7beea3ab73
Summary: Some of the existing structs had primimtive fields that were not explicitly initialized on construction. After this commit every struct consistently sets a defined value for every field when default-initialized. Reviewers: hokein, ioeric, sammccall Reviewed By: sammccall Subscribers: klimek, cfe-commits, jkorous-apple Differential Revision: https://reviews.llvm.org/D43230 llvm-svn: 325113
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
//===--- SourceCode.h - Manipulating source code as strings -----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "SourceCode.h"
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namespace clang {
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namespace clangd {
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using namespace llvm;
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size_t positionToOffset(StringRef Code, Position P) {
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if (P.line < 0)
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return 0;
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size_t StartOfLine = 0;
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for (int I = 0; I != P.line; ++I) {
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size_t NextNL = Code.find('\n', StartOfLine);
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if (NextNL == StringRef::npos)
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return Code.size();
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StartOfLine = NextNL + 1;
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}
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// FIXME: officially P.character counts UTF-16 code units, not UTF-8 bytes!
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return std::min(Code.size(), StartOfLine + std::max(0, P.character));
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}
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Position offsetToPosition(StringRef Code, size_t Offset) {
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Offset = std::min(Code.size(), Offset);
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StringRef Before = Code.substr(0, Offset);
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int Lines = Before.count('\n');
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size_t PrevNL = Before.rfind('\n');
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size_t StartOfLine = (PrevNL == StringRef::npos) ? 0 : (PrevNL + 1);
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// FIXME: officially character counts UTF-16 code units, not UTF-8 bytes!
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Position Pos;
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Pos.line = Lines;
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Pos.character = static_cast<int>(Offset - StartOfLine);
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return Pos;
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}
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} // namespace clangd
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} // namespace clang
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