| 1 | /****************************************************************** |
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| 2 | * |
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| 3 | * File: MPT_Error.c |
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| 4 | * Purpose: Routines related to Error handling of MPT |
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| 5 | * Author: Olaf Bachman (obachman@mathematik.uni-kl.de) |
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| 6 | * Created: 12/96 |
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| 7 | * |
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| 8 | * Change History (most recent first): |
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| 9 | * |
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| 10 | ******************************************************************/ |
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| 11 | |
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| 12 | #include "MPT.h" |
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| 13 | |
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| 14 | char *MPT_errlist[] = |
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| 15 | { |
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| 16 | "MPT: MPT_Failure", |
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| 17 | "MPT: MPT_Success", |
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| 18 | "MPT: MPT_MP_Failure", |
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| 19 | "MPT: Unknown Type", |
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| 20 | "MPT: Can't allocate memory", |
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| 21 | "MPT: MPT tree has wrong syntax/structure", |
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| 22 | "MPT: MP node of unknown type", |
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| 23 | "MPT: ProtoD:Pointer without Arg", |
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| 24 | "MPT: Union Discriminator too large (out of permissible range)", |
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| 25 | "MPT: An internal assumption has been violated", |
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| 26 | "MPT: External application did not read data from link", |
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| 27 | "MPT: Wrong ApInt format requested" |
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| 28 | }; |
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| 29 | |
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| 30 | |
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| 31 | MPT_Status_t MPT_errno = MPT_Success; |
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| 32 | |
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| 33 | MPT_Status_t MPT_CheckError() |
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| 34 | { |
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| 35 | MPT_Status_t status = MPT_errno; |
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| 36 | MPT_ClearError(); |
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| 37 | return status; |
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| 38 | } |
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| 39 | |
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| 40 | char* MPT_ErrorStr(MPT_Status_t error) |
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| 41 | { |
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| 42 | if (error < MPT_MaxError && error > 0) |
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| 43 | return MPT_errlist[error]; |
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| 44 | else |
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| 45 | return "Unknown MPT error number"; |
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| 46 | } |
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| 47 | |
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| 48 | char* MPT_LinkErrorStr(MP_Link_pt link, MPT_Status_t error) |
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| 49 | { |
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| 50 | if (error == MPT_MP_Failure && |
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| 51 | link != NULL && link->errno >= 0 && link->errno != MP_Success) |
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| 52 | return MP_ErrorStr(link); |
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| 53 | |
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| 54 | if (error >= 0 && error < MPT_MaxError) |
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| 55 | return MPT_errlist[error]; |
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| 56 | |
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| 57 | return "MPT: Unknown Error"; |
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| 58 | } |
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| 59 | |
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| 60 | #ifdef MPT_DEBUG |
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| 61 | MPT_Status_t MPT_SetError(MPT_Status_t mpt_error) |
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| 62 | { |
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| 63 | return MPT_errno = mpt_error; |
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| 64 | } |
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| 65 | |
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| 66 | MPT_Status_t MPT_ClearError() |
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| 67 | { |
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| 68 | return MPT_errno = MPT_Success; |
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| 69 | } |
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| 70 | |
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| 71 | /* when debugging is turned on, this function gets called, whenever |
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| 72 | MPT_Assume is used */ |
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| 73 | void MPT_Assume(MP_Boolean_t ass) |
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| 74 | { |
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| 75 | if (!ass) |
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| 76 | { |
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| 77 | MPT_SetError(MPT_ViolatedAssumption); |
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| 78 | } |
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| 79 | } |
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| 80 | #endif |
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| 81 | |
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| 82 | |
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