match grammar

parser/src/grammar.pest

@@ -98,6 +98,7 @@ statement_list = { statement* }
 
 statement = _{
     expr_stmt
+  | match_stmt
   | var_decl_statement
   | assign_statement
   | if_stmt
@@ -144,6 +145,12 @@ for_stmt = {
     "for" ~ "(" ~ identifier ~ "in" ~ expr ~ ")" ~ statement
 }
 
+match_item = { pattern ~ "=>" ~ block }
+
+match_stmt = {
+    "match" ~ "(" ~ expr ~ ")" ~ match_item*
+}
+
 // ================= EXPRESSIONS =================
 tuple_type = { "(" ~ (type_expr ~ ("," ~ type_expr)*)? ~ ")" }
 path_type  = { static_path ~ ("<" ~ (type_expr ~ ("," ~ type_expr)*)? ~ ">")? }