Grammar Backus-Naur Form definition for test and use statement.

nthnn · nthnn · commit 03abb372fc07 · 2024-08-01T02:42:57.000+08:00
diff --git a/grammar.bnf b/grammar.bnf
@@ -13,12 +13,23 @@ DIGIT				:=
 global				:= (statement)*
 
 statement			:=
+    use_stmt        |
+    test_stmt       |
 	break_stmt		|
 	continue_stmt	|
 	ret_stmt		|
 	throw_stmt		|
 	expr_stmt
 
+use_stmt            :=
+    "use" expression
+    [expression ("," expression)*]
+    ";"
+
+test_stmt           :=
+    "test" "(" expression ")"
+    expression ";"
+
 break_stmt			:= "break" ";"
 continue_stmt		:= "continue" ";"
 ret_stmt			:= "ret" expression ";"
diff --git a/site/grammar.pug b/site/grammar.pug
@@ -123,12 +123,23 @@ html(lang="en")
                   | global				:= (statement)*
                   |
                   | statement			:=
+                  |     use_stmt        |
+                  |     test_stmt       |
                   | 	break_stmt		|
-                  | 	continue_stmt		|
-                  | 	ret_stmt		|
-                  | 	throw_stmt		|
+                  | 	continue_stmt   |
+                  | 	ret_stmt        |
+                  | 	throw_stmt      |
                   | 	expr_stmt
                   |
+                  | use_stmt            :=
+                  |    &quot;use&quot; expression
+                  |    [expression (&quot;,&quot; expression)*]
+                  |    &quot;;&quot;
+                  |
+                  | test_stmt           :=
+                  |     "test" "(" expression ")"
+                  |     expression ";"
+                  |
                   | break_stmt			:= &quot;break&quot; &quot;;&quot;
                   | continue_stmt			:= &quot;continue&quot; &quot;;&quot;
                   | ret_stmt			:= &quot;ret&quot; expression &quot;;&quot;
