From 34ddaacb58d81d235f7f9ed2094ef600cdebc7e3 Mon Sep 17 00:00:00 2001
From: Schrottkatze <git@schrottkatze.de>
Date: Sun, 13 Oct 2024 16:47:53 +0200
Subject: [PATCH] pawarser(chore): split up files

---
 crates/pawarser/src/lib.rs          | 166 +---------------------------
 crates/pawarser/src/parser.rs       |  78 +++++++++++++
 crates/pawarser/src/parser/error.rs |   3 +
 crates/pawarser/src/parser/event.rs |  45 ++++++++
 crates/pawarser/src/parser/input.rs |  34 ++++++
 5 files changed, 161 insertions(+), 165 deletions(-)
 create mode 100644 crates/pawarser/src/parser.rs
 create mode 100644 crates/pawarser/src/parser/error.rs
 create mode 100644 crates/pawarser/src/parser/event.rs
 create mode 100644 crates/pawarser/src/parser/input.rs

diff --git a/crates/pawarser/src/lib.rs b/crates/pawarser/src/lib.rs
index 16955d1..92dcd54 100644
--- a/crates/pawarser/src/lib.rs
+++ b/crates/pawarser/src/lib.rs
@@ -1,166 +1,2 @@
 #![feature(iter_collect_into)]
-pub mod parser {
-    use std::cell::Cell;
-
-    use enumset::{EnumSet, EnumSetType};
-
-    use self::{error::SyntaxError, event::Event, input::Input};
-
-    pub mod input {
-        use enumset::{EnumSet, EnumSetType};
-
-        pub struct Input<'src, 'toks, SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>> {
-            raw: &'toks Vec<(SyntaxKind, &'src str)>,
-            // enumset of meaningless tokens
-            semantically_meaningless: EnumSet<SyntaxKind>,
-            // indices of non-meaningless tokens
-            meaningful_toks: Vec<usize>,
-        }
-
-        impl<'src, 'toks, SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>>
-            Input<'src, 'toks, SyntaxKind>
-        {
-            pub fn new(
-                raw_toks: &'toks Vec<(SyntaxKind, &'src str)>,
-                meaningless: Option<EnumSet<SyntaxKind>>,
-            ) -> Self {
-                let mut meaningful_toks = Vec::new();
-
-                if let Some(meaningless) = meaningless {
-                    let meaningful_toks = raw_toks
-                        .iter()
-                        .enumerate()
-                        .filter_map(|(i, tok)| (!meaningless.contains(tok.0)).then_some(i))
-                        .collect_into(&mut meaningful_toks);
-                }
-
-                Self {
-                    raw: raw_toks,
-                    semantically_meaningless: meaningless.unwrap_or_default(),
-                    meaningful_toks,
-                }
-            }
-        }
-    }
-    mod event {
-        use enumset::EnumSetType;
-
-        use super::error::SyntaxError;
-
-        pub enum Event<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError> {
-            Start {
-                kind: NodeKind<SyntaxKind, SyntaxErr>,
-                forward_parent: Option<usize>,
-            },
-            Finish,
-            Eat {
-                count: usize,
-            },
-        }
-
-        impl<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError>
-            Event<SyntaxKind, SyntaxErr>
-        {
-            pub fn tombstone() -> Self {
-                Self::Start {
-                    kind: NodeKind::Tombstone,
-                    forward_parent: None,
-                }
-            }
-        }
-
-        pub enum NodeKind<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError> {
-            Tombstone,
-            Syntax(SyntaxKind),
-            Error(SyntaxErr),
-        }
-
-        impl<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError>
-            NodeKind<SyntaxKind, SyntaxErr>
-        {
-            pub fn is_tombstone(&self) -> bool {
-                matches!(self, Self::Tombstone)
-            }
-            pub fn is_syntax(&self) -> bool {
-                matches!(self, Self::Syntax(_))
-            }
-            pub fn is_error(&self) -> bool {
-                matches!(self, Self::Error(_))
-            }
-        }
-    }
-    mod error {
-        /// A marker trait... for now!
-        // TODO: constrain that conversion to `NodeKind::Error` is enforced to be possible
-        pub trait SyntaxError {}
-    }
-
-    pub struct Parser<
-        'src,
-        'toks,
-        SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>,
-        SyntaxErr: SyntaxError,
-    > {
-        input: Input<'src, 'toks, SyntaxKind>,
-        pos: usize,
-        events: Vec<Event<SyntaxKind, SyntaxErr>>,
-        step_limit: u32,
-        steps: Cell<u32>,
-    }
-
-    pub struct ParserBuilder<
-        'src,
-        'toks,
-        SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>,
-        // SyntaxErr: SyntaxError,
-    > {
-        raw_toks: &'toks Vec<(SyntaxKind, &'src str)>,
-        meaningless_token_kinds: EnumSet<SyntaxKind>,
-        step_limit: u32,
-    }
-
-    impl<'src, 'toks, SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>>
-        ParserBuilder<'src, 'toks, SyntaxKind>
-    {
-        pub fn new(raw_toks: &'toks Vec<(SyntaxKind, &'src str)>) -> Self {
-            Self {
-                raw_toks,
-                meaningless_token_kinds: EnumSet::new(),
-                step_limit: 4096,
-            }
-        }
-
-        /// Sets the parser step limit.
-        /// Defaults to 4096
-        pub fn step_limit(mut self, new: u32) -> Self {
-            self.step_limit = new;
-            self
-        }
-
-        pub fn add_meaningless(mut self, kind: SyntaxKind) -> Self {
-            self.meaningless_token_kinds.insert(kind);
-            self
-        }
-
-        pub fn add_meaningless_many(mut self, kind: Vec<SyntaxKind>) -> Self {
-            self.meaningless_token_kinds
-                .insert_all(kind.into_iter().collect());
-            self
-        }
-
-        pub fn build<SyntaxErr: SyntaxError>(self) -> Parser<'src, 'toks, SyntaxKind, SyntaxErr> {
-            let Self {
-                raw_toks,
-                meaningless_token_kinds,
-                step_limit,
-            } = self;
-            Parser {
-                input: Input::new(raw_toks, Some(meaningless_token_kinds)),
-                pos: 0,
-                events: Vec::new(),
-                step_limit,
-                steps: Cell::new(0),
-            }
-        }
-    }
-}
+pub mod parser;
diff --git a/crates/pawarser/src/parser.rs b/crates/pawarser/src/parser.rs
new file mode 100644
index 0000000..196c776
--- /dev/null
+++ b/crates/pawarser/src/parser.rs
@@ -0,0 +1,78 @@
+use std::cell::Cell;
+
+use enumset::{EnumSet, EnumSetType};
+
+use self::{error::SyntaxError, event::Event, input::Input};
+
+mod error;
+mod event;
+pub mod input;
+
+pub struct Parser<
+    'src,
+    'toks,
+    SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>,
+    SyntaxErr: SyntaxError,
+> {
+    input: Input<'src, 'toks, SyntaxKind>,
+    pos: usize,
+    events: Vec<Event<SyntaxKind, SyntaxErr>>,
+    step_limit: u32,
+    steps: Cell<u32>,
+}
+
+pub struct ParserBuilder<
+    'src,
+    'toks,
+    SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>,
+    // SyntaxErr: SyntaxError,
+> {
+    raw_toks: &'toks Vec<(SyntaxKind, &'src str)>,
+    meaningless_token_kinds: EnumSet<SyntaxKind>,
+    step_limit: u32,
+}
+
+impl<'src, 'toks, SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>>
+    ParserBuilder<'src, 'toks, SyntaxKind>
+{
+    pub fn new(raw_toks: &'toks Vec<(SyntaxKind, &'src str)>) -> Self {
+        Self {
+            raw_toks,
+            meaningless_token_kinds: EnumSet::new(),
+            step_limit: 4096,
+        }
+    }
+
+    /// Sets the parser step limit.
+    /// Defaults to 4096
+    pub fn step_limit(mut self, new: u32) -> Self {
+        self.step_limit = new;
+        self
+    }
+
+    pub fn add_meaningless(mut self, kind: SyntaxKind) -> Self {
+        self.meaningless_token_kinds.insert(kind);
+        self
+    }
+
+    pub fn add_meaningless_many(mut self, kind: Vec<SyntaxKind>) -> Self {
+        self.meaningless_token_kinds
+            .insert_all(kind.into_iter().collect());
+        self
+    }
+
+    pub fn build<SyntaxErr: SyntaxError>(self) -> Parser<'src, 'toks, SyntaxKind, SyntaxErr> {
+        let Self {
+            raw_toks,
+            meaningless_token_kinds,
+            step_limit,
+        } = self;
+        Parser {
+            input: Input::new(raw_toks, Some(meaningless_token_kinds)),
+            pos: 0,
+            events: Vec::new(),
+            step_limit,
+            steps: Cell::new(0),
+        }
+    }
+}
diff --git a/crates/pawarser/src/parser/error.rs b/crates/pawarser/src/parser/error.rs
new file mode 100644
index 0000000..e27c536
--- /dev/null
+++ b/crates/pawarser/src/parser/error.rs
@@ -0,0 +1,3 @@
+/// A marker trait... for now!
+// TODO: constrain that conversion to `NodeKind::Error` is enforced to be possible
+pub trait SyntaxError {}
diff --git a/crates/pawarser/src/parser/event.rs b/crates/pawarser/src/parser/event.rs
new file mode 100644
index 0000000..cb1bed7
--- /dev/null
+++ b/crates/pawarser/src/parser/event.rs
@@ -0,0 +1,45 @@
+use enumset::EnumSetType;
+
+use super::error::SyntaxError;
+
+pub enum Event<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError> {
+    Start {
+        kind: NodeKind<SyntaxKind, SyntaxErr>,
+        forward_parent: Option<usize>,
+    },
+    Finish,
+    Eat {
+        count: usize,
+    },
+}
+
+impl<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError>
+    Event<SyntaxKind, SyntaxErr>
+{
+    pub fn tombstone() -> Self {
+        Self::Start {
+            kind: NodeKind::Tombstone,
+            forward_parent: None,
+        }
+    }
+}
+
+pub enum NodeKind<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError> {
+    Tombstone,
+    Syntax(SyntaxKind),
+    Error(SyntaxErr),
+}
+
+impl<SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>, SyntaxErr: SyntaxError>
+    NodeKind<SyntaxKind, SyntaxErr>
+{
+    pub fn is_tombstone(&self) -> bool {
+        matches!(self, Self::Tombstone)
+    }
+    pub fn is_syntax(&self) -> bool {
+        matches!(self, Self::Syntax(_))
+    }
+    pub fn is_error(&self) -> bool {
+        matches!(self, Self::Error(_))
+    }
+}
diff --git a/crates/pawarser/src/parser/input.rs b/crates/pawarser/src/parser/input.rs
new file mode 100644
index 0000000..b148497
--- /dev/null
+++ b/crates/pawarser/src/parser/input.rs
@@ -0,0 +1,34 @@
+use enumset::{EnumSet, EnumSetType};
+
+pub struct Input<'src, 'toks, SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>> {
+    raw: &'toks Vec<(SyntaxKind, &'src str)>,
+    // enumset of meaningless tokens
+    semantically_meaningless: EnumSet<SyntaxKind>,
+    // indices of non-meaningless tokens
+    meaningful_toks: Vec<usize>,
+}
+
+impl<'src, 'toks, SyntaxKind: EnumSetType + Into<rowan::SyntaxKind>>
+    Input<'src, 'toks, SyntaxKind>
+{
+    pub fn new(
+        raw_toks: &'toks Vec<(SyntaxKind, &'src str)>,
+        meaningless: Option<EnumSet<SyntaxKind>>,
+    ) -> Self {
+        let mut meaningful_toks = Vec::new();
+
+        if let Some(meaningless) = meaningless {
+            let meaningful_toks = raw_toks
+                .iter()
+                .enumerate()
+                .filter_map(|(i, tok)| (!meaningless.contains(tok.0)).then_some(i))
+                .collect_into(&mut meaningful_toks);
+        }
+
+        Self {
+            raw: raw_toks,
+            semantically_meaningless: meaningless.unwrap_or_default(),
+            meaningful_toks,
+        }
+    }
+}