openethereum/js/scripts/helpers/parsed-rpc-traits.js
2017-10-24 12:31:50 +01:00

82 lines
2.5 KiB
JavaScript

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
import fs from 'fs';
import path from 'path';
// ```js
// rustMethods['eth']['call'] === true
// ```
const rustMethods = {};
export default rustMethods;
// Get a list of JSON-RPC from Rust trait source code
function parseMethodsFromRust (source) {
// Matching the custom `rpc` attribute with it's doc comment
const attributePattern = /((?:\s*\/\/\/.*$)*)\s*#\[rpc\(([^)]+)\)]/gm;
const commentPattern = /\s*\/\/\/\s*/g;
const separatorPattern = /\s*,\s*/g;
const assignPattern = /([\S]+)\s*=\s*"([^"]*)"/;
const ignorePattern = /@(ignore|deprecated|unimplemented|alias)\b/i;
const methods = [];
source.toString().replace(attributePattern, (match, comment, props) => {
comment = comment.replace(commentPattern, '\n').trim();
// Skip deprecated methods
if (ignorePattern.test(comment)) {
return match;
}
props.split(separatorPattern).forEach((prop) => {
const [, key, value] = prop.split(assignPattern) || [];
if (key === 'name' && value != null) {
methods.push(value);
}
});
return match;
});
return methods;
}
// Get a list of all JSON-RPC methods from all defined traits
function getMethodsFromRustTraits () {
const traitsDir = path.join(__dirname, '../../../rpc/src/v1/traits');
return fs.readdirSync(traitsDir)
.filter((name) => name !== 'mod.rs' && /\.rs$/.test(name))
.map((name) => fs.readFileSync(path.join(traitsDir, name)))
.map(parseMethodsFromRust)
.reduce((a, b) => a.concat(b));
}
getMethodsFromRustTraits().sort().forEach((method) => {
const [group, name] = method.split('_');
// Skip methods with malformed names
if (group == null || name == null) {
return;
}
rustMethods[group] = rustMethods[group] || {};
rustMethods[group][name] = true;
});