Channel name can be empty string (#100)

* Update changelog and version

CHANGELOG.md

@@ -7,13 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.15.0] - 2022-08-20
+
 ### Added
 
 - BCD values are now checked when decoding physical values
 
 ### Changes
 
 - Master and slaves declarations are now optional
+- Channel name can now be any string, including an empty string instead of requiring a valid C
+  identifier.
 
 ## [0.14.0] - 2022-02-26
 

ldfparser/grammar.py

@@ -27,6 +27,10 @@ def ldf_integer(self, tree):
     def ldf_float(self, tree):
         return self.parse_real_or_integer(tree[0])
 
+    def ldf_channel_name(self, tree):
+        # This gets rid of quote marks
+        return tree[0][1:-1]
+
     def start(self, tree):
         return tree[0]
 

ldfparser/grammars/ldf.lark

@@ -6,13 +6,14 @@ ldf_identifier: CNAME
 ldf_version: C_VERSION
 ldf_integer: C_INT
 ldf_float: C_FLOAT
+ldf_channel_name: ESCAPED_STRING
 
 // LIN 2.1 Specification, section 9.2.1
 header_lin_description_file: "LIN_description_file" ";"
 header_protocol_version: "LIN_protocol_version" "=" "\"" ldf_version "\"" ";"
 header_language_version: "LIN_language_version" "=" "\"" ldf_version "\"" ";"
 header_speed: "LIN_speed" "=" ldf_float "kbps" ";"
-header_channel: "Channel_name" "=" "\"" ldf_identifier "\"" ";"
+header_channel: "Channel_name" "=" ldf_channel_name ";"
 
 // LIN 2.1 Specification, section 9.2.2
 nodes: "Nodes" "{" nodes_master? nodes_slaves? "}"

setup.cfg

@@ -1,2 +1,2 @@
 [metadata]
-version = 0.14.0
+version = 0.15.0

tests/ldf/no_signal_subscribers.ldf

@@ -8,6 +8,7 @@ LIN_description_file;
 LIN_protocol_version = "2.2";
 LIN_language_version = "2.2";
 LIN_speed =  19.2 kbps;
+Channel_name = "";
 
 Nodes {
     Master: master, 5.0 ms, 0.1 ms;