clang 19.0.0git
Public Types | Public Member Functions | Friends | List of all members
clang::RewriteBuffer Class Reference

RewriteBuffer - As code is rewritten, SourceBuffer's from the original input with modifications get a new RewriteBuffer associated with them. More...

#include "clang/Rewrite/Core/RewriteBuffer.h"

Public Types

using iterator = RewriteRope::const_iterator
 

Public Member Functions

iterator begin () const
 
iterator end () const
 
unsigned size () const
 
void Initialize (const char *BufStart, const char *BufEnd)
 Initialize - Start this rewrite buffer out with a copy of the unmodified input buffer.
 
void Initialize (StringRef Input)
 
raw_ostream & write (raw_ostream &Stream) const
 Write to Stream the result of applying all changes to the original buffer.
 
void RemoveText (unsigned OrigOffset, unsigned Size, bool removeLineIfEmpty=false)
 RemoveText - Remove the specified text.
 
void InsertText (unsigned OrigOffset, StringRef Str, bool InsertAfter=true)
 InsertText - Insert some text at the specified point, where the offset in the buffer is specified relative to the original SourceBuffer.
 
void InsertTextBefore (unsigned OrigOffset, StringRef Str)
 InsertTextBefore - Insert some text before the specified point, where the offset in the buffer is specified relative to the original SourceBuffer.
 
void InsertTextAfter (unsigned OrigOffset, StringRef Str)
 InsertTextAfter - Insert some text at the specified point, where the offset in the buffer is specified relative to the original SourceBuffer.
 
void ReplaceText (unsigned OrigOffset, unsigned OrigLength, StringRef NewStr)
 ReplaceText - This method replaces a range of characters in the input buffer with a new string.
 

Friends

class Rewriter
 

Detailed Description

RewriteBuffer - As code is rewritten, SourceBuffer's from the original input with modifications get a new RewriteBuffer associated with them.

The RewriteBuffer captures the modified text itself as well as information used to map between SourceLocation's in the original input and offsets in the RewriteBuffer. For example, if text is inserted into the buffer, any locations after the insertion point have to be mapped.

Definition at line 25 of file RewriteBuffer.h.

Member Typedef Documentation

◆ iterator

Definition at line 35 of file RewriteBuffer.h.

Member Function Documentation

◆ begin()

iterator clang::RewriteBuffer::begin ( ) const
inline

Definition at line 37 of file RewriteBuffer.h.

References clang::RewriteRope::begin().

Referenced by clang::Rewriter::getRewrittenText(), RemoveText(), and write().

◆ end()

iterator clang::RewriteBuffer::end ( ) const
inline

Definition at line 38 of file RewriteBuffer.h.

References clang::RewriteRope::end().

Referenced by clang::Rewriter::getRewriteBufferFor(), RemoveText(), and write().

◆ Initialize() [1/2]

void clang::RewriteBuffer::Initialize ( const char *  BufStart,
const char *  BufEnd 
)
inline

Initialize - Start this rewrite buffer out with a copy of the unmodified input buffer.

Definition at line 43 of file RewriteBuffer.h.

References clang::RewriteRope::assign().

Referenced by Initialize().

◆ Initialize() [2/2]

void clang::RewriteBuffer::Initialize ( StringRef  Input)
inline

Definition at line 46 of file RewriteBuffer.h.

References Initialize().

◆ InsertText()

void RewriteBuffer::InsertText ( unsigned  OrigOffset,
StringRef  Str,
bool  InsertAfter = true 
)

InsertText - Insert some text at the specified point, where the offset in the buffer is specified relative to the original SourceBuffer.

The text is inserted after the specified location.

Definition at line 111 of file Rewriter.cpp.

References clang::RewriteRope::insert().

Referenced by clang::Rewriter::IncreaseIndentation(), clang::Rewriter::InsertText(), InsertTextAfter(), clang::Rewriter::InsertTextAfterToken(), and InsertTextBefore().

◆ InsertTextAfter()

void clang::RewriteBuffer::InsertTextAfter ( unsigned  OrigOffset,
StringRef  Str 
)
inline

InsertTextAfter - Insert some text at the specified point, where the offset in the buffer is specified relative to the original SourceBuffer.

The text is inserted after the specified location.

Definition at line 81 of file RewriteBuffer.h.

References InsertText().

Referenced by clang::html::AddLineNumbers(), clang::html::HighlightRange(), and clang::RewriteMacrosInInput().

◆ InsertTextBefore()

void clang::RewriteBuffer::InsertTextBefore ( unsigned  OrigOffset,
StringRef  Str 
)
inline

InsertTextBefore - Insert some text before the specified point, where the offset in the buffer is specified relative to the original SourceBuffer.

The text is inserted before the specified location. This is method is the same as InsertText with "InsertAfter == false".

Definition at line 74 of file RewriteBuffer.h.

References InsertText().

Referenced by AddLineNumber(), clang::html::AddLineNumbers(), clang::html::HighlightRange(), and clang::RewriteMacrosInInput().

◆ RemoveText()

void RewriteBuffer::RemoveText ( unsigned  OrigOffset,
unsigned  Size,
bool  removeLineIfEmpty = false 
)

RemoveText - Remove the specified text.

Definition at line 57 of file Rewriter.cpp.

References begin(), end(), clang::RewriteRope::erase(), isWhitespaceExceptNL(), and clang::RewriteRope::size().

Referenced by clang::Rewriter::RemoveText().

◆ ReplaceText()

void RewriteBuffer::ReplaceText ( unsigned  OrigOffset,
unsigned  OrigLength,
StringRef  NewStr 
)

ReplaceText - This method replaces a range of characters in the input buffer with a new string.

This is effectively a combined "remove/insert" operation.

This is effectively a combined "remove+insert" operation.

Definition at line 126 of file Rewriter.cpp.

References clang::RewriteRope::erase(), and clang::RewriteRope::insert().

Referenced by clang::html::EscapeText(), and clang::Rewriter::ReplaceText().

◆ size()

unsigned clang::RewriteBuffer::size ( ) const
inline

Definition at line 39 of file RewriteBuffer.h.

References clang::RewriteRope::size().

◆ write()

raw_ostream & RewriteBuffer::write ( raw_ostream &  Stream) const

Write to Stream the result of applying all changes to the original buffer.

Note that it isn't safe to use this function to overwrite memory mapped files in-place (PR17960). Consider using a higher-level utility such as Rewriter::overwriteChangedFiles() instead.

The original buffer is not actually changed.

Definition at line 33 of file Rewriter.cpp.

References begin(), end(), and clang::RopePieceBTreeIterator::MoveToNextPiece().

Referenced by applyEditsToTemp(), clang::arcmt::MigrationProcess::applyTransform(), clang::FixItRewriter::WriteFixedFile(), and clang::FixItRewriter::WriteFixedFiles().

Friends And Related Function Documentation

◆ Rewriter

friend class Rewriter
friend

Definition at line 26 of file RewriteBuffer.h.


The documentation for this class was generated from the following files: