Refactoring idioms into objects with match/action methods

include/epilogue_idioms.h

@@ -0,0 +1,39 @@
+#pragma once
+#include "idiom.h"
+#include "icode.h"
+#include <deque>
+struct EpilogIdiom : public Idiom
+{
+protected:
+    std::deque<iICODE> m_icodes; // deque to push_front optional icodes from popStkVars
+    void popStkVars (iICODE pIcode);
+public:
+    virtual ~EpilogIdiom() {}
+    EpilogIdiom(Function *f) : Idiom(f)
+    {
+    }
+
+};
+struct Idiom2 : public EpilogIdiom
+{
+    virtual ~Idiom2() {}
+    Idiom2(Function *f) : EpilogIdiom(f)
+    {
+    }
+    uint8_t minimum_match_length() {return 3;}
+    bool match(iICODE pIcode);
+    int action();
+};
+struct Idiom4 : public EpilogIdiom
+{
+protected:
+    int m_param_count;
+public:
+    virtual ~Idiom4() {}
+    Idiom4(Function *f) : EpilogIdiom(f)
+    {
+    }
+    uint8_t minimum_match_length() {return 1;}
+    bool match(iICODE pIcode);
+    int action();
+};

include/idiom.h

@@ -0,0 +1,15 @@
+#pragma once
+#include "icode.h"
+#include "Procedure.h"
+struct Idiom
+{
+protected:
+    Function *m_func;
+    iICODE m_end;
+public:
+    Idiom(Function *f) : m_func(f),m_end(f->Icode.end())
+    {
+    }
+    virtual uint8_t minimum_match_length()=0;
+    virtual bool match(iICODE at)=0;
+};

include/idiom1.h

@@ -0,0 +1,16 @@
+#pragma once
+#include "idiom.h"
+struct Idiom1 : public Idiom
+{
+protected:
+    std::vector<iICODE> m_icodes;
+    int m_min_off;
+    Int checkStkVars (iICODE pIcode);
+public:
+    Idiom1(Function *f) : Idiom(f)
+    {
+    }
+    uint8_t minimum_match_length() {return 1;}
+    bool match(iICODE picode);
+    int action();
+};