feat(marbletoken): define tokens for marble diagram DSL

Author: kwonoj

src/marbles/ObservableMarbleToken.ts

@@ -0,0 +1,43 @@
+/**
+ * Defines tokens for marble diagram DSL to represent Observables.
+ *
+ */
+export enum ObservableMarbleToken {
+  /**
+   * The passage of time without any events
+   */
+  TIMEFRAME = '-',
+  /**
+   * Error
+   */
+  ERROR = '#',
+  /**
+   * Whitespace does nothing, for aligning between marbles
+   *
+   */
+  NOOP = ' ',
+  /**
+   * Indicates start emitting simultaneouly.
+   * Values between SIMULTANEOUS_START and SIMULTANEOUS_END considered to be
+   * emitted simultaneously.
+   *
+   */
+  SIMULTANEOUS_START = '(',
+  /**
+   * Indicates end emitting simultaneouly.
+   * Values between SIMULTANEOUS_START and SIMULTANEOUS_END considered to be
+   * emitted simultaneously.
+   */
+  SIMULTANEOUS_END = ')',
+  /**
+   * Indicates time passed multiple times of TIMEFRAME.
+   * This token is single token, actual usage should be like
+   * `...${n}...` , represents timeframe of `-` * n times.
+   *
+   */
+  TIMEFRAME_EXPAND = '.',
+  /**
+   * Completion of the stream
+   */
+  COMPLETE = '|'
+}

src/marbles/SubscriptionMarbleToken.ts

@@ -0,0 +1,16 @@
+/**
+ * Defines tokens for marble diagram DSL to represent Observable subscriptions.
+ *
+ */
+export enum SubscriptionMarbleToken {
+  /**
+   * Subscription started
+   */
+
+  SUBSCRIBE = '^',
+  /**
+   * Unsubscribed.
+   *
+   */
+  UNSUBSCRIBE = '!'
+}