numerous refactoring

- Split parser core and compiler core. Fix #14
- AST int type to `u32`
- Updated asdl_rs.py and update_asdl.sh fix #6
- Use `ruff_python_ast::SourceLocation` for Python source location. Deleted our own Location.
- Renamed ast::Located to ast::Attributed to distinguish terms for TextSize and SourceLocation
- `ast::<Node>`s for TextSize located ast. `ast::located::<Node>` for Python source located ast.
- And also strictly renaming `located` to refer only python location related interfaces.
- `SourceLocator` to convert locations.
- New `source-code` features of to disable python locations when unnecessary.
- Also including fully merging https://github.com/astral-sh/RustPython/pull/4 closes #9

ast/src/lib.rs

@@ -7,53 +7,21 @@ mod generic {
     include!("gen/generic.rs");
 }
 mod impls;
-#[cfg(feature = "location")]
-pub mod located {
-    include!("gen/located.rs");
-}
-#[cfg(feature = "location")]
-mod locator;
-#[cfg(feature = "location")]
-pub use crate::locator::locate;
-#[cfg(feature = "location")]
-pub use rustpython_compiler_core::SourceLocator;
-
+#[cfg(feature = "source-code")]
+mod source_locator;
 #[cfg(feature = "unparse")]
 mod unparse;
 
 pub use attributed::Attributed;
-pub use constant::{Constant, ConversionFlag};
+pub use constant::Constant;
 pub use generic::*;
+pub use rustpython_parser_core::{text_size, ConversionFlag};
 
 pub type Suite<U = ()> = Vec<Stmt<U>>;
 
-pub mod location {
-    pub use rustpython_compiler_core::source_code::{OneIndexed, SourceLocation};
-
-    #[derive(Debug)]
-    pub struct SourceRange {
-        pub start: SourceLocation,
-        pub end: Option<SourceLocation>,
-    }
-
-    impl SourceRange {
-        pub fn new(start: SourceLocation, end: SourceLocation) -> Self {
-            Self {
-                start,
-                end: Some(end),
-            }
-        }
-        pub fn unwrap_end(&self) -> SourceLocation {
-            self.end.unwrap()
-        }
-    }
-
-    impl From<std::ops::Range<SourceLocation>> for SourceRange {
-        fn from(value: std::ops::Range<SourceLocation>) -> Self {
-            Self {
-                start: value.start,
-                end: Some(value.end),
-            }
-        }
-    }
+#[cfg(feature = "source-code")]
+pub mod located {
+    include!("gen/located.rs");
 }
+
+pub use rustpython_parser_core::source_code;