3 files changed, 20 insertions, 14 deletions

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()
 }