breakpoints are ignored in debug mode

[Krysl]

test code from #74

If I have another file also have some breakpoints (such as Ztest.g, which is used by setBreakPointsRequest() later than test.g).
The breakpoints set by test.g will be clear by Ztest.g in this.debugger.clearBreakPoints(); ：

vscode-antlr4/src/frontend/AntlrDebugAdapter.ts

Lines 239 to 245 in bc5e746

	protected override setBreakPointsRequest(response: DebugProtocol.SetBreakpointsResponse,
	args: DebugProtocol.SetBreakpointsArguments): void {
	if (this.debugger) {
	this.debugger.clearBreakPoints();
	if (args.breakpoints && args.source.path) {
	const actualBreakpoints = args.breakpoints.map((sourceBreakPoint) => {
	const { validated, line, id } = this.debugger!.addBreakPoint(args.source.path!,

[Krysl]

path in this.contexts need to be normalized, otherwise entry.fileName === breakPoint.source may be false

vscode-antlr4/src/backend/GrammarDebugger.ts

Lines 485 to 489 in bc5e746

	private validateBreakPoint(breakPoint: IGrammarBreakPoint) {
	const context = this.contexts.find((entry) => {
	return entry.fileName === breakPoint.source;
	});

[Krysl]

a simple patch just work for myself

just to solve my own problem, without studying the code carefully, this patch may cause other problems.

 src/backend/facade.ts             | 2 ++
 src/frontend/AntlrDebugAdapter.ts | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/backend/facade.ts b/src/backend/facade.ts
index 88e712a..4f5a732 100644
--- a/src/backend/facade.ts
+++ b/src/backend/facade.ts
@@ -24,6 +24,7 @@ import {
 } from "../types.js";
 import { IATNGraphData } from "../webview-scripts/types.js";
 import { SentenceGenerator } from "./SentenceGenerator.js";
+import { Uri } from 'vscode';
 
 export class AntlrFacade {
     // Mapping file names to SourceContext instances.
@@ -362,6 +363,7 @@ export class AntlrFacade {
     }
 
     public createDebugger(fileName: string, actionFile: string, dataDir: string): GrammarDebugger | undefined {
+        fileName = Uri.file(fileName).fsPath;
         const context = this.getContext(fileName);
         if (!context) {
             return;
diff --git a/src/frontend/AntlrDebugAdapter.ts b/src/frontend/AntlrDebugAdapter.ts
index 24bf0d6..9e90e99 100644
--- a/src/frontend/AntlrDebugAdapter.ts
+++ b/src/frontend/AntlrDebugAdapter.ts
@@ -239,7 +239,6 @@ export class AntlrDebugSession extends DebugSession {
     protected override setBreakPointsRequest(response: DebugProtocol.SetBreakpointsResponse,
         args: DebugProtocol.SetBreakpointsArguments): void {
         if (this.debugger) {
-            this.debugger.clearBreakPoints();
             if (args.breakpoints && args.source.path) {
                 const actualBreakpoints = args.breakpoints.map((sourceBreakPoint) => {
                     const { validated, line, id } = this.debugger!.addBreakPoint(args.source.path!,

[mike-lischke]

Thanks for reporting the issue and providing a possible solution. I'll look at this later when I come back to the extension development.