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compiler: compile appcall with dynamic argument

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Closes #1160
This commit is contained in:
Anna Shaleva 2020-07-08 17:37:42 +03:00
parent cf1e5243b9
commit 56a5c9db11
2 changed files with 20 additions and 1 deletions
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2
pkg/compiler/codegen.go
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@ -1216,7 +1216,7 @@ func (c *codegen) convertBuiltin(expr *ast.CallExpr) {
case "AppCall":
c.emitReverse(len(expr.Args))
buf := c.getByteArray(expr.Args[0])
if len(buf) != 20 {
if buf != nil && len(buf) != 20 {
c.prog.Err = errors.New("invalid script hash")
}
emit.Syscall(c.prog.BinWriter, "System.Contract.Call")

19
pkg/compiler/interop_test.go
View file

@ -127,6 +127,25 @@ func TestAppCall(t *testing.T) {
assertResult(t, v, []byte{1, 2, 3, 4})
})
t.Run("convert from var", func(t *testing.T) {
src := `
package foo
import "github.com/nspcc-dev/neo-go/pkg/interop/engine"
func Main() []byte {
x := []byte{1, 2}
y := []byte{3, 4}
var addr = []byte(` + fmt.Sprintf("%#v", string(ih.BytesBE())) + `)
result := engine.AppCall(addr, x, y)
return result.([]byte)
}
`
v := spawnVM(t, ic, src)
require.NoError(t, v.Run())
assertResult(t, v, []byte{1, 2, 3, 4})
})
}
func getAppCallScript(h string) string {