Golang api.ConvertVar函数代码示例

func TestEvalAddrAndCast(t *testing.T) {
	withTestProcess("testvariables3", t, func(p *proc.Process, fixture protest.Fixture) {
		assertNoError(p.Continue(), t, "Continue() returned an error")
		c1addr, err := evalVariable(p, "&c1")
		assertNoError(err, t, "EvalExpression(&c1)")
		c1addrstr := api.ConvertVar(c1addr).SinglelineString()
		t.Logf("&c1 → %s", c1addrstr)
		if !strings.HasPrefix(c1addrstr, "(*main.cstruct)(0x") {
			t.Fatalf("Invalid value of EvalExpression(&c1) \"%s\"", c1addrstr)
		}

		aaddr, err := evalVariable(p, "&(c1.pb.a)")
		assertNoError(err, t, "EvalExpression(&(c1.pb.a))")
		aaddrstr := api.ConvertVar(aaddr).SinglelineString()
		t.Logf("&(c1.pb.a) → %s", aaddrstr)
		if !strings.HasPrefix(aaddrstr, "(*main.astruct)(0x") {
			t.Fatalf("invalid value of EvalExpression(&(c1.pb.a)) \"%s\"", aaddrstr)
		}

		a, err := evalVariable(p, "*"+aaddrstr)
		assertNoError(err, t, fmt.Sprintf("EvalExpression(*%s)", aaddrstr))
		t.Logf("*%s → %s", aaddrstr, api.ConvertVar(a).SinglelineString())
		assertVariable(t, a, varTest{aaddrstr, false, "struct main.astruct {A: 1, B: 2}", "", "struct main.astruct", nil})
	})
}

func TestMapEvaluation(t *testing.T) {
	withTestProcess("testvariables3", t, func(p *proc.Process, fixture protest.Fixture) {
		assertNoError(p.Continue(), t, "Continue() returned an error")
		m1v, err := evalVariable(p, "m1")
		assertNoError(err, t, "EvalVariable()")
		m1 := api.ConvertVar(m1v)
		t.Logf("m1 = %v", m1.MultilineString(""))

		if m1.Type != "map[string]main.astruct" {
			t.Fatalf("Wrong type: %s", m1.Type)
		}

		if len(m1.Children)/2 != 41 {
			t.Fatalf("Wrong number of children: %d", len(m1.Children)/2)
		}

		found := false
		for i := range m1.Children {
			if i%2 == 0 && m1.Children[i].Value == "Malone" {
				found = true
			}
		}
		if !found {
			t.Fatalf("Could not find Malone")
		}

		m1sliced, err := evalVariable(p, "m1[10:]")
		assertNoError(err, t, "EvalVariable(m1[10:])")
		if len(m1sliced.Children)/2 != int(m1.Len-10) {
			t.Fatalf("Wrong number of children (after slicing): %d", len(m1sliced.Children)/2)
		}
	})
}

func convertVars(pv []*proc.Variable) []api.Variable {
	vars := make([]api.Variable, 0, len(pv))
	for _, v := range pv {
		vars = append(vars, api.ConvertVar(v))
	}
	return vars
}

func (d *Debugger) PackageVariables(threadID int, filter string) ([]api.Variable, error) {
	regex, err := regexp.Compile(filter)
	if err != nil {
		return nil, fmt.Errorf("invalid filter argument: %s", err.Error())
	}

	vars := []api.Variable{}
	thread, found := d.process.Threads[threadID]
	if !found {
		return nil, fmt.Errorf("couldn't find thread %d", threadID)
	}
	scope, err := thread.Scope()
	if err != nil {
		return nil, err
	}
	pv, err := scope.PackageVariables()
	if err != nil {
		return nil, err
	}
	for _, v := range pv {
		if regex.Match([]byte(v.Name)) {
			vars = append(vars, api.ConvertVar(v))
		}
	}
	return vars, err
}

func TestUnsafePointer(t *testing.T) {
	withTestProcess("testvariables3", t, func(p *proc.Process, fixture protest.Fixture) {
		assertNoError(p.Continue(), t, "Continue() returned an error")
		up1v, err := evalVariable(p, "up1")
		assertNoError(err, t, "EvalVariable(up1)")
		up1 := api.ConvertVar(up1v)
		if ss := up1.SinglelineString(); !strings.HasPrefix(ss, "unsafe.Pointer(") {
			t.Fatalf("wrong value for up1: %s", ss)
		}
	})
}

// EvalVariableInScope will attempt to evaluate the variable represented by 'symbol'
// in the scope provided.
func (d *Debugger) EvalVariableInScope(scope api.EvalScope, symbol string) (*api.Variable, error) {
	s, err := d.process.ConvertEvalScope(scope.GoroutineID, scope.Frame)
	if err != nil {
		return nil, err
	}
	v, err := s.EvalVariable(symbol)
	if err != nil {
		return nil, err
	}
	return api.ConvertVar(v), err
}

func functionArguments(s *proc.EvalScope) ([]api.Variable, error) {
	pv, err := s.FunctionArguments()
	if err != nil {
		return nil, err
	}
	vars := make([]api.Variable, 0, len(pv))
	for _, v := range pv {
		vars = append(vars, api.ConvertVar(v))
	}
	return vars, nil
}

func (d *Debugger) EvalVariableInThread(threadID int, symbol string) (*api.Variable, error) {
	thread, found := d.process.Threads[threadID]
	if !found {
		return nil, fmt.Errorf("couldn't find thread %d", threadID)
	}
	v, err := thread.EvalVariable(symbol)
	if err != nil {
		return nil, err
	}
	converted := api.ConvertVar(v)
	return &converted, err
}

// EvalVariableInScope will attempt to evaluate the variable represented by 'symbol'
// in the scope provided.
func (d *Debugger) EvalVariableInScope(scope api.EvalScope, symbol string, cfg proc.LoadConfig) (*api.Variable, error) {
	d.processMutex.Lock()
	defer d.processMutex.Unlock()

	s, err := d.process.ConvertEvalScope(scope.GoroutineID, scope.Frame)
	if err != nil {
		return nil, err
	}
	v, err := s.EvalVariable(symbol, cfg)
	if err != nil {
		return nil, err
	}
	return api.ConvertVar(v), err
}

func (d *Debugger) collectBreakpointInformation(state *api.DebuggerState) error {
	if state == nil || state.Breakpoint == nil {
		return nil
	}

	bp := state.Breakpoint
	bpi := &api.BreakpointInfo{}
	state.BreakpointInfo = bpi

	if bp.Goroutine {
		g, err := d.process.CurrentThread.GetG()
		if err != nil {
			return err
		}
		bpi.Goroutine = api.ConvertGoroutine(g)
	}

	if bp.Stacktrace > 0 {
		rawlocs, err := d.process.CurrentThread.Stacktrace(bp.Stacktrace)
		if err != nil {
			return err
		}
		bpi.Stacktrace, err = d.convertStacktrace(rawlocs, false)
		if err != nil {
			return err
		}
	}

	s, err := d.process.CurrentThread.Scope()
	if err != nil {
		return err
	}

	if len(bp.Variables) > 0 {
		bpi.Variables = make([]api.Variable, len(bp.Variables))
	}
	for i := range bp.Variables {
		v, err := s.EvalVariable(bp.Variables[i])
		if err != nil {
			return err
		}
		bpi.Variables[i] = api.ConvertVar(v)
	}
	vars, err := functionArguments(s)
	if err == nil {
		bpi.Arguments = vars
	}
	return nil
}

func (d *Debugger) FunctionArguments(threadID int) ([]api.Variable, error) {
	vars := []api.Variable{}
	thread, found := d.process.Threads[threadID]
	if !found {
		return nil, fmt.Errorf("couldn't find thread %d", threadID)
	}
	pv, err := thread.FunctionArguments()
	if err != nil {
		return nil, err
	}
	for _, v := range pv {
		vars = append(vars, api.ConvertVar(v))
	}
	return vars, err
}

func (d *Debugger) LocalVariables(scope api.EvalScope) ([]api.Variable, error) {
	s, err := d.process.ConvertEvalScope(scope.GoroutineID, scope.Frame)
	if err != nil {
		return nil, err
	}
	pv, err := s.LocalVariables()
	if err != nil {
		return nil, err
	}
	vars := make([]api.Variable, 0, len(pv))
	for _, v := range pv {
		vars = append(vars, api.ConvertVar(v))
	}
	return vars, err
}

func TestMultilineVariableEvaluation(t *testing.T) {
	testcases := []varTest{
		{"a1", true, "\"foofoofoofoofoofoo\"", "", "struct string", nil},
		{"a11", true, `[3]main.FooBar [
	{Baz: 1, Bur: "a"},
	{Baz: 2, Bur: "b"},
	{Baz: 3, Bur: "c"},
]`, "", "[3]main.FooBar", nil},
		{"a12", true, `[]main.FooBar len: 2, cap: 2, [
	{Baz: 4, Bur: "d"},
	{Baz: 5, Bur: "e"},
]`, "", "struct []main.FooBar", nil},
		{"a13", true, `[]*main.FooBar len: 3, cap: 3, [
	*{Baz: 6, Bur: "f"},
	*{Baz: 7, Bur: "g"},
	*{Baz: 8, Bur: "h"},
]`, "", "struct []*main.FooBar", nil},
		{"a2", true, "6", "10", "int", nil},
		{"a4", true, "[2]int [1,2]", "", "[2]int", nil},
		{"a5", true, "[]int len: 5, cap: 5, [1,2,3,4,5]", "", "struct []int", nil},
		{"a6", true, "main.FooBar {Baz: 8, Bur: \"word\"}", "", "main.FooBar", nil},
		{"a7", true, "*main.FooBar {Baz: 5, Bur: \"strum\"}", "", "*main.FooBar", nil},
		{"a8", true, "main.FooBar2 {Bur: 10, Baz: \"feh\"}", "", "main.FooBar2", nil},
		{"a9", true, "*main.FooBar nil", "", "*main.FooBar", nil},
		{"a8", true, "main.FooBar2 {Bur: 10, Baz: \"feh\"}", "", "main.FooBar2", nil}, // reread variable after member
		{"i32", true, "[2]int32 [1,2]", "", "[2]int32", nil},
		{"ba", true, "[]int len: 200, cap: 200, [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,...+136 more]", "", "struct []int", nil},
		{"ms", true, `main.Nest {
	Level: 0,
	Nest: *main.Nest {
		Level: 1,
		Nest: *(*main.Nest)(…`, "", "main.Nest", nil},
	}

	withTestProcess("testvariables", t, func(p *proc.Process, fixture protest.Fixture) {
		err := p.Continue()
		assertNoError(err, t, "Continue() returned an error")

		for _, tc := range testcases {
			variable, err := evalVariable(p, tc.name)
			assertNoError(err, t, "EvalVariable() returned an error")
			if ms := api.ConvertVar(variable).MultilineString(""); !matchStringOrPrefix(ms, tc.value) {
				t.Fatalf("Expected %s got %s (variable %s)\n", tc.value, ms, variable.Name)
			}
		}
	})
}

func assertVariable(t *testing.T, variable *proc.Variable, expected varTest) {
	if expected.preserveName {
		if variable.Name != expected.name {
			t.Fatalf("Expected %s got %s\n", expected.name, variable.Name)
		}
	}

	cv := api.ConvertVar(variable)

	if cv.Type != expected.varType {
		t.Fatalf("Expected %s got %s (for variable %s)\n", expected.varType, cv.Type, expected.name)
	}

	if ss := cv.SinglelineString(); !matchStringOrPrefix(ss, expected.value) {
		t.Fatalf("Expected %#v got %#v (for variable %s)\n", expected.value, ss, expected.name)
	}
}

func TestComplexSetting(t *testing.T) {
	withTestProcess("testvariables", t, func(p *proc.Process, fixture protest.Fixture) {
		err := p.Continue()
		assertNoError(err, t, "Continue() returned an error")

		h := func(setExpr, value string) {
			assertNoError(setVariable(p, "c128", setExpr), t, "SetVariable()")
			variable, err := evalVariable(p, "c128")
			assertNoError(err, t, "EvalVariable()")
			if s := api.ConvertVar(variable).SinglelineString(); s != value {
				t.Fatalf("Wrong value of c128: \"%s\", expected \"%s\" after setting it to \"%s\"", s, value, setExpr)
			}
		}

		h("3.2i", "(0 + 3.2i)")
		h("1.1", "(1.1 + 0i)")
		h("1 + 3.3i", "(1 + 3.3i)")
		h("complex(1.2, 3.4)", "(1.2 + 3.4i)")
	})
}