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#ifndef SLANG_COMPILER_CORE_SOURCE_MAP_H
#define SLANG_COMPILER_CORE_SOURCE_MAP_H
#include "../../slang.h"
#include "../core/slang-string.h"
#include "../core/slang-list.h"
#include "../core/slang-string-slice-pool.h"
namespace Slang {
class SourceMap : public RefObject
{
public:
struct Entry
{
void init()
{
generatedColumn = 0;
sourceFileIndex = 0;
sourceLine = 0;
sourceColumn = 0;
nameIndex = 0;
}
// Note! All column/line are zero indexed
Index generatedColumn; ///< The generated column
Index sourceFileIndex; ///< The index into the source name/contents
Index sourceLine; ///< The line number in the originating source
Index sourceColumn; ///< The column number in the originating source
Index nameIndex; ///< Name index
};
/// Get the total number of generated lines
Count getGeneratedLineCount() const { return m_lineStarts.getCount(); }
/// Get the entries on the line
SLANG_FORCE_INLINE ConstArrayView<Entry> getEntriesForLine(Index generatedLine) const;
/// Advance to the specified line index.
/// It is an error to specify a line *before* the current line. It should either be the current
/// output line or a later output line. Interveining lines will be set as empty
void advanceToLine(Index lineIndex);
/// Add an entry to the current line
void addEntry(const Entry& entry) { m_lineEntries.add(entry); }
/// Given the slice returns the index
Index getSourceFileIndex(const UnownedStringSlice& slice);
/// Get the name index
Index getNameIndex(const UnownedStringSlice& slice);
/// Given a row and col index, find the closest entry
/// NOTE! Zero indexed line and column.
Index findEntry(Index lineIndex, Index colIndex) const;
/// Given an entry index return the entry
const Entry& getEntryByIndex(Index i) const {return m_lineEntries[i]; }
/// Given the sourceFileIndex return the name
UnownedStringSlice getSourceFileName(Index sourceFileIndex) const;
/// Clear the contents of the source map
void clear();
/// Ctor
SourceMap():
m_slicePool(StringSlicePool::Style::Default)
{
clear();
}
String m_file;
String m_sourceRoot;
List<StringSlicePool::Handle> m_sources;
/// Storage for the contents. Can be unset null to indicate not set.
List<StringSlicePool::Handle> m_sourcesContent;
/// The names
List<StringSlicePool::Handle> m_names;
List<Index> m_lineStarts;
List<Entry> m_lineEntries;
StringSlicePool m_slicePool;
};
// -------------------------------------------------------------
SLANG_FORCE_INLINE ConstArrayView<SourceMap::Entry> SourceMap::getEntriesForLine(Index generatedLine) const
{
SLANG_ASSERT(generatedLine >= 0 && generatedLine < m_lineStarts.getCount());
const Index start = m_lineStarts[generatedLine];
const Index end = (generatedLine + 1 >= m_lineStarts.getCount()) ? m_lineEntries.getCount() : m_lineStarts[generatedLine + 1];
const auto entries = m_lineEntries.begin();
SLANG_ASSERT(start >= 0 && start <= m_lineEntries.getCount());
SLANG_ASSERT(end >= start && end >= 0 && end <= m_lineEntries.getCount());
return ConstArrayView<SourceMap::Entry>(entries + start, end - start);
}
} // namespace Slang
#endif // SLANG_COMPILER_CORE_SOURCE_MAP_H
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