Adding signal mapping file

package.json

@@ -61,6 +61,11 @@
           "type": "boolean",
           "default": false,
           "description": "Keep ModelSim result files for debugging."
+        },
+        "modelsimWave.interMediateSignalMapping": {
+          "type": "string",
+          "default": "",
+          "description": "Path to a signal name translation file"
         }
       }
     }

src/extension.ts

@@ -1,10 +1,12 @@
 import * as vscode from 'vscode';
 import * as path from 'path';
 import { promises as fsp } from 'fs';
+import * as os from 'os';
 
 import { MyWebviewViewProvider } from './wave_action';
 import { sendAndAwait } from './eda_connect';
 import { requestModuleTree, addWave } from './wave_editor';
+import { loadMappingJson } from './signal_mapping';
 
 // Tracks the most recent hover position per document, with a timestamp.
 export const lastHoverByDoc = new Map<string, { pos: vscode.Position; at: number }>();
@@ -14,6 +16,8 @@ let statusItem: vscode.StatusBarItem;
 const CTX = 'modelsim.mode';
 export let waveMode = false;
 
+export let waveMappingEnable = false;
+
 // Hold MANY instance paths per module name, e.g. queue_slot -> ["/test/...[0]", "/test/...[1]", ...]
 
 const svSelectors: vscode.DocumentSelector = [
@@ -30,6 +34,45 @@ async function toggleWaveMode() {
   statusItem.tooltip = waveMode
     ? 'Wave Debug Mode — click to switch to Edit Mode'
     : 'Edit Mode — click to switch to Wave Debug Mode';
+  
+    // Load Wave Mapping
+  if (waveMode) {
+    const cfg = vscode.workspace.getConfiguration('modelsimWave');
+    let p = cfg.get<string>('interMediateSignalMapping')?.trim() ?? '';
+
+    console.log("File defined: ", p);
+
+    if (!p) {
+      waveMappingEnable = false;
+      return;
+    }
+
+    waveMappingEnable = true;
+
+    // Expand ~ to home
+    if (p.startsWith('~')) {
+      p = path.join(os.homedir(), p.slice(1));
+    }
+
+    if (p.startsWith('${workspaceFolder}')) {
+      const wf = vscode.workspace.workspaceFolders?.[0];
+      if (!wf) return;
+      const rel = p.replace('${workspaceFolder}', '');
+      loadMappingJson(vscode.Uri.file(path.join(wf.uri.fsPath, rel)));
+      return;
+    }
+
+    // Absolute path?
+    if (path.isAbsolute(p)) {
+      loadMappingJson(vscode.Uri.file(p));
+      return;
+    }
+
+    // Otherwise, treat as path relative to the first workspace folder
+    const wf = vscode.workspace.workspaceFolders?.[0];
+    if (!wf) return;
+      loadMappingJson(vscode.Uri.file(path.join(wf.uri.fsPath, p)));
+  }
 }
 
 export async function activate(context: vscode.ExtensionContext) {

src/signal_mapping.ts

@@ -0,0 +1,33 @@
+import * as vscode from "vscode";
+
+export const globalMap: Map<string, string> = new Map();
+
+export async function loadMappingJson(uri: vscode.Uri): Promise<void> {
+  const bytes = await vscode.workspace.fs.readFile(uri);
+  const text = new TextDecoder('utf-8').decode(bytes);
+
+  let raw: unknown;
+  try {
+    raw = JSON.parse(text);
+  } catch (err: any) {
+    throw new Error(`Failed to parse JSON: ${err?.message ?? String(err)}`);
+  }
+
+  if (typeof raw !== 'object' || raw === null || Array.isArray(raw)) {
+    throw new Error(`Expected a JSON object at top level (key → value mapping).`);
+  }
+
+  const obj = raw as Record<string, unknown>;
+
+  globalMap.clear();
+
+  for (const [key, value] of Object.entries(obj)) {
+    if (typeof value !== 'string') {
+      console.warn(`⚠️ Skipping key '${key}' because its value is not a string.`);
+      continue;
+    }
+    globalMap.set(key, value);
+  }
+
+  console.log(`✅ Loaded ${globalMap.size} valid mappings from ${uri.fsPath}`);
+}

src/wave_editor.ts

@@ -1,8 +1,9 @@
 import * as vscode from 'vscode';
 import * as path from 'path';
 
-import { waveMode, lastHoverByDoc, HOVER_FRESH_MS } from './extension';
+import { waveMode, lastHoverByDoc, waveMappingEnable, HOVER_FRESH_MS } from './extension';
 import { sendAndAwait } from './eda_connect';
+import { globalMap } from './signal_mapping';
 
 export let moduleTree: Record<string, { module: string[], last: number }> = {};
 
@@ -69,7 +70,7 @@ export async function addWave(
     return;
   }
 
-  const tokenText = editor.document.getText(wordRange);
+  let tokenText = editor.document.getText(wordRange);
   const isVariable = await looksLikeVariable(editor, position);
   if (!isVariable) {
     const choice = await vscode.window.showWarningMessage(
@@ -80,6 +81,13 @@ export async function addWave(
     if (choice !== 'Add') return;
   }
 
+  if (waveMappingEnable) {
+    if (globalMap.has(tokenText)) {
+      tokenText = globalMap.get(tokenText)!;  // "!" asserts it's not undefined
+      // do something with truc
+    }
+  }
+
   // Load module tree once per session
   if (Object.keys(moduleTree).length === 0) {
     moduleTree = await requestModuleTree(sharedDir, topScope, timeoutMs);