C# ICorDebugFunction.GetILCode方法代码示例

		/// <summary>
		/// 'ILStart &lt;= ILOffset &lt;= ILEnd' and this range includes at least
		/// the returned area of source code. (May incude some extra compiler generated IL too)
		/// </summary>
		internal static SourcecodeSegment Resolve(Module module, ICorDebugFunction corFunction, int offset)
		{
			ISymUnmanagedReader symReader = module.SymReader;
			if (symReader == null) return null; // No symbols
			
			ISymUnmanagedMethod symMethod;
			try {
				symMethod = symReader.GetMethod(corFunction.GetToken());
			} catch (COMException) {
				// Can not find the method
				// eg. Compiler generated constructors are not in symbol store
				return null;
			}
			if (symMethod == null) return null;
			
			uint sequencePointCount = symMethod.GetSequencePointCount();
			SequencePoint[] sequencePoints = symMethod.GetSequencePoints();
			
			// Get i for which: offsets[i] <= offset < offsets[i + 1]
			// or fallback to first element if  offset < offsets[0]
			for (int i = (int)sequencePointCount - 1; i >= 0; i--) { // backwards
				if ((int)sequencePoints[i].Offset <= offset || i == 0) {
					// Set inforamtion about current IL range
					int codeSize = (int)corFunction.GetILCode().GetSize();
					
					int ilStart = (int)sequencePoints[i].Offset;
					int ilEnd = (i + 1 < sequencePointCount) ? (int)sequencePoints[i+1].Offset : codeSize;
					
					// 0xFeeFee means "code generated by compiler"
					// If we are in generated sequence use to closest real one instead,
					// extend the ILStart and ILEnd to include the 'real' sequence
					
					// Look ahead for 'real' sequence
					while (i + 1 < sequencePointCount && sequencePoints[i].Line == 0xFeeFee) {
						i++;
						ilEnd = (i + 1 < sequencePointCount) ? (int)sequencePoints[i+1].Offset : codeSize;
					}
					// Look back for 'real' sequence
					while (i - 1 >= 0 && sequencePoints[i].Line == 0xFeeFee) {
						i--;
						ilStart = (int)sequencePoints[i].Offset;
					}
					// Wow, there are no 'real' sequences
					if (sequencePoints[i].Line == 0xFeeFee) {
						return null;
					}
					
					List<int> stepRanges = new List<int>();
					for (int j = 0; j < sequencePointCount; j++) {
						// Step over compiler generated sequences and current statement
						// 0xFeeFee means "code generated by compiler"
						if (sequencePoints[j].Line == 0xFeeFee || j == i) {
							// Add start offset or remove last end (to connect two ranges into one)
							if (stepRanges.Count > 0 && stepRanges[stepRanges.Count - 1] == sequencePoints[j].Offset) {
								stepRanges.RemoveAt(stepRanges.Count - 1);
							} else {
								stepRanges.Add((int)sequencePoints[j].Offset);
							}
							// Add end offset | handle last sequence point
							if (j + 1 < sequencePointCount) {
								stepRanges.Add((int)sequencePoints[j+1].Offset);
							} else {
								stepRanges.Add(codeSize);
							}
						}
					}
					
					SourcecodeSegment segment = new SourcecodeSegment();
					segment.module        = module;
					segment.filename      = GetFilenameFromSymDocument(module, sequencePoints[i].Document);
					segment.checkSum      = sequencePoints[i].Document.GetCheckSum();
					segment.startLine     = (int)sequencePoints[i].Line;
					segment.startColumn   = (int)sequencePoints[i].Column;
					segment.endLine       = (int)sequencePoints[i].EndLine;
					segment.endColumn     = (int)sequencePoints[i].EndColumn;
					segment.corFunction   = corFunction;
					segment.ilStart       = ilStart;
					segment.ilEnd         = ilEnd;
					segment.stepRanges    = stepRanges.ToArray();
					
					// VB.NET sometimes produces temporary files which it then deletes
					// (eg 17d14f5c-a337-4978-8281-53493378c1071.vb)
					string filename = Path.GetFileName(segment.filename);
					if (filename.Length == 40 && filename.EndsWith(".vb")) {
						bool guidName = true;
						foreach(char c in filename.Substring(0, filename.Length - 3)) {
							if (('0' <= c && c <= '9') ||
							    ('a' <= c && c <= 'f') ||
							    ('A' <= c && c <= 'F') ||
							    (c == '-'))
							{
								guidName = true;
							} else {
								guidName = false;
								break;
							}
//.........这里部分代码省略.........