1 files changed, 98 insertions, 0 deletions
diff --git a/src/object_filter.cc b/src/object_filter.cc
new file mode 100644
index 00000000..39961146
--- /dev/null
+++ b/src/object_filter.cc
@@ -0,0 +1,98 @@
+#include "object_filter.hpp"
+#include "object1.hpp"
+#include "object2.hpp"
+#include "object_type.hpp"
+
+namespace object_filter {
+
+object_filter_t TVal(byte tval) {
+	return [=](object_type const *o_ptr) -> bool {
+		return o_ptr->tval == tval;
+	};
+}
+
+object_filter_t SVal(byte sval) {
+	return [=](object_type const *o_ptr) -> bool {
+		return o_ptr->sval == sval;
+	};
+}
+
+object_filter_t HasFlag3(u32b mask) {
+	return [=](object_type const *o_ptr) -> bool {
+		// Extract the flags
+		u32b f1, f2, f3, f4, f5, esp;
+		object_flags(o_ptr, &f1, &f2, &f3, &f4, &f5, &esp);
+		// Does the item have the flag?
+		return (f3 & mask);
+	};
+}
+
+object_filter_t HasFlag4(u32b mask) {
+	return [=](object_type const *o_ptr) -> bool {
+		// Extract the flags
+		u32b f1, f2, f3, f4, f5, esp;
+		object_flags(o_ptr, &f1, &f2, &f3, &f4, &f5, &esp);
+		// Does the item have the flag?
+		return (f4 & mask);
+	};
+}
+
+object_filter_t HasFlag5(u32b mask) {
+	return [=](object_type const *o_ptr) -> bool {
+		// Extract the flags
+		u32b f1, f2, f3, f4, f5, esp;
+		object_flags(o_ptr, &f1, &f2, &f3, &f4, &f5, &esp);
+		// Does the item have the flag?
+		return (f5 & mask);
+	};
+}
+
+object_filter_t IsArtifact() {
+	return [](object_type const *o_ptr) -> bool {
+		return o_ptr->name1 > 0;
+	};
+}
+
+object_filter_t IsArtifactP() {
+	return [](object_type const *o_ptr) -> bool {
+		return artifact_p(o_ptr);
+	};
+}
+
+object_filter_t IsEgo() {
+	return [](object_type const *o_ptr) -> bool {
+		return ego_item_p(o_ptr);
+	};
+}
+
+object_filter_t IsKnown() {
+	return [](object_type const *o_ptr) -> bool {
+		return object_known_p(o_ptr);
+	};
+}
+
+object_filter_t True() {
+	return [](object_type const *o_ptr) -> bool {
+		return true;
+	};
+}
+
+object_filter_t Not(object_filter_t p) {
+	return [=](object_type const *o_ptr) -> bool {
+		return !p(o_ptr);
+	};
+}
+
+object_filter_t And() {
+	return [](object_type const *) -> bool {
+		return true;
+	};
+}
+
+object_filter_t Or() {
+	return [](object_type const *) -> bool {
+		return false;
+	};
+}
+
+}