lestes::lang::cplus::lex::token_value Class Reference

Token value. More...

#include <token_value.hh>

Inheritance diagram for lestes::lang::cplus::lex::token_value:

List of all members.

Public Types
typedef ucn_string	content_type
	Type of content.
Public Member Functions
ucn_string	content_get (void) const
	Returns content.
bool	equals (const ptr< token_value > &other) const
	Tests equality.
bool	less_than (const ptr< token_value > &other) const
	Tests inequality.
ulint	hash (void) const
	returns hash of the content
Static Public Member Functions
static ptr< token_value >	create (const content_type &a_content)
	Returns object initialized with content.
Private Types
typedef ::lestes::std::map< content_type, srp< token_value >, compare_content >	shared_type
	Type of structure for sharing instances.
Private Member Functions
	token_value (const content_type &a_content)
	Creates object with content.
Private Attributes
content_type	content
	The representation of the value.
Static Private Attributes
static ptr< shared_type >	shared = token_value::shared_type::create()
	Structure for sharing instances.
Classes
struct	compare_content
	Less than comparator. More...
struct	compare_less
	Less than comparator for token_value. More...

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Detailed Description

Token value.

Represents token value, wrapping ucn_string. The object is constant and shared.

Definition at line 51 of file token_value.hh.

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Member Typedef Documentation

typedef ucn_string lestes::lang::cplus::lex::token_value::content_type

Type of content.

Definition at line 54 of file token_value.hh.

typedef ::lestes::std::map<content_type,srp<token_value>,compare_content> lestes::lang::cplus::lex::token_value::shared_type [private]

Type of structure for sharing instances.

Definition at line 80 of file token_value.hh.

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Constructor & Destructor Documentation

lestes::lang::cplus::lex::token_value::token_value

(

const content_type &

a_content

)

[private]

Creates object with content.

Constructs object, initializes with a_content.

Postcondition:

is_equal(content,a_content)

Parameters:

a_content

The initialization value.

Definition at line 46 of file token_value.cc.

                                                     :
        content(a_content)
{
}

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Member Function Documentation

ptr< token_value > lestes::lang::cplus::lex::token_value::create

(

const content_type &

a_content

)

[static]

Returns object initialized with content.

Returns new token value, initializes with a_content.

Parameters:

a_content

The initialization value.

Definition at line 56 of file token_value.cc.

References shared.

Referenced by lestes::lang::cplus::lex::ucn_token_buffer::extract_bad_literal(), lestes::lang::cplus::lex::ucn_token_buffer::extract_invalid_ucn(), lestes::lang::cplus::lex::ucn_token_buffer::extract_ordinary(), lestes::lang::cplus::lex::ucn_token_buffer::extract_simple_ucn(), lestes::lang::cplus::lex::ucn_token_buffer::extract_ucn_literal(), lestes::lang::cplus::lex::ucn_token_buffer::extract_until(), lestes::lang::cplus::lex::string_joiner::join_sequence(), lestes::lang::cplus::lex::evaluator::parse_include(), lestes::lang::cplus::lex::macro::parse_name(), lestes::lang::cplus::lex::stringifier::process(), lestes::lang::cplus::lex::concat::process(), lestes::lang::cplus::lex::evaluator::process_directive(), lestes::lang::cplus::lex::preprocessor::read(), and lestes::lang::cplus::lex::string_translator::translate().

{
        // singleton-like factory
        shared_type::iterator it = shared->find(a_content);
        if (it != shared->end()) return (*it).second;
        ptr<token_value> nju = new token_value(a_content);
        shared->insert(shared_type::value_type(a_content,nju));
        return nju;
        // TODO pt remove return ptr<token_value>(new token_value(a_content));
}

token_value::content_type lestes::lang::cplus::lex::token_value::content_get

(

void

)

const

Returns content.

Returns content of value object.

Returns:

The content of the object.

Definition at line 81 of file token_value.cc.

References content.

Referenced by less_than().

{
        return content;
}

bool lestes::lang::cplus::lex::token_value::equals

(

const ptr< token_value > &

other

)

const

Tests equality.

Tests equality. Because of sharing instances, only pointers are compared.

Parameters:

other

The token value to compare to.

Returns:

true If both contents are equal.

Definition at line 72 of file token_value.cc.

{
        return other == this;
}

bool lestes::lang::cplus::lex::token_value::less_than

(

const ptr< token_value > &

other

)

const

Tests inequality.

Compares to other token value. The content is compared with < operator.

Parameters:

other

The token value to compare.

Returns:

true If the other is not null and the content compares less.

Definition at line 101 of file token_value.cc.

References content_get(), and lestes::is_less().

{
        return other && is_less(content_get(),other->content_get());
}

ulint lestes::lang::cplus::lex::token_value::hash

(

void

)

const

returns hash of the content

Returns hash value of content.

Returns:

The hash value.

Definition at line 90 of file token_value.cc.

{
        // TODO compute hash from content
        return 0;
}

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Member Data Documentation

content_type lestes::lang::cplus::lex::token_value::content [private]

The representation of the value.

Definition at line 74 of file token_value.hh.

Referenced by content_get().

ptr< token_value::shared_type > lestes::lang::cplus::lex::token_value::shared = token_value::shared_type::create() [static, private]

Structure for sharing instances.

Structure for sharing instances of token value having the same content.

Definition at line 83 of file token_value.hh.

Referenced by create().

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The documentation for this class was generated from the following files:

• token_value.hh
• token_value.cc

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