43b13341fb
Based on https://reviews.llvm.org/D45375 . Introduce a new InputFile kind `InternalKind`, use it for * `ctx.internalFile`: for linker-defined symbols and some synthesized `Undefined` * `createInternalFile`: for symbol assignments and --defsym I picked "internal" instead of "synthetic" to avoid confusion with SyntheticSection. Currently a symbol's file is one of: nullptr, ObjKind, SharedKind, BitcodeKind, BinaryKind. Now it's non-null (I plan to add an `assert(file)` to Symbol::Symbol and change `toString(const InputFile *)` separately). Debugging and error reporting gets improved. The immediate user-facing difference is more descriptive "File" column in the --cref output. This patch may unlock further simplification. Currently each symbol assignment gets its own `createInternalFile(cmd->location)`. Two symbol assignments in a linker script do not share the same file. Making the file the same would be nice, but would require non trivial code.
55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
//===- ScriptLexer.h --------------------------------------------*- C++ -*-===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLD_ELF_SCRIPT_LEXER_H
|
|
#define LLD_ELF_SCRIPT_LEXER_H
|
|
|
|
#include "lld/Common/LLVM.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/MemoryBufferRef.h"
|
|
#include <vector>
|
|
|
|
namespace lld::elf {
|
|
|
|
class ScriptLexer {
|
|
public:
|
|
explicit ScriptLexer(MemoryBufferRef mb);
|
|
|
|
void setError(const Twine &msg);
|
|
void tokenize(MemoryBufferRef mb);
|
|
StringRef skipSpace(StringRef s);
|
|
bool atEOF();
|
|
StringRef next();
|
|
StringRef peek();
|
|
StringRef peek2();
|
|
void skip();
|
|
bool consume(StringRef tok);
|
|
void expect(StringRef expect);
|
|
bool consumeLabel(StringRef tok);
|
|
std::string getCurrentLocation();
|
|
MemoryBufferRef getCurrentMB();
|
|
|
|
std::vector<MemoryBufferRef> mbs;
|
|
std::vector<StringRef> tokens;
|
|
bool inExpr = false;
|
|
size_t pos = 0;
|
|
|
|
size_t lastLineNumber = 0;
|
|
size_t lastLineNumberOffset = 0;
|
|
|
|
private:
|
|
void maybeSplitExpr();
|
|
StringRef getLine();
|
|
size_t getLineNumber();
|
|
size_t getColumnNumber();
|
|
};
|
|
|
|
} // namespace lld::elf
|
|
|
|
#endif
|