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-rw-r--r--ICSharpCode.Decompiler/ILAst/PatternMatching.cs177
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diff --git a/ICSharpCode.Decompiler/ILAst/PatternMatching.cs b/ICSharpCode.Decompiler/ILAst/PatternMatching.cs
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--- a/ICSharpCode.Decompiler/ILAst/PatternMatching.cs
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@@ -1,177 +0,0 @@
-// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy of this
-// software and associated documentation files (the "Software"), to deal in the Software
-// without restriction, including without limitation the rights to use, copy, modify, merge,
-// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
-// to whom the Software is furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in all copies or
-// substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
-// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
-// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
-// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-// DEALINGS IN THE SOFTWARE.
-
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Linq;
-using Mono.Cecil;
-
-namespace ICSharpCode.Decompiler.ILAst
-{
- public static class PatternMatching
- {
- public static bool Match(this ILNode node, ILCode code)
- {
- ILExpression expr = node as ILExpression;
- return expr != null && expr.Prefixes == null && expr.Code == code;
- }
-
- public static bool Match<T>(this ILNode node, ILCode code, out T operand)
- {
- ILExpression expr = node as ILExpression;
- if (expr != null && expr.Prefixes == null && expr.Code == code && expr.Arguments.Count == 0) {
- operand = (T)expr.Operand;
- return true;
- }
- operand = default(T);
- return false;
- }
-
- public static bool Match(this ILNode node, ILCode code, out List<ILExpression> args)
- {
- ILExpression expr = node as ILExpression;
- if (expr != null && expr.Prefixes == null && expr.Code == code) {
- Debug.Assert(expr.Operand == null);
- args = expr.Arguments;
- return true;
- }
- args = null;
- return false;
- }
-
- public static bool Match(this ILNode node, ILCode code, out ILExpression arg)
- {
- List<ILExpression> args;
- if (node.Match(code, out args) && args.Count == 1) {
- arg = args[0];
- return true;
- }
- arg = null;
- return false;
- }
-
- public static bool Match<T>(this ILNode node, ILCode code, out T operand, out List<ILExpression> args)
- {
- ILExpression expr = node as ILExpression;
- if (expr != null && expr.Prefixes == null && expr.Code == code) {
- operand = (T)expr.Operand;
- args = expr.Arguments;
- return true;
- }
- operand = default(T);
- args = null;
- return false;
- }
-
- public static bool Match<T>(this ILNode node, ILCode code, out T operand, out ILExpression arg)
- {
- List<ILExpression> args;
- if (node.Match(code, out operand, out args) && args.Count == 1) {
- arg = args[0];
- return true;
- }
- arg = null;
- return false;
- }
-
- public static bool Match<T>(this ILNode node, ILCode code, out T operand, out ILExpression arg1, out ILExpression arg2)
- {
- List<ILExpression> args;
- if (node.Match(code, out operand, out args) && args.Count == 2) {
- arg1 = args[0];
- arg2 = args[1];
- return true;
- }
- arg1 = null;
- arg2 = null;
- return false;
- }
-
- public static bool MatchSingle<T>(this ILBasicBlock bb, ILCode code, out T operand, out ILExpression arg)
- {
- if (bb.Body.Count == 2 &&
- bb.Body[0] is ILLabel &&
- bb.Body[1].Match(code, out operand, out arg))
- {
- return true;
- }
- operand = default(T);
- arg = null;
- return false;
- }
-
- public static bool MatchSingleAndBr<T>(this ILBasicBlock bb, ILCode code, out T operand, out ILExpression arg, out ILLabel brLabel)
- {
- if (bb.Body.Count == 3 &&
- bb.Body[0] is ILLabel &&
- bb.Body[1].Match(code, out operand, out arg) &&
- bb.Body[2].Match(ILCode.Br, out brLabel))
- {
- return true;
- }
- operand = default(T);
- arg = null;
- brLabel = null;
- return false;
- }
-
- public static bool MatchLastAndBr<T>(this ILBasicBlock bb, ILCode code, out T operand, out ILExpression arg, out ILLabel brLabel)
- {
- if (bb.Body.ElementAtOrDefault(bb.Body.Count - 2).Match(code, out operand, out arg) &&
- bb.Body.LastOrDefault().Match(ILCode.Br, out brLabel))
- {
- return true;
- }
- operand = default(T);
- arg = null;
- brLabel = null;
- return false;
- }
-
- public static bool MatchThis(this ILNode node)
- {
- ILVariable v;
- return node.Match(ILCode.Ldloc, out v) && v.IsParameter && v.OriginalParameter.Index == -1;
- }
-
- public static bool MatchLdloc(this ILNode node, ILVariable expectedVar)
- {
- ILVariable v;
- return node.Match(ILCode.Ldloc, out v) && v == expectedVar;
- }
-
- public static bool MatchLdloca(this ILNode node, ILVariable expectedVar)
- {
- ILVariable v;
- return node.Match(ILCode.Ldloca, out v) && v == expectedVar;
- }
-
- public static bool MatchStloc(this ILNode node, ILVariable expectedVar, out ILExpression expr)
- {
- ILVariable v;
- return node.Match(ILCode.Stloc, out v, out expr) && v == expectedVar;
- }
-
- public static bool MatchLdcI4(this ILNode node, int expectedValue)
- {
- int v;
- return node.Match(ILCode.Ldc_I4, out v) && v == expectedValue;
- }
- }
-}