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AK: Add begin() and end() to String and StringView

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Now it's possible to use range-based for loops with String and StringView.
This commit is contained in:
howar6hill 2020-03-10 16:13:29 +08:00 committed by Andreas Kling
parent a0e18f4450
commit e07f50c398
Notes: sideshowbarker 2024-07-19 17:36:49 +09:00 
Author: https://github.com/f-eiwu
Commit: https://github.com/SerenityOS/serenity/commit/e07f50c3986
Pull-request: https://github.com/SerenityOS/serenity/pull/1401
Reviewed-by: https://github.com/awesomekling
3 changed files with 15 additions and 6 deletions
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10
AK/String.h
View file

@ -57,6 +57,8 @@ namespace AK {
class String { class String {
public: public:
using ConstIterator = const char*;
~String() {} ~String() {}
String() {} String() {}
@ -144,12 +146,14 @@ public:
bool is_empty() const { return length() == 0; } bool is_empty() const { return length() == 0; }
size_t length() const { return m_impl ? m_impl->length() : 0; } size_t length() const { return m_impl ? m_impl->length() : 0; }
const char* characters() const { return m_impl ? m_impl->characters() : nullptr; } const char* characters() const { return m_impl ? m_impl->characters() : nullptr; }
char operator[](size_t i) const const char& operator[](size_t i) const
{ {
ASSERT(m_impl);
return (*m_impl)[i]; return (*m_impl)[i];
} }
ConstIterator begin() const { return characters(); }
ConstIterator end() const { return begin() + length(); }
bool starts_with(const StringView&) const; bool starts_with(const StringView&) const;
bool ends_with(const StringView&) const; bool ends_with(const StringView&) const;
bool starts_with(char) const; bool starts_with(char) const;
@ -302,5 +306,5 @@ String escape_html_entities(const StringView& html);
} }
using AK::CaseInsensitiveStringTraits; using AK::CaseInsensitiveStringTraits;
using AK::String;
using AK::escape_html_entities; using AK::escape_html_entities;
using AK::String;

4
AK/StringImpl.h
View file

@ -26,8 +26,8 @@
#pragma once #pragma once
#include <AK/RefPtr.h>
#include <AK/RefCounted.h> #include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/Types.h> #include <AK/Types.h>
#include <AK/kmalloc.h> #include <AK/kmalloc.h>
@ -57,7 +57,7 @@ public:
size_t length() const { return m_length; } size_t length() const { return m_length; }
const char* characters() const { return &m_inline_buffer[0]; } const char* characters() const { return &m_inline_buffer[0]; }
char operator[](size_t i) const const char& operator[](size_t i) const
{ {
ASSERT(i < m_length); ASSERT(i < m_length);
return characters()[i]; return characters()[i];

7
AK/StringView.h
View file

@ -34,6 +34,8 @@ namespace AK {
class StringView { class StringView {
public: public:
using ConstIterator = const char*;
StringView() {} StringView() {}
StringView(const char* characters, size_t length) StringView(const char* characters, size_t length)
: m_characters(characters) : m_characters(characters)
@ -58,7 +60,10 @@ public:
bool is_empty() const { return m_length == 0; } bool is_empty() const { return m_length == 0; }
const char* characters_without_null_termination() const { return m_characters; } const char* characters_without_null_termination() const { return m_characters; }
size_t length() const { return m_length; } size_t length() const { return m_length; }
char operator[](size_t index) const { return m_characters[index]; } const char& operator[](size_t index) const { return m_characters[index]; }
ConstIterator begin() const { return characters_without_null_termination(); }
ConstIterator end() const { return begin() + length(); }
unsigned hash() const; unsigned hash() const;