Migrated the project to the Rust 2018 edition

Cargo.toml

@@ -2,6 +2,7 @@
 name = "rustpython"
 version = "0.0.1"
 authors = ["Windel Bouwman", "Shing Lyu <shing.lyu@gmail.com>"]
+edition = "2018"
 
 [workspace]
 members = [".", "vm", "wasm/lib", "parser"]

parser/Cargo.toml

@@ -3,6 +3,7 @@ name = "rustpython_parser"
 version = "0.0.1"
 authors = [ "Shing Lyu", "Windel Bouwman" ]
 build = "build.rs"
+edition = "2018"
 
 [build-dependencies]
 lalrpop="0.15.1"

parser/build.rs

@@ -1,4 +1,4 @@
-extern crate lalrpop;
+use lalrpop;
 
 fn main() {
     lalrpop::process_root().unwrap();

parser/src/error.rs

@@ -3,8 +3,8 @@
 extern crate lalrpop_util;
 use self::lalrpop_util::ParseError as InnerError;
 
-use lexer::{LexicalError, Location};
-use token::Tok;
+use crate::lexer::{LexicalError, Location};
+use crate::token::Tok;
 
 use std::error::Error;
 use std::fmt;

parser/src/lexer.rs

@@ -541,7 +541,7 @@ where
 
     fn is_char(&self) -> bool {
         match self.chr0 {
-            Some('a'...'z') | Some('A'...'Z') | Some('_') | Some('0'...'9') => true,
+            Some('a'..='z') | Some('A'..='Z') | Some('_') | Some('0'..='9') => true,
             _ => false,
         }
     }
@@ -549,19 +549,19 @@ where
     fn is_number(&self, radix: u32) -> bool {
         match radix {
             2 => match self.chr0 {
-                Some('0'...'1') => true,
+                Some('0'..='1') => true,
                 _ => false,
             },
             8 => match self.chr0 {
-                Some('0'...'7') => true,
+                Some('0'..='7') => true,
                 _ => false,
             },
             10 => match self.chr0 {
-                Some('0'...'9') => true,
+                Some('0'..='9') => true,
                 _ => false,
             },
             16 => match self.chr0 {
-                Some('0'...'9') | Some('a'...'f') | Some('A'...'F') => true,
+                Some('0'..='9') | Some('a'..='f') | Some('A'..='F') => true,
                 _ => false,
             },
             x => unimplemented!("Radix not implemented: {}", x),
@@ -686,8 +686,8 @@ where
             }
 
             match self.chr0 {
-                Some('0'...'9') => return Some(self.lex_number()),
-                Some('_') | Some('a'...'z') | Some('A'...'Z') => return Some(self.lex_identifier()),
+                Some('0'..='9') => return Some(self.lex_number()),
+                Some('_') | Some('a'..='z') | Some('A'..='Z') => return Some(self.lex_identifier()),
                 Some('#') => {
                     self.lex_comment();
                     continue;

parser/src/lib.rs

@@ -1,9 +1,6 @@
 #[macro_use]
 extern crate log;
 
-extern crate num_bigint;
-extern crate num_traits;
-
 pub mod ast;
 pub mod error;
 pub mod lexer;

parser/src/parser.rs

@@ -1,5 +1,3 @@
-extern crate lalrpop_util;
-
 use std::iter;
 
 use super::ast;

py_code_object/Cargo.toml

@@ -2,6 +2,7 @@
 name = "py_code_object"
 version = "0.1.0"
 authors = ["Shing Lyu <shing.lyu@gmail.com>"]
+edition = "2018"
 
 [dependencies]
 log = "0.3"

py_code_object/python_compiler/Cargo.toml

@@ -2,6 +2,7 @@
 name = "python_compiler"
 version = "0.1.0"
 authors = ["Shing Lyu <shing.lyu@gmail.com>"]
+edition = "2018"
 
 [dependencies]
 cpython = { git = "https://github.com/dgrunwald/rust-cpython.git" }

vm/Cargo.toml

@@ -2,6 +2,7 @@
 name = "rustpython_vm"
 version = "0.1.0"
 authors = ["Shing Lyu <shing.lyu@gmail.com>"]
+edition = "2018"
 
 [dependencies]
 bitflags = "1.0.4"

vm/src/import.rs

@@ -9,7 +9,7 @@ use super::compile;
 use super::pyobject::{DictProtocol, PyResult};
 use super::util;
 use super::vm::VirtualMachine;
-use obj::{objsequence, objstr};
+use crate::obj::{objsequence, objstr};
 
 fn import_uncached_module(
     vm: &mut VirtualMachine,

vm/src/stdlib/random.rs

@@ -5,7 +5,7 @@ extern crate rand;
 use super::super::obj::{objfloat, objtype};
 use super::super::pyobject::{PyContext, PyFuncArgs, PyObjectRef, PyResult, TypeProtocol};
 use super::super::VirtualMachine;
-use stdlib::random::rand::distributions::{Distribution, Normal};
+use crate::stdlib::random::rand::distributions::{Distribution, Normal};
 
 pub fn mk_module(ctx: &PyContext) -> PyObjectRef {
     let py_mod = ctx.new_module(&"random".to_string(), ctx.new_scope(None));

vm/src/sysmodule.rs

@@ -1,8 +1,8 @@
-use obj::objtype;
-use pyobject::{PyContext, PyFuncArgs, PyObjectRef, PyResult, TypeProtocol};
+use crate::obj::objtype;
+use crate::pyobject::{PyContext, PyFuncArgs, PyObjectRef, PyResult, TypeProtocol};
+use crate::vm::VirtualMachine;
 use std::rc::Rc;
 use std::{env, mem};
-use vm::VirtualMachine;
 
 /*
  * The magic sys module.

wasm/lib/Cargo.toml

@@ -5,6 +5,7 @@ authors = ["Ryan Liddle <ryan@rmliddle.com>"]
 license = "MIT"
 description = "A Python-3 (CPython >= 3.5.0) Interpreter written in Rust, compiled to WASM"
 repository = "https://github.com/RustPython/RustPython/tree/master/wasm/lib"
+edition = "2018"
 
 [lib]
 crate-type = ["cdylib", "rlib"]