private static LogicExpression SplitWordsByOperator(String[] paramArrayOfString, int position, Operator paramInt2,
ParserSyntax paramParserSyntax)
{
int m;
if (position == 0)
throw new UnexpectedSymbolException("Operator at beginning of list of arguments");
if (position == paramArrayOfString.Length - 1)
{
throw new UnexpectedSymbolException("Operator at end of list of arguments");
}
if ((paramInt2 == Operator.Implies) || (paramInt2 == Operator.Biimplies) || (paramInt2 == Operator.Xor))
{
var arrayOfLogicExpression1 = new LogicExpression[2];
var arrayOfString1 = new String[position];
var arrayOfString2 = new String[paramArrayOfString.Length - position - 1];
for (m = 0; m < arrayOfString1.Length; m++)
{
arrayOfString1[m] = paramArrayOfString[m];
}
m = position + 1;
for (int n = 0; n < arrayOfString2.Length; n++)
{
arrayOfString2[n] = paramArrayOfString[(m++)];
}
arrayOfLogicExpression1[0] = ParseWords(arrayOfString1, paramParserSyntax);
arrayOfLogicExpression1[1] = ParseWords(arrayOfString2, paramParserSyntax);
var localLogicBranch1 = new LogicBranch(paramInt2, false) {Branches = arrayOfLogicExpression1};
return localLogicBranch1;
}
int i = 2;
for (int k = position - 1; k >= 0; k--)
{
Operator j = GetOperatorValue(paramArrayOfString[k]);
if (j == Operator.None)
continue;
if (j != paramInt2)
{
break;
}
paramParserSyntax.UpdateLogicSyntax(GetLogicSyntax(paramArrayOfString[k]));
i++;
}
var arrayOfLogicExpression2 = new LogicExpression[i];
m = paramArrayOfString.Length - 1;
for (int i2 = arrayOfLogicExpression2.Length - 1; i2 >= 0; i2--)
{
int i1 = 0;
int i3;
for (i3 = m; i3 >= 0; i3--)
{
var j = GetOperatorValue(paramArrayOfString[i3]);
if (j != paramInt2)
i1++;
else if (j == paramInt2)
{
break;
}
}
var arrayOfString3 = new String[i1];
i3 = m - i1;
int i4 = i1 - 1;
for (int i5 = m; i5 > i3; i5--)
{
arrayOfString3[(i4--)] = paramArrayOfString[i5];
}
m = m - i1 - 1;
arrayOfLogicExpression2[i2] = ParseWords(arrayOfString3, paramParserSyntax);
}
var localLogicBranch2 = new LogicBranch(paramInt2, false) {Branches = arrayOfLogicExpression2};
return localLogicBranch2;
}
private static LogicExpression ParseWords(String[] paramArrayOfString, ParserSyntax paramParserSyntax)
{
if (paramArrayOfString.Length == 1)
{
String[] arrayOfString = BreakDownInToWords(paramArrayOfString[0]);
if (arrayOfString.Length == 1)
{
return GenerateLiteral(paramArrayOfString[0], paramParserSyntax);
}
paramArrayOfString = arrayOfString;
}
int j;
for (j = paramArrayOfString.Length - 1; j >= 0; j--)
{
Operator i = GetOperatorValue(paramArrayOfString[j]);
if (i == Operator.Implies)
{
var k = GetLogicSyntax(paramArrayOfString[j]);
if (k != 0)
{
paramParserSyntax.UpdateLogicSyntax(k);
}
return SplitWordsByOperator(paramArrayOfString, j, Operator.Implies, paramParserSyntax);
}
if (i == Operator.Biimplies)
{
var k = GetLogicSyntax(paramArrayOfString[j]);
if (k != 0)
{
paramParserSyntax.UpdateLogicSyntax(k);
}
return SplitWordsByOperator(paramArrayOfString, j, Operator.Biimplies, paramParserSyntax);
}
}
for (j = paramArrayOfString.Length - 1; j >= 0; j--)
{
Operator i = GetOperatorValue(paramArrayOfString[j]);
if (i == Operator.Or)
{
paramParserSyntax.UpdateLogicSyntax(GetLogicSyntax(paramArrayOfString[j]));
return SplitWordsByOperator(paramArrayOfString, j, Operator.Or, paramParserSyntax);
}
if (paramArrayOfString[j].Equals("!="))
{
return SplitWordsByOperator(paramArrayOfString, j, Operator.Xor, paramParserSyntax);
}
}
for (j = paramArrayOfString.Length - 1; j >= 0; j--)
{
if (GetOperatorValue(paramArrayOfString[j]) != 0)
continue;
paramParserSyntax.UpdateLogicSyntax(GetLogicSyntax(paramArrayOfString[j]));
return SplitWordsByOperator(paramArrayOfString, j, 0, paramParserSyntax);
}
if (paramParserSyntax.NegationSyntax == NegationSyntax.Unknown)
{
if (paramArrayOfString[0].Equals("NOT", StringComparison.OrdinalIgnoreCase))
paramParserSyntax.UpdateNegationSyntax(NegationSyntax.Written);
else if (paramArrayOfString[0].Equals("~"))
paramParserSyntax.UpdateNegationSyntax(NegationSyntax.Before);
else if (paramArrayOfString[(paramArrayOfString.Length - 1)].Equals("'"))
{
paramParserSyntax.UpdateNegationSyntax(NegationSyntax.After);
}
else
{
throw new UnexpectedSymbolException("More than one literal found and no operators");
}
}
j = 0;
var kk = paramArrayOfString.Length - 1;
LogicExpression localLogicExpression = null;
int m;
if (paramParserSyntax.NegationSyntax == NegationSyntax.Written)
{
for (m = 0; m < kk; m++)
{
if (!paramArrayOfString[m].Equals("NOT", StringComparison.OrdinalIgnoreCase))
{
throw new UnexpectedSymbolException("Expected 'NOT' instead of (or operator after) '" +
paramArrayOfString[m] + "'");
}
j = j == 0 ? 1 : 0;
}
localLogicExpression = Parse(paramArrayOfString[kk], paramParserSyntax);
}
else if (paramParserSyntax.NegationSyntax == NegationSyntax.Before)
{
for (m = 0; m < kk; m++)
{
if (!paramArrayOfString[m].Equals("~"))
{
throw new UnexpectedSymbolException("Expected '~' instead of (or operator after) '" +
paramArrayOfString[m] + "'");
}
j = j == 0 ? 1 : 0;
}
localLogicExpression = Parse(paramArrayOfString[kk], paramParserSyntax);
}
else if (paramParserSyntax.NegationSyntax == NegationSyntax.After)
{
for (m = kk; m > 0; m--)
{
if (!paramArrayOfString[m].Equals("'"))
{
throw new UnexpectedSymbolException("Expected \"'\" instead of (or operator before) '" +
paramArrayOfString[m] + "'");
}
j = j == 0 ? 1 : 0;
}
localLogicExpression = Parse(paramArrayOfString[0], paramParserSyntax);
}
localLogicExpression.Negated = j == 1;
return localLogicExpression;
}
private static LogicExpression GenerateLiteral(String paramString, ParserSyntax paramParserSyntax)
{
var i = paramParserSyntax.NegationSyntax;
if (i == NegationSyntax.Unknown)
{
if (paramString[0] == '~')
paramParserSyntax.UpdateNegationSyntax(NegationSyntax.Before);
else if (paramString[paramString.Length - 1] == '\'')
{
paramParserSyntax.UpdateNegationSyntax(NegationSyntax.After);
}
}
bool @bool = false;
int j;
if (i == NegationSyntax.Before)
{
if (paramString[paramString.Length - 1] == '\'')
{
throw new DifferentSyntaxesUsedException("Incorrect negation");
}
for (j = 0; (j < paramString.Length) && (paramString[j] == '~'); j++)
{
@bool = !@bool;
}
if ((j == paramString.Length - 1) && (paramString[j] == '~'))
{
throw new UnexpectedSymbolException("Negator(s) without literal");
}
}
else if (i == NegationSyntax.After)
{
if (paramString[0] == '~')
{
throw new DifferentSyntaxesUsedException("Incorrect negation");
}
for (j = paramString.Length - 1; (j >= 0) && (paramString[j] == '\''); j--)
{
@bool = !@bool;
}
if ((j == 0) && (paramString[0] == '\''))
{
throw new UnexpectedSymbolException("Negator(s) without literal");
}
}
LogicExpression localLogicExpression = GenerateLiteral(paramString);
localLogicExpression.Negated = @bool;
return localLogicExpression;
}
private static LogicExpression Parse(String paramString, ParserSyntax paramParserSyntax)
{
if (paramString.Length == 0)
{
throw new EmptyLogicException("No expression entered");
}
paramString = StripDown(paramString);
if (paramString.Length == 0)
{
throw new EmptyLogicException("Only whitespace or brackets entered");
}
String[] arrayOfString = BreakDownInToWords(paramString);
return ParseWords(arrayOfString, paramParserSyntax);
}
public static ParsedExpression ParseLogic(String paramString)
{
var localParserSyntax = new ParserSyntax();
LogicExpression localLogicExpression = Parse(paramString, localParserSyntax);
var i = localParserSyntax.LogicSyntax;
var j = localParserSyntax.NegationSyntax;
if (i == LogicSyntax.f0)
{
if (j == NegationSyntax.Unknown)
{
i = LogicSyntax.DotPlus;
j = GetNegationSyntax(i);
}
else
{
switch (j)
{
case NegationSyntax.Written:
i = LogicSyntax.Written;
break;
case NegationSyntax.Before:
case NegationSyntax.After:
i = LogicSyntax.DotPlus;
break;
}
}
}
return new ParsedExpression(paramString, localLogicExpression, i, j);
}
