpression" || parentType === "ParenthesizedExpression" || parentType === "MemberExpression" && parent.property === node || parentType === "OptionalMemberExpression" && parent.property === node || parentType === "TemplateLiteral") {
  136. return false;
  137. }
  138. if (parentType === "ClassDeclaration") {
  139. return true;
  140. }
  141. if (parentType === "ForOfStatement") {
  142. return parent.right === node;
  143. }
  144. if (parentType === "ExportDefaultDeclaration") {
  145. return true;
  146. }
  147. return !isStatement(parent);
  148. }
  149. function YieldExpression(node, parent) {
  150. const parentType = parent.type;
  151. 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);
  152. }
  153. function ClassExpression(node, parent, tokenContext) {
  154. return Boolean(tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.exportDefault));
  155. }
  156. function UnaryLike(node, parent) {
  157. return hasPostfixPart(node, parent) || isBinaryExpression(parent) && parent.operator === "**" && parent.left === node || isClassExtendsClause(node, parent);
  158. }
  159. function FunctionExpression(node, parent, tokenContext) {
  160. return Boolean(tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.exportDefault));
  161. }
  162. function ConditionalExpression(node, parent) {
  163. const parentType = parent.type;
  164. if (parentType === "UnaryExpression" || parentType === "SpreadElement" || parentType === "BinaryExpression" || parentType === "LogicalExpression" || parentType === "ConditionalExpression" && parent.test === node || parentType === "AwaitExpression" || isTSTypeExpression(parentType)) {
  165. return true;
  166. }
  167. return UnaryLike(node, parent);
  168. }
  169. function OptionalMemberExpression(node, parent) {
  170. return isCallExpression(parent) && parent.callee === node || isMemberExpression(parent) && parent.object === node;
  171. }
  172. function AssignmentExpression(node, parent, tokenContext) {
  173. if (needsParenBeforeExpressionBrace(tokenContext) && isObjectPattern(node.left)) {
  174. return true;
  175. } else {
  176. return ConditionalExpression(node, parent);
  177. }
  178. }
  179. function LogicalExpression(node, parent) {
  180. const parentType = parent.type;
  181. if (isTSTypeExpression(parentType)) return true;
  182. if (parentType !== "LogicalExpression") return false;
  183. switch (node.operator) {
  184. case "||":
  185. return parent.operator === "??" || parent.operator === "&&";
  186. case "&&":
  187. return parent.operator === "??";
  188. case "??":
  189. return parent.operator !== "??";
  190. }
  191. }
  192. function Identifier(node, parent, tokenContext, _inForInit, getRawIdentifier) {
  193. var _node$extra;
  194. const parentType = parent.type;
  195. if ((_node$extra = node.extra) != null && _node$extra.parenthesized && parentType === "AssignmentExpression" && parent.left === node) {
  196. const rightType = parent.right.type;
  197. if ((rightType === "FunctionExpression" || rightType === "ClassExpression") && parent.right.id == null) {
  198. return true;
  199. }
  200. }
  201. if (getRawIdentifier && getRawIdentifier(node) !== node.name) {
  202. return false;
  203. }
  204. if (node.name === "let") {
  205. const isFollowedByBracket = isMemberExpression(parent, {
  206. object: node,
  207. computed: true
  208. }) || isOptionalMemberExpression(parent, {
  209. object: node,
  210. computed: true,
  211. optional: false
  212. });
  213. if (isFollowedByBracket && tokenContext & (_index.TokenContext.expressionStatement | _index.TokenContext.forHead | _index.TokenContext.forInHead)) {
  214. return true;
  215. }
  216. return Boolean(tokenContext & _index.TokenContext.forOfHead);
  217. }
  218. return node.name === "async" && isForOfStatement(parent, {
  219. left: node,
  220. await: false
  221. });
  222. }
  223. //# sourceMappingURL=parentheses.js.map