preflect

Documentation

Overview

Package preflect obtains underlying type using reflection

Index

• Constants
• func FuncName(funcOrMethod any) (cL *pruntime.CodeLocation, err error)
• func IntValue(value any) (u64 uint64, i64 int64, hasValue, isSigned, isPointer bool)
• func PredeclaredType(value any) (s string)

Constants

const (
	Nil = "nil"
)

Functions

func FuncName

func FuncName(funcOrMethod any) (cL *pruntime.CodeLocation, err error)

FuncName returns information on a function value

• funcOrMethod: non-nil function value such as:
• — a top-level function: “func main() {”
• — a method: “errors.New("").Error”
• — an anonymous function: “var f = func() {}” returned like “SomeFunc.func1”
• cL is a function-describing structure of basic types only
• — pruntime.CodeLocation.FuncIdentifier returns the function name identifier, a single word
• error is returned if:
• — funcOrMethod is nil or not a function value
• — function value retrieval failed in runtime

func IntValue

func IntValue(value any) (u64 uint64, i64 int64, hasValue, isSigned, isPointer bool)

IntValue returns the integer value of value

• hasValue is true and u64 is initialized for any integer, pointer or nil
• for signed integer types, isSigned is true and i64 has value
• isPointer indicates that u64 holds a pointer value
• nil returns: u64 = 0, hasValue true, isPointer true, isSigned false
• superseded by non-reflection version github.com/haraldrudell/parl/ints.IntProperties

func PredeclaredType

func PredeclaredType(value any) (s string)

PredeclaredType returns a string describing the underlying type of value

• examples: "bool" "uint8" "int(64)"
• no named types or type aliases