go-pkg/expr
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

util files moved form kern to util package

Browse Source
This commit is contained in:
Celestino Amoroso
2026-04-29 11:03:36 +02:00
parent 4d910dd069
commit 8787973de0
20 changed files with 284 additions and 250 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kern/bool.go
+27
View File
@@ -0,0 +1,27 @@
// Copyright (c) 2024-2026 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.
// string.go
package kern
func IsBool(v any) (ok bool) {
_, ok = v.(bool)
return ok
}
func ToBool(v any) (b bool, ok bool) {
ok = true
switch x := v.(type) {
case string:
b = len(x) > 0
case float64:
b = x != 0.0
case int64:
b = x != 0
case bool:
b = x
default:
ok = false
}
return
}
kern/dict-type.go
+5
View File
@@ -12,6 +12,11 @@ import (
type DictType map[any]any
func IsDict(v any) (ok bool) {
_, ok = v.(*DictType)
return ok
}
func MakeDict() (dict *DictType) {
d := make(DictType)
dict = &d
kern/float.go
+23
View File
@@ -0,0 +1,23 @@
// Copyright (c) 2024-2026 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.
// float.go
package kern
func IsFloat(v any) (ok bool) {
_, ok = v.(float64)
return ok
}
func AnyFloat(v any) (float float64, ok bool) {
ok = true
switch floatval := v.(type) {
case float32:
float = float64(floatval)
case float64:
float = floatval
default:
ok = false
}
return
}
kern/fraction-type.go
+12
View File
@@ -367,3 +367,15 @@ func IsFraction(v any) (ok bool) {
_, ok = v.(*FractionType)
return ok
}
// func IsFract(v any) (ok bool) {
// _, ok = v.(*FractionType)
// return ok
// }
func IsRational(v any) (ok bool) {
if _, ok = v.(*FractionType); !ok {
_, ok = v.(int64)
}
return ok
}
kern/function.go
+5
View File
@@ -14,6 +14,11 @@ type FuncTemplate func(ctx ExprContext, name string, args map[string]any) (resul
type DeepFuncTemplate func(a, b any) (eq bool, err error)
func IsFunctor(v any) (ok bool) {
_, ok = v.(Functor)
return
}
// ---- Common functor definition
type BaseFunctor struct {
info ExprFunc
kern/iterator.go
+5
View File
@@ -45,3 +45,8 @@ type ExtIterator interface {
func ErrNoOperation(name string) error {
return fmt.Errorf("no %s() function defined in the data-source", name)
}
func IsIterator(v any) (ok bool) {
_, ok = v.(Iterator)
return
}
kern/list-type.go
+5
View File
@@ -12,6 +12,11 @@ import (
type ListType []any
func IsList(v any) (ok bool) {
_, ok = v.(*ListType)
return ok
}
func NewListA(listAny ...any) (list *ListType) {
if listAny == nil {
listAny = []any{}
kern/number.go
+77
View File
@@ -0,0 +1,77 @@
// Copyright (c) 2024-2026 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.
// number.go
package kern
import (
"fmt"
)
func IsInteger(v any) (ok bool) {
_, ok = v.(int64)
return ok
}
func IsNumber(v any) (ok bool) {
return IsFloat(v) || IsInteger(v)
}
func IsNumOrFract(v any) (ok bool) {
return IsFloat(v) || IsInteger(v) || IsFraction(v)
}
func IsNumberString(v any) (ok bool) {
return IsString(v) || IsNumber(v)
}
func NumAsFloat(v any) (f float64) {
var ok bool
if f, ok = v.(float64); !ok {
if fract, ok := v.(*FractionType); ok {
f = fract.ToFloat()
} else {
i, _ := v.(int64)
f = float64(i)
}
}
return
}
func AnyInteger(v any) (i int64, ok bool) {
ok = true
switch intval := v.(type) {
case int:
i = int64(intval)
case uint8:
i = int64(intval)
case uint16:
i = int64(intval)
case uint64:
i = int64(intval)
case uint32:
i = int64(intval)
case int8:
i = int64(intval)
case int16:
i = int64(intval)
case int32:
i = int64(intval)
case int64:
i = intval
default:
ok = false
}
return
}
func ToGoInt(value any, description string) (i int, err error) {
if valueInt64, ok := value.(int64); ok {
i = int(valueInt64)
} else if valueInt, ok := value.(int); ok {
i = valueInt
} else {
err = fmt.Errorf("%s expected integer, got %s (%v)", description, TypeName(value), value)
}
return
}
kern/string.go
+23
View File
@@ -0,0 +1,23 @@
// Copyright (c) 2024-2026 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.
// string.go
package kern
import (
"fmt"
)
func IsString(v any) (ok bool) {
_, ok = v.(string)
return ok
}
func ToGoString(value any, description string) (s string, err error) {
if s, ok := value.(string); ok {
return s, nil
} else {
err = fmt.Errorf("%s expected string, got %s (%v)", description, TypeName(value), value)
}
return
}
kern/utils-unix.go
-48
View File
@@ -1,48 +0,0 @@
//go:build unix
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.
// utils-unix.go
package kern
import (
"os"
"os/user"
"path"
"strings"
)
func ExpandPath(sourcePath string) (expandedPath string, err error) {
for expandedPath = os.ExpandEnv(sourcePath); expandedPath != sourcePath; expandedPath = os.ExpandEnv(sourcePath) {
sourcePath = expandedPath
}
if strings.HasPrefix(sourcePath, "~") {
var home, userName, remainder string
slashPos := strings.IndexRune(sourcePath, '/')
if slashPos > 0 {
userName = sourcePath[1:slashPos]
remainder = sourcePath[slashPos:]
} else {
userName = sourcePath[1:]
}
if len(userName) == 0 {
home, err = os.UserHomeDir()
if err != nil {
return
}
} else {
var userInfo *user.User
userInfo, err = user.Lookup(userName)
if err != nil {
return
}
home = userInfo.HomeDir
}
expandedPath = path.Join(home, remainder)
}
return
}
kern/utils-windows.go
-18
View File
@@ -1,18 +0,0 @@
//go:build windows
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.
// utils-unix.go
package kern
import (
"os"
)
func ExpandPath(sourcePath string) (expandedPath string, err error) {
for expandedPath = os.ExpandEnv(sourcePath); expandedPath != sourcePath; expandedPath = os.ExpandEnv(sourcePath) {
sourcePath = expandedPath
}
return
}
kern/utils.go
-232
View File
@@ -1,232 +0,0 @@
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.
// utils.go
package kern
import (
"fmt"
"reflect"
)
func IsString(v any) (ok bool) {
_, ok = v.(string)
return ok
}
func IsInteger(v any) (ok bool) {
_, ok = v.(int64)
return ok
}
func IsFloat(v any) (ok bool) {
_, ok = v.(float64)
return ok
}
func IsBool(v any) (ok bool) {
_, ok = v.(bool)
return ok
}
func IsList(v any) (ok bool) {
_, ok = v.(*ListType)
return ok
}
func IsDict(v any) (ok bool) {
_, ok = v.(*DictType)
return ok
}
func IsFract(v any) (ok bool) {
_, ok = v.(*FractionType)
return ok
}
func IsRational(v any) (ok bool) {
if _, ok = v.(*FractionType); !ok {
_, ok = v.(int64)
}
return ok
}
func IsNumber(v any) (ok bool) {
return IsFloat(v) || IsInteger(v)
}
func IsNumOrFract(v any) (ok bool) {
return IsFloat(v) || IsInteger(v) || IsFraction(v)
}
func IsNumberString(v any) (ok bool) {
return IsString(v) || IsNumber(v)
}
func IsFunctor(v any) (ok bool) {
_, ok = v.(Functor)
return
}
func IsIterator(v any) (ok bool) {
_, ok = v.(Iterator)
return
}
func NumAsFloat(v any) (f float64) {
var ok bool
if f, ok = v.(float64); !ok {
if fract, ok := v.(*FractionType); ok {
f = fract.ToFloat()
} else {
i, _ := v.(int64)
f = float64(i)
}
}
return
}
func ToBool(v any) (b bool, ok bool) {
ok = true
switch x := v.(type) {
case string:
b = len(x) > 0
case float64:
b = x != 0.0
case int64:
b = x != 0
case bool:
b = x
default:
ok = false
}
return
}
func IsFunc(v any) bool {
return reflect.TypeOf(v).Kind() == reflect.Func
}
func AnyInteger(v any) (i int64, ok bool) {
ok = true
switch intval := v.(type) {
case int:
i = int64(intval)
case uint8:
i = int64(intval)
case uint16:
i = int64(intval)
case uint64:
i = int64(intval)
case uint32:
i = int64(intval)
case int8:
i = int64(intval)
case int16:
i = int64(intval)
case int32:
i = int64(intval)
case int64:
i = intval
default:
ok = false
}
return
}
func FromGenericAny(v any) (exprAny any, ok bool) {
if v != nil {
if exprAny, ok = v.(bool); ok {
return
}
if exprAny, ok = v.(string); ok {
return
}
if exprAny, ok = AnyInteger(v); ok {
return
}
if exprAny, ok = AnyFloat(v); ok {
return
}
if exprAny, ok = v.(*DictType); ok {
return
}
if exprAny, ok = v.(*ListType); ok {
return
}
}
return
}
func AnyFloat(v any) (float float64, ok bool) {
ok = true
switch floatval := v.(type) {
case float32:
float = float64(floatval)
case float64:
float = floatval
default:
ok = false
}
return
}
func CopyMap[K comparable, V any](dest, source map[K]V) map[K]V {
for k, v := range source {
dest[k] = v
}
return dest
}
// func CloneMap[K comparable, V any](source map[K]V) map[K]V {
// dest := make(map[K]V, len(source))
// return CopyMap(dest, source)
// }
func CopyFilteredMap[K comparable, V any](dest, source map[K]V, filter func(key K) (accept bool)) map[K]V {
// fmt.Printf("--- Clone with filter %p\n", filter)
if filter == nil {
return CopyMap(dest, source)
} else {
for k, v := range source {
if filter(k) {
// fmt.Printf("\tClone var %q\n", k)
dest[k] = v
}
}
}
return dest
}
func CloneFilteredMap[K comparable, V any](source map[K]V, filter func(key K) (accept bool)) map[K]V {
dest := make(map[K]V, len(source))
return CopyFilteredMap(dest, source, filter)
}
func ToGoInt(value any, description string) (i int, err error) {
if valueInt64, ok := value.(int64); ok {
i = int(valueInt64)
} else if valueInt, ok := value.(int); ok {
i = valueInt
} else {
err = fmt.Errorf("%s expected integer, got %s (%v)", description, TypeName(value), value)
}
return
}
func ToGoString(value any, description string) (s string, err error) {
if s, ok := value.(string); ok {
return s, nil
} else {
err = fmt.Errorf("%s expected string, got %s (%v)", description, TypeName(value), value)
}
return
}
func ForAll[T, V any](ts []T, fn func(T) V) []V {
result := make([]V, len(ts))
for i, t := range ts {
result[i] = fn(t)
}
return result
}