| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = parseAndBuildMetadata; |
| |
| var _t = require("@babel/types"); |
| |
| var _parser = require("@babel/parser"); |
| |
| var _codeFrame = require("@babel/code-frame"); |
| |
| const { |
| isCallExpression, |
| isExpressionStatement, |
| isFunction, |
| isIdentifier, |
| isJSXIdentifier, |
| isNewExpression, |
| isPlaceholder, |
| isStatement, |
| isStringLiteral, |
| removePropertiesDeep, |
| traverse |
| } = _t; |
| const PATTERN = /^[_$A-Z0-9]+$/; |
| |
| function parseAndBuildMetadata(formatter, code, opts) { |
| const { |
| placeholderWhitelist, |
| placeholderPattern, |
| preserveComments, |
| syntacticPlaceholders |
| } = opts; |
| const ast = parseWithCodeFrame(code, opts.parser, syntacticPlaceholders); |
| removePropertiesDeep(ast, { |
| preserveComments |
| }); |
| formatter.validate(ast); |
| const syntactic = { |
| placeholders: [], |
| placeholderNames: new Set() |
| }; |
| const legacy = { |
| placeholders: [], |
| placeholderNames: new Set() |
| }; |
| const isLegacyRef = { |
| value: undefined |
| }; |
| traverse(ast, placeholderVisitorHandler, { |
| syntactic, |
| legacy, |
| isLegacyRef, |
| placeholderWhitelist, |
| placeholderPattern, |
| syntacticPlaceholders |
| }); |
| return Object.assign({ |
| ast |
| }, isLegacyRef.value ? legacy : syntactic); |
| } |
| |
| function placeholderVisitorHandler(node, ancestors, state) { |
| var _state$placeholderWhi; |
| |
| let name; |
| |
| if (isPlaceholder(node)) { |
| if (state.syntacticPlaceholders === false) { |
| throw new Error("%%foo%%-style placeholders can't be used when " + "'.syntacticPlaceholders' is false."); |
| } else { |
| name = node.name.name; |
| state.isLegacyRef.value = false; |
| } |
| } else if (state.isLegacyRef.value === false || state.syntacticPlaceholders) { |
| return; |
| } else if (isIdentifier(node) || isJSXIdentifier(node)) { |
| name = node.name; |
| state.isLegacyRef.value = true; |
| } else if (isStringLiteral(node)) { |
| name = node.value; |
| state.isLegacyRef.value = true; |
| } else { |
| return; |
| } |
| |
| if (!state.isLegacyRef.value && (state.placeholderPattern != null || state.placeholderWhitelist != null)) { |
| throw new Error("'.placeholderWhitelist' and '.placeholderPattern' aren't compatible" + " with '.syntacticPlaceholders: true'"); |
| } |
| |
| if (state.isLegacyRef.value && (state.placeholderPattern === false || !(state.placeholderPattern || PATTERN).test(name)) && !((_state$placeholderWhi = state.placeholderWhitelist) != null && _state$placeholderWhi.has(name))) { |
| return; |
| } |
| |
| ancestors = ancestors.slice(); |
| const { |
| node: parent, |
| key |
| } = ancestors[ancestors.length - 1]; |
| let type; |
| |
| if (isStringLiteral(node) || isPlaceholder(node, { |
| expectedNode: "StringLiteral" |
| })) { |
| type = "string"; |
| } else if (isNewExpression(parent) && key === "arguments" || isCallExpression(parent) && key === "arguments" || isFunction(parent) && key === "params") { |
| type = "param"; |
| } else if (isExpressionStatement(parent) && !isPlaceholder(node)) { |
| type = "statement"; |
| ancestors = ancestors.slice(0, -1); |
| } else if (isStatement(node) && isPlaceholder(node)) { |
| type = "statement"; |
| } else { |
| type = "other"; |
| } |
| |
| const { |
| placeholders, |
| placeholderNames |
| } = state.isLegacyRef.value ? state.legacy : state.syntactic; |
| placeholders.push({ |
| name, |
| type, |
| resolve: ast => resolveAncestors(ast, ancestors), |
| isDuplicate: placeholderNames.has(name) |
| }); |
| placeholderNames.add(name); |
| } |
| |
| function resolveAncestors(ast, ancestors) { |
| let parent = ast; |
| |
| for (let i = 0; i < ancestors.length - 1; i++) { |
| const { |
| key, |
| index |
| } = ancestors[i]; |
| |
| if (index === undefined) { |
| parent = parent[key]; |
| } else { |
| parent = parent[key][index]; |
| } |
| } |
| |
| const { |
| key, |
| index |
| } = ancestors[ancestors.length - 1]; |
| return { |
| parent, |
| key, |
| index |
| }; |
| } |
| |
| function parseWithCodeFrame(code, parserOpts, syntacticPlaceholders) { |
| const plugins = (parserOpts.plugins || []).slice(); |
| |
| if (syntacticPlaceholders !== false) { |
| plugins.push("placeholders"); |
| } |
| |
| parserOpts = Object.assign({ |
| allowReturnOutsideFunction: true, |
| allowSuperOutsideMethod: true, |
| sourceType: "module" |
| }, parserOpts, { |
| plugins |
| }); |
| |
| try { |
| return (0, _parser.parse)(code, parserOpts); |
| } catch (err) { |
| const loc = err.loc; |
| |
| if (loc) { |
| err.message += "\n" + (0, _codeFrame.codeFrameColumns)(code, { |
| start: loc |
| }); |
| err.code = "BABEL_TEMPLATE_PARSE_ERROR"; |
| } |
| |
| throw err; |
| } |
| } |