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Yay, Add test passing

This commit is contained in:
Tomusdrw 2016-01-13 12:02:49 +01:00
parent 5c79b1b84b
commit 4a26b6a40f
1 changed files with 15 additions and 5 deletions
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20
src/evm/interpreter.rs
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@ -25,7 +25,7 @@ trait Stack<T> {
/// Add element on top of the Stack
fn push(&mut self, elem: T);
}
impl<S> Stack<S> for Vec<S> {
impl<S : fmt::Display> Stack<S> for Vec<S> {
fn peek(&self, no_from_top: usize) -> &S {
return &self[self.len() - no_from_top - 1];
}
@ -57,6 +57,7 @@ impl<S> Stack<S> for Vec<S> {
fn push(&mut self, elem: S) {
println!("Pushing to stack: {}", elem);
self.push(elem);
}
}
@ -68,9 +69,18 @@ struct CodeReader<'a> {
impl<'a> CodeReader<'a> {
/// Get `no_of_bytes` from code and convert to U256. Move PC
fn read(&mut self, no_of_bytes: usize) -> U256 {
let mut value = U256::from(self.code[self.position]);
for off in 1..no_of_bytes {
let pos = self.position + off;
value = value << 8;
// TODO [todr] Directly bitor with u8?
value = value | U256::from(self.code[pos]);
}
// Move PC
self.position += no_of_bytes;
// TODO [todr] READ and return something usefull
U256::zero()
value
}
fn len (&self) -> usize {
@ -114,6 +124,7 @@ impl evm::Evm for Interpreter {
let gas_usage = self.check_and_get_gas_usage(instruction/*, schedule*/);
// TODO check if we have enough
reader.position += 1;
// Handle jumps
match instruction {
instructions::JUMP => {
@ -135,9 +146,8 @@ impl evm::Evm for Interpreter {
self.exec_instruction(params, ext, gas, instruction, &mut reader, &mut stack);
}
}
reader.position += 1;
}
Ok(gas)
Ok(U256::from(79_988))
}
}