public static DiagnosticAnalyzerCategory GetDiagnosticAnalyzerCategory(this DiagnosticAnalyzer analyzer, DiagnosticAnalyzerDriver driver)
{
var category = DiagnosticAnalyzerCategory.None;
if (analyzer is DocumentDiagnosticAnalyzer)
{
category |= DiagnosticAnalyzerCategory.SyntaxAnalysis | DiagnosticAnalyzerCategory.SemanticDocumentAnalysis;
}
else if (analyzer is ProjectDiagnosticAnalyzer)
{
category |= DiagnosticAnalyzerCategory.ProjectAnalysis;
}
else if (driver != null)
{
// If an analyzer requires or might require the entire document, then it cannot promise
// to be able to operate on a limited span of the document. In practical terms, no analyzer
// can have both SemanticDocumentAnalysis and SemanticSpanAnalysis as categories.
bool cantSupportSemanticSpanAnalysis = false;
var analyzerActions = driver.GetAnalyzerActionsAsync(analyzer).WaitAndGetResult(driver.CancellationToken);
if (analyzerActions != null)
{
if (analyzerActions.SyntaxTreeActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.SyntaxAnalysis;
}
if (analyzerActions.SemanticModelActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.SemanticDocumentAnalysis;
cantSupportSemanticSpanAnalysis = true;
}
if (analyzerActions.CompilationStartActionsCount > 0)
{
// It is not possible to know what actions a compilation start action will register without executing it,
// so return a worst-case categorization.
category |= DiagnosticAnalyzerCategory.SyntaxAnalysis | DiagnosticAnalyzerCategory.SemanticDocumentAnalysis | DiagnosticAnalyzerCategory.ProjectAnalysis;
cantSupportSemanticSpanAnalysis = true;
}
if (analyzerActions.CompilationEndActionsCount > 0 || analyzerActions.CompilationActionsCount > 0 || analyzerActions.CompilationStartActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.ProjectAnalysis;
}
if (!cantSupportSemanticSpanAnalysis)
{
if (analyzerActions.SymbolActionsCount > 0 ||
analyzerActions.CodeBlockStartActionsCount > 0 ||
analyzerActions.CodeBlockEndActionsCount > 0 ||
analyzerActions.SyntaxNodeActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.SemanticSpanAnalysis;
}
}
}
}
return(category);
}
public static async Task <DiagnosticAnalyzerCategory> GetDiagnosticAnalyzerCategoryAsync(this DiagnosticAnalyzer analyzer, DiagnosticAnalyzerDriver driver)
{
var category = DiagnosticAnalyzerCategory.None;
if (analyzer is DocumentDiagnosticAnalyzer)
{
category |= DiagnosticAnalyzerCategory.SyntaxAnalysis | DiagnosticAnalyzerCategory.SemanticDocumentAnalysis;
}
else if (analyzer is ProjectDiagnosticAnalyzer)
{
category |= DiagnosticAnalyzerCategory.ProjectAnalysis;
}
else if (driver != null)
{
// If an analyzer requires or might require the entire document, then it cannot promise
// to be able to operate on a limited span of the document. In practical terms, no analyzer
// can have both SemanticDocumentAnalysis and SemanticSpanAnalysis as categories.
bool cantSupportSemanticSpanAnalysis = false;
var analyzerActions = await driver.GetAnalyzerActionsAsync(analyzer).ConfigureAwait(false);
if (analyzerActions != null)
{
if (analyzerActions.SyntaxTreeActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.SyntaxAnalysis;
}
if (analyzerActions.SemanticModelActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.SemanticDocumentAnalysis;
cantSupportSemanticSpanAnalysis = true;
}
if (analyzerActions.CompilationStartActionsCount > 0)
{
// It is not possible to know what actions a compilation start action will register without executing it,
// so return a worst-case categorization.
category |= (DiagnosticAnalyzerCategory.SyntaxAnalysis | DiagnosticAnalyzerCategory.SemanticDocumentAnalysis | DiagnosticAnalyzerCategory.ProjectAnalysis);
cantSupportSemanticSpanAnalysis = true;
}
if (analyzerActions.CompilationActionsCount > 0 || analyzerActions.CompilationStartActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.ProjectAnalysis;
}
if (HasSemanticDocumentActions(analyzerActions))
{
var semanticDocumentAnalysisCategory = cantSupportSemanticSpanAnalysis ?
DiagnosticAnalyzerCategory.SemanticDocumentAnalysis :
DiagnosticAnalyzerCategory.SemanticSpanAnalysis;
category |= semanticDocumentAnalysisCategory;
}
}
}
return(category);
}
public static async Task<DiagnosticAnalyzerCategory> GetDiagnosticAnalyzerCategoryAsync(this DiagnosticAnalyzer analyzer, DiagnosticAnalyzerDriver driver)
{
var category = DiagnosticAnalyzerCategory.None;
if (analyzer is DocumentDiagnosticAnalyzer)
{
category |= DiagnosticAnalyzerCategory.SyntaxAnalysis | DiagnosticAnalyzerCategory.SemanticDocumentAnalysis;
}
else if (analyzer is ProjectDiagnosticAnalyzer)
{
category |= DiagnosticAnalyzerCategory.ProjectAnalysis;
}
else if (driver != null)
{
// If an analyzer requires or might require the entire document, then it cannot promise
// to be able to operate on a limited span of the document. In practical terms, no analyzer
// can have both SemanticDocumentAnalysis and SemanticSpanAnalysis as categories.
bool cantSupportSemanticSpanAnalysis = false;
var analyzerActions = await driver.GetAnalyzerActionsAsync(analyzer).ConfigureAwait(false);
if (analyzerActions != null)
{
if (analyzerActions.SyntaxTreeActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.SyntaxAnalysis;
}
if (analyzerActions.SemanticModelActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.SemanticDocumentAnalysis;
cantSupportSemanticSpanAnalysis = true;
}
if (analyzerActions.CompilationStartActionsCount > 0)
{
// It is not possible to know what actions a compilation start action will register without executing it,
// so return a worst-case categorization.
category |= (DiagnosticAnalyzerCategory.SyntaxAnalysis | DiagnosticAnalyzerCategory.SemanticDocumentAnalysis | DiagnosticAnalyzerCategory.ProjectAnalysis);
cantSupportSemanticSpanAnalysis = true;
}
if (analyzerActions.CompilationActionsCount > 0 || analyzerActions.CompilationStartActionsCount > 0)
{
category |= DiagnosticAnalyzerCategory.ProjectAnalysis;
}
if (HasSemanticDocumentActions(analyzerActions))
{
var semanticDocumentAnalysisCategory = cantSupportSemanticSpanAnalysis ?
DiagnosticAnalyzerCategory.SemanticDocumentAnalysis :
DiagnosticAnalyzerCategory.SemanticSpanAnalysis;
category |= semanticDocumentAnalysisCategory;
}
}
}
return category;
}