X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/c7f552fd8888da2f0d8cfb228fe0f28d3df3a12c..b4b6f2ea75b9f0f3ca918f5b84016610bf7a4d4f:/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/occurences.hh

diff --git a/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/occurences.hh b/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/occurences.hh
new file mode 100644
index 0000000..8276311
--- /dev/null
+++ b/interpretor/preprocessor/faust-0.9.47mr3/compiler/headers/occurences.hh
@@ -0,0 +1,48 @@
+#ifndef __OCCURENCES__
+#define __OCCURENCES__
+
+#include "tlib.hh"
+
+
+class Occurences
+{
+	const int 	fXVariability;		///< Extended Variability of the expression
+	int			fOccurences[4];		///< Occurences count according to Contexts
+	bool		fMultiOcc;			///< True when exp has multiple occ. or occ. in higher ctxt
+	bool		fOutDelayOcc;		///< True when exp has at least one occ. outside a delay
+    int			fMinDelay;			///< Minimal fix delay usage
+    int			fMaxDelay;			///< Maximal fix delay usage
+
+ public:
+ 	Occurences(int v, int r);
+
+	Occurences* incOccurences(int v, int r, int d);	///< inc occurences in context v,r,d
+	
+	bool 		hasMultiOccurences() const;			///< true if multiple occurences or occ. in higher ctxt
+	bool 		hasOutDelayOccurences() const;		///< true if has occurences outside a a delay
+    int			getMaxDelay() const;				///< return the maximal delay collected
+    int			getMinDelay() const;				///< return the minimal delay collected
+};
+
+
+/**
+ * Occurences Markup of a root tree. First create an OccMarkup om,
+ * second om.mark(root) then om.retrieve(subtree)
+ */
+class OccMarkup
+{
+	Tree 		fRootTree;								///< occurences computed within this tree
+	Tree		fPropKey;								///< key used to store occurences property
+
+	void 		incOcc (Tree env, int v, int r, int d, Tree t);	///< inc the occurence of t in context v,r
+	Occurences* getOcc (Tree t);						///< get Occurences property of t or null
+	void 		setOcc (Tree t, Occurences* occ);		///< set Occurences property of t
+
+ public:
+ 	void 		mark(Tree root);						///< start markup of root tree with new unique key
+	Occurences* retrieve(Tree t);						///< occurences of subtree t within root tree
+};
+
+
+
+#endif