ref: c0aff678e9f1a88163781ccad94b889d7961bc57
dir: /src/link/symbol.c/
/* * This file is part of RGBDS. * * Copyright (c) 2019, Eldred Habert and RGBDS contributors. * * SPDX-License-Identifier: MIT */ #include <stdbool.h> #include "link/symbol.h" #include "link/main.h" #include "extern/err.h" #include "hashmap.h" HashMap symbols; struct ForEachArg { void (*callback)(struct Symbol *symbol, void *arg); void *arg; }; static void forEach(void *symbol, void *arg) { struct ForEachArg *callbackArg = (struct ForEachArg *)arg; callbackArg->callback((struct Symbol *)symbol, callbackArg->arg); } void sym_ForEach(void (*callback)(struct Symbol *, void *), void *arg) { struct ForEachArg callbackArg = { .callback = callback, .arg = arg}; hash_ForEach(symbols, forEach, &callbackArg); } void sym_AddSymbol(struct Symbol *symbol) { /* Check if the symbol already exists */ struct Symbol *other = hash_GetElement(symbols, symbol->name); if (other) errx(1, "\"%s\" both in %s from %s(%d) and in %s from %s(%d)", symbol->name, symbol->objFileName, symbol->fileName, symbol->lineNo, other->objFileName, other->fileName, other->lineNo); /* If not, add it */ bool collided = hash_AddElement(symbols, symbol->name, symbol); if (beVerbose && collided) warnx("Symbol hashmap collision occurred!"); } struct Symbol *sym_GetSymbol(char const *name) { return (struct Symbol *)hash_GetElement(symbols, name); } void sym_CleanupSymbols(void) { hash_EmptyMap(symbols); }