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compiler: allow to emit opcodes directly

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This commit is contained in:
Evgeniy Stratonikov 2021-03-02 14:15:25 +03:00
parent 58ea4607d0
commit 578bbabd1d
4 changed files with 56 additions and 9 deletions
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25
pkg/compiler/codegen.go
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@ -939,7 +939,7 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
c.emittedEvents[name] = append(c.emittedEvents[name], params)
}
}
c.convertSyscall(n)
c.convertSyscall(f, n)
default:
emit.Call(c.prog.BinWriter, opcode.CALLL, f.label)
}
@ -1530,18 +1530,27 @@ func (c *codegen) getByteArray(expr ast.Expr) []byte {
}
}
func (c *codegen) convertSyscall(expr *ast.CallExpr) {
func (c *codegen) convertSyscall(f *funcScope, expr *ast.CallExpr) {
for _, arg := range expr.Args[1:] {
ast.Walk(c, arg)
}
c.emitReverse(len(expr.Args) - 1)
tv := c.typeAndValueOf(expr.Args[0])
syscall := constant.StringVal(tv.Value)
emit.Syscall(c.prog.BinWriter, syscall)
name := constant.StringVal(tv.Value)
if strings.HasPrefix(f.name, "Syscall") {
c.emitReverse(len(expr.Args) - 1)
emit.Syscall(c.prog.BinWriter, name)
// This NOP instruction is basically not needed, but if we do, we have a
// one to one matching avm file with neo-python which is very nice for debugging.
emit.Opcodes(c.prog.BinWriter, opcode.NOP)
// This NOP instruction is basically not needed, but if we do, we have a
// one to one matching avm file with neo-python which is very nice for debugging.
emit.Opcodes(c.prog.BinWriter, opcode.NOP)
} else {
op, err := opcode.FromString(name)
if err != nil {
c.prog.Err = fmt.Errorf("invalid opcode: %s", op)
return
}
emit.Opcodes(c.prog.BinWriter, op)
}
}
// emitSliceHelper emits 3 items on stack: slice, its first index, and its size.