rustpython-bytecode -> rustpython-compiler-core

core/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "rustpython-compiler-core"
+description = "RustPython specific bytecode."
+version = "0.1.2"
+authors = ["RustPython Team"]
+edition = "2021"
+repository = "https://github.com/RustPython/RustPython"
+license = "MIT"
+
+[dependencies]
+bincode = "1.3.3"
+bitflags = "1.3.2"
+bstr = "0.2.17"
+itertools = "0.10.3"
+lz4_flex = "0.9.2"
+num-bigint = { version = "0.4.3", features = ["serde"] }
+num-complex = { version = "0.4.0", features = ["serde"] }
+serde = { version = "1.0.136", features = ["derive"] }
+static_assertions = "1.1.0"

core/src/lib.rs

@@ -0,0 +1,8 @@
+#![doc(html_logo_url = "https://raw.githubusercontent.com/RustPython/RustPython/main/logo.png")]
+#![doc(html_root_url = "https://docs.rs/rustpython-compiler-core/")]
+
+pub mod bytecode;
+mod mode;
+
+pub use bytecode::*;
+pub use mode::Mode;

core/src/mode.rs

@@ -0,0 +1,32 @@
+#[derive(Clone, Copy)]
+pub enum Mode {
+    Exec,
+    Eval,
+    Single,
+    BlockExpr,
+}
+
+impl std::str::FromStr for Mode {
+    type Err = ModeParseError;
+
+    // To support `builtins.compile()` `mode` argument
+    fn from_str(s: &str) -> Result<Self, ModeParseError> {
+        match s {
+            "exec" => Ok(Mode::Exec),
+            "eval" => Ok(Mode::Eval),
+            "single" => Ok(Mode::Single),
+            _ => Err(ModeParseError { _priv: () }),
+        }
+    }
+}
+
+#[derive(Debug)]
+pub struct ModeParseError {
+    _priv: (),
+}
+
+impl std::fmt::Display for ModeParseError {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        write!(f, r#"mode should be "exec", "eval", or "single""#)
+    }
+}