Directive implementation

ptulsconv/docparser/tag_compiler.py

@@ -61,10 +61,11 @@ class TagCompiler:
 
     def compile_events(self) -> Iterator[Event]:
         step0 = self.parse_data()
-        step1 = self.apply_appends(step0)
-        step2 = self.collect_time_spans(step1)
-        step3 = self.apply_tags(step2)
-        for datum in step3:
+        step1 = self.filter_out_directives(step0)
+        step2 = self.apply_appends(step1)
+        step3 = self.collect_time_spans(step2)
+        step4 = self.apply_tags(step3)
+        for datum in step4:
             yield Event(clip_name=datum[0], track_name=datum[1], session_name=datum[2],
                         tags=datum[3], start=datum[4], finish=datum[5])
 
@@ -77,6 +78,14 @@ class TagCompiler:
 
         return retval
 
+    def filter_out_directives(self, clips : Iterator[Intermediate]) -> Iterator[Intermediate]:
+        for clip in clips:
+            if clip.clip_tag_mode == 'Directive':
+                continue
+            else:
+                yield clip
+
+
     @staticmethod
     def _coalesce_tags(clip_tags: dict, track_tags: dict,
                        track_comment_tags: dict,

ptulsconv/docparser/tagged_string_parser_visitor.py

@@ -1,5 +1,5 @@
 from parsimonious import NodeVisitor, Grammar
-from typing import Dict, Optional
+from typing import Dict, Union
 from enum import Enum
 
 
@@ -7,6 +7,7 @@ class TagPreModes(Enum):
     NORMAL = 'Normal'
     APPEND = 'Append'
     TIMESPAN = 'Timespan'
+    DIRECTIVE = 'Directive'
 
 
 tag_grammar = Grammar(
@@ -65,6 +66,8 @@ class TagListVisitor(NodeVisitor):
             return TagPreModes.TIMESPAN
         elif node.text.startswith('&'):
             return TagPreModes.APPEND
+        elif node.text.startswith('!'):
+            return TagPreModes.DIRECTIVE
         else:
             return TagPreModes.NORMAL