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fn_nullif.go
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/
fn_nullif.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the MIT License.
// This product includes software developed at Guance Cloud (https://www.guance.com/).
// Copyright 2021-present Guance, Inc.
package funcs
import (
"fmt"
"reflect"
"github.com/GuanceCloud/platypus/pkg/ast"
"github.com/GuanceCloud/platypus/pkg/engine/runtime"
"github.com/GuanceCloud/platypus/pkg/errchain"
)
func NullIfChecking(ctx *runtime.Context, funcExpr *ast.CallExpr) *errchain.PlError {
if len(funcExpr.Param) != 2 {
return runtime.NewRunError(ctx, fmt.Sprintf("func %s expected 2 args", funcExpr.Name),
funcExpr.NamePos)
}
if _, err := getKeyName(funcExpr.Param[0]); err != nil {
return runtime.NewRunError(ctx, err.Error(), funcExpr.Param[0].StartPos())
}
return nil
}
func NullIf(ctx *runtime.Context, funcExpr *ast.CallExpr) *errchain.PlError {
if len(funcExpr.Param) != 2 {
return runtime.NewRunError(ctx, fmt.Sprintf(
"func %s expected 2 args", funcExpr.Name), funcExpr.NamePos)
}
key, err := getKeyName(funcExpr.Param[0])
if err != nil {
return runtime.NewRunError(ctx, err.Error(), funcExpr.Param[0].StartPos())
}
cont, err := ctx.GetKey(key)
if err != nil {
// l.Debugf("key `%v' not exist, ignored", key)
return nil //nolint:nilerr
}
var val interface{}
switch funcExpr.Param[1].NodeType { //nolint:exhaustive
case ast.TypeStringLiteral, ast.TypeFloatLiteral, ast.TypeIntegerLiteral,
ast.TypeBoolLiteral, ast.TypeNilLiteral:
if v, _, err := runtime.RunStmt(ctx, funcExpr.Param[1]); err == nil {
val = v
}
}
// todo key string
if reflect.DeepEqual(cont.Value, val) {
deletePtKey(ctx.InData(), key)
}
return nil
}