populate.js 4.5 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131
  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.default = populatePlaceholders;
  6. function t() {
  7. var data = _interopRequireWildcard(require("@babel/types"));
  8. t = function t() {
  9. return data;
  10. };
  11. return data;
  12. }
  13. function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
  14. function populatePlaceholders(metadata, replacements) {
  15. var ast = t().cloneNode(metadata.ast);
  16. if (replacements) {
  17. metadata.placeholders.forEach(function (placeholder) {
  18. if (!Object.prototype.hasOwnProperty.call(replacements, placeholder.name)) {
  19. var placeholderName = placeholder.name;
  20. throw new Error("Error: No substitution given for \"" + placeholderName + "\". If this is not meant to be a\n placeholder you may want to consider passing one of the following options to @babel/template:\n - { placeholderPattern: false, placeholderWhitelist: new Set(['" + placeholderName + "'])}\n - { placeholderPattern: /^" + placeholderName + "$/ }");
  21. }
  22. });
  23. Object.keys(replacements).forEach(function (key) {
  24. if (!metadata.placeholderNames.has(key)) {
  25. throw new Error("Unknown substitution \"" + key + "\" given");
  26. }
  27. });
  28. }
  29. metadata.placeholders.slice().reverse().forEach(function (placeholder) {
  30. try {
  31. applyReplacement(placeholder, ast, replacements && replacements[placeholder.name] || null);
  32. } catch (e) {
  33. e.message = "@babel/template placeholder \"" + placeholder.name + "\": " + e.message;
  34. throw e;
  35. }
  36. });
  37. return ast;
  38. }
  39. function applyReplacement(placeholder, ast, replacement) {
  40. if (placeholder.isDuplicate) {
  41. if (Array.isArray(replacement)) {
  42. replacement = replacement.map(function (node) {
  43. return t().cloneNode(node);
  44. });
  45. } else if (typeof replacement === "object") {
  46. replacement = t().cloneNode(replacement);
  47. }
  48. }
  49. var _placeholder$resolve = placeholder.resolve(ast),
  50. parent = _placeholder$resolve.parent,
  51. key = _placeholder$resolve.key,
  52. index = _placeholder$resolve.index;
  53. if (placeholder.type === "string") {
  54. if (typeof replacement === "string") {
  55. replacement = t().stringLiteral(replacement);
  56. }
  57. if (!replacement || !t().isStringLiteral(replacement)) {
  58. throw new Error("Expected string substitution");
  59. }
  60. } else if (placeholder.type === "statement") {
  61. if (index === undefined) {
  62. if (!replacement) {
  63. replacement = t().emptyStatement();
  64. } else if (Array.isArray(replacement)) {
  65. replacement = t().blockStatement(replacement);
  66. } else if (typeof replacement === "string") {
  67. replacement = t().expressionStatement(t().identifier(replacement));
  68. } else if (!t().isStatement(replacement)) {
  69. replacement = t().expressionStatement(replacement);
  70. }
  71. } else {
  72. if (replacement && !Array.isArray(replacement)) {
  73. if (typeof replacement === "string") {
  74. replacement = t().identifier(replacement);
  75. }
  76. if (!t().isStatement(replacement)) {
  77. replacement = t().expressionStatement(replacement);
  78. }
  79. }
  80. }
  81. } else if (placeholder.type === "param") {
  82. if (typeof replacement === "string") {
  83. replacement = t().identifier(replacement);
  84. }
  85. if (index === undefined) throw new Error("Assertion failure.");
  86. } else {
  87. if (typeof replacement === "string") {
  88. replacement = t().identifier(replacement);
  89. }
  90. if (Array.isArray(replacement)) {
  91. throw new Error("Cannot replace single expression with an array.");
  92. }
  93. }
  94. if (index === undefined) {
  95. t().validate(parent, key, replacement);
  96. parent[key] = replacement;
  97. } else {
  98. var items = parent[key].slice();
  99. if (placeholder.type === "statement" || placeholder.type === "param") {
  100. if (replacement == null) {
  101. items.splice(index, 1);
  102. } else if (Array.isArray(replacement)) {
  103. items.splice.apply(items, [index, 1].concat(replacement));
  104. } else {
  105. items[index] = replacement;
  106. }
  107. } else {
  108. items[index] = replacement;
  109. }
  110. t().validate(parent, key, items);
  111. parent[key] = items;
  112. }
  113. }