exprtk::lexer::parser_helper Class Reference

#include <exprtk.hpp>

Inheritance diagram for exprtk::lexer::parser_helper:

Collaboration diagram for exprtk::lexer::parser_helper:

Public Types
enum	token_advance_mode { e_hold = 0 , e_advance = 1 }
typedef token	token_t
typedef generator	generator_t

Public Member Functions
bool	init (const std::string &str)
generator_t &	lexer ()
const generator_t &	lexer () const
void	store_token ()
void	restore_token ()
void	next_token ()
const token_t &	current_token () const
const token_t &	peek_next_token ()
void	advance_token (const token_advance_mode mode)
bool	token_is (const token_t::token_type &ttype, const token_advance_mode mode=e_advance)
bool	token_is (const token_t::token_type &ttype, const std::string &value, const token_advance_mode mode=e_advance)
bool	token_is (const std::string &value, const token_advance_mode mode=e_advance)
bool	token_is_arithmetic_opr (const token_advance_mode mode=e_advance)
bool	token_is_ineq_opr (const token_advance_mode mode=e_advance)
bool	token_is_left_bracket (const token_advance_mode mode=e_advance)
bool	token_is_right_bracket (const token_advance_mode mode=e_advance)
bool	token_is_loop (const token_advance_mode mode=e_advance)
bool	peek_token_is (const token_t::token_type &ttype)
bool	peek_token_is (const std::string &s)

Private Attributes
generator_t	lexer_
token_t	current_token_
token_t	store_current_token_

Detailed Description

Definition at line 4346 of file exprtk.hpp.

Member Typedef Documentation

generator_t

typedef generator exprtk::lexer::parser_helper::generator_t

Definition at line 4351 of file exprtk.hpp.

token_t

typedef token exprtk::lexer::parser_helper::token_t

Definition at line 4350 of file exprtk.hpp.

Member Enumeration Documentation

token_advance_mode

enum exprtk::lexer::parser_helper::token_advance_mode

Enumerator
e_hold
e_advance

Definition at line 4404 of file exprtk.hpp.

         {
            e_hold    = 0,
            e_advance = 1
         };

Member Function Documentation

advance_token()

void exprtk::lexer::parser_helper::advance_token ( const token_advance_mode  mode )

inline

Definition at line 4410 of file exprtk.hpp.

         {
            if (e_advance == mode)
            {
               next_token();
            }
         }

References e_advance, and next_token().

Referenced by token_is(), token_is(), token_is(), token_is_arithmetic_opr(), token_is_ineq_opr(), token_is_left_bracket(), and token_is_right_bracket().

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current_token()

const token_t & exprtk::lexer::parser_helper::current_token ( ) const

inline

Definition at line 4394 of file exprtk.hpp.

         {
            return current_token_;
         }

References current_token_.

Referenced by exprtk::parser< T >::compile(), exprtk::parser< T >::parse_assert_statement(), exprtk::parser< T >::parse_base_function_call(), exprtk::parser< T >::parse_base_operation(), exprtk::parser< T >::parse_branch(), exprtk::parser< T >::parse_break_statement(), exprtk::parser< T >::parse_conditional_statement(), exprtk::parser< T >::parse_conditional_statement_01(), exprtk::parser< T >::parse_conditional_statement_02(), exprtk::parser< T >::parse_const_string(), exprtk::parser< T >::parse_continue_statement(), exprtk::parser< T >::parse_corpus(), exprtk::parser< T >::parse_define_constvar_statement(), exprtk::parser< T >::parse_define_string_statement(), exprtk::parser< T >::parse_define_var_statement(), exprtk::parser< T >::parse_define_vector_statement(), exprtk::parser< T >::parse_expression(), exprtk::parser< T >::parse_for_loop(), exprtk::parser< T >::parse_function_call(), exprtk::parser< T >::parse_function_call_0(), exprtk::parser< T >::parse_function_invocation(), exprtk::parser< T >::type_checker::parse_function_prototypes(), exprtk::parser< T >::parse_generic_function_call(), exprtk::parser< T >::parse_igeneric_function_params(), exprtk::parser< T >::parse_multi_sequence(), exprtk::parser< T >::parse_multi_switch_statement(), exprtk::parser< T >::parse_not_statement(), exprtk::parser< T >::parse_overload_function_call(), exprtk::parser< T >::parse_range(), exprtk::parser< T >::parse_repeat_until_loop(), exprtk::parser< T >::parse_return_statement(), exprtk::parser< T >::parse_special_function(), exprtk::parser< T >::parse_string(), exprtk::parser< T >::parse_string_function_call(), exprtk::parser< T >::parse_string_range_statement(), exprtk::parser< T >::parse_swap_statement(), exprtk::parser< T >::parse_switch_statement(), exprtk::parser< T >::parse_symbol(), exprtk::parser< T >::parse_symtab_symbol(), exprtk::parser< T >::parse_ternary_conditional_statement(), exprtk::parser< T >::parse_uninitialised_var_statement(), exprtk::parser< T >::parse_vararg_function(), exprtk::parser< T >::parse_vararg_function_call(), exprtk::parser< T >::parse_vector(), exprtk::parser< T >::parse_vector_index(), exprtk::parser< T >::parse_while_loop(), exprtk::parser< T >::post_bracket_process(), exprtk::parser< T >::post_variable_process(), exprtk::parser< T >::parse_special_function_impl< Type, NumberOfParameters >::process(), expression_processor< T >::parse_function_definition_impl::process(), exprtk::parser< T >::simplify_unary_negation_branch(), exprtk::parser< T >::synthesize_vector_element(), token_is(), token_is(), token_is(), token_is_arithmetic_opr(), token_is_ineq_opr(), token_is_left_bracket(), token_is_right_bracket(), and exprtk::parser< T >::type_checker::verify().

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init()

bool exprtk::lexer::parser_helper::init ( const std::string &  str )

inline

Definition at line 4353 of file exprtk.hpp.

         {
            if (!lexer_.process(str))
            {
               return false;
            }
 
            lexer_.begin();
 
            next_token();
 
            return true;
         }

References exprtk::lexer::generator::begin(), lexer_, next_token(), and exprtk::lexer::generator::process().

Referenced by exprtk::parser< T >::compile(), and expression_processor< T >::parse_function_definition_impl::process().

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lexer() [1/2]

generator_t & exprtk::lexer::parser_helper::lexer ( )

inline

Definition at line 4367 of file exprtk.hpp.

         {
            return lexer_;
         }

References lexer_.

Referenced by exprtk::parser< T >::compile(), exprtk::parser< T >::construct_subexpr(), exprtk::parser< T >::parse_assert_statement(), exprtk::parser< T >::parse_corpus(), exprtk::parser< T >::post_bracket_process(), exprtk::parser< T >::post_variable_process(), expression_processor< T >::parse_function_definition_impl::process(), exprtk::parser< T >::process_lexer_errors(), and exprtk::parser< T >::run_assemblies().

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lexer() [2/2]

const generator_t & exprtk::lexer::parser_helper::lexer ( ) const

inline

Definition at line 4372 of file exprtk.hpp.

         {
            return lexer_;
         }

References lexer_.

next_token()

void exprtk::lexer::parser_helper::next_token ( )

inline

Definition at line 4389 of file exprtk.hpp.

         {
            current_token_ = lexer_.next_token();
         }

References current_token_, lexer_, and exprtk::lexer::generator::next_token().

Referenced by advance_token(), exprtk::parser< T >::compile(), init(), exprtk::parser< T >::parse_assert_statement(), exprtk::parser< T >::parse_base_function_call(), exprtk::parser< T >::parse_branch(), exprtk::parser< T >::parse_break_statement(), exprtk::parser< T >::parse_conditional_statement(), exprtk::parser< T >::parse_conditional_statement_02(), exprtk::parser< T >::parse_const_string(), exprtk::parser< T >::parse_continue_statement(), exprtk::parser< T >::parse_corpus(), exprtk::parser< T >::parse_define_var_statement(), exprtk::parser< T >::parse_expression(), exprtk::parser< T >::parse_for_loop(), exprtk::parser< T >::parse_function_call(), exprtk::parser< T >::parse_function_call_0(), exprtk::parser< T >::parse_generic_function_call(), exprtk::parser< T >::parse_multi_switch_statement(), exprtk::parser< T >::parse_null_statement(), exprtk::parser< T >::parse_overload_function_call(), exprtk::parser< T >::parse_repeat_until_loop(), exprtk::parser< T >::parse_return_statement(), exprtk::parser< T >::parse_string(), exprtk::parser< T >::parse_string_function_call(), exprtk::parser< T >::parse_swap_statement(), exprtk::parser< T >::parse_switch_statement(), exprtk::parser< T >::parse_symtab_symbol(), exprtk::parser< T >::parse_vararg_function(), exprtk::parser< T >::parse_vararg_function_call(), exprtk::parser< T >::parse_vector(), exprtk::parser< T >::parse_while_loop(), exprtk::parser< T >::post_bracket_process(), exprtk::parser< T >::parse_special_function_impl< Type, NumberOfParameters >::process(), and expression_processor< T >::parse_function_definition_impl::process().

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peek_next_token()

const token_t & exprtk::lexer::parser_helper::peek_next_token ( )

inline

Definition at line 4399 of file exprtk.hpp.

         {
            return lexer_.peek_next_token();
         }

References lexer_, and exprtk::lexer::generator::peek_next_token().

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peek_token_is() [1/2]

bool exprtk::lexer::parser_helper::peek_token_is ( const std::string &  s )

inline

Definition at line 4538 of file exprtk.hpp.

         {
            return (exprtk::details::imatch(lexer_.peek_next_token().value,s));
         }

References exprtk::details::imatch(), lexer_, exprtk::lexer::generator::peek_next_token(), and exprtk::lexer::token::value.

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peek_token_is() [2/2]

bool exprtk::lexer::parser_helper::peek_token_is ( const token_t::token_type &  ttype )

inline

Definition at line 4533 of file exprtk.hpp.

         {
            return (lexer_.peek_next_token().type == ttype);
         }

References lexer_, exprtk::lexer::generator::peek_next_token(), and exprtk::lexer::token::type.

Referenced by exprtk::parser< T >::parse_const_string(), exprtk::parser< T >::parse_define_vector_statement(), exprtk::parser< T >::parse_for_loop(), exprtk::parser< T >::parse_multi_sequence(), exprtk::parser< T >::parse_pending_vector_index_operator(), exprtk::parser< T >::parse_repeat_until_loop(), exprtk::parser< T >::parse_string(), exprtk::parser< T >::parse_swap_statement(), and exprtk::parser< T >::post_variable_process().

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restore_token()

void exprtk::lexer::parser_helper::restore_token ( )

inline

Definition at line 4383 of file exprtk.hpp.

         {
            lexer_.restore();
            current_token_ = store_current_token_;
         }

References current_token_, lexer_, exprtk::lexer::generator::restore(), and store_current_token_.

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store_token()

void exprtk::lexer::parser_helper::store_token ( )

inline

Definition at line 4377 of file exprtk.hpp.

         {
            lexer_.store();
            store_current_token_ = current_token_;
         }

References current_token_, lexer_, exprtk::lexer::generator::store(), and store_current_token_.

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token_is() [1/3]

bool exprtk::lexer::parser_helper::token_is ( const std::string &  value, const token_advance_mode  mode = e_advance  )

inline

Definition at line 4447 of file exprtk.hpp.

         {
            if (!exprtk::details::imatch(value,current_token().value))
            {
               return false;
            }
 
            advance_token(mode);
 
            return true;
         }

References advance_token(), current_token(), and exprtk::details::imatch().

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token_is() [2/3]

bool exprtk::lexer::parser_helper::token_is ( const token_t::token_type &  ttype, const std::string &  value, const token_advance_mode  mode = e_advance  )

inline

Definition at line 4430 of file exprtk.hpp.

         {
            if (
                 (current_token().type != ttype) ||
                 !exprtk::details::imatch(value,current_token().value)
               )
            {
               return false;
            }
 
            advance_token(mode);
 
            return true;
         }

References advance_token(), current_token(), and exprtk::details::imatch().

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token_is() [3/3]

bool exprtk::lexer::parser_helper::token_is ( const token_t::token_type &  ttype, const token_advance_mode  mode = e_advance  )

inline

Definition at line 4418 of file exprtk.hpp.

         {
            if (current_token().type != ttype)
            {
               return false;
            }
 
            advance_token(mode);
 
            return true;
         }

References advance_token(), and current_token().

Referenced by exprtk::parser< T >::parse_assert_statement(), exprtk::parser< T >::parse_base_function_call(), exprtk::parser< T >::parse_branch(), exprtk::parser< T >::parse_break_statement(), exprtk::parser< T >::parse_conditional_statement(), exprtk::parser< T >::parse_conditional_statement_01(), exprtk::parser< T >::parse_conditional_statement_02(), exprtk::parser< T >::parse_corpus(), exprtk::parser< T >::parse_define_constvar_statement(), exprtk::parser< T >::parse_define_var_statement(), exprtk::parser< T >::parse_define_vector_statement(), exprtk::parser< T >::parse_expression(), exprtk::parser< T >::parse_for_loop(), exprtk::parser< T >::parse_function_call(), exprtk::parser< T >::parse_function_call_0(), exprtk::parser< T >::parse_generic_function_call(), exprtk::parser< T >::parse_igeneric_function_params(), exprtk::parser< T >::parse_multi_sequence(), exprtk::parser< T >::parse_multi_switch_statement(), exprtk::parser< T >::parse_pending_string_rangesize(), exprtk::parser< T >::parse_pending_vector_index_operator(), exprtk::parser< T >::parse_range(), exprtk::parser< T >::parse_repeat_until_loop(), exprtk::parser< T >::parse_return_statement(), exprtk::parser< T >::parse_string_range_statement(), exprtk::parser< T >::parse_swap_statement(), exprtk::parser< T >::parse_switch_statement(), exprtk::parser< T >::parse_ternary_conditional_statement(), exprtk::parser< T >::parse_uninitialised_var_statement(), exprtk::parser< T >::parse_vararg_function(), exprtk::parser< T >::parse_vararg_function_call(), exprtk::parser< T >::parse_vector(), exprtk::parser< T >::parse_vector_index(), exprtk::parser< T >::parse_while_loop(), exprtk::parser< T >::post_bracket_process(), exprtk::parser< T >::parse_special_function_impl< Type, NumberOfParameters >::process(), expression_processor< T >::parse_function_definition_impl::process(), and token_is_loop().

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token_is_arithmetic_opr()

bool exprtk::lexer::parser_helper::token_is_arithmetic_opr ( const token_advance_mode  mode = e_advance )

inline

Definition at line 4460 of file exprtk.hpp.

         {
            switch (current_token().type)
            {
               case token_t::e_add :
               case token_t::e_sub :
               case token_t::e_div :
               case token_t::e_mul :
               case token_t::e_mod :
               case token_t::e_pow : break;
               default             : return false;
            }
 
            advance_token(mode);
 
            return true;
         }

References advance_token(), current_token(), exprtk::lexer::token::e_add, exprtk::lexer::token::e_div, exprtk::lexer::token::e_mod, exprtk::lexer::token::e_mul, exprtk::lexer::token::e_pow, and exprtk::lexer::token::e_sub.

Referenced by exprtk::parser< T >::parse_conditional_statement_02().

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token_is_ineq_opr()

bool exprtk::lexer::parser_helper::token_is_ineq_opr ( const token_advance_mode  mode = e_advance )

inline

Definition at line 4478 of file exprtk.hpp.

         {
            switch (current_token().type)
            {
               case token_t::e_eq  :
               case token_t::e_lte :
               case token_t::e_ne  :
               case token_t::e_gte :
               case token_t::e_lt  :
               case token_t::e_gt  : break;
               default             : return false;
            }
 
            advance_token(mode);
 
            return true;
         }

References advance_token(), current_token(), exprtk::lexer::token::e_eq, exprtk::lexer::token::e_gt, exprtk::lexer::token::e_gte, exprtk::lexer::token::e_lt, exprtk::lexer::token::e_lte, and exprtk::lexer::token::e_ne.

Referenced by exprtk::parser< T >::parse_conditional_statement_02().

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token_is_left_bracket()

bool exprtk::lexer::parser_helper::token_is_left_bracket ( const token_advance_mode  mode = e_advance )

inline

Definition at line 4496 of file exprtk.hpp.

         {
            switch (current_token().type)
            {
               case token_t::e_lbracket    :
               case token_t::e_lcrlbracket :
               case token_t::e_lsqrbracket : break;
               default                     : return false;
            }
 
            advance_token(mode);
 
            return true;
         }

References advance_token(), current_token(), exprtk::lexer::token::e_lbracket, exprtk::lexer::token::e_lcrlbracket, and exprtk::lexer::token::e_lsqrbracket.

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token_is_loop()

bool exprtk::lexer::parser_helper::token_is_loop ( const token_advance_mode  mode = e_advance )

inline

Definition at line 4526 of file exprtk.hpp.

         {
            return token_is("for"   , mode) ||
                   token_is("while" , mode) ||
                   token_is("repeat", mode) ;
         }

References token_is().

Referenced by exprtk::parser< T >::parse_conditional_statement_02().

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token_is_right_bracket()

bool exprtk::lexer::parser_helper::token_is_right_bracket ( const token_advance_mode  mode = e_advance )

inline

Definition at line 4511 of file exprtk.hpp.

         {
            switch (current_token().type)
            {
               case token_t::e_rbracket    :
               case token_t::e_rcrlbracket :
               case token_t::e_rsqrbracket : break;
               default                     : return false;
            }
 
            advance_token(mode);
 
            return true;
         }

References advance_token(), current_token(), exprtk::lexer::token::e_rbracket, exprtk::lexer::token::e_rcrlbracket, and exprtk::lexer::token::e_rsqrbracket.

Referenced by exprtk::parser< T >::parse_conditional_statement_02().

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Member Data Documentation

current_token_

token_t exprtk::lexer::parser_helper::current_token_

private

Definition at line 4546 of file exprtk.hpp.

Referenced by current_token(), next_token(), restore_token(), and store_token().

lexer_

generator_t exprtk::lexer::parser_helper::lexer_

private

Definition at line 4545 of file exprtk.hpp.

Referenced by init(), lexer(), lexer(), next_token(), peek_next_token(), peek_token_is(), peek_token_is(), restore_token(), and store_token().

store_current_token_

token_t exprtk::lexer::parser_helper::store_current_token_

private

Definition at line 4547 of file exprtk.hpp.

Referenced by restore_token(), and store_token().

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

• exprtk/exprtk.hpp