aboutsummaryrefslogtreecommitdiff
path: root/contrib/llvm/lib/Support/LineIterator.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/lib/Support/LineIterator.cpp')
-rw-r--r--contrib/llvm/lib/Support/LineIterator.cpp93
1 files changed, 0 insertions, 93 deletions
diff --git a/contrib/llvm/lib/Support/LineIterator.cpp b/contrib/llvm/lib/Support/LineIterator.cpp
deleted file mode 100644
index 164436a2c48e..000000000000
--- a/contrib/llvm/lib/Support/LineIterator.cpp
+++ /dev/null
@@ -1,93 +0,0 @@
-//===- LineIterator.cpp - Implementation of line iteration ----------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Support/LineIterator.h"
-#include "llvm/Support/MemoryBuffer.h"
-
-using namespace llvm;
-
-static bool isAtLineEnd(const char *P) {
- if (*P == '\n')
- return true;
- if (*P == '\r' && *(P + 1) == '\n')
- return true;
- return false;
-}
-
-static bool skipIfAtLineEnd(const char *&P) {
- if (*P == '\n') {
- ++P;
- return true;
- }
- if (*P == '\r' && *(P + 1) == '\n') {
- P += 2;
- return true;
- }
- return false;
-}
-
-line_iterator::line_iterator(const MemoryBuffer &Buffer, bool SkipBlanks,
- char CommentMarker)
- : Buffer(Buffer.getBufferSize() ? &Buffer : nullptr),
- CommentMarker(CommentMarker), SkipBlanks(SkipBlanks), LineNumber(1),
- CurrentLine(Buffer.getBufferSize() ? Buffer.getBufferStart() : nullptr,
- 0) {
- // Ensure that if we are constructed on a non-empty memory buffer that it is
- // a null terminated buffer.
- if (Buffer.getBufferSize()) {
- assert(Buffer.getBufferEnd()[0] == '\0');
- // Make sure we don't skip a leading newline if we're keeping blanks
- if (SkipBlanks || !isAtLineEnd(Buffer.getBufferStart()))
- advance();
- }
-}
-
-void line_iterator::advance() {
- assert(Buffer && "Cannot advance past the end!");
-
- const char *Pos = CurrentLine.end();
- assert(Pos == Buffer->getBufferStart() || isAtLineEnd(Pos) || *Pos == '\0');
-
- if (skipIfAtLineEnd(Pos))
- ++LineNumber;
- if (!SkipBlanks && isAtLineEnd(Pos)) {
- // Nothing to do for a blank line.
- } else if (CommentMarker == '\0') {
- // If we're not stripping comments, this is simpler.
- while (skipIfAtLineEnd(Pos))
- ++LineNumber;
- } else {
- // Skip comments and count line numbers, which is a bit more complex.
- for (;;) {
- if (isAtLineEnd(Pos) && !SkipBlanks)
- break;
- if (*Pos == CommentMarker)
- do {
- ++Pos;
- } while (*Pos != '\0' && !isAtLineEnd(Pos));
- if (!skipIfAtLineEnd(Pos))
- break;
- ++LineNumber;
- }
- }
-
- if (*Pos == '\0') {
- // We've hit the end of the buffer, reset ourselves to the end state.
- Buffer = nullptr;
- CurrentLine = StringRef();
- return;
- }
-
- // Measure the line.
- size_t Length = 0;
- while (Pos[Length] != '\0' && !isAtLineEnd(&Pos[Length])) {
- ++Length;
- }
-
- CurrentLine = StringRef(Pos, Length);
-}