public bool ValueEquals(LessOrEqualExpression other) { if (ReferenceEquals(null, other)) { return(false); } if (ReferenceEquals(this, other)) { return(true); } return(Left.ValueEquals(other.Left) && Right.ValueEquals(other.Right)); }
Expression ParseExpression(Precedence p, bool vectorMode) { var e = ParseUnaryExpression(vectorMode); while (e != null) { var op = Peek(); if (op == TokenType.Period) { Consume(); var id = Consume(); if (!IsIdentifier(id)) { Error("Expected identifier after '.'"); } e = new MemberExpression(e, id.Value); continue; } if (op == TokenType.LeftSquareBrace) { Consume(); var index = ParseExpression(Precedence.Invalid, true); if (Peek() != TokenType.RightSquareBrace) { Error("Expected ]"); } Consume(); e = new LookUpExpression(e, index); continue; } if (p < Precedence.Assignment) { if (TryConsume(TokenType.Colon)) { e = new NameValuePairExpression(e, Expect(ParseExpression(Precedence.Assignment, false))); continue; } } if (p < Precedence.Conditional) { if (TryConsume(TokenType.QuestionMark)) { var case1 = Expect(ParseExpression(Precedence.Conditional, false)); if (!TryConsume(TokenType.Colon)) { Error("Expected ':'"); } var case2 = Expect(ParseExpression(Precedence.Conditional, false)); e = new ConditionalExpression(e, case1, case2); continue; } } if (p < Precedence.Multiplicative) { if (TryConsume(TokenType.Mul)) { e = new MultiplyExpression(e, Expect(ParseExpression(Precedence.Multiplicative, false))); continue; } if (TryConsume(TokenType.Div)) { e = new DivideExpression(e, Expect(ParseExpression(Precedence.Multiplicative, false))); continue; } } if (p < Precedence.Additive) { if (TryConsume(TokenType.Plus)) { e = new AddExpression(e, Expect(ParseExpression(Precedence.Additive, false))); continue; } if (TryConsume(TokenType.Minus)) { e = new SubtractExpression(e, Expect(ParseExpression(Precedence.Additive, false))); continue; } } if (p < Precedence.LogicalAnd) { if (TryConsume(TokenType.LogAnd)) { e = new LogicalAndExpression(e, Expect(ParseExpression(Precedence.LogicalAnd, false))); continue; } } if (p < Precedence.LogicalOr) { if (TryConsume(TokenType.LogOr)) { e = new LogicalOrExpression(e, Expect(ParseExpression(Precedence.LogicalOr, false))); continue; } } if (p < Precedence.Relational) { if (TryConsume(TokenType.LessThan)) { e = new LessThanExpression(e, Expect(ParseExpression(Precedence.Relational, false))); continue; } if (TryConsume(TokenType.LessOrEqual)) { e = new LessOrEqualExpression(e, Expect(ParseExpression(Precedence.Relational, false))); continue; } if (TryConsume(TokenType.GreaterThan)) { e = new GreaterThanExpression(e, Expect(ParseExpression(Precedence.Relational, false))); continue; } if (TryConsume(TokenType.GreaterOrEqual)) { e = new GreaterOrEqualExpression(e, Expect(ParseExpression(Precedence.Relational, false))); continue; } if (TryConsume(TokenType.NotEqual)) { e = new NotEqualExpression(e, Expect(ParseExpression(Precedence.Relational, false))); continue; } if (TryConsume(TokenType.Equal)) { e = new EqualExpression(e, Expect(ParseExpression(Precedence.Relational, false))); continue; } } if (p < Precedence.NullCoalescing) { if (TryConsume(TokenType.DoubleQuestionMark)) { e = new NullCoalesceExpression(e, Expect(ParseExpression(Precedence.NullCoalescing, false))); } } // Vector op if (vectorMode && p == Precedence.Invalid && Peek() == TokenType.Comma) { var comps = new List <Expression>(); comps.Add(e); while (TryConsume(TokenType.Comma)) { e = Expect(ParseExpression(Precedence.Invalid, false)); comps.Add(e); } e = new VectorExpression(comps.ToArray()).TryFold(); } break; } return(e); }