js-slang
Version:
Javascript-based implementations of Source, written in Typescript
125 lines • 4.32 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.miscBuiltinFunctions = void 0;
const ArrowFunctionExpression_1 = require("../nodes/Expression/ArrowFunctionExpression");
const Identifier_1 = require("../nodes/Expression/Identifier");
const Literal_1 = require("../nodes/Expression/Literal");
const lists_1 = require("./lists");
const _1 = require(".");
exports.miscBuiltinFunctions = {
arity: {
definition: (args) => {
if (args[0] instanceof ArrowFunctionExpression_1.StepperArrowFunctionExpression) {
return new Literal_1.StepperLiteral(args[0].params.length);
}
if (args[0] instanceof Identifier_1.StepperIdentifier) {
if (args[0].name.startsWith('math_')) {
// Math builtins
const func = Math[args[0].name.split('_')[1]];
if (typeof func !== 'function') {
throw new Error('arity expects a function as argument');
}
return new Literal_1.StepperLiteral(func.length);
}
if (Object.keys(lists_1.listBuiltinFunctions).includes(args[0].name)) {
return new Literal_1.StepperLiteral(lists_1.listBuiltinFunctions[args[0].name].arity);
}
if (Object.keys(exports.miscBuiltinFunctions).includes(args[0].name)) {
return new Literal_1.StepperLiteral(exports.miscBuiltinFunctions[args[0].name].arity);
}
}
throw new Error('arity expects a function as argument');
},
arity: 1
},
char_at: {
definition: (args) => {
const str = args[0].value;
const index = args[1].value;
return new Literal_1.StepperLiteral(str.charAt(index));
},
arity: 2
},
display: {
definition: (args) => {
return args[0];
},
arity: 1
},
error: {
definition: (args) => {
const errorMessage = args[0].value;
throw new Error(errorMessage);
},
arity: 1
},
get_time: {
definition: (_args) => {
return new Literal_1.StepperLiteral(Date.now());
},
arity: 0
},
is_boolean: {
definition: (args) => {
return new Literal_1.StepperLiteral(typeof args[0].value === 'boolean');
},
arity: 1
},
is_function: {
definition: (args) => {
return new Literal_1.StepperLiteral(args[0] instanceof ArrowFunctionExpression_1.StepperArrowFunctionExpression ||
(args[0] instanceof Identifier_1.StepperIdentifier &&
(0, _1.isBuiltinFunction)(args[0].name)));
},
arity: 1
},
is_number: {
definition: (args) => {
return new Literal_1.StepperLiteral(typeof args[0].value === 'number');
},
arity: 1
},
is_string: {
definition: (args) => {
return new Literal_1.StepperLiteral(typeof args[0].value === 'string');
},
arity: 1
},
is_undefined: {
definition: (args) => {
return new Literal_1.StepperLiteral(args[0].value === undefined);
},
arity: 1
},
parse_int: {
definition: (args) => {
const str = args[0].value;
const radix = args.length > 1 ? args[1].value : 10;
return new Literal_1.StepperLiteral(parseInt(str, radix));
},
arity: 2
},
prompt: {
definition: (args) => {
const message = args[0].value;
const result = window.prompt(message);
return new Literal_1.StepperLiteral(result !== null ? result : null);
},
arity: 0
},
stringify: {
definition: (args) => {
const value = args[0];
let stringified;
if (value instanceof Literal_1.StepperLiteral) {
stringified = JSON.stringify(value.value);
}
else {
stringified = value.toString();
}
return new Literal_1.StepperLiteral(stringified);
},
arity: 1
}
};
//# sourceMappingURL=misc.js.map