clang  6.0.0svn
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clang::format::WhitespaceManager Class Reference

Manages the whitespaces around tokens and their replacements. More...

#include "/opt/doxygen-docs/src/llvm/tools/clang/lib/Format/WhitespaceManager.h"

Classes

struct  Change
 Represents a change before a token, a break inside a token, or the layout of an unchanged token (or whitespace within). More...
 

Public Member Functions

 WhitespaceManager (const SourceManager &SourceMgr, const FormatStyle &Style, bool UseCRLF)
 
void replaceWhitespace (FormatToken &Tok, unsigned Newlines, unsigned Spaces, unsigned StartOfTokenColumn, bool InPPDirective=false)
 Replaces the whitespace in front of Tok. More...
 
void addUntouchableToken (const FormatToken &Tok, bool InPPDirective)
 Adds information about an unchangeable token's whitespace. More...
 
llvm::Error addReplacement (const tooling::Replacement &Replacement)
 
void replaceWhitespaceInToken (const FormatToken &Tok, unsigned Offset, unsigned ReplaceChars, StringRef PreviousPostfix, StringRef CurrentPrefix, bool InPPDirective, unsigned Newlines, int Spaces)
 Inserts or replaces whitespace in the middle of a token. More...
 
const tooling::ReplacementsgenerateReplacements ()
 Returns all the Replacements created during formatting. More...
 

Detailed Description

Manages the whitespaces around tokens and their replacements.

This includes special handling for certain constructs, e.g. the alignment of trailing line comments.

To guarantee correctness of alignment operations, the WhitespaceManager must be informed about every token in the source file; for each token, there must be exactly one call to either replaceWhitespace or addUntouchableToken.

There may be multiple calls to breakToken for a given token.

Definition at line 38 of file WhitespaceManager.h.

Constructor & Destructor Documentation

◆ WhitespaceManager()

clang::format::WhitespaceManager::WhitespaceManager ( const SourceManager SourceMgr,
const FormatStyle Style,
bool  UseCRLF 
)
inline

Member Function Documentation

◆ addReplacement()

llvm::Error clang::format::WhitespaceManager::addReplacement ( const tooling::Replacement Replacement)

Definition at line 71 of file WhitespaceManager.cpp.

Referenced by WhitespaceManager().

◆ addUntouchableToken()

void clang::format::WhitespaceManager::addUntouchableToken ( const FormatToken Tok,
bool  InPPDirective 
)

Adds information about an unchangeable token's whitespace.

Needs to be called for every token for which replaceWhitespace was not called.

Definition at line 59 of file WhitespaceManager.cpp.

References clang::format::WhitespaceManager::Change::Change(), Changes, clang::format::Error, clang::format::FormatToken::Finalized, clang::format::FormatToken::IsFirst, clang::format::FormatToken::NewlinesBefore, clang::format::FormatToken::OriginalColumn, and clang::format::FormatToken::WhitespaceRange.

Referenced by WhitespaceManager().

◆ generateReplacements()

const tooling::Replacements & clang::format::WhitespaceManager::generateReplacements ( )

◆ replaceWhitespace()

void clang::format::WhitespaceManager::replaceWhitespace ( FormatToken Tok,
unsigned  Newlines,
unsigned  Spaces,
unsigned  StartOfTokenColumn,
bool  InPPDirective = false 
)

Replaces the whitespace in front of Tok.

Only call once for each AnnotatedToken.

StartOfTokenColumn is the column at which the token will start after this replacement. It is needed for determining how Spaces is turned into tabs and spaces for some format styles.

Definition at line 46 of file WhitespaceManager.cpp.

References clang::format::WhitespaceManager::Change::Change(), Changes, clang::format::FormatToken::Decision, clang::format::FD_Break, clang::format::FD_Continue, clang::format::FormatToken::Finalized, clang::format::FormatToken::IsFirst, and clang::format::FormatToken::WhitespaceRange.

Referenced by WhitespaceManager().

◆ replaceWhitespaceInToken()

void clang::format::WhitespaceManager::replaceWhitespaceInToken ( const FormatToken Tok,
unsigned  Offset,
unsigned  ReplaceChars,
StringRef  PreviousPostfix,
StringRef  CurrentPrefix,
bool  InPPDirective,
unsigned  Newlines,
int  Spaces 
)

Inserts or replaces whitespace in the middle of a token.

Inserts PreviousPostfix, Newlines, Spaces and CurrentPrefix (in this order) at Offset inside Tok, replacing ReplaceChars characters.

Note: Spaces can be negative to retain information about initial relative column offset between a line of a block comment and the start of the comment. This negative offset may be compensated by trailing comment alignment here. In all other cases negative Spaces will be truncated to 0.

When InPPDirective is true, escaped newlines are inserted. Spaces is used to align backslashes correctly.

Definition at line 75 of file WhitespaceManager.cpp.

References clang::format::WhitespaceManager::Change::Change(), Changes, clang::format::FormatToken::Finalized, clang::SourceLocation::getLocWithOffset(), clang::format::FormatToken::getStartOfNonWhitespace(), clang::format::FormatToken::IsFirst, and max().

Referenced by WhitespaceManager().


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