+
Point of view
All features
expanded class EXCEPTIONS
Summary
Facilities for adapting the exception handling mechanism.
Direct parents
Insert list: ANY
Known children
Insert list: COMPLEX_GENERAL
Overview
Features
Various exceptions codes:
{ANY}
{ANY}
Status report:
{ANY}
Basic operations:
{ANY}
  • die (code: INTEGER_32)
    Terminate execution with exit status code, without triggering an exception.
  • raise (name: STRING)
    Raise a developer exception of name name.
  • throw (a_exception: EXCEPTION)
Non-Standard Extensions:
{ANY}
{}
Check_instruction: INTEGER_32
is 1
constant attribute
{ANY}
Exception code for violated check.
Class_invariant: INTEGER_32
is 2
constant attribute
{ANY}
Exception code for violated class invariant.
Developer_exception: INTEGER_32
is 3
constant attribute
{ANY}
Exception code for developer exception.
See also: raise, throw
Incorrect_inspect_value: INTEGER_32
is 4
constant attribute
{ANY}
Exception code for inspect statement.
This exception occurs when Void is passed as the expression to inspect ("inspect on STRING only). This exception also occurs when the inspected value selects no branch (when the keyword "else" not used, one "when" branch _must_ be selected). Some value which is not one of the inspect constants, if there is no Else_part _
Loop_invariant: INTEGER_32
is 5
constant attribute
{ANY}
Exception code for violated loop invariant
Loop_variant: INTEGER_32
is 6
constant attribute
{ANY}
Exception code for non-decreased loop variant
No_more_memory: INTEGER_32
is 7
constant attribute
{ANY}
Exception code for failed memory allocation
Postcondition: INTEGER_32
is 8
constant attribute
{ANY}
Exception code for violated postcondition.
Precondition: INTEGER_32
is 9
constant attribute
{ANY}
Exception code for violated precondition.
Routine_failure: INTEGER_32
is 10
constant attribute
{ANY}
Exception code for failed routine.
Os_signal: INTEGER_32
is 11
constant attribute
{ANY}
Exception code for a signal received from the OS.
Void_attached_to_expanded: INTEGER_32
is 12
constant attribute
{ANY}
Exception code for attachment of Void value to expanded entity.
Void_call_target: INTEGER_32
is 13
constant attribute
{ANY}
Exception code for feature applied to Void reference
System_level_type_error: INTEGER_32
is 14
constant attribute
{ANY}
Exception code for the system-level type error (this kind of error mostly arise with covariant redefinition).
exception_name: STRING
effective function
{ANY}
name_of_exception (a_exception: INTEGER_32): STRING
effective function
{ANY}
developer_exception: EXCEPTION
effective function
{ANY}
The last developer-thrown exception.
require
developer_exception_name: STRING
effective function
{ANY}
Name of last developer-raised exception.
require
is_developer_exception: BOOLEAN
effective function
{ANY}
Is the last exception originally due to a developer exception?
is_developer_named_exception: BOOLEAN
effective function
{ANY}
Is the last exception originally due to a developer exception?
is_developer_exception_of_name (name: STRING): BOOLEAN
effective function
{ANY}
Is the last exception originally due to a developer exception of name name?
assertion_violation: BOOLEAN
effective function
{ANY}
Is last exception originally due to a violated assertion or non-decreasing variant?
exception: INTEGER_32
{ANY}
Code of last exception that occurred.
is_signal: BOOLEAN
effective function
{ANY}
Is last exception originally due to an external event (operating system signal) ?
die (code: INTEGER_32)
effective procedure
{ANY}
Terminate execution with exit status code, without triggering an exception.
raise (name: STRING)
effective procedure
{ANY}
Raise a developer exception of name name.
require
  • name /= Void
throw (a_exception: EXCEPTION)
effective procedure
{ANY}
require
  • a_exception /= Void
signal_number: INTEGER_32
{ANY}
Signal Number received from OS.
 Zero if exception is not an OS signal.
named_exception: NAMED_EXCEPTION
once function
{}
developer_exception_memory: REFERENCE[EXCEPTION]
once function
{}
raise_exception (code: INTEGER_32)
{}