SlamParser::Driver Class Reference

#include <driver.h>

Collaboration diagram for SlamParser::Driver:

Public Member Functions
	Driver (class SlamContext &slamContext_)
	construct a new parser driver context
bool	parse_stream (std::istream &in, const std::string &sname="stream input")
bool	parse_string (const std::string &input, const std::string &sname="string stream")
bool	parse_file (const std::string &filename)
void	error (const class location &l, const std::string &m)
void	error (const std::string &m)

Public Attributes
bool	trace_scanning
	enable debug output in the flex scanner
bool	trace_parsing
	enable debug output in the bison parser
std::string	streamname
	stream name (file or input stream) used for error messages.
class Scanner *	lexer
class SlamContext &	slamContext

Detailed Description

Definition at line 37 of file driver.h.

Constructor & Destructor Documentation

Driver()

SlamParser::Driver::Driver

(

class SlamContext &

slamContext_

)

construct a new parser driver context

Definition at line 37 of file driver.cpp.

    : trace_scanning(false),
      trace_parsing(false),
      lexer(nullptr),
      slamContext(slamContext_) {}

Member Function Documentation

error() [1/2]

void SlamParser::Driver::error	(	const class location &	l,
		const std::string &	m
	)

Error handling with associated line number. This can be modified to output the error e.g. to a dialog box.

Definition at line 68 of file driver.cpp.

                                                              {
  std::cerr << l << ": " << m << std::endl;
}

error() [2/2]

void SlamParser::Driver::error

(

const std::string &

m

)

General error handling. This can be modified to output the error e.g. to a dialog box.

Definition at line 72 of file driver.cpp.

{ std::cerr << m << std::endl; }

parse_file()

bool SlamParser::Driver::parse_file

(

const std::string &

filename

)

Invoke the scanner and parser on a file. Use parse_stream with a std::ifstream if detection of file reading errors is required.

Parameters

filename

input file name

Returns

true if successfully parsed

Definition at line 57 of file driver.cpp.

                                                 {
  std::ifstream in(filename.c_str());
  if (!in.good()) return false;
  return parse_stream(in, filename);
}

References parse_stream().

parse_stream()

bool SlamParser::Driver::parse_stream	(	std::istream &	in,
		const std::string &	sname = "stream input"
	)

Invoke the scanner and parser for a stream.

Parameters

in	input stream
sname	stream name for error messages

Returns

true if successfully parsed

Definition at line 43 of file driver.cpp.

                                                                {
  streamname = sname;
 
  Scanner scanner(&in);
  scanner.set_debug(trace_scanning);
  this->lexer = &scanner;
 
  Parser parser(*this);
#if YYDEBUG
  parser.set_debug_level(trace_parsing);
#endif
  return (parser.parse() == 0);
}

References lexer, SlamParser::Parser::parse(), SlamParser::Scanner::set_debug(), streamname, trace_parsing, and trace_scanning.

Referenced by main(), parse_file(), parse_string(), and SlamParser::ParserInterface::parseCommand().

parse_string()

bool SlamParser::Driver::parse_string	(	const std::string &	input,
		const std::string &	sname = "string stream"
	)

Invoke the scanner and parser on an input string.

Parameters

input	input string
sname	stream name for error messages

Returns

true if successfully parsed

Definition at line 63 of file driver.cpp.

                                                                        {
  std::istringstream iss(input);
  return parse_stream(iss, sname);
}

References parse_stream().

Member Data Documentation

lexer

class Scanner* SlamParser::Driver::lexer

Pointer to the current lexer instance, this is used to connect the parser to the scanner. It is used in the yylex macro.

Definition at line 88 of file driver.h.

Referenced by parse_stream().

slamContext

class SlamContext& SlamParser::Driver::slamContext

Reference to the calculator context filled during parsing of the expressions.

Definition at line 92 of file driver.h.

Referenced by SlamParser::Parser::parse().

streamname

std::string SlamParser::Driver::streamname

stream name (file or input stream) used for error messages.

Definition at line 49 of file driver.h.

Referenced by SlamParser::Parser::parse(), and parse_stream().

trace_parsing

bool SlamParser::Driver::trace_parsing

enable debug output in the bison parser

Definition at line 46 of file driver.h.

Referenced by main(), and parse_stream().

trace_scanning

bool SlamParser::Driver::trace_scanning

enable debug output in the flex scanner

Definition at line 43 of file driver.h.

Referenced by main(), and parse_stream().

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

• /build/reproducible-path/g2o-0~20230806/g2o/examples/interactive_slam/slam_parser/parser/driver.h
• /build/reproducible-path/g2o-0~20230806/g2o/examples/interactive_slam/slam_parser/parser/driver.cpp