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value.go
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value.go
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package resolver
import (
proto "github.com/rgraphql/rgraphql"
)
// Value is a primitive value emitted by a resolver.
type Value struct {
Context *Context
Value *proto.RGQLPrimitive
Error error
}
// GetPrimValueFuncName maps the primitive type to a value builder.
// String -> BuildStringValue
// Int -> BuildIntValue
// Bool -> BuildBoolValue, etc...
// Returns "" if undefined.
func GetPrimValueFuncName(primKind proto.RGQLPrimitive_Kind) string {
switch primKind {
case proto.RGQLPrimitive_PRIMITIVE_KIND_INT:
return "BuildIntValue"
case proto.RGQLPrimitive_PRIMITIVE_KIND_BOOL:
return "BuildBoolValue"
case proto.RGQLPrimitive_PRIMITIVE_KIND_STRING:
return "BuildStringValue"
case proto.RGQLPrimitive_PRIMITIVE_KIND_FLOAT:
return "BuildFloatValue"
case proto.RGQLPrimitive_PRIMITIVE_KIND_NULL:
return "BuildNullValue"
default:
return ""
}
}
// BuildErrorValue builds a resolver value with an error.
func BuildErrorValue(err error) *Value {
return &Value{
Error: err,
}
}
// BuildStringValue returns a string primitive value.
func BuildStringValue(val string) *Value {
return &Value{
Value: &proto.RGQLPrimitive{
Kind: proto.RGQLPrimitive_PRIMITIVE_KIND_STRING,
StringValue: val,
},
}
}
// BuildIntValue returns a int primitive value.
func BuildIntValue(val int32) *Value {
return &Value{
Value: &proto.RGQLPrimitive{
Kind: proto.RGQLPrimitive_PRIMITIVE_KIND_INT,
IntValue: val,
},
}
}
// BuildFloatValue returns a float primitive value.
func BuildFloatValue(val float64) *Value {
return &Value{
Value: &proto.RGQLPrimitive{
Kind: proto.RGQLPrimitive_PRIMITIVE_KIND_FLOAT,
FloatValue: val,
},
}
}
// BuildBoolValue returns a boolean primitive value.
func BuildBoolValue(val bool) *Value {
return &Value{
Value: &proto.RGQLPrimitive{
Kind: proto.RGQLPrimitive_PRIMITIVE_KIND_BOOL,
BoolValue: val,
},
}
}
// BuildNullValue returns the null primitive value.
func BuildNullValue() *Value {
return &Value{
Value: &proto.RGQLPrimitive{
Kind: proto.RGQLPrimitive_PRIMITIVE_KIND_NULL,
},
}
}