expressions.js 7.5 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.LogicalExpression = exports.BinaryExpression = exports.AssignmentExpression = AssignmentExpression;
  6. exports.AssignmentPattern = AssignmentPattern;
  7. exports.AwaitExpression = AwaitExpression;
  8. exports.BindExpression = BindExpression;
  9. exports.CallExpression = CallExpression;
  10. exports.ConditionalExpression = ConditionalExpression;
  11. exports.Decorator = Decorator;
  12. exports.DoExpression = DoExpression;
  13. exports.EmptyStatement = EmptyStatement;
  14. exports.ExpressionStatement = ExpressionStatement;
  15. exports.Import = Import;
  16. exports.MemberExpression = MemberExpression;
  17. exports.MetaProperty = MetaProperty;
  18. exports.ModuleExpression = ModuleExpression;
  19. exports.NewExpression = NewExpression;
  20. exports.OptionalCallExpression = OptionalCallExpression;
  21. exports.OptionalMemberExpression = OptionalMemberExpression;
  22. exports.ParenthesizedExpression = ParenthesizedExpression;
  23. exports.PrivateName = PrivateName;
  24. exports.SequenceExpression = SequenceExpression;
  25. exports.Super = Super;
  26. exports.ThisExpression = ThisExpression;
  27. exports.UnaryExpression = UnaryExpression;
  28. exports.UpdateExpression = UpdateExpression;
  29. exports.V8IntrinsicIdentifier = V8IntrinsicIdentifier;
  30. exports.YieldExpression = YieldExpression;
  31. var _t = require("@babel/types");
  32. var n = require("../node");
  33. const {
  34. isCallExpression,
  35. isLiteral,
  36. isMemberExpression,
  37. isNewExpression
  38. } = _t;
  39. function UnaryExpression(node) {
  40. if (node.operator === "void" || node.operator === "delete" || node.operator === "typeof" || node.operator === "throw") {
  41. this.word(node.operator);
  42. this.space();
  43. } else {
  44. this.token(node.operator);
  45. }
  46. this.print(node.argument, node);
  47. }
  48. function DoExpression(node) {
  49. if (node.async) {
  50. this.word("async");
  51. this.space();
  52. }
  53. this.word("do");
  54. this.space();
  55. this.print(node.body, node);
  56. }
  57. function ParenthesizedExpression(node) {
  58. this.token("(");
  59. this.print(node.expression, node);
  60. this.token(")");
  61. }
  62. function UpdateExpression(node) {
  63. if (node.prefix) {
  64. this.token(node.operator);
  65. this.print(node.argument, node);
  66. } else {
  67. this.printTerminatorless(node.argument, node, true);
  68. this.token(node.operator);
  69. }
  70. }
  71. function ConditionalExpression(node) {
  72. this.print(node.test, node);
  73. this.space();
  74. this.token("?");
  75. this.space();
  76. this.print(node.consequent, node);
  77. this.space();
  78. this.token(":");
  79. this.space();
  80. this.print(node.alternate, node);
  81. }
  82. function NewExpression(node, parent) {
  83. this.word("new");
  84. this.space();
  85. this.print(node.callee, node);
  86. if (this.format.minified && node.arguments.length === 0 && !node.optional && !isCallExpression(parent, {
  87. callee: node
  88. }) && !isMemberExpression(parent) && !isNewExpression(parent)) {
  89. return;
  90. }
  91. this.print(node.typeArguments, node);
  92. this.print(node.typeParameters, node);
  93. if (node.optional) {
  94. this.token("?.");
  95. }
  96. this.token("(");
  97. this.printList(node.arguments, node);
  98. this.token(")");
  99. }
  100. function SequenceExpression(node) {
  101. this.printList(node.expressions, node);
  102. }
  103. function ThisExpression() {
  104. this.word("this");
  105. }
  106. function Super() {
  107. this.word("super");
  108. }
  109. function isDecoratorMemberExpression(node) {
  110. switch (node.type) {
  111. case "Identifier":
  112. return true;
  113. case "MemberExpression":
  114. return !node.computed && node.property.type === "Identifier" && isDecoratorMemberExpression(node.object);
  115. default:
  116. return false;
  117. }
  118. }
  119. function shouldParenthesizeDecoratorExpression(node) {
  120. if (node.type === "CallExpression") {
  121. node = node.callee;
  122. }
  123. if (node.type === "ParenthesizedExpression") {
  124. return false;
  125. }
  126. return !isDecoratorMemberExpression(node);
  127. }
  128. function Decorator(node) {
  129. this.token("@");
  130. const {
  131. expression
  132. } = node;
  133. if (shouldParenthesizeDecoratorExpression(expression)) {
  134. this.token("(");
  135. this.print(expression, node);
  136. this.token(")");
  137. } else {
  138. this.print(expression, node);
  139. }
  140. this.newline();
  141. }
  142. function OptionalMemberExpression(node) {
  143. this.print(node.object, node);
  144. if (!node.computed && isMemberExpression(node.property)) {
  145. throw new TypeError("Got a MemberExpression for MemberExpression property");
  146. }
  147. let computed = node.computed;
  148. if (isLiteral(node.property) && typeof node.property.value === "number") {
  149. computed = true;
  150. }
  151. if (node.optional) {
  152. this.token("?.");
  153. }
  154. if (computed) {
  155. this.token("[");
  156. this.print(node.property, node);
  157. this.token("]");
  158. } else {
  159. if (!node.optional) {
  160. this.token(".");
  161. }
  162. this.print(node.property, node);
  163. }
  164. }
  165. function OptionalCallExpression(node) {
  166. this.print(node.callee, node);
  167. this.print(node.typeArguments, node);
  168. this.print(node.typeParameters, node);
  169. if (node.optional) {
  170. this.token("?.");
  171. }
  172. this.token("(");
  173. this.printList(node.arguments, node);
  174. this.token(")");
  175. }
  176. function CallExpression(node) {
  177. this.print(node.callee, node);
  178. this.print(node.typeArguments, node);
  179. this.print(node.typeParameters, node);
  180. this.token("(");
  181. this.printList(node.arguments, node);
  182. this.token(")");
  183. }
  184. function Import() {
  185. this.word("import");
  186. }
  187. function AwaitExpression(node) {
  188. this.word("await");
  189. if (node.argument) {
  190. this.space();
  191. this.printTerminatorless(node.argument, node, false);
  192. }
  193. }
  194. function YieldExpression(node) {
  195. this.word("yield");
  196. if (node.delegate) {
  197. this.token("*");
  198. }
  199. if (node.argument) {
  200. this.space();
  201. this.printTerminatorless(node.argument, node, false);
  202. }
  203. }
  204. function EmptyStatement() {
  205. this.semicolon(true);
  206. }
  207. function ExpressionStatement(node) {
  208. this.print(node.expression, node);
  209. this.semicolon();
  210. }
  211. function AssignmentPattern(node) {
  212. this.print(node.left, node);
  213. if (node.left.optional) this.token("?");
  214. this.print(node.left.typeAnnotation, node);
  215. this.space();
  216. this.token("=");
  217. this.space();
  218. this.print(node.right, node);
  219. }
  220. function AssignmentExpression(node, parent) {
  221. const parens = this.inForStatementInitCounter && node.operator === "in" && !n.needsParens(node, parent);
  222. if (parens) {
  223. this.token("(");
  224. }
  225. this.print(node.left, node);
  226. this.space();
  227. if (node.operator === "in" || node.operator === "instanceof") {
  228. this.word(node.operator);
  229. } else {
  230. this.token(node.operator);
  231. }
  232. this.space();
  233. this.print(node.right, node);
  234. if (parens) {
  235. this.token(")");
  236. }
  237. }
  238. function BindExpression(node) {
  239. this.print(node.object, node);
  240. this.token("::");
  241. this.print(node.callee, node);
  242. }
  243. function MemberExpression(node) {
  244. this.print(node.object, node);
  245. if (!node.computed && isMemberExpression(node.property)) {
  246. throw new TypeError("Got a MemberExpression for MemberExpression property");
  247. }
  248. let computed = node.computed;
  249. if (isLiteral(node.property) && typeof node.property.value === "number") {
  250. computed = true;
  251. }
  252. if (computed) {
  253. this.token("[");
  254. this.print(node.property, node);
  255. this.token("]");
  256. } else {
  257. this.token(".");
  258. this.print(node.property, node);
  259. }
  260. }
  261. function MetaProperty(node) {
  262. this.print(node.meta, node);
  263. this.token(".");
  264. this.print(node.property, node);
  265. }
  266. function PrivateName(node) {
  267. this.token("#");
  268. this.print(node.id, node);
  269. }
  270. function V8IntrinsicIdentifier(node) {
  271. this.token("%");
  272. this.word(node.name);
  273. }
  274. function ModuleExpression(node) {
  275. this.word("module");
  276. this.space();
  277. this.token("{");
  278. if (node.body.body.length === 0) {
  279. this.token("}");
  280. } else {
  281. this.newline();
  282. this.printSequence(node.body.body, node, {
  283. indent: true
  284. });
  285. this.rightBrace();
  286. }
  287. }