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misc.js
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misc.js
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"use strict";
var { builders :b, namedTypes} = require('ast-types');
var recast = require('recast');
function _convertValToAST(value) {
if (Array.isArray(value)) {
return b.arrayExpression(value.map(_convertValToAST));
}
if (value instanceof Map) {
return b.newExpression(
b.identifier('Map'),
[b.arrayExpression(Array.from(value).map(
(v) => b.arrayExpression(v.map(_convertValToAST))))]);
}
if (value instanceof Set) {
return b.newExpression(
b.identifier('Set'),
[b.arrayExpression(Array.from(value).map(_convertValToAST))]);
}
if (namedTypes.Node.check(value)) {
return value;
}
return b.literal(value);
}
class Classes {
constructor() {
this.classes = new Map();
}
newClass(name, extend) {
var klass = new Class(name, extend);
this.classes.set(name, klass);
return klass;
}
getClass(name) {
return this.classes.get(name);
}
program() {
var classes = [
b.importDeclaration(
[
b.importSpecifier(b.identifier('ValueEnum')),
b.importSpecifier(b.identifier('BitEnum')),
b.importSpecifier(b.identifier('CursorBuffer')),
],
b.literal('./endianbuffer')
),
];
for (let [name, klass] of this.classes) {
classes.push(b.exportDeclaration(false, klass.gen()));
}
return b.program(classes);
}
recastPrint() {
return recast.print(this.program(), { tabWidth: 2 });
}
toString() {
return this.recastPrint().code;
}
}
class Class {
constructor(name, extend) {
this.name = name;
this.extend = extend;
this.body = [];
}
addMethod(name, args, body) {
this.body.push(b.methodDefinition(
'method',
b.identifier(name),
b.functionExpression(
null,
args,
b.blockStatement(body))));
}
__addSymMethod(name, callname, read) {
var callArguments = [];
if (!read) {
callArguments = [b.spreadElement(b.identifier('arguments'))];
}
this.addMethod(
name,
[],
[(read ? b.returnStatement : b.expressionStatement)(b.callExpression(
b.memberExpression(
b.thisExpression(),
b.identifier(callname)),
callArguments
))]);
}
addSymRead(name, callname) {
this.__addSymMethod(name, callname, true);
}
addSymWrite(name, callname) {
this.__addSymMethod(name, callname, false);
}
addProperty(name, value, is_static) {
this.body.push(b.classProperty(
b.identifier(name),
_convertValToAST(value),
null,
is_static));
// Add the property here so we can reference it later
// (e.g. enums from statement_body)
this[name] = value;
if (value instanceof Map) {
let inv = this[`${name}_inv`] = new Map();
for (let [k, v] of value) {
inv.set(v, k);
}
}
}
gen() {
var extend = null;
if (this.extend) {
extend = b.identifier(this.extend);
}
return b.classDeclaration(
b.identifier(this.name),
b.classBody(this.body),
extend,
[]);
}
}
module.exports = {
Class: Class,
Classes: Classes,
}