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Code Issues Releases Wiki Activity

Minor tweaks.

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This commit is contained in:
Birunthan Mohanathas 2012-01-23 15:43:31 +00:00
parent 017c2e9ad9
commit 430e287bec
2 changed files with 21 additions and 69 deletions
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88
Library/MathParser.cpp
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@ -203,14 +203,10 @@ WCHAR eBrackets [] = L"Unmatched brackets";
WCHAR eSyntax [] = L"Syntax error"; WCHAR eSyntax [] = L"Syntax error";
WCHAR eInternal [] = L"Internal error"; WCHAR eInternal [] = L"Internal error";
WCHAR eExtraOp [] = L"Extra operation"; WCHAR eExtraOp [] = L"Extra operation";
WCHAR eInfinity [] = L"Infinity somewhere"; WCHAR eInfinity [] = L"Division by 0";
WCHAR eInvArg [] = L"Invalid argument";
WCHAR eUnknFunc [] = L"\"%s\" is unknown"; WCHAR eUnknFunc [] = L"\"%s\" is unknown";
WCHAR eLogicErr [] = L"Logical expression error"; WCHAR eLogicErr [] = L"Logical expression error";
WCHAR eCalcErr [] = L"Calculation error";
WCHAR eValSizErr[] = L"Value too big for operation";
WCHAR eInvPrmCnt[] = L"Invalid function parameter count"; WCHAR eInvPrmCnt[] = L"Invalid function parameter count";
WCHAR g_ErrorBuffer[128];
WCHAR* MathParser::Check(const WCHAR* formula) WCHAR* MathParser::Check(const WCHAR* formula)
{ {
@ -250,6 +246,8 @@ WCHAR* MathParser::CheckParse(const WCHAR* formula, double* result)
WCHAR* MathParser::Parse(const WCHAR* formula, CMeasureCalc* calc, double* result) WCHAR* MathParser::Parse(const WCHAR* formula, CMeasureCalc* calc, double* result)
{ {
static WCHAR errorBuffer[128];
if (!*formula) if (!*formula)
{ {
*result = 0.0; *result = 0.0;
@ -399,11 +397,9 @@ WCHAR* MathParser::Parse(const WCHAR* formula, CMeasureCalc* calc, double* resul
break; break;
} }
WCHAR buffer[128 - _countof(eUnknFunc)]; std::wstring name(lexer.name, lexer.nameLen);
wcsncpy_s(buffer, lexer.name, lexer.nameLen); _snwprintf_s(errorBuffer, _TRUNCATE, eUnknFunc, name.c_str());
buffer[lexer.nameLen] = L'\0'; return errorBuffer;
_snwprintf_s(g_ErrorBuffer, _TRUNCATE, eUnknFunc, buffer);
return g_ErrorBuffer;
} }
break; break;
} }
@ -420,7 +416,11 @@ static WCHAR* Calc(Parser& parser)
Operation op = parser.opStack[parser.opTop--]; Operation op = parser.opStack[parser.opTop--];
// Multi-argument function // Multi-argument function
if (op.type == OP_FUNC_MULTIARG) if (op.type == OP_LOGIC)
{
return NULL;
}
else if (op.type == OP_FUNC_MULTIARG)
{ {
int paramcnt = parser.valTop - op.prevTop; int paramcnt = parser.valTop - op.prevTop;
@ -431,10 +431,6 @@ static WCHAR* Calc(Parser& parser)
parser.valStack[++parser.valTop] = res; parser.valStack[++parser.valTop] = res;
return NULL; return NULL;
} }
else if (op.type == OP_LOGIC)
{
return NULL;
}
else if (parser.valTop < 0) else if (parser.valTop < 0)
{ {
return eExtraOp; return eExtraOp;
@ -446,14 +442,7 @@ static WCHAR* Calc(Parser& parser)
// One arg operations // One arg operations
if (op.type == OP_NOT) if (op.type == OP_NOT)
{ {
if (right >= INT_MIN && right <= INT_MAX) res = (double)(~((long long)right));
{
res = ~((int)right);
}
else
{
return eValSizErr;
}
} }
else if (op.type == OP_FUNC_ONEARG) else if (op.type == OP_FUNC_ONEARG)
{ {
@ -471,25 +460,11 @@ static WCHAR* Calc(Parser& parser)
switch (op.type) switch (op.type)
{ {
case OP_SHL: case OP_SHL:
if (left >= INT_MIN && left <= INT_MAX && right >= INT_MIN && right <= INT_MAX) res = (double)((long long)left << (long long)right);
{
res = (int)left << (int)right;
}
else
{
return eValSizErr;
}
break; break;
case OP_SHR: case OP_SHR:
if (left >= INT_MIN && left <= INT_MAX && right >= INT_MIN && right <= INT_MAX) res = (double)((long long)left >> (long long)right);
{
res = (int)left >> (int)right;
}
else
{
return eValSizErr;
}
break; break;
case OP_POW: case OP_POW:
@ -559,36 +534,15 @@ static WCHAR* Calc(Parser& parser)
break; break;
case OP_XOR: case OP_XOR:
if (left >= INT_MIN && left <= INT_MAX && right >= INT_MIN && right <= INT_MAX) res = (double)((long long)left ^ (long long)right);
{
res = (int)left ^ (int)right;
}
else
{
return eValSizErr;
}
break; break;
case OP_AND: case OP_AND:
if (left >= INT_MIN && left <= INT_MAX && right >= INT_MIN && right <= INT_MAX) res = (double)((long long)left & (long long)right);
{
res = (int)left & (int)right;
}
else
{
return eValSizErr;
}
break; break;
case OP_OR: case OP_OR:
if (left >= INT_MIN && left <= INT_MAX && right >= INT_MIN && right <= INT_MAX) res = (double)((long long)left | (long long)right);
{
res = (int)left | (int)right;
}
else
{
return eValSizErr;
}
break; break;
case OP_EQU: case OP_EQU:
@ -605,14 +559,12 @@ static WCHAR* Calc(Parser& parser)
case OP_LOGIC_SEP: case OP_LOGIC_SEP:
{ {
// needs three arguments // Needs three arguments
double ValLL;
if (parser.opTop < 0 || parser.opStack[parser.opTop--].type != OP_LOGIC) if (parser.opTop < 0 || parser.opStack[parser.opTop--].type != OP_LOGIC)
{ {
return eLogicErr; return eLogicErr;
} }
ValLL = parser.valStack[parser.valTop--]; res = parser.valStack[parser.valTop--] ? left : right;
res = ValLL ? left : right;
} }
break; break;
@ -802,7 +754,7 @@ int FindSymbol(const WCHAR* str)
{ {
switch (str[0]) switch (str[0])
{ {
case L'(': return (int)OP_OBR; case L'(': return OP_OBR;
case L'+': return OP_ADD; case L'+': return OP_ADD;
case L'-': return OP_SUB; case L'-': return OP_SUB;
case L'*': return (str[1] == L'*') ? OP_POW : OP_MUL; case L'*': return (str[1] == L'*') ? OP_POW : OP_MUL;