4 files changed, 32 insertions, 14 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 0885ac5f4..4f8be3212 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1364,6 +1364,7 @@ dependencies = [
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ron 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "teraron 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1615,6 +1616,16 @@ dependencies = [
 ]
 
 [[package]]
+name = "ron"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "rowan"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2321,6 +2332,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum relative-path 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0e7790c7f1cc73d831d28dc5a7deb316a006e7848e6a7f467cdb10a0a9e0fb1c"
 "checksum remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4a83fa3702a688b9359eccba92d153ac33fd2e8462f9e0e3fdf155239ea7792e"
 "checksum ron 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "17f52a24414403f81528b67488cf8edc4eda977d3af1646bb6b106a600ead78f"
+"checksum ron 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2ece421e0c4129b90e4a35b6f625e472e96c552136f5093a2f4fa2bbb75a62d5"
 "checksum rowan 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dc2b79612dedc9004083a61448eb669d336d56690aab29fbd7249e8c8ab41d8c"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "checksum rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7540fc8b0c49f096ee9c961cda096467dce8084bec6bdca2fc83895fd9b28cb8"
diff --git a/crates/ra_tools/Cargo.toml b/crates/ra_tools/Cargo.toml
index a70079b95..02bab8f52 100644
--- a/crates/ra_tools/Cargo.toml
+++ b/crates/ra_tools/Cargo.toml
@@ -11,3 +11,4 @@ walkdir = "2.1.3"
 itertools = "0.8.0"
 clap = "2.32.0"
 quote = "1.0.2"
+ron = "0.5.1"
diff --git a/crates/ra_tools/src/codegen.rs b/crates/ra_tools/src/codegen.rs
index edb01aceb..405fb623c 100644
--- a/crates/ra_tools/src/codegen.rs
+++ b/crates/ra_tools/src/codegen.rs
@@ -1,7 +1,21 @@
-use std::path::Path;
+use std::{fs, path::Path};
 
-use crate::{Mode, Result};
+use ron;
 
-pub fn generate_ast(grammar_src: &Path, dst: &Path, mode: Mode) -> Result<()> {
+use crate::{project_root, Mode, Result, AST, GRAMMAR};
+
+pub fn generate(mode: Mode) -> Result<()> {
+    let grammar = project_root().join(GRAMMAR);
+    // let syntax_kinds = project_root().join(SYNTAX_KINDS);
+    let ast = project_root().join(AST);
+    generate_ast(&grammar, &ast, mode)
+}
+
+fn generate_ast(grammar_src: &Path, dst: &Path, mode: Mode) -> Result<()> {
+    let src: ron::Value = {
+        let text = fs::read_to_string(grammar_src)?;
+        ron::de::from_str(&text)?
+    };
+    eprintln!("{:?}", src);
     Ok(())
 }
diff --git a/crates/ra_tools/src/lib.rs b/crates/ra_tools/src/lib.rs
index 2cbb07ebf..de8c472d1 100644
--- a/crates/ra_tools/src/lib.rs
+++ b/crates/ra_tools/src/lib.rs
@@ -13,7 +13,7 @@ use itertools::Itertools;
 
 pub use teraron::{Mode, Overwrite, Verify};
 
-pub use self::codegen::generate_ast;
+pub use self::codegen::generate;
 
 pub type Result<T> = std::result::Result<T, Box<dyn Error>>;
 
@@ -23,7 +23,7 @@ const OK_INLINE_TESTS_DIR: &str = "crates/ra_syntax/test_data/parser/inline/ok";
 const ERR_INLINE_TESTS_DIR: &str = "crates/ra_syntax/test_data/parser/inline/err";
 
 pub const SYNTAX_KINDS: &str = "crates/ra_parser/src/syntax_kind/generated.rs.tera";
-pub const AST: &str = "crates/ra_syntax/src/ast/generated.rs.tera";
+pub const AST: &str = "crates/ra_syntax/src/ast/generated.rs";
 const TOOLCHAIN: &str = "stable";
 
 #[derive(Debug)]
@@ -70,15 +70,6 @@ pub fn collect_tests(s: &str) -> Vec<(usize, Test)> {
     res
 }
 
-pub fn generate(mode: Mode) -> Result<()> {
-    let grammar = project_root().join(GRAMMAR);
-    let syntax_kinds = project_root().join(SYNTAX_KINDS);
-    let ast = project_root().join(AST);
-    teraron::generate(&syntax_kinds, &grammar, mode)?;
-    teraron::generate(&ast, &grammar, mode)?;
-    Ok(())
-}
-
 pub fn project_root() -> PathBuf {
     Path::new(&env!("CARGO_MANIFEST_DIR")).ancestors().nth(2).unwrap().to_path_buf()
 }