diff options
author | Nadrieril Feneanar | 2019-12-22 00:48:35 +0000 |
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committer | GitHub | 2019-12-22 00:48:35 +0000 |
commit | 06e75c919d999c310f8ca1c151c6a5ad6918ca08 (patch) | |
tree | 849a54821e08c78cbff4965e1a268e050466fa6c /dhall/build.rs | |
parent | ce74f996808ae84b4967040f3441e1bbba31f506 (diff) | |
parent | 139daf4da23c87366d920cea2775afe11cce7be7 (diff) |
Merge pull request #122 from Nadrieril/publish
Publish to crates.io
Diffstat (limited to '')
-rw-r--r-- | dhall/build.rs | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/dhall/build.rs b/dhall/build.rs index 50f423e..3021f03 100644 --- a/dhall/build.rs +++ b/dhall/build.rs @@ -408,9 +408,10 @@ fn generate_tests() -> std::io::Result<()> { } fn convert_abnf_to_pest() -> std::io::Result<()> { + let out_dir = env::var("OUT_DIR").unwrap(); let abnf_path = "src/dhall.abnf"; let visibility_path = "src/dhall.pest.visibility"; - let pest_path = "src/dhall.pest"; + let grammar_path = Path::new(&out_dir).join("dhall.pest"); println!("cargo:rerun-if-changed={}", abnf_path); println!("cargo:rerun-if-changed={}", visibility_path); @@ -427,7 +428,7 @@ fn convert_abnf_to_pest() -> std::io::Result<()> { } } - let mut file = File::create(pest_path)?; + let mut file = File::create(grammar_path)?; writeln!(&mut file, "// AUTO-GENERATED FILE. See build.rs.")?; // TODO: this is a cheat; properly support RFC3986 URLs instead @@ -493,8 +494,31 @@ fn convert_abnf_to_pest() -> std::io::Result<()> { Ok(()) } +// Generate pest parser manually becaue otherwise we'd need to modify something outside of +// OUT_DIR and that's forbidden by docs.rs. +fn generate_pest_parser() -> std::io::Result<()> { + let out_dir = env::var("OUT_DIR").unwrap(); + let grammar_path = Path::new(&out_dir).join("dhall.pest"); + let grammar_path = grammar_path.to_str(); + let output_path = Path::new(&out_dir).join("dhall_parser.rs"); + + let pest = quote::quote!( + #[grammar = #grammar_path] + struct DhallParser; + ); + let derived = pest_generator::derive_parser(pest, false); + let file_contents = quote::quote!( + struct DhallParser; + #derived + ); + + let mut file = File::create(output_path)?; + writeln!(file, "{}", file_contents) +} + fn main() -> std::io::Result<()> { convert_abnf_to_pest()?; + generate_pest_parser()?; generate_tests()?; Ok(()) } |