typescript-to-lua
Version:
A generic TypeScript to Lua transpiler. Write your code in TypeScript and publish Lua!
84 lines • 3.64 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.transformTypeOfExpression = void 0;
exports.transformTypeOfBinaryExpression = transformTypeOfBinaryExpression;
const ts = __importStar(require("typescript"));
const lua = __importStar(require("../../LuaAST"));
const LuaLib_1 = require("../../LuaLib");
const lualib_1 = require("../utils/lualib");
const binary_expression_1 = require("./binary-expression");
const transformTypeOfExpression = (node, context) => {
const innerExpression = context.transformExpression(node.expression);
return (0, lualib_1.transformLuaLibFunction)(context, LuaLib_1.LuaLibFeature.TypeOf, node, innerExpression);
};
exports.transformTypeOfExpression = transformTypeOfExpression;
function transformTypeOfBinaryExpression(context, node) {
const operator = node.operatorToken.kind;
if (operator !== ts.SyntaxKind.EqualsEqualsToken &&
operator !== ts.SyntaxKind.EqualsEqualsEqualsToken &&
operator !== ts.SyntaxKind.ExclamationEqualsToken &&
operator !== ts.SyntaxKind.ExclamationEqualsEqualsToken) {
return;
}
let literalExpression;
let typeOfExpression;
if (ts.isTypeOfExpression(node.left)) {
typeOfExpression = node.left;
literalExpression = node.right;
}
else if (ts.isTypeOfExpression(node.right)) {
typeOfExpression = node.right;
literalExpression = node.left;
}
else {
return;
}
const comparedExpression = context.transformExpression(literalExpression);
if (!lua.isStringLiteral(comparedExpression))
return;
if (comparedExpression.value === "object") {
comparedExpression.value = "table";
}
else if (comparedExpression.value === "undefined") {
comparedExpression.value = "nil";
}
const innerExpression = context.transformExpression(typeOfExpression.expression);
const typeCall = lua.createCallExpression(lua.createIdentifier("type"), [innerExpression], typeOfExpression);
const { precedingStatements, result } = (0, binary_expression_1.transformBinaryOperation)(context, typeCall, comparedExpression, [], operator, node);
context.addPrecedingStatements(precedingStatements);
return result;
}
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