feat: update string type checker | test: string, int, float, any typecheckers

feat: string type checker pre-process min,max/fixed length(s) before returning the CheckerFunc

feat: add typecheckers for 'any', 'float' and 'int' (managing number overflows)

typecheck/builtin/any_test.go

@@ -0,0 +1,78 @@
+package builtin_test
+
+import (
+	"testing"
+
+	"git.xdrm.io/go/aicra/typecheck/builtin"
+)
+
+func TestAny_New(t *testing.T) {
+	inst := interface{}(builtin.NewAny())
+
+	switch cast := inst.(type) {
+	case *builtin.Any:
+		return
+	default:
+		t.Errorf("expect %T ; got %T", &builtin.Any{}, cast)
+	}
+}
+
+func TestAny_AvailableTypes(t *testing.T) {
+
+	inst := builtin.NewAny()
+
+	tests := []struct {
+		Type    string
+		Handled bool
+	}{
+		{"any", true},
+		{" any", false},
+		{"any ", false},
+		{" any ", false},
+		{"Any", false},
+		{"ANY", false},
+		{"anything-else", false},
+	}
+
+	for _, test := range tests {
+		checker := inst.Checker(test.Type)
+
+		if checker == nil {
+			if test.Handled {
+				t.Errorf("expect %q to be handled", test.Type)
+			}
+			continue
+		}
+
+		if !test.Handled {
+			t.Errorf("expect %q NOT to be handled", test.Type)
+		}
+	}
+
+}
+
+func TestAny_AlwaysTrue(t *testing.T) {
+	const typeName = "any"
+
+	checker := builtin.NewAny().Checker(typeName)
+	if checker == nil {
+		t.Errorf("expect %q to be handled", typeName)
+		t.Fail()
+	}
+
+	values := []interface{}{
+		1,
+		0.1,
+		nil,
+		"string",
+		[]byte("bytes"),
+	}
+
+	for i, value := range values {
+		if !checker(value) {
+			t.Errorf("%d: expect value to be valid", i)
+			t.Fail()
+		}
+	}
+
+}

typecheck/builtin/float64.go

@@ -1,7 +1,7 @@
 package builtin
 
 import (
-	"strconv"
+	"encoding/json"
 
 	"git.xdrm.io/go/aicra/typecheck"
 )
@@ -41,7 +41,8 @@ func readFloat(value interface{}) (float64, bool) {
 
 		// serialized string -> try to convert to float
 	case string:
-		floatVal, err := strconv.ParseFloat(cast, 64)
+		num := json.Number(cast)
+		floatVal, err := num.Float64()
 		return floatVal, err == nil
 
 		// unknown type

typecheck/builtin/int.go

@@ -1,6 +1,9 @@
 package builtin
 
 import (
+	"encoding/json"
+	"math"
+
 	"git.xdrm.io/go/aicra/typecheck"
 )
 
@@ -19,12 +22,37 @@ func (Int) Checker(typeName string) typecheck.CheckerFunc {
 		return nil
 	}
 	return func(value interface{}) bool {
-		cast, isFloat := readFloat(value)
+		_, isInt := readInt(value)
 
-		if !isFloat {
-			return false
+		return isInt
+	}
 }
 
-		return cast == float64(int(cast))
+// readInt tries to read a serialized int and returns whether it succeeded.
+func readInt(value interface{}) (int, bool) {
+	switch cast := value.(type) {
+
+	case int:
+		return cast, true
+
+	case uint:
+		overflows := cast > math.MaxInt64
+		return int(cast), !overflows
+
+	case float64:
+		intVal := int(cast)
+		overflows := cast < float64(math.MinInt64) || cast > float64(math.MaxInt64)
+		return intVal, cast == float64(intVal) && !overflows
+
+		// serialized string -> try to convert to float
+	case string:
+		num := json.Number(cast)
+		intVal, err := num.Int64()
+		return int(intVal), err == nil
+
+		// unknown type
+	default:
+		return 0, false
+
 	}
 }

typecheck/builtin/int_test.go

@@ -0,0 +1,107 @@
+package builtin_test
+
+import (
+	"math"
+	"testing"
+
+	"git.xdrm.io/go/aicra/typecheck/builtin"
+)
+
+func TestInt_New(t *testing.T) {
+	inst := interface{}(builtin.NewInt())
+
+	switch cast := inst.(type) {
+	case *builtin.Int:
+		return
+	default:
+		t.Errorf("expect %T ; got %T", &builtin.Int{}, cast)
+	}
+}
+
+func TestInt_AvailableTypes(t *testing.T) {
+
+	inst := builtin.NewInt()
+
+	tests := []struct {
+		Type    string
+		Handled bool
+	}{
+		{"int", true},
+		{"Int", false},
+		{"INT", false},
+		{" int", false},
+		{"int ", false},
+		{" int ", false},
+	}
+
+	for _, test := range tests {
+		checker := inst.Checker(test.Type)
+
+		if checker == nil {
+			if test.Handled {
+				t.Errorf("expect %q to be handled", test.Type)
+			}
+			continue
+		}
+
+		if !test.Handled {
+			t.Errorf("expect %q NOT to be handled", test.Type)
+		}
+	}
+
+}
+
+func TestInt_Values(t *testing.T) {
+	const typeName = "int"
+
+	checker := builtin.NewInt().Checker(typeName)
+	if checker == nil {
+		t.Errorf("expect %q to be handled", typeName)
+		t.Fail()
+	}
+
+	tests := []struct {
+		Value interface{}
+		Valid bool
+	}{
+		{-math.MaxInt64, true},
+		{-1, true},
+		{0, true},
+		{1, true},
+		{math.MaxInt64, true},
+
+		// overflows from type conversion
+		{uint(math.MaxInt64), true},
+		{uint(math.MaxInt64 + 1), false},
+
+		{float64(math.MinInt64), true},
+		// we cannot just substract 1 because of how precision works
+		{float64(math.MinInt64 - 1024 - 1), false},
+
+		// WARNING : this is due to how floats are compared
+		{float64(math.MaxInt64), false},
+		// we cannot just add 1 because of how precision works
+		{float64(math.MaxInt64 + 1024 + 2), false},
+
+		{"string", false},
+		{[]byte("bytes"), false},
+		{-0.1, false},
+		{0.1, false},
+		{nil, false},
+	}
+
+	for i, test := range tests {
+		if checker(test.Value) {
+			if !test.Valid {
+				t.Errorf("%d: expect value to be invalid", i)
+				t.Fail()
+			}
+			continue
+		}
+		if test.Valid {
+			t.Errorf("%d: expect value to be valid", i)
+			t.Fail()
+		}
+	}
+
+}

typecheck/builtin/string.go

@@ -29,45 +29,49 @@ func (s String) Checker(typeName string) typecheck.CheckerFunc {
 		return nil
 	}
 
+	var (
+		mustFail bool
+		min, max int
+	)
+
+	// extract fixed length
+	if fixedLengthMatches != nil {
+		exLen, ok := s.getFixedLength(fixedLengthMatches)
+		if !ok {
+			mustFail = true
+		}
+		min = exLen
+		max = exLen
+
+		// extract variable length
+	} else if variableLengthMatches != nil {
+		exMin, exMax, ok := s.getVariableLength(variableLengthMatches)
+		if !ok {
+			mustFail = true
+		}
+		min = exMin
+		max = exMax
+	}
+
 	return func(value interface{}) bool {
+		// preprocessing error
+		if mustFail {
+			return false
+		}
+
 		// check type
 		strValue, isString := value.(string)
 		if !isString {
 			return false
 		}
 
-		// check fixed length
-		if fixedLengthMatches != nil {
-
-			// incoherence fail
-			if len(fixedLengthMatches) < 2 {
-				return false
+		if isSimpleString {
+			return true
 		}
 
-			// extract length
-			fixedLen, err := strconv.ParseUint(fixedLengthMatches[1], 10, 64)
-			if err != nil {
-				return false
-			}
-
-			// check against value
-			return len(strValue) == int(fixedLen)
-		}
-
-		// check variable length
-		if variableLengthMatches != nil {
-
-			minLen, maxLen, ok := s.getVariableLength(variableLengthMatches)
-			if !ok {
-				return false
-			}
-
-			// check against value
-			return len(strValue) >= minLen && len(strValue) <= maxLen
-		}
-
-		// if should NEVER be here ; so fail
-		return false
+		// check length against previously extracted length
+		l := len(strValue)
+		return l >= min && l <= max
 	}
 }
 
@@ -79,8 +83,8 @@ func (String) getFixedLength(regexMatches []string) (int, bool) {
 	}
 
 	// extract length
-	fixedLength, err := strconv.ParseUint(regexMatches[1], 10, 64)
-	if err != nil {
+	fixedLength, err := strconv.ParseInt(regexMatches[1], 10, 64)
+	if err != nil || fixedLength < 0 {
 		return 0, false
 	}
 
@@ -95,13 +99,13 @@ func (String) getVariableLength(regexMatches []string) (int, int, bool) {
 	}
 
 	// extract minimum length
-	minLen, err := strconv.ParseUint(regexMatches[1], 10, 64)
-	if err != nil {
+	minLen, err := strconv.ParseInt(regexMatches[1], 10, 64)
+	if err != nil || minLen < 0 {
 		return 0, 0, false
 	}
 	// extract maximum length
-	maxLen, err := strconv.ParseUint(regexMatches[2], 10, 64)
-	if err != nil {
+	maxLen, err := strconv.ParseInt(regexMatches[2], 10, 64)
+	if err != nil || maxLen < 0 {
 		return 0, 0, false
 	}
 

typecheck/builtin/string_test.go

@@ -0,0 +1,204 @@
+package builtin_test
+
+import (
+	"testing"
+
+	"git.xdrm.io/go/aicra/typecheck/builtin"
+)
+
+func TestString_New(t *testing.T) {
+	inst := interface{}(builtin.NewString())
+
+	switch cast := inst.(type) {
+	case *builtin.String:
+		return
+	default:
+		t.Errorf("expect %T ; got %T", &builtin.String{}, cast)
+	}
+}
+
+func TestString_AvailableTypes(t *testing.T) {
+
+	inst := builtin.NewString()
+
+	tests := []struct {
+		Type    string
+		Handled bool
+	}{
+		{"string", true},
+		{"String", false},
+		{"STRING", false},
+		{" string", false},
+		{"string ", false},
+		{" string ", false},
+
+		{"string(1)", true},
+		{"string( 1)", false},
+		{"string(1 )", false},
+		{"string( 1 )", false},
+
+		{"string(1,2)", true},
+		{"string(1, 2)", true},
+		{"string(1,  2)", false},
+		{"string( 1,2)", false},
+		{"string(1,2 )", false},
+		{"string( 1,2 )", false},
+		{"string( 1, 2)", false},
+		{"string(1, 2 )", false},
+		{"string( 1, 2 )", false},
+	}
+
+	for _, test := range tests {
+		checker := inst.Checker(test.Type)
+
+		if checker == nil {
+			if test.Handled {
+				t.Errorf("expect %q to be handled", test.Type)
+			}
+			continue
+		}
+
+		if !test.Handled {
+			t.Errorf("expect %q NOT to be handled", test.Type)
+		}
+	}
+
+}
+
+func TestString_AnyLength(t *testing.T) {
+	const typeName = "string"
+
+	checker := builtin.NewString().Checker(typeName)
+	if checker == nil {
+		t.Errorf("expect %q to be handled", typeName)
+		t.Fail()
+	}
+
+	tests := []struct {
+		Value interface{}
+		Valid bool
+	}{
+		{"string", true},
+		{[]byte("bytes"), false},
+		{1, false},
+		{0.1, false},
+		{nil, false},
+	}
+
+	for i, test := range tests {
+		if checker(test.Value) {
+			if !test.Valid {
+				t.Errorf("%d: expect value to be invalid", i)
+				t.Fail()
+			}
+			continue
+		}
+		if test.Valid {
+			t.Errorf("%d: expect value to be valid", i)
+			t.Fail()
+
+		}
+	}
+
+}
+func TestString_FixedLength(t *testing.T) {
+
+	tests := []struct {
+		Type  string
+		Value interface{}
+		Valid bool
+	}{
+		{"string(0)", "", true},
+		{"string(0)", "", true},
+		{"string(0)", "1", false},
+
+		{"string(16)", "1234567890123456", true},
+		{"string(16)", "123456789012345", false},
+		{"string(16)", "12345678901234567", false},
+
+		{"string(1000)", string(make([]byte, 1000)), true},
+		{"string(1000)", string(make([]byte, 1000-1)), false},
+		{"string(1000)", string(make([]byte, 1000+1)), false},
+	}
+
+	for i, test := range tests {
+		checker := builtin.NewString().Checker(test.Type)
+		if checker == nil {
+			t.Errorf("%d: expect %q to be handled", i, test.Type)
+			t.Fail()
+			continue
+		}
+
+		if checker(test.Value) {
+			if !test.Valid {
+				t.Errorf("%d: expect value to be invalid", i)
+				t.Fail()
+			}
+			continue
+		}
+		if test.Valid {
+			t.Errorf("%d: expect value to be valid", i)
+			t.Fail()
+
+		}
+	}
+
+}
+func TestString_VariableLength(t *testing.T) {
+
+	tests := []struct {
+		Type  string
+		Value interface{}
+		Valid bool
+	}{
+		{"string(0,0)", "", true},
+		{"string(0,0)", "1", false},
+
+		{"string(0,1)", "", true},
+		{"string(0,1)", "1", true},
+		{"string(0,1)", "12", false},
+
+		{"string(5,16)", "1234", false},
+		{"string(5,16)", "12345", true},
+		{"string(5,16)", "123456", true},
+		{"string(5,16)", "1234567", true},
+		{"string(5,16)", "12345678", true},
+		{"string(5,16)", "123456789", true},
+		{"string(5,16)", "1234567890", true},
+		{"string(5,16)", "12345678901", true},
+		{"string(5,16)", "123456789012", true},
+		{"string(5,16)", "1234567890123", true},
+		{"string(5,16)", "12345678901234", true},
+		{"string(5,16)", "123456789012345", true},
+		{"string(5,16)", "1234567890123456", true},
+		{"string(5,16)", "12345678901234567", false},
+
+		{"string(999,1000)", string(make([]byte, 998)), false},
+		{"string(999,1000)", string(make([]byte, 999)), true},
+		{"string(999,1000)", string(make([]byte, 1000)), true},
+		{"string(999,1000)", string(make([]byte, 1001)), false},
+	}
+
+	for i, test := range tests {
+		checker := builtin.NewString().Checker(test.Type)
+		if checker == nil {
+			t.Errorf("%d: expect %q to be handled", i, test.Type)
+			t.Fail()
+			continue
+		}
+
+		if checker(test.Value) {
+			if !test.Valid {
+				t.Errorf("%d: expect value to be invalid", i)
+				t.Fail()
+			}
+			continue
+		}
+		if test.Valid {
+			t.Errorf("%d: expect value to be valid", i)
+			t.Fail()
+
+		}
+	}
+
+}