1 files changed, 71 insertions, 0 deletions
diff --git a/include/marisa/query.h b/include/marisa/query.h
new file mode 100644
index 0000000..316e741
--- /dev/null
+++ b/include/marisa/query.h
@@ -0,0 +1,71 @@
+#ifndef MARISA_QUERY_H_
+#define MARISA_QUERY_H_
+
+#include "marisa/base.h"
+
+namespace marisa {
+
+class Query {
+ public:
+  Query() : ptr_(NULL), length_(0), id_(0) {}
+  Query(const Query &query)
+      : ptr_(query.ptr_), length_(query.length_), id_(query.id_) {}
+
+  Query &operator=(const Query &query) {
+    ptr_ = query.ptr_;
+    length_ = query.length_;
+    id_ = query.id_;
+    return *this;
+  }
+
+  char operator[](std::size_t i) const {
+    MARISA_DEBUG_IF(i >= length_, MARISA_BOUND_ERROR);
+    return ptr_[i];
+  }
+
+  void set_str(const char *str) {
+    MARISA_DEBUG_IF(str == NULL, MARISA_NULL_ERROR);
+    std::size_t length = 0;
+    while (str[length] != '\0') {
+      ++length;
+    }
+    ptr_ = str;
+    length_ = length;
+  }
+  void set_str(const char *ptr, std::size_t length) {
+    MARISA_DEBUG_IF((ptr == NULL) && (length != 0), MARISA_NULL_ERROR);
+    ptr_ = ptr;
+    length_ = length;
+  }
+  void set_id(std::size_t id) {
+    id_ = id;
+  }
+
+  const char *ptr() const {
+    return ptr_;
+  }
+  std::size_t length() const {
+    return length_;
+  }
+  std::size_t id() const {
+    return id_;
+  }
+
+  void clear() {
+    Query().swap(*this);
+  }
+  void swap(Query &rhs) {
+    marisa::swap(ptr_, rhs.ptr_);
+    marisa::swap(length_, rhs.length_);
+    marisa::swap(id_, rhs.id_);
+  }
+
+ private:
+  const char *ptr_;
+  std::size_t length_;
+  std::size_t id_;
+};
+
+}  // namespace marisa
+
+#endif  // MARISA_QUERY_H_