Merge pull request #1516 from eclipse/jk_gh1515

[lsp] avoid negative positions
eclipse · Jun 4, 2020 · cd63d80 · cd63d80
2 parents c9c7400 + 4f3812f
commit cd63d80
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/org.eclipse.xtext.ide/src/org/eclipse/xtext/ide/server/LanguageServerImpl.java b/org.eclipse.xtext.ide/src/org/eclipse/xtext/ide/server/LanguageServerImpl.java
@@ -505,8 +505,8 @@ protected Diagnostic toDiagnostic(Issue issue) {
 		result.setSeverity(toDiagnosticSeverity(issue.getSeverity()));
 
 		// line and column numbers in LSP are 0-based
-		Position start = new Position(issue.getLineNumber() - 1, issue.getColumn() - 1);
-		Position end = new Position(issue.getLineNumberEnd() - 1, issue.getColumnEnd() - 1);
+		Position start = new Position(Math.max(0, issue.getLineNumber() - 1), Math.max(0, issue.getColumn() - 1));
+		Position end = new Position(Math.max(0, issue.getLineNumberEnd() - 1), Math.max(0, issue.getColumnEnd() - 1));
 		result.setRange(new Range(start, end));
 		return result;
 	}