work on the core filter.c filter.h

[lttv.git] / ltt / branches / poly / lttv / lttv / filter.h

diff --git a/ltt/branches/poly/lttv/lttv/filter.h b/ltt/branches/poly/lttv/lttv/filter.h
index c6a53e58cef9472a7937f5e2e86f6bb585bf4708..2135f5f3b10a72223c20933bee7e9b246af38c2f 100644 (file)
--- a/ltt/branches/poly/lttv/lttv/filter.h
+++ b/ltt/branches/poly/lttv/lttv/filter.h
@@ -45,11 +45,61 @@
 
 */
 
+/**
+ *     @enum lttv_expression_op
+ */
+typedef enum _lttv_expression_op
+{ 
+  LTTV_FIELD_EQ,       /** equal */
+  LTTV_FIELD_NE,       /** not equal */
+  LTTV_FIELD_LT,       /** lower than */
+  LTTV_FIELD_LE,       /** lower or equal */
+  LTTV_FIELD_GT,       /** greater than */
+  LTTV_FIELD_GE                /** greater or equal */
+} lttv_expression_op;
+
+typedef enum _lttv_expression_type
+{ 
+  LTTV_EXPRESSION,
+  LTTV_SIMPLE_EXPRESSION
+} lttv_expression_type;
+
+typedef struct _lttv_simple_expression
+{ 
+  lttv_expression_op op;
+  char *field_name;
+  char *value;
+} lttv_simple_expression;
+
+typedef struct _lttv_expression 
+{ 
+  gboolean or;
+  gboolean not;
+  gboolean and;
+  gboolean xor;
+  gboolean simple_expression;
+//  union e 
+//  { 
+//     struct lttv_expression *e;
+//     lttv_field_relation *se;
+//  };
+} lttv_expression;
+
+typedef struct _lttv_filter_tree {
+       lttv_expression* node;
+       struct lttv_filter_tree* r_child;
+       struct lttv_filter_tree* l_child;
+} lttv_filter_tree;
+
 /**
  * @struct lttv_filter
  * ( will later contain a binary tree of filtering options )
  */
-typedef struct _lttv_filter lttv_filter;
+typedef struct _lttv_filter {
+       lttv_filter_tree* tree; 
+} lttv_filter;
+
+gboolean parse_simple_expression(GString* expression);
 
 /* Compile the filter expression into an efficient data structure */