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use std::fmt;
use std::sync::Arc;
use evm::Evm;
use util::{U256, Uint};
use super::interpreter::SharedCache;
#[derive(Debug, PartialEq, Clone)]
pub enum VMType {
#[cfg(feature = "jit")]
Jit,
Interpreter
}
impl fmt::Display for VMType {
#[cfg(feature="jit")]
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", match *self {
VMType::Jit => "JIT",
VMType::Interpreter => "INT"
})
}
#[cfg(not(feature="jit"))]
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", match *self {
VMType::Interpreter => "INT"
})
}
}
impl Default for VMType {
fn default() -> Self {
VMType::Interpreter
}
}
impl VMType {
#[cfg(feature = "jit")]
pub fn all() -> Vec<VMType> {
vec![VMType::Jit, VMType::Interpreter]
}
#[cfg(not(feature = "jit"))]
pub fn all() -> Vec<VMType> {
vec![VMType::Interpreter]
}
#[cfg(not(feature = "jit"))]
pub fn jit() -> Option<Self> {
None
}
#[cfg(feature = "jit")]
pub fn jit() -> Option<Self> {
Some(VMType::Jit)
}
}
#[derive(Clone)]
pub struct Factory {
evm: VMType,
evm_cache: Arc<SharedCache>,
}
impl Factory {
#[cfg(feature = "jit")]
pub fn create(&self, gas: U256) -> Box<Evm> {
match self.evm {
VMType::Jit => {
Box::new(super::jit::JitEvm::default())
},
VMType::Interpreter => if Self::can_fit_in_usize(gas) {
Box::new(super::interpreter::Interpreter::<usize>::new(self.evm_cache.clone()))
} else {
Box::new(super::interpreter::Interpreter::<U256>::new(self.evm_cache.clone()))
}
}
}
#[cfg(not(feature = "jit"))]
pub fn create(&self, gas: U256) -> Box<Evm> {
match self.evm {
VMType::Interpreter => if Self::can_fit_in_usize(gas) {
Box::new(super::interpreter::Interpreter::<usize>::new(self.evm_cache.clone()))
} else {
Box::new(super::interpreter::Interpreter::<U256>::new(self.evm_cache.clone()))
}
}
}
pub fn new(evm: VMType, cache_size: usize) -> Self {
Factory {
evm: evm,
evm_cache: Arc::new(SharedCache::new(cache_size)),
}
}
fn can_fit_in_usize(gas: U256) -> bool {
gas == U256::from(gas.low_u64() as usize)
}
}
impl Default for Factory {
#[cfg(all(feature = "jit", not(test)))]
fn default() -> Factory {
Factory {
evm: VMType::Jit,
evm_cache: Arc::new(SharedCache::default()),
}
}
#[cfg(any(not(feature = "jit"), test))]
fn default() -> Factory {
Factory {
evm: VMType::Interpreter,
evm_cache: Arc::new(SharedCache::default()),
}
}
}
#[test]
fn test_create_vm() {
let _vm = Factory::default().create(U256::zero());
}
#[macro_export]
macro_rules! evm_test(
(ignorejit => $name_test: ident: $name_jit: ident, $name_int: ident) => {
#[test]
#[ignore]
#[cfg(feature = "jit")]
fn $name_jit() {
$name_test(Factory::new(VMType::Jit, 1024 * 32));
}
#[test]
fn $name_int() {
$name_test(Factory::new(VMType::Interpreter, 1024 * 32));
}
};
($name_test: ident: $name_jit: ident, $name_int: ident) => {
#[test]
#[cfg(feature = "jit")]
fn $name_jit() {
$name_test(Factory::new(VMType::Jit, 1024 * 32));
}
#[test]
fn $name_int() {
$name_test(Factory::new(VMType::Interpreter, 1024 * 32));
}
}
);
#[macro_export]
macro_rules! evm_test_ignore(
($name_test: ident: $name_jit: ident, $name_int: ident) => {
#[test]
#[ignore]
#[cfg(feature = "jit")]
#[cfg(feature = "ignored-tests")]
fn $name_jit() {
$name_test(Factory::new(VMType::Jit, 1024 * 32));
}
#[test]
#[ignore]
#[cfg(feature = "ignored-tests")]
fn $name_int() {
$name_test(Factory::new(VMType::Interpreter, 1024 * 32));
}
}
);