Feature/tempo pattern compiler

.agent/workflows/interactive-testing.md

@@ -6,12 +6,12 @@ To use a NodeJS interactive session to test your Tempo library, you can use the
 
 // turbo
 ```bash
-npx tsx -i --import ./test/repl.ts
+npx tsx --conditions=development -i --harmony-temporal --import ./bin/repl.ts
 ```
 
 
 ### Purpose
-This command starts a Node.js REPL (Read-Eval-Print Loop) while pre-loading the `Tempo` class and the `Temporal` polyfill into the global scope. This allows you to try different invocations of `Tempo` directly without writing a script.
+This command starts a Node.js REPL (Read-Eval-Print Loop) while pre-loading the `Tempo` class and the `Temporal` support into the global scope. This allows you to try different invocations of `Tempo` directly without writing a script.
 
 ### Usage Examples
 Once the REPL has started, you can run commands like:
@@ -32,4 +32,4 @@ t1.add({ days: 5 }).format('plain');
 ### Why this works
 - `npx tsx`: Uses the `tsx` runner to handle TypeScript files on the fly.
 - `-i`: Explicitly requests an interactive session.
-- `--import ./test/repl.ts`: Loads the helper script before starting the REPL, which attaches `Tempo` to `globalThis`.
+- `--import ./bin/repl.ts`: Loads the helper script before starting the REPL, which attaches `Tempo` to `globalThis`.

.github/workflows/ci.yml

@@ -34,39 +34,4 @@ jobs:
         run: npm test
         working-directory: packages/tempo
 
-  test-parse-prefilter:
-    name: Test with parse.preFilter enabled
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-    if: (github.event_name == 'push' || github.event_name == 'pull_request') && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/release/D' || github.event.pull_request.base.ref == 'main' || github.event.pull_request.base.ref == 'release/D')
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '22'
-          cache: 'npm'
-      - name: Install monorepo dependencies
-        run: npm ci
-        working-directory: ${{ github.workspace }}
-      - name: Run all tests with parse.preFilter
-        run: npm test
-        working-directory: packages/tempo
-        env:
-          TEMPO_PREFILTER_CI: 'true'
-      - name: Run end-to-end benchmark
-        run: npx tsx --conditions=development bench/bench.parse.prefilter.e2e.ts > bench-output.json 2> bench-error.log
-        working-directory: packages/tempo
-      - name: Upload benchmark output
-        if: always()
-        uses: actions/upload-artifact@v4
-        with:
-          name: bench-parse-prefilter-e2e
-          path: |
-            packages/tempo/bench-output.json
-            packages/tempo/bench-error.log
-      - name: Validate benchmark output
-        run: |
-          node -e "const r=require('./packages/tempo/bench-output.json');if(!r.success){console.error('Benchmark failed:',r.errors);process.exit(1)}else{console.log('Benchmark passed.')}"
-        working-directory: ${{ github.workspace }}
 

doc/main_branch_protection.md

@@ -0,0 +1,147 @@
+# Preventing Writes to the Main Branch Locally
+
+To prevent accidental writes (commits and pushes) to the `main` branch on your local workstation, you can use **Git Hooks**.
+
+
+## Example: Local Hooks for Main Branch Protection
+Set up local hooks to:
+1. **`pre-commit`**: Prevent direct commits to the `main` branch.
+2. **`pre-push`**: Prevent pushing changes to the remote `main` branch.
+
+### How to Override
+If you genuinely need to write to `main` (e.g., for an urgent fix), you have two options:
+- **Environment Variable**: Prepend the command with the override flag:
+  - `ALLOW_MAIN_COMMIT=true git commit -m "Urgent fix"`
+  - `ALLOW_MAIN_PUSH=true git push`
+- **Skip Hooks**: Use the standard Git flag:
+  - `git commit --no-verify`
+  - `git push --no-verify`
+
+---
+
+## Applying This Globally (Recommended)
+If you want this protection to apply to **every repository** on your workstation, you can configure a global hooks directory.
+
+### 1. Create a Global Hooks Directory
+Choose a location (e.g., `~/.git-hooks`) and move the hook scripts there:
+
+```bash
+mkdir -p ~/.git-hooks
+# Copy the hooks from your repository (replace /path/to/repo with your repo root or use the command below)
+# Example using git to find the repo root:
+cp $(git rev-parse --show-toplevel)/.git/hooks/pre-commit ~/.git-hooks/
+cp $(git rev-parse --show-toplevel)/.git/hooks/pre-push ~/.git-hooks/
+chmod +x ~/.git-hooks/*
+```
+
+
+### 2. Configure Git Globally (with Important Warning)
+Run this command to tell Git to use your new global hooks directory:
+
+```bash
+git config --global core.hooksPath ~/.git-hooks
+```
+
+**⚠️ Warning:** Setting `core.hooksPath` with the `--global` flag disables all per-repository `.git/hooks/*` scripts. This will break tools that rely on per-project hooks, such as Husky, lefthook, lint-staged, and others. Any hooks defined in individual repositories will be ignored as long as the global `core.hooksPath` is set.
+
+#### Recommended Alternatives
+
+- **Chain per-repo hooks from your global hook scripts:**
+  - Manually update your global hook scripts (in `~/.git-hooks/`) to call any existing hooks in each repository’s `.git/hooks/` directory, so you don’t lose project-specific logic.
+- **Scope the setting to individual repositories:**
+  - Instead of using `--global`, set the hooks path only for the current repository:
+    ```bash
+    git config core.hooksPath ~/.git-hooks
+    ```
+  - This way, only the current repo is affected, and other repos keep their own `.git/hooks/*` scripts.
+
+For more details, see the [Git documentation on `core.hooksPath`](https://git-scm.com/docs/git-config#Documentation/git-config.txt-corehookspath).
+
+---
+
+## Hook Implementation Details
+
+### pre-commit
+This script checks the current branch before every commit.
+
+```bash
+#!/bin/bash
+CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)
+if [ "$CURRENT_BRANCH" = "main" ]; then
+  if [ "$ALLOW_MAIN_COMMIT" != "true" ]; then
+    echo "❌ ERROR: Direct commit to 'main' branch is prohibited."
+    exit 1
+  fi
+fi
+```
+
+### pre-push
+This script checks the remote branch being pushed to.
+
+```bash
+#!/bin/bash
+while read local_ref local_sha remote_ref remote_sha
+do
+    if [ "$remote_ref" = "refs/heads/main" ]; then
+        if [ "$ALLOW_MAIN_PUSH" != "true" ]; then
+            echo "❌ ERROR: Pushing to 'main' branch is prohibited."
+            exit 1
+        fi
+    fi
+done
+```
+
+---
+
+## 🆘 I'm on 'main' and have changes, what do I do?
+
+If you've already made changes on `main` and the hook blocks your commit, **don't panic and don't drop your stash!** You can easily move your work to a new branch.
+
+### The "Magic" Command: Just Create a New Branch
+Git allows you to create and switch to a new branch while keeping your uncommitted changes.
+
+```bash
+# 1. Create and switch to a new branch
+git checkout -b feature/my-cool-feature
+# OR (modern syntax)
+git switch -c feature/my-cool-feature
+
+# 2. Now you can commit normally
+git add .
+git commit -m "My feature changes"
+```
+
+### If you want to be extra safe (The Stash Method)
+If you have a lot of complex changes and want to ensure `main` stays clean:
+
+```bash
+# 1. Save your work temporarily
+git stash
+
+# 2. Create and switch to the new branch
+git checkout -b feature/my-cool-feature
+
+# 3. Bring your changes back
+git stash pop
+
+# 4. Commit
+git commit -am "My feature changes"
+```
+
+### "I accidentally committed before I added the hook!"
+If you have local commits on `main` that you haven't pushed yet, you can move them to a new branch:
+
+```bash
+# 1. Create a new branch at your current (accidental) commit
+git branch feature/my-feature
+
+# 2. Make sure your local reference to 'origin/main' is up-to-date
+git fetch origin
+# 3. Reset your local 'main' back to where it should be (the remote version)
+# (Fetching first ensures you don't accidentally reset to a stale origin/main reference)
+git reset --hard origin/main
+
+# 4. Switch to your new branch to continue working
+git checkout feature/my-feature
+```
+

packages/tempo/doc/tempo.layout.md

@@ -81,6 +81,18 @@ When crafting raw regex, the following capture groups are used by the engine:
 - `per`: Period string offset
 - `unt`: Relative unit (e.g., `days`, `weeks`)
 
+## Prototyping with `Tempo.regexp()`
+
+You can use the static `Tempo.regexp()` method to "preview" how a layout string will be compiled by the engine. This is useful for testing custom regex logic before applying it to your configuration.
+
+```typescript
+// Expands {dd}, {sep}, {mm}, etc. into a final anchored RegExp
+const regex = Tempo.regexp('{dd}{sep}{mm}{sep}{yy}');
+
+console.log(regex.source); 
+// Output: ^(?<dd>...)(?:...)(?<mm>...)(?:...)(?<yy>...)$
+```
+
 ---
 
 ## Professional Services

packages/tempo/index.md

@@ -556,11 +556,12 @@ function focusActiveCard() {
 }
 
 .tempo-btn-brand {
-  background-color: var(--vp-c-brand-1);
+  background-color: #3498db;
   color: white;
 }
 .tempo-btn-brand:hover {
-  background-color: var(--vp-c-brand-2);
+  background-color: #2980b9;
+  color: white;
 }
 
 .tempo-btn-alt {

packages/tempo/package.json

@@ -54,8 +54,8 @@
       "default": "./dist/core.index.js"
     },
     "#tempo/enums": {
-      "development": "./src/support/tempo.enum.ts",
-      "default": "./dist/support/tempo.enum.js"
+      "development": "./src/support/support.enum.ts",
+      "default": "./dist/support/support.enum.js"
     },
     "#tempo/duration": {
       "development": "./src/module/module.duration.ts",
@@ -132,8 +132,8 @@
       "import": "./dist/tempo.index.js"
     },
     "./enums": {
-      "types": "./dist/support/tempo.enum.d.ts",
-      "import": "./dist/support/tempo.enum.js"
+      "types": "./dist/support/support.enum.d.ts",
+      "import": "./dist/support/support.enum.js"
     },
     "./extend/*": {
       "types": "./dist/plugin/extend/extend.*.d.ts",

packages/tempo/plan/RELEASE-D.md

@@ -5,20 +5,21 @@ This release focuses on modularizing and refactoring the parsing and pattern-mat
 
 ## Task Breakdown & Tracking
 
+
 ### Pattern Compiler + Cache Extraction
-- [ ] Extract `compileRegExp`, `setPatterns`, and helpers to new module
-- [ ] Integrate memoization/caching logic as needed
-- [ ] Refactor engine and consumers to use new module
-- [ ] Ensure compatibility with snippet/layout definitions
-- [ ] Add/expand unit tests for pattern logic and cache
-- [ ] Update documentation and references
+- [x] Extract `compileRegExp`, `setPatterns`, and helpers to new module (PatternCompiler)
+- [x] Integrate memoization/caching logic as needed (PatternCompiler cache)
+- [x] Refactor engine and consumers to use new PatternCompiler module
+- [x] Ensure compatibility with snippet/layout definitions
+- [x] Add/expand unit tests for pattern logic and cache
+- [x] Update documentation and references
 
 ### Alias Resolution Engine Extraction
-- [ ] Extract alias resolution logic to new module
-- [ ] Define interfaces for registration, lookup, collision
-- [ ] Refactor engine and plugins to use new APIs
-- [ ] Add/expand unit tests for alias/collision
-- [ ] Update documentation and references
+- [x] Extract alias resolution logic to new module
+- [x] Define interfaces for registration, lookup, collision
+- [x] Refactor engine and plugins to use new APIs
+- [x] Add/expand unit tests for alias/collision
+- [x] Update documentation and references
 
 ### Guard Builder Extraction (Assessment)
 - [ ] Identify all guard-building/token-ingestion logic

packages/tempo/src/discrete/discrete.parse.ts

@@ -16,8 +16,8 @@ import { defineInterpreterModule } from '../plugin/plugin.util.js';
 import type { Range, ResolvedRange } from '../plugin/plugin.type.js';
 import { sym, isTempo, TermError, getRuntime, Match } from '../support/support.index.js';
 import { markConfig, setPatterns, init, extendState } from '../support/support.index.js';
-import { setProperty } from '#tempo/support/tempo.util.js';
-import enums from '../support/tempo.enum.js';
+import { setProperty } from '#tempo/support/support.util.js';
+import enums from '../support/support.enum.js';
 import * as t from '../tempo.type.js';
 import type { Tempo } from '../tempo.class.js';
 

packages/tempo/src/engine/engine.alias.ts

@@ -86,17 +86,14 @@ export class AliasEngine {
 		this.#config = options.config;
 		this.#id = AliasEngine.#idCounter++;
 
-		if (this.#parent) {
-			if (!(this.#parent instanceof AliasEngine)) {
-				const msg = "Parent engine must be an instance of AliasEngine";
-				this.#logger?.error(this.#config, msg);
-				throw new TypeError(msg);
-			}
-
+		if (this.#parent instanceof AliasEngine) {
 			this.#depth = this.#parent.#depth + 1;
 			this.#state = Object.create(this.#parent.#state);			// create a new state object that inherits from the parent engine's state
 			this.#words = Object.create(this.#parent.#words);			// create a new words object that inherits from the parent engine's words for collision detection
 		} else {
+			if (this.#parent)
+				this.#logger?.error(this.#config, "Parent engine must be an instance of AliasEngine");
+
 			this.#depth = 0;
 			this.#state = Object.create(null);										// initialize an empty state for the root engine (no parent)
 			this.#words = Object.create(null);										// initialize an empty words object for the root engine (no parent)

packages/tempo/src/engine/engine.layout.ts

@@ -1,5 +1,6 @@
 import { ownEntries } from '#library/primitive.library.js';
-import { Token } from '#tempo/support/tempo.symbol.js';
+import { Token } from '#tempo/support/support.symbol.js';
+import { resolveLayoutOrderPure } from './engine.resolver.js';
 import type * as t from '../tempo.type.js';
 
 export type LayoutEntry = [symbol, string];
@@ -94,22 +95,8 @@ export function resolveLayoutOrder({ layout, monthDayLayouts, isMonthDay, layout
 	 classification ?? DEFAULT_LAYOUT_CLASS,
 	);
 
-		const layouts = ownEntries(ordered) as LayoutEntry[];
-		let changed = false;
-
-	monthDayLayouts.forEach(([dmy, mdy]) => {
-		const idx1 = layouts.findIndex(([key]) => key.description === dmy);
-		const idx2 = layouts.findIndex(([key]) => key.description === mdy);
-
-		if (idx1 === -1 || idx2 === -1) return;
-
-		const swap1 = idx1 < idx2 && isMonthDay;
-		const swap2 = idx1 > idx2 && !isMonthDay;
-		if (swap1 || swap2) {
-			[layouts[idx1], layouts[idx2]] = [layouts[idx2], layouts[idx1]];
-			changed = true;
-		}
-	});
+	const layouts = resolveLayoutOrderPure(ordered, monthDayLayouts, isMonthDay);
+	const changed = layouts.some((entry, idx) => entry[0] !== (ownEntries(ordered)[idx] as LayoutEntry)[0]);
 
 	if (changed) return Object.fromEntries(layouts) as Record<symbol, string>;
 	return ordered;