summaryrefslogtreecommitdiff
path: root/vendor/logos-codegen/src/generator/rope.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/logos-codegen/src/generator/rope.rs')
-rw-r--r--vendor/logos-codegen/src/generator/rope.rs39
1 files changed, 0 insertions, 39 deletions
diff --git a/vendor/logos-codegen/src/generator/rope.rs b/vendor/logos-codegen/src/generator/rope.rs
deleted file mode 100644
index ae3b07ad..00000000
--- a/vendor/logos-codegen/src/generator/rope.rs
+++ /dev/null
@@ -1,39 +0,0 @@
-use proc_macro2::TokenStream;
-use quote::quote;
-
-use crate::generator::{Context, Generator};
-use crate::graph::Rope;
-
-impl Generator<'_> {
- pub fn generate_rope(&mut self, rope: &Rope, mut ctx: Context) -> TokenStream {
- let miss = ctx.miss(rope.miss.first(), self);
- let read = ctx.read(rope.pattern.len());
- let then = self.goto(rope.then, ctx.advance(rope.pattern.len()));
-
- let pat = match rope.pattern.to_bytes() {
- Some(bytes) => byte_slice_literal(&bytes),
- None => {
- let ranges = rope.pattern.iter();
-
- quote!([#(#ranges),*])
- }
- };
-
- quote! {
- match #read {
- Some(#pat) => #then,
- _ => #miss,
- }
- }
- }
-}
-
-fn byte_slice_literal(bytes: &[u8]) -> TokenStream {
- if bytes.iter().any(|&b| !(0x20..0x7F).contains(&b)) {
- return quote!(&[#(#bytes),*]);
- }
-
- let slice = std::str::from_utf8(bytes).unwrap();
-
- syn::parse_str(&format!("b{:?}", slice)).unwrap()
-}