67 lines
2.3 KiB
C#
67 lines
2.3 KiB
C#
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/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Diagnostics;
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using dnSpy.Contracts.Decompiler;
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namespace dnSpy.Debugger.DotNet.Disassembly {
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struct ILSourceStatementProvider {
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readonly string text;
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readonly MethodDebugInfo debugInfo;
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public bool IsDefault => text is null;
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public ILSourceStatementProvider(string text, MethodDebugInfo debugInfo) {
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this.text = text ?? throw new ArgumentNullException(nameof(text));
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this.debugInfo = debugInfo ?? throw new ArgumentNullException(nameof(debugInfo));
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}
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public (string line, TextSpan span) GetStatement(int ilOffset, int endILOffset) {
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Debug.Assert(ilOffset <= endILOffset);
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var text = this.text;
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var debugInfo = this.debugInfo;
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if (text is null || debugInfo is null)
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return default;
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var stmt = debugInfo.GetSourceStatementByCodeOffset((uint)ilOffset);
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SourceStatement? stmtEnd;
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if (endILOffset == int.MaxValue) {
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if (debugInfo.Statements.Length == 0)
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stmtEnd = null;
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else
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stmtEnd = debugInfo.Statements[debugInfo.Statements.Length - 1];
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}
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else if (ilOffset < endILOffset)
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stmtEnd = debugInfo.GetSourceStatementByCodeOffset((uint)endILOffset - 1);
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else if (ilOffset == endILOffset)
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stmtEnd = stmt;
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else
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stmtEnd = null;
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if (stmt is null || stmtEnd is null)
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return default;
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Debug.Assert(stmt.Value.TextSpan.Start <= stmtEnd.Value.TextSpan.End);
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if (stmt.Value.TextSpan.Start > stmtEnd.Value.TextSpan.End)
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return default;
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var fullSpan = TextSpan.FromBounds(stmt.Value.TextSpan.Start, stmtEnd.Value.TextSpan.End);
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return SourceStatementProvider.GetStatement(fullSpan, text);
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}
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}
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}
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