fixed examples, fixed bug due to VType changes

examples/amogus.mers

@@ -9,7 +9,7 @@ fn random(min int max int) {
 }
 fn rnd() {
     r := random(5 15)
-    switch r {
+    switch! r {
         int r r
         [] [] 10
     }

examples/gui.mers

@@ -1,51 +0,0 @@
-lib mers_libs/gui
-
-base = gui_init()
-column = base.gui_add(Column: [])
-
-text = column.gui_add(Text: "Welcome to MERS GUI!")
-
-button = column.gui_add(Button: "This is a button.")
-second_button = column.gui_add(Button: "This is a second button.")
-
-text_state = -2
-second_text = column.gui_add(Text: "press the button above to remove this text!")
-
-loop {
-    for event gui_updates() {
-        switch! event {
-            ButtonPressed([int ...]) {
-                e = event.noenum()
-                match e {
-                    &e.eq(&button) println("First button pressed")
-                    &e.eq(&second_button) {
-                        // don't match on text_state because we need to change the original from inside the match statement
-                        state = text_state
-                        match state {
-                            // the first, third, fifth, ... time the button is pressed: remove the text
-                            text_state.mod(2).eq(0) {
-                                if text_state.eq(-2) {
-                                    // the first time the button is pressed
-                                    text_state = 0
-                                    set_title("keep pressing the button!")
-                                }
-                                second_text.gui_remove()
-                            }
-                            // the 2nd, 4th, 6th, ... time the button is pressed: add the text back
-                            text_state.eq(1) second_text = column.gui_add(Text: "i'm back!")
-                            text_state.eq(3) second_text = column.gui_add(Text: "you can't fully get rid of me!")
-                            true {
-                                second_text = column.gui_add(Text: "i always come back")
-                                // restart (set text_state to 0)
-                                text_state = -1
-                            }
-                        }
-                        text_state = text_state.add(1)
-                    }
-                    true println("A different button was pressed (unreachable)")
-                }
-            }
-        }
-    }
-    []
-}

examples/http.mers

@@ -1,17 +0,0 @@
-lib mers_libs/http_requests
-
-t = thread(() {
-    // because this downloads for so long, the println() will appear after the other one.
-    http_get("https:\//raw.githubusercontent.com/dwyl/english-words/master/words.txt").assume_no_enum()
-    println("got words from word list!")
-})
-
-sleep(0.1)
-
-// this will finish before the thread does.
-http_get("https:\//github.com/").assume_no_enum()
-println("got github start page as html")
-
-t.await()
-
-http_get("not a url").debug()

examples/iterators.mers

@@ -1,4 +1,4 @@
-fn map_string_to_int(list [string ...] func fn((string int))) {
+fn map_string_to_int(list [string ...], func fn((string) int)) {
     // return a function that can be used as an iterator
     () {
         // this function will be called by the for loop

examples/mersrandr.mers

@@ -1,74 +0,0 @@
-lib mers_libs/gui
-
-// GUI for xrandr, because arandr doesn't let me change the framerates.
-// [ WIP ]
-
-base = gui_init()
-
-set_title("MersRandr")
-
-randr_output = run_command("xrandr")
-
-switch! randr_output {
-    Err(string) {
-        println(randr_output.noenum())
-    }
-    [[]/int string string] {
-        lines = randr_output.1.regex(".*")
-        screen_name = ""
-        screen_resolutions = [["" ["" ...]] ...]
-        screens = [
-            [
-                screen_name
-                screen_resolutions
-            ]
-        ...]
-        &screen_resolutions.pop()
-        &screens.pop()
-        for line lines {
-            if line.starts_with("Screen ") {
-                // ignore
-            } else if line.starts_with("   ") {
-                // split at spaces (and ignore +*)
-                refresh_rates = line.regex("[^ +\\*]+").assume_no_enum()
-                resolution = &refresh_rates.remove(0).assume1()
-                print("{0} ::".format(resolution))
-                for rate refresh_rates {
-                    print(" \"{0}\"".format(rate))
-                }
-                &screen_resolutions.push([resolution refresh_rates])
-                println("")
-            } else {
-                index = line.index_of(" ")
-                switch! index {
-                    int {
-                        if not(screen_name.len().eq(0)) {
-                            &screens.push([screen_name screen_resolutions])
-                        }
-                        screen_resolutions = [ ...]
-                        screen_name = line.substring(0 index)
-                        println("> \"{0}\"".format(screen_name))
-                    }
-                    [] {}
-                }
-            }
-        }
-        if not(screen_name.len().eq(0)) {
-            &screens.push([screen_name screen_resolutions])
-        }
-        for screen screens {
-            println(screen.0)
-            gui_screen = base.gui_add(Row: [])
-            gui_name = gui_screen.gui_add(Text: screen.0)
-            for res screen.1 {
-                gui_resolution = gui_screen.gui_add(Button: res.0)
-                print("  ")
-                println(res.0)
-                for rate res.1 {
-                    print("    ")
-                    println(rate)
-                }
-            }
-        }
-    }
-}

examples/musicdb_remote.mers

@@ -1,205 +0,0 @@
-lib mers_libs/http_requests
-lib mers_libs/gui
-
-// MusicDB is a private project of mine.
-// Basically, a SBC is hooked up to some speakers.
-// It has a database of my songs and can play them.
-// It can be controlled through HTTP requests, such as
-//   p- to stop
-//   p+ to play
-//   qi to get the queue index / playback position
-//   l to list all the songs
-//   ql or qL to list the queue
-//   ...
-// this mers program should work as a very simple gui to remotely control
-// the playback of songs. It should be able to add/remove songs to/from the queue,
-// to start/stop playback, and to display some information about the current song.
-
-// the url used to connect to the SBC and use the HTTP api
-api_url = "http:\//192.168.2.103:26315/api/raw?"
-
-// start the GUI
-base = gui_init()
-set_title("Mers MusicDB Remote")
-
-playback_controls = base.gui_add(Row: [])
-play_button = playback_controls.gui_add(Button: "Play")
-stop_button = playback_controls.gui_add(Button: "Stop")
-
-// these functions abstract away the api interactions
-// because they aren't pretty.
-// feel free to skip past this section and look at the gui code instead
-fn make_api_request(to_api string) {
-    http_get(api_url.add(to_api))
-}
-fn get_queue_index() {
-    r = make_api_request("qi")
-    switch! r {
-        string {
-            r.regex("[0-9]").assume_no_enum().get(0).assume1().parse_int().assume1()
-        }
-        // return the error
-        Err(ErrBuildingRequest(string)/ErrGettingResponseText(string)) r
-    }
-}
-fn get_db_contents() {
-    // list only 7 = 1 (title) + 2 (artist) + 4 (album)
-    r = make_api_request("lo7,")
-    switch! r {
-        string {
-            entries = r.regex("#.*:\n.*\n.*\n.*").assume_no_enum()
-            // initialize the list with a default value
-            // because mers doesnt know the inner type without it.
-            db = [[0 "title" "artist" "album"] ...]
-            &db.remove(0)
-            for entry entries {
-                lines = entry.regex(".*")
-                switch! lines {
-                    [string ...] {
-                        index_line = &lines.get(0).assume1()
-                        index = index_line.substring(1 index_line.len().sub(1)).parse_int().assume1()
-                        title = &lines.get(1).assume1().substring(1)
-                        artist = &lines.get(2).assume1().substring(1)
-                        album = &lines.get(3).assume1().substring(1)
-                        &db.push([index title artist album])
-                    }
-                    Err(string) {
-                        println("invalid response from server; 3u123128731289")
-                        exit(1)
-                    }
-                }
-            }
-            db
-        }
-        Err(ErrBuildingRequest(string)/ErrGettingResponseText(string)) {
-            println("couldn't request db from server:")
-            print("  ")
-            println(r.to_string())
-            exit(1)
-        }
-    }
-}
-fn get_queue() {
-    r = make_api_request("ql")
-    switch! r {
-        string {
-            queue = [0 ...]
-            &queue.remove(0)
-            for index r.regex("[0-9]+[ \n]").assume_no_enum() {
-                &queue.push(index.substring(0 index.len().sub(1)).parse_int().assume1())
-            }
-            queue
-        }
-        Err(ErrBuildingRequest(string)/ErrGettingResponseText(string)) {
-            println("couldn't request queue from server:")
-            print("  ")
-            println(r.to_string())
-            exit(1)
-        }
-    }
-}
-fn play() {
-    r = make_api_request("p+")
-    switch! r {
-        // success! but nothing to return.
-        string []
-        // return the error
-        Err(ErrBuildingRequest(string)/ErrGettingResponseText(string)) r
-    }
-}
-fn stop() {
-    r = make_api_request("p-")
-    switch! r {
-        // success! but nothing to return.
-        string []
-        // return the error
-        Err(ErrBuildingRequest(string)/ErrGettingResponseText(string)) r
-    }
-}
-fn queue_song(song_id int) {
-    make_api_request("q+{0}".format(song_id.to_string()))
-}
-
-// fetch the database contents (a list of songs)
-database = get_db_contents()
-
-// this is where all the songs will be displayed.
-songs_gui = base.gui_add(Row: [])
-queue_list = songs_gui.gui_add(Column: [])
-library = songs_gui.gui_add(Column: [])
-
-limit = 0 // set to 0 to disable library length limit
-for entry database {
-    // <SONG> by <ARTIST> on <ALBUM>
-    song = library.gui_add(Row: [])
-    song.gui_add(Button: entry.1)
-    song.gui_add(Text: "by {0} on {1}".format(entry.2 entry.3))
-    limit = limit.sub(1)
-    if limit.eq(0) [[]] else []
-}
-
-// regularly update the queue
-thread(() {
-    queue_index = get_queue_index().assume_no_enum("if the server isn't reachable, it's ok to crash")
-    queue_list_inner = queue_list.gui_add(Column: [])
-    prev_artist = ""
-    prev_album = ""
-    for song_id get_queue() {
-        this_is_playing = if queue_index.eq(0) { queue_index = -1 true } else if queue_index.gt(0) { queue_index = queue_index.sub(1) false } else { false }
-        song = &database.get(song_id).assume1()
-        row = queue_list_inner.gui_add(Row: [])
-        text = if this_is_playing ">> " else ""
-        text = text.add(song.1)
-        if prev_artist.eq(song.2) {
-            if prev_album.eq(song.3) {
-            } else {
-                text = text.add("(on {0})".format(song.3))
-            }
-        } else {
-            text = text.add("(by {0} on {1})".format(song.2 song.3))
-        }
-        row.gui_add(Text: text)
-        []
-    }
-    sleep(10)
-    queue_list_inner.gui_remove()
-})
-
-loop {
-    for event gui_updates() {
-        switch! event {
-            ButtonPressed([int ...]) {
-                e = event.noenum()
-                println("Pressed button {0}".format(e.to_string()))
-                match e {
-                    &e.eq(&play_button) {
-                        println("pressed play.")
-                        play()
-                    }
-                    &e.eq(&stop_button) {
-                        println("pressed stop.")
-                        stop()
-                    }
-                    {
-                        // the button is in a row that is in the library,
-                        // so pop()ing twice gets the library path.
-                        // THIS WILL BREAK IF THE GUI LIBRARY SWITCHES TO IDs INSTEAD OF PATHS!
-                        last = &e.pop().assume1()
-                        slast = &e.pop().assume1()
-                        matches = &e.eq(&library)
-                        &e.push(slast)
-                        &e.push(last)
-                        if matches e else []
-                    } {
-                        // the second to last part of the path is the row within library, which is also the index in the db
-                        song = &database.get(&e.get(e.len().sub(2)).assume1()).assume1()
-                        println("Added song \"{0}\" to queue.".format(song.1))
-                        queue_song(song.0)
-                    }
-                    true println("A different button was pressed (unreachable)")
-                }
-            }
-        }
-    }
-    []
-}

examples/struct_fields.mers

@@ -3,7 +3,17 @@ type myStruct [
     int,
     string
 ]
-to give names to the fields, we define functions:
+// to give names to the fields, we define functions:
 fn count(s myStruct) s.0
 // to allow users to change the value, add &myStruct to the valid types for s (only through references can values be changed)
 fn note(s myStruct/&myStruct) s.1
+
+my_struct := [12, "test"]
+
+my_struct.count().debug()
+
+my_struct.note().debug()
+
+&my_struct.note() = "changed"
+
+my_struct.note().debug()

mers/Cargo.lock

@@ -647,7 +647,7 @@ dependencies = [
 
 [[package]]
 name = "mers"
-version = "0.2.1"
+version = "0.2.2"
 dependencies = [
  "colorize",
  "edit",

mers/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mers"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

mers/src/lang/builtins.rs

@@ -636,11 +636,7 @@ impl BuiltinFunction {
                                 VSingleType::Tuple(vec![]),
                                 VSingleType::Tuple(vec![v
                                     .get_any(info)
-                                    .expect("cannot use get on this type")
+                                    .expect("cannot use get on this type")]),
-                                    .dereference(info)
-                                    .expect(
-                                        "running get_any() on &[ ...] should give a reference...",
-                                    )]),
                             ],
                         }
                     } else {

mers/src/lang/to_runnable.rs

@@ -557,7 +557,7 @@ fn statement_adv(
         SStatementEnum::For(v, c, b) => {
             let mut linfo = linfo.clone();
             let container = statement(&c, ginfo, &mut linfo)?;
-            let inner = container.out(ginfo).inner_types(ginfo);
+            let inner = container.out(ginfo).inner_types_for_iters(ginfo);
             if inner.types.is_empty() {
                 return Err(ToRunnableError::ForLoopContainerHasNoInnerTypes);
             }
@@ -591,7 +591,6 @@ fn statement_adv(
                     statement(case_action, ginfo, &mut linfo)?,
                 ));
             }
-
             if *force {
                 let types_not_covered = og_type.fits_in(&covered_types, ginfo);
                 if !types_not_covered.is_empty() {

mers/src/lang/val_type.rs

@@ -35,70 +35,6 @@ pub enum VSingleType {
     CustomTypeS(String),
 }
 
-impl VSingleType {
-    /// None => Cannot get, Some(t) => getting can return t or nothing
-    pub fn get(&self, i: usize, gsinfo: &GlobalScriptInfo) -> Option<VType> {
-        match self {
-            Self::Any
-            | Self::Bool
-            | Self::Int
-            | Self::Float
-            | Self::Function(..)
-            | Self::Thread(..)
-            | Self::EnumVariant(..)
-            | Self::EnumVariantS(..) => None,
-            Self::String => Some(VSingleType::String.into()),
-            Self::Tuple(t) => t.get(i).cloned(),
-            Self::List(t) => Some(t.clone()),
-            Self::Reference(r) => Some(r.get(i, gsinfo)?.reference()),
-            Self::CustomType(t) => gsinfo.custom_types[*t].get(i, gsinfo),
-            &Self::CustomTypeS(_) => {
-                unreachable!("CustomTypeS instead of CustomType, compiler bug? [get]")
-            }
-        }
-    }
-    /// None => might not always return t, Some(t) => can only return t
-    pub fn get_always(&self, i: usize, info: &GlobalScriptInfo) -> Option<VType> {
-        match self {
-            Self::Any
-            | Self::Bool
-            | Self::Int
-            | Self::Float
-            | Self::String
-            | Self::List(_)
-            | Self::Function(..)
-            | Self::Thread(..)
-            | Self::EnumVariant(..)
-            | Self::EnumVariantS(..) => None,
-            Self::Tuple(t) => t.get(i).cloned(),
-            Self::Reference(r) => r.get_always_ref(i, info),
-            Self::CustomType(t) => info.custom_types[*t].get_always(i, info),
-            Self::CustomTypeS(_) => {
-                unreachable!("CustomTypeS instead of CustomType, compiler bug? [get_always]")
-            }
-        }
-    }
-    pub fn get_always_ref(&self, i: usize, info: &GlobalScriptInfo) -> Option<VType> {
-        match self {
-            Self::Any
-            | Self::Bool
-            | Self::Int
-            | Self::Float
-            | Self::String
-            | Self::List(_)
-            | Self::Function(..)
-            | Self::Thread(..)
-            | Self::EnumVariant(..)
-            | Self::EnumVariantS(..) => None,
-            Self::Tuple(t) => Some(t.get(i)?.reference()),
-            Self::Reference(r) => r.get_always_ref(i, info),
-            Self::CustomType(t) => info.custom_types[*t].get_always_ref(i, info),
-            Self::CustomTypeS(_) => {
-                unreachable!("CustomTypeS instead of CustomType, compiler bug? [get_always]")
-            }
-        }
-    }
-}
 impl VType {
     pub fn empty() -> Self {
         Self { types: vec![] }
@@ -117,13 +53,6 @@ impl VType {
         }
         Some(out)
     }
-    pub fn get_always_ref(&self, i: usize, info: &GlobalScriptInfo) -> Option<VType> {
-        let mut out = VType { types: vec![] };
-        for t in &self.types {
-            out.add_types(t.get_always_ref(i, info)?, info); // if we can't use *get* on one type, we can't use it at all.
-        }
-        Some(out)
-    }
     /// returns Some(true) or Some(false) if all types are references or not references. If it is mixed or types is empty, returns None.
     pub fn is_reference(&self) -> Option<bool> {
         let mut noref = false;
@@ -156,6 +85,27 @@ impl VType {
 }
 
 impl VSingleType {
+    /// None => Cannot get, Some(t) => getting can return t or nothing
+    pub fn get(&self, i: usize, gsinfo: &GlobalScriptInfo) -> Option<VType> {
+        match self {
+            Self::Any
+            | Self::Bool
+            | Self::Int
+            | Self::Float
+            | Self::Function(..)
+            | Self::Thread(..)
+            | Self::EnumVariant(..)
+            | Self::EnumVariantS(..) => None,
+            Self::String => Some(VSingleType::String.into()),
+            Self::Tuple(t) => t.get(i).cloned(),
+            Self::List(t) => Some(t.clone()),
+            Self::Reference(r) => Some(r.get(i, gsinfo)?.reference()),
+            Self::CustomType(t) => gsinfo.custom_types[*t].get(i, gsinfo),
+            &Self::CustomTypeS(_) => {
+                unreachable!("CustomTypeS instead of CustomType, compiler bug? [get]")
+            }
+        }
+    }
     pub fn get_any(&self, info: &GlobalScriptInfo) -> Option<VType> {
         match self {
             Self::Any
@@ -170,33 +120,40 @@ impl VSingleType {
                 a
             })),
             Self::List(t) => Some(t.clone()),
-            Self::Reference(r) => r.get_any_ref(info),
+            Self::Reference(r) => Some(VType {
+                // this is &a/&b/..., NOT &(a/b/...)!
+                types: r
+                    .get_any(info)?
+                    .types
+                    .iter()
+                    .map(|v| VSingleType::Reference(v.clone().to()))
+                    .collect(),
+            }),
             Self::EnumVariant(_, t) => t.get_any(info),
             Self::EnumVariantS(..) => unreachable!(),
             Self::CustomType(t) => info.custom_types[*t].get_any(info),
             Self::CustomTypeS(_) => unreachable!(),
         }
     }
-    pub fn get_any_ref(&self, info: &GlobalScriptInfo) -> Option<VType> {
+    /// None => might not always return t, Some(t) => can only return t
+    pub fn get_always(&self, i: usize, info: &GlobalScriptInfo) -> Option<VType> {
         match self {
             Self::Any
             | Self::Bool
             | Self::Int
             | Self::Float
+            | Self::String
+            | Self::List(_)
             | Self::Function(..)
-            | Self::Thread(..) => None,
+            | Self::Thread(..)
-            Self::String => Some(VSingleType::String.into()),
+            | Self::EnumVariant(..)
-            Self::Tuple(t) => Some(t.iter().fold(VType::empty(), |mut a, b| {
+            | Self::EnumVariantS(..) => None,
-                a.add_types(b.reference(), info);
+            Self::Tuple(t) => t.get(i).cloned(),
-                a
+            Self::Reference(r) => Some(VSingleType::Reference(r.get_any(info)?).to()),
-            })),
+            Self::CustomType(t) => info.custom_types[*t].get_always(i, info),
-            Self::List(t) => Some(t.reference()),
+            Self::CustomTypeS(_) => {
-            // TODO: idk if this is right...
+                unreachable!("CustomTypeS instead of CustomType, compiler bug? [get_always]")
-            Self::Reference(r) => r.get_any_ref(info),
+            }
-            Self::EnumVariant(_, t) => t.get_any_ref(info),
-            Self::EnumVariantS(..) => unreachable!(),
-            Self::CustomType(t) => info.custom_types[*t].get_any(info),
-            Self::CustomTypeS(_) => unreachable!(),
         }
     }
     pub fn is_reference(&self) -> bool {
@@ -221,13 +178,6 @@ impl VType {
         }
         Some(out)
     }
-    pub fn get_any_ref(&self, info: &GlobalScriptInfo) -> Option<VType> {
-        let mut out = VType { types: vec![] };
-        for t in &self.types {
-            out.add_types(t.get_any_ref(info)?, info); // if we can't use *get* on one type, we can't use it at all.
-        }
-        Some(out)
-    }
 }
 
 impl VType {
@@ -246,10 +196,10 @@ impl VType {
         }
         no
     }
-    pub fn inner_types(&self, info: &GlobalScriptInfo) -> VType {
+    pub fn inner_types_for_iters(&self, info: &GlobalScriptInfo) -> VType {
         let mut out = VType { types: vec![] };
         for t in &self.types {
-            out.add_types(t.inner_types(info), info);
+            out.add_types(t.inner_types_for_iters(info), info);
         }
         out
     }
@@ -307,7 +257,7 @@ impl VSingleType {
     pub fn to(self) -> VType {
         VType { types: vec![self] }
     }
-    pub fn inner_types(&self, info: &GlobalScriptInfo) -> VType {
+    pub fn inner_types_for_iters(&self, info: &GlobalScriptInfo) -> VType {
         match self {
             Self::Tuple(v) => {
                 let mut out = VType::empty();
@@ -324,7 +274,7 @@ impl VSingleType {
                 // function that takes no inputs
                 if let Some(out) = f.iter().find_map(|(args, out)| {
                     if args.is_empty() {
-                        Some(out.clone())
+                        Some(out.clone().matches(info).1)
                     } else {
                         None
                     }
@@ -334,21 +284,7 @@ impl VSingleType {
                     VType::empty()
                 }
             }
-            Self::Reference(r) => r.inner_types(info).reference(),
+            Self::Reference(r) => r.inner_types_for_iters(info).reference(),
-            _ => VType::empty(),
-        }
-    }
-    pub fn inner_types_ref(&self, info: &GlobalScriptInfo) -> VType {
-        match self {
-            Self::Tuple(v) => {
-                let mut out = VType::empty();
-                for it in v {
-                    out.add_types(it.reference(), info);
-                }
-                out
-            }
-            Self::List(v) => v.reference(),
-            Self::Reference(r) => r.inner_types(info).reference(),
             _ => VType::empty(),
         }
     }

mers/src/parsing/parse.rs

@@ -83,8 +83,6 @@ impl FormatGs for ScriptError {
     }
 }
 
-pub const PARSE_VERSION: u64 = 0;
-
 pub struct Error {
     pub err: ScriptError,
     pub ginfo: GSInfo,
@@ -313,7 +311,6 @@ pub enum ParseErrors {
     FoundEofInType,
     FoundEofInsteadOfType,
     RefTypeWithBracketsNotClosedProperly,
-    InvalidType(String),
     CannotUseFixedIndexingWithThisType(VType),
     CannotWrapWithThisStatement(SStatementEnum),
     ErrorParsingFunctionArgs(Box<ParseError>),
@@ -354,7 +351,6 @@ impl FormatGs for ParseErrors {
             Self::RefTypeWithBracketsNotClosedProperly => {
                 write!(f, "ref type with brackets &(...) wasn't closed properly.")
             }
-            Self::InvalidType(name) => write!(f, "\"{name}\" is not a type."),
             Self::CannotUseFixedIndexingWithThisType(t) => {
                 write!(f, "cannot use fixed-indexing with type ")?;
                 t.fmtgs(f, info, form, file)?;
@@ -1166,12 +1162,12 @@ pub mod implementation {
         }
         Ok((VType { types }, closed_fn_args))
     }
-    fn parse_single_type(file: &mut File) -> Result<VSingleType, ParseError> {
+    // fn parse_single_type(file: &mut File) -> Result<VSingleType, ParseError> {
-        match parse_single_type_adv(file, false) {
+    //     match parse_single_type_adv(file, false) {
-            Ok((v, _)) => Ok(v),
+    //         Ok((v, _)) => Ok(v),
-            Err(e) => Err(e),
+    //         Err(e) => Err(e),
-        }
+    //     }
-    }
+    // }
     fn parse_single_type_adv(
         file: &mut File,
         in_fn_args: bool,
@@ -1277,8 +1273,11 @@ pub mod implementation {
                                                     }
                                                 }
                                                 file.skip_whitespaces();
-                                                let out = parse_type(file)?;
+                                                let (out, close) = parse_type_adv(file, true)?;
                                                 fn_types.push((args, out));
+                                                if close {
+                                                    break;
+                                                };
                                             }
                                             Some(')') => break,
                                             Some(other) => {