symbol_table Struct Reference

Static Public Member Functions
static void	PutSymbol (const std::string &identifier, const std::string &regex)
	Adds a terminal symbol with its associated regex to the symbol table.
static void	PutSymbol (const std::string &identifier)
	Adds a non-terminal symbol to the symbol table.
static bool	In (const std::string &s)
	Checks if a symbol exists in the symbol table.
static bool	IsTerminal (const std::string &s)
	Checks if a symbol is a terminal.
static std::string	GetValue (const std::string &terminal)
	Retrieves the regex pattern for a terminal symbol.
static void	Debug ()
	Prints all symbols and their properties in the symbol table.
static void	SetEol (const std::string &eol)
	Sets the end-of-line symbol.

Static Public Attributes
static std::string	EOL_ {"$"}
	End-of-line symbol used in parsing, initialized as "$".
static std::string	EPSILON_ {"EPSILON"}
	Epsilon symbol, representing empty transitions, initialized as "EPSILON".
static std::unordered_map< std::string, std::pair< symbol_type, std::string > >	st_ {{EOL_, {TERMINAL, EOL_}}, {EPSILON_, {TERMINAL, EPSILON_}}}
	Main symbol table, mapping identifiers to a pair of symbol type and its regex.
static std::unordered_map< std::string, unsigned long >	token_types_
	Token types, mapping each symbol to a unique integer ID.
static std::unordered_map< unsigned long, std::string >	token_types_r_
	Reverse mapping from integer token IDs back to symbols.
static std::vector< unsigned long >	order_ {1}
	Tracks insertion order of token types.
static unsigned long	i_ {2}
	Current index for assigning new token IDs, starting from 2.

Member Function Documentation

Debug()

void symbol_table::Debug ( )

static

Prints all symbols and their properties in the symbol table.

Outputs the symbol table for debugging purposes.

GetValue()

std::string symbol_table::GetValue ( const std::string & terminal )

static

Retrieves the regex pattern for a terminal symbol.

Parameters

terminal

Terminal symbol identifier.

Returns

Regex pattern associated with the terminal symbol.

In()

bool symbol_table::In ( const std::string & s )

static

Checks if a symbol exists in the symbol table.

Parameters

s	Symbol identifier to search.

Returns

true if the symbol is present, otherwise false.

IsTerminal()

bool symbol_table::IsTerminal ( const std::string & s )

static

Checks if a symbol is a terminal.

Parameters

s	Symbol identifier to check.

Returns

true if the symbol is terminal, otherwise false.

PutSymbol() [1/2]

void symbol_table::PutSymbol ( const std::string & identifier )

static

Adds a non-terminal symbol to the symbol table.

Parameters

identifier

Name of the non-terminal symbol.

PutSymbol() [2/2]

void symbol_table::PutSymbol ( const std::string & identifier, const std::string & regex )

static

Adds a terminal symbol with its associated regex to the symbol table.

Updates the token type mappings and tracks insertion order.

Parameters

identifier	Name of the terminal symbol.
regex	Regular expression representing the terminal symbol.

SetEol()

void symbol_table::SetEol ( const std::string & eol )

static

Sets the end-of-line symbol.

Parameters

eol	String to use as the new end-of-line symbol.

Member Data Documentation

token_types_

std::unordered_map<std::string, unsigned long> symbol_table::token_types_

inlinestatic

Initial value:

{
        {EOL_, 1}}

Token types, mapping each symbol to a unique integer ID.

token_types_r_

std::unordered_map<unsigned long, std::string> symbol_table::token_types_r_

inlinestatic

Initial value:

{
        {1, EOL_}}

Reverse mapping from integer token IDs back to symbols.

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

• include/symbol_table.hpp
• src/symbol_table.cpp