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Reference grammar.

Uses antlr4 and a custom Rust tool to compare ASTs/token streams generated. You can use the check-lexer make target to run all of the available tests.

To use manually:

antlr4 RustLexer.g4
javac *.java
rustc -O verify.rs
for file in ../*/**.rs; do
    echo $file;
    grun RustLexer tokens -tokens < "$file" | ./verify "$file" RustLexer.tokens || break
done

Note That the ../*/**.rs glob will match every *.rs file in the above directory and all of its recursive children. This is a zsh extension.