Vcsn  2.2
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vcsn::ast::context_parser Class Reference

#include <context-parser.hh>

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Public Member Functions

 context_parser (std::istringstream &is)
 
std::shared_ptr< ast_nodeparse ()
 Accept anything. More...
 
std::shared_ptr< ast_nodeparse_context ()
 Accept only a valid context. More...
 

Private Member Functions

void skip_space_ ()
 Skip white spaces. More...
 
int peek_ ()
 The next character, possibly preceded by spaces. More...
 
char eat_ (char c)
 Accept this character, possibly preceded by spaces. More...
 
const std::string & eat_ (const std::string &s)
 Accept this string, possibly preceded by spaces. More...
 
void check_eof_ (std::shared_ptr< ast_node > res)
 We managed to read res in is, check that is_ is finished. More...
 
std::string word_ ()
 The next word in the stream. More...
 
std::string parameters_ ()
 The next parameters in the stream. More...
 
std::shared_ptr< ast_nodeany_ ()
 Accept anything. More...
 
std::shared_ptr< const gensetgenset_ ()
 An optional generator set in brackets (e.g., <char_letters(abc)> or <char>). More...
 
std::shared_ptr< const gensetgenset_ (std::string letter_type)
 A generator set (e.g., char_letters(abc) or char). More...
 
std::shared_ptr< contextcontext_ ()
 <LabelSet>, <WeightSet>. More...
 
std::shared_ptr< contextcontext_ (std::string word)
 
std::shared_ptr< ast_nodelabelset_ ()
 <LabelSet>. More...
 
std::shared_ptr< ast_nodelabelset_ (const std::string &kind)
 
std::shared_ptr< ast_nodeweightset_ ()
 <WeightSet>. More...
 
std::shared_ptr< ast_nodeweightset_ (const std::string &ws)
 
std::shared_ptr< automatonautomaton_ ()
 <Automaton> "\<" <Context> "\>". More...
 
std::shared_ptr< automatonautomaton_ (std::string prefix)
 
std::shared_ptr< tupletuple_ ()
 "\<" (<Any> ",")* "\>". More...
 
std::shared_ptr< tuplesettupleset_ ()
 "\<" (<LabelSet> | <WeightSet> ",")+ "\>". More...
 
std::shared_ptr< expressionsetexpressionset_ ()
 "expressionset" "\<" <Context> "\>", possibly followed by identities. More...
 
std::shared_ptr< expressionsetseriesset_ ()
 No optional argument. More...
 
std::shared_ptr< expansionsetexpansionset_ ()
 "expansionset" "\<" <Expressionset> "\>". More...
 
std::shared_ptr< polynomialsetpolynomialset_ ()
 "polynomialset" "\<" <Context> "\>". More...
 
std::shared_ptr< ast_nodelabelset_or_weightset_ ()
 <LabelSet> | <WeightSet> More...
 
std::shared_ptr< ast_nodelabelset_or_weightset_ (const std::string &kind)
 

Private Attributes

std::istringstream & is_
 The stream we are parsing. More...
 
std::set< std::string > weightsets_
 The set of terminal weightset names. More...
 
std::set< std::string > labelsets_
 The set of weightset names. More...
 

Detailed Description

Definition at line 15 of file context-parser.hh.

Constructor & Destructor Documentation

vcsn::ast::context_parser::context_parser ( std::istringstream &  is)
inline

Definition at line 18 of file context-parser.hh.

Member Function Documentation

std::shared_ptr< ast_node > vcsn::ast::context_parser::any_ ( )
private

Accept anything.

Definition at line 103 of file context-parser.cc.

References automaton_(), context_(), expansionset_(), expressionset_(), vcsn::has(), labelset_(), labelsets_, parameters_(), peek_(), polynomialset_(), seriesset_(), tuple_(), tupleset_(), weightset_(), weightsets_, and word_().

Referenced by automaton_(), parse(), and tuple_().

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std::shared_ptr< automaton > vcsn::ast::context_parser::automaton_ ( )
private

<Automaton> "\<" <Context> "\>".

Definition at line 294 of file context-parser.cc.

References word_().

Referenced by any_(), and automaton_().

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std::shared_ptr< automaton > vcsn::ast::context_parser::automaton_ ( std::string  prefix)
private

Definition at line 300 of file context-parser.cc.

References any_(), automaton_(), context_(), eat_(), expressionset_(), peek_(), vcsn::prefix(), vcsn::str_escape(), and word_().

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void vcsn::ast::context_parser::check_eof_ ( std::shared_ptr< ast_node res)
private

We managed to read res in is, check that is_ is finished.

Definition at line 39 of file context-parser.cc.

References vcsn::fail_reading(), is_, and peek_().

Referenced by parse(), and parse_context().

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std::shared_ptr< context > vcsn::ast::context_parser::context_ ( )
private

<LabelSet>, <WeightSet>.

Definition at line 204 of file context-parser.cc.

References word_().

Referenced by any_(), automaton_(), expressionset_(), parse_context(), polynomialset_(), and seriesset_().

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std::shared_ptr< context > vcsn::ast::context_parser::context_ ( std::string  word)
private

Definition at line 210 of file context-parser.cc.

References eat_(), labelset_(), weightset_(), and word_().

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char vcsn::ast::context_parser::eat_ ( char  c)
private

Accept this character, possibly preceded by spaces.

Definition at line 27 of file context-parser.cc.

References vcsn::eat(), is_, and skip_space_().

Referenced by automaton_(), context_(), expansionset_(), expressionset_(), genset_(), labelset_(), parameters_(), polynomialset_(), seriesset_(), tuple_(), and tupleset_().

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const std::string & vcsn::ast::context_parser::eat_ ( const std::string &  s)
private

Accept this string, possibly preceded by spaces.

Definition at line 33 of file context-parser.cc.

References vcsn::eat(), is_, and skip_space_().

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std::shared_ptr< expansionset > vcsn::ast::context_parser::expansionset_ ( )
private

"expansionset" "\<" <Expressionset> "\>".

Definition at line 443 of file context-parser.cc.

References eat_(), and expressionset_().

Referenced by any_().

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std::shared_ptr< expressionset > vcsn::ast::context_parser::expressionset_ ( )
private

"expressionset" "\<" <Context> "\>", possibly followed by identities.

Definition at line 418 of file context-parser.cc.

References context_(), eat_(), vcsn::rat::ids(), is_, and peek_().

Referenced by any_(), automaton_(), expansionset_(), labelset_(), labelset_or_weightset_(), and weightset_().

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std::shared_ptr< const genset > vcsn::ast::context_parser::genset_ ( )
private

An optional generator set in brackets (e.g., <char_letters(abc)> or <char>).

Defaults to <char> if the stream does not start with <.

Definition at line 191 of file context-parser.cc.

References eat_(), peek_(), and word_().

Referenced by labelset_().

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std::shared_ptr< const genset > vcsn::ast::context_parser::genset_ ( std::string  letter_type)
private

A generator set (e.g., char_letters(abc) or char).

Parameters
letter_typeshould be char_letter, or char, etc.

Definition at line 166 of file context-parser.cc.

References is_, peek_(), and vcsn::require().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::labelset_ ( )
private

<LabelSet>.

Definition at line 227 of file context-parser.cc.

References word_().

Referenced by any_(), context_(), labelset_(), and labelset_or_weightset_().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::labelset_ ( const std::string &  kind)
private

Definition at line 233 of file context-parser.cc.

References eat_(), expressionset_(), genset_(), labelset_(), seriesset_(), vcsn::str_escape(), and tupleset_().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::labelset_or_weightset_ ( )
private

<LabelSet> | <WeightSet>

Definition at line 143 of file context-parser.cc.

References word_().

Referenced by tupleset_().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::labelset_or_weightset_ ( const std::string &  kind)
private

Definition at line 149 of file context-parser.cc.

References expressionset_(), vcsn::has(), labelset_(), labelsets_, seriesset_(), tupleset_(), weightset_(), and weightsets_.

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std::string vcsn::ast::context_parser::parameters_ ( )
private

The next parameters in the stream.

Must be right before the opening <. Will return up to the matching >. Skips spaces.

Definition at line 70 of file context-parser.cc.

References eat_(), is_, and peek_().

Referenced by any_().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::parse ( )

Accept anything.

Definition at line 89 of file context-parser.cc.

References any_(), and check_eof_().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::parse_context ( )

Accept only a valid context.

Definition at line 96 of file context-parser.cc.

References check_eof_(), and context_().

Referenced by vcsn::ast::normalize_context().

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int vcsn::ast::context_parser::peek_ ( )
private

The next character, possibly preceded by spaces.

Definition at line 21 of file context-parser.cc.

References is_, and skip_space_().

Referenced by any_(), automaton_(), check_eof_(), expressionset_(), genset_(), parameters_(), tuple_(), and tupleset_().

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std::shared_ptr< polynomialset > vcsn::ast::context_parser::polynomialset_ ( )
private

"polynomialset" "\<" <Context> "\>".

Definition at line 452 of file context-parser.cc.

References context_(), and eat_().

Referenced by any_(), and weightset_().

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std::shared_ptr< expressionset > vcsn::ast::context_parser::seriesset_ ( )
private

No optional argument.

Definition at line 434 of file context-parser.cc.

References context_(), vcsn::rat::identities::distributive, and eat_().

Referenced by any_(), labelset_(), labelset_or_weightset_(), and weightset_().

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void vcsn::ast::context_parser::skip_space_ ( )
private

Skip white spaces.

Definition at line 15 of file context-parser.cc.

References is_.

Referenced by eat_(), peek_(), and word_().

std::shared_ptr< tuple > vcsn::ast::context_parser::tuple_ ( )
private

"\<" (<Any> ",")* "\>".

Definition at line 388 of file context-parser.cc.

References any_(), eat_(), and peek_().

Referenced by any_().

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std::shared_ptr< tupleset > vcsn::ast::context_parser::tupleset_ ( )
private

"\<" (<LabelSet> | <WeightSet> ",")+ "\>".

Definition at line 403 of file context-parser.cc.

References eat_(), labelset_or_weightset_(), and peek_().

Referenced by any_(), labelset_(), labelset_or_weightset_(), and weightset_().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::weightset_ ( )
private

<WeightSet>.

Definition at line 271 of file context-parser.cc.

References word_().

Referenced by any_(), context_(), and labelset_or_weightset_().

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std::shared_ptr< ast_node > vcsn::ast::context_parser::weightset_ ( const std::string &  ws)
private

Definition at line 277 of file context-parser.cc.

References expressionset_(), vcsn::has(), polynomialset_(), seriesset_(), vcsn::str_escape(), tupleset_(), and weightsets_.

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std::string vcsn::ast::context_parser::word_ ( )
private

The next word in the stream.

Does not consider that underscore is word-constituent. Skips spaces.

Definition at line 52 of file context-parser.cc.

References is_, and skip_space_().

Referenced by any_(), automaton_(), context_(), genset_(), labelset_(), labelset_or_weightset_(), and weightset_().

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Member Data Documentation

std::istringstream& vcsn::ast::context_parser::is_
private

The stream we are parsing.

Definition at line 103 of file context-parser.hh.

Referenced by check_eof_(), eat_(), expressionset_(), genset_(), parameters_(), peek_(), skip_space_(), and word_().

std::set<std::string> vcsn::ast::context_parser::labelsets_
private
Initial value:
=
{
"lal",
"lal_char",
"lan",
"lan_char",
"lao",
"law",
"law_char",
"letterset",
"nullableset",
"wordset",
}

The set of weightset names.

Definition at line 121 of file context-parser.hh.

Referenced by any_(), and labelset_or_weightset_().

std::set<std::string> vcsn::ast::context_parser::weightsets_
private
Initial value:
=
{
"b",
"f2",
"log",
"nmin",
"q",
"qmp",
"r",
"rmin",
"z",
"zmin",
}

The set of terminal weightset names.

Definition at line 106 of file context-parser.hh.

Referenced by any_(), labelset_or_weightset_(), and weightset_().


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