Library: Foundation
Package: Streams
Header: Poco/Token.h
Description
The base class for all token classes that can be registered with the StreamTokenizer.
Inheritance
Known Derived Classes: InvalidToken, EOFToken, WhitespaceToken
Member Summary
Member Functions: asChar, asFloat, asInteger, asInteger64, asString, asUnsignedInteger, asUnsignedInteger64, finish, is, start, tokenClass, tokenString
Enumerations
Class
Constructors
Token
Token();
Creates the Token.
Destructor
~Token 
virtual ~Token();
Destroys the Token.
Member Functions
asChar
virtual char asChar() const;
Returns a char representation of the token.
asFloat
virtual double asFloat() const;
Returns a floating-point representation of the token.
asInteger
virtual int asInteger() const;
Returns an integer representation of the token.
asInteger64
virtual Int64 asInteger64() const;
Returns a 64-bit integer representation of the token.
asString
virtual std::string asString() const;
Returns a string representation of the token.
asUnsignedInteger
virtual unsigned asUnsignedInteger() const;
Returns an unsigned integer representation of the token.
asUnsignedInteger64
virtual UInt64 asUnsignedInteger64() const;
Returns an unsigned 64-bit integer representation of the token.
finish
virtual void finish(
std::istream & istr
);
Builds the token by reading and appending the remaining characters from istr.
is 
bool is(
Class tokenClass
) const;
Returns true iff the token has the given class.
start
virtual bool start(
char c,
std::istream & istr
);
Checks if the given character (and, optionally, the next character in the input stream) start a valid token. Returns true if so, false otherwise.
The current read position in istr must not be changed. In other words, only the peek() method of istream may be used.
If the character starts the token, it should be set as the token's value.
tokenClass
virtual Class tokenClass() const;
Returns the kind of the token.
tokenString
const std::string & tokenString() const;
Returns the token's raw string.
Variables
_value 
std::string _value;