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Intern strings used as identifiers (for labels, constants, macros, charmaps, etc) (#1980)

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This commit is contained in:
Rangi
2026-05-25 16:22:29 -04:00
committed by GitHub
parent ed19806434
commit cfa0adf295
22 changed files with 341 additions and 218 deletions
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include/asm/symbol.hpp
+20 -21
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@@ -10,6 +10,7 @@
#include <utility>
#include <variant>
#include "asm/intern.hpp"
#include "asm/lexer.hpp"
#include "asm/section.hpp"
@@ -26,7 +27,7 @@ struct Symbol; // Forward declaration for `sym_IsPC`
bool sym_IsPC(Symbol const *sym); // Forward declaration for `getSection`
struct Symbol {
std::string name;
InternedStr name;
SymbolType type;
bool isBuiltin;
bool isExported; // Not relevant for SYM_MACRO or SYM_EQUS
@@ -68,36 +69,34 @@ struct Symbol {
uint32_t getConstantValue() const;
};
bool sym_IsDotScope(std::string const &symName);
bool sym_IsDotScope(InternedStr symName);
void sym_ForEach(void (*callback)(Symbol &));
Symbol *sym_AddLocalLabel(std::string const &symName);
Symbol *sym_AddLabel(std::string const &symName);
Symbol *sym_AddLocalLabel(InternedStr symName);
Symbol *sym_AddLabel(InternedStr symName);
Symbol *sym_AddAnonLabel();
std::string sym_MakeAnonLabelName(uint32_t ofs, bool neg);
void sym_Export(std::string const &symName);
Symbol *sym_AddEqu(std::string const &symName, int32_t value);
Symbol *sym_RedefEqu(std::string const &symName, int32_t value);
Symbol *sym_AddVar(std::string const &symName, int32_t value);
InternedStr sym_MakeAnonLabelName(uint32_t ofs, bool neg);
void sym_Export(InternedStr symName);
Symbol *sym_AddEqu(InternedStr symName, int32_t value);
Symbol *sym_RedefEqu(InternedStr symName, int32_t value);
Symbol *sym_AddVar(InternedStr symName, int32_t value);
int32_t sym_GetRSValue();
void sym_SetRSValue(int32_t value);
// Find a symbol by exact name, bypassing expansion checks
Symbol *sym_FindExactSymbol(std::string const &symName);
Symbol *sym_FindExactSymbol(InternedStr symName);
// Find a symbol, possibly scoped, by name
Symbol *sym_FindScopedSymbol(std::string const &symName);
Symbol *sym_FindScopedSymbol(InternedStr symName);
// Find a scoped symbol by name; do not return `@` or `_NARG` when they have no value
Symbol *sym_FindScopedValidSymbol(std::string const &symName);
Symbol *sym_FindScopedValidSymbol(InternedStr symName);
Symbol const *sym_GetPC();
Symbol *sym_AddMacro(
std::string const &symName, int32_t defLineNo, ContentSpan const &span, bool isQuiet
);
Symbol *sym_Ref(std::string const &symName);
Symbol *sym_AddString(std::string const &symName, std::shared_ptr<std::string> value);
Symbol *sym_RedefString(std::string const &symName, std::shared_ptr<std::string> value);
void sym_Purge(std::string const &symName);
bool sym_IsPurgedExact(std::string const &symName);
bool sym_IsPurgedScoped(std::string const &symName);
Symbol *sym_AddMacro(InternedStr symName, int32_t defLineNo, ContentSpan const &span, bool isQuiet);
Symbol *sym_Ref(InternedStr symName);
Symbol *sym_AddString(InternedStr symName, std::shared_ptr<std::string> value);
Symbol *sym_RedefString(InternedStr symName, std::shared_ptr<std::string> value);
void sym_Purge(InternedStr symName);
bool sym_IsPurgedExact(InternedStr symName);
bool sym_IsPurgedScoped(InternedStr symName);
void sym_Init(time_t now);
// Functions to save and restore the current label scopes.