GH Action & error-handling.gv (#48)

Author: nagashi

.github/workflows/check_graphviz_source.yml

@@ -0,0 +1,41 @@
+# name: check-graphviz-file
+# ts-graphviz/setup-graphviz@v1 : https://github.com/ts-graphviz/setup-graphviz
+# tj-actions/changed-files@v9 : https://github.com/tj-actions/changed-files
+# Trigger the workflow on [pull_request, push]
+# but only for the main/master branch 
+on: 
+  pull_request: 
+    branches: [ master ]
+  push: 
+    branches: [ master]
+
+jobs:
+  check-graphviz-file:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - uses: ts-graphviz/setup-graphviz@v1
+
+      - name: Get specific changed file(s)
+        id: changed-files-specific 
+        uses: tj-actions/changed-files@v9
+        with :
+          files: |
+            error-handling.gv
+
+      - name: Create svg if the listed file changed
+        if: steps.changed-files-specific.outputs.only_changed == 'true'
+        run: |
+          dot -Tsvg error-handling.gv > error-handling.svg      
+
+      - name: 'Upload Artifact if the listed file changed'
+        if: steps.changed-files-specific.outputs.only_changed == 'true'
+        uses: actions/upload-artifact@v2
+        with:
+          name: error-handling
+          path: error-handling.svg
+          retention-days: 30

error-handling.gv

@@ -1,7 +1,9 @@
 digraph g {
     graph [
         rankdir = "LR";
-        label= <<u>Error Handling</u>>;
+        // title
+        labelloc= "t";
+        label= <<b><u>Error Handling</u></b>>;
     ];
 
     node [
@@ -13,7 +15,6 @@ digraph g {
         label = "&lt; T &gt;"
         shape = plain
         fontsize=9
-        PORT = "f0"
         id = 0
     ];
 
@@ -49,17 +50,16 @@ digraph g {
         id = 4
     ];
 
-    // Layout
-    
+    // Layout      
     // T to Option {reverse direction i.e. <-}
-    {T:f0 -> Option:f0 [
+    {T -> Option:f0 [
         dir=back
         label="Some(T)\nunwrap()"
         fontsize=8
     ];
     } 
 
-    Result:f0 -> T:f0 [
+    Result:f0 -> T [
         label="Ok(T)\nunwrap()" 
         fontsize=8
     ];