static private CheckType ( |
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p | ||
t | PrecType | |
d | int | |
return | int |
public Precedence(Precedence.PrecType t, int p, Precedence next) { if (Precedence.CheckType(next, t, 0) != 0) { Console.WriteLine("redeclaration of precedence"); } this.m_next = next; this.m_type = t; this.m_prec = p; }
public static int Check(CSymbol s, Production p, int d) { if (s.m_prec == null) { return(0); } int num1 = Precedence.CheckType(s.m_prec, Precedence.PrecType.after, d + 1); int num2 = Precedence.CheckType(s.m_prec, Precedence.PrecType.left, d + 1); if (num1 > num2) { return(num1 - p.m_prec); } return(num2 - p.m_prec); }
public static void Check(Production p) { int count = p.m_rhs.Count; while (count > 1 && ((SYMBOL)p.m_rhs[count - 1]).IsAction()) { --count; } switch (count) { case 2: if ((CSymbol)p.m_rhs[0] == p.m_lhs) { int num = Precedence.Check(((CSymbol)p.m_rhs[1]).m_prec, Precedence.PrecType.after, 0); if (num == 0) { break; } p.m_prec = num; break; } if ((CSymbol)p.m_rhs[1] != p.m_lhs) { break; } int num1 = Precedence.Check(((CSymbol)p.m_rhs[0]).m_prec, Precedence.PrecType.before, 0); if (num1 == 0) { break; } p.m_prec = num1; break; case 3: int num2 = Precedence.CheckType(((CSymbol)p.m_rhs[1]).m_prec, Precedence.PrecType.left, 0); if (num2 == 0 || (CSymbol)p.m_rhs[2] != p.m_lhs) { break; } p.m_prec = num2; break; } }