| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = populatePlaceholders; |
| |
| var _t = require("@babel/types"); |
| |
| const { |
| blockStatement, |
| cloneNode, |
| emptyStatement, |
| expressionStatement, |
| identifier, |
| isStatement, |
| isStringLiteral, |
| stringLiteral, |
| validate |
| } = _t; |
| |
| function populatePlaceholders(metadata, replacements) { |
| const ast = cloneNode(metadata.ast); |
| |
| if (replacements) { |
| metadata.placeholders.forEach(placeholder => { |
| if (!Object.prototype.hasOwnProperty.call(replacements, placeholder.name)) { |
| const placeholderName = placeholder.name; |
| throw new Error(`Error: No substitution given for "${placeholderName}". If this is not meant to be a |
| placeholder you may want to consider passing one of the following options to @babel/template: |
| - { placeholderPattern: false, placeholderWhitelist: new Set(['${placeholderName}'])} |
| - { placeholderPattern: /^${placeholderName}$/ }`); |
| } |
| }); |
| Object.keys(replacements).forEach(key => { |
| if (!metadata.placeholderNames.has(key)) { |
| throw new Error(`Unknown substitution "${key}" given`); |
| } |
| }); |
| } |
| |
| metadata.placeholders.slice().reverse().forEach(placeholder => { |
| try { |
| applyReplacement(placeholder, ast, replacements && replacements[placeholder.name] || null); |
| } catch (e) { |
| e.message = `@babel/template placeholder "${placeholder.name}": ${e.message}`; |
| throw e; |
| } |
| }); |
| return ast; |
| } |
| |
| function applyReplacement(placeholder, ast, replacement) { |
| if (placeholder.isDuplicate) { |
| if (Array.isArray(replacement)) { |
| replacement = replacement.map(node => cloneNode(node)); |
| } else if (typeof replacement === "object") { |
| replacement = cloneNode(replacement); |
| } |
| } |
| |
| const { |
| parent, |
| key, |
| index |
| } = placeholder.resolve(ast); |
| |
| if (placeholder.type === "string") { |
| if (typeof replacement === "string") { |
| replacement = stringLiteral(replacement); |
| } |
| |
| if (!replacement || !isStringLiteral(replacement)) { |
| throw new Error("Expected string substitution"); |
| } |
| } else if (placeholder.type === "statement") { |
| if (index === undefined) { |
| if (!replacement) { |
| replacement = emptyStatement(); |
| } else if (Array.isArray(replacement)) { |
| replacement = blockStatement(replacement); |
| } else if (typeof replacement === "string") { |
| replacement = expressionStatement(identifier(replacement)); |
| } else if (!isStatement(replacement)) { |
| replacement = expressionStatement(replacement); |
| } |
| } else { |
| if (replacement && !Array.isArray(replacement)) { |
| if (typeof replacement === "string") { |
| replacement = identifier(replacement); |
| } |
| |
| if (!isStatement(replacement)) { |
| replacement = expressionStatement(replacement); |
| } |
| } |
| } |
| } else if (placeholder.type === "param") { |
| if (typeof replacement === "string") { |
| replacement = identifier(replacement); |
| } |
| |
| if (index === undefined) throw new Error("Assertion failure."); |
| } else { |
| if (typeof replacement === "string") { |
| replacement = identifier(replacement); |
| } |
| |
| if (Array.isArray(replacement)) { |
| throw new Error("Cannot replace single expression with an array."); |
| } |
| } |
| |
| if (index === undefined) { |
| validate(parent, key, replacement); |
| parent[key] = replacement; |
| } else { |
| const items = parent[key].slice(); |
| |
| if (placeholder.type === "statement" || placeholder.type === "param") { |
| if (replacement == null) { |
| items.splice(index, 1); |
| } else if (Array.isArray(replacement)) { |
| items.splice(index, 1, ...replacement); |
| } else { |
| items[index] = replacement; |
| } |
| } else { |
| items[index] = replacement; |
| } |
| |
| validate(parent, key, items); |
| parent[key] = items; |
| } |
| } |