mirror of
https://github.com/apple/swift.git
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e5426ecfa5
This reverts commit 86d0fc37bc.
This was causing a performance regression.
Resolves rdar://problem/32434045
105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
//===--- Formatting.h -------------------------------------------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_FORMATTING_H
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#define SWIFT_FORMATTING_H
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namespace swift {
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namespace ide {
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struct CodeFormatOptions {
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public:
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bool UseTabs = false;
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bool IndentSwitchCase = false;
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unsigned IndentWidth = 4;
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unsigned TabWidth = 4;
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};
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/// \brief Returns the offset (in bytes) to the start of \p LineIndex
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size_t getOffsetOfLine(unsigned LineIndex, StringRef Text);
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/// \brief Returns the offset to the first Character. If \p Trim is true, the
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/// first character is Non-WhiteSpace.
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size_t getOffsetOfLine(unsigned LineIndex, StringRef Text, bool Trim);
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/// \brief Returns the Text on \p LineIndex, excluding Leading WS if \p Trim is
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/// true.
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StringRef getTextForLine(unsigned LineIndex, StringRef Text, bool Trim);
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/// \brief Returns the number of spaces at the beginning of \p LineIndex
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/// or if indenting is done by Tabs, the number of Tabs * TabWidthp
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size_t getExpandedIndentForLine(unsigned LineIndex, CodeFormatOptions Options,
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StringRef Text);
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class LineRange {
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unsigned StartLine;
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unsigned Length;
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public:
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LineRange()
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:StartLine(0), Length(0) { }
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LineRange(unsigned StartLine, unsigned Length)
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:StartLine(StartLine), Length(Length) { }
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LineRange(const LineRange &Other)
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:StartLine(Other.StartLine), Length(Other.Length) { }
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bool isValid() const {
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return Length != 0;
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}
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unsigned startLine() const {
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return StartLine;
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}
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unsigned endLine() const {
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return isValid() ? StartLine + Length - 1 : 0;
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}
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unsigned lineCount() const {
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return Length;
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}
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void setRange(unsigned NewStartLine, unsigned NewLength) {
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StartLine = NewStartLine;
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Length = NewLength;
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}
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void extendToIncludeLine(unsigned Line) {
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if (!isValid()) {
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StartLine = Line;
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Length = 1;
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}
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else if (Line >= StartLine + Length) {
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Length = Line - StartLine + 1;
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}
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}
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};
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//===----------------------------------------------------------------------===//
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// Reformat
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//===----------------------------------------------------------------------===//
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/// Request a reformatting of the \p Range, using \p Options to determine the
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/// how the format should be applied to \p SF. \p SM is required to provide
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/// an ASTContext and other helper data.
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/// \returns a pair containing which line ranges where updated and a string
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/// containing the applied edits.
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std::pair<LineRange, std::string> reformat(LineRange Range,
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CodeFormatOptions Options,
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SourceManager &SM,
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SourceFile &SF);
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} // namespace ide
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} // namespace swift
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#endif // LLVM_SWIFT_FORMATTING_H
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