fixed the method lookup bug in exec.c

stix/kernel/Apex.st

@@ -304,7 +304,6 @@
 	{
 		self class cannotInstantiate
 	}
-
 }
 
 #class Object(Apex)

stix/kernel/Class.st

@@ -19,7 +19,8 @@
 
 
 	## ########################################################################
-	## most of the following methods can actuall become class methods of Apex.
+	## most of the following methods can actually become class methods of Apex.
+	## if the instance varibles can be made accessible from the Apex class.
 	## ########################################################################
 
 	#method name

stix/kernel/Stdio.st

@@ -1,17 +1,18 @@
 #class(#word) Stdio(Object)
 {
+
 	#method(#class) new: size
 	{
 		##self prohibited
 		##raise exception. prohibited...
-		^nil.
+		^(super new: 1)
 	}
 
 	#method(#class) new
 	{
 		##self prohibited
 		##raise exception. prohibited...
-		^nil.
+		^(super new: 1)
 	}
 
 	#method(#class) open: name for: mode
@@ -37,4 +38,11 @@
 
 #class(#word) Stdio2(Stdio)
 {
+	#method(#class) new
+	{
+		##self prohibited
+		##raise exception. prohibited...
+		^(super new).
+	}
+
 }

stix/kernel/test-014.st

@@ -124,9 +124,12 @@
 		System logNl: S'\0\0\0END OF MAIN\0AB\0\0\0C\0\0\0'.
 
 
-		v1 := Stdio open: '/tmp/1.txt' for: 'w+'.
+		##v1 := Stdio2 open: '/tmp/1.txt' for: 'w+'.
+		v1 := Stdio2 new open: '/tmp/1.txt' for: 'w+'.
 		v1 xxx.
 		v1 close.
+		nil isNil ifTrue: [ 'NIL NIL NIL' dump. ].
+		(Apex new) notNil ifTrue: [ 'APEX NIL NIL NIL' dump. ].
 	}
 
 }

stix/lib/comp.c

@@ -2478,19 +2478,20 @@ static int compile_class_level_variables (stix_t* stix)
 				var_info_t var;
 
 /*
-TODO: check variability conflict.
+TODO: more check on variability conflict.
 if it's a indexed class, check if the superclass is fixed or index.
 if super is fixed and self is fixed or variable-pointer, no restriction.
 if super is fixed and self is variable-nonpointer, no instance varaible in the super side and in the self side.
 if super is variable-pointer, self must be a variable-pointer. can't be fixed either
 if super is variable-nonpointer, self must be a variable-nonpointer of the same type. can't be fixed either
 if super is variable-nonpointer, no instance variable is allowed.
-				if (stix->c->cls.flags & CLASS_INDEXED)
+*/
+				if (dcl_type == VAR_INSTANCE && (stix->c->cls.flags & CLASS_INDEXED) && (stix->c->cls.indexed_type != STIX_OBJ_TYPE_OOP))
 				{
 					set_syntax_error (stix, STIX_SYNERR_VARNAMEDUP, TOKEN_LOC(stix), TOKEN_NAME(stix));
 					return -1;
 				}
-*/
+
 				if (find_class_level_variable(stix, STIX_NULL, TOKEN_NAME(stix), &var) >= 0 ||
 				    stix_lookupdic (stix, stix->sysdic, TOKEN_NAME(stix)) ||  /* conflicts with a top global name */
 				    stix_lookupdic (stix, stix->c->cls.ns_oop, TOKEN_NAME(stix))) /* conflicts with a global name in the class'es name space */

stix/lib/exec.c

@@ -987,35 +987,34 @@ static stix_oop_method_t find_method (stix_t* stix, stix_oop_t receiver, const s
 	int dic_no;
 /* TODO: implement method lookup cache */
 
-#if defined(STIX_DEBUG_VM_METHOD_LOOKUP)
-	STIX_LOG3 (stix, STIX_LOG_IC | STIX_LOG_DEBUG, "Method lookup - Finding method %.*S for %O in ", message->len, message->ptr, receiver);
-#endif
-
 	cls = (stix_oop_class_t)STIX_CLASSOF(stix, receiver);
 	if ((stix_oop_t)cls == stix->_class)
 	{
 		/* receiver is a class object (an instance of Class) */
 		c = receiver; 
 		dic_no = STIX_CLASS_MTHDIC_CLASS;
-#if defined(STIX_DEBUG_VM_METHOD_LOOKUP)
-	STIX_LOG1 (stix, STIX_LOG_IC | STIX_LOG_DEBUG, "Method lookup - class method dictionary of %O\n", c);
-#endif
 	}
 	else
 	{
+		/* receiver is not a class object. so take its class */
 		c = (stix_oop_t)cls;
 		dic_no = STIX_CLASS_MTHDIC_INSTANCE;
-#if defined(STIX_DEBUG_VM_METHOD_LOOKUP)
-	STIX_LOG1 (stix, STIX_LOG_IC | STIX_LOG_DEBUG, "Method lookup - instance method dictionary of %O\n", c);
-#endif
 	}
 
-	if (c != stix->_nil)
-	{
+	STIX_ASSERT (c != stix->_nil);
+
 	if (super) 
 	{
-			c = ((stix_oop_class_t)c)->superclass;
-			if (c == stix->_nil) goto not_found;
+		/*
+		stix_oop_method_t m;
+		STIX_ASSERT (STIX_CLASSOF(stix, stix->active_context->origin) == stix->_method_context);
+		m = (stix_oop_method_t)stix->active_context->origin->method_or_nargs;
+		c = ((stix_oop_class_t)m->owner)->superclass;
+		*/
+		STIX_ASSERT (stix->active_method);
+		STIX_ASSERT (stix->active_method->owner);
+		c = ((stix_oop_class_t)stix->active_method->owner)->superclass;
+		if (c == stix->_nil) goto not_found; /* reached the top of the hierarchy */
 	}
 
 	do
@@ -1024,17 +1023,16 @@ static stix_oop_method_t find_method (stix_t* stix, stix_oop_t receiver, const s
 		STIX_ASSERT ((stix_oop_t)mthdic != stix->_nil);
 		STIX_ASSERT (STIX_CLASSOF(stix, mthdic) == stix->_method_dictionary);
 
-/*stix_dumpdic (stix, mthdic, "Method dictionary");*/
 		ass = (stix_oop_association_t)stix_lookupdic (stix, mthdic, message);
 		if (ass) 
 		{
+			/* found the method */
 			STIX_ASSERT (STIX_CLASSOF(stix, ass->value) == stix->_method);
 			return (stix_oop_method_t)ass->value;
 		}
 		c = ((stix_oop_class_t)c)->superclass;
 	}
 	while (c != stix->_nil);
-	}
 
 not_found:
 	if ((stix_oop_t)cls == stix->_class)
@@ -1053,6 +1051,7 @@ not_found:
 		}
 	}
 
+	STIX_DEBUG3 (stix, "Method [%.*S] not found for %O\n", message->len, message->ptr, receiver);
 	stix->errnum = STIX_ENOENT;
 	return STIX_NULL;
 }

stix/lib/logfmt.c

@@ -235,6 +235,7 @@ redo:
 		stix->log.capa = newcapa; 
 	}
 
+
 	while (len > 0)
 	{
 		stix->log.ptr[stix->log.len++] = ch;
@@ -276,11 +277,12 @@ static int put_oocs (stix_t* stix, stix_oow_t mask, const stix_ooch_t* ptr, stix
 		}
 
 		newcapa = STIX_ALIGN(stix->log.len + len, 512); /* TODO: adjust this capacity */
-		tmp = stix_reallocmem (stix, stix->log.ptr, newcapa * STIX_SIZEOF(*tmp));
+		/* +1 to handle line ending injection more easily */
+		tmp = stix_reallocmem (stix, stix->log.ptr, (newcapa + 1) * STIX_SIZEOF(*tmp));
 		if (!tmp) return -1;
 
 		stix->log.ptr = tmp;
-		stix->log.capa = newcapa - 1; /* -1 to handle line ending injection more easily */
+		stix->log.capa = newcapa;
 	}
 
 	STIX_MEMCPY (&stix->log.ptr[stix->log.len], ptr, len * STIX_SIZEOF(*ptr));

stix/lib/stix-prv.h

@@ -49,7 +49,6 @@
 #define STIX_DEBUG_COMPILER
 /*#define STIX_DEBUG_VM_PROCESSOR*/
 /*#define STIX_DEBUG_VM_EXEC*/
-/*#define STIX_DEBUG_VM_METHOD_LOOKUP*/
 #define STIX_DEBUG_BIGINT
 #define STIX_PROFILE_VM