Language Class Reference

#include <language.h>

Inheritance diagram for Language:

Collaboration diagram for Language:

Public Member Functions
	Language ()
virtual	~Language ()
char *	GetText (int id)
char *	GetHelpText (char *ident)
char *	GetHelpText (Symbol symbol)
Symbol	FindKeyword (const char *ident) const
virtual char	GetFractionPoint ()=0
virtual bool	CharIsAlNum (unsigned long character)=0
virtual bool	CharIsAlpha (unsigned long character)=0
virtual bool	CharIsDigit (unsigned long character)=0
virtual bool	CharIsPunct (unsigned long character)=0
virtual bool	CharIsSpace (unsigned long character)=0
virtual bool	CharIsCntrl (unsigned long character)=0
virtual bool	CharIsQuote (unsigned long character)
virtual bool	CharIsBlank (unsigned long character)
virtual bool	CharIsNewLine (unsigned long character)
virtual bool	CharIsOperator (unsigned long character)
virtual bool	StrIsEqualLoc (const char *s1, const char *s2)=0
virtual bool	Validate (char c)=0
void	SetAnsiMode (bool value)
Public Member Functions inherited from CharValidator
virtual	~CharValidator ()

Protected Member Functions
virtual char *	Translate (textdef *def)=0
virtual char *	Translate (helptextdef *def)=0
virtual char *	Translate (identhelpdef *def)=0

Protected Attributes
keyworddef *	keywordsloc
unsigned int	keywordcount
unsigned int	textcount
unsigned int	identcount
unsigned int	helpcount
unsigned int	aliascount

Private Member Functions
char *	FindAlias (const char *ident) const
char *	UntagText (const char *text)

Private Attributes
char *	lastText
bool	ansiMode

Detailed Description

Definition at line 40 of file language.h.

Constructor & Destructor Documentation

Language()

Language::Language

(

)

Definition at line 76 of file language.cpp.

References aliascount, helpcount, helptexts, identaliases, identcount, identtexts, keywordcount, keywords, keywordsloc, lastText, textcount, and textdefs.

Referenced by StandardLanguage::StandardLanguage().

{
    lastText = nullptr;
    keywordsloc = nullptr;
    keywordcount = sizeof(keywords) / sizeof(keyworddef);
    textcount = sizeof(textdefs) / sizeof(textdef);
    identcount = sizeof(identtexts) / sizeof(identhelpdef);
    helpcount = sizeof(helptexts) / sizeof(helptextdef);
    aliascount = sizeof(identaliases) / sizeof(identalias);
}

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~Language()

Language::~Language ( )

virtual

Definition at line 87 of file language.cpp.

References keywordsloc, and lastText.

{
    if (lastText != nullptr)
    {
        delete lastText;
    }

    if (keywordsloc != nullptr)
    {
        delete [] keywordsloc;
    }
}

Member Function Documentation

CharIsAlNum()

virtual bool Language::CharIsAlNum ( unsigned long  character )

pure virtual

Implemented in StandardLanguage.

CharIsAlpha()

virtual bool Language::CharIsAlpha ( unsigned long  character )

pure virtual

Implemented in StandardLanguage.

Referenced by Lexer::GetLiteral().

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CharIsBlank()

bool Language::CharIsBlank ( unsigned long  character )

virtual

Definition at line 232 of file language.cpp.

{
#if !defined(APPLE)
    if (character == '\r')
    {
        return true;
    }
#endif

    return (character == ' ' || character == '\t');
}

CharIsCntrl()

virtual bool Language::CharIsCntrl ( unsigned long  character )

pure virtual

Implemented in StandardLanguage.

Referenced by Lexer::GetQuotedIdent(), and Lexer::ShouldSkip().

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CharIsDigit()

virtual bool Language::CharIsDigit ( unsigned long  character )

pure virtual

Implemented in StandardLanguage.

Referenced by Lexer::GetLiteral().

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CharIsNewLine()

bool Language::CharIsNewLine ( unsigned long  character )

virtual

Definition at line 244 of file language.cpp.

{
#if defined(APPLE)
    return (character == '\r');
#else
    return (character == '\n');
#endif
}

CharIsOperator()

bool Language::CharIsOperator ( unsigned long  character )

virtual

Definition at line 253 of file language.cpp.

References operatordef::chr, and operators.

{
    static const unsigned int count = sizeof(operators) / sizeof(operatordef);
    for (unsigned int i = 0; i < count; i++)
    {
        if (operators[i].chr == (char)character)
        {
            return true;
        }
    }

    return false;
}

CharIsPunct()

virtual bool Language::CharIsPunct ( unsigned long  character )

pure virtual

Implemented in StandardLanguage.

CharIsQuote()

bool Language::CharIsQuote ( unsigned long  character )

virtual

Definition at line 227 of file language.cpp.

{
    return (character == '"');
}

CharIsSpace()

virtual bool Language::CharIsSpace ( unsigned long  character )

pure virtual

Implemented in StandardLanguage.

Referenced by Lexer::GetNextToken(), and Lexer::ShouldSkip().

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FindAlias()

char * Language::FindAlias ( const char *  ident ) const

private

Definition at line 105 of file language.cpp.

References identalias::alias, aliascount, identalias::ident, identaliases, and StrIsEqual().

Referenced by GetHelpText().

{
    for (unsigned int i = 0; i < aliascount; i++)
    {
        if (StrIsEqual(identaliases[i].ident, ident))
        {
            return const_cast<char*>(identaliases[i].alias);
        }
    }

    return const_cast<char*>(ident);
}

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FindKeyword()

Symbol Language::FindKeyword

(

const char *

ident

)

const

Definition at line 118 of file language.cpp.

References keywordcount, keywords, keywordsloc, keyworddef::name, StrIsEqualLoc(), and keyworddef::symbol.

Referenced by Lexer::FindKeyword().

{
    for (unsigned int i = 0; i < keywordcount; i++)
    {
        if (Program->Language->StrIsEqualLoc(keywords[i].name, ident) ||
            (keywordsloc != nullptr && Program->Language->StrIsEqualLoc(keywordsloc[i].name, ident)))
        {
            return keywords[i].symbol;
        }
    }

    return static_cast<Symbol>(0);
}

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GetFractionPoint()

virtual char Language::GetFractionPoint ( )

pure virtual

Implemented in StandardLanguage.

Referenced by Program::NewPositionalInput(), Program::NewPositionalOutput(), and Program::Program().

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GetHelpText() [1/2]

char * Language::GetHelpText

(

char *

ident

)

Definition at line 154 of file language.cpp.

References FindAlias(), identhelpdef::ident, identcount, identtexts, StrIsEqual(), Translate(), and UntagText().

Referenced by HelpStatement::Execute().

{
    char* s = FindAlias(ident);
    identhelpdef* def = nullptr;
    for (unsigned int i = 0; i < identcount; i++)
    {
        if (StrIsEqual(identtexts[i].ident, s))
        {
            def = (identhelpdef*)&identtexts[i];
            break;
        }
    }

    if (def == nullptr)
    {
        return (char*)(HELPNOHELP);
    }

    char* text = Translate(def);
    char* untagged = UntagText(text);
    return untagged;
}

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GetHelpText() [2/2]

char * Language::GetHelpText

(

Symbol

symbol

)

Definition at line 177 of file language.cpp.

References helpcount, helptexts, helptextdef::symbol, Translate(), and UntagText().

Referenced by HelpStatement::Execute().

{
    helptextdef* def = nullptr;
    for (unsigned int i = 0; i < helpcount; i++)
    {
        if (helptexts[i].symbol == symbol)
        {
            def = (helptextdef*)&helptexts[i];
            break;
        }
    }

    if (def == nullptr)
    {
        return (char*)(HELPNOHELP);
    }

    char* text = Translate(def);
    char* untagged = UntagText(text);
    return untagged;
}

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GetText()

char * Language::GetText

(

int

id

)

Definition at line 132 of file language.cpp.

References textdef::id, textcount, textdefs, Translate(), and UntagText().

{
    textdef* def = nullptr;
    for (unsigned int i = 0; i < textcount; i++)
    {
        if (textdefs[i].id == id)
        {
            def = (textdef*)&textdefs[i];
            break;
        }
    }

    if (def == nullptr)
    {
        return (char*)(HELPNOHELP);
    }

    char* text = Translate(def);
    char* untagged = UntagText(text);
    return untagged;
}

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SetAnsiMode()

void Language::SetAnsiMode

(

bool

value

)

Definition at line 100 of file language.cpp.

References ansiMode.

Referenced by Program::SetAnsiMode().

{
    ansiMode = value;
}

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StrIsEqualLoc()

virtual bool Language::StrIsEqualLoc ( const char *  s1, const char *  s2  )

pure virtual

Implemented in StandardLanguage.

Referenced by FindKeyword().

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Translate() [1/3]

virtual char* Language::Translate ( textdef *  def )

protectedpure virtual

Implemented in StandardLanguage.

Referenced by GetText().

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Translate() [2/3]

virtual char* Language::Translate ( helptextdef *  def )

protectedpure virtual

Implemented in StandardLanguage.

Referenced by GetHelpText().

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Translate() [3/3]

virtual char* Language::Translate ( identhelpdef *  def )

protectedpure virtual

Implemented in StandardLanguage.

Referenced by GetHelpText().

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UntagText()

char * Language::UntagText ( const char *  text )

private

Definition at line 199 of file language.cpp.

References ansiMode, ansiTags, emptyTags, lastText, MemCopy(), StrLen(), and Untag().

Referenced by GetHelpText(), and GetText().

{
    if (lastText != nullptr)
    {
        delete lastText;
        lastText = nullptr;
    }

    if (text == nullptr)
    {
        return nullptr;
    }

    unsigned int count = sizeof(ansiTags) / sizeof(texttag);
    char* untagged = new char[StrLen(text) * 2];
    texttag* tags = ansiMode
        ? (texttag*)ansiTags
        : (texttag*)emptyTags;
    Untag(untagged, text, tags, count);

    unsigned int len = StrLen(untagged) + 1;
    lastText = new char[len];
    MemCopy(lastText, untagged, len);
    delete [] untagged;

    return lastText;
}

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Validate()

virtual bool Language::Validate ( char  c )

pure virtual

Implements CharValidator.

Implemented in StandardLanguage.

Member Data Documentation

aliascount

unsigned int Language::aliascount

protected

Definition at line 74 of file language.h.

Referenced by FindAlias(), and Language().

ansiMode

bool Language::ansiMode

private

Definition at line 80 of file language.h.

Referenced by SetAnsiMode(), and UntagText().

helpcount

unsigned int Language::helpcount

protected

Definition at line 73 of file language.h.

Referenced by GetHelpText(), and Language().

identcount

unsigned int Language::identcount

protected

Definition at line 72 of file language.h.

Referenced by GetHelpText(), and Language().

keywordcount

unsigned int Language::keywordcount

protected

Definition at line 70 of file language.h.

Referenced by FindKeyword(), and Language().

keywordsloc

keyworddef* Language::keywordsloc

protected

Definition at line 69 of file language.h.

Referenced by FindKeyword(), Language(), and ~Language().

lastText

char* Language::lastText

private

Definition at line 79 of file language.h.

Referenced by Language(), UntagText(), and ~Language().

textcount

unsigned int Language::textcount

protected

Definition at line 71 of file language.h.

Referenced by GetText(), and Language().

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

• src/system/language.h
• src/system/language.cpp