expression_lod Class Reference

#include <lod.h>

Inheritance diagram for expression_lod:

List of all members.

Public Member Functions
virtual	~expression_lod ()
	expression_lod (const location &locn, const type::pointer &type, unsigned down, 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_lod ()
	expression_lod (const expression_lod &)
expression_lod &	operator= (const expression_lod &)
Private Attributes
translator_compile &	code
type::pointer	type
unsigned	down
unsigned	offset

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Detailed Description

The expression_lod class is used to represent an LOD (load intermediate word) opcode.

Definition at line 32 of file lod.h.

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Constructor & Destructor Documentation

virtual expression_lod::~expression_lod

(

)

[virtual]

The destructor.

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

The constructor.

Parameters:

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

expression_lod::expression_lod

(

)

[private]

The default constructor. Do not use.

expression_lod::expression_lod

(

const expression_lod &

)

[private]

The copy constructor. Do not use.

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Member Function Documentation

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

int expression_lod::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_lod::get_type

(

)

const [protected, virtual]

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

Implements expression.

bool expression_lod::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_lod::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_lod& expression_lod::operator=

(

const expression_lod &

)

[private]

The assignment operator. Do not use.

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Member Data Documentation

translator_compile& expression_lod::code [private]

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

Definition at line 86 of file lod.h.

type::pointer expression_lod::type [private]

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

Definition at line 92 of file lod.h.

unsigned expression_lod::down [private]

The down instance variable is used to remember how far down the static chain the stack frame of interest lies.

Definition at line 98 of file lod.h.

unsigned expression_lod::offset [private]

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

Definition at line 104 of file lod.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/lod.h

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