github.com/MontFerret/ferret@v0.18.0/pkg/stdlib/objects/has.go (about)

     1  package objects
     2  
     3  import (
     4  	"context"
     5  
     6  	"github.com/MontFerret/ferret/pkg/runtime/core"
     7  	"github.com/MontFerret/ferret/pkg/runtime/values"
     8  	"github.com/MontFerret/ferret/pkg/runtime/values/types"
     9  )
    10  
    11  // HAS returns the value stored by the given key.
    12  // @param {String} key - The key name string.
    13  // @return {Boolean} - True if the key exists else false.
    14  func Has(_ context.Context, args ...core.Value) (core.Value, error) {
    15  	err := core.ValidateArgs(args, 2, 2)
    16  
    17  	if err != nil {
    18  		return values.None, err
    19  	}
    20  
    21  	err = core.ValidateType(args[0], types.Object)
    22  
    23  	if err != nil {
    24  		return values.None, err
    25  	}
    26  
    27  	err = core.ValidateType(args[1], types.String)
    28  
    29  	if err != nil {
    30  		return values.None, err
    31  	}
    32  
    33  	obj := args[0].(*values.Object)
    34  	keyName := args[1].(values.String)
    35  
    36  	_, has := obj.Get(keyName)
    37  
    38  	return has, nil
    39  }