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Diffusion Ant (feature/nursery) Code

ant/examples/rou3/index.js
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index.js
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const NullProtoObj = /* @__PURE__ */ (() => {
const e = function () {};
return ((e.prototype = Object.create(null)), Object.freeze(e.prototype), e);
})();
function createRouter() {
return {
root: { key: '' },
static: new NullProtoObj()
};
}
function splitPath(path) {
const [_, ...s] = path.split('/');
return s[s.length - 1] === '' ? s.slice(0, -1) : s;
}
function getMatchParams(segments, paramsMap) {
const params = new NullProtoObj();
for (const [index, name] of paramsMap) {
const segment = index < 0 ? segments.slice(-(index + 1)).join('/') : segments[index];
if (typeof name === 'string') params[name] = segment;
else {
const match = segment.match(name);
if (match) for (const key in match.groups) params[key] = match.groups[key];
}
}
return params;
}
function addRoute(ctx, method = '', path, data) {
method = method.toUpperCase();
if (path.charCodeAt(0) !== 47) path = `/${path}`;
path = path.replace(/\\:/g, '%3A');
const segments = splitPath(path);
let node = ctx.root;
let _unnamedParamIndex = 0;
const paramsMap = [];
const paramsRegexp = [];
for (let i = 0; i < segments.length; i++) {
let segment = segments[i];
if (segment.startsWith('**')) {
if (!node.wildcard) node.wildcard = { key: '**' };
node = node.wildcard;
paramsMap.push([-(i + 1), segment.split(':')[1] || '_', segment.length === 2]);
break;
}
if (segment === '*' || segment.includes(':')) {
if (!node.param) node.param = { key: '*' };
node = node.param;
if (segment === '*') paramsMap.push([i, `_${_unnamedParamIndex++}`, true]);
else if (segment.includes(':', 1)) {
const regexp = getParamRegexp(segment);
paramsRegexp[i] = regexp;
node.hasRegexParam = true;
paramsMap.push([i, regexp, false]);
} else paramsMap.push([i, segment.slice(1), false]);
continue;
}
if (segment === '\\*') segment = segments[i] = '*';
else if (segment === '\\*\\*') segment = segments[i] = '**';
const child = node.static?.[segment];
if (child) node = child;
else {
const staticNode = { key: segment };
if (!node.static) node.static = new NullProtoObj();
node.static[segment] = staticNode;
node = staticNode;
}
}
const hasParams = paramsMap.length > 0;
if (!node.methods) node.methods = new NullProtoObj();
node.methods[method] ??= [];
node.methods[method].push({
data: data || null,
paramsRegexp,
paramsMap: hasParams ? paramsMap : void 0
});
if (!hasParams) ctx.static['/' + segments.join('/')] = node;
}
function getParamRegexp(segment) {
const regex = segment.replace(/:(\w+)/g, (_, id) => `(?<${id}>[^/]+)`).replace(/\./g, '\\.');
return /* @__PURE__ */ new RegExp(`^${regex}$`);
}
function findRoute(ctx, method = '', path, opts) {
if (path.charCodeAt(path.length - 1) === 47) path = path.slice(0, -1);
const staticNode = ctx.static[path];
if (staticNode && staticNode.methods) {
const staticMatch = staticNode.methods[method] || staticNode.methods[''];
if (staticMatch !== void 0) return staticMatch[0];
}
const segments = splitPath(path);
const match = _lookupTree(ctx, ctx.root, method, segments, 0)?.[0];
if (match === void 0) return;
if (opts?.params === false) return match;
return {
data: match.data,
params: match.paramsMap ? getMatchParams(segments, match.paramsMap) : void 0
};
}
function _lookupTree(ctx, node, method, segments, index) {
if (index === segments.length) {
if (node.methods) {
const match = node.methods[method] || node.methods[''];
if (match) return match;
}
if (node.param && node.param.methods) {
const match = node.param.methods[method] || node.param.methods[''];
if (match) {
const pMap = match[0].paramsMap;
if (pMap?.[pMap?.length - 1]?.[2]) return match;
}
}
if (node.wildcard && node.wildcard.methods) {
const match = node.wildcard.methods[method] || node.wildcard.methods[''];
if (match) {
const pMap = match[0].paramsMap;
if (pMap?.[pMap?.length - 1]?.[2]) return match;
}
}
return;
}
const segment = segments[index];
if (node.static) {
const staticChild = node.static[segment];
if (staticChild) {
const match = _lookupTree(ctx, staticChild, method, segments, index + 1);
if (match) return match;
}
}
if (node.param) {
const match = _lookupTree(ctx, node.param, method, segments, index + 1);
if (match) {
if (node.param.hasRegexParam) {
const exactMatch = match.find(m => m.paramsRegexp[index]?.test(segment)) || match.find(m => !m.paramsRegexp[index]);
return exactMatch ? [exactMatch] : void 0;
}
return match;
}
}
if (node.wildcard && node.wildcard.methods) return node.wildcard.methods[method] || node.wildcard.methods[''];
}
function removeRoute(ctx, method, path) {
const segments = splitPath(path);
return _remove(ctx.root, method || '', segments, 0);
}
function _remove(node, method, segments, index) {
if (index === segments.length) {
if (node.methods && method in node.methods) {
delete node.methods[method];
if (Object.keys(node.methods).length === 0) node.methods = void 0;
}
return;
}
const segment = segments[index];
if (segment === '*') {
if (node.param) {
_remove(node.param, method, segments, index + 1);
if (_isEmptyNode(node.param)) node.param = void 0;
}
return;
}
if (segment.startsWith('**')) {
if (node.wildcard) {
_remove(node.wildcard, method, segments, index + 1);
if (_isEmptyNode(node.wildcard)) node.wildcard = void 0;
}
return;
}
const childNode = node.static?.[segment];
if (childNode) {
_remove(childNode, method, segments, index + 1);
if (_isEmptyNode(childNode)) {
delete node.static[segment];
if (Object.keys(node.static).length === 0) node.static = void 0;
}
}
}
function _isEmptyNode(node) {
return node.methods === void 0 && node.static === void 0 && node.param === void 0 && node.wildcard === void 0;
}
function findAllRoutes(ctx, method = '', path, opts) {
if (path.charCodeAt(path.length - 1) === 47) path = path.slice(0, -1);
const segments = splitPath(path);
const matches = _findAll(ctx, ctx.root, method, segments, 0);
if (opts?.params === false) return matches;
return matches.map(m => {
return {
data: m.data,
params: m.paramsMap ? getMatchParams(segments, m.paramsMap) : void 0
};
});
}
function _findAll(ctx, node, method, segments, index, matches = []) {
const segment = segments[index];
if (node.wildcard && node.wildcard.methods) {
const match = node.wildcard.methods[method] || node.wildcard.methods[''];
if (match) matches.push(...match);
}
if (node.param) {
_findAll(ctx, node.param, method, segments, index + 1, matches);
if (index === segments.length && node.param.methods) {
const match = node.param.methods[method] || node.param.methods[''];
if (match) {
const pMap = match[0].paramsMap;
if (pMap?.[pMap?.length - 1]?.[2]) matches.push(...match);
}
}
}
const staticChild = node.static?.[segment];
if (staticChild) _findAll(ctx, staticChild, method, segments, index + 1, matches);
if (index === segments.length && node.methods) {
const match = node.methods[method] || node.methods[''];
if (match) matches.push(...match);
}
return matches;
}
function routeToRegExp(route = '/') {
const reSegments = [];
let idCtr = 0;
for (const segment of route.split('/')) {
if (!segment) continue;
if (segment === '*') reSegments.push(`(?<_${idCtr++}>[^/]*)`);
else if (segment.startsWith('**')) reSegments.push(segment === '**' ? '?(?<_>.*)' : `?(?<${segment.slice(3)}>.+)`);
else if (segment.includes(':')) reSegments.push(segment.replace(/:(\w+)/g, (_, id) => `(?<${id}>[^/]+)`).replace(/\./g, '\\.'));
else reSegments.push(segment);
}
return /* @__PURE__ */ new RegExp(`^/${reSegments.join('/')}/?$`);
}
export { NullProtoObj, addRoute, createRouter, findAllRoutes, findRoute, removeRoute, routeToRegExp };

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