Function NewInvalidFunctionUsageError

postgres/parser/sem/tree/type_check.go:722–737

NewInvalidFunctionUsageError creates a rejection for a special function.

(class FunctionClass, context string)

// NewInvalidFunctionUsageError creates a rejection for a special function.
func NewInvalidFunctionUsageError(class FunctionClass, context string) error {
	var cat string
	var code pgcode.Code
	switch class {
	case AggregateClass:
		cat = "aggregate"
		code = pgcode.Grouping
	case WindowClass:
		cat = "window"
		code = pgcode.Windowing
	case GeneratorClass:
		cat = "generator"
		code = pgcode.FeatureNotSupported
	}
	return pgerror.Newf(code, "%s functions are not allowed in %s", cat, context)
}

// checkFunctionUsage checks whether a given built-in function is
// allowed in the current context.