mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-10 23:32:09 +00:00
155 lines
3.3 KiB
C
155 lines
3.3 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include "QF/hash.h"
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#include "class.h"
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#include "def.h"
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#include "qfcc.h"
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#include "symtab.h"
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#include "type.h"
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static symtab_t *free_symtabs;
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static symbol_t *free_symbols;
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static const char *
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sym_getkey (void *k, void *unused)
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{
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return ((symbol_t *) k)->name;
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}
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symtab_t *
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new_symtab (symtab_t *parent, stab_type_e type)
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{
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symtab_t *symtab;
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int tabsize = 63;
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ALLOC (16, symtab_t, symtabs, symtab);
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symtab->parent = parent;
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symtab->type = type;
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if (symtab->type == stab_global)
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tabsize = 1023;
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symtab->tab = Hash_NewTable (tabsize, sym_getkey, 0, 0);
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symtab->symtail = &symtab->symbols;
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return symtab;
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}
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symbol_t *
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symtab_lookup (symtab_t *symtab, const char *name)
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{
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symbol_t *symbol;
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while (symtab) {
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if ((symbol = Hash_Find (symtab->tab, name)))
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return symbol;
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symtab = symtab->parent;
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}
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return 0;
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}
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static symbol_t *
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new_symbol (void)
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{
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symbol_t *symbol;
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ALLOC (256, symbol_t, symbols, symbol);
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return symbol;
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}
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static void
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add_symbol (symtab_t *symtab, symbol_t *symbol)
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{
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Hash_Add (symtab->tab, symbol);
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symbol->next = *symtab->symtail;
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*symtab->symtail = symbol;
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symtab->symtail = &symbol->next;
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}
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symbol_t *
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symtab_add_type (symtab_t *symtab, const char *name, type_t *type)
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{
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symbol_t *symbol;
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if ((symbol = Hash_Find (symtab->tab, name))) {
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// duplicate symbol
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}
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symbol = new_symbol ();
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symbol->name = name;
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symbol->type = sym_type;
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symbol->s.type = type;
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add_symbol (symtab, symbol);
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return symbol;
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}
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symbol_t *
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symtab_add_def (symtab_t *symtab, const char *name, def_t *def)
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{
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symbol_t *symbol;
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if ((symbol = Hash_Find (symtab->tab, name))) {
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// duplicate symbol
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}
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symbol = new_symbol ();
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symbol->name = name;
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symbol->type = sym_def;
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symbol->s.def = def;
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add_symbol (symtab, symbol);
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return symbol;
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}
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symbol_t *
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symtab_add_enum (symtab_t *symtab, const char *name, struct enumval_s *enm)
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{
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symbol_t *symbol;
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if ((symbol = Hash_Find (symtab->tab, name))) {
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// duplicate symbol
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}
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symbol = new_symbol ();
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symbol->name = name;
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symbol->type = sym_enum;
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symbol->s.enm = enm;
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add_symbol (symtab, symbol);
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return symbol;
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}
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symbol_t *
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symtab_add_class (symtab_t *symtab, const char *name, class_t *class)
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{
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symbol_t *symbol;
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if ((symbol = Hash_Find (symtab->tab, name))) {
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// duplicate symbol
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}
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symbol = new_symbol ();
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symbol->name = name;
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symbol->type = sym_class;
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symbol->s.class = class;
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add_symbol (symtab, symbol);
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return symbol;
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}
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symtab_t *
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symtab_flat_copy (symtab_t *symtab, symtab_t *parent)
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{
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symtab_t *newtab;
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symbol_t *newsym;
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symbol_t *symbol;
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newtab = new_symtab (parent, stab_local);
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while (symtab) {
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for (symbol = symtab->symbols; symbol; symbol = symbol->next) {
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if (Hash_Find (newtab->tab, symbol->name))
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continue;
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newsym = new_symbol ();
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*newsym = *symbol;
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add_symbol (newtab, newsym);
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}
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symtab = symtab->parent;
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// Set the tail pointer so symbols in ancestor tables come before
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// those in decendent tables.
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newtab->symtail = &newtab->symbols;
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}
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// Reset the tail pointer so any symbols added to newtab come after
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// those copied from the input symbol table chain.
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for (symbol = newtab->symbols; symbol && symbol->next;
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symbol = symbol->next)
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;
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newtab->symtail = symbol ? &symbol->next : &newtab->symbols;
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return newtab;
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}
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