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/*
* phc -- the open source PHP compiler
* See doc/license/README.license for licensing information
*
* Common ancestor for the IRs
*/
#ifndef PHC_IR_H
#define PHC_IR_H
#include "lib/Object.h"
#include "lib/AttrMap.h"
#include "lib/Integer.h"
#include "lib/String.h"
#include <string>
namespace AST
{
class PHP_script;
class Visitor;
class Transform;
}
namespace HIR
{
class PHP_script;
class Visitor;
class Transform;
}
namespace MIR
{
class PHP_script;
class Visitor;
class Transform;
}
class Unparser_state;
namespace IR
{
class Node : virtual public Object
{
public:
AttrMap* attrs;
Node();
// Return the line number of the node (or 0 if unknown)
int get_line_number();
int get_column_number();
// Return the filename of the node. If unknown, use "<unknown>",
// which is what the interpreter uses.
// TODO In the future, make sure we always have filenames and
// line numbers.
String* get_filename();
virtual Node* clone () = 0;
// If the location isnt already there, copy it from another node.
void copy_location (Node* source);
// Node features.
bool equals (IR::Node*);
virtual ~Node() {}
};
/*
* Maketea doesn't provide const versions, so this will have to do.
*/
class FOREIGN : virtual public Object
{
public:
virtual void unparse (Unparser_state* ups);
// We cant have the value here, because the token sets it.
virtual IR::Node* get_value () = 0;
virtual ~FOREIGN() {}
};
class PHP_script : virtual public Object
{
// Operations that are defined over all IRs
public:
virtual void assert_valid();
// Visit
public:
virtual void visit(AST::Visitor* ast_visitor);
virtual void visit(HIR::Visitor* hir_visitor);
virtual void visit(MIR::Visitor* mir_visitor);
virtual void visit(AST::Visitor* ast_visitor,
HIR::Visitor* hir_visitor,
MIR::Visitor* mir_visitor);
// Transform
public:
virtual void transform_children(AST::Transform* ast_transform);
virtual void transform_children(HIR::Transform* hir_transform);
virtual void transform_children(MIR::Transform* mir_transform);
virtual void transform_children(AST::Transform* ast_transform,
HIR::Transform* hir_transform,
MIR::Transform* mir_transform);
// Conversion
public:
virtual bool is_AST();
virtual bool is_HIR();
virtual bool is_MIR();
virtual AST::PHP_script* as_AST();
virtual HIR::PHP_script* as_HIR();
virtual MIR::PHP_script* as_MIR();
virtual PHP_script* fold_lower ();
// Make sure IR is virtual
public:
virtual ~PHP_script() {}
};
typedef List<Node*> Node_list;
}
#endif // PHC_IR_H
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