Adding increment

mist-test/src/main.mist

@@ -7,6 +7,8 @@ pub mod event;
 void main() {
     var mut app_instance = new app::Application("mist-app");
 
+    i++;
+
     // greeting::register(&mut app_instance);
     // statistics::register(&mut app_instance);
 

parser/src/grammar.pest

@@ -497,8 +497,13 @@ as_px = {
 range_end_inc_px = { "..=" }
 range_end_exc_px = { ".." }
 
+increment_px = { "++" }
+decrement_px = { "++" }
+
 postfix = {
     field_px
+  | increment_px
+  | decrement_px
   | call_px
   | macro_call_px
   | struct_px

parser/src/parser/common/expr.rs

@@ -79,7 +79,6 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for Expression {
                 let mut primary_pair = None;
                 let mut postfix_pairs = Vec::new();
 
-                // Sort out flat layout components
                 for p in inner {
                     match p.as_rule() {
                         Rule::prefix => prefix_pairs.push(p),
@@ -95,7 +94,6 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for Expression {
                 );
                 let postfixes = collect_recovered::<Postfix, Postfix>(postfix_pairs.into_iter());
 
-                // Employs your exact original logic using the GetLength trait
                 if postfixes.len() > 0 || prefixes.len() > 0 {
                     ast_expr!(Expression::Fix {
                         initial: exp.map(Box::new),
@@ -183,6 +181,13 @@ impl<'a> TryFrom<pest::iterators::Pair<'a, Rule>> for Postfix {
 
             Rule::macro_call_px => Ok(Postfix::MacroCall(inner.as_str().to_string())),
 
+            Rule::as_px => {
+                ast_expr!(Postfix::As(inner.next().unwrap().try_into()))
+            }
+
+            Rule::range_end_inc_px => Ok(Postfix::RangeInclusive),
+            Rule::range_end_exc_px => Ok(Postfix::RangeExclusive),
+
             _ => AstError::bug_unimplemented(pair),
         }
     }