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luaIterator.spec.ts
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272 lines (261 loc) · 8.35 KB
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import * as ts from "typescript";
import * as tstl from "../../../src";
import * as TSTLErrors from "../../../src/TSTLErrors";
import * as util from "../../util";
test("forof lua iterator", () => {
const code = `
const arr = ["a", "b", "c"];
/** @luaIterator */
interface Iter extends Iterable<string> {}
function luaIter(): Iter {
let i = 0;
return (() => arr[i++]) as any;
}
let result = "";
for (let e of luaIter()) { result += e; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("abc");
});
test("forof array lua iterator", () => {
const code = `
const arr = ["a", "b", "c"];
/** @luaIterator */
interface Iter extends Array<string> {}
function luaIter(): Iter {
let i = 0;
return (() => arr[i++]) as any;
}
let result = "";
for (let e of luaIter()) { result += e; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("abc");
});
test("forof lua iterator with existing variable", () => {
const code = `
const arr = ["a", "b", "c"];
/** @luaIterator */
interface Iter extends Iterable<string> {}
function luaIter(): Iter {
let i = 0;
return (() => arr[i++]) as any;
}
let result = "";
let e: string;
for (e of luaIter()) { result += e; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("abc");
});
test("forof lua iterator destructuring", () => {
const code = `
const arr = ["a", "b", "c"];
/** @luaIterator */
interface Iter extends Iterable<[string, string]> {}
function luaIter(): Iter {
let i = 0;
return (() => arr[i] && [i.toString(), arr[i++]]) as any;
}
let result = "";
for (let [a, b] of luaIter()) { result += a + b; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("0a1b2c");
});
test("forof lua iterator destructuring with existing variables", () => {
const code = `
const arr = ["a", "b", "c"];
/** @luaIterator */
interface Iter extends Iterable<[string, string]> {}
function luaIter(): Iter {
let i = 0;
return (() => arr[i] && [i.toString(), arr[i++]]) as any;
}
let result = "";
let a: string;
let b: string;
for ([a, b] of luaIter()) { result += a + b; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("0a1b2c");
});
test("forof lua iterator tuple-return", () => {
const code = `
const arr = ["a", "b", "c"];
/**
* @luaIterator
* @tupleReturn
*/
interface Iter extends Iterable<[string, string]> {}
function luaIter(): Iter {
let i = 0;
/** @tupleReturn */
function iter() { return arr[i] && [i.toString(), arr[i++]] || []; }
return iter as any;
}
let result = "";
for (let [a, b] of luaIter()) { result += a + b; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("0a1b2c");
});
test("forof lua iterator tuple-return with existing variables", () => {
const code = `
const arr = ["a", "b", "c"];
/**
* @luaIterator
* @tupleReturn
*/
interface Iter extends Iterable<[string, string]> {}
function luaIter(): Iter {
let i = 0;
/** @tupleReturn */
function iter() { return arr[i] && [i.toString(), arr[i++]] || []; }
return iter as any;
}
let result = "";
let a: string;
let b: string;
for ([a, b] of luaIter()) { result += a + b; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("0a1b2c");
});
test("forof lua iterator tuple-return single variable", () => {
const code = `
/**
* @luaIterator
* @tupleReturn
*/
interface Iter extends Iterable<[string, string]> {}
declare function luaIter(): Iter;
for (let x of luaIter()) {}
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
expect(() => util.transpileString(code, compilerOptions)).toThrowExactError(
TSTLErrors.UnsupportedNonDestructuringLuaIterator(util.nodeStub)
);
});
test("forof lua iterator tuple-return single existing variable", () => {
const code = `
/**
* @luaIterator
* @tupleReturn
*/
interface Iter extends Iterable<[string, string]> {}
declare function luaIter(): Iter;
let x: [string, string];
for (x of luaIter()) {}
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
expect(() => util.transpileString(code, compilerOptions)).toThrowExactError(
TSTLErrors.UnsupportedNonDestructuringLuaIterator(util.nodeStub)
);
});
test("forof forwarded lua iterator", () => {
const code = `
const arr = ["a", "b", "c"];
/** @luaIterator */
interface Iter extends Iterable<string> {}
function luaIter(): Iter {
let i = 0;
function iter() { return arr[i++]; }
return iter as any;
}
function forward() {
const iter = luaIter();
return iter;
}
let result = "";
for (let a of forward()) { result += a; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("abc");
});
test("forof forwarded lua iterator with tupleReturn", () => {
const code = `
const arr = ["a", "b", "c"];
/**
* @luaIterator
* @tupleReturn
*/
interface Iter extends Iterable<[string, string]> {}
function luaIter(): Iter {
let i = 0;
/** @tupleReturn */
function iter() { return arr[i] && [i.toString(), arr[i++]] || []; }
return iter as any;
}
function forward() {
const iter = luaIter();
return iter;
}
let result = "";
for (let [a, b] of forward()) { result += a + b; }
return result;
`;
const compilerOptions = {
luaLibImport: tstl.LuaLibImportKind.Require,
luaTarget: tstl.LuaTarget.Lua53,
target: ts.ScriptTarget.ES2015,
};
const result = util.transpileAndExecute(code, compilerOptions);
expect(result).toBe("0a1b2c");
});