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Attribute work

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1201 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2002-03-18 06:05:04 +00:00
parent fe1f354fe8
commit 5bdb19f63c
2 changed files with 81 additions and 36 deletions
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107
src/cc65/declattr.c
View File

@ -1,15 +1,15 @@
/*****************************************************************************/
/* */
/* declattr.c */
/* declattr.c */
/* */
/* Declaration attributes */
/* */
/* */
/* */
/* (C) 2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* (C) 2000-2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -50,9 +50,23 @@
/* Attribute names */
static const char* const AttrNames [atCount] = {
"alias",
/* Forwards for attribute handlers */
static void AliasAttr (const Declaration* D, DeclAttr* A);
static void UnusedAttr (const Declaration* D, DeclAttr* A);
static void ZeroPageAttr (const Declaration* D, DeclAttr* A);
/* Attribute table */
typedef struct AttrDesc AttrDesc;
struct AttrDesc {
const char Name[12];
void (*Handler) (const Declaration*, DeclAttr*);
};
static const AttrDesc AttrTable [atCount] = {
{ "alias", AliasAttr },
{ "unused", UnusedAttr },
{ "zeropage", ZeroPageAttr },
};
@ -63,28 +77,28 @@ static const char* const AttrNames [atCount] = {
static attrib_t FindAttribute (const char* Attr)
/* Search the attribute and return the corresponding attribute constant.
* Return atNone if the attribute name is not known.
static const AttrDesc* FindAttribute (const char* Attr)
/* Search the attribute and return the corresponding attribute descriptor.
* Return NULL if the attribute name is not known.
*/
{
int A;
unsigned A;
/* For now do a linear search */
for (A = 0; A < atCount; ++A) {
if (strcmp (Attr, AttrNames[A]) == 0) {
if (strcmp (Attr, AttrTable[A].Name) == 0) {
/* Found */
return (attrib_t) A;
return AttrTable + A;
}
}
/* Not found */
return atNone;
return 0;
}
static void AliasAttrib (const Declaration* D, DeclAttr* A)
static void AliasAttr (const Declaration* D, DeclAttr* A)
/* Handle the "alias" attribute */
{
SymEntry* Sym;
@ -123,11 +137,29 @@ static void AliasAttrib (const Declaration* D, DeclAttr* A)
static void UnusedAttr (const Declaration* D attribute ((unused)), DeclAttr* A)
/* Handle the "unused" attribute */
{
/* No parameters */
A->AttrType = atUnused;
}
static void ZeroPageAttr (const Declaration* D attribute ((unused)), DeclAttr* A)
/* Handle the "zeropage" attribute */
{
/* No parameters */
A->AttrType = atZeroPage;
}
void ParseAttribute (const Declaration* D, DeclAttr* A)
/* Parse an additional __attribute__ modifier */
{
ident AttrName;
attrib_t AttrType;
ident AttrName;
const AttrDesc* Attr;
/* Initialize the attribute description with "no attribute" */
A->AttrType = atNone;
@ -154,25 +186,36 @@ void ParseAttribute (const Declaration* D, DeclAttr* A)
/* Map the attribute name to its id, then skip the identifier */
strcpy (AttrName, CurTok.Ident);
AttrType = FindAttribute (AttrName);
Attr = FindAttribute (AttrName);
NextToken ();
/* Handle possible attributes */
switch (AttrType) {
/* Did we find a valid attribute? */
if (Attr) {
case atAlias:
AliasAttrib (D, A);
break;
/* Call the handler */
Attr->Handler (D, A);
default:
/* Attribute not known, maybe typo */
Error ("Illegal attribute: `%s'", AttrName);
break;
/* Read the two closing braces */
ConsumeRParen ();
ConsumeRParen ();
} else {
/* List of tokens to skip */
static const token_t SkipList[] = { TOK_LPAREN, TOK_SEMI };
/* Attribute not known, maybe typo */
Error ("Illegal attribute: `%s'", AttrName);
/* Skip until closing brace or semicolon */
SkipTokens (SkipList, sizeof (SkipList) / sizeof (SkipList[0]));
/* If we have a closing brace, read it, otherwise bail out */
if (CurTok.Tok == TOK_LPAREN) {
/* Read the two closing braces */
ConsumeRParen ();
ConsumeRParen ();
}
}
/* Read the two closing braces */
ConsumeRParen ();
ConsumeRParen ();
}

10
src/cc65/declattr.h
View File

@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* (C) 2000-2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -52,6 +52,8 @@
typedef enum {
atNone = -1, /* No attribute */
atAlias, /* Alias declaration */
atUnused, /* Variable is unused */
atZeroPage, /* Zero page symbol */
atCount /* Number of attributes */
} attrib_t;