/// <summary>
/// Extracts the body of the given preprocessor directive symbol, parses it, and returns the parsed expression.
/// </summary>
/// <param name="parser">
/// The C# parser.
/// </param>
/// <param name="sourceCode">
/// The source code containing the preprocessor directive symbol.
/// </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(CsParser parser, SourceCode sourceCode, Symbol preprocessorSymbol, int startIndex)
{
Param.AssertNotNull(parser, "parser");
Param.AssertNotNull(sourceCode, "sourceCode");
Param.AssertNotNull(preprocessorSymbol, "preprocessorSymbol");
Param.AssertGreaterThanOrEqualToZero(startIndex, "startIndex");
Debug.Assert(preprocessorSymbol.SymbolType == SymbolType.PreprocessorDirective, "The symbol is not a preprocessor directive.");
string text = preprocessorSymbol.Text.Substring(startIndex, preprocessorSymbol.Text.Length - startIndex).Trim();
if (text.Length > 0)
{
using (StringReader reader = new StringReader(text))
{
// Extract the symbols within this text.
CodeLexer lexer = new CodeLexer(parser, sourceCode, new CodeReader(reader));
List<Symbol> symbolList = lexer.GetSymbols(sourceCode, null);
SymbolManager directiveSymbols = new SymbolManager(symbolList);
CodeParser preprocessorBodyParser = new CodeParser(parser, directiveSymbols);
// Parse these symbols to create the body expression.
return preprocessorBodyParser.GetNextConditionalPreprocessorExpression(sourceCode);
}
}
// The directive has no body.
return null;
}
/// <summary>
/// Extracts the body of the given preprocessor directive symbol, parses it, and returns the parsed expression.
/// </summary>
/// <param name="parser">
/// The C# parser.
/// </param>
/// <param name="sourceCode">
/// The source code containing the preprocessor directive symbol.
/// </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(CsParser parser, SourceCode sourceCode, Symbol preprocessorSymbol, int startIndex)
{
Param.AssertNotNull(parser, "parser");
Param.AssertNotNull(sourceCode, "sourceCode");
Param.AssertNotNull(preprocessorSymbol, "preprocessorSymbol");
Param.AssertGreaterThanOrEqualToZero(startIndex, "startIndex");
Debug.Assert(preprocessorSymbol.SymbolType == SymbolType.PreprocessorDirective, "The symbol is not a preprocessor directive.");
string text = preprocessorSymbol.Text.Substring(startIndex, preprocessorSymbol.Text.Length - startIndex).Trim();
if (text.Length > 0)
{
using (StringReader reader = new StringReader(text))
{
// Extract the symbols within this text.
CodeLexer lexer = new CodeLexer(parser, sourceCode, new CodeReader(reader));
List <Symbol> symbolList = lexer.GetSymbols(sourceCode, null);
SymbolManager directiveSymbols = new SymbolManager(symbolList);
CodeParser preprocessorBodyParser = new CodeParser(parser, directiveSymbols);
// Parse these symbols to create the body expression.
return(preprocessorBodyParser.GetNextConditionalPreprocessorExpression(sourceCode));
}
}
// The directive has no body.
return(null);
}
/// <summary>
/// Initializes a new instance of the CodeParser class.
/// </summary>
/// <param name="parser">
/// The C# parser.
/// </param>
/// <param name="symbols">
/// The symbols in the document to parse.
/// </param>
public CodeParser(CsParser parser, SymbolManager symbols)
{
Param.AssertNotNull(parser, "parser");
Param.AssertNotNull(symbols, "symbols");
this.parser = parser;
this.symbols = symbols;
}
/// <summary>
/// Parses the contents of the document.
/// </summary>
internal void ParseDocument()
{
Debug.Assert(this.document == null, "A CodeParser instance may only be used once.");
// Find the list of symbols in the document.
List<Symbol> symbolList = this.lexer.GetSymbols(this.lexer.SourceCode, this.lexer.SourceCode.Project.Configuration);
// Create the symbol manager class.
this.symbols = new SymbolManager(symbolList);
// Create the document object.
this.document = new CsDocument(this.lexer.SourceCode, this.parser, this.tokens);
Reference<ICodePart> documentRootReference = new Reference<ICodePart>();
// Get the file header if it exists.
FileHeader fileHeader = this.GetFileHeader(documentRootReference);
// Let the symbol manager know if this document contains generated code.
if (fileHeader.Generated)
{
this.symbols.IncrementGeneratedCodeBlocks();
}
this.document.FileHeader = fileHeader;
// Create a declaration for the root element.
Declaration declaration = new Declaration(
new CsTokenList(this.document.Tokens), Strings.Root, ElementType.Root, AccessModifierType.Public, new Dictionary<CsTokenType, CsToken>());
// Create the root element for the document.
DocumentRoot root = new DocumentRoot(this.document, declaration, fileHeader.Generated);
documentRootReference.Target = root;
// Parse the contents of the document.
this.ParseElementContainerBody(root, documentRootReference, this.parser.PartialElements, false);
// Check if there are any tokens in the document.
if (this.document.Tokens.Count > 0)
{
// Fill in the token list for the root element.
root.Tokens = new CsTokenList(this.document.Tokens, this.document.Tokens.First, this.document.Tokens.Last);
// Fill in the location for the element.
root.Location = CsToken.JoinLocations(this.document.Tokens.First, this.document.Tokens.Last);
}
// Add the root element to the document.
this.document.RootElement = root;
// When in debug mode, ensure that all tokens are correctly mapped to a parent element.
this.DebugValidateParentReferences();
}
