/// <summary>
/// Initializes a new instance of the CodeParser class.
/// </summary>
/// <param name="languageService">The C# language service.</param>
/// <param name="document">The document being parsed.</param>
/// <param name="symbols">The symbols in the document to parse.</param>
/// <param name="preprocessorDefinitions">The optional preprocessor flags.</param>
public CodeParser(CsLanguageService languageService, CsDocument document, SymbolManager symbols, IDictionary<string, object> preprocessorDefinitions)
{
Param.AssertNotNull(languageService, "languageService");
Param.AssertNotNull(document, "document");
Param.AssertNotNull(symbols, "symbols");
Param.Ignore(preprocessorDefinitions);
this.languageService = languageService;
this.document = document;
this.symbols = symbols;
this.preprocessorDefinitions = preprocessorDefinitions;
}
/// <summary>
/// Extracts the body of the given preprocessor directive symbol, parses it, and returns the parsed expression.
/// </summary>
/// <param name="document">The parent document.</param>
/// <param name="code">The source code.</param>
/// <param name="parentProxy">Represents the parent item.</param>
/// <param name="languageService">The C# language service.</param>
/// <param name="preprocessorDefinitions">Optional preprocessor definitions.</param>
/// <param name="preprocessorSymbol">The preprocessor directive symbol.</param>
/// <param name="startIndex">The index of the start of the expression body within the text string.</param>
/// <returns>Returns the expression.</returns>
internal static Expression GetConditionalPreprocessorBodyExpression(
CsDocument document,
Code code,
CodeUnitProxy parentProxy,
CsLanguageService languageService,
IDictionary<string, object> preprocessorDefinitions,
Symbol preprocessorSymbol,
int startIndex)
{
Param.AssertNotNull(document, "document");
Param.AssertNotNull(code, "code");
Param.AssertNotNull(parentProxy, "parentProxy");
Param.AssertNotNull(languageService, "languageService");
Param.Ignore(preprocessorDefinitions);
Param.AssertNotNull(preprocessorSymbol, "preprocessorSymbol");
Param.AssertGreaterThanOrEqualToZero(startIndex, "startIndex");
CsLanguageService.Debug.Assert(preprocessorSymbol.SymbolType == SymbolType.PreprocessorDirective, "The symbol is not a preprocessor directive.");
string text = preprocessorSymbol.Text.Substring(startIndex, preprocessorSymbol.Text.Length - startIndex).TrimEnd(null);
if (text.Length > 0)
{
// Trim off the whitespace at the beginning and advance the start index.
int trimIndex = 0;
for (int i = 0; i < text.Length; ++i)
{
if (char.IsWhiteSpace(text[i]))
{
++trimIndex;
}
else
{
break;
}
}
if (trimIndex > 0)
{
text = text.Substring(trimIndex, text.Length - trimIndex);
startIndex += trimIndex;
}
if (text.Length > 0)
{
// Extract the symbols within this text.
Code preprocessorCode = new Code(text, "Preprocessor", "Preprocessor");
var lexer = new CodeLexer(
languageService,
preprocessorCode,
new CodeReader(preprocessorCode),
preprocessorSymbol.Location.StartPoint.Index + startIndex,
preprocessorSymbol.Location.StartPoint.IndexOnLine + startIndex,
preprocessorSymbol.Location.StartPoint.LineNumber);
List<Symbol> symbolList = lexer.GetSymbols(document, null);
var directiveSymbols = new SymbolManager(symbolList);
var preprocessorBodyParser = new CodeParser(languageService, document, directiveSymbols, preprocessorDefinitions);
// Parse these symbols to create the body expression.
return preprocessorBodyParser.GetNextConditionalPreprocessorExpression(document, parentProxy);
}
}
// The directive has no body.
return null;
}
/// <summary>
/// Parses the contents of the document.
/// </summary>
internal void ParseCodeModel()
{
CsLanguageService.Debug.Assert(this.document == null, "This method is only designed to be called once.");
// The parent reference to the document.
var codeModelProxy = new CodeUnitProxy(null);
// Create the document object.
this.document = new CsDocument(codeModelProxy, this.lexer.SourceCode.Name, this.lexer.SourceCode.Path, this.languageService.PartialElementService);
// Find the list of symbols in the document.
List<Symbol> symbolList = this.lexer.GetSymbols(
this.document, this.preprocessorDefinitions);
// Create the symbol manager class.
this.symbols = new SymbolManager(symbolList);
// Get the file header if it exists.
FileHeader fileHeader = this.GetFileHeader(codeModelProxy);
// Let the symbol manager know if this document contains generated code.
if (fileHeader.Generated)
{
this.symbols.IncrementGeneratedCodeBlocks();
}
// Parse the contents of the document.
this.ParseElementContainerBody(codeModelProxy, this.document, false);
// Perform a debug check to ensure that all code unit references have been set.
ValidateCodeUnitReferences(this.document);
}
/// <summary>
/// Extracts the body of the given preprocessor directive symbol, parses it, and returns the parsed expression.
/// </summary>
/// <param name="document">The parent document.</param>
/// <param name="code">The source code.</param>
/// <param name="parentProxy">Represents the parent item.</param>
/// <param name="languageService">The C# language service.</param>
/// <param name="preprocessorDefinitions">Optional preprocessor definitions.</param>
/// <param name="preprocessorSymbol">The preprocessor directive symbol.</param>
/// <param name="startIndex">The index of the start of the expression body within the text string.</param>
/// <returns>Returns the expression.</returns>
internal static Expression GetConditionalPreprocessorBodyExpression(
CsDocument document,
Code code,
CodeUnitProxy parentProxy,
CsLanguageService languageService,
IDictionary <string, object> preprocessorDefinitions,
Symbol preprocessorSymbol,
int startIndex)
{
Param.AssertNotNull(document, "document");
Param.AssertNotNull(code, "code");
Param.AssertNotNull(parentProxy, "parentProxy");
Param.AssertNotNull(languageService, "languageService");
Param.Ignore(preprocessorDefinitions);
Param.AssertNotNull(preprocessorSymbol, "preprocessorSymbol");
Param.AssertGreaterThanOrEqualToZero(startIndex, "startIndex");
CsLanguageService.Debug.Assert(preprocessorSymbol.SymbolType == SymbolType.PreprocessorDirective, "The symbol is not a preprocessor directive.");
string text = preprocessorSymbol.Text.Substring(startIndex, preprocessorSymbol.Text.Length - startIndex).TrimEnd(null);
if (text.Length > 0)
{
// Trim off the whitespace at the beginning and advance the start index.
int trimIndex = 0;
for (int i = 0; i < text.Length; ++i)
{
if (char.IsWhiteSpace(text[i]))
{
++trimIndex;
}
else
{
break;
}
}
if (trimIndex > 0)
{
text = text.Substring(trimIndex, text.Length - trimIndex);
startIndex += trimIndex;
}
if (text.Length > 0)
{
// Extract the symbols within this text.
Code preprocessorCode = new Code(text, "Preprocessor", "Preprocessor");
var lexer = new CodeLexer(
languageService,
preprocessorCode,
new CodeReader(preprocessorCode),
preprocessorSymbol.Location.StartPoint.Index + startIndex,
preprocessorSymbol.Location.StartPoint.IndexOnLine + startIndex,
preprocessorSymbol.Location.StartPoint.LineNumber);
List <Symbol> symbolList = lexer.GetSymbols(document, null);
var directiveSymbols = new SymbolManager(symbolList);
var preprocessorBodyParser = new CodeParser(languageService, document, directiveSymbols, preprocessorDefinitions);
// Parse these symbols to create the body expression.
return(preprocessorBodyParser.GetNextConditionalPreprocessorExpression(document, parentProxy));
}
}
// The directive has no body.
return(null);
}
