AST: fix fileformats in pir inspector

Author: sipma

chb/app/CHVersion.py

@@ -1 +1 @@
-chbversion: str = "0.3.0-20250819"
+chbversion: str = "0.3.0-20250821"

chb/ast/ASTViewer.py

@@ -158,7 +158,10 @@ def visit_block_stmt(self, stmt: AST.ASTBlock) -> None:
             self.add_edge(name, self.label_name(label))
             label.accept(self)
         for s in stmt.stmts:
-            self.add_edge(name, self.stmt_name(s))
+            if s.is_stmt_label:
+                print("DEBUG: stmt-label in list of stmts at location: " + str(s.locationid))
+            else:
+                self.add_edge(name, self.stmt_name(s))
             s.accept(self)
 
     def visit_loop_stmt(self, stmt: AST.ASTLoop) -> None:

chb/ast/pirinspector

@@ -89,7 +89,7 @@ def parse() -> argparse.Namespace:
         "--fileformat",
         help="desired format for output file (default is pdf)",
         choices=["pdf", "png"],
-        default=["pdf"]
+        default="pdf"
     )
     viewastcmd.add_argument(
         "-o",
@@ -114,7 +114,7 @@ def parse() -> argparse.Namespace:
         "--fileformat",
         help="desired format for output file (default is pdf)",
         choices=["pdf", "png"],
-        default=["pdf"]
+        default="pdf"
     )
     viewstmtcmd.add_argument(
         "-o", "--output",
@@ -139,7 +139,7 @@ def parse() -> argparse.Namespace:
         "--fileformat",
         help="desired format for output file (default is pdf)",
         choices=["pdf", "png"],
-        default=["pdf"]
+        default="pdf"
     )
     viewinstrcmd.add_argument(
         "-o",