public void TestIntrinsicFunctionOverloading(string function, string type1, string type2, string expectedMatchTypes)
{
var expressionCode = $"{function}(({type1}) 0, ({type2}) 0)";
var syntaxTree = SyntaxFactory.ParseExpression(expressionCode);
var syntaxTreeSource = syntaxTree.Root.ToFullString();
Assert.Equal(expressionCode, syntaxTreeSource);
var expression = (ExpressionSyntax)syntaxTree.Root;
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var combinedDiagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToList();
foreach (var d in combinedDiagnostics)
{
Debug.WriteLine(d);
}
var invokedFunctionSymbol = (FunctionSymbol)semanticModel.GetSymbol(expression);
var diagnostic = combinedDiagnostics.SingleOrDefault(x => x.Severity == DiagnosticSeverity.Error);
var result = diagnostic == null
? $"{invokedFunctionSymbol.Parameters[0].ValueType.ToMarkup()}, {invokedFunctionSymbol.Parameters[1].ValueType.ToMarkup()}"
: ExpressionTestUtility.GetErrorString((DiagnosticId)diagnostic.Descriptor.Code);
Assert.Equal(expectedMatchTypes, result);
}
public void TestBinaryOperatorTypeConversions(string opText, string leftText, string rightText, string expectedResult)
{
var left = ExpressionTestUtility.GetValue(leftText);
var right = ExpressionTestUtility.GetValue(rightText);
var source = $"{left} {opText} {right}";
var syntaxTree = SyntaxFactory.ParseExpression(source);
var syntaxTreeSource = syntaxTree.Root.ToString();
if (syntaxTreeSource != source)
Assert.Fail($"Source should have been {syntaxTreeSource} but is {source}");
var expression = (BinaryExpressionSyntax)syntaxTree.Root;
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var leftType = ExpressionTestUtility.GetExpressionTypeString(semanticModel.GetExpressionType(expression.Left));
if (leftText != leftType)
Assert.Fail($"Left should be of type '{leftText}' but has type '{leftType}'");
var rightType = ExpressionTestUtility.GetExpressionTypeString(semanticModel.GetExpressionType(expression.Right));
if (rightText != rightType)
Assert.Fail($"Right should be of type '{rightText}' but has type '{rightType}'");
var diagnostic = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).SingleOrDefault();
var expressionType = semanticModel.GetExpressionType(expression);
var result = diagnostic == null
? ExpressionTestUtility.GetExpressionTypeString(expressionType)
: ExpressionTestUtility.GetErrorString(diagnostic.DiagnosticId);
Assert.AreEqual(expectedResult, result, $"Expression {source} should have evaluated to '{expectedResult}' but was '{result}'");
}
public void SemanticModelForTypedef()
{
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(@"
typedef float2 Point;
Point p;"));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
foreach (var diagnostic in semanticModel.GetDiagnostics())
{
Debug.WriteLine(diagnostic);
}
Assert.Equal(0, semanticModel.GetDiagnostics().Count(x => x.Severity == DiagnosticSeverity.Error));
var typedefStatement = (TypedefStatementSyntax)syntaxTree.Root.ChildNodes[0];
var variableDeclaration = (VariableDeclarationStatementSyntax)syntaxTree.Root.ChildNodes[1];
var typeAliasSymbol = semanticModel.GetDeclaredSymbol(typedefStatement.Declarators[0]);
Assert.NotNull(typeAliasSymbol);
Assert.Equal("Point", typeAliasSymbol.Name);
var variableSymbol = semanticModel.GetDeclaredSymbol(variableDeclaration.Declaration.Variables[0]);
Assert.NotNull(variableSymbol);
Assert.Equal("p", variableSymbol.Name);
Assert.NotNull(variableSymbol.ValueType);
Assert.Equal(typeAliasSymbol, variableSymbol.ValueType);
}
public void TestBinaryOperatorTypeConversions(string opText, string leftText, string rightText, string expectedResult)
{
var left = ExpressionTestUtility.GetValue(leftText);
var right = ExpressionTestUtility.GetValue(rightText);
var source = $"{left} {opText} {right}";
var syntaxTree = SyntaxFactory.ParseExpression(source);
var syntaxTreeSource = syntaxTree.Root.ToString();
Assert.Equal(source, syntaxTreeSource);
var expression = (BinaryExpressionSyntax)syntaxTree.Root;
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var leftType = ExpressionTestUtility.GetExpressionTypeString(semanticModel.GetExpressionType(expression.Left));
Assert.Equal(leftText, leftType);
var rightType = ExpressionTestUtility.GetExpressionTypeString(semanticModel.GetExpressionType(expression.Right));
Assert.Equal(rightText, rightType);
var diagnostic = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).SingleOrDefault();
var expressionType = semanticModel.GetExpressionType(expression);
var result = diagnostic == null
? ExpressionTestUtility.GetExpressionTypeString(expressionType)
: ExpressionTestUtility.GetErrorString((DiagnosticId)diagnostic.Descriptor.Code);
Assert.Equal(expectedResult, result);
}
public void AllowsMissingFunctionImplementationIfUnused()
{
var code = @"void foo();";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var diagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToImmutableArray();
Assert.Empty(diagnostics);
}
public void AllowsMissingFunctionImplementationIfUnused()
{
var code = @"void foo();";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var diagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToImmutableArray();
Assert.That(diagnostics, Is.Empty);
}
public void DetectsRedefinitionAsFunction()
{
var code = @"
struct foo {};
void foo();";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var diagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToImmutableArray();
Assert.That(diagnostics, Has.Length.EqualTo(1));
Assert.That(diagnostics[0].DiagnosticId, Is.EqualTo(DiagnosticId.SymbolRedefined));
}
public void DetectsFunctionRedefinition()
{
var code = @"
void foo() {}
void foo() {}";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var diagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToImmutableArray();
Assert.Equal(1, diagnostics.Length);
Assert.Equal(DiagnosticId.SymbolRedefined, (DiagnosticId)diagnostics[0].Descriptor.Code);
}
public void DetectsUndeclaredVariable()
{
var code = @"
void main()
{
int foo = a;
}";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var diagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToImmutableArray();
Assert.That(diagnostics, Has.Length.EqualTo(1));
Assert.That(diagnostics[0].DiagnosticId, Is.EqualTo(DiagnosticId.UndeclaredVariable));
}
public void DetectsUndeclaredVariable()
{
var code = @"
void main()
{
int foo = a;
}";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var diagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToImmutableArray();
Assert.Equal(1, diagnostics.Length);
Assert.Equal(DiagnosticId.UndeclaredVariable, (DiagnosticId)diagnostics[0].Descriptor.Code);
}
public void TestFunctionOverloadResolution2Args(string type1, string type2, string expectedMatchTypes)
{
var code = $@"
int foo(int x, float y) {{ return 1; }}
int foo(float x, float y) {{ return 2; }}
int foo(double x, float y) {{ return 3; }}
int foo(float x, int y) {{ return 4; }}
int foo(float x, double y) {{ return 5; }}
int foo(double x, int y) {{ return 6; }}
int foo(int2 x, float y) {{ return 7; }}
int foo(float2 x, float y) {{ return 8; }}
int foo(double2 x, float y) {{ return 9; }}
int foo(float3x3 x, float y) {{ return 10; }}
void main()
{{
foo({ExpressionTestUtility.GetValue(type1)}, {ExpressionTestUtility.GetValue(type2)});
}}";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var syntaxTreeSource = syntaxTree.Root.ToFullString();
Assert.Equal(code, syntaxTreeSource);
var expression = (FunctionInvocationExpressionSyntax)syntaxTree.Root.ChildNodes
.OfType <FunctionDefinitionSyntax>()
.Where(x => x.Name.GetName() == "main")
.Select(x => ((ExpressionStatementSyntax)x.Body.Statements[0]).Expression)
.First();
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var combinedDiagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToList();
foreach (var d in combinedDiagnostics)
{
Debug.WriteLine(d);
}
var invokedFunctionSymbol = (FunctionSymbol)semanticModel.GetSymbol(expression);
var diagnostic = combinedDiagnostics.SingleOrDefault(x => x.Severity == DiagnosticSeverity.Error);
var result = diagnostic == null
? $"{invokedFunctionSymbol.Parameters[0].ValueType.ToMarkup()}, {invokedFunctionSymbol.Parameters[1].ValueType.ToMarkup()}"
: ExpressionTestUtility.GetErrorString((DiagnosticId)diagnostic.Descriptor.Code);
Assert.Equal(expectedMatchTypes, result);
}
public void SemanticModelForStructAndFunction()
{
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(@"
struct MyStruct
{
float a;
int b;
};
void MyFunc()
{
MyStruct s;
s.a = 1.0;
}"));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var structDefinition = (TypeDeclarationStatementSyntax)syntaxTree.Root.ChildNodes[0];
var functionDefinition = (FunctionDefinitionSyntax)syntaxTree.Root.ChildNodes[1];
var variableDeclaration = (VariableDeclarationStatementSyntax)functionDefinition.Body.Statements[0];
var assignmentStatement = (ExpressionStatementSyntax)functionDefinition.Body.Statements[1];
var structSymbol = semanticModel.GetDeclaredSymbol((StructTypeSyntax)structDefinition.Type);
Assert.NotNull(structSymbol);
Assert.Equal("MyStruct", structSymbol.Name);
Assert.Equal(2, structSymbol.Members.Length);
var functionSymbol = semanticModel.GetDeclaredSymbol(functionDefinition);
Assert.NotNull(functionSymbol);
Assert.Equal("MyFunc", functionSymbol.Name);
Assert.Equal(IntrinsicTypes.Void, functionSymbol.ReturnType);
var variableSymbol = semanticModel.GetDeclaredSymbol(variableDeclaration.Declaration.Variables[0]);
Assert.NotNull(variableSymbol);
Assert.Equal("s", variableSymbol.Name);
Assert.NotNull(variableSymbol.ValueType);
Assert.Equal(structSymbol, variableSymbol.ValueType);
var assignmentExpressionType = semanticModel.GetExpressionType(assignmentStatement.Expression);
Assert.NotNull(assignmentExpressionType);
Assert.Equal(IntrinsicTypes.Float, assignmentExpressionType);
}
public void DetectsMissingFunctionImplementation()
{
var code = @"
void foo();
void main()
{
foo();
}";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var diagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToImmutableArray();
Assert.That(diagnostics, Has.Length.EqualTo(1));
Assert.That(diagnostics[0].DiagnosticId, Is.EqualTo(DiagnosticId.FunctionMissingImplementation));
}
public void CanGetSemanticModel(string testFile)
{
var sourceCode = File.ReadAllText(testFile);
// Build syntax tree.
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(sourceCode), fileSystem: new TestFileSystem(testFile));
ShaderTestUtility.CheckForParseErrors(syntaxTree);
// Get semantic model.
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
Assert.That(semanticModel, Is.Not.Null);
foreach (var diagnostic in semanticModel.GetDiagnostics())
Debug.WriteLine(diagnostic);
Assert.That(semanticModel.GetDiagnostics().Count(x => x.Severity == DiagnosticSeverity.Error), Is.EqualTo(0));
}
public void SemanticModelForStructAndFunction()
{
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(@"
struct MyStruct
{
float a;
int b;
};
void MyFunc()
{
MyStruct s;
s.a = 1.0;
}"));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var structDefinition = (TypeDeclarationStatementSyntax) syntaxTree.Root.ChildNodes[0];
var functionDefinition = (FunctionDefinitionSyntax) syntaxTree.Root.ChildNodes[1];
var variableDeclaration = (VariableDeclarationStatementSyntax) functionDefinition.Body.Statements[0];
var assignmentStatement = (ExpressionStatementSyntax) functionDefinition.Body.Statements[1];
var structSymbol = semanticModel.GetDeclaredSymbol((StructTypeSyntax) structDefinition.Type);
Assert.That(structSymbol, Is.Not.Null);
Assert.That(structSymbol.Name, Is.EqualTo("MyStruct"));
Assert.That(structSymbol.Members, Has.Length.EqualTo(2));
var functionSymbol = semanticModel.GetDeclaredSymbol(functionDefinition);
Assert.That(functionSymbol, Is.Not.Null);
Assert.That(functionSymbol.Name, Is.EqualTo("MyFunc"));
Assert.That(functionSymbol.ReturnType, Is.EqualTo(IntrinsicTypes.Void));
var variableSymbol = semanticModel.GetDeclaredSymbol(variableDeclaration.Declaration.Variables[0]);
Assert.That(variableSymbol, Is.Not.Null);
Assert.That(variableSymbol.Name, Is.EqualTo("s"));
Assert.That(variableSymbol.ValueType, Is.Not.Null);
Assert.That(variableSymbol.ValueType, Is.EqualTo(structSymbol));
var assignmentExpressionType = semanticModel.GetExpressionType(assignmentStatement.Expression);
Assert.That(assignmentExpressionType, Is.Not.Null);
Assert.That(assignmentExpressionType, Is.EqualTo(IntrinsicTypes.Float));
}
public void TestFunctionOverloadResolution1Arg(string type, string expectedMatchType)
{
var code = $@"
struct MyStruct {{}};
int foo(int x) {{ return 1; }}
int foo(float x) {{ return 2; }}
int foo(double x) {{ return 3; }}
int foo(int2 x) {{ return 4; }}
int foo(float2 x) {{ return 5; }}
int foo(double2 x) {{ return 6; }}
int foo(float3x3 x) {{ return 7; }}
void main()
{{
foo(({type}) 0);
}}";
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(code));
var syntaxTreeSource = syntaxTree.Root.ToFullString();
Assert.AreEqual(code, syntaxTreeSource, $"Source should have been {code} but is {syntaxTreeSource}.");
var expression = (FunctionInvocationExpressionSyntax) syntaxTree.Root.ChildNodes
.OfType<FunctionDefinitionSyntax>()
.Where(x => x.Name.GetName() == "main")
.Select(x => ((ExpressionStatementSyntax) x.Body.Statements[0]).Expression)
.First();
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var combinedDiagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToList();
foreach (var d in combinedDiagnostics)
Debug.WriteLine(d);
var invokedFunctionSymbol = (FunctionSymbol) semanticModel.GetSymbol(expression);
var diagnostic = combinedDiagnostics.SingleOrDefault(x => x.Severity == DiagnosticSeverity.Error);
var result = diagnostic == null
? ExpressionTestUtility.GetExpressionTypeString(invokedFunctionSymbol.Parameters[0].ValueType)
: ExpressionTestUtility.GetErrorString(diagnostic.DiagnosticId);
Assert.AreEqual(expectedMatchType, result, $"Expression should have matched the function overload '{expectedMatchType}' but it actually matched '{result}'.");
}
public void CanGetSemanticModel(string testFile)
{
var sourceCode = File.ReadAllText(testFile);
// Build syntax tree.
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(sourceCode, testFile), fileSystem: new TestFileSystem());
ShaderTestUtility.CheckForParseErrors(syntaxTree);
// Get semantic model.
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
Assert.NotNull(semanticModel);
foreach (var diagnostic in semanticModel.GetDiagnostics())
{
Debug.WriteLine(diagnostic);
}
Assert.Equal(0, semanticModel.GetDiagnostics().Count(x => x.Severity == DiagnosticSeverity.Error));
}
public void SemanticModelForTypedef()
{
var syntaxTree = SyntaxFactory.ParseSyntaxTree(SourceText.From(@"
typedef float2 Point;
Point p;"));
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
foreach (var diagnostic in semanticModel.GetDiagnostics())
Debug.WriteLine(diagnostic);
Assert.That(semanticModel.GetDiagnostics().Count(x => x.Severity == DiagnosticSeverity.Error), Is.EqualTo(0));
var typedefStatement = (TypedefStatementSyntax) syntaxTree.Root.ChildNodes[0];
var variableDeclaration = (VariableDeclarationStatementSyntax) syntaxTree.Root.ChildNodes[1];
var typeAliasSymbol = semanticModel.GetDeclaredSymbol(typedefStatement.Declarators[0]);
Assert.That(typeAliasSymbol, Is.Not.Null);
Assert.That(typeAliasSymbol.Name, Is.EqualTo("Point"));
var variableSymbol = semanticModel.GetDeclaredSymbol(variableDeclaration.Declaration.Variables[0]);
Assert.That(variableSymbol, Is.Not.Null);
Assert.That(variableSymbol.Name, Is.EqualTo("p"));
Assert.That(variableSymbol.ValueType, Is.Not.Null);
Assert.That(variableSymbol.ValueType, Is.EqualTo(typeAliasSymbol));
}
public void TestIntrinsicFunctionOverloading(string function, string type1, string type2, string expectedMatchTypes)
{
var expressionCode = $"{function}(({type1}) 0, ({type2}) 0)";
var syntaxTree = SyntaxFactory.ParseExpression(expressionCode);
var syntaxTreeSource = syntaxTree.Root.ToFullString();
Assert.AreEqual(expressionCode, syntaxTreeSource, $"Source should have been {expressionCode} but is {syntaxTreeSource}.");
var expression = (ExpressionSyntax) syntaxTree.Root;
var compilation = new ShaderTools.Hlsl.Compilation.Compilation(syntaxTree);
var semanticModel = compilation.GetSemanticModel();
var combinedDiagnostics = syntaxTree.GetDiagnostics().Concat(semanticModel.GetDiagnostics()).ToList();
foreach (var d in combinedDiagnostics)
Debug.WriteLine(d);
var invokedFunctionSymbol = (FunctionSymbol) semanticModel.GetSymbol(expression);
var diagnostic = combinedDiagnostics.SingleOrDefault(x => x.Severity == DiagnosticSeverity.Error);
var result = diagnostic == null
? $"{SymbolMarkup.ForSymbol(invokedFunctionSymbol.Parameters[0].ValueType)}, {SymbolMarkup.ForSymbol(invokedFunctionSymbol.Parameters[1].ValueType)}"
: ExpressionTestUtility.GetErrorString(diagnostic.DiagnosticId);
Assert.AreEqual(expectedMatchTypes, result, $"Expression should have matched the function overload '{expectedMatchTypes}' but it actually matched '{result}'.");
}