mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-11-29 03:41:45 +00:00
6b21ad9922
Everywhere including examples, external interop APIs, bindings generators
code and in other valuable places. A couple of `interface{}` usages are
intentionally left in the CHANGELOG.md, documentation and tests.
76 lines
2.2 KiB
Go
76 lines
2.2 KiB
Go
package compiler_test
|
|
|
|
import (
|
|
"math/big"
|
|
"testing"
|
|
|
|
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
|
|
)
|
|
|
|
func TestGenDeclWithMultiRet(t *testing.T) {
|
|
t.Run("global var decl", func(t *testing.T) {
|
|
src := `package foo
|
|
func Main() int {
|
|
var a, b = f()
|
|
return a + b
|
|
}
|
|
func f() (int, int) {
|
|
return 1, 2
|
|
}`
|
|
eval(t, src, big.NewInt(3))
|
|
})
|
|
t.Run("local var decl", func(t *testing.T) {
|
|
src := `package foo
|
|
var a, b = f()
|
|
func Main() int {
|
|
return a + b
|
|
}
|
|
func f() (int, int) {
|
|
return 1, 2
|
|
}`
|
|
eval(t, src, big.NewInt(3))
|
|
})
|
|
}
|
|
|
|
func TestUnderscoreLocalVarDontEmitCode(t *testing.T) {
|
|
src := `package foo
|
|
type Foo struct { Int int }
|
|
func Main() int {
|
|
var _ int
|
|
var _ = 1
|
|
var (
|
|
A = 2
|
|
_ = A + 3
|
|
_, B, _ = 4, 5, 6
|
|
_, _, _ = f(A, B) // unused, but has function call, so the code is expected
|
|
_, C, _ = f(A, B)
|
|
)
|
|
var D = 7 // unused but named, so the code is expected
|
|
_ = D
|
|
var _ = Foo{ Int: 5 }
|
|
var fo = Foo{ Int: 3 }
|
|
var _ = 1 + A + fo.Int
|
|
var _ = fo.GetInt() // unused, but has method call, so the code is expected
|
|
return C
|
|
}
|
|
func f(a, b int) (int, int, int) {
|
|
return 8, 9, 10
|
|
}
|
|
func (fo Foo) GetInt() int {
|
|
return fo.Int
|
|
}`
|
|
eval(t, src, big.NewInt(9), []any{opcode.INITSLOT, []byte{5, 0}}, // local slot for A, B, C, D, fo
|
|
opcode.PUSH2, opcode.STLOC0, // store A
|
|
opcode.PUSH5, opcode.STLOC1, // store B
|
|
opcode.LDLOC0, opcode.LDLOC1, opcode.SWAP, []any{opcode.CALL, []byte{27}}, // evaluate f() first time
|
|
opcode.DROP, opcode.DROP, opcode.DROP, // drop all values from f
|
|
opcode.LDLOC0, opcode.LDLOC1, opcode.SWAP, []any{opcode.CALL, []byte{19}}, // evaluate f() second time
|
|
opcode.DROP, opcode.STLOC2, opcode.DROP, // store C
|
|
opcode.PUSH7, opcode.STLOC3, // store D
|
|
opcode.LDLOC3, opcode.DROP, // empty assignment
|
|
opcode.PUSH3, opcode.PUSH1, opcode.PACKSTRUCT, opcode.STLOC4, // fo decl
|
|
opcode.LDLOC4, []any{opcode.CALL, []byte{12}}, opcode.DROP, // fo.GetInt()
|
|
opcode.LDLOC2, opcode.RET, // return C
|
|
[]any{opcode.INITSLOT, []byte{0, 2}}, opcode.PUSH10, opcode.PUSH9, opcode.PUSH8, opcode.RET, // f
|
|
[]any{opcode.INITSLOT, []byte{0, 1}}, opcode.LDARG0, opcode.PUSH0, opcode.PICKITEM, opcode.RET) // (fo Foo) GetInt() int
|
|
}
|