interp Namespace Reference

Struct and functions implementing the interpreter. More...

Classes
struct	BaseFrame
struct	BuiltinFrame
	Type of frame used when invoking builtin functions (see 'val::BuiltinG'). More...
struct	ClosureFrame
	Type of frame used when invoking functions defined in R (see 'val::VClos'). More...
struct	EvalException
struct	Frame
	The default frame associated with an interpretation context. More...
struct	FutureException
struct	Kont
struct	RemoteErrorException
struct	ShadowFrame

Typedefs
typedef std::shared_ptr< BaseFrame >	shpfrm

Functions
shared_ptr< Kont >	step (shared_ptr< Kont > &k, vector< shpfrm > &frameStack, zcore::InterpCtx &ic)
shared_ptr< Kont >	buildElChain (const ElNode *eln, unsigned n, shared_ptr< BaseFrame > r, shared_ptr< Kont > &k)
std::string	errorLines (const yy::location &loc, unsigned nlinesBefore)

Detailed Description

Struct and functions implementing the interpreter.

Function Documentation

errorLines()

std::string interp::errorLines	(	const yy::location &	loc,
		unsigned	nlinesBefore
	)

Builds a string extracting from 'loc' the 'nlinesBefore' and 'nlinesAfter' together with the erorr line and a line underneath pointing to the error.

step()

shared_ptr< Kont > interp::step	(	shared_ptr< Kont > &	k,
		vector< shpfrm > &	frameStack,
		zcore::InterpCtx &	ic
	)

Evaluate the current continuation and return (i.e. step through one continuation and then return). From the point of view of the interpreter, the current state and what needs to be interpreted is entirely defined in the continuation 'k' and the frame stack. The calling context 'ic' is used when the interpreter is required to send out a query (the context is needed to generate the message with the appropriate identifiers, etc.).