Compiler & Language definition for the Ethereum project
This is the Mutan 2.0 branch.
Mutan is a C-Like language for the Ethereum project. Mutan supports a full, dynamic higher level language that compiles to native Ethereum Assembler. The language definition and documentation can be found on go-ethereum wiki.
A simple online editor and compiler can be found here
Install compiler
go get -u github.com/obscuren/mutan/mutan
CLI
mutan [flags] filename
-s="" Compile string
-asm Output asm instead of bytecode/hex
-b Output raw byte array instead of hex
Release notes
0.6 (develop)
const a = 10
0.5
- Scoping using
{ var x = 10; } - Proper else if clauses
if { } else if { } else { } - Added logical and / or
var x = 1 && 2; if 1 && 0 { } - Changed the
thiskeyword tomessage.
0.4
Didn't keep release notes :-)
Syntax
import "std.mu"
func fn(var a, var b) {
var[2] c
c[0] = a
c[1] = b
return c[1]
}
var a = fn(0, 1)
b := 10
if a > b {
stop()
} else if 0 && 1 || 0 {
// :-(
stop()
} else {
// :-)
if !a {
if message.data[0] ** 10 >= 10 {
message.data[0] = 1000;
}
}
}
func ptrs(var * a) {
*a = *a * 10;
}
ptrs(&a)
message.store[a] = 10000
message.store[b] = message.origin()
for i := 0; i < 10; i++ {
var[10] out
call(0xaabbccddeeff112233445566, 0, 10000, i, out)
}
// tx without input data
transact(0xa78f6abe, 10000, nil)
// no args and return values
call(0xab, 0, 10000, nil, nil)
// create contract
var ret = create(value, 0xaabbccddeeff0099887766552211)
asm {
push1 10
push1 0
mstore
}
return 20Mutan © Jeffrey Wilcke