Viewing file:  Lower_control_flow.h (1.5 KB) -rw-rw-r--
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/*
* phc -- the open source PHP compiler
* See doc/license/README.license for licensing information
*
* Lower any control flow statements into conditional
* gotos, and add necessary labels.
*/
#ifndef PHC_LOWER_CONTROL_FLOW_H
#define PHC_LOWER_CONTROL_FLOW_H
#include "HIR_lower_expr.h"
#include "MIR.h"
#include "HIR_to_MIR.h"
#include "lib/Vector.h"
class Lower_control_flow : public HIR::Lower_expr
{
private:
Vector<HIR::Node*> break_levels;
Vector<HIR::Node*> continue_levels;
HIR_to_MIR folder;
public:
MIR::VARIABLE_NAME* fold_var (HIR::VARIABLE_NAME* in);
template<class T> MIR::Label* get_label (HIR::Node* in);
template<class T> void add_label (HIR::Node*, HIR::Statement_list*);
template<class T> MIR::Label* exit_label (HIR::Node*);
template<class T> void lower_exit (T*, HIR::Statement_list*);
void lower_foreach (HIR::Foreach*, HIR::Statement_list*);
void lower_if (HIR::If*, HIR::Statement_list*);
void lower_loop (HIR::Loop* in, HIR::Statement_list* out);
public:
void pre_control_flow (HIR::Statement* in, HIR::Statement_list* out);
void pre_loop(HIR::Loop* in, HIR::Statement_list* out);
void pre_foreach(HIR::Foreach* in, HIR::Statement_list* out);
void post_loop(HIR::Loop* in, HIR::Statement_list* out);
void post_foreach(HIR::Foreach* in, HIR::Statement_list* out);
void post_if(HIR::If* in, HIR::Statement_list* out);
void post_break(HIR::Break* in, HIR::Statement_list* out);
void post_continue(HIR::Continue* in, HIR::Statement_list* out);
};
#endif // PHC_LOWER_CONTROL_FLOW_H
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