mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2026-06-24 18:30:23 +00:00
21cbfb3cb1
Store source map locations as bytecode offset, line, and column. Runtime consumers only emit the start line and column, so source end positions and source text offsets do not need to be carried through Executable source maps, bytecode cache serialization, or the Rust FFI. Keep SourceCode's internal position cache able to track source text offsets so callers can still translate source offsets to line and column pairs when needed. Hash dump-bytecode IDs from the name, first source position, and bytecode size instead of source slices that need end offsets. Bump the bytecode cache format version for the slimmer serialized source map entry shape.
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2022-2023, Andreas Kling <andreas@ladybird.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/String.h>
|
|
#include <AK/Utf16String.h>
|
|
#include <AK/Vector.h>
|
|
#include <LibJS/Export.h>
|
|
#include <LibJS/Forward.h>
|
|
#include <LibJS/Position.h>
|
|
|
|
namespace JS {
|
|
|
|
class JS_API SourceCode : public RefCounted<SourceCode> {
|
|
public:
|
|
static NonnullRefPtr<SourceCode const> create(String filename, Utf16String code);
|
|
|
|
String const& filename() const { return m_filename; }
|
|
Utf16String const& code() const { return m_code; }
|
|
Utf16View const& code_view() const { return m_code_view; }
|
|
size_t length_in_code_units() const { return m_length_in_code_units; }
|
|
|
|
u16 const* utf16_data() const;
|
|
|
|
SourceRange range_from_offsets(u32 start_offset, u32 end_offset) const;
|
|
|
|
private:
|
|
SourceCode(String filename, Utf16String code);
|
|
|
|
String m_filename;
|
|
Utf16String m_code;
|
|
Utf16View m_code_view;
|
|
size_t m_length_in_code_units { 0 };
|
|
|
|
// For fast mapping of offsets to line/column numbers, we build a list of
|
|
// starting points (with byte offsets into the source string) and which
|
|
// line:column they map to. This can then be binary-searched.
|
|
void fill_position_cache() const;
|
|
struct CachedPosition {
|
|
Position position;
|
|
u32 offset { 0 };
|
|
};
|
|
Vector<CachedPosition> mutable m_cached_positions;
|
|
|
|
// Cached UTF-16 widening of ASCII source data, lazily populated by
|
|
// utf16_data() for use by the Rust compilation pipeline.
|
|
Vector<u16> mutable m_utf16_data_cache;
|
|
};
|
|
|
|
}
|