Compiler::Scanner Class Reference

Scanner. More...

#include <scanner.hpp>

Collaboration diagram for Compiler::Scanner:

Public Types
enum	keyword {   K_begin, K_end, K_short, K_long,   K_float, K_if, K_endif, K_else,   K_elseif, K_while, K_endwhile, K_return,   K_messagebox, K_set, K_to, K_getsquareroot,   K_menumode, K_random, K_startscript, K_stopscript,   K_scriptrunning, K_getdistance, K_getsecondspassed, K_enable,   K_disable, K_getdisabled }
enum	special {   S_newline, S_open, S_close, S_cmpEQ,   S_cmpNE, S_cmpLT, S_cmpLE, S_cmpGT,   S_cmpGE, S_plus, S_minus, S_mult,   S_div, S_comma, S_ref, S_member }

Public Member Functions
	Scanner (ErrorHandler &errorHandler, std::istream &inputStream, const Extensions *extensions=0)
	constructor More...
void	scan (Parser &parser)
	Scan a token and deliver it to the parser. More...
void	putbackSpecial (int code, const TokenLoc &loc)
	put back a special token More...
void	putbackInt (int value, const TokenLoc &loc)
	put back an integer token More...
void	putbackFloat (float value, const TokenLoc &loc)
	put back a float token More...
void	putbackName (const std::string &name, const TokenLoc &loc)
	put back a name token More...
void	putbackKeyword (int keyword, const TokenLoc &loc)
	put back a keyword token More...
void	listKeywords (std::vector< std::string > &keywords)
	Append all known keywords to keywords. More...
void	enableStrictKeywords ()

Private Types
enum	putback_type {   Putback_None, Putback_Special, Putback_Integer, Putback_Float,   Putback_Name, Putback_Keyword }

Private Member Functions
	Scanner (const Scanner &)
Scanner &	operator= (const Scanner &)
bool	get (char &c)
void	putback (char c)
bool	scanToken (Parser &parser)
bool	scanInt (char c, Parser &parser, bool &cont)
bool	scanFloat (const std::string &intValue, Parser &parser, bool &cont)
bool	scanName (char c, Parser &parser, bool &cont)
bool	scanName (std::string &name)
bool	scanSpecial (char c, Parser &parser, bool &cont)
bool	isStringCharacter (char c, bool lookAhead=true)

Static Private Member Functions
static bool	isWhitespace (char c)

Private Attributes
ErrorHandler &	mErrorHandler
TokenLoc	mLoc
TokenLoc	mPrevLoc
std::istream &	mStream
const Extensions *	mExtensions
putback_type	mPutback
int	mPutbackCode
int	mPutbackInteger
float	mPutbackFloat
std::string	mPutbackName
TokenLoc	mPutbackLoc
bool	mStrictKeywords

Detailed Description

Scanner.

This class translate a char-stream to a token stream (delivered via parser-callbacks).

Member Enumeration Documentation

enum Compiler::Scanner::keyword

Enumerator
K_begin
K_end
K_short
K_long
K_float
K_if
K_endif
K_else
K_elseif
K_while
K_endwhile
K_return
K_messagebox
K_set
K_to
K_getsquareroot
K_menumode
K_random
K_startscript
K_stopscript
K_scriptrunning
K_getdistance
K_getsecondspassed
K_enable
K_disable
K_getdisabled

enum Compiler::Scanner::putback_type

private

Enumerator
Putback_None
Putback_Special
Putback_Integer
Putback_Float
Putback_Name
Putback_Keyword

enum Compiler::Scanner::special

Enumerator
S_newline
S_open
S_close
S_cmpEQ
S_cmpNE
S_cmpLT
S_cmpLE
S_cmpGT
S_cmpGE
S_plus
S_minus
S_mult
S_div
S_comma
S_ref
S_member

Constructor & Destructor Documentation

Compiler::Scanner::Scanner ( const Scanner &  )

private

Compiler::Scanner::Scanner	(	ErrorHandler &	errorHandler,
		std::istream &	inputStream,
		const Extensions *	extensions = 0
	)

constructor

Member Function Documentation

void Compiler::Scanner::enableStrictKeywords

(

)

Do not accept keywords in quotation marks anymore.

Attention

This mode lasts only until the next newline is reached.

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bool Compiler::Scanner::get ( char &  c )

private

bool Compiler::Scanner::isStringCharacter ( char  c, bool  lookAhead = true  )

private

Todo:

disable this when doing more stricter compiling

Todo:

disable this when doing more stricter compiling. Also, find out who is responsible for allowing it in the first place and meet up with that person in a dark alley.

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bool Compiler::Scanner::isWhitespace ( char  c )

staticprivate

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void Compiler::Scanner::listKeywords

(

std::vector< std::string > &

keywords

)

Append all known keywords to keywords.

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Scanner& Compiler::Scanner::operator= ( const Scanner &  )

private

void Compiler::Scanner::putback ( char  c )

private

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void Compiler::Scanner::putbackFloat	(	float	value,
		const TokenLoc &	loc
	)

put back a float token

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void Compiler::Scanner::putbackInt	(	int	value,
		const TokenLoc &	loc
	)

put back an integer token

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void Compiler::Scanner::putbackKeyword	(	int	keyword,
		const TokenLoc &	loc
	)

put back a keyword token

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void Compiler::Scanner::putbackName	(	const std::string &	name,
		const TokenLoc &	loc
	)

put back a name token

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void Compiler::Scanner::putbackSpecial	(	int	code,
		const TokenLoc &	loc
	)

put back a special token

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void Compiler::Scanner::scan

(

Parser &

parser

)

Scan a token and deliver it to the parser.

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bool Compiler::Scanner::scanFloat ( const std::string &  intValue, Parser &  parser, bool &  cont  )

private

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bool Compiler::Scanner::scanInt ( char  c, Parser &  parser, bool &  cont  )

private

workaround that allows names to begin with digits

Todo:

disable

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bool Compiler::Scanner::scanName ( char  c, Parser &  parser, bool &  cont  )

private

Todo:

optionally disable

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bool Compiler::Scanner::scanName ( std::string &  name )

private

Parameters

name	May contain the start of the name (one or more characters)

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bool Compiler::Scanner::scanSpecial ( char  c, Parser &  parser, bool &  cont  )

private

Todo:

option to disable the use of [ as alias for (

Todo:

option to disable the use of ] as alias for )

Todo:

hack to allow a space in comparison operators (add option to disable)

Allow = as synonym for ==.

Todo:

optionally disable for post-1.0 scripting improvements.

Todo:

hack to allow a space in comparison operators (add option to disable)

Workaround for some translator who apparently can't keep his minus in order

Todo:

disable for later script formats

Todo:

hack to allow a space in comparison operators (add option to disable)

Todo:

hack to allow a space in comparison operators (add option to disable)

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bool Compiler::Scanner::scanToken ( Parser &  parser )

private

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Member Data Documentation

ErrorHandler& Compiler::Scanner::mErrorHandler

private

const Extensions* Compiler::Scanner::mExtensions

private

TokenLoc Compiler::Scanner::mLoc

private

TokenLoc Compiler::Scanner::mPrevLoc

private

putback_type Compiler::Scanner::mPutback

private

int Compiler::Scanner::mPutbackCode

private

float Compiler::Scanner::mPutbackFloat

private

int Compiler::Scanner::mPutbackInteger

private

TokenLoc Compiler::Scanner::mPutbackLoc

private

std::string Compiler::Scanner::mPutbackName

private

std::istream& Compiler::Scanner::mStream

private

bool Compiler::Scanner::mStrictKeywords

private

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

• /home/travis/build/OpenMW/openmw/components/compiler/scanner.hpp
• /home/travis/build/OpenMW/openmw/components/compiler/scanner.cpp