| Interface | Description |
|---|---|
| Token |
currently this is a flag interface
|
| Class | Description |
|---|---|
| AssignmentToken |
Represents the assignment token ("=")
|
| CharToken |
A token represented by a single character, e.g., '*', ';', '[' and
so on; the method equals compares a CharToken as equal to another CharToken
encapsulating the same character.
|
| CharTokenFactory |
Factory for generating CharToken objects ensuring that only one of any
specific CharToken object is created (enforcing CharToken singleton-ness per
char value)
|
| EOFToken |
This represents an end-of-file token Uses the singleton pattern since there's
no reason to have more than one such token.
|
| EOLToken |
This represents an end-of-line token.
|
| EqualToken |
Represents = token
|
| IdentifierToken |
Represents an identifier (a variable name)
|
| LeftBracketToken |
Represents a left bracket
|
| LeftParenToken |
Represents a left parenthesis
|
| NumberToken |
Represents a number (using doubles).
|
| PrintToken |
Represents the PRINT instruction token
|
| RepeatToken |
Represents a REPEAT instruction token
|
| ReservedToken |
Represents a reserved word
|
| RightBracketToken |
Represents a right bracket
|
| RightParenToken |
Represents a right parenthesis
|
| TokenFactory |
Parses a stream into tokens
|
| VariableToken |
Represents a variable
|