558 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			558 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * $Id: bootstrp.c,v 1.10 2005-05-30 07:27:29 bacon Exp $
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 */
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#include <xp/stx/bootstrp.h>
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#include <xp/stx/symbol.h>
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#include <xp/stx/class.h>
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#include <xp/stx/object.h>
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#include <xp/stx/hash.h>
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#include <xp/stx/misc.h>
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static void __create_bootstrapping_objects (xp_stx_t* stx);
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static void __create_builtin_classes (xp_stx_t* stx);
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static void __filein_kernel (xp_stx_t* stx);
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static xp_stx_word_t __count_names (const xp_stx_char_t* str);
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static void __set_names (
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	xp_stx_t* stx, xp_stx_word_t* array, const xp_stx_char_t* str);
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static xp_stx_word_t __count_subclasses (const xp_stx_char_t* str);
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static void __set_subclasses (
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	xp_stx_t* stx, xp_stx_word_t* array, const xp_stx_char_t* str);
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static void __set_metaclass_subclasses (
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	xp_stx_t* stx, xp_stx_word_t* array, const xp_stx_char_t* str);
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struct class_info_t 
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{
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	const xp_stx_char_t* name;
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	const xp_stx_char_t* superclass;
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	const xp_stx_char_t* instance_variables;
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	const xp_stx_char_t* class_variables;
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	const xp_stx_char_t* pool_dictionaries;
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	const int is_indexable;
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};
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typedef struct class_info_t class_info_t;
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static class_info_t class_info[] =
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{
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	{
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		XP_STX_TEXT("Object"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("UndefinedObject"),
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		XP_STX_TEXT("Object"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{ 
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		XP_STX_TEXT("Behavior"),
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		XP_STX_TEXT("Object"),
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		XP_STX_TEXT("spec methods superclass"),
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{ 
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		XP_STX_TEXT("Class"),
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		XP_STX_TEXT("Behavior"),
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		XP_STX_TEXT("name variables classVariables poolDictionaries"),
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{ 
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		XP_STX_TEXT("Metaclass"),
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		XP_STX_TEXT("Behavior"),
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		XP_STX_TEXT("instanceClass"),
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("Block"),
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		XP_STX_TEXT("Object"),
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		XP_STX_TEXT("context argCount argLoc bytePointer"),
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("Boolean"),
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		XP_STX_TEXT("Object"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("True"),
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		XP_STX_TEXT("Boolean"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("False"),
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		XP_STX_TEXT("Boolean"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("Context"),
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		XP_STX_TEXT("Object"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("Method"),
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		XP_STX_TEXT("Object"),
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		XP_STX_TEXT("text message bytecodes literals stackSize temporarySize class"),
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("Magnitude"),
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		XP_STX_TEXT("Object"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("Collection"),
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		XP_STX_TEXT("Magnitude"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	},
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	{
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		XP_STX_TEXT("IndexedCollection"),
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		XP_STX_TEXT("Collection"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		1
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	},
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	{
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		XP_STX_TEXT("Array"),
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		XP_STX_TEXT("IndexedCollection"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		1
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	},
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	{
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		XP_STX_TEXT("SymbolTable"),
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		XP_STX_TEXT("IndexedCollection"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		1
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	},
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	{
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		XP_STX_TEXT("SystemDictionary"),
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		XP_STX_TEXT("IndexedCollection"),
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		1
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	},
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	{
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		XP_NULL,
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		0
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	}
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};
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xp_stx_word_t xp_stx_new_array (xp_stx_t* stx, xp_stx_word_t size)
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{
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	xp_stx_word_t x;
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	xp_stx_assert (stx->class_array != stx->nil);
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	x = xp_stx_alloc_word_object (stx, size);
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	XP_STX_CLASS(stx,x) = stx->class_array;
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	return x;	
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}
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int xp_stx_bootstrap (xp_stx_t* stx)
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{
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	xp_stx_word_t symbol_Smalltalk;
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	xp_stx_word_t object_meta;
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	__create_bootstrapping_objects (stx);
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	/* object, class, and array are precreated for easier instantiation
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	 * of builtin classes */
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	stx->class_object = xp_stx_new_class (stx, XP_STX_TEXT("Object"));
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	stx->class_class = xp_stx_new_class (stx, XP_STX_TEXT("Class"));
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	stx->class_array = xp_stx_new_class (stx, XP_STX_TEXT("Array"));
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	__create_builtin_classes (stx);
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	/* (Object class) setSuperclass: Class */
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	object_meta = XP_STX_CLASS(stx,stx->class_object);
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	XP_STX_WORDAT(stx,object_meta,XP_STX_METACLASS_SUPERCLASS) = stx->class_class;
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	/* instance class for Object is set here as it is not 
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	 * set in __create_builtin_classes */
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	XP_STX_WORDAT(stx,object_meta,XP_STX_METACLASS_INSTANCE_CLASS) = stx->class_object;
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	/* for some fun here */
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	{
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		xp_stx_word_t array;
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		array = xp_stx_new_array (stx, 1);
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		XP_STX_WORDAT(stx,array,0) = object_meta;
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		XP_STX_WORDAT(stx,stx->class_class,XP_STX_CLASS_SUBCLASSES) = array;
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	}
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	/* more initialization */
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	XP_STX_CLASS(stx,stx->symbol_table) = 
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		xp_stx_lookup_class (stx, XP_STX_TEXT("SymbolTable"));
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	XP_STX_CLASS(stx,stx->smalltalk) = 
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		xp_stx_lookup_class (stx, XP_STX_TEXT("SystemDictionary"));
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	symbol_Smalltalk = 
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		xp_stx_new_symbol (stx, XP_STX_TEXT("Smalltalk"));
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	xp_stx_hash_insert (stx, stx->smalltalk,
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		xp_stx_hash_char_object(stx,symbol_Smalltalk),
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		symbol_Smalltalk, stx->smalltalk);	
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	/* create #nil, #true, #false */
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	xp_stx_new_symbol (stx, XP_STX_TEXT("nil"));
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	xp_stx_new_symbol (stx, XP_STX_TEXT("true"));
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	xp_stx_new_symbol (stx, XP_STX_TEXT("false"));
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	/* nil setClass: UndefinedObject */
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	XP_STX_CLASS(stx,stx->nil) =
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		xp_stx_lookup_class (stx, XP_STX_TEXT("UndefinedObject"));
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	/* true setClass: True */
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	XP_STX_CLASS(stx,stx->true) =
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		xp_stx_lookup_class (stx, XP_STX_TEXT("True"));
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	/* fales setClass: False */
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	XP_STX_CLASS(stx,stx->false) = 
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		xp_stx_lookup_class (stx, XP_STX_TEXT("False"));
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	__filein_kernel (stx);
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	return 0;
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}
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static void __create_bootstrapping_objects (xp_stx_t* stx)
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{
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	xp_stx_word_t class_SymlinkMeta;
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	xp_stx_word_t class_SymbolMeta; 
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	xp_stx_word_t class_MetaclassMeta;
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	xp_stx_word_t class_PairlinkMeta;
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	xp_stx_word_t symbol_Symlink;
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	xp_stx_word_t symbol_Symbol; 
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	xp_stx_word_t symbol_Metaclass;
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	xp_stx_word_t symbol_Pairlink;
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	/* allocate three keyword objects */
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	stx->nil = xp_stx_alloc_word_object (stx, 0);
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	stx->true = xp_stx_alloc_word_object (stx, 0);
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	stx->false = xp_stx_alloc_word_object (stx, 0);
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	xp_stx_assert (stx->nil == XP_STX_NIL);
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	xp_stx_assert (stx->true == XP_STX_TRUE);
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	xp_stx_assert (stx->false == XP_STX_FALSE);
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	/* symbol table & system dictionary */
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	/* TODO: symbol table and dictionary size */
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	stx->symbol_table = xp_stx_alloc_word_object (stx, 1000); 
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	stx->smalltalk = xp_stx_alloc_word_object (stx, 2000);
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	stx->class_symlink = /* Symlink */
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		xp_stx_alloc_word_object(stx,XP_STX_CLASS_SIZE);
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	stx->class_symbol =  /* Symbol */
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		xp_stx_alloc_word_object(stx,XP_STX_CLASS_SIZE);
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	stx->class_metaclass =  /* Metaclass */
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		xp_stx_alloc_word_object(stx,XP_STX_CLASS_SIZE);
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	stx->class_pairlink =  /* Pairlink */
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		xp_stx_alloc_word_object(stx,XP_STX_CLASS_SIZE);
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	/* Metaclass is a class so it has the same structure 
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	 * as a normal class. "Metaclass class" is an instance of
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	 * Metaclass. */
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	class_SymlinkMeta = /* Symlink class */
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		xp_stx_alloc_word_object(stx,XP_STX_METACLASS_SIZE);
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	class_SymbolMeta = /* Symbol class */
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		xp_stx_alloc_word_object(stx,XP_STX_METACLASS_SIZE);
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	class_MetaclassMeta = /* Metaclass class */
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		xp_stx_alloc_word_object(stx,XP_STX_METACLASS_SIZE);
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	class_PairlinkMeta = /* Pairlink class */
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		xp_stx_alloc_word_object(stx,XP_STX_METACLASS_SIZE);
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	/* (Symlink class) setClass: Metaclass */
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	XP_STX_CLASS(stx,class_SymlinkMeta) = stx->class_metaclass;
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	/* (Symbol class) setClass: Metaclass */
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	XP_STX_CLASS(stx,class_SymbolMeta) = stx->class_metaclass;
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	/* (Metaclass class) setClass: Metaclass */
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	XP_STX_CLASS(stx,class_MetaclassMeta) = stx->class_metaclass;
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	/* (Pairlink class) setClass: Metaclass */
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	XP_STX_CLASS(stx,class_PairlinkMeta) = stx->class_metaclass;
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	/* Symlink setClass: (Symlink class) */
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	XP_STX_CLASS(stx,stx->class_symlink) = class_SymlinkMeta;
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	/* Symbol setClass: (Symbol class) */
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	XP_STX_CLASS(stx,stx->class_symbol) = class_SymbolMeta;
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	/* Metaclass setClass: (Metaclass class) */
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	XP_STX_CLASS(stx,stx->class_metaclass) = class_MetaclassMeta;
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	/* Pairlink setClass: (Pairlink class) */
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	XP_STX_CLASS(stx,stx->class_pairlink) = class_PairlinkMeta;
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	/* (Symlink class) setSpec: XP_STX_CLASS_SIZE */
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	XP_STX_WORDAT(stx,class_SymlinkMeta,XP_STX_CLASS_SPEC) = 
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		XP_STX_TO_SMALLINT((XP_STX_CLASS_SIZE << 1) | 0x00);
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	/* (Symbol class) setSpec: CLASS_SIZE */
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	XP_STX_WORDAT(stx,class_SymbolMeta,XP_STX_CLASS_SPEC) = 
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		XP_STX_TO_SMALLINT((XP_STX_CLASS_SIZE << 1) | 0x00);
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	/* (Metaclass class) setSpec: CLASS_SIZE */
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	XP_STX_WORDAT(stx,class_MetaclassMeta,XP_STX_CLASS_SPEC) = 
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		XP_STX_TO_SMALLINT((XP_STX_CLASS_SIZE << 1) | 0x00);
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	/* (Pairlink class) setSpec: CLASS_SIZE */
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	XP_STX_WORDAT(stx,class_PairlinkMeta,XP_STX_CLASS_SPEC) = 
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		XP_STX_TO_SMALLINT((XP_STX_CLASS_SIZE << 1) | 0x00);
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	/* specs for class_metaclass, class_pairlink, 
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	 * class_symbol, class_symlink are set later in 
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	 * __create_builtin_classes */
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	/* #Symlink */
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	symbol_Symlink = xp_stx_new_symbol (stx, XP_STX_TEXT("Symlink"));
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	/* #Symbol */
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	symbol_Symbol = xp_stx_new_symbol (stx, XP_STX_TEXT("Symbol"));
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	/* #Metaclass */
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	symbol_Metaclass = xp_stx_new_symbol (stx, XP_STX_TEXT("Metaclass"));
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	/* #Pairlink */
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	symbol_Pairlink = xp_stx_new_symbol (stx, XP_STX_TEXT("Pairlink"));
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	/* Symlink setName: #Symlink */
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	XP_STX_WORDAT(stx,stx->class_symlink,XP_STX_CLASS_NAME) = symbol_Symlink;
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	/* Symbol setName: #Symbol */
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	XP_STX_WORDAT(stx,stx->class_symbol,XP_STX_CLASS_NAME) = symbol_Symbol;
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	/* Metaclass setName: #Metaclass */
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	XP_STX_WORDAT(stx,stx->class_metaclass,XP_STX_CLASS_NAME) = symbol_Metaclass;
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	/* Pairlink setName: #Pairlink */
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	XP_STX_WORDAT(stx,stx->class_pairlink,XP_STX_CLASS_NAME) = symbol_Pairlink;
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	/* register class names into the system dictionary */
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	xp_stx_hash_insert (stx, stx->smalltalk,
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		xp_stx_hash_char_object(stx, symbol_Symlink),
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		symbol_Symlink, stx->class_symlink);
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	xp_stx_hash_insert (stx, stx->smalltalk,
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		xp_stx_hash_char_object(stx, symbol_Symbol),
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		symbol_Symbol, stx->class_symbol);
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	xp_stx_hash_insert (stx, stx->smalltalk,
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		xp_stx_hash_char_object(stx, symbol_Metaclass),
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		symbol_Metaclass, stx->class_metaclass);
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	xp_stx_hash_insert (stx, stx->smalltalk,
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		xp_stx_hash_char_object(stx, symbol_Pairlink),
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		symbol_Pairlink, stx->class_pairlink);
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}
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static void __create_builtin_classes (xp_stx_t* stx)
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{
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	class_info_t* p;
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	xp_stx_word_t class, superclass, array;
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	xp_stx_class_t* class_obj, * superclass_obj;
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	xp_stx_word_t metaclass;
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	xp_stx_metaclass_t* metaclass_obj;
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	xp_stx_word_t n, spec;
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	xp_stx_assert (stx->class_array != stx->nil);
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 | 
						|
	for (p = class_info; p->name != XP_NULL; p++) {
 | 
						|
		class = xp_stx_lookup_class(stx, p->name);
 | 
						|
		if (class == stx->nil) {
 | 
						|
			class = xp_stx_new_class (stx, p->name);
 | 
						|
		}
 | 
						|
 | 
						|
		xp_stx_assert (class != stx->nil);
 | 
						|
		class_obj = (xp_stx_class_t*)XP_STX_WORD_OBJECT(stx, class);
 | 
						|
		class_obj->superclass = (p->superclass == XP_NULL)?
 | 
						|
			stx->nil: xp_stx_lookup_class(stx,p->superclass);
 | 
						|
 | 
						|
		spec = 0;
 | 
						|
		if (p->superclass != XP_NULL) {
 | 
						|
			xp_stx_word_t meta;
 | 
						|
			xp_stx_metaclass_t* meta_obj;
 | 
						|
 | 
						|
			superclass = xp_stx_lookup_class(stx,p->superclass);
 | 
						|
			xp_stx_assert (superclass != stx->nil);
 | 
						|
 | 
						|
			meta = class_obj->header.class;
 | 
						|
			meta_obj = (xp_stx_metaclass_t*)XP_STX_WORD_OBJECT(stx,meta);
 | 
						|
			meta_obj->superclass = XP_STX_CLASS(stx,superclass);
 | 
						|
			meta_obj->instance_class = class;
 | 
						|
 | 
						|
			while (superclass != stx->nil) {
 | 
						|
				superclass_obj = (xp_stx_class_t*)
 | 
						|
					XP_STX_WORD_OBJECT(stx,superclass);
 | 
						|
				spec += XP_STX_FROM_SMALLINT(superclass_obj->spec >> 1);
 | 
						|
				superclass = superclass_obj->superclass;
 | 
						|
			}
 | 
						|
 | 
						|
		}
 | 
						|
 | 
						|
		if (p->instance_variables != XP_NULL) {
 | 
						|
			n = __count_names (p->instance_variables);
 | 
						|
			array = xp_stx_new_array (stx, n);
 | 
						|
			__set_names (stx, XP_STX_DATA(stx,array), p->instance_variables);
 | 
						|
			class_obj->variables = array; 
 | 
						|
		}
 | 
						|
 | 
						|
		class_obj->spec = XP_STX_TO_SMALLINT(((spec + n) << 1) | p->is_indexable);
 | 
						|
 | 
						|
		if (p->class_variables != XP_NULL) {
 | 
						|
			n = __count_names (p->class_variables);
 | 
						|
			array = xp_stx_new_array (stx, n);
 | 
						|
			__set_names (stx, XP_STX_DATA(stx,array), p->class_variables);
 | 
						|
			class_obj->class_variables = array;
 | 
						|
		}
 | 
						|
 | 
						|
		/*
 | 
						|
		TODO:
 | 
						|
		if (p->pool_dictionaries != XP_NULL) {
 | 
						|
		}
 | 
						|
		*/
 | 
						|
	}
 | 
						|
 | 
						|
	/* fill subclasses */
 | 
						|
	for (p = class_info; p->name != XP_NULL; p++) {
 | 
						|
		n = __count_subclasses (p->name);
 | 
						|
		array = xp_stx_new_array (stx, n);
 | 
						|
		__set_subclasses (stx, XP_STX_DATA(stx,array), p->name);
 | 
						|
 | 
						|
		class = xp_stx_lookup_class(stx, p->name);
 | 
						|
		xp_stx_assert (class != stx->nil);
 | 
						|
		class_obj = (xp_stx_class_t*)XP_STX_WORD_OBJECT(stx, class);
 | 
						|
		class_obj->subclasses = array;
 | 
						|
	}
 | 
						|
 | 
						|
	/* fill subclasses for metaclasses */
 | 
						|
	for (p = class_info; p->name != XP_NULL; p++) {
 | 
						|
		n = __count_subclasses (p->name);
 | 
						|
		array = xp_stx_new_array (stx, n);
 | 
						|
		__set_metaclass_subclasses (stx, XP_STX_DATA(stx,array), p->name);
 | 
						|
 | 
						|
		class = xp_stx_lookup_class(stx, p->name);
 | 
						|
		xp_stx_assert (class != stx->nil);
 | 
						|
		metaclass = XP_STX_CLASS(stx,class);
 | 
						|
		metaclass_obj = (xp_stx_metaclass_t*)XP_STX_WORD_OBJECT(stx, metaclass);
 | 
						|
		metaclass_obj->subclasses = array;
 | 
						|
	}
 | 
						|
}
 | 
						|
 | 
						|
static xp_stx_word_t __count_names (const xp_stx_char_t* str)
 | 
						|
{
 | 
						|
	xp_stx_word_t n = 0;
 | 
						|
	const xp_stx_char_t* p = str;
 | 
						|
 | 
						|
	do {
 | 
						|
		while (*p == XP_STX_CHAR(' ') ||
 | 
						|
		       *p == XP_STX_CHAR('\t')) p++;
 | 
						|
		if (*p == XP_STX_CHAR('\0')) break;
 | 
						|
 | 
						|
		n++;
 | 
						|
		while (*p != XP_STX_CHAR(' ') && 
 | 
						|
		       *p != XP_STX_CHAR('\t') && 
 | 
						|
		       *p != XP_STX_CHAR('\0')) p++;
 | 
						|
	} while (1);
 | 
						|
 | 
						|
	return n;
 | 
						|
}
 | 
						|
 | 
						|
static void __set_names (
 | 
						|
	xp_stx_t* stx, xp_stx_word_t* array, const xp_stx_char_t* str)
 | 
						|
{
 | 
						|
	xp_stx_word_t n = 0;
 | 
						|
	const xp_stx_char_t* p = str;
 | 
						|
	const xp_stx_char_t* name;
 | 
						|
 | 
						|
	do {
 | 
						|
		while (*p == XP_STX_CHAR(' ') ||
 | 
						|
		       *p == XP_STX_CHAR('\t')) p++;
 | 
						|
		if (*p == XP_STX_CHAR('\0')) break;
 | 
						|
 | 
						|
		name = p;
 | 
						|
		while (*p != XP_STX_CHAR(' ') && 
 | 
						|
		       *p != XP_STX_CHAR('\t') && 
 | 
						|
		       *p != XP_STX_CHAR('\0')) p++;
 | 
						|
 | 
						|
		array[n++] = xp_stx_new_symbolx (stx, name, p - name);
 | 
						|
	} while (1);
 | 
						|
}
 | 
						|
 | 
						|
static xp_stx_word_t __count_subclasses (const xp_stx_char_t* str)
 | 
						|
{
 | 
						|
	class_info_t* p;
 | 
						|
	xp_stx_word_t n = 0;
 | 
						|
 | 
						|
	for (p = class_info; p->name != XP_NULL; p++) {
 | 
						|
		if (p->superclass == XP_NULL) continue;
 | 
						|
		if (xp_stx_strcmp (str, p->superclass) == 0) n++;
 | 
						|
	}
 | 
						|
 | 
						|
	return n;
 | 
						|
}
 | 
						|
 | 
						|
static void __set_subclasses (
 | 
						|
	xp_stx_t* stx, xp_stx_word_t* array, const xp_stx_char_t* str)
 | 
						|
{
 | 
						|
	class_info_t* p;
 | 
						|
	xp_stx_word_t n = 0, class;
 | 
						|
 | 
						|
	for (p = class_info; p->name != XP_NULL; p++) {
 | 
						|
		if (p->superclass == XP_NULL) continue;
 | 
						|
		if (xp_stx_strcmp (str, p->superclass) != 0) continue;
 | 
						|
		class = xp_stx_lookup_class (stx, p->name);
 | 
						|
		xp_stx_assert (class != stx->nil);
 | 
						|
		array[n++] = class;
 | 
						|
	}
 | 
						|
}
 | 
						|
 | 
						|
static void __set_metaclass_subclasses (
 | 
						|
	xp_stx_t* stx, xp_stx_word_t* array, const xp_stx_char_t* str)
 | 
						|
{
 | 
						|
	class_info_t* p;
 | 
						|
	xp_stx_word_t n = 0, class;
 | 
						|
 | 
						|
	for (p = class_info; p->name != XP_NULL; p++) {
 | 
						|
		if (p->superclass == XP_NULL) continue;
 | 
						|
		if (xp_stx_strcmp (str, p->superclass) != 0) continue;
 | 
						|
		class = xp_stx_lookup_class (stx, p->name);
 | 
						|
		xp_stx_assert (class != stx->nil);
 | 
						|
		array[n++] = XP_STX_CLASS(stx,class);
 | 
						|
	}
 | 
						|
}
 | 
						|
 | 
						|
static void __filein_kernel (xp_stx_t* stx)
 | 
						|
{
 | 
						|
	class_info_t* p;
 | 
						|
 | 
						|
	for (p = class_info; p->name != XP_NULL; p++) {
 | 
						|
		/* TODO: */
 | 
						|
	}
 | 
						|
}
 |