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-rw-r--r--project2/basics/aggregates/min.cpp32
1 files changed, 32 insertions, 0 deletions
diff --git a/project2/basics/aggregates/min.cpp b/project2/basics/aggregates/min.cpp
new file mode 100644
index 0000000..ee0bf3d
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+++ b/project2/basics/aggregates/min.cpp
@@ -0,0 +1,32 @@
+#include <aggregate.h>
+
+class Min : public ValueAggregate {
+ public:
+ Min(ScriptNodePtr s) :
+ ValueAggregate(s),
+ first(true)
+ {
+ }
+ void reset() const
+ {
+ result = VariableType();
+ first = true;
+ }
+ void pushValue(const VariableType & v) const
+ {
+ if (first || v < result) {
+ result = v;
+ }
+ first = false;
+ }
+ VariableType resultValue() const
+ {
+ return result;
+ }
+ private:
+ mutable VariableType result;
+ mutable bool first;
+};
+
+DECLARE_LOADER("min", Min);
+