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Diffstat (limited to 'node_modules/webpack/lib/RuleSet.js')
| -rw-r--r-- | node_modules/webpack/lib/RuleSet.js | 567 |
1 files changed, 567 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/RuleSet.js b/node_modules/webpack/lib/RuleSet.js new file mode 100644 index 0000000..7ed8eba --- /dev/null +++ b/node_modules/webpack/lib/RuleSet.js @@ -0,0 +1,567 @@ +/* + MIT License http://www.opensource.org/licenses/mit-license.php + Author Tobias Koppers @sokra +*/ +/* +<rules>: <rule> +<rules>: [<rule>] +<rule>: { + resource: { + test: <condition>, + include: <condition>, + exclude: <condition>, + }, + resource: <condition>, -> resource.test + test: <condition>, -> resource.test + include: <condition>, -> resource.include + exclude: <condition>, -> resource.exclude + resourceQuery: <condition>, + compiler: <condition>, + issuer: <condition>, + use: "loader", -> use[0].loader + loader: <>, -> use[0].loader + loaders: <>, -> use + options: {}, -> use[0].options, + query: {}, -> options + parser: {}, + use: [ + "loader" -> use[x].loader + ], + use: [ + { + loader: "loader", + options: {} + } + ], + rules: [ + <rule> + ], + oneOf: [ + <rule> + ] +} + +<condition>: /regExp/ +<condition>: function(arg) {} +<condition>: "starting" +<condition>: [<condition>] // or +<condition>: { and: [<condition>] } +<condition>: { or: [<condition>] } +<condition>: { not: [<condition>] } +<condition>: { test: <condition>, include: <condition>, exclude: <condition> } + + +normalized: + +{ + resource: function(), + resourceQuery: function(), + compiler: function(), + issuer: function(), + use: [ + { + loader: string, + options: string, + <any>: <any> + } + ], + rules: [<rule>], + oneOf: [<rule>], + <any>: <any>, +} + +*/ + +"use strict"; + +const notMatcher = matcher => { + return str => { + return !matcher(str); + }; +}; + +const orMatcher = items => { + return str => { + for (let i = 0; i < items.length; i++) { + if (items[i](str)) return true; + } + return false; + }; +}; + +const andMatcher = items => { + return str => { + for (let i = 0; i < items.length; i++) { + if (!items[i](str)) return false; + } + return true; + }; +}; + +module.exports = class RuleSet { + constructor(rules) { + this.references = Object.create(null); + this.rules = RuleSet.normalizeRules(rules, this.references, "ref-"); + } + + static normalizeRules(rules, refs, ident) { + if (Array.isArray(rules)) { + return rules.map((rule, idx) => { + return RuleSet.normalizeRule(rule, refs, `${ident}-${idx}`); + }); + } else if (rules) { + return [RuleSet.normalizeRule(rules, refs, ident)]; + } else { + return []; + } + } + + static normalizeRule(rule, refs, ident) { + if (typeof rule === "string") { + return { + use: [ + { + loader: rule + } + ] + }; + } + if (!rule) { + throw new Error("Unexcepted null when object was expected as rule"); + } + if (typeof rule !== "object") { + throw new Error( + "Unexcepted " + + typeof rule + + " when object was expected as rule (" + + rule + + ")" + ); + } + + const newRule = {}; + let useSource; + let resourceSource; + let condition; + + const checkUseSource = newSource => { + if (useSource && useSource !== newSource) { + throw new Error( + RuleSet.buildErrorMessage( + rule, + new Error( + "Rule can only have one result source (provided " + + newSource + + " and " + + useSource + + ")" + ) + ) + ); + } + useSource = newSource; + }; + + const checkResourceSource = newSource => { + if (resourceSource && resourceSource !== newSource) { + throw new Error( + RuleSet.buildErrorMessage( + rule, + new Error( + "Rule can only have one resource source (provided " + + newSource + + " and " + + resourceSource + + ")" + ) + ) + ); + } + resourceSource = newSource; + }; + + if (rule.test || rule.include || rule.exclude) { + checkResourceSource("test + include + exclude"); + condition = { + test: rule.test, + include: rule.include, + exclude: rule.exclude + }; + try { + newRule.resource = RuleSet.normalizeCondition(condition); + } catch (error) { + throw new Error(RuleSet.buildErrorMessage(condition, error)); + } + } + + if (rule.resource) { + checkResourceSource("resource"); + try { + newRule.resource = RuleSet.normalizeCondition(rule.resource); + } catch (error) { + throw new Error(RuleSet.buildErrorMessage(rule.resource, error)); + } + } + + if (rule.realResource) { + try { + newRule.realResource = RuleSet.normalizeCondition(rule.realResource); + } catch (error) { + throw new Error(RuleSet.buildErrorMessage(rule.realResource, error)); + } + } + + if (rule.resourceQuery) { + try { + newRule.resourceQuery = RuleSet.normalizeCondition(rule.resourceQuery); + } catch (error) { + throw new Error(RuleSet.buildErrorMessage(rule.resourceQuery, error)); + } + } + + if (rule.compiler) { + try { + newRule.compiler = RuleSet.normalizeCondition(rule.compiler); + } catch (error) { + throw new Error(RuleSet.buildErrorMessage(rule.compiler, error)); + } + } + + if (rule.issuer) { + try { + newRule.issuer = RuleSet.normalizeCondition(rule.issuer); + } catch (error) { + throw new Error(RuleSet.buildErrorMessage(rule.issuer, error)); + } + } + + if (rule.loader && rule.loaders) { + throw new Error( + RuleSet.buildErrorMessage( + rule, + new Error( + "Provided loader and loaders for rule (use only one of them)" + ) + ) + ); + } + + const loader = rule.loaders || rule.loader; + if (typeof loader === "string" && !rule.options && !rule.query) { + checkUseSource("loader"); + newRule.use = RuleSet.normalizeUse(loader.split("!"), ident); + } else if (typeof loader === "string" && (rule.options || rule.query)) { + checkUseSource("loader + options/query"); + newRule.use = RuleSet.normalizeUse( + { + loader: loader, + options: rule.options, + query: rule.query + }, + ident + ); + } else if (loader && (rule.options || rule.query)) { + throw new Error( + RuleSet.buildErrorMessage( + rule, + new Error( + "options/query cannot be used with loaders (use options for each array item)" + ) + ) + ); + } else if (loader) { + checkUseSource("loaders"); + newRule.use = RuleSet.normalizeUse(loader, ident); + } else if (rule.options || rule.query) { + throw new Error( + RuleSet.buildErrorMessage( + rule, + new Error( + "options/query provided without loader (use loader + options)" + ) + ) + ); + } + + if (rule.use) { + checkUseSource("use"); + newRule.use = RuleSet.normalizeUse(rule.use, ident); + } + + if (rule.rules) { + newRule.rules = RuleSet.normalizeRules( + rule.rules, + refs, + `${ident}-rules` + ); + } + + if (rule.oneOf) { + newRule.oneOf = RuleSet.normalizeRules( + rule.oneOf, + refs, + `${ident}-oneOf` + ); + } + + const keys = Object.keys(rule).filter(key => { + return ![ + "resource", + "resourceQuery", + "compiler", + "test", + "include", + "exclude", + "issuer", + "loader", + "options", + "query", + "loaders", + "use", + "rules", + "oneOf" + ].includes(key); + }); + for (const key of keys) { + newRule[key] = rule[key]; + } + + if (Array.isArray(newRule.use)) { + for (const item of newRule.use) { + if (item.ident) { + refs[item.ident] = item.options; + } + } + } + + return newRule; + } + + static buildErrorMessage(condition, error) { + const conditionAsText = JSON.stringify( + condition, + (key, value) => { + return value === undefined ? "undefined" : value; + }, + 2 + ); + return error.message + " in " + conditionAsText; + } + + static normalizeUse(use, ident) { + if (typeof use === "function") { + return data => RuleSet.normalizeUse(use(data), ident); + } + if (Array.isArray(use)) { + return use + .map((item, idx) => RuleSet.normalizeUse(item, `${ident}-${idx}`)) + .reduce((arr, items) => arr.concat(items), []); + } + return [RuleSet.normalizeUseItem(use, ident)]; + } + + static normalizeUseItemString(useItemString) { + const idx = useItemString.indexOf("?"); + if (idx >= 0) { + return { + loader: useItemString.substr(0, idx), + options: useItemString.substr(idx + 1) + }; + } + return { + loader: useItemString, + options: undefined + }; + } + + static normalizeUseItem(item, ident) { + if (typeof item === "string") { + return RuleSet.normalizeUseItemString(item); + } + + const newItem = {}; + + if (item.options && item.query) { + throw new Error("Provided options and query in use"); + } + + if (!item.loader) { + throw new Error("No loader specified"); + } + + newItem.options = item.options || item.query; + + if (typeof newItem.options === "object" && newItem.options) { + if (newItem.options.ident) { + newItem.ident = newItem.options.ident; + } else { + newItem.ident = ident; + } + } + + const keys = Object.keys(item).filter(function(key) { + return !["options", "query"].includes(key); + }); + + for (const key of keys) { + newItem[key] = item[key]; + } + + return newItem; + } + + static normalizeCondition(condition) { + if (!condition) throw new Error("Expected condition but got falsy value"); + if (typeof condition === "string") { + return str => str.indexOf(condition) === 0; + } + if (typeof condition === "function") { + return condition; + } + if (condition instanceof RegExp) { + return condition.test.bind(condition); + } + if (Array.isArray(condition)) { + const items = condition.map(c => RuleSet.normalizeCondition(c)); + return orMatcher(items); + } + if (typeof condition !== "object") { + throw Error( + "Unexcepted " + + typeof condition + + " when condition was expected (" + + condition + + ")" + ); + } + + const matchers = []; + Object.keys(condition).forEach(key => { + const value = condition[key]; + switch (key) { + case "or": + case "include": + case "test": + if (value) matchers.push(RuleSet.normalizeCondition(value)); + break; + case "and": + if (value) { + const items = value.map(c => RuleSet.normalizeCondition(c)); + matchers.push(andMatcher(items)); + } + break; + case "not": + case "exclude": + if (value) { + const matcher = RuleSet.normalizeCondition(value); + matchers.push(notMatcher(matcher)); + } + break; + default: + throw new Error("Unexcepted property " + key + " in condition"); + } + }); + if (matchers.length === 0) { + throw new Error("Excepted condition but got " + condition); + } + if (matchers.length === 1) { + return matchers[0]; + } + return andMatcher(matchers); + } + + exec(data) { + const result = []; + this._run( + data, + { + rules: this.rules + }, + result + ); + return result; + } + + _run(data, rule, result) { + // test conditions + if (rule.resource && !data.resource) return false; + if (rule.realResource && !data.realResource) return false; + if (rule.resourceQuery && !data.resourceQuery) return false; + if (rule.compiler && !data.compiler) return false; + if (rule.issuer && !data.issuer) return false; + if (rule.resource && !rule.resource(data.resource)) return false; + if (rule.realResource && !rule.realResource(data.realResource)) + return false; + if (data.issuer && rule.issuer && !rule.issuer(data.issuer)) return false; + if ( + data.resourceQuery && + rule.resourceQuery && + !rule.resourceQuery(data.resourceQuery) + ) { + return false; + } + if (data.compiler && rule.compiler && !rule.compiler(data.compiler)) { + return false; + } + + // apply + const keys = Object.keys(rule).filter(key => { + return ![ + "resource", + "realResource", + "resourceQuery", + "compiler", + "issuer", + "rules", + "oneOf", + "use", + "enforce" + ].includes(key); + }); + for (const key of keys) { + result.push({ + type: key, + value: rule[key] + }); + } + + if (rule.use) { + const process = use => { + if (typeof use === "function") { + process(use(data)); + } else if (Array.isArray(use)) { + use.forEach(process); + } else { + result.push({ + type: "use", + value: use, + enforce: rule.enforce + }); + } + }; + process(rule.use); + } + + if (rule.rules) { + for (let i = 0; i < rule.rules.length; i++) { + this._run(data, rule.rules[i], result); + } + } + + if (rule.oneOf) { + for (let i = 0; i < rule.oneOf.length; i++) { + if (this._run(data, rule.oneOf[i], result)) break; + } + } + + return true; + } + + findOptionsByIdent(ident) { + const options = this.references[ident]; + if (!options) { + throw new Error("Can't find options with ident '" + ident + "'"); + } + return options; + } +}; |