.TH "Printexc.Slot" 3o source: 2019-01-25 OCamldoc "OCaml library"
.SH NAME
Printexc.Slot \- no description
.SH Module
Module   Printexc.Slot
.SH Documentation
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Module
.BI "Slot"
 : 
.B sig  end

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.B "Since"
4.02.0

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.I type t 
= 
.B Printexc.backtrace_slot

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.I val is_raise 
: 
.B t -> bool
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.B is_raise slot
is 
.B true
when 
.B slot
refers to a raising
point in the code, and 
.B false
when it comes from a simple
function call\&.

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.B "Since"
4.02

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.I val is_inline 
: 
.B t -> bool
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.B is_inline slot
is 
.B true
when 
.B slot
refers to a call
that got inlined by the compiler, and 
.B false
when it comes from
any other context\&.

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.B "Since"
4.04.0

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.I val location 
: 
.B t -> Printexc.location option
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.B location slot
returns the location information of the slot,
if available, and 
.B None
otherwise\&.
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Some possible reasons for failing to return a location are as follow:
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\-the slot corresponds to a compiler\-inserted raise
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\-the slot corresponds to a part of the program that has not been
compiled with debug information (
.B \-g
)


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.B "Since"
4.02

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.I val format 
: 
.B int -> t -> string option
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.B format pos slot
returns the string representation of 
.B slot
as
.B raw_backtrace_to_string
would format it, assuming it is the
.B pos
\-th element of the backtrace: the 
.B 0
\-th element is
pretty\-printed differently than the others\&.
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Whole\-backtrace printing functions also skip some uninformative
slots; in that case, 
.B format pos slot
returns 
.B None
\&.

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.B "Since"
4.02

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