@minecraft/creator-tools
Version:
Minecraft Creator Tools command line and libraries.
76 lines (75 loc) • 2.71 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const IMolangNode_1 = require("./IMolangNode");
const MolangNode_1 = __importDefault(require("./MolangNode"));
// NOTE NOTE: I tried to call this MolangExpression but it was giving errors in the vscbuild process
class Molang {
_data;
constructor(molang) {
const node = this.parse(molang);
this._data = { rootNode: node.data };
}
parse(molangExpression) {
const tokens = this.tokenize(molangExpression);
const syntaxTree = this.parseTokens(tokens);
return syntaxTree;
}
tokenize(expression) {
// Simple tokenizer splitting by spaces and operators
return expression.match(/(\d+|\w+|[()+\-/])/g) || [];
}
parseTokens(tokens) {
const stack = [];
const operators = [];
const precedence = {
"+": 1,
"-": 1,
"*": 2,
"/": 2,
};
const operatorSet = new Set(["+", "-", "*", "/"]);
const applyOperator = () => {
const operator = operators.pop();
const right = stack.pop();
const left = stack.pop();
const node = {
type: IMolangNode_1.MolangNodeType.operator,
value: operator,
left: left?.data,
right: right?.data,
};
stack.push(new MolangNode_1.default(node));
};
for (const token of tokens) {
if (/\d+/.test(token)) {
stack.push(new MolangNode_1.default({ type: IMolangNode_1.MolangNodeType.number, value: token }));
}
else if (/\w+/.test(token)) {
stack.push(new MolangNode_1.default({ type: IMolangNode_1.MolangNodeType.variable, value: token }));
}
else if (token === "(") {
operators.push(token);
}
else if (token === ")") {
while (operators.length && operators[operators.length - 1] !== "(") {
applyOperator();
}
operators.pop(); // Remove '('
}
else if (operatorSet.has(token)) {
while (operators.length && precedence[operators[operators.length - 1]] >= precedence[token]) {
applyOperator();
}
operators.push(token);
}
}
while (operators.length) {
applyOperator();
}
return stack[0];
}
}
exports.default = Molang;