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rename lots of things

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folex
2019-08-16 12:00:50 +03:00
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backend-assemblyscript/step1-json-api/assembly/__tests__/as-pect.d.ts vendored Normal file
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/**
* This function creates a test group in the test loader.
*
* @param {string} description - This is the name of the test group.
* @param {() => void} callback - A function that contains all of the closures for this test group.
*
* @example
*
* ```ts
* describe("my test suite", (): void => {
* // put your tests here
* });
* ```
*/
declare function describe(description: string, callback: () => void): void;
/**
* This function creates a test inside the given test group. It must be placed inside a describe
* block.
*
* @param {string} description - This is the name of the test, and should describe a behavior.
* @param {() => void} callback - A function that contains a set of expectations for this test.
*
* @example
*
* ```ts
* describe("the meaning of life", (): void => {
* it("should be 42", (): void => {
* // put your expectations here
* expect<i32>(29 + 13).toBe(42);
* });
* });
* ```
*/
declare function it(description: string, callback: () => void): void;
/**
* A test that does not run, and is longhand equivalent to using todo function without a
* callback. This test does not get run and is reported like a todo.
*
* @param {string} description - This is the name of the test, and should describe a behavior.
* @param {() => void} callback - A function that contains a set of expectations for this test.
*/
declare function xit(description: string, callback: () => void): void;
/**
* A test that does not run, and is longhand equivalent to using todo function without a
* callback. This test does not get run and is reported like a todo.
*
* @param {string} description - This is the name of the test, and should describe a behavior.
* @param {() => void} callback - A function that contains a set of expectations for this test.
*/
declare function xtest(description: string, callback: () => void): void;
/**
* This function creates a test inside the given test group. It must be placed inside a describe
* block.
*
* @param {string} description - This is the name of the test, and should describe a behavior.
* @param {() => void} callback - A function that contains a set of expectations for this test.
*
* @example
* ```ts
* describe("the meaning of life", (): void => {
* test("the value should be 42", (): void => {
* // put your expectations here
* expect<i32>(29 + 13).toBe(42);
* });
* });
* ```
*/
declare function test(description: string, callback: () => void): void;
/**
* This function creates a test that is expected to fail. This is useful to verify if a given
* behavior is expected to throw.
*
* @param {string} description - This is the name of the test, and should describe a behavior.
* @param {() => void} callback - A function that contains a set of expectations for this test.
* @param {string?} message - A message that describes why the test should fail.
*
* @example
*
* ```ts
* describe("the meaning of life", (): void => {
* throws("the value should be 42", (): void => {
* // put your expectations here
* expect<i32>(29 + 13).not.toBe(42);
* });
* });
* ```
*/
declare function throws(description: string, callback: () => void, message?: string): void;
/**
* This function creates a test that is expected to fail. This is useful to verify if a given
* behavior is expected to throw.
*
* @param {string} description - This is the name of the test, and should describe a behavior.
* @param {() => void} callback - A function that contains a set of expectations for this test.
* @param {string?} message - A message that describes why the test should fail.
*
* @example
*
* ```ts
* describe("the meaning of life", (): void => {
* itThrows("when the value should be 42", (): void => {
* // put your expectations here
* expect<i32>(29 + 13).not.toBe(42);
* }, "The value is actually 42.");
* });
* ```
*/
declare function itThrows(description: string, callback: () => void, message?: string): void;
/**
* This function creates a callback that is called before each individual test is run in this test
* group.
*
* @param {function} callback - The function to be run before each test in the current test group.
*
* @example
*
* ```ts
* // create a global
* var cat: Cat = new Cat();
*
* describe("cats", (): void => {
* beforeEach((): void => {
* cat.meow(1); // meow once per test
* });
* });
* ```
*/
declare function beforeEach(callback: () => void): void;
/**
* This function creates a callback that is called before the whole test group is run, and only
* once.
*
* @param {function} callback - The function to be run before each test in the current test group.
*
* @example
*
* ```ts
* // create a global
* var dog: Dog = null;
* describe("dogs", (): void => {
* beforeAll((): void => {
* dog = new Dog(); // create a single dog once before the tests start
* });
* });
* ```
*/
declare function beforeAll(callback: () => void): void;
/**
* This function creates a callback that is called after each individual test is run in this test
* group.
*
* @param {function} callback - The function to be run after each test in the current test group.
*
* @example
*
* ```ts
* // create a global
* var cat: Cat = new Cat();
*
* describe("cats", (): void => {
* afterEach((): void => {
* cat.sleep(12); // cats sleep a lot
* });
* });
* ```
*/
declare function afterEach(callback: () => void): void;
/**
* This function creates a callback that is called after the whole test group is run, and only
* once.
*
* @param {function} callback - The function to be run after each test in the current test group.
*
* @example
*
* ```ts
* // create a global
* var dog: Dog = null;
* describe("dogs", (): void => {
* afterAll((): void => {
* memory.free(changetype<usize>(dog)); // free some memory
* });
* });
* ```
*/
declare function afterAll(callback: () => void): void;
/**
* Describes a value and returns an expectation to test the value.
*
* @type {T} - The expectation's type.
* @param {T} actual - The value being tested.
*
* @example
*
* ```ts
* expect<i32>(42).not.toBe(-1, "42 should not be -1");
* expect<i32>(19 + 23).toBe(42, "19 + 23 should equal 42");
* ```
*/
declare function expect<T>(actual: T | null): Expectation<T>;
/**
* Describes a void function and returns an expectation to test the function.
*
* @param {() => void} callback - The callback being tested.
*
* @example
*
* ```ts
* expectFn((): void => unreachable()).toThrow("unreachables do not throw");
* expectFn((): void => {
* cat.meow();
* }).not.toThrow("Uhoh, cats can't meow!");;
* ```
*/
declare function expectFn(cb: () => void): Expectation<() => void>;
/**
* Describes a test that needs to be written.
*
* @param {string} description - The description of the test that needs to be written.
*/
declare function todo(description: string): void;
/**
* Logs a single value to the logger, and is stringified. It works for references, values, and
* strings.
*
* @type {T} - The type to be logged.
* @param {T | null} value - The value to be logged.
*
* @example
*
* ```ts
* log<string>("This is a logged value.");
* log<i32>(42);
* log<Vec3>(new Vec(1, 2, 3));
* log<Vec3>(null);
* ```
*/
declare function log<T>(value: T | null): void;
/**
* An expectation for a value.
*/
// @ts-ignore
declare class Expectation<T> {
/**
* Create a new expectation.
*
* @param {T | null} actual - The actual value of the expectation.
*/
constructor(actual: T | null);
/**
* This expectation performs a strict equality on value types and reference types.
*
* @param {T | null} expected - The value to be compared.
* @param {string} message - The optional message that describes the expectation.
*
* @example
*
* ```ts
* expect<i32>(42).not.toBe(-1, "42 should not be -1");
* expect<i32>(19 + 23).toBe(42, "19 + 23 should equal 42");
* ```
*/
toBe(expected: T | null, message?: string): void;
/**
* This expectation performs a strict equality on value types and performs a memcompare on
* reference types. If the reference type `T` has reference types as properties, the comparison does
* not perform property traversal. It will only compare the pointer values in the memory block, and
* only compare `offsetof<T>()` bytes, regardless of the allocated block size.
*
* @param {T | null} expected - The value to be compared.
* @param {string} message - The optional message that describes the expectation.
*
* @example
*
* ```ts
* expect<Vec3>(new Vec3(1, 2, 3)).toStrictEqual(new Vec(1, 2, 3), "Vectors of the same shape should be equal");
* ```
*/
toStrictEqual(expected: T | null, message?: string): void;
/**
* This expectation performs a strict memory block equality based on the allocated block sizes.
*
* @param {T | null} expected - The value to be compared.
* @param {string} message - The optional message that describes the expectation.
*
* @example
*
* ```ts
* expect<Vec3>(new Vec3(1, 2, 3)).toBlockEqual(new Vec(1, 2, 3), "Vectors of the same shape should be equal");
* ```
*/
toBlockEqual(expected: T | null, message?: string): void;
/**
* If the value is callable, it calls the function, and fails the expectation if it throws, or hits
* an unreachable().
*
* @param {string} message - The optional message that describes the expectation.
*
* @example
*
* ```ts
* expectFn((): void => unreachable()).toThrow("unreachable() should throw.");
* expectFn((): void => {
* cat.sleep(100); // cats can sleep quite a lot
* }).not.toThrow("cats should sleep, not throw");
* ```
*/
toThrow(message?: string): void;
/**
* This expecation asserts that the value is truthy, like in javascript. If the value is a string,
* then strings of length 0 are not truthy.
*
* @param {string} message - The optional message that describes the expectation.
*
* @example
*
* ```ts
* expect<bool>(true).toBeTruthy("true is truthy.");
* expect<i32>(1).toBeTruthy("numeric values that are not 0 are truthy.");
* expect<Vec3>(new Vec3(1, 2, 3)).toBeTruthy("reference types that aren't null are truthy.");
* expect<bool>(false).not.toBeTruthy("false is not truthy.");
* expect<i32>(0).not.toBeTruthy("0 is not truthy.");
* expect<Vec3>(null).not.toBeTruthy("null is not truthy.");
* ```
*/
toBeTruthy(message?: string): void;
/**
* This expectation tests the value to see if it is null. If the value is a value type, it is
* never null. If the value is a reference type, it performs a strict null comparison.
*
* @param {string} message - The optional message that describes the expectation.
*
* @example
*
* ```ts
* expect<i32>(0).not.toBeNull("numbers are never null");
* expect<Vec3>(null).toBeNull("null reference types are null.");
* ```
*/
toBeNull(message?: string): void;
/**
* This expecation assert that the value is falsy, like in javascript. If the value is a string,
* then strings of length 0 are falsy.
*
* @param {string} message - The optional message that describes the expectation.
*
* @example
*
* ```ts
* expect<bool>(false).toBeFalsy("false is falsy.");
* expect<i32>(0).toBeFalsy("0 is falsy.");
* expect<Vec3>(null).toBeFalsy("null is falsy.");
* expect<bool>(true).not.toBeFalsy("true is not falsy.");
* expect<i32>(1).not.toBeFalsy("numeric values that are not 0 are not falsy.");
* expect<Vec3>(new Vec3(1, 2, 3)).not.toBeFalsy("reference types that aren't null are not falsy.");
* ```
*/
toBeFalsy(message?: string): void;
/**
* This expectation asserts that the value is greater than the expected value. Since operators can
* be overloaded in assemblyscript, it's possible for this to work on reference types.
*
* @param {T | null} expected - The expected value that the actual value should be greater than.
* @param {string} message - The optional message that describes this expectation.
*
* @example
*
* ```ts
* expect<i32>(10).toBeGreaterThan(4);
* expect<i32>(12).not.toBeGreaterThan(42);
* ```
*/
toBeGreaterThan(expected: T | null, message?: string): void;
/**
* This expectation asserts that the value is less than the expected value. Since operators can
* be overloaded in assemblyscript, it's possible for this to work on reference types.
*
* @param {T | null} value - The expected value that the actual value should be less than.
* @param {string} message - The optional message that describes this expectation.
*
* @example
*
* ```ts
* expect<i32>(10).not.toBeLessThan(4);
* expect<i32>(12).toBeLessThan(42);
* ```
*/
toBeLessThan(expected: T | null, message?: string): void;
/**
* This expectation asserts that the value is greater than or equal to the expected value. Since
* operators can be overloaded in assemblyscript, it's possible for this to work on reference
* types.
*
* @param {T | null} value - The expected value that the actual value should be greater than or
* equal to.
* @param {string} message - The optional message that describes this expectation.
*
* @example
*
* ```ts
* expect<i32>(42).toBeGreaterThanOrEqual(42);
* expect<i32>(10).toBeGreaterThanOrEqual(4);
* expect<i32>(12).not.toBeGreaterThanOrEqual(42);
* ```
*/
toBeGreaterThanOrEqual(expected: T | null, message?: string): void;
/**
* This expectation asserts that the value is less than or equal to the expected value. Since
* operators can be overloaded in assemblyscript, it's possible for this to work on reference
* types.
*
* @param {T | null} value - The expected value that the actual value should be less than or equal
* to.
* @param {string} message - The optional message that describes this expectation.
*
* @example
*
* ```ts
* expect<i32>(42).toBeLessThanOrEqual(42);
* expect<i32>(10).not.toBeLessThanOrEqual(4);
* expect<i32>(12).toBeLessThanOrEqual(42);
* ```
*/
toBeLessThanOrEqual(expected: T | null, message?: string): void;
/**
* This expectation asserts that the value is close to another value. Both numbers must be finite,
* and T must extend f64 or f32.
*
* @param {T extends f64 | f32} value - The expected value to be close to.
* @param {i32} decimalPlaces - The number of decimal places used to calculate epsilon. Default is
* 2.
* @param {string} message - The optional message that describes this expectation.
*
* @example
*
* ```ts
* expect<f64>(0.1 + 0.2).toBeCloseTo(0.3);
* ```
*/
toBeCloseTo(expected: T, decimalPlaces?: number, message?: string): void;
/**
* This function asserts the float type value is NaN.
*
* @param {string} message - The optional message the describes this expectation.
*
* @example
*
* ```ts
* expect<f64>(NaN).toBeNaN();
* expect<f32>(42).not.toBeNaN();
* ```
*/
toBeNaN(message?: string): void;
/**
* This function asserts a float is finite.
*
* @param {string} message - The optional message the describes this expectation.
* @example
*
* ```ts
* expect<f32>(42).toBeFinite();
* expect<f64>(Infinity).not.toBeFinite();
* ```
*/
toBeFinite(message?: string): void;
/**
* This method asserts the item has the expected length.
*
* @param {i32} expected - The expected length.
* @param {string} message - The optional message the describes this expectation.
*
* ```ts
* expect<i32[]>([1, 2, 3]).toHaveLength(3);
* ```
*/
toHaveLength(expected: i32, message?: string): void;
/**
* This method asserts that a given T that extends `Array<U>` has a value/reference included.
*
* @param {valueof<T>} expected - The expected item to be included in the Array.
* @param {string} message - The optional message the describes this expectation.
*
* @example
*
* ```ts
* expect<i32[]>([1, 2, 3]).toInclude(3);
* ```
*/
// @ts-ignore: expected value should be known at compile time
toInclude(expected: valueof<T>, message?: string): void;
/**
* This method asserts that a given T that extends `Array<U>` has a value/reference included.
*
* @param {valueof<T>} expected - The expected item to be included in the Array.
* @param {string} message - The optional message the describes this expectation.
*
* @example
*
* ```ts
* expect<i32[]>([1, 2, 3]).toContain(3);
* ```
*/
// @ts-ignore: expected value should be known at compile time
toContain(expected: valueof<T>, message?: string): void;
/**
* This method asserts that a given T that extends `Array<U>` has a value/reference included and
* compared via memory.compare().
*
* @param {i32} expected - The expected item to be included in the Array.
* @param {string} message - The optional message the describes this expectation.
*
* @example
* ```ts
* expect<Vec3[]>([new Vec3(1, 2, 3)]).toInclude(new Vec3(1, 2, 3));
* ```
*/
// @ts-ignore: expected value should be known at compile time
toIncludeEqual(expected: valueof<T>, message?: string): void;
/**
* This method asserts that a given T that extends `Array<U>` has a value/reference included and
* compared via memory.compare().
*
* @param {i32} expected - The expected item to be included in the Array.
* @param {string} message - The optional message the describes this expectation.
*
* @example
* ```ts
* expect<Vec3[]>([new Vec3(1, 2, 3)]).toInclude(new Vec3(1, 2, 3));
* ```
*/
// @ts-ignore: expected value should be known at compile time
toContainEqual(expected: valueof<T>, message?: string): void;
/**
* This computed property is chainable, and negates the existing expectation. It returns itself.
*
* @example
* ```ts
* expect<i32>(42).not.toBe(0, "42 is not 0");
*/
not: Expectation<T>;
/**
* The actual value of the expectation.
*/
actual: T | null;
}
/**
* This is called to stop the debugger. e.g. `node --inspect-brk asp`.
*/
declare function debug(): void;
/**
* This class contains a set of methods related to performance configuration.
*/
// @ts-ignore
declare class Performance {
/**
* This function call enables performance statistics gathering for the following test.
*
* @param {bool} enabled - The bool to indicate if performance statistics should be gathered.
*/
public static enabled(enabled: bool): void;
/**
* This function call sets the maximum number of samples to complete the following test.
*
* @param {f64} count - The maximum number of samples required.
*/
public static maxSamples(count: f64): void;
/**
* This function call sets the number of decimal places to round to for the following test.
*
* @param {i32} deicmalPlaces - The number of decimal places to round to
*/
public static roundDecimalPlaces(count: i32): void;
/**
* This function call will set the maximum amount of time that should pass before it can stop
* gathering samples for the following test.
*
* @param {f64} time - The ammount of time in milliseconds.
*/
public static maxTestRunTime(time: f64): void;
/**
* This function call enables gathering the average/mean run time of each sample for the following
* test.
*
* @param {bool} enabled - The bool to indicate if the average/mean should be gathered.
*/
public static reportAverage(enabled: bool): void;
/**
* This function call enables gathering the median run time of each sample for the following test.
*
* @param {bool} enabled - The bool to indicate if the median should be gathered.
*/
public static reportMedian(value: bool): void;
/**
* This function call enables gathering the standard deviation of the run times of the samples
* collected for the following test.
*
* @param {bool} enabled - The bool to indicate if the standard deviation should be gathered.
*/
public static reportStdDev(value: bool): void;
/**
* This function call enables gathering the largest run time of the samples collected for the
* following test.
*
* @param {bool} enabled - The bool to indicate if the max should be gathered.
*/
public static reportMax(value: bool): void;
/**
* This function call enables gathering the smallest run time of the samples collected for the
* following test.
*
* @param {bool} enabled - The bool to indicate if the min should be gathered.
*/
public static reportMin(value: bool): void;
/**
* This function call enables gathering the varaince of the samples collected for the following test.
*
* @param {bool} enabled - The bool to indicate if the variance should be calculated.
*/
public static reportVariance(value: bool): void;
}
/**
* Assemblyscript uses reference counting to perform garbage collection. This means when you
* allocate a managed object and return it, it's reference count is one. If another variable aliases
* it then the reference count goes up. This static class contains a few convenience methods for
* developers to test the current number of blocks allocated on the heap to make sure you aren't leaking
* references, e.i. keeping references to objects you expect to be collected.
*/
declare class RTrace {
/**
* This bool indicates if `RTrace` should call into JavaScript to obtain reference counts.
*/
public static enabled: bool;
/**
* This method returns the current number of active references on the heap.
*/
public static count(): i32;
/**
* This method starts a new refcounting group, and causes the next call to `RTrace.end(label)` to
* return a delta in reference counts on the heap.
*
* @param {i32} label - The numeric label for this refcounting group.
*/
public static start(label: i32): void;
/**
* This method returns a delta of how many new (positive) or collected (negative) are on the heap.
*
* @param {i32} label - The numeric label for this refcounting group.
*/
public static end(label: i32): i32;
/**
* This method returns the number of increments that have occurred over the course of a test
* file.
*/
public static increments(): i32;
/**
* This method returns the number of decrements that have occurred over the course of a test
* file.
*/
public static decrements(): i32;
/**
* This method returns the number of increments that have occurred over the course of a test
* group.
*/
public static groupIncrements(): i32;
/**
* This method returns the number of decrements that have occurred over the course of a test
* group.
*/
public static groupDecrements(): i32;
/**
* This method returns the number of increments that have occurred over the course of a test
* group.
*/
public static testIncrements(): i32;
/**
* This method returns the number of decrements that have occurred over the course of a test
* group.
*/
public static testDecrements(): i32;
/**
* This method returns the number of allocations that have occurred over the course of a test
* file.
*/
public static allocations(): i32;
/**
* This method returns the number of frees that have occurred over the course of a test
* file.
*/
public static frees(): i32;
/**
* This method returns the number of allocations that have occurred over the course of a test
* group.
*/
public static groupAllocations(): i32;
/**
* This method returns the number of frees that have occurred over the course of a test
* group.
*/
public static groupFrees(): i32;
/**
* This method returns the number of allocations that have occurred over the course of a test
* group.
*/
public static testAllocations(): i32;
/**
* This method returns the number of frees that have occurred over the course of a test
* group.
*/
public static testFrees(): i32;
/**
* This method triggers a garbage collection.
*/
public static collect(): void;
/**
* Get the class id of the pointer.
*
* @param {usize} pointer - The pointer.
* @returns {u32} - The class id of the allocated block.
*/
public static classIdOf(pointer: usize): u32;
/**
* Get the size of a block or buffer.
*
* @param {T} reference - The reference.
* @returns {u32} - The size of the allocated block.
*/
public static sizeOf<T>(reference: T): u32;
/**
* Get the currently allocated blocks.
*/
public static activeBlocks(): usize[];
/**
* Get the current groups allocated blocks.
*/
public static activeGroupBlocks(): usize[];
/**
* Get the current tests allocated blocks.
*/
public static activeTestBlocks(): usize[];
}
/**
* This class is static and contains private global values that contain metadata about the Actual
* value.
*
* @example
* ```ts
* Actual.report<string>("This is an expected string.");
* Actual.report<i32[]>([1, 2, 3]);
* Actual.report<u8>(42);
* ```
*/
declare class Actual {
/**
* This function performs reporting to javascript what the actual value of this expectation is.
*
* @param {T} actual - The actual value to be reported.
*/
public static report<T>(value: T): void;
/**
* Clear the actual value and release any private memory stored as a global.
*/
public static clear(): void;
}
/**
* This class is static and contains private global values that contain metadata about the Expected
* value.
*
* @example
* ```ts
* Expected.report<string>("This is an expected string.");
* Expected.report<i32[]>([1, 2, 3]);
* Expected.report<u8>(42, i32(true)); // not 42
* ```
*/
declare class Expected {
/**
* This function performs reporting to javascript what the expected value of this expectation is.
* It notifies javascript if the expectation is negated.
*
* @param {T} value - The actual value to be reported.
* @param {i32} negated - An indicator if the expectation is negated. Pass `1` to negate the
* expectation. (default: 0)
*/
public static report<T>(value: T, negated?: i32): void;
/**
* Clear the expected value and release any private memory stored as a global.
*/
public static clear(): void;
}

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backend-assemblyscript/step1-json-api/assembly/__tests__/twit.spec.ts Normal file
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import {handler} from "../main";
describe("example", () => {
it("can log some values to the console", () => {
log<string>("Hello world!"); // strings!
log<f64>(3.1415); // floats!
log<u8>(244); // integers!
log<u64>(0xFFFFFFFF); // long values!
log<string>(handler('{"hi": "hi"}'));
log<string>(handler('{"action": "Post", "msg": "Hello, Fluence!", "username": "fluencer"}'));
log<string>(handler('{"action": "Post", "msg": "Hello, fluencer!", "username": "John Doe"}'));
log<string>(handler('{"action": "Fetch"}'));
});
});

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backend-assemblyscript/step1-json-api/assembly/index.ts Normal file
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import {handler} from "./main";
import {loggedStringHandler} from "../node_modules/assemblyscript-sdk/assembly/index";
import {log} from "../node_modules/assemblyscript-sdk/assembly/logger";
// VM wrapper will put requests to memory through this function
export function allocate(size: usize) :i32 {
return __alloc(size, 0);
}
// VM wrapper will deallocate response from memory after handling it
export function deallocate(ptr: i32, size: usize): void {
__free(ptr);
}
// VM wrapper calls this function with a pointer on request in memory.
// Returns pointer on a response.
export function invoke(ptr: i32, size: i32): i32 {
// this function will parse a request as a string and return result string as a pointer in memory
// you can look on other functions in 'assemblyscript-sdk' library to username own types of requests and responses
return loggedStringHandler(ptr, size, handler, log);
}

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backend-assemblyscript/step1-json-api/assembly/main.ts Normal file
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import {Action, decode, PostRequest} from "./request";
import {PostResponse, FetchResponse, UnknownResponse} from "./response";
let messages = new Array<string>();
messages.push("hello");
messages.push("hi!");
// main handler for an application
export function handler(input: string): string {
let request = decode(input);
if (request.action == Action.Post) {
let post = request as PostRequest;
let response = new PostResponse(0);
return response.serialize()
} else if (request.action == Action.Fetch) {
let response = new FetchResponse(messages);
return response.serialize()
}
let response = new UnknownResponse();
return response.serialize();
}

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backend-assemblyscript/step1-json-api/assembly/request.ts Normal file
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import {JSONDecoder, JSONHandler} from "../node_modules/assemblyscript-json/assembly/decoder";
export enum Action {
Post,
Fetch,
Unknown
}
export abstract class Request {
public action: Action = Action.Unknown;
}
export class PostRequest extends Request {
public readonly msg: string;
public readonly username: string;
constructor(msg: string, username: string) {
super();
this.msg = msg;
this.username = username;
this.action = Action.Post;
}
}
export class FetchRequest extends Request {
constructor() {
super();
this.action = Action.Fetch;
}
}
export class UnknownRequest extends Request {
constructor() {
super();
this.action = Action.Unknown;
}
}
function string2Bytes(str: string): Uint8Array {
return Uint8Array.wrap(String.UTF8.encode(str));
}
export function decode(input: string): Request {
let jsonHandler = new RequestJSONEventsHandler();
let decoder = new JSONDecoder<RequestJSONEventsHandler>(jsonHandler);
let bytes = string2Bytes(input);
decoder.deserialize(bytes);
let action = jsonHandler.action;
let request: Request;
if (action == "Fetch") {
request = new FetchRequest();
} else if (action == "Post") {
request = new PostRequest(jsonHandler.msg, jsonHandler.username)
} else {
request = new UnknownRequest()
}
return request;
}
class RequestJSONEventsHandler extends JSONHandler {
public action: string;
public msg: string;
public username: string;
setString(name: string, value: string): void {
if (name == "action") {
this.action = value;
} else if (name == "msg") {
this.msg = value;
} else if (name == "username") {
this.username = value;
}
// json scheme is not strict, so we won't throw an error on excess fields
}
}

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import {JSONEncoder} from "../node_modules/assemblyscript-json/assembly/encoder";
export abstract class Response {
serialize(): string {
unreachable();
return "";
};
}
export class UnknownResponse extends Response {
constructor() {
super();
}
serialize(): string {
let encoder = new JSONEncoder();
encoder.pushObject(null);
encoder.setString("action", "Unknown");
encoder.setString("msg", "cannot username request");
encoder.popObject();
return encoder.toString();
}
}
export class PostResponse extends Response {
msgCount: i32;
constructor(msgCount: i32) {
super();
this.msgCount = msgCount;
}
serialize(): string {
let encoder = new JSONEncoder();
encoder.pushObject(null);
encoder.setString("action", "Post");
encoder.setInteger("count", this.msgCount);
encoder.popObject();
return encoder.toString();
}
}
export class FetchResponse extends Response {
posts: Array<string>;
constructor(posts: Array<string>) {
super();
this.posts = posts;
}
serialize(): string {
let encoder = new JSONEncoder();
encoder.pushObject(null);
encoder.setString("action", "Fetch");
encoder.pushArray("posts");
for (let i = 0; i < this.posts.length; i++) {
let message = this.posts[i];
encoder.pushObject(null);
encoder.setString("msg", message);
encoder.popObject();
}
encoder.popArray();
encoder.popObject();
return encoder.toString();
}
}

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backend-assemblyscript/step1-json-api/assembly/tsconfig.json Normal file
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{
"extends": "../node_modules/assemblyscript/std/assembly.json",
"include": [
"./**/*.ts"
]
}