Remove table generation

This completely removes the `codegen` project, which relied on outdated
libraries to parse DSLs to build the utf8 and vte state tables, to make
the library easier to maintain.

The utf8 table could be completely removed in favor of a `match`
statement, which also lead to a performance improvement with the utf8
parser.

The vte table did not benefit from `match` statements at all and instead
had significantly worse performance with it. To replace the old
codegeneration for vte, the `generate_state_changes` crate has been
created instead, which uses the language's proc_macro feature to create
a `const fn` which will generate the table at compile time.

1 files changed, 0 insertions, 11 deletions

diff --git a/codegen/README.md b/codegen/README.md
deleted file mode 100644
index d13aa5d..0000000
--- a/codegen/README.md
+++ /dev/null
@@ -1,11 +0,0 @@
-codegen
-=======
-
-Depends on libsyntex and generates table.rs from table.rs.in. This code is
-separate from the main vtparse crate since compiling libsyntex takes ~1
-eternity.
-
-## Usage
-
-`cargo run` in the codegen folder will process `table.rs.in` and output
-`table.rs`. The latter file should be committed back into the repo.