From f27b1d373ad33027f337bf96f2b8b8c3ac05917d Mon Sep 17 00:00:00 2001
From: waitti <waitti@foxmail.com>
Date: Sat, 19 Jun 2021 18:53:19 +0800
Subject: [PATCH] fix: add delete but no use
---
src/lib/stl/list.h | 4 +++-
src/lib/stl/string.cpp | 26 ++++++++++++++++++++++++++
src/lib/stl/string.h | 6 ++++++
3 files changed, 35 insertions(+), 1 deletion(-)
diff --git a/src/lib/stl/list.h b/src/lib/stl/list.h
index 61e18b3..d589849 100644
--- a/src/lib/stl/list.h
+++ b/src/lib/stl/list.h
@@ -118,7 +118,9 @@ struct List{
List<T>& operator=(const List<T>& list){
// TODO:free
- // pass
+ while (start!= nullptr){
+ pop_front();
+ }
// copy
start=end=nullptr;
diff --git a/src/lib/stl/string.cpp b/src/lib/stl/string.cpp
index 6e13246..eb4becb 100644
--- a/src/lib/stl/string.cpp
+++ b/src/lib/stl/string.cpp
@@ -7,6 +7,17 @@ String::String(const char* str){
memcpy(data,str,_length+1);
}
+String& String::operator=(const String& str){
+ delete[] data;
+
+ _length= str._length;
+ _capacity=_length+1;
+ data=new char[_capacity];
+ memcpy(data,str.data,_length+1);
+
+ return *this;
+}
+
String& String::operator=(const char* str){
delete[] data;
@@ -35,6 +46,17 @@ String::String(const String& b){
memcpy(data,b.data,_capacity);
}
+String::String(String&& b){
+ _capacity=b._capacity;
+ _length=b._length;
+ data=b.data;
+ // init b to empty
+ b._capacity=__INIT_CAPACITY;
+ b._length=0;
+ b.data=new char [b._capacity];
+ memset(b.data,0,__INIT_CAPACITY);
+}
+
char* String::c_str()const{
return data;
}
@@ -142,4 +164,8 @@ ostream& operator <<(ostream& os,unsigned long long n){
return os;
}
+String::~String() {
+ delete data;
+}
+
ostream cout;
diff --git a/src/lib/stl/string.h b/src/lib/stl/string.h
index 6690e6c..13e4c16 100644
--- a/src/lib/stl/string.h
+++ b/src/lib/stl/string.h
@@ -12,14 +12,20 @@ public:
String(const char* str);
+ String& operator=(const String& str);
+
String& operator=(const char* str);
String();
+ ~String();
+
String(int length);
String(const String& b);
+ String(String&& b);
+
char* c_str()const;
int length()const;
--
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