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Added function to dermine stream location from arbitrary positions.

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This commit is contained in:
Patrick Lühne
2017-06-24 18:58:28 +02:00
parent 4d59732263
commit 436933f73f
1 changed files with 12 additions and 7 deletions
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19
lib/tokenize/include/tokenize/Stream.h
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@@ -104,10 +104,10 @@ class Stream
return m_position;
}
Location location() const
Location location(StreamPosition position) const
{
// Find current section
auto section = std::upper_bound(m_sections.cbegin(), m_sections.cend(), m_position,
auto section = std::upper_bound(m_sections.cbegin(), m_sections.cend(), position,
[&](const auto &lhs, const auto &rhs)
{
return lhs < rhs.position;
@@ -118,20 +118,25 @@ class Stream
section--;
// Find line (row) in the file
auto line = std::lower_bound(section->newlines.cbegin(), section->newlines.cend(), m_position);
auto line = std::lower_bound(section->newlines.cbegin(), section->newlines.cend(), position);
if (line == section->newlines.cbegin())
{
const auto row = 1;
const auto column = static_cast<StreamPosition>(m_position - section->position + 1);
const auto column = static_cast<StreamPosition>(position - section->position + 1);
return {m_position, section->name, section->name, row, row, column, column};
return {position, section->name, section->name, row, row, column, column};
}
const auto row = static_cast<StreamPosition>(line - section->newlines.cbegin() + 1);
const auto column = static_cast<StreamPosition>(m_position - *(line - 1));
const auto column = static_cast<StreamPosition>(position - *(line - 1));
return {m_position, section->name, section->name, row, row, column, column};
return {position, section->name, section->name, row, row, column, column};
}
Location location() const
{
return location(m_position);
}
const std::vector<Section> &sections() const