Implement {% block ... %}

htmlcc/emitter/__init__.py

@@ -45,6 +45,16 @@ class Emitter:
 		
 		raise NotImplementedError()
 	
+	def start_block(self, block_name: str) -> None:
+		"""Called at {% block ... %}"""
+		
+		self.emit('void ' + block_name + '(void) {')
+	
+	def end_block(self) -> None:
+		"""Called at {% endblock %}"""
+		
+		self.emit('}')
+	
 	def start_page(self, page_name: str) -> None:
 		"""Called at {% page ... %}"""
 		

htmlcc/parser.py

@@ -27,7 +27,7 @@ class Parser:
 		self.cur_line_contains_handlebars = False
 		self.cur_line_contains_nonblank_literal = False
 		self.cur_line_leading_ws = ''  # Buffer for leading whitespace
-		self.in_page = False
+		self.in_html = False
 	
 	def parse(self) -> None:
 		"""Parse the entire file"""
@@ -70,15 +70,24 @@ class Parser:
 		
 		command = s[len('{%'):-len('%}')].strip()
 		
-		if command.startswith('page '):
+		if command.startswith('block '):
+			# {% block ... %}
+			block_name = command[len('block '):].strip()
+			self.emitter.start_block(block_name)
+			self.in_html = True
+		elif command == 'endblock':
+			# {% endblock %}
+			self.emitter.end_block()
+			self.in_html = False
+		elif command.startswith('page '):
 			# {% page ... %}
 			page_name = command[len('page '):].strip()
 			self.emitter.start_page(page_name)
-			self.in_page = True
+			self.in_html = True
 		elif command == 'endpage':
 			# {% endpage %}
 			self.emitter.end_page()
-			self.in_page = False
+			self.in_html = False
 		else:
 			raise SyntaxError(f'Unknown command "{command}"')
 	
@@ -134,7 +143,7 @@ class Parser:
 		s = self.buffer[:stop_reading_idx]
 		self.buffer = self.buffer[stop_reading_idx:]
 		
-		if not self.in_page:
+		if not self.in_html:
 			# Not in a page block!
 			if s.isspace():
 				# Suppress whitespace outside page blocks