#ifndef cmData_h #define cmData_h #ifdef __cplusplus extern "C" { #endif enum { kOkDtRC = cmOkRC, kCvtErrDtRC, kVarArgErrDtRC, kEolDtRC }; enum { kInvalidDtChar = 0xff, kInvalidDtUChar = 0xff, kInvalidDtShort = 0xffff, kInvalidDtUShort = 0xffff, kInvalidDtInt = 0xffffffff, kInvalidDtUInt = 0xffffffff, kInvalidDtLong = 0xffffffff, kInvalidDtULong = 0xffffffff, }; typedef enum { kInvalidDtId, kMinValDtId, kNullDtId = kMinValDtId, kUCharDtId, kCharDtId, kUShortDtId, kShortDtId, kUIntDtId, kIntDtId, kULongDtId, kLongDtId, kFloatDtId, kDoubleDtId, kStrDtId, kConstStrDtId, kMaxValDtId = kConstStrDtId, kMinPtrDtId, kUCharPtrDtId = kMinPtrDtId, // cnt=array element count kCharPtrDtId, kUShortPtrDtId, kShortPtrDtId, kUIntPtrDtId, kIntPtrDtId, kULongPtrDtId, kLongPtrDtId, kFloatPtrDtId, kDoublePtrDtId, kVoidPtrDtId, kMaxPtrDtId = kVoidPtrDtId, kMinStructDtId, kListDtId = kMinStructDtId, // children nodes are array elements, cnt=child count kPairDtId, // key/value pairs, cnt=2, first child is key, second is value kRecordDtId, // children nodes are pairs, cnt=pair count kMaxStructDtId } cmDataFmtId_t; enum { kDynObjDtFl = 0x01, // object was dynamically allocated kDynPtrDtFl = 0x02 // ptr array was dynamically allocated }; typedef struct cmData_str { cmDataFmtId_t tid; // data format id unsigned flags; // struct cmData_str* parent; // this childs parent struct cmData_str* sibling; // this childs left sibling unsigned cnt; // array ele count union { char c; unsigned char uc; short s; unsigned short us; int i; unsigned int ui; long l; unsigned long ul; float f; double d; cmChar_t* z; const cmChar_t* cz; void* vp; char* cp; unsigned char* ucp; short* sp; unsigned short* usp; int* ip; unsigned int* uip; long* lp; unsigned long* ulp; float* fp; double* dp; struct cmData_str* child; // first child (array,record,pair) } u; } cmData_t; typedef unsigned cmDtRC_t; extern cmData_t cmDataNull; bool cmDataIsValue( const cmData_t* p ); bool cmDataIsPtr( const cmData_t* p ); bool cmDataIsStruct( const cmData_t* p ); /* TODO: 0) Figure out a error handling scheme that does not rely on a global errno. This is not useful in multi-thread environments. It might be ok to go with an 'all errors are fatal' model (except in the var-args functions). Consider the use of a context object for use with functions that can have runtime errors or need to allocate memory. 1) Implement the canConvert and willTruncate functions. 2) Make a set of cmDataAllocXXXPtr() functions which take a flag indicating whether or not to dynamically allocate the array space. This will allow dynamic allocattion to occur at runtime. Make var args functions for list and record objects which also take this flag. Where ever a function may be implemented using static/dynamic allocation this flag should be present. (e.g. string allocation for pair labels) This choice is common enough that it may be worth suffixing function names with a capital letter to be clear what the functions memory policy is. 3) Come up with a var-args format which allows a hierchy of records to be defined in one line. 4) Implement the serialization functions. 5) Implement an ascii string/parse format for writing/reading. 6) Implement fast lookup of record fields. 7) Allow for user defined types. For example a 'matrix' data type. This might be as simple as adding an extra 'user_tid' field to cmData_t. 8) Implement type specific cmDataGetRecordValueXXX() functions. 9) Implement cmDataIsEqual(), cmDataIsLtE(), ... */ bool canConvertType( cmDataFmtId_t srcId, cmDataFmtId_t dstId ); bool willTruncate( cmDataFmtId_t srcId, cmDataFmtId_t dstId ); bool canConvertObj( const cmData_t* srcObj, cmData_t* dstObj ); bool willTruncateObj(const cmData_t* srcObj, cmData_t* dstObj ); // Get the value of an object without conversion. // The data type id must match the return type or the // conversion must be an automatic C conversion. char cmDataChar( const cmData_t* p ); unsigned char cmDataUChar( const cmData_t* p ); short cmDataShort( const cmData_t* p ); unsigned short cmDataUShort( const cmData_t* p ); int cmDataInt( const cmData_t* p ); unsigned int cmDataUInt( const cmData_t* p ); long cmDataLong( const cmData_t* p ); unsigned long cmDataULong( const cmData_t* p ); float cmDataFloat( const cmData_t* p ); double cmDataDouble( const cmData_t* p ); cmChar_t* cmDataStr( const cmData_t* p ); const cmChar_t* cmDataConstStr( const cmData_t* p ); void* cmDataVoidPtr( const cmData_t* p ); char* cmDataCharPtr( const cmData_t* p ); unsigned char* cmDataUCharPtr( const cmData_t* p ); short* cmDataShortPtr( const cmData_t* p ); unsigned short* cmDataUShortPtr( const cmData_t* p ); int* cmDataIntPtr( const cmData_t* p ); unsigned int* cmDataUIntPtr( const cmData_t* p ); long* cmDataLongPtr( const cmData_t* p ); unsigned long* cmDataULongPtr( const cmData_t* p ); float* cmDataFloatPtr( const cmData_t* p ); double* cmDataDoublePtr( const cmData_t* p ); // Get the value of an object with conversion. char cmDataGetChar( const cmData_t* p ); unsigned char cmDataGetUChar( const cmData_t* p ); short cmDataGetShort( const cmData_t* p ); unsigned short cmDataGetUShort( const cmData_t* p ); int cmDataGetInt( const cmData_t* p ); unsigned int cmDataGetUInt( const cmData_t* p ); long cmDataGetLong( const cmData_t* p ); unsigned long cmDataGetULong( const cmData_t* p ); float cmDataGetFloat( const cmData_t* p ); double cmDataGetDouble( const cmData_t* p ); cmChar_t* cmDataGetStr( const cmData_t* p ); const cmChar_t* cmDataGetConstStr( const cmData_t* p ); void* cmDataGetVoidPtr( const cmData_t* p ); char* cmDataGetCharPtr( const cmData_t* p ); unsigned char* cmDataGetUCharPtr( const cmData_t* p ); short* cmDataGetShortPtr( const cmData_t* p ); unsigned short* cmDataGetUShortPtr( const cmData_t* p ); int* cmDataGetIntPtr( const cmData_t* p ); unsigned int* cmDataGetUIntPtr( const cmData_t* p ); long* cmDataGetLongPtr( const cmData_t* p ); unsigned long* cmDataGetULongPtr( const cmData_t* p ); float* cmDataGetFloatPtr( const cmData_t* p ); double* cmDataGetDoublePtr( const cmData_t* p ); // Set the value of an existing scalar data object. cmData_t* cmDataSetNull( cmData_t* p ); cmData_t* cmDataSetChar( cmData_t* p, char v ); cmData_t* cmDataSetUChar( cmData_t* p, unsigned char v ); cmData_t* cmDataSetShort( cmData_t* p, short v ); cmData_t* cmDataSetUShort( cmData_t* p, unsigned short v ); cmData_t* cmDataSetInt( cmData_t* p, int v ); cmData_t* cmDataSetUInt( cmData_t* p, unsigned int v ); cmData_t* cmDataSetLong( cmData_t* p, long v ); cmData_t* cmDataSetULong( cmData_t* p, unsigned long v ); cmData_t* cmDataSetFloat( cmData_t* p, float v ); cmData_t* cmDataSetDouble( cmData_t* p, double v ); cmData_t* cmDataSetStr( cmData_t* p, cmChar_t* s ); cmData_t* cmDataSetConstStr( cmData_t* p, const cmChar_t* s ); // Set the value of an existing data object to an external array. // 'vp' is assigned as the data space for the object and therefore must remain // valid for the life of the object. cmData_t* cmDataSetVoidPtr( cmData_t* p, void* vp, unsigned cnt ); cmData_t* cmDataSetCharPtr( cmData_t* p, char* vp, unsigned cnt ); cmData_t* cmDataSetUCharPtr( cmData_t* p, unsigned char* vp, unsigned cnt ); cmData_t* cmDataSetShortPtr( cmData_t* p, short* vp, unsigned cnt ); cmData_t* cmDataSetUShortPtr( cmData_t* p, unsigned short* vp, unsigned cnt ); cmData_t* cmDataSetIntPtr( cmData_t* p, int* vp, unsigned cnt ); cmData_t* cmDataSetUIntPtr( cmData_t* p, unsigned int* vp, unsigned cnt ); cmData_t* cmDataSetLongPtr( cmData_t* p, long* vp, unsigned cnt ); cmData_t* cmDataSetULongPtr( cmData_t* p, unsigned long* vp, unsigned cnt ); cmData_t* cmDataSetFloatPtr( cmData_t* p, float* vp, unsigned cnt ); cmData_t* cmDataSetDoublePtr( cmData_t* p, double* vp, unsigned cnt ); // Set the value of an existing array based data object. // Dynamically allocate the internal array and copy the array data into it. cmData_t* cmDataSetStrAlloc( cmData_t* p, const cmChar_t* s ); cmData_t* cmDataSetConstStrAlloc( cmData_t* p, const cmChar_t* s ); cmData_t* cmDataSetVoidAllocPtr( cmData_t* p, const void* vp, unsigned cnt ); cmData_t* cmDataSetCharAllocPtr( cmData_t* p, const char* vp, unsigned cnt ); cmData_t* cmDataSetUCharAllocPtr( cmData_t* p, const unsigned char* vp, unsigned cnt ); cmData_t* cmDataSetShortAllocPtr( cmData_t* p, const short* vp, unsigned cnt ); cmData_t* cmDataSetUShortAllocPtr( cmData_t* p, const unsigned short* vp, unsigned cnt ); cmData_t* cmDataSetIntAllocPtr( cmData_t* p, const int* vp, unsigned cnt ); cmData_t* cmDataSetUIntAllocPtr( cmData_t* p, const unsigned int* vp, unsigned cnt ); cmData_t* cmDataSetLongAllocPtr( cmData_t* p, const long* vp, unsigned cnt ); cmData_t* cmDataSetULongAllocPtr( cmData_t* p, const unsigned long* vp, unsigned cnt ); cmData_t* cmDataSetFloatAllocPtr( cmData_t* p, const float* vp, unsigned cnt ); cmData_t* cmDataSetDoubleAllocPtr( cmData_t* p, const double* vp, unsigned cnt ); // Dynamically allocate a data object and set it's value. cmData_t* cmDataAllocNull( cmData_t* parent ); cmData_t* cmDataAllocChar( cmData_t* parent, char v ); cmData_t* cmDataAllocUChar( cmData_t* parent, unsigned char v ); cmData_t* cmDataAllocShort( cmData_t* parent, short v ); cmData_t* cmDataAllocUShort( cmData_t* parent, unsigned short v ); cmData_t* cmDataAllocInt( cmData_t* parent, int v ); cmData_t* cmDataAllocUInt( cmData_t* parent, unsigned int v ); cmData_t* cmDataAllocLong( cmData_t* parent, long v ); cmData_t* cmDataAllocULong( cmData_t* parent, unsigned long v ); cmData_t* cmDataAllocFloat( cmData_t* parent, float v ); cmData_t* cmDataAllocDouble( cmData_t* parent, double v ); // Dynamically allocate a data object and set its array value to an external // array. v[cnt] is assigned as the internal data space for the object and // therefore must remain valid for the life of the object. // See the cmDataXXXAlocPtr() for equivalent functions which dynamically // allocate the intenal data space. cmData_t* cmDataAllocStr( cmData_t* parent, cmChar_t* str ); cmData_t* cmDataAllocConstStr( cmData_t* parent, const cmChar_t* str ); cmData_t* cmDataAllocCharPtr( cmData_t* parent, char* v, unsigned cnt ); cmData_t* cmDataAllocUCharPtr( cmData_t* parent, unsigned char* v, unsigned cnt ); cmData_t* cmDataAllocShortPtr( cmData_t* parent, short* v, unsigned cnt ); cmData_t* cmDataAllocUShortPtr( cmData_t* parent, unsigned short* v, unsigned cnt ); cmData_t* cmDataAllocIntPtr( cmData_t* parent, int* v, unsigned cnt ); cmData_t* cmDataAllocUIntPtr( cmData_t* parent, unsigned int* v, unsigned cnt ); cmData_t* cmDataAllocLongPtr( cmData_t* parent, long* v, unsigned cnt ); cmData_t* cmDataAllocULongPtr( cmData_t* parent, unsigned long* v, unsigned cnt ); cmData_t* cmDataAllocFloatPtr( cmData_t* parent, float* v, unsigned cnt ); cmData_t* cmDataAllocDoublePtr( cmData_t* parent, double* v, unsigned cnt ); cmData_t* cmDataAllocVoidPtr( cmData_t* parent, void* v, unsigned cnt ); // Dynamically allocate a data object and its array value. // These functions dynamically allocate the internal array data space // and copy v[cnt] into it. cmData_t* cmDataStrAlloc( cmData_t* parent, cmChar_t* str ); cmData_t* cmDataConstStrAlloc( cmData_t* parent, const cmChar_t* str ); cmData_t* cmDataCharAllocPtr( cmData_t* parent, const char* v, unsigned cnt ); cmData_t* cmDataUCharAllocPtr( cmData_t* parent, const unsigned char* v, unsigned cnt ); cmData_t* cmDataShortAllocPtr( cmData_t* parent, const short* v, unsigned cnt ); cmData_t* cmDataUShortAllocPtr( cmData_t* parent, const unsigned short* v, unsigned cnt ); cmData_t* cmDataIntAllocPtr( cmData_t* parent, const int* v, unsigned cnt ); cmData_t* cmDataUIntAllocPtr( cmData_t* parent, const unsigned int* v, unsigned cnt ); cmData_t* cmDataLongAllocPtr( cmData_t* parent, const long* v, unsigned cnt ); cmData_t* cmDataULongAllocPtr( cmData_t* parent, const unsigned long* v, unsigned cnt ); cmData_t* cmDataFloatAllocPtr( cmData_t* parent, const float* v, unsigned cnt ); cmData_t* cmDataDoubleAllocPtr( cmData_t* parent, const double* v, unsigned cnt ); cmData_t* cmDataVoidAllocPtr( cmData_t* parent, const void* v, unsigned cnt ); //---------------------------------------------------------------------------- // Structure related functions // // Release an object and any resources held by it. // Note the this function does not unlink the object // from it's parent. Use cmDataUnlinkAndFree() // to remove a object from it's parent list prior // to releasing it. void cmDataFree( cmData_t* p ); // Unlink 'p' from its parents and siblings. // Asserts if parent is not a structure. // Returns 'p'. cmData_t* cmDataUnlink( cmData_t* p ); // Wrapper function to cmDataUnlink() and cmDataFree(). void cmDataUnlinkAndFree( cmData_t* p ); // Replace the 'dst' node with the 'src' node and // return 'src'. This operation does not duplicate // 'src' it simply links in 'src' at the location of // 'dst' and then unlinks and free's 'dst'. cmData_t* cmDataReplace( cmData_t* dst, cmData_t* src ); // Return the count of child nodes. // 1. Array nodes have one child per array element. // 2. List nodes have one child pair. // 3. Pair nodes have two children. // 4. Leaf nodes have 0 children. unsigned cmDataChildCount( const cmData_t* p ); // Returns the ith child of 'p'. // Returns NULL if p has no children or index is invalid. cmData_t* cmDataChild( cmData_t* p, unsigned index ); // Prepend 'p' to 'parents' child list. // The source node 'p' is not duplicated it is simply linked in. // Returns 'p'. cmData_t* cmDataPrependChild(cmData_t* parent, cmData_t* p ); // Append 'p' to the end of 'parent' child list. // The source node 'p' is not duplicated it is simply linked in. // Returns 'p'. cmData_t* cmDataAppendChild( cmData_t* parent, cmData_t* p ); // Insert 'p' at index. Index must be in the range: // 0 to cmDataChildCount(parent). // The source node 'p' is not duplicated it is simply linked in. // Returns 'p'. cmData_t* cmDataInsertChild( cmData_t* parent, unsigned index, cmData_t* p ); //---------------------------------------------------------------------------- // Pair related functions // // Get the key/value of a pair cmData_t* cmDataPairKey( cmData_t* p ); unsigned cmDataPairKeyId( cmData_t* p ); const cmChar_t* cmDataPairKeyLabel( cmData_t* p ); cmData_t* cmDataPairValue( cmData_t* p ); // Set the value of an existing pair node. // 'value' is not duplicated it is simply linked in place of the // previous pair value node. The previous pair value node is // unlinked and freed. // Returns 'p'. cmData_t* cmDataPairSetValue( cmData_t* p, cmData_t* value ); // Set the key of an existing pair node. // // Returns 'p'. cmData_t* cmDataPairSetKey( cmData_t* p, cmData_t* key ); cmData_t* cmDataPairSetKeyId( cmData_t* p, unsigned id ); // The data space for the 'label' string is dynamically allocated. cmData_t* cmDataPairSetKeyLabel( cmData_t* p, const cmChar_t* label ); cmData_t* cmDataMakePair( cmData_t* parent, cmData_t* p, cmData_t* key, cmData_t* value ); // Dynamically allocate a pair node cmData_t* cmDataAllocPair( cmData_t* parent, const cmData_t* key, const cmData_t* value ); cmData_t* cmDataAllocPairId( cmData_t* parent, unsigned keyId, cmData_t* value ); // The data space for the 'label' string is dynamically allocated. cmData_t* cmDataAllocPairLabel( cmData_t* parent, const cmChar_t* label, cmData_t* value ); //---------------------------------------------------------------------------- // List related functions // // Return the count of ele's in the list. unsigned cmDataListCount( const cmData_t* p ); // Return the ith element in the list. cmData_t* cmDataListEle( cmData_t* p, unsigned index ); cmData_t* cmDataListMake( cmData_t* parent, cmData_t* p ); cmData_t* cmDataListAlloc( cmData_t* parent); // Var-args fmt: // {} // scalar types: is literal, is not included // null has no or // ptr types: is pointer, is element count // struct types: is cmData_t, is not included // Indicate the end of argument list by setting to kInvalidDtId. // The memory for array based data types is dynamically allocated. cmData_t* cmDataListAllocV(cmData_t* parent, va_list vl ); cmData_t* cmDataListAllocA(cmData_t* parent, ... ); // Returns a ptr to 'ele'. cmData_t* cmDataListAppendEle( cmData_t* p, cmData_t* ele ); cmDtRC_t cmDataListAppendV( cmData_t* p, va_list vl ); cmDtRC_t cmDataListAppend( cmData_t* p, ... ); // Return 'p'. cmData_t* cmDataListInsertEle( cmData_t* p, unsigned index, cmData_t* ele ); cmData_t* cmDataListInsertEleN(cmData_t* p, unsigned index, cmData_t* ele[], unsigned n ); cmData_t* cmDataListUnlink( cmData_t* p, unsigned index ); cmData_t* cmDataListFree( cmData_t* p, unsigned index ); //---------------------------------------------------------------------------- // Record related functions // // Return count of pairs. unsigned cmDataRecdCount( const cmData_t* p ); // Return the ith pair. cmData_t* cmDataRecdEle( cmData_t* p, unsigned index ); // Return the ith value. cmData_t* cmDataRecdValueFromIndex( cmData_t* p, unsigned index ); cmData_t* cmDataRecdValueFromId( cmData_t* p, unsigned id ); cmData_t* cmDataRecdValueFromLabel( cmData_t* p, const cmChar_t* label ); // Return the ith key cmData_t* cmDataRecdKey( cmData_t* p, unsigned index ); unsigned cmDataRecdKeyId( cmData_t* p, unsigned index ); const cmChar_t* cmDataRecdKeyLabel( cmData_t* p, unsigned index ); cmData_t* cmRecdMake( cmData_t* parent, cmData_t* p ); cmData_t* cmRecdAlloc( cmData_t* parent ); cmData_t* cmRecdAppendPair( cmData_t* p, cmData_t* pair ); // Var-args fmt: // {} // scalar types: is literal, is not included // null has no or // ptr types: is pointer, is element count // struct types: is cmData_t, is not included // Indicate the end of argument list by setting to kInvalidDtId. // The memory for array based data types is dynamically allocated. cmData_t* cmDataRecdAllocLabelV( cmData_t* parent, va_list vl ); cmData_t* cmDataRecdAllocLabelA( cmData_t* parent, ... ); cmData_t* cmDataRecdAllocIdV( cmData_t* parent, va_list vl ); cmData_t* cmDataRecdAllocIdA( cmData_t* parent, ... ); unsigned cmDataSerializeByteCount( const cmData_t* p ); cmDtRC_t cmDataSerialize( const cmData_t* p, void* buf, unsigned bufByteCnt ); cmDtRC_t cmDataDeserialize( const void* buf, unsigned bufByteCnt, cmData_t** pp ); void cmDataPrint( const cmData_t* p, cmRpt_t* rpt ); void cmDataTest( cmCtx_t* ctx ); #ifdef __cplusplus } #endif #endif