RTT::scripting::ExpressionParser Class Reference

How we parse: this parser works like a stack-based RPN calculator. More...

#include <rtt/scripting/ExpressionParser.hpp>

Public Member Functions
	ExpressionParser (TaskContext *pc, ExecutionEngine *caller, CommonParser &common_parser)
	~ExpressionParser ()
rule_t &	parser ()
base::DataSourceBase::shared_ptr	getResult ()
boost::shared_ptr< base::AttributeBase >	getHandle ()
	In case the parsed result returns a SendHandle, ask the parser to also create a handle for it. More...
void	dropResult ()
bool	hasResult ()

Detailed Description

How we parse: this parser works like a stack-based RPN calculator.

An atomic expression pushes one internal::DataSource up the stack, a binary expression pops two DataSources, and pushes a new one, a unary pops one, and pushes one etc. This allows for the reentrancy we need..

Definition at line 140 of file ExpressionParser.hpp.

Constructor & Destructor Documentation

RTT::ExpressionParser::ExpressionParser	(	TaskContext *	pc,
		ExecutionEngine *	caller,
		CommonParser &	common_parser
	)

Definition at line 332 of file ExpressionParser.cpp.

References RTT::scripting::DataCallParser::getParseHandle(), RTT::scripting::DataCallParser::getParseResult(), RTT::scripting::ConstructorParser::getParseResult(), RTT::scripting::CommonParser::identchar, RTT::scripting::CommonParser::identifier, RTT::scripting::CommonParser::keyword, RTT::scripting::ValueParser::lastParsed(), RTT::scripting::DataCallParser::parser(), RTT::scripting::ValueParser::parser(), RTT::scripting::ConstructorParser::parser(), and RTT::scripting::CommonParser::skipeol.

RTT::ExpressionParser::~ExpressionParser

(

)

Definition at line 569 of file ExpressionParser.cpp.

Member Function Documentation

void RTT::ExpressionParser::dropResult

(

)

Definition at line 697 of file ExpressionParser.cpp.

Referenced by RTT::scripting::ArgumentsParser::ArgumentsParser(), RTT::scripting::Parser::parseExpression(), RTT::scripting::ProgramGraphParser::parseFunction(), RTT::scripting::ProgramGraphParser::parserUsed(), RTT::scripting::StateGraphParser::storeOffset(), RTT::scripting::ValueChangeParser::ValueChangeParser(), and RTT::scripting::ConditionParser::~ConditionParser().

boost::shared_ptr< AttributeBase > RTT::ExpressionParser::getHandle

(

)

In case the parsed result returns a SendHandle, ask the parser to also create a handle for it.

Returns

null pointer if no handle could be made.

Definition at line 588 of file ExpressionParser.cpp.

References RTT::TaskContext::attributes(), RTT::base::AttributeBase::getDataSource(), RTT::ConfigurationInterface::getValues(), RTT::ConfigurationInterface::removeAttribute(), RTT::base::AttributeBase::setName(), and RTT::ConfigurationInterface::setValue().

DataSourceBase::shared_ptr RTT::ExpressionParser::getResult

(

)

Definition at line 582 of file ExpressionParser.cpp.

Referenced by RTT::scripting::ArgumentsParser::ArgumentsParser(), RTT::scripting::Parser::parseExpression(), RTT::scripting::ProgramGraphParser::parseFunction(), RTT::scripting::ProgramGraphParser::parserUsed(), RTT::scripting::StateGraphParser::storeOffset(), RTT::scripting::ValueChangeParser::ValueChangeParser(), and RTT::scripting::ConditionParser::~ConditionParser().

bool RTT::scripting::ExpressionParser::hasResult ( )

inline

Definition at line 218 of file ExpressionParser.hpp.

Referenced by RTT::scripting::Parser::parseExpression(), and RTT::scripting::ValueChangeParser::ValueChangeParser().

rule_t & RTT::ExpressionParser::parser

(

)

Definition at line 577 of file ExpressionParser.cpp.

Referenced by RTT::scripting::ArgumentsParser::ArgumentsParser(), RTT::scripting::ConditionParser::ConditionParser(), RTT::scripting::Parser::parseExpression(), RTT::scripting::StateGraphParser::StateGraphParser(), RTT::scripting::ValueChangeParser::ValueChangeParser(), and RTT::scripting::ProgramGraphParser::~ProgramGraphParser().

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

• rtt/scripting/ExpressionParser.hpp
• rtt/scripting/ExpressionParser.cpp