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Use a fixed list of operations in ReflectionGraphicsStateOperationFac… (#832)
* Use a fixed list of operations in ReflectionGraphicsStateOperationFactory rather than searching via reflection. * Add a unit test to check that ReflectionGraphicsStateOperationFactory.operations contains all supported graphics operations
This commit is contained in:
Richard Webb
GitHub
parent
5a8e6179da
commit
d86c2f44f0
@ -4,6 +4,7 @@
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using PdfPig.Graphics.Operations;
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using PdfPig.Graphics.Operations.InlineImages;
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using PdfPig.Tokens;
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using UglyToad.PdfPig.Graphics;
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public class GraphicsStateOperationTests
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{
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@ -63,6 +64,26 @@
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}
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}
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// Test that ReflectionGraphicsStateOperationFactory.operations contains all supported graphics operations
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[Fact]
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public void ReflectionGraphicsStateOperationFactoryKnowsAllOperations()
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{
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var operationsField = typeof(ReflectionGraphicsStateOperationFactory).GetField("operations", BindingFlags.NonPublic | BindingFlags.Static);
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var operationDictionary = operationsField.GetValue(null) as IReadOnlyDictionary<string, Type>;
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Assert.NotNull(operationDictionary);
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var allOperations = GetOperationTypes();
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Assert.Equal(allOperations.Count(), operationDictionary.Count);
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var mapped = allOperations.Select(o =>
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{
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var symbol = o.GetField("Symbol").GetValue(null)!.ToString()!;
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return new KeyValuePair<string, Type>(symbol, o);
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});
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Assert.Equivalent(operationDictionary, mapped, strict: true);
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}
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private static IEnumerable<Type> GetOperationTypes()
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{
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var assembly = Assembly.GetAssembly(typeof(IGraphicsStateOperation));
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@ -1,5 +1,3 @@
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using UglyToad.PdfPig.Tokenization;
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namespace UglyToad.PdfPig.Graphics
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{
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using Operations;
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@ -9,6 +7,7 @@ namespace UglyToad.PdfPig.Graphics
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using Operations.InlineImages;
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using Operations.MarkedContent;
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using Operations.PathConstruction;
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using Operations.PathPainting;
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using Operations.SpecialGraphicsState;
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using Operations.TextObjects;
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using Operations.TextPositioning;
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@ -16,41 +15,97 @@ namespace UglyToad.PdfPig.Graphics
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using Operations.TextState;
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using PdfPig.Core;
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using System;
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#if NET8_0_OR_GREATER
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using System.Collections.Frozen;
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#endif
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using Tokens;
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using Operations.PathPainting;
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internal class ReflectionGraphicsStateOperationFactory : IGraphicsStateOperationFactory
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internal sealed class ReflectionGraphicsStateOperationFactory : IGraphicsStateOperationFactory
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{
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private readonly IReadOnlyDictionary<string, Type> operations;
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public ReflectionGraphicsStateOperationFactory()
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{
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var assemblyTypes = Assembly.GetAssembly(typeof(ReflectionGraphicsStateOperationFactory))!.GetTypes();
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var result = new Dictionary<string, Type>();
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foreach (var assemblyType in assemblyTypes)
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private static readonly IReadOnlyDictionary<string, Type> operations =
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new Dictionary<string, Type>
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{
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if (!assemblyType.IsInterface && typeof(IGraphicsStateOperation).IsAssignableFrom(assemblyType))
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{
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var symbol = assemblyType.GetField("Symbol");
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if (symbol is null)
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{
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throw new InvalidOperationException("An operation type was defined without the public const Symbol being declared. Type was: " + assemblyType.FullName);
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}
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var value = symbol.GetValue(null)!.ToString()!;
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result[value] = assemblyType;
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}
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{ SetStrokeColorAdvanced.Symbol, typeof(SetStrokeColorAdvanced) },
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{ SetStrokeColorSpace.Symbol, typeof(SetStrokeColorSpace) },
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{ SetCharacterSpacing.Symbol, typeof(SetCharacterSpacing) },
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{ ModifyCurrentTransformationMatrix.Symbol, typeof(ModifyCurrentTransformationMatrix) },
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{ SetStrokeColorDeviceCmyk.Symbol, typeof(SetStrokeColorDeviceCmyk) },
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{ EndCompatibilitySection.Symbol, typeof(EndCompatibilitySection) },
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{ CloseFillPathEvenOddRuleAndStroke.Symbol, typeof(CloseFillPathEvenOddRuleAndStroke) },
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{ SetStrokeColor.Symbol, typeof(SetStrokeColor) },
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{ SetLineDashPattern.Symbol, typeof(SetLineDashPattern) },
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{ DesignateMarkedContentPointWithProperties.Symbol, typeof(DesignateMarkedContentPointWithProperties) },
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{ SetStrokeColorDeviceRgb.Symbol, typeof(SetStrokeColorDeviceRgb) },
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{ BeginMarkedContent.Symbol, typeof(BeginMarkedContent) },
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{ BeginNewSubpath.Symbol, typeof(BeginNewSubpath) },
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{ EndMarkedContent.Symbol, typeof(EndMarkedContent) },
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{ SetNonStrokeColorDeviceCmyk.Symbol, typeof(SetNonStrokeColorDeviceCmyk) },
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{ InvokeNamedXObject.Symbol, typeof(InvokeNamedXObject) },
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{ EndPath.Symbol, typeof(EndPath) },
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{ SetGraphicsStateParametersFromDictionary.Symbol, typeof(SetGraphicsStateParametersFromDictionary) },
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{ FillPathEvenOddRule.Symbol, typeof(FillPathEvenOddRule) },
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{ Type3SetGlyphWidth.Symbol, typeof(Type3SetGlyphWidth) },
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{ Push.Symbol, typeof(Push) },
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{ Pop.Symbol, typeof(Pop) },
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{ DesignateMarkedContentPoint.Symbol, typeof(DesignateMarkedContentPoint) },
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{ SetNonStrokeColorAdvanced.Symbol, typeof(SetNonStrokeColorAdvanced) },
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{ MoveToNextLineShowTextWithSpacing.Symbol, typeof(MoveToNextLineShowTextWithSpacing) },
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{ SetHorizontalScaling.Symbol, typeof(SetHorizontalScaling) },
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{ BeginCompatibilitySection.Symbol, typeof(BeginCompatibilitySection) },
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{ SetFlatnessTolerance.Symbol, typeof(SetFlatnessTolerance) },
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{ EndInlineImage.Symbol, typeof(EndInlineImage) },
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{ MoveToNextLineWithOffset.Symbol, typeof(MoveToNextLineWithOffset) },
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{ SetTextLeading.Symbol, typeof(SetTextLeading) },
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{ BeginText.Symbol, typeof(BeginText) },
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{ BeginMarkedContentWithProperties.Symbol, typeof(BeginMarkedContentWithProperties) },
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{ AppendDualControlPointBezierCurve.Symbol, typeof(AppendDualControlPointBezierCurve) },
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{ CloseFillPathNonZeroWindingAndStroke.Symbol, typeof(CloseFillPathNonZeroWindingAndStroke) },
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{ StrokePath.Symbol, typeof(StrokePath) },
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{ MoveToNextLine.Symbol, typeof(MoveToNextLine) },
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{ ShowText.Symbol, typeof(ShowText) },
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{ FillPathNonZeroWindingAndStroke.Symbol, typeof(FillPathNonZeroWindingAndStroke) },
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{ AppendEndControlPointBezierCurve.Symbol, typeof(AppendEndControlPointBezierCurve) },
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{ AppendStartControlPointBezierCurve.Symbol, typeof(AppendStartControlPointBezierCurve) },
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{ SetNonStrokeColor.Symbol, typeof(SetNonStrokeColor) },
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{ CloseAndStrokePath.Symbol, typeof(CloseAndStrokePath) },
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{ BeginInlineImageData.Symbol, typeof(BeginInlineImageData) },
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{ ModifyClippingByNonZeroWindingIntersect.Symbol, typeof(ModifyClippingByNonZeroWindingIntersect) },
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{ MoveToNextLineShowText.Symbol, typeof(MoveToNextLineShowText) },
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{ SetLineCap.Symbol, typeof(SetLineCap) },
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{ FillPathNonZeroWinding.Symbol, typeof(FillPathNonZeroWinding) },
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{ FillPathEvenOddRuleAndStroke.Symbol, typeof(FillPathEvenOddRuleAndStroke) },
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{ SetFontAndSize.Symbol, typeof(SetFontAndSize) },
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{ SetColorRenderingIntent.Symbol, typeof(SetColorRenderingIntent) },
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{ PaintShading.Symbol, typeof(PaintShading) },
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{ SetMiterLimit.Symbol, typeof(SetMiterLimit) },
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{ AppendRectangle.Symbol, typeof(AppendRectangle) },
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{ SetNonStrokeColorSpace.Symbol, typeof(SetNonStrokeColorSpace) },
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{ MoveToNextLineWithOffsetSetLeading.Symbol, typeof(MoveToNextLineWithOffsetSetLeading) },
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{ CloseSubpath.Symbol, typeof(CloseSubpath) },
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{ SetStrokeColorDeviceGray.Symbol, typeof(SetStrokeColorDeviceGray) },
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{ SetWordSpacing.Symbol, typeof(SetWordSpacing) },
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{ BeginInlineImage.Symbol, typeof(BeginInlineImage) },
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{ SetNonStrokeColorDeviceRgb.Symbol, typeof(SetNonStrokeColorDeviceRgb) },
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{ SetTextMatrix.Symbol, typeof(SetTextMatrix) },
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{ SetTextRise.Symbol, typeof(SetTextRise) },
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{ Type3SetGlyphWidthAndBoundingBox.Symbol, typeof(Type3SetGlyphWidthAndBoundingBox) },
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{ ModifyClippingByEvenOddIntersect.Symbol, typeof(ModifyClippingByEvenOddIntersect) },
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{ AppendStraightLineSegment.Symbol, typeof(AppendStraightLineSegment) },
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{ EndText.Symbol, typeof(EndText) },
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{ FillPathNonZeroWindingCompatibility.Symbol, typeof(FillPathNonZeroWindingCompatibility) },
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{ ShowTextsWithPositioning.Symbol, typeof(ShowTextsWithPositioning) },
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{ SetLineJoin.Symbol, typeof(SetLineJoin) },
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{ SetLineWidth.Symbol, typeof(SetLineWidth) },
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{ SetNonStrokeColorDeviceGray.Symbol, typeof(SetNonStrokeColorDeviceGray) },
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{ SetTextRenderingMode.Symbol, typeof(SetTextRenderingMode) },
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}
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operations = result;
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}
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#if NET8_0_OR_GREATER
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.ToFrozenDictionary()
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#endif
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;
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private static double[] TokensToDoubleArray(IReadOnlyList<IToken> tokens, bool exceptLast = false)
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{
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