81 lines
2.4 KiB
C#
81 lines
2.4 KiB
C#
//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (C) Lluis Sanchez Gual, 2004
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//
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#if !FULL_AOT_RUNTIME
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using System;
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using System.Reflection;
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using System.Reflection.Emit;
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namespace Mono.CodeGeneration
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{
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public class CodeWhile: CodeStatement
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{
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CodeExpression condition;
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CodeBlock whileBlock;
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public CodeWhile (CodeExpression condition)
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{
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this.condition = condition;
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if (condition.GetResultType () != typeof(bool))
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throw new InvalidOperationException ("Condition expression is not boolean");
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}
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public override void Generate (ILGenerator gen)
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{
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Label startLabel = gen.DefineLabel ();
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Label checkLabel = gen.DefineLabel ();
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gen.Emit (OpCodes.Br, checkLabel);
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gen.MarkLabel(startLabel);
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whileBlock.Generate (gen);
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gen.MarkLabel(checkLabel);
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if (condition is CodeConditionExpression)
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((CodeConditionExpression)condition).GenerateForBranch (gen, startLabel, true);
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else {
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condition.Generate (gen);
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gen.Emit (OpCodes.Brtrue, startLabel);
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}
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}
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public override void PrintCode (CodeWriter cp)
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{
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cp.Write ("while (");
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condition.PrintCode (cp);
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cp.Write (") {");
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cp.EndLine ();
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cp.Indent ();
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whileBlock.PrintCode (cp);
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cp.Unindent ();
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cp.BeginLine ().Write ("}");
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}
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public CodeBlock WhileBlock
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{
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get { return whileBlock; }
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set { whileBlock = value; }
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}
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}
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}
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#endif
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