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/*
Written by Pieter J. Schoenmakers <tiggr@ics.ele.tue.nl>
Copyright (C) 1996 Pieter J. Schoenmakers.
This file is part of TOM. TOM is distributed under the terms of the
TOM License, a copy of which can be found in the TOM distribution; see
the file LICENSE.
$Id: OTMObjectVar.m,v 1.30 1998/01/05 01:13:34 tiggr Exp $ */
#define OTMOBJECTVAR_DECLARE_PRIVATE_METHODS
#import "OTMObjectVar.h"
#import "OTMCustomMethod.h"
#import "OTMExtension.h"
#import "OTMType.h"
#import "LTTPatches.h"
#import "global.h"
@implementation OTMObjectVar
+(OTMObjectVar *) variableWithExtension: (OTMExtension *) e
name: (TLString *) n
type: (OTMType *) t
qualifiers: (otm_qualifiers) q
{
return [[self gcAlloc] initWithExtension: e name: n type: t qualifiers: q];
}
-(void) compileAssignment: (OTMExpr *) rhs
{
/* XXX This used to include a `|| STACK_PROTECT == SP_MARK', but I'm not
sure if that is correct, or was simply here because of the copy-paste
from OTMLocalVar.m... Fri Apr 5 01:57:08 1996, --Tiggr. */
if (flag_atomic_gc || ![type isObjectType] || [self staticp])
[super compileAssignment: rhs];
else
{
BOOL self_class_p = [[[ext structure] meta] classp];
BOOL current_class_p = [output_current_context classp];
id <TLString> tom_state_name
= current_class_p ? tom_c_state_field_name : tom_i_state_field_name;
id foo;
if (!current_class_p && self_class_p)
foo = formac (nil, @"%@->%@.%@", TO_NAME_SELF, tom_state_name,
TO_NAME_ISA);
else
foo = formac (nil, @"%@", TO_NAME_SELF);
formac (of, @"%@%@ = %@ (%@, %@);", [self nl], [self outputReference],
TO_TRT_ASSIGN_OBJECT_VAR, foo, [rhs result]);
}
}
-(void) compileDeclaration
{
if (![self staticp])
ABORT ();
if (th_local)
formac (of, @"extern int _tlo_%@;\n", [self outputName]);
else
formac (of, @"extern %@ %@;\n", [type outputTypeName], [self outputName]);
}
-(void) dumpInfo: (id <TLOutputStream>) s
{
if ([self staticp])
formac (s, @"\n (%# %@ (%@%#))", name,
[[type actualSelf: [output_current_context semantics]] typeInfo],
th_local ? @"local " : @"static ", [self outputName]);
else
{
LTTMeta *m = [[ext structure] meta];
if (![m classp] && !(m == ltt_instance_state
|| [ltt_instance_state isProperSub: m]))
error_for (self, @"instance variable `%@' in stateless %@",
name, ltt_meta_name (m));
formac (s, @"\n (%# %@)", name,
[[type actualSelf: [output_current_context semantics]] typeInfo]);
}
}
-(OTMExtension *) extension
{
return ext;
}
-(void) gcReference
{
MARK (ext);
[super gcReference];
}
-(id) initWithExtension: (OTMExtension *) e
name: (TLString *) n
type: (OTMType *) t
qualifiers: (otm_qualifiers) q
{
if (![super initWithName: n type: t])
return nil;
qualifiers = q;
ext = e;
/* XXX Check nonsensical qualifiers. */
if (!Q_PROTECTION (q))
q = Q_SET_PROTECTION (q, OQ_PROTECTED);
[self setQualifiers: q];
return self;
}
-(BOOL) isThreadLocal
{
return th_local;
}
-(id <TLString>) result
{
return [self outputReference];
}
-(id <TLString>) outputName
{
if (![self staticp])
return [super outputName];
return formac (nil, @"%@_%@", [[ext structure] outputName],
[super outputName]);
}
-(id) outputReference
{
LTTExtension *x = [ext structure];
id s = nil;
if ([self staticp])
{
if (th_local)
return formac (nil, @"*(%@ *) (_th_locals + _tlo_%@)",
[type outputTypeName], [self outputName]);
else
return [self outputName];
}
else
{
#if CACHE_EXTENSION_POINTER
s = formac (s, @"%@%@", TO_EXT_POINTER_PREFIX, [x outputName]);
#else /* !CACHE_EXTENSION_POINTER */
s = formac (s, @"(%@)", [ext outputOffsetFrom: output_current_context]);
#endif
return formac (s, @"->%@", [self outputName]);
}
}
-(id) precompile
{
[ext compileDeclareExtensionIdentityName];
[[[[ext structure] meta] semantics] precompile];
#if CACHE_EXTENSION_POINTER
if (current_method && ![self staticp])
[current_method declareExtensionPointer: ext];
#endif
if (th_local && current_method)
[current_method setNeedLocalPointer];
return [super precompile];
}
-(void) setIsThreadLocal
{
th_local = 1;
}
@end
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