Paredit Multicursor - Testing Utils - textNotation changes and diagnostic utils

CHANGELOG.md

@@ -4,6 +4,9 @@ Changes to Calva.
 
 ## [Unreleased]
 
+- Internal textNotation testing system supports multiple selections, addressing [#610](https://github.com/BetterThanTomorrow/calva/issues/610)
+- Add new Calva development utility commands to create textNotations from open buffers, and vice versa
+
 ## [2.0.415] - 2024-03-08
 
 - Refactor some internal document and selection APIs in preparation for multiple selections, addressing [#610](https://github.com/BetterThanTomorrow/calva/issues/610)

package.json

@@ -1170,6 +1170,16 @@
         "title": "Toggle nREPL Logging Enabled",
         "category": "Calva Diagnostics"
       },
+      {
+        "command": "calva.diagnostics.printTextNotationFromDocument",
+        "title": "Print TextNotation from the current document to Calva says",
+        "category": "Calva Diagnostics"
+      },
+      {
+        "command": "calva.diagnostics.createDocumentFromTextNotation",
+        "title": "Create a new Clojure Document from TextNotation",
+        "category": "Calva Diagnostics"
+      },
       {
         "command": "calva.linting.resolveMacroAs",
         "title": "Resolve Macro As",

src/cursor-doc/model.ts

@@ -1,7 +1,8 @@
 import { Scanner, Token, ScannerState } from './clojure-lexer';
 import { LispTokenCursor } from './token-cursor';
 import { deepEqual as equal } from '../util/object';
-import { isUndefined } from 'lodash';
+import { isNumber, isUndefined } from 'lodash';
+import { TextDocument, Selection } from 'vscode';
 
 let scanner: Scanner;
 
@@ -65,22 +66,55 @@ export class ModelEdit<T extends ModelEditFunction> {
 export class ModelEditSelection {
   private _anchor: number;
   private _active: number;
-
-  constructor(anchor: number, active?: number) {
-    this._anchor = anchor;
-    if (active !== undefined) {
-      this._active = active;
+  private _start: number;
+  private _end: number;
+  private _isReversed: boolean;
+
+  constructor(anchor: number, active?: number, start?: number, end?: number, isReversed?: boolean);
+  constructor(selection: Selection, doc: TextDocument);
+  constructor(
+    anchorOrSelection: number | Selection,
+    activeOrDoc?: number | TextDocument,
+    start?: number,
+    end?: number,
+    isReversed?: boolean
+  ) {
+    if (isNumber(anchorOrSelection)) {
+      const anchor = anchorOrSelection;
+      this._anchor = anchor;
+      if (activeOrDoc !== undefined && isNumber(activeOrDoc)) {
+        this._active = activeOrDoc;
+      } else {
+        this._active = anchor;
+      }
+      const _isReversed = isReversed ?? this._anchor > this._active;
+      this._isReversed = _isReversed;
+      this._start = start ?? Math.min(anchor, this._active);
+      this._end = end ?? Math.max(anchor, this._active);
     } else {
-      this._active = anchor;
+      const { active, anchor, start, end, isReversed } = anchorOrSelection;
+      const doc = activeOrDoc as TextDocument;
+      this._active = doc.offsetAt(active);
+      this._anchor = doc.offsetAt(anchor);
+      this._start = doc.offsetAt(start);
+      this._end = doc.offsetAt(end);
+      this._isReversed = isReversed;
     }
   }
 
+  private _updateDirection() {
+    this._start = Math.min(this._anchor, this._active);
+    this._end = Math.max(this._anchor, this._active);
+    this._isReversed = this._active < this._anchor;
+  }
+
   get anchor() {
     return this._anchor;
   }
 
   set anchor(v: number) {
     this._anchor = v;
+    this._updateDirection();
   }
 
   get active() {
@@ -89,11 +123,83 @@ export class ModelEditSelection {
 
   set active(v: number) {
     this._active = v;
+    this._updateDirection();
+  }
+
+  get start() {
+    this._updateDirection();
+    return this._start;
+  }
+
+  get end() {
+    this._updateDirection();
+    return this._end;
+  }
+
+  get isCursor() {
+    return this.anchor === this.active;
+  }
+
+  get isSelection() {
+    return this.anchor !== this.active;
+  }
+
+  get isReversed() {
+    this._updateDirection();
+    return this._isReversed;
+  }
+
+  set isReversed(isReversed: boolean) {
+    this._isReversed = isReversed;
+    if (this._isReversed) {
+      this._start = this._active;
+      this._end = this._anchor;
+    } else {
+      this._start = this._anchor;
+      this._end = this._active;
+    }
+  }
+
+  get distance() {
+    return this._end - this._start;
   }
 
   clone() {
     return new ModelEditSelection(this._anchor, this._active);
   }
+
+  /**
+   * Returns a simple 2-item tuple representing the
+   * [leftmost/earliest/start position, rightmost, farthest, end position].
+   */
+  get asRange() {
+    return [this.start, this.end] as [start: number, end: number];
+  }
+
+  /**
+   * Same as `ModelEditSelection.asRange` but with the leftmost item being the anchor position, and the rightmost item
+   * being the active position. This way, you can tell if it's reversed by checking if the leftmost item is greater
+   * than the rightmost item.
+   */
+  get asDirectedRange() {
+    return [this.anchor, this.active] as [anchor: number, active: number];
+  }
+
+  /**
+   * Mutates itself!
+   * Very basic, offsets both active/anchor by a positive or negative number lol, with no attempt at clamping.
+   *
+   * Returns self for convenience
+   * @param offset number
+   */
+  reposition(offset: number) {
+    this.active += offset;
+    this.anchor += offset;
+
+    this._updateDirection();
+
+    return this;
+  }
 }
 
 export type ModelEditOptions = {
@@ -105,6 +211,7 @@ export type ModelEditOptions = {
 
 export interface EditableModel {
   readonly lineEndingLength: number;
+  readonly lineEnding: string;
 
   /**
    * Performs a model edit batch.
@@ -135,6 +242,10 @@ export class LineInputModel implements EditableModel {
   /** How many characters in the line endings of the text of this model? */
   constructor(readonly lineEndingLength: number = 1, private document?: EditableDocument) {}
 
+  get lineEnding() {
+    return this.lineEndingLength === 1 ? '\n' : '\r\n';
+  }
+
   /** The input lines. */
   lines: TextLine[] = [new TextLine('', this.getStateForLine(0))];
 

src/doc-mirror/index.ts

@@ -25,6 +25,10 @@ export class DocumentModel implements EditableModel {
     this.lineInputModel = new LineInputModel(this.lineEndingLength);
   }
 
+  get lineEnding() {
+    return this.lineEndingLength == 2 ? '\r\n' : '\n';
+  }
+
   edit(modelEdits: ModelEdit<ModelEditFunction>[], options: ModelEditOptions): Thenable<boolean> {
     const editor = utilities.getActiveTextEditor(),
       undoStopBefore = !!options.undoStopBefore;
@@ -146,21 +150,28 @@ export class MirroredDocument implements EditableDocument {
     });
   }
 
-  set selections(selections: ModelEditSelection[]) {
+  get selections(): ModelEditSelection[] {
     const editor = utilities.getActiveTextEditor(),
-      document = editor.document,
-      anchor = document.positionAt(selections[0].anchor),
-      active = document.positionAt(selections[0].active);
-    editor.selections = [new vscode.Selection(anchor, active)];
-    editor.revealRange(new vscode.Range(active, active));
+      document = editor.document;
+    return editor.selections.map((sel) => {
+      const anchor = document.offsetAt(sel.anchor),
+        active = document.offsetAt(sel.active);
+      return new ModelEditSelection(anchor, active);
+    });
   }
 
-  get selections(): ModelEditSelection[] {
+  set selections(selections: ModelEditSelection[]) {
     const editor = utilities.getActiveTextEditor(),
-      document = editor.document,
-      anchor = document.offsetAt(editor.selections[0].anchor),
-      active = document.offsetAt(editor.selections[0].active);
-    return [new ModelEditSelection(anchor, active)];
+      document = editor.document;
+    editor.selections = selections.map((selection) => {
+      const anchor = document.positionAt(selection.anchor),
+        active = document.positionAt(selection.active);
+      return new vscode.Selection(anchor, active);
+    });
+
+    const primarySelection = selections[0];
+    const active = document.positionAt(primarySelection.active);
+    editor.revealRange(new vscode.Range(active, active));
   }
 
   public getSelectionText() {