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84 lines
2 KiB
C
84 lines
2 KiB
C
/* impl.c.assert: ASSERTION IMPLEMENTATION
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*
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* $HopeName: MMsrc!assert.c(trunk.8) $
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*
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* This source provides the AssertFail function which is
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* invoked by the assertion macros (see impl.h.assert).
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* It also provides for user-installed assertion failure handlers.
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*
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*
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* NOTES
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*
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* .note.assert-buffer: The Assertion Buffer is not used. In the future
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* we probably ought to use it. (see .buffer.* below)
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*/
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#include "mpm.h"
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/* CheckLevel -- Control check level
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* This controls the behaviour of Check methods unless MPS_HOT_RED
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* is defined, when it is effectively stuck at "CheckNONE".
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* See impl.h.mpm for extern declaration.
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*/
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Word CheckLevel = CheckSHALLOW;
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/* Assertion buffer
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*
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* .buffer.purpose: the assertion buffer serves two purposes:
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* .buffer.purpose.modify: assertion strings are picked apart and
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* modified before being passed to assertion handlers, this
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* buffer is used to do that.
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* .buffer.purpose.store: Debuggers, post-mortem dumps, etc, can retrieve the
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* assertion text even if for some reason printing the text out failed.
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* [note this is not used, see .note.buffer]
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*/
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char AssertBuffer[ASSERT_BUFFER_SIZE];
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static void AssertLib(const char *cond, const char *id,
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const char *file, unsigned line)
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{
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WriteF(mps_lib_stderr,
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"\n"
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"MPS ASSERTION FAILURE\n"
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"\n"
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"Id: $S\n", id,
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"File: $S\n", file,
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"Line: $U\n", (WriteFU)line,
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"Condition: $S\n", cond,
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"\n",
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NULL);
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mps_lib_abort();
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}
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static AssertHandler handler = AssertLib;
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AssertHandler AssertDefault(void)
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{
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return AssertLib;
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}
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AssertHandler AssertInstall(AssertHandler new)
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{
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AssertHandler prev = handler;
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handler = new;
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return prev;
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}
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/* AssertFail -- fail an assertion
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*
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* This function is called when an ASSERT macro fails a test. It
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* calls the installed assertion handler, if it is not NULL. If
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* handler returns the progam continues.
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*/
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void AssertFail1(const char *s)
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{
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if(handler != NULL)
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(*handler)(s, "", "", 0);
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}
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