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Revised symbol scoping

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2614 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
2003-11-06 11:22:31 +00:00
parent 4a667ead00
commit 8400fb848a
13 changed files with 682 additions and 596 deletions
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113
src/ca65/symbol.c Normal file
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/*****************************************************************************/
/* */
/* symbol.c */
/* */
/* Parse a symbol name and search for it */
/* */
/* */
/* */
/* (C) 1998-2003 Ullrich von Bassewitz */
/* R<>merstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <string.h>
/* ca65 */
#include "error.h"
#include "nexttok.h"
#include "scanner.h"
#include "symbol.h"
#include "symtab.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/*****************************************************************************/
/* Code */
/*****************************************************************************/
SymEntry* ParseScopedSymName (int AllocNew)
/* Parse a (possibly scoped) symbol name, search for it in the symbol table
* and return the symbol table entry.
*/
{
/* Get the starting table */
SymTable* Scope;
if (Tok == TOK_NAMESPACE) {
Scope = RootScope;
NextTok ();
} else {
Scope = CurrentScope;
}
/* Resolve scopes */
while (1) {
/* An identifier must follow. Remember and skip it. */
char Name[sizeof (SVal)];
if (Tok != TOK_IDENT) {
Error (ERR_IDENT_EXPECTED);
return 0;
}
strcpy (Name, SVal);
NextTok ();
/* If the next token is a namespace token, handle the name as the
* name of a scope, otherwise it's the name of a symbol in that
* scope.
*/
if (Tok == TOK_NAMESPACE) {
/* Search for the child scope */
Scope = SymFindScope (Scope, Name, AllocNew);
/* Skip the namespace token */
NextTok ();
/* If we didn't find the scope, bail out */
if (Scope == 0) {
return 0;
}
} else {
/* Search for the symbol and return it */
return SymFind (Scope, Name, AllocNew);
}
}
}