protected Exp parseCompareExpr()
{
LexTokenSymbol opToken;
Exp resultExpr = parseAddSub();
while (tape.HasCurrent && IsCompareOp(tape.Current))
{
opToken = (LexTokenSymbol)(tape.Current);
tape.MoveNext();
Exp rightExpr = parseAddSub();
resultExpr = new ExpBinary(expContext)
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
return(resultExpr);
}
public Exp parseAddSub()
{
LexTokenSymbol opToken;
Exp resultExpr = parseMulDiv();
while (tape.HasCurrent && tape.Current.IsKind(TokenKindSymbol.ADD, TokenKindSymbol.SUB))
{
opToken = (LexTokenSymbol)(tape.Current);
tape.MoveNext();
Exp rightExpr = parseAddSub();
resultExpr = new ExpBinary(expContext)
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
return(resultExpr);
}
public Exp parseAddSub()
{
Token opToken;
Exp resultExpr = parseMulDiv();
while (tape.CurrentKind == TokenKind.ADD || tape.CurrentKind == TokenKind.SUB)
{
opToken = tape.Current;
tape.MoveNext();
Exp rightExpr = parseAddSub();
resultExpr = new ExpBinary()
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
return(resultExpr);
}
private Exp parseBinaryLogicExp()
{
Token opToken;
Exp resultExpr = parseCompareExpr();
while (tape.CurrentKind == TokenKind.AND || tape.CurrentKind == TokenKind.OR)
{
opToken = tape.Current;
tape.MoveNext();
Exp rightExpr = parseCompareExpr();
resultExpr = new ExpBinary()
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
return(resultExpr);
}
Exp parseMulDiv()
{
//report("parseMulDiv");
LexTokenSymbol opToken;
Exp resultExpr = ParseChain();
while (tape.HasCurrent && tape.Current.IsKind(TokenKindSymbol.MUL, TokenKindSymbol.DIV))
{
opToken = (LexTokenSymbol)(tape.Current);
tape.MoveNext();
Exp rightExpr = parseMulDiv();
resultExpr = new ExpBinary(expContext)
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
return(resultExpr);
}
private Exp ParseBinaryLogicExp()
{
LexTokenSymbol opToken;
Exp resultExpr = parseCompareExpr();
while (tape.HasCurrent && tape.Current.IsKind(TokenKindSymbol.AND, TokenKindSymbol.OR))
{
opToken = (LexTokenSymbol)(tape.Current);
tape.MoveNext();
Exp rightExpr = parseCompareExpr();
resultExpr = new ExpBinary(expContext)
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
//resultExpr.SetContextExp(this.expContext);
return(resultExpr);
}
Exp parseMulDiv()
{
//report("parseMulDiv");
Token opToken;
Exp resultExpr = parseCall();
while (tape.Current.Kind == TokenKind.MUL || tape.Current.Kind == TokenKind.DIV)
{
opToken = tape.Current;
tape.MoveNext();
Exp rightExpr = parseMulDiv();
resultExpr = new ExpBinary()
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
return(resultExpr);
}
protected Exp parseCompareExpr()
{
Token opToken;
Exp resultExpr = parseAddSub();
//while (CurrentToken.Kind == TokenKind.GT || CurrentToken.Kind == TokenKind.LT || CurrentToken.Kind == TokenKind.GE
// || CurrentToken.Kind == TokenKind.LE || CurrentToken.Kind == TokenKind.NE || CurrentToken.Kind == TokenKind.EQ)
while (TokenKindHelper.IsCompareOp(tape.CurrentKind))
{
opToken = tape.Current;
tape.MoveNext();
Exp rightExpr = parseAddSub();
resultExpr = new ExpBinary()
{
LeftExp = resultExpr, OpToken = opToken, RightExp = rightExpr
};
}
return(resultExpr);
}