package compiler_test import ( "math/big" "testing" "github.com/nspcc-dev/neo-go/pkg/vm" ) var sliceTestCases = []testCase{ { "constant index", ` package foo func Main() int { a := []int{0,0} a[1] = 42 return a[1]+0 } `, big.NewInt(42), }, { "variable index", ` package foo func Main() int { a := []int{0,0} i := 1 a[i] = 42 return a[1]+0 } `, big.NewInt(42), }, { "increase slice element with +=", `package foo func Main() int { a := []int{1, 2, 3} a[1] += 40 return a[1] }`, big.NewInt(42), }, { "complex test", ` package foo func Main() int { a := []int{1,2,3} x := a[0] a[x] = a[x] + 4 a[x] = a[x] + a[2] return a[1] } `, big.NewInt(9), }, { "slice literals with variables", ` package foo func Main() int { elem := 7 a := []int{6, elem, 8} return a[1] } `, big.NewInt(7), }, { "slice literals with expressions", ` package foo func Main() int { elem := []int{3, 7} a := []int{6, elem[1]*2+1, 24} return a[1] } `, big.NewInt(15), }, { "sub-slice with literal bounds", ` package foo func Main() []byte { a := []byte{0, 1, 2, 3} b := a[1:3] return b }`, []byte{1, 2}, }, { "sub-slice with constant bounds", ` package foo const x = 1 const y = 3 func Main() []byte { a := []byte{0, 1, 2, 3} b := a[x:y] return b }`, []byte{1, 2}, }, { "sub-slice with variable bounds", ` package foo func Main() []byte { a := []byte{0, 1, 2, 3} x := 1 y := 3 b := a[x:y] return b }`, []byte{1, 2}, }, { "sub-slice with no lower bound", ` package foo func Main() []byte { a := []byte{0, 1, 2, 3} b := a[:3] return b }`, []byte{0, 1, 2}, }, { "sub-slice with no upper bound", ` package foo func Main() []byte { a := []byte{0, 1, 2, 3} b := a[2:] return b }`, []byte{2, 3}, }, { "declare byte slice", `package foo func Main() []byte { var a []byte a = append(a, 1) a = append(a, 2) return a }`, []byte{1, 2}, }, { "declare compound slice", `package foo func Main() []string { var a []string a = append(a, "a") a = append(a, "b") return a }`, []vm.StackItem{ vm.NewByteArrayItem([]byte("a")), vm.NewByteArrayItem([]byte("b")), }, }, { "declare compound slice alias", `package foo type strs []string func Main() []string { var a strs a = append(a, "a") a = append(a, "b") return a }`, []vm.StackItem{ vm.NewByteArrayItem([]byte("a")), vm.NewByteArrayItem([]byte("b")), }, }, } func TestSliceOperations(t *testing.T) { runTestCases(t, sliceTestCases) } func TestJumps(t *testing.T) { src := ` package foo func Main() []byte { buf := []byte{0x62, 0x01, 0x00} return buf } ` eval(t, src, []byte{0x62, 0x01, 0x00}) }