mdx-m3-viewer
Version:
A browser WebGL model viewer. Mainly focused on models of the games Warcraft 3 and Starcraft 2.
108 lines • 4.66 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const tokenstream_1 = require("./tokenstream");
function jass2lua(jass) {
const stream = new tokenstream_1.default(jass);
const tokens = [];
let token;
while ((token = stream.read()) !== undefined) {
if (token === 'function') {
const name = stream.readSafe();
stream.read(); // takes
token = stream.read(); // nothing or type
let params = '';
if (token !== 'nothing') {
params += stream.readSafe();
while (stream.read() === ',') {
stream.read();
params += ',' + stream.readSafe();
}
}
else {
stream.read(); // returns
}
stream.read(); // return type
const header = `function ${name}(${params})`;
const body = [];
while ((token = stream.readSafe()) !== 'endfunction') {
if (token === 'local') {
stream.read(); // type
const arrayOrName = stream.readSafe();
if (arrayOrName === 'array') {
body.push(`local ${stream.readSafe()}={}`);
}
else {
body.push(`local ${arrayOrName}${stream.readUntil('\n')}\n`);
}
}
else if (token === 'if' || token === 'elseif' || token === 'not') {
body.push(token + ' ');
}
else if (token === 'then') {
body.push(' ' + token);
}
else if (token === 'loop') {
body.push('while 1 do');
}
else if (token === 'endloop' || token === 'endif') {
body.push('end');
}
else if (token === 'exitwhen') {
body.push(`if ${stream.readUntil('\n')} then break end\n`);
}
else if (token === 'return') {
const value = stream.readUntil('\n');
token = stream.peek();
// return statmentes can only be the last statements in their block.
// If a statement isn't the last in its block, it is inserted into its own if block.
if (token === 'endif' || token === 'endloop' || token === 'endfunction') {
body.push(`return ${value}\n`);
}
else {
body.push(`if 1 then return ${value} end\n`);
}
}
else if (token === '\n') {
const lastLine = body[body.length - 1];
if (lastLine && lastLine[lastLine.length - 1] !== '\n') {
body.push('\n');
}
}
else if (token !== 'set' && token !== 'call' && token !== 'function') {
body.push(token);
}
}
tokens.push(`${header}\n${body.join('')}end`);
}
else if (token === 'globals') {
while ((token = stream.read()) !== 'endglobals') {
if (token !== '\n') {
// token can either be type or constant.
if (token === 'constant') {
token = stream.read();
}
const arrayOrName = stream.read();
if (arrayOrName === 'array') {
tokens.push(`${stream.readSafe()}={}`);
}
else {
// Unlike locals, having a global name with no value is a syntax error.
// In addition, globals that are nil effectively don't exist in Lua.
// Therefore, remove both cases.
let value = 'nil';
if (stream.peek() === '=') {
stream.read(); // =
value = stream.readUntil('\n');
}
if (value !== 'nil') {
tokens.push(`${arrayOrName}=${value}`);
}
}
}
}
}
}
return tokens.join('\n');
}
exports.default = jass2lua;
//# sourceMappingURL=jass2lua.js.map