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Calc: Fixed handling of negative numbers without brackets

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"5+-1" is now valid and equal to "5+(-1)".
This commit is contained in:
Birunthan Mohanathas 2012-12-22 11:45:15 +02:00
parent 4e16218dec
commit 0b84213eb6
1 changed files with 11 additions and 2 deletions
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13
Library/MathParser.cpp
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@ -67,6 +67,7 @@ enum CharType
CH_DIGIT = 0x02,
CH_SEPARAT = 0x04,
CH_SYMBOL = 0x08,
CH_MINUS = 0x10,
CH_FINAL = 0x7F
};
@ -598,7 +599,13 @@ MathTokenType GetNextToken(Lexer& lexer)
{
lexer.charType = GetCharType(*++lexer.string);
}
if (lexer.charType == CH_MINUS)
{
// If the - sign follows a symbol, it is treated as a (negative) number.
lexer.charType = (lexer.prevToken == TOK_SYMBOL) ? CH_DIGIT : CH_SYMBOL;
}
switch (lexer.charType)
{
case CH_FINAL:
@ -705,8 +712,10 @@ CharType GetCharType(WCHAR ch)
case L'_':
return CH_LETTER;
case L'+':
case L'-':
return CH_MINUS;
case L'+':
case L'/':
case L'*':
case L'~':