▼ |  | Errortrace: Debugging and Profiling

1 | Quick Instructions
2 | Installing Errortrace
3 | Using Errortrace
4 | Errortrace Library
5 | Re-using Errortrace Stack Tracing
6 | Errortrace Key

On this page:

errortrace-compile-handler
make-errortrace-compile-handler
errortrace-error-display-handler
errortrace-annotate
annotate-top

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### 4`` Errortrace Library

( require errortrace/errortrace-lib )

The errortrace/errortrace-lib module exports all of the exports of errortrace, plus a few more. It does not install any handlers.

The additional exports are as follows:

( errortrace-compile-handler |  | stx |
|  | immediate-eval?) |

→ compiled-expression?
stx : any/c
immediate-eval? : any/c

Compiles stx using the compilation handler that was active when the errortrace/errortrace-lib module was executed, but first instruments the code for Errortrace information. The code is instrumented only if
( namespace-module-registry ( current-namespace ))
is the same as when the errortrace/errortrace-lib module was executed. This procedure is suitable for use as a compilation handler via current-compile.

( make-errortrace-compile-handler )
→ ( -> any/c any/c compiled-expression)

Produces a compile handler that is like errortrace-compile-handler, except that the code that the it produces is instrumented if the value of
( namespace-module-registry ( current-namespace ))
is the same as when the original thunk is invoked.

In addition, when the thunk is invoked, it uses namespace-attach-module to attach the errortrace/errortrace-key module and the '#%kernel module to the current-namespace.

( errortrace-error-display-handler |  | string |  |  |  |
|  | exn) |  | → |  | void?

string : string?
exn : exn?

Displays information about the exception; this procedure is suitable for use as an error display handler.

( errortrace-annotate stx) → any/c
stx : any/c

Macro-expands and instruments the given top-level form. If the form is a module named errortrace-key, no instrumentation is applied. This annotation function is used by errortrace-compile-handler.

( annotate-top stx phase-level) → any/c
stx : any/c
phase-level : exact-integer?

Like errortrace-annotate, but given an explicit phase level for stx; ( namespace-base-phase ) is typically the right value for the phase-level argument.

Unlike errortrace-annotate, there no special case for a module named errortrace-key. Also, if stx is a module declaration, it is not enriched with imports to explicitly load Errortrace run-time support.

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