445 lines
11 KiB
JavaScript
445 lines
11 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";
|
||
|
|
|
||
|
|
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 + ")");
|
||
|
|
|
||
|
|
let newRule = {};
|
||
|
|
let useSource;
|
||
|
|
let resourceSource;
|
||
|
|
let condition;
|
||
|
|
|
||
|
|
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.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"].indexOf(key) < 0;
|
||
|
|
});
|
||
|
|
keys.forEach((key) => {
|
||
|
|
newRule[key] = rule[key];
|
||
|
|
});
|
||
|
|
|
||
|
|
function 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
function 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(Array.isArray(newRule.use)) {
|
||
|
|
newRule.use.forEach((item) => {
|
||
|
|
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(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 normalizeUseItemFunction(use, data) {
|
||
|
|
const result = use(data);
|
||
|
|
if(typeof result === "string") {
|
||
|
|
return RuleSet.normalizeUseItem(result);
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
static normalizeUseItemString(useItemString) {
|
||
|
|
const idx = useItemString.indexOf("?");
|
||
|
|
if(idx >= 0) {
|
||
|
|
return {
|
||
|
|
loader: useItemString.substr(0, idx),
|
||
|
|
options: useItemString.substr(idx + 1)
|
||
|
|
};
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
loader: useItemString
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
static normalizeUseItem(item, ident) {
|
||
|
|
if(typeof item === "function")
|
||
|
|
return item;
|
||
|
|
|
||
|
|
if(typeof item === "string") {
|
||
|
|
return RuleSet.normalizeUseItemString(item);
|
||
|
|
}
|
||
|
|
|
||
|
|
let 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"].indexOf(key) < 0;
|
||
|
|
});
|
||
|
|
|
||
|
|
keys.forEach(function(key) {
|
||
|
|
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 + ")");
|
||
|
|
|
||
|
|
let 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.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(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", "resourceQuery", "compiler", "issuer", "rules", "oneOf", "use", "enforce"].indexOf(key) < 0;
|
||
|
|
});
|
||
|
|
keys.forEach((key) => {
|
||
|
|
result.push({
|
||
|
|
type: key,
|
||
|
|
value: rule[key]
|
||
|
|
});
|
||
|
|
});
|
||
|
|
|
||
|
|
if(rule.use) {
|
||
|
|
rule.use.forEach((use) => {
|
||
|
|
result.push({
|
||
|
|
type: "use",
|
||
|
|
value: typeof use === "function" ? RuleSet.normalizeUseItemFunction(use, data) : use,
|
||
|
|
enforce: rule.enforce
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
function notMatcher(matcher) {
|
||
|
|
return function(str) {
|
||
|
|
return !matcher(str);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
function orMatcher(items) {
|
||
|
|
return function(str) {
|
||
|
|
for(let i = 0; i < items.length; i++) {
|
||
|
|
if(items[i](str))
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
function andMatcher(items) {
|
||
|
|
return function(str) {
|
||
|
|
for(let i = 0; i < items.length; i++) {
|
||
|
|
if(!items[i](str))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
};
|
||
|
|
}
|