typescript-to-lua
Version:
A generic TypeScript to Lua transpiler. Write your code in TypeScript and publish Lua!
70 lines • 3.1 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.transformExpressionStatement = void 0;
exports.wrapInStatement = wrapInStatement;
const lua = __importStar(require("../../LuaAST"));
const context_1 = require("../context");
const binary_expression_1 = require("./binary-expression");
const unary_expression_1 = require("./unary-expression");
const transformExpressionStatement = (node, context) => {
const unaryExpressionResult = (0, unary_expression_1.transformUnaryExpressionStatement)(context, node);
if (unaryExpressionResult) {
return unaryExpressionResult;
}
const binaryExpressionResult = (0, binary_expression_1.transformBinaryExpressionStatement)(context, node);
if (binaryExpressionResult) {
return binaryExpressionResult;
}
return wrapInStatement(context.transformExpression(node.expression));
};
exports.transformExpressionStatement = transformExpressionStatement;
function wrapInStatement(result) {
const isTempVariable = lua.isIdentifier(result) && result.symbolId === context_1.tempSymbolId;
if (isTempVariable) {
return undefined;
}
// "synthetic": no side effects and no original source
const isSyntheticExpression = (lua.isIdentifier(result) || lua.isLiteral(result)) && result.line === undefined;
if (isSyntheticExpression) {
return undefined;
}
if (lua.isCallExpression(result) || lua.isMethodCallExpression(result)) {
return lua.createExpressionStatement(result);
}
// Assign expression statements to dummy to make sure they're legal Lua
return lua.createVariableDeclarationStatement(lua.createAnonymousIdentifier(), result);
}
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