mirror of
https://github.com/titanscouting/tra-analysis.git
synced 2024-12-29 02:19:08 +00:00
84 lines
1.7 KiB
JavaScript
84 lines
1.7 KiB
JavaScript
'use strict';
|
|
module.exports.parse = parse;
|
|
module.exports.generate = generate;
|
|
|
|
// TODO(jamestalmage): Allow full range of identifier characters instead of just ASCII
|
|
//
|
|
// This will likely require a build step
|
|
//
|
|
// SPEC: http://www.ecma-international.org/ecma-262/5.1/#sec-7.6
|
|
//
|
|
// TOOLING:
|
|
// https://github.com/mathiasbynens/regenerate
|
|
// https://www.npmjs.com/package/regjsgen
|
|
|
|
var regex = /^\s*(?:([A-Za-z$_][A-Za-z0-9$_]*)\s*\.)?\s*([A-Za-z$_][A-Za-z0-9$_]*)\s*\(\s*((?:[A-Za-z$_][A-Za-z0-9$_]*)|(?:\[\s*[A-Za-z$_][A-Za-z0-9$_]*\s*]))?((?:\s*,\s*(?:(?:[A-Za-z$_][A-Za-z0-9$_]*)|(?:\[\s*[A-Za-z$_][A-Za-z0-9$_]*\s*])))+)?\s*\)\s*$/;
|
|
|
|
function parse(str) {
|
|
var match = regex.exec(str);
|
|
if (!match) {
|
|
return null;
|
|
}
|
|
|
|
var callee;
|
|
if (match[1]) {
|
|
callee = {
|
|
type: 'MemberExpression',
|
|
object: match[1],
|
|
member: match[2]
|
|
};
|
|
} else {
|
|
callee = {
|
|
type: 'Identifier',
|
|
name: match[2]
|
|
};
|
|
}
|
|
|
|
var args = match[4] || '';
|
|
args = args.split(',');
|
|
if (match[3]) {
|
|
args[0] = match[3];
|
|
}
|
|
var trimmed = [];
|
|
args.forEach(function (str) {
|
|
var optional = false;
|
|
str = str.replace(/\s+/g, '');
|
|
if (!str.length) {
|
|
return;
|
|
}
|
|
if (str.charAt(0) === '[' && str.charAt(str.length - 1) === ']') {
|
|
optional = true;
|
|
str = str.substring(1, str.length - 1);
|
|
}
|
|
trimmed.push({
|
|
name: str,
|
|
optional: optional
|
|
});
|
|
});
|
|
|
|
return {
|
|
callee: callee,
|
|
args: trimmed
|
|
};
|
|
}
|
|
|
|
function generate(parsed) {
|
|
var callee;
|
|
if (parsed.callee.type === 'MemberExpression') {
|
|
callee = [
|
|
parsed.callee.object,
|
|
'.',
|
|
parsed.callee.member
|
|
];
|
|
} else {
|
|
callee = [parsed.callee.name];
|
|
}
|
|
return callee.concat([
|
|
'(',
|
|
parsed.args.map(function (arg) {
|
|
return arg.optional ? '[' + arg.name + ']' : arg.name;
|
|
}).join(', '),
|
|
')'
|
|
]).join('');
|
|
}
|