fix: Add types first and distinguish them semantically. (#15)

Rather than via some format on the name of the identifier, this commit
  changes the construction of Dispatcher to assume that functions are
  implementations and other objects are type specifiers.

  Also installs all types first, before any implementations.
  Resolves #3.
  Resolves #12.

Reviewed-on: #15
Co-authored-by: Glen Whitney <glen@studioinfinity.org>
Co-committed-by: Glen Whitney <glen@studioinfinity.org>

src/Complex/type.ts

@@ -6,6 +6,7 @@ import type {
 export type Complex<T> = { re: T; im: T; }
 
 export const Complex_type = {
+   name: 'Complex', // just until we have reflection to tell us
    test: <T>(dep: { testT: (z: unknown) => z is T }) =>
       (z: unknown): z is Complex<T> =>
          typeof z === 'object' && z != null && 're' in z && 'im' in z

src/core/Dispatcher.ts

@@ -25,6 +25,7 @@ export function joinTypes(a: TypeName, b: TypeName) {
 // Now types used in the Dispatcher class itself
 
 type TypeSpecification = {
+   name: string, // just until we get reflection, then we can remove this property
    before?: TypeName[],
    test: ((x: unknown) => boolean)
       | ((d: DependenciesType) => (x: unknown) => boolean),
@@ -53,23 +54,24 @@ export class Dispatcher {
       //TODO: implement me
    }
    constructor(collection: SpecificationsGroup) { 
+      const implementations = []
       for (const key in collection) {
          console.log('Working on', key)
          for (const identifier in collection[key]) {
-            console.log('Handling', key, ':', identifier)
-            const parts = identifier.split('_')
-            if (parts[parts.length - 1] === 'type') {
-               parts.pop()
-               const name = parts.join('_')
-               this.installType(
-                  name, collection[key][identifier] as TypeSpecification)
+            const item = collection[key][identifier]
+            if (typeof item === 'function') {
+               implementations.push([key, identifier, item])
             } else {
-               const name = parts[0]
-               this.installSpecification(
-                  name, ['dunno'], 'unsure', {},
-                  collection[key][identifier] as Function)
+               console.log('Handling type', key, ':', identifier)
+               this.installType(
+                  item.name, collection[key][identifier] as TypeSpecification)
             }
          }
       }
+      for (const trio of implementations) {
+         const [k, id, imp] = trio
+         console.log('Handling implementation', id, 'from', k)
+         this.installSpecification(id, ['dunno'], 'unsure', {}, imp)
+      }
    }
 }

src/numbers/type.ts

@@ -1,6 +1,7 @@
 import type { Signature } from '../interfaces/type.js'
 
 export const number_type = {
+   name: 'number', // just until we have reflection to tell us
    before: ['Complex'],
    test: (n: unknown): n is number => typeof n === 'number',
    from: { string: (s: string) => +s }