Loyc.Syntax.Lexing.TokenListAsLexer Class Reference

Adapter: converts IEnumerable(Token) to the ILexer{Token} interface. More...

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Source file:

• /Core/Loyc.Syntax/Lexing/TokenListAsLexer.cs

Inheritance diagram for Loyc.Syntax.Lexing.TokenListAsLexer:

Remarks

Adapter: converts IEnumerable(Token) to the ILexer{Token} interface.

The LineNumber property is computed on-demand by the ISourceFile provided.

TODO: IndentLevel, IndentString do not work.

Properties
Loyc.Syntax.ISourceFile	SourceFile [get]
Loyc.IMessageSink	ErrorSink [get, set]
int	IndentLevel [get]
UString	IndentString [get]
int	LineNumber [get]
int	InputPosition [get]
Token	Current [get]
Properties inherited from Loyc.Syntax.Lexing.ILexer< Token >
ISourceFile	SourceFile [get]
	The file being lexed. More...
IMessageSink	ErrorSink [get, set]
	Event handler for errors. More...
int	IndentLevel [get]
	Indentation level of the current line. This is updated after scanning the first whitespaces on a new line, and may be reset to zero when NextToken() returns a newline. More...
UString	IndentString [get]
	Gets a string slice that holds the spaces or tabs that were used to indent the current line. More...
int	LineNumber [get]
	Current line number (1 for the first line). More...
int	InputPosition [get]
	Current input position (an index into SourceFile.Text). More...

Public Member Functions
	TokenListAsLexer (IEnumerable< Token > tokenList, ISourceFile sourceFile)
	TokenListAsLexer (IEnumerator< Token > tokenList, ISourceFile sourceFile)
Maybe< Token >	NextToken ()
	Scans the next token and returns information about it. More...
bool	MoveNext ()
SourcePos	IndexToLine (int index)
	Returns the position in a source file of the specified index. More...

Member Function Documentation

SourcePos Loyc.Syntax.Lexing.TokenListAsLexer.IndexToLine ( int  index )

inline

Returns the position in a source file of the specified index.

If index is negative, this should return a SourcePos where Line and PosInLine are zero (signifying an unknown location). If index is beyond the end of the file, this should retun the final position in the file.

Implements Loyc.Syntax.IIndexToLine.

Maybe<Token> Loyc.Syntax.Lexing.TokenListAsLexer.NextToken ( )

inline

Scans the next token and returns information about it.

Returns

The next token, or null at the end of the source file.

Implements Loyc.Syntax.Lexing.ILexer< Token >.