expression_ldl Class Reference

#include <ldl.h>

Inheritance diagram for expression_ldl:

List of all members.

Public Member Functions
virtual	~expression_ldl ()
	expression_ldl (const location &locn, const type::pointer &type, unsigned offset, translator_compile *cntxt)
Protected Member Functions
void	traversal (int pprec)
expression::pointer	optimize () const
void	logical_traversal (int pprec, label::pointer &true_branch, label::pointer &false_branch, bool fall_through_preference)
int	get_precedence () const
type::pointer	get_type () const
bool	is_lvalue () const
side_effect_t	has_side_effect () const
Private Member Functions
	expression_ldl ()
	expression_ldl (const expression_ldl &)
expression_ldl &	operator= (const expression_ldl &)
Private Attributes
translator_compile &	code
type::pointer	type
unsigned	offset

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Detailed Description

The expression_ldl class is used to represent an LDL (load local word) opcode.

Definition at line 32 of file ldl.h.

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Constructor & Destructor Documentation

virtual expression_ldl::~expression_ldl

(

)

[virtual]

The destructor.

expression_ldl::expression_ldl	(	const location &	locn,
		const type::pointer &	type,
		unsigned	offset,
		translator_compile *	cntxt
	)

The constructor.

Parameters:

	locn	source location of this code
	type	the type of expression resulting from this code
	offset	the stack frame offset argument of this opcode
	cntxt	where to send our generated code

expression_ldl::expression_ldl

(

)

[private]

The default constructor. Do not use.

expression_ldl::expression_ldl

(

const expression_ldl &

)

[private]

The copy constructor. Do not use.

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Member Function Documentation

void expression_ldl::traversal

(

int

pprec

)

[protected, virtual]

The traversal method may be used to traverse each of the declaractions in the list.

Parameters:

pprec

The precedence of the parent expression node.

Implements expression.

expression::pointer expression_ldl::optimize

(

)

const [protected, virtual]

The optimize method may be used to evaluate constant expressions, or substitute more efficient expressions.

This is intended to be called by the translator:: expression_statement method, or similar, where the expression is in its final form, and will get no deeper. In other words, when all available information has been provided.

There is no default implementation, even though most optimize implementations return self(), because this gives the compiler no opportunity to remind the authors of new classes that they have forgotten something.

Returns:

If the expression tree is not constant, or it is already as reduced as it can get, it returns itself. Otherwise, it returns a new expression node.

Implements expression.

void expression_ldl::logical_traversal	(	int	pprec,
		label::pointer &	true_branch,
		label::pointer &	false_branch,
		bool	fall_through_preference
	)			[protected]

int expression_ldl::get_precedence

(

)

const [protected, virtual]

The get_precedence method is used to obtain the precedence of this expression node.

The highest precedence has the highest absolute value, the lowest precedence gets the lowest absolute value.

Implements expression.

type::pointer expression_ldl::get_type

(

)

const [protected, virtual]

The get_type method is used to get the type of this expression.

Implements expression.

bool expression_ldl::is_lvalue

(

)

const [protected, virtual]

The is_lvalue method is used to determine whether or not this expression is suitable to appear on the left hand side of an assignment expression.

Implements expression.

side_effect_t expression_ldl::has_side_effect

(

)

const [protected, virtual]

The has_side_effect method is used to determine if an expression has any effect. It is used by the parse to produce "statement with no effect" warnings.

Implements expression.

expression_ldl& expression_ldl::operator=

(

const expression_ldl &

)

[private]

The assignment operator. Do not use.

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Member Data Documentation

translator_compile& expression_ldl::code [private]

The code instance variable is used to remember where to send our generated code.

Definition at line 84 of file ldl.h.

type::pointer expression_ldl::type [private]

The type instance variable is used to remember the type of this expression.

Definition at line 90 of file ldl.h.

unsigned expression_ldl::offset [private]

The offset instance variable is used to remember the argument to this opcode.

Definition at line 96 of file ldl.h.

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

• /home/archives/ucsd-psystem-xc/branch.0/branch.0/delta27403.167/ucsdpsys_compile/expression/ldl.h

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