329 lines
9.1 KiB
JavaScript
329 lines
9.1 KiB
JavaScript
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import fs from 'fs';
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import path from 'path';
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import { isPlainObject } from 'lodash';
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import { info, warn, error } from './helpers/log';
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import { Dummy } from '../src/jsonrpc/helpers';
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import interfaces from '../src/jsonrpc';
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import rustMethods from './helpers/parsed-rpc-traits';
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const ROOT_DIR = path.join(__dirname, '../docs');
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if (!fs.existsSync(ROOT_DIR)) {
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fs.mkdirSync(ROOT_DIR);
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}
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Object.keys(rustMethods).forEach((group) => {
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Object.keys(rustMethods[group]).forEach((method) => {
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if (interfaces[group] == null || interfaces[group][method] == null) {
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error(`${group}_${method} is defined in Rust traits, but not in js/src/jsonrpc/interfaces`);
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}
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});
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});
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function printType (type, obj) {
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if (!type) {
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throw new Error(`Invalid type in ${JSON.stringify(obj)}`);
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}
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return type.print || `\`${type.name}\``;
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}
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function formatDescription (obj, prefix = '', indent = '') {
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const optional = obj.optional ? '(optional) ' : '';
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const defaults = obj.default ? `(default: \`${obj.default}\`) ` : '';
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return `${indent}${prefix}${printType(obj.type, obj)} - ${optional}${defaults}${obj.desc}`;
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}
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function formatType (obj) {
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if (obj == null || obj.type == null) {
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return obj;
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}
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const details = obj.details || obj.type.details;
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if (details) {
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const sub = Object.keys(details).map((key) => {
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return formatDescription(details[key], `\`${key}\`: `, ' - ');
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}).join('\n');
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return `${formatDescription(obj)}\n${sub}`;
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} else if (obj.type && obj.type.name) {
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return formatDescription(obj);
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}
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return obj;
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}
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const rpcReqTemplate = {
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method: 'web3_clientVersion',
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params: [],
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id: 1,
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jsonrpc: '2.0'
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};
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const { isDummy } = Dummy;
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const { isArray } = Array;
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// Checks if a field definition has an example,
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// or describes an object with fields that recursively have examples of their own,
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// or is optional.
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function hasExample ({ optional, example, details } = {}) {
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if (optional || example !== undefined) {
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return true;
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}
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if (details !== undefined) {
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const values = Object.keys(details).map((key) => details[key]);
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return values.every(hasExample);
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}
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return false;
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}
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// Remove all optional (trailing) params without examples from an array
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function removeOptionalWithoutExamples (arr) {
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return arr.filter(({ optional, example, details }) => {
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return !optional || example !== undefined || details !== undefined;
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});
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}
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// Grabs JSON compatible
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function getExample (obj) {
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if (isArray(obj)) {
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return removeOptionalWithoutExamples(obj).map(getExample);
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}
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const { example, details } = obj;
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if (example === undefined && details !== undefined) {
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const nested = {};
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Object.keys(details).forEach((key) => {
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nested[key] = getExample(details[key]);
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});
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return nested;
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}
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return example;
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}
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function stringifyExample (example, dent = '') {
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const indent = `${dent} `;
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if (isDummy(example)) {
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return example.toString();
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}
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if (isArray(example)) {
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const last = example.length - 1;
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// If all elements are dummies, print out a single line.
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// Also covers empty arrays.
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if (example.every(isDummy)) {
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const dummies = example.map(d => d.toString());
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return `[${dummies.join(', ')}]`;
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}
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// For arrays containing just one object or string, don't unwind the array to multiline
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if (last === 0 && (isPlainObject(example[0]) || typeof example[0] === 'string')) {
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return `[${stringifyExample(example[0], dent)}]`;
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}
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const elements = example.map((value, index) => {
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const comma = index !== last ? ',' : '';
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const comment = value != null && value._comment ? ` // ${value._comment}` : '';
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return `${stringifyExample(value, indent)}${comma}${comment}`;
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});
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return `[\n${indent}${elements.join(`\n${indent}`)}\n${dent}]`;
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}
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if (isPlainObject(example)) {
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const keys = Object.keys(example);
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const last = keys.length - 1;
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// print out an empty object
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if (last === -1) {
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return '{}';
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}
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const elements = keys.map((key, index) => {
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const value = example[key];
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const comma = index !== last ? ',' : '';
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const comment = value && value._comment ? ` // ${example[key]._comment}` : '';
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return `${JSON.stringify(key)}: ${stringifyExample(value, indent)}${comma}${comment}`;
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});
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return `{\n${indent}${elements.join(`\n${indent}`)}\n${dent}}`;
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}
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return JSON.stringify(example);
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}
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function buildExample (name, method) {
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// deprecated, don't care
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if (method.deprecated) {
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return '';
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}
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const logPostfix = method.subdoc ? ` (${method.subdoc})` : '';
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const hasReqExample = method.params.every(hasExample);
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const hasResExample = hasExample(method.returns);
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if (!hasReqExample && !hasResExample) {
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error(`${name} has no examples${logPostfix}`);
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return '';
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}
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const examples = [];
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if (hasReqExample) {
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const params = getExample(method.params);
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const req = Dummy.stringifyJSON(Object.assign({}, rpcReqTemplate, { method: name, params }));
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examples.push(`Request\n\`\`\`bash\ncurl --data '${req}' -H "Content-Type: application/json" -X POST localhost:8545\n\`\`\``);
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} else {
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warn(`${name} has a response example but not a request example${logPostfix}`);
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}
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if (hasResExample) {
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const res = stringifyExample({
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id: 1,
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jsonrpc: '2.0',
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result: getExample(method.returns)
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});
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examples.push(`Response\n\`\`\`js\n${res}\n\`\`\``);
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} else {
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if (typeof method.returns === 'string') {
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info(`${name} has a request example and only text description for response${logPostfix}`);
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} else {
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warn(`${name} has a request example but not a response example${logPostfix}`);
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}
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}
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return `\n\n#### Example\n\n${examples.join('\n\n')}`;
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}
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function buildParameters (params) {
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if (params.length === 0) {
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return '';
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}
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let md = `0. ${params.map(formatType).join('\n0. ')}`;
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if (params.length > 0 && params.every(hasExample) && !isDummy(params[0].example)) {
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const example = getExample(params);
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md = `${md}\n\n\`\`\`js\nparams: ${stringifyExample(example)}\n\`\`\``;
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}
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return md;
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}
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Object.keys(interfaces).sort().forEach((group) => {
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const spec = interfaces[group];
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for (const key in spec) {
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const method = spec[key];
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if (!method || !method.subdoc) {
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continue;
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}
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const subgroup = `${group}_${method.subdoc}`;
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interfaces[subgroup] = interfaces[subgroup] || {};
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interfaces[subgroup][key] = method;
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delete spec[key];
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}
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});
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Object.keys(interfaces).sort().forEach((group) => {
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let preamble = `# The \`${group}\` Module`;
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let markdown = `## JSON-RPC methods\n`;
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const spec = interfaces[group];
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if (spec._preamble) {
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preamble = `${preamble}\n\n${spec._preamble}`;
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}
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const content = [];
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const tocMain = [];
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const tocSections = {};
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// Comparator that will sort by sections first, names second
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function methodComparator (a, b) {
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const sectionA = spec[a].section || '';
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const sectionB = spec[b].section || '';
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return sectionA.localeCompare(sectionB) || a.localeCompare(b);
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}
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Object.keys(spec).sort(methodComparator).forEach((iname) => {
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const method = spec[iname];
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const groupName = group.replace(/_.*$/, '');
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const name = `${groupName}_${iname}`;
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if (method.nodoc || method.deprecated) {
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info(`Skipping ${name}: ${method.nodoc || 'Deprecated'}`);
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return;
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}
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if (rustMethods[groupName] == null || rustMethods[groupName][iname] == null) {
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error(`${name} is defined in js/src/jsonrpc/interfaces, but not in Rust traits`);
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}
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const desc = method.desc;
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const params = buildParameters(method.params);
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const returns = `- ${formatType(method.returns)}`;
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const example = buildExample(name, method);
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const { section } = method;
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const toc = section ? tocSections[section] = tocSections[section] || [] : tocMain;
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toc.push(`- [${name}](#${name.toLowerCase()})`);
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content.push(`### ${name}\n\n${desc}\n\n#### Parameters\n\n${params || 'None'}\n\n#### Returns\n\n${returns || 'None'}${example}`);
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});
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markdown = `${markdown}\n${tocMain.join('\n')}`;
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Object.keys(tocSections).sort().forEach((section) => {
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markdown = `${markdown}\n\n#### ${section}\n${tocSections[section].join('\n')}`;
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});
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markdown = `${markdown}\n\n## JSON-RPC API Reference\n\n${content.join('\n\n***\n\n')}\n\n`;
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const mdFile = path.join(ROOT_DIR, `${group}.md`);
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fs.writeFileSync(mdFile, `${preamble}\n\n${markdown}`, 'utf8');
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});
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