system/exceptions

Exception and effect types used in Nim code.

Types

AccessViolationDefect = object of Defect

Raised for invalid memory access errors Source Edit

AccessViolationError {....deprecated: "See corresponding Defect".} = AccessViolationDefect

Deprecated: See corresponding Defect

Source Edit

ArithmeticDefect = object of Defect

Raised if any kind of arithmetic error occurred. Source Edit

ArithmeticError {....deprecated: "See corresponding Defect".} = ArithmeticDefect

Deprecated: See corresponding Defect

Source Edit

AssertionDefect = object of Defect

Raised when assertion is proved wrong.

Usually the result of using the assert() template.

Source Edit

AssertionError {....deprecated: "See corresponding Defect".} = AssertionDefect

Deprecated: See corresponding Defect

Source Edit

DeadThreadDefect = object of Defect

Raised if it is attempted to send a message to a dead thread. Source Edit

DeadThreadError {....deprecated: "See corresponding Defect".} = DeadThreadDefect

Deprecated: See corresponding Defect

Source Edit

DivByZeroDefect = object of ArithmeticDefect

Raised for runtime integer divide-by-zero errors. Source Edit

DivByZeroError {....deprecated: "See corresponding Defect".} = DivByZeroDefect

Deprecated: See corresponding Defect

Source Edit

EOFError = object of IOError

Raised if an IO "end of file" error occurred. Source Edit

ExecIOEffect = object of IOEffect

Effect describing an executing IO operation. Source Edit

FieldDefect = object of Defect

Raised if a record field is not accessible because its discriminant's value does not fit. Source Edit

FieldError {....deprecated: "See corresponding Defect".} = FieldDefect

Deprecated: See corresponding Defect

Source Edit

FloatDivByZeroDefect = object of FloatingPointDefect

Raised by division by zero.

Divisor is zero and dividend is a finite nonzero number.

Source Edit

FloatDivByZeroError {....deprecated: "See corresponding Defect".} = FloatDivByZeroDefect

Deprecated: See corresponding Defect

Source Edit

FloatInexactDefect = object of FloatingPointDefect

Raised for inexact results.

The operation produced a result that cannot be represented with infinite precision -- for example: 2.0 / 3.0, log(1.1)

Note: Nim currently does not detect these!

Source Edit

FloatInexactError {....deprecated: "See corresponding Defect".} = FloatInexactDefect

Deprecated: See corresponding Defect

Source Edit

FloatingPointDefect = object of Defect

Base class for floating point exceptions. Source Edit

FloatingPointError {....deprecated: "See corresponding Defect".} = FloatingPointDefect

Deprecated: See corresponding Defect

Source Edit

FloatInvalidOpDefect = object of FloatingPointDefect

Raised by invalid operations according to IEEE.

Raised by 0.0/0.0, for example.

Source Edit

FloatInvalidOpError {....deprecated: "See corresponding Defect".} = FloatInvalidOpDefect

Deprecated: See corresponding Defect

Source Edit

FloatOverflowDefect = object of FloatingPointDefect

Raised for overflows.

The operation produced a result that exceeds the range of the exponent.

Source Edit

FloatOverflowError {....deprecated: "See corresponding Defect".} = FloatOverflowDefect

Deprecated: See corresponding Defect

Source Edit

FloatUnderflowDefect = object of FloatingPointDefect

Raised for underflows.

The operation produced a result that is too small to be represented as a normal number.

Source Edit

FloatUnderflowError {....deprecated: "See corresponding Defect".} = FloatUnderflowDefect

Deprecated: See corresponding Defect

Source Edit

IndexDefect = object of Defect

Raised if an array index is out of bounds. Source Edit

IndexError {....deprecated: "See corresponding Defect".} = IndexDefect

Deprecated: See corresponding Defect

Source Edit

IOEffect = object of RootEffect

IO effect. Source Edit

IOError = object of CatchableError

Raised if an IO error occurred. Source Edit

KeyError = object of ValueError

Raised if a key cannot be found in a table.

Mostly used by the tables module, it can also be raised by other collection modules like sets or strtabs.

Source Edit

LibraryError = object of OSError

Raised if a dynamic library could not be loaded. Source Edit

NilAccessDefect = object of Defect

Raised on dereferences of nil pointers.

This is only raised if the segfaults module was imported!

Source Edit

NilAccessError {....deprecated: "See corresponding Defect".} = NilAccessDefect

Deprecated: See corresponding Defect

Source Edit

ObjectAssignmentDefect = object of Defect

Raised if an object gets assigned to its parent's object. Source Edit

ObjectAssignmentError {....deprecated: "See corresponding Defect".} = ObjectAssignmentDefect

Deprecated: See corresponding Defect

Source Edit

ObjectConversionDefect = object of Defect

Raised if an object is converted to an incompatible object type. You can use of operator to check if conversion will succeed. Source Edit

ObjectConversionError {....deprecated: "See corresponding Defect".} = ObjectConversionDefect

Deprecated: See corresponding Defect

Source Edit

OSError = object of CatchableError
  errorCode*: int32          ## OS-defined error code describing this error.

Raised if an operating system service failed. Source Edit

OutOfMemDefect = object of Defect

Raised for unsuccessful attempts to allocate memory. Source Edit

OutOfMemError {....deprecated: "See corresponding Defect".} = OutOfMemDefect

Deprecated: See corresponding Defect

Source Edit

OverflowDefect = object of ArithmeticDefect

Raised for runtime integer overflows.

This happens for calculations whose results are too large to fit in the provided bits.

Source Edit

OverflowError {....deprecated: "See corresponding Defect".} = OverflowDefect

Deprecated: See corresponding Defect

Source Edit

RangeDefect = object of Defect

Raised if a range check error occurred. Source Edit

RangeError {....deprecated: "See corresponding Defect".} = RangeDefect

Deprecated: See corresponding Defect

Source Edit

ReadIOEffect = object of IOEffect

Effect describing a read IO operation. Source Edit

ReraiseDefect = object of Defect

Raised if there is no exception to reraise. Source Edit

ReraiseError {....deprecated: "See corresponding Defect".} = ReraiseDefect

Deprecated: See corresponding Defect

Source Edit

ResourceExhaustedError = object of CatchableError

Raised if a resource request could not be fulfilled. Source Edit

StackOverflowDefect = object of Defect

Raised if the hardware stack used for subroutine calls overflowed. Source Edit

StackOverflowError {....deprecated: "See corresponding Defect".} = StackOverflowDefect

Deprecated: See corresponding Defect

Source Edit

TimeEffect = object of RootEffect

Time effect. Source Edit

ValueError = object of CatchableError

Raised for string and object conversion errors. Source Edit

WriteIOEffect = object of IOEffect

Effect describing a write IO operation. Source Edit