mirror of https://github.com/icsharpcode/ILSpy.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
3.6 KiB
84 lines
3.6 KiB
// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt) |
|
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt) |
|
|
|
using System; |
|
using System.Collections.Generic; |
|
using ICSharpCode.NRefactory.VB.Ast; |
|
|
|
namespace ICSharpCode.NRefactory.VB |
|
{ |
|
/// <summary> |
|
/// Stores the operator precedences for the output visitor. |
|
/// </summary> |
|
static class OperatorPrecedence |
|
{ |
|
static readonly Dictionary<BinaryOperatorType, int> vbDict = MakePrecedenceTable( |
|
new BinaryOperatorType[] { BinaryOperatorType.Power }, |
|
new BinaryOperatorType[] { BinaryOperatorType.Multiply, BinaryOperatorType.Divide }, |
|
new BinaryOperatorType[] { BinaryOperatorType.DivideInteger }, |
|
new BinaryOperatorType[] { BinaryOperatorType.Modulus }, |
|
new BinaryOperatorType[] { BinaryOperatorType.Add, BinaryOperatorType.Subtract }, |
|
new BinaryOperatorType[] { BinaryOperatorType.Concat }, |
|
new BinaryOperatorType[] { BinaryOperatorType.ShiftLeft, BinaryOperatorType.ShiftRight }, |
|
new BinaryOperatorType[] { |
|
BinaryOperatorType.Equality, BinaryOperatorType.InEquality, |
|
BinaryOperatorType.LessThan, BinaryOperatorType.LessThanOrEqual, |
|
BinaryOperatorType.GreaterThan, BinaryOperatorType.GreaterThanOrEqual, |
|
BinaryOperatorType.ReferenceEquality, BinaryOperatorType.ReferenceInequality, |
|
BinaryOperatorType.Like |
|
}, |
|
new BinaryOperatorType[] { BinaryOperatorType.LogicalAnd, BinaryOperatorType.BitwiseAnd }, |
|
new BinaryOperatorType[] { BinaryOperatorType.LogicalOr, BinaryOperatorType.BitwiseOr }, |
|
new BinaryOperatorType[] { BinaryOperatorType.ExclusiveOr } |
|
); |
|
|
|
static readonly Dictionary<BinaryOperatorType, int> csharpDict = MakePrecedenceTable( |
|
new BinaryOperatorType[] { BinaryOperatorType.Multiply, BinaryOperatorType.Divide, BinaryOperatorType.Modulus }, |
|
new BinaryOperatorType[] { BinaryOperatorType.Add, BinaryOperatorType.Subtract }, |
|
new BinaryOperatorType[] { BinaryOperatorType.ShiftLeft, BinaryOperatorType.ShiftRight }, |
|
new BinaryOperatorType[] { |
|
BinaryOperatorType.LessThan, BinaryOperatorType.LessThanOrEqual, |
|
BinaryOperatorType.GreaterThan, BinaryOperatorType.GreaterThanOrEqual, |
|
}, |
|
new BinaryOperatorType[] { BinaryOperatorType.Equality, BinaryOperatorType.InEquality }, |
|
new BinaryOperatorType[] { BinaryOperatorType.BitwiseAnd }, |
|
new BinaryOperatorType[] { BinaryOperatorType.ExclusiveOr }, |
|
new BinaryOperatorType[] { BinaryOperatorType.BitwiseOr }, |
|
new BinaryOperatorType[] { BinaryOperatorType.LogicalAnd, BinaryOperatorType.LogicalOr }, |
|
new BinaryOperatorType[] { BinaryOperatorType.NullCoalescing } |
|
); |
|
|
|
// create a dictionary operator->precedence (higher value = higher precedence) |
|
static Dictionary<BinaryOperatorType, int> MakePrecedenceTable(params BinaryOperatorType[][] input) |
|
{ |
|
Dictionary<BinaryOperatorType, int> dict = new Dictionary<BinaryOperatorType, int>(); |
|
for (int i = 0; i < input.Length; i++) { |
|
foreach (BinaryOperatorType op in input[i]) { |
|
dict.Add(op, input.Length - i); |
|
} |
|
} |
|
return dict; |
|
} |
|
|
|
public static int ComparePrecedenceVB(BinaryOperatorType op1, BinaryOperatorType op2) |
|
{ |
|
int p1 = GetOperatorPrecedence(vbDict, op1); |
|
int p2 = GetOperatorPrecedence(vbDict, op2); |
|
return p1.CompareTo(p2); |
|
} |
|
|
|
public static int ComparePrecedenceCSharp(BinaryOperatorType op1, BinaryOperatorType op2) |
|
{ |
|
int p1 = GetOperatorPrecedence(csharpDict, op1); |
|
int p2 = GetOperatorPrecedence(csharpDict, op2); |
|
return p1.CompareTo(p2); |
|
} |
|
|
|
static int GetOperatorPrecedence(Dictionary<BinaryOperatorType, int> dict, BinaryOperatorType op) |
|
{ |
|
int p; |
|
dict.TryGetValue(op, out p); |
|
return p; |
|
} |
|
} |
|
}
|
|
|