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Translate_visitor Class Reference

#include <translator_i.h>

Inheritance diagram for Translate_visitor:

[legend]Collaboration diagram for Translate_visitor:

Public Methods
	Translate_visitor (Source *s)
virtual	~Translate_visitor ()
Private Types
typedef Ptree_program_visitor< bool >	Super
typedef hash_map< string, vrec >	Var_map
enum	Func_what { Prologue, Epilogue }
Private Methods
bool	visit_function (Ptree storagespec, Ptree returntype, PtreeDeclarator decl, PtreeBlock block)
bool	visit_name_declaration (Ptree storagespec, Ptree type, Ptree *decllist)
bool	visit_return (PtreeReturnStatement *exp)
bool	visit_exprstatement (PtreeExprStatement *exp)
bool	visit_assign (PtreeAssignExpr *exp)
bool	visit_infix (PtreeInfixExpr *exp)
bool	visit_postfix (PtreePostfixExpr *exp)
bool	visit_funcall (PtreeFuncallExpr *exp)
bool	visit_name (Ptree *exp)
	Variable expression. More...
bool	visit_leaf (Leaf *exp)
void	new_value (const string &val)
void	new_variable (const string &name, const string &initializer)
void	new_function_prologue (const string &name, const string &rettype)
void	new_function_epilogue (const string &name, const string &value)
void	new_state (const string &func)
void	push_lvalue ()
void	pop_lvalue ()
Private Attributes
Var_map	_var
	Variable array, indexed by encoded name. More...
Mangle	_sym
	Symbol table. More...
int	_value
	Current value index. More...
int	_number
	Next variable index. More...
string	_func
	Currently defined function. More...
string	_alloc
	Name of current allocator. More...
string	_last_alloc
	Name of current state's allocator. More...
bool	_expecting_lvalue
	Currently parsing an lvalue. More...
stack< bool >	_lvalue_stack
	Saved values of _expecting_lvalue. More...
ostringstream	_expr
	Where to save expression computation. More...
ostream *	out
	Current output stream. More...

Member Typedef Documentation

typedef Ptree_program_visitor<bool> Translate_visitor::Super [private]

Reimplemented from Ptree_program_visitor< bool >.
Definition at line 31 of file translator_i.h.

typedef hash_map<string,vrec> Translate_visitor::Var_map [private]

Definition at line 32 of file translator_i.h.

Member Enumeration Documentation

enum Translate_visitor::Func_what [private]

Enumeration values:

Prologue

Epilogue

Definition at line 34 of file translator_i.h.

Constructor & Destructor Documentation

Translate_visitor::Translate_visitor ( Source * s )

Definition at line 23 of file translator.cc.

Translate_visitor::~Translate_visitor ( ) [virtual]

Definition at line 39 of file translator.cc.

Member Function Documentation

void Translate_visitor::new_function_epilogue ( const string & name,

const string & value

) [private]

Definition at line 499 of file translator.cc.
References out.
Referenced by new_variable(), and visit_function().

void Translate_visitor::new_function_prologue ( const string & name,

const string & rettype

) [private]

Definition at line 482 of file translator.cc.
References out.
Referenced by new_variable(), and visit_function().

void Translate_visitor::new_state ( const string & func ) [private]

Definition at line 512 of file translator.cc.
References out.
Referenced by new_variable(), visit_funcall(), and visit_name().

void Translate_visitor::new_value ( const string & val ) [private]

Definition at line 413 of file translator.cc.
References _value, and out.
Referenced by visit_funcall(), visit_infix(), visit_leaf(), visit_name(), and visit_postfix().

void Translate_visitor::new_variable ( const string & name,

const string & initializer

) [private]

Definition at line 421 of file translator.cc.
References _last_alloc, _value, _var, new_function_epilogue(), new_function_prologue(), new_state(), and out.
Referenced by visit_name_declaration().

void Translate_visitor::pop_lvalue ( ) [private]

Definition at line 532 of file translator.cc.
References _expecting_lvalue, and _lvalue_stack.
Referenced by visit_infix(), and visit_postfix().

void Translate_visitor::push_lvalue ( ) [private]

Definition at line 523 of file translator.cc.
References _expecting_lvalue, and _lvalue_stack.
Referenced by visit_infix(), and visit_postfix().

bool Translate_visitor::visit_assign ( PtreeAssignExpr * exp ) [private, virtual]

Reimplemented from Ptree_visitor< bool >.
Definition at line 228 of file translator.cc.
References _expecting_lvalue, Ptree::First(), Ptree::Third(), Ptree::ToString(), and Ptree_visitor< bool >::visit().

bool Translate_visitor::visit_exprstatement ( PtreeExprStatement * exp ) [private, virtual]

Reimplemented from Ptree_visitor< bool >.
Definition at line 218 of file translator.cc.
References Ptree::First(), Ptree::Second(), Ptree::ToString(), and Ptree_visitor< bool >::visit().

bool Translate_visitor::visit_funcall ( PtreeFuncallExpr * exp ) [private, virtual]

Reimplemented from Ptree_visitor< bool >.
Definition at line 316 of file translator.cc.
References _sym, _var, Ptree::Car(), Mangle::lookup_global_name(), new_state(), new_value(), and out.

bool Translate_visitor::visit_function ( Ptree * storagespec,

Ptree * returntype,

PtreeDeclarator * decl,

PtreeBlock * block

) [private, virtual]

Reimplemented from Ptree_program_visitor< bool >.
Definition at line 50 of file translator.cc.
References _alloc, _func, _last_alloc, _number, _sym, _var, Ptree::Car(), Mangle::enter_scope(), Ptree::First(), Mangle::insert(), NonLeaf::IsLeaf(), Mangle::leave_scope(), new_function_epilogue(), new_function_prologue(), Ptree::Second(), Ptree::Third(), Ptree::ToString(), and Ptree_visitor< bool >::visit().

bool Translate_visitor::visit_infix ( PtreeInfixExpr * exp ) [private, virtual]

Reimplemented from Ptree_visitor< bool >.
Definition at line 249 of file translator.cc.
References _value, Ptree::First(), new_value(), pop_lvalue(), push_lvalue(), Ptree::Second(), Ptree::Third(), Ptree::ToString(), and Ptree_visitor< bool >::visit().

bool Translate_visitor::visit_leaf ( Leaf * exp ) [private, virtual]

Reimplemented from Ptree_visitor< bool >.
Definition at line 386 of file translator.cc.
References Leaf::IsLeaf(), new_value(), and Ptree::ToString().
Referenced by visit_name().

bool Translate_visitor::visit_name ( Ptree * exp ) [private, virtual]

Variable expression.
Semantics: If expecting an rvalue, read the typed value of the variable into a logic variable. If expecting an lvalue, write the previuosly computed rvalue to the variable.
Reimplemented from Ptree_visitor< bool >.
Definition at line 342 of file translator.cc.
References _expecting_lvalue, _last_alloc, _sym, _value, _var, vrec::alloc, Ptree::IsLeaf(), Mangle::lookup_global_name(), vrec::name, new_state(), new_value(), Ptree::ToString(), and visit_leaf().

bool Translate_visitor::visit_name_declaration ( Ptree * storagespec,

Ptree * type,

Ptree * decllist

) [private, virtual]

Reimplemented from Ptree_program_visitor< bool >.
Definition at line 111 of file translator.cc.
References _alloc, _expr, _number, _sym, _var, Ptree::Car(), Ptree::Cdr(), Ptree::First(), Mangle::insert(), Ptree::IsLeaf(), new_variable(), out, Ptree::ToString(), and Ptree_visitor< bool >::visit().

bool Translate_visitor::visit_postfix ( PtreePostfixExpr * exp ) [private, virtual]

Reimplemented from Ptree_visitor< bool >.
Definition at line 279 of file translator.cc.
References _expecting_lvalue, _value, Ptree::First(), new_value(), pop_lvalue(), push_lvalue(), Ptree::Second(), Ptree::ToString(), and Ptree_visitor< bool >::visit().

bool Translate_visitor::visit_return ( PtreeReturnStatement * exp ) [private, virtual]

Reimplemented from Ptree_visitor< bool >.
Definition at line 187 of file translator.cc.
References _func, _value, _var, Ptree::Length(), out, Ptree::Second(), and Ptree_visitor< bool >::visit().

Member Data Documentation

string Translate_visitor::_alloc [private]

Name of current allocator.

Definition at line 43 of file translator_i.h.
Referenced by visit_function(), and visit_name_declaration().

bool Translate_visitor::_expecting_lvalue [private]

Currently parsing an lvalue.

Definition at line 46 of file translator_i.h.
Referenced by pop_lvalue(), push_lvalue(), visit_assign(), visit_name(), and visit_postfix().

ostringstream Translate_visitor::_expr [private]

Where to save expression computation.

Definition at line 50 of file translator_i.h.
Referenced by visit_name_declaration().

string Translate_visitor::_func [private]

Currently defined function.

Definition at line 42 of file translator_i.h.
Referenced by visit_function(), and visit_return().

string Translate_visitor::_last_alloc [private]

Name of current state's allocator.

Definition at line 44 of file translator_i.h.
Referenced by new_variable(), visit_function(), and visit_name().

stack<bool> Translate_visitor::_lvalue_stack [private]

Saved values of _expecting_lvalue.

Definition at line 47 of file translator_i.h.
Referenced by pop_lvalue(), and push_lvalue().

int Translate_visitor::_number [private]

Next variable index.

Definition at line 40 of file translator_i.h.
Referenced by visit_function(), and visit_name_declaration().

Mangle Translate_visitor::_sym [private]

Symbol table.

Definition at line 37 of file translator_i.h.
Referenced by visit_funcall(), visit_function(), visit_name(), and visit_name_declaration().

int Translate_visitor::_value [private]

Current value index.

Definition at line 39 of file translator_i.h.
Referenced by new_value(), new_variable(), visit_infix(), visit_name(), visit_postfix(), and visit_return().

Var_map Translate_visitor::_var [private]

Variable array, indexed by encoded name.

Definition at line 36 of file translator_i.h.
Referenced by new_variable(), visit_funcall(), visit_function(), visit_name(), visit_name_declaration(), and visit_return().

ostream* Translate_visitor::out [private]

Current output stream.

Definition at line 52 of file translator_i.h.
Referenced by new_function_epilogue(), new_function_prologue(), new_state(), new_value(), new_variable(), visit_funcall(), visit_name_declaration(), and visit_return().

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

Generated on Mon Feb 10 17:36:47 2003 for VFiasco Semantics Compiler by

1.2.15

Translate_visitor Class Reference

Public Methods

Private Types

Private Methods

Private Attributes

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation