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					169 lines
				
				4.4 KiB
			
		
		
			
		
	
	
					169 lines
				
				4.4 KiB
			| 
											3 years ago
										 | "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; | ||
|  |   } | ||
|  | } | ||
|  | 
 | ||
|  | //# sourceMappingURL=parse.js.map
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