Public Member Functions | |
TZCommentState | GetCommentState () |
TZNumberState | GetNumberState () |
TZQuoteState | GetQuoteState () |
TZSymbolState | GetSymbolState () |
TZWhitespaceState | GetWhitespaceState () |
TZWordState | GetWordState () |
TZTokenDynArray | TokenizeBuffer (const string Buffer, TZTokenOptions Options) |
TStrings | TokenizeBufferToList (const string Buffer, TZTokenOptions Options) |
TZTokenDynArray | TokenizeStream (TStream Stream, TZTokenOptions Options) |
TStrings | TokenizeStreamToList (TStream Stream, TZTokenOptions Options) |
This class is highly customizable with regard to exactly how this division occurs, but it also has defaults that are suitable for many languages. This class assumes that the character values read from the string lie in the range 0-255. For example, the Unicode value of a capital A is 65, so System.out.println((char)65);
prints out a capital A.
The behavior of a tokenizer depends on its character state table. This table is an array of 256 TokenizerState
states. The state table decides which state to enter upon reading a character from the input string.
For example, by default, upon reading an 'A', a tokenizer will enter a "word" state. This means the tokenizer will ask a WordState
object to consume the 'A', along with the characters after the 'A' that form a word. The state's responsibility is to consume characters and return a complete token.
The default table sets a SymbolState for every character from 0 to 255, and then overrides this with: <blockquote>
From To State 0 ' ' whitespaceState 'a' 'z' wordState 'A' 'Z' wordState 160 255 wordState '0' '9' numberState '-' '-' numberState '.' '.' numberState '"' '"' quoteState '\'' '\'' quoteState '/' '/' slashState</blockquote> In addition to allowing modification of the state table, this class makes each of the states above available. Some of these states are customizable. For example, wordState allows customization of what characters can be part of a word, after the first character.
Definition at line 587 of file ZTokenizer.pas.
TZCommentState IZTokenizer::GetCommentState | ( | ) |
Reimplemented in TZTokenizer.
TZNumberState IZTokenizer::GetNumberState | ( | ) |
Reimplemented in TZTokenizer.
TZQuoteState IZTokenizer::GetQuoteState | ( | ) |
Reimplemented in TZTokenizer.
TZSymbolState IZTokenizer::GetSymbolState | ( | ) |
Reimplemented in TZTokenizer.
TZWhitespaceState IZTokenizer::GetWhitespaceState | ( | ) |
Reimplemented in TZTokenizer.
TZWordState IZTokenizer::GetWordState | ( | ) |
Reimplemented in TZTokenizer.
TZTokenDynArray IZTokenizer::TokenizeBuffer | ( | const string | Buffer, | |
TZTokenOptions | Options | |||
) |
Reimplemented in TZTokenizer.
TStrings IZTokenizer::TokenizeBufferToList | ( | const string | Buffer, | |
TZTokenOptions | Options | |||
) |
Reimplemented in TZTokenizer.
TZTokenDynArray IZTokenizer::TokenizeStream | ( | TStream | Stream, | |
TZTokenOptions | Options | |||
) |
Reimplemented in TZTokenizer.
TStrings IZTokenizer::TokenizeStreamToList | ( | TStream | Stream, | |
TZTokenOptions | Options | |||
) |
Reimplemented in TZTokenizer.