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cwObject.h : Fixed bug where type CString was confused for type String. Added comments, and error messages.

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This commit is contained in:
kevin.larke 2020-04-09 21:06:06 -04:00
parent 4d5dadf0b9
commit 6670a961be
2 changed files with 29 additions and 4 deletions
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26
cwObject.cpp
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@ -90,8 +90,25 @@ namespace cw
return cwLogError(kInvalidArgRC, "There is no conversion from '%s' to '%s'.", _objTypeIdToLabel(tid), o->type->label);
}
rc_t _objTypeValueFromCString( const object_t* o, unsigned tid, void* dst )
{
if( tid == kCStringTId )
{
*(const char**)dst = o->u.str;
return kOkRC;
}
return _objTypeValueFromNonValue(o,tid,dst);
}
rc_t _objTypeValueFromString( const object_t* o, unsigned tid, void* dst )
{
// When objects are parsed all strings are non-const. therefore when a string is retrieved
// from an object the string will always be non-const - but the type of the variable
// to receive the value may be const - we detect this here and redirect to the 'const char*'
// version of the function.
if( tid == kCStringTId )
return _objTypeValueFromCString(o,tid,dst);
if( tid == kStringTId )
{
*(char**)dst = o->u.str;
@ -100,6 +117,7 @@ namespace cw
return _objTypeValueFromNonValue(o,tid,dst);
}
rc_t _objTypeValueFromVect( const object_t* o, unsigned tid, void* dst )
{ return _objTypeValueFromNonValue(o,tid,dst); }
@ -279,7 +297,7 @@ namespace cw
{ kFloatTId, "float", 0, _objTypeFree, _objTypeValueFromFloat, _objTypePrintFloat, _objTypeToStringFloat },
{ kDoubleTId, "double", 0, _objTypeFree, _objTypeValueFromDouble, _objTypePrintDouble, _objTypeToStringDouble },
{ kStringTId, "string", 0, _objTypeFreeString, _objTypeValueFromString, _objTypePrintString, _objTypeToStringString },
{ kCStringTId, "cstring", 0, _objTypeFree, _objTypeValueFromString, _objTypePrintString, _objTypeToStringString },
{ kCStringTId, "cstring", 0, _objTypeFree, _objTypeValueFromCString, _objTypePrintString, _objTypeToStringString },
{ kVectTId, "vect", 0, _objTypeFree, _objTypeValueFromVect, _objTypePrintVect, _objTypeToStringVect },
{ kPairTId, "pair", kContainerFl | kValueContainerFl, _objTypeFree, _objTypeValueFromNonValue, _objTypePrintPair, _objTypeToStringPair },
{ kListTId, "list", kContainerFl | kValueContainerFl, _objTypeFree, _objTypeValueFromNonValue, _objTypePrintList, _objTypeToStringList },
@ -764,7 +782,11 @@ cw::rc_t cw::objectFromFile( const char* fn, object_t*& objRef )
unsigned bufByteCnt = 0;
char* buf = NULL;
if(( buf = file::fnToStr(fn, &bufByteCnt)) != NULL )
objRef = nullptr;
if(( buf = file::fnToStr(fn, &bufByteCnt)) == NULL )
rc = cwLogError(kOpFailRC,"File to text buffer conversion failed on '%s'.",cwStringNullGuard(fn));
else
{
rc = objectFromString( buf, objRef );
mem::release(buf);

5
cwObject.h
View File

@ -162,13 +162,16 @@ namespace cw
rc_t getv() const { return kOkRC; }
// getv("label0",v0,"label1",v1, ... )
template< typename T0, typename T1, typename... ARGS >
rc_t getv( T0 label, T1& valRef, ARGS&&... args ) const
{
rc_t rc;
if((rc = get(label,valRef)) == kOkRC )
rc = getv(std::forward<ARGS>(args)...);
if((rc = getv(std::forward<ARGS>(args)...)) != kOkRC )
cwLogError(rc,"getv() failed for the pair label:'%s'.",cwStringNullGuard(label));
return rc;
}