crates/json-pawarser/src/syntax_error.rs

@@ -1,6 +1,6 @@
 use crate::syntax_kind::SyntaxKind;
 
-#[derive(Clone, PartialEq, Eq)]
+#[derive(Clone)]
 pub enum SyntaxError {
     DisallowedKeyType(SyntaxKind),
     MemberMissingValue,

crates/pawarser/src/parser.rs

@@ -1,9 +1,6 @@
-use std::{cell::Cell, marker::PhantomData, mem};
+use std::cell::Cell;
 
 use enumset::{EnumSet, EnumSetType};
-use rowan::{GreenNode, GreenNodeBuilder};
-
-use crate::parser::event::NodeKind;
 
 use self::{event::Event, input::Input, marker::Marker};
 pub use error::SyntaxError;
@@ -16,7 +13,7 @@ pub mod marker;
 /// this is used to define some required SyntaxKinds like an EOF token or an error token
 pub trait SyntaxElement
 where
-    Self: EnumSetType + Into<rowan::SyntaxKind> + Clone + PartialEq + Eq,
+    Self: EnumSetType + Into<rowan::SyntaxKind> + Clone,
 {
     /// EOF value. This will be used by the rest of the parser library to represent an EOF.
     const EOF: Self;
@@ -96,90 +93,6 @@ impl<'src, 'toks, SyntaxKind: SyntaxElement, SyntaxErr: SyntaxError>
         assert!(steps <= self.step_limit, "the parser seems stuck.");
         self.steps.set(steps + 1);
     }
-
-    pub fn finish(
-        Self {
-            input,
-            pos,
-            mut events,
-            step_limit,
-            steps,
-        }: Self,
-    ) -> ParserOutput<SyntaxKind, SyntaxErr> {
-        let (mut raw_toks, meaningless_tokens) = input.dissolve();
-        let mut builder = GreenNodeBuilder::new();
-        // TODO: document what the hell a forward parent is
-        let mut fw_parents = Vec::new();
-        let mut errors: Vec<SyntaxErr> = Vec::new();
-        raw_toks.reverse();
-
-        for i in 0..events.len() {
-            match mem::replace(&mut events[i], Event::tombstone()) {
-                Event::Start {
-                    kind,
-                    forward_parent,
-                } => {
-                    if kind == NodeKind::Tombstone && forward_parent.is_none() {
-                        continue;
-                    }
-
-                    // resolving forward parents
-                    // temporarily jump around with the parser index and replace them with tombstones
-                    fw_parents.push(kind);
-                    let mut idx = i;
-                    let mut fp = forward_parent;
-                    while let Some(fwd) = fp {
-                        idx += fwd as usize;
-                        fp = match mem::replace(&mut events[idx], Event::tombstone()) {
-                            Event::Start {
-                                kind,
-                                forward_parent,
-                            } => {
-                                fw_parents.push(kind);
-                                forward_parent
-                            }
-                            _ => unreachable!(),
-                        }
-                    }
-
-                    // clear semantically meaningless tokens before the new tree node for aesthetic reasons
-                    while raw_toks
-                        .last()
-                        .is_some_and(|v| meaningless_tokens.contains(v.0))
-                    {
-                        // update first next Eat event
-                        match events.iter_mut().find(|ev| matches!(ev, Event::Eat { .. })) {
-                            Some(Event::Eat { count }) => *count -= 1,
-                            _ => unreachable!(),
-                        }
-
-                        // put whitespace into lst
-                        let (tok, text) = raw_toks.pop().unwrap();
-                        builder.token(tok.into(), text);
-                    }
-
-                    // insert forward parents into the tree in correct order
-                    for kind in fw_parents.drain(..).rev() {
-                        match kind {
-                            NodeKind::Syntax(kind) => builder.start_node(kind.into()),
-                            NodeKind::Error(err) => {
-                                errors.push(err);
-                                builder.start_node(SyntaxKind::ERROR.into())
-                            }
-                            _ => {}
-                        }
-                    }
-                }
-                Event::Finish => builder.finish_node(),
-                Event::Eat { count } => (0..count).for_each(|_| {
-                    let (tok, text) = raw_toks.pop().unwrap();
-                    builder.token(tok.into(), text);
-                }),
-            }
-        }
-
-        todo!()
-    }
 }
 
 pub struct ParserBuilder<

crates/pawarser/src/parser/error.rs

@@ -2,6 +2,6 @@
 // TODO: constrain that conversion to `NodeKind::Error` is enforced to be possible
 pub trait SyntaxError
 where
-    Self: Clone + PartialEq + Eq,
+    Self: Clone,
 {
 }

crates/pawarser/src/parser/event.rs

@@ -22,7 +22,7 @@ impl<SyntaxKind: SyntaxElement, SyntaxErr: SyntaxError> Event<SyntaxKind, Syntax
     }
 }
 
-#[derive(Clone, PartialEq, Eq)]
+#[derive(Clone)]
 pub enum NodeKind<SyntaxKind: SyntaxElement, SyntaxErr: SyntaxError> {
     Tombstone,
     Syntax(SyntaxKind),

crates/pawarser/src/parser/input.rs

@@ -55,13 +55,4 @@ impl<'src, SyntaxKind: SyntaxElement> Input<'src, SyntaxKind> {
     pub fn meaningless_tail_len(&self) -> usize {
         self.raw.len() - (self.meaningful_toks.last().unwrap() + 1)
     }
-
-    pub fn dissolve(self) -> (Vec<(SyntaxKind, &'src str)>, EnumSet<SyntaxKind>) {
-        let Self {
-            raw,
-            semantically_meaningless,
-            ..
-        } = self;
-        (raw, semantically_meaningless)
-    }
 }

crates/pawarser/src/parser/marker.rs

@@ -69,17 +69,6 @@ pub struct CompletedMarker<SyntaxKind: SyntaxElement, SyntaxErr: SyntaxError> {
 
 impl<SyntaxKind: SyntaxElement, SyntaxErr: SyntaxError> CompletedMarker<SyntaxKind, SyntaxErr> {
     pub fn precede(self, p: &mut Parser<SyntaxKind, SyntaxErr>, name: &str) -> Marker {
-        let new_pos = p.start(name);
+        todo!()
-
-        match &mut p.events[self.pos] {
-            Event::Start { forward_parent, .. } => {
-                // point forward parent of the node this marker completed to the new node
-                // will later be used to make the new node a parent of the current node.
-                *forward_parent = Some(new_pos.pos - self.pos)
-            }
-            _ => unreachable!(),
-        }
-
-        new_pos
     }
 }