lestes::lang::cplus::lex::encoder_host Class Reference

Host chacter set encoder. More...

#include <encoder_host.hh>

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

List of all members.

Public Member Functions
ptr< ucn_token >	read (void)
	Reads next token.
Static Public Member Functions
static ptr< encoder_host >	create (void)
	Returns new instance.
Protected Member Functions
	encoder_host (void)
	Creates the object.
virtual void	gc_mark (void)
	Marks the object.
Private Member Functions
	encoder_host (const encoder_host &)
	Hides copy constructor.
encoder_host &	operator= (const encoder_host &)
	Hides assignment operator.

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Detailed Description

Host chacter set encoder.

Performs host character set encoding to internal representation. Useful for testing, when input comes from string created in the compiler sources.

Definition at line 52 of file encoder_host.hh.

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Constructor & Destructor Documentation

lestes::lang::cplus::lex::encoder_host::encoder_host

(

void

)

[protected]

Creates the object.

Creates the encoder.

Definition at line 53 of file encoder_host.cc.

Referenced by create().

{
}

lestes::lang::cplus::lex::encoder_host::encoder_host

(

const encoder_host &

)

[private]

Hides copy constructor.

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Member Function Documentation

ptr< ucn_token > lestes::lang::cplus::lex::encoder_host::read

(

void

)

[virtual]

Reads next token.

Reads next token. Performs encoding from host character set. Checks whether the input contains valid characters, for which the encoding into ucn is known. If error is encountered, it returns token with type ucn_token::TOK_ERROR.

Precondition:

Input into the filter is set.

Returns:

The next token encoded from host character.

Token with type ucn_token::TOK_ERROR if the source character is invalid (out of range).

Token with type ucn_token::TOK_EOF in case of previous error.

Implements lestes::lang::cplus::lex::ucn_filter.

Definition at line 66 of file encoder_host.cc.

References lestes::msg::message::create(), lestes::lang::cplus::lex::ucn_token::create_error(), lestes::msg::message::FLG_ERROR, lestes::lang::cplus::lex::ucn_filter::input_read(), lestes::lang::cplus::lex::ucn_token::TOK_NOT_EOF, and u.

{
        // TODO remove return the eof token in case of previous error if (bad) return bad;
        
        ptr<ucn_token> t = input_read();
        ucn u = t->value_get();
        ucn_token_type utt = t->type_get();

        if (utt == ucn_token::TOK_NOT_EOF) {
                // check that the character is can be converted to internal
                if (character::is_encodable_host(u)) {
                        ulint x = character::extract_value(u);
                        // encode value in source charset
                        // TODO t->value_set(character::create_from_host(static_cast<hchar>(x)));
                        t = t->clone_value(character::create_from_host(static_cast<hchar>(x))); 
                } else {
                        // TODO report error: value out of range for ASCII
                        //t->type_set(ucn_token::TOK_ERROR);
                        // TODO pt remove set flag for next calls
                        //bad = ucn_token::create(ucn_token::TOK_EOF);
                        // TODO pt
                        t = ucn_token::create_error(::lestes::msg::message::create(0xdada,"TODO encoder_host",::lestes::msg::message::FLG_ERROR));
                }
        }

        return t;
}

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

(

void

)

[static]

Returns new instance.

Returns new instance of the encoder.

Returns:

The new instance.

Definition at line 106 of file encoder_host.cc.

References encoder_host().

{
        return new encoder_host();
}

void lestes::lang::cplus::lex::encoder_host::gc_mark

(

void

)

[protected, virtual]

Marks the object.

Marks the object.

Reimplemented from lestes::lang::cplus::lex::ucn_filter.

Definition at line 97 of file encoder_host.cc.

References lestes::lang::cplus::lex::ucn_filter::gc_mark().

{
        encoder::gc_mark();
}

encoder_host& lestes::lang::cplus::lex::encoder_host::operator=

(

const encoder_host &

)

[private]

Hides assignment operator.

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

• encoder_host.hh
• encoder_host.cc

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