forked from zhurui/management
568 lines
12 KiB
JavaScript
568 lines
12 KiB
JavaScript
/*
|
|
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;
|
|
}
|
|
};
|