static void
_syx_parser_parse_block_message_pattern (SyxParser *self)
{
SyxToken token = syx_lexer_get_last_token (self->lexer);
SyxParserScope *scope = self->_argument_scopes + self->_argument_scopes_top;
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, ":")))
{
SYX_CODE_ARGUMENTS_COUNT(self->method) = syx_small_integer_new (0);
return;
}
while (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, ":"))
{
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
assert (token.type == SYX_TOKEN_NAME_CONST);
scope->stack[scope->top++] = syx_strdup (token.value.string);
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
}
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, "|")))
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected | after block message pattern\n"));
syx_token_free (token);
syx_lexer_next_token (self->lexer);
SYX_CODE_ARGUMENTS_COUNT(self->method) = syx_small_integer_new (scope->top);
return;
}
/*!
Do parse.
\return TRUE if parsing was successful, otherwise FALSE
*/
syx_bool
syx_parser_parse (SyxParser *self, syx_bool skip_message_pattern)
{
SyxToken token;
SyxParserScope scope;
token = syx_lexer_next_token (self->lexer);
if (token.type == SYX_TOKEN_END)
return TRUE;
if (skip_message_pattern)
{
scope.start = self->_argument_names_top;
scope.end = self->_argument_names_top;
self->_argument_scopes.stack[(syx_int32) self->_argument_scopes.top++] = scope;
}
else
_syx_parser_parse_message_pattern (self);
if (!self->_in_block)
_syx_parser_parse_primitive (self);
_syx_parser_parse_temporaries (self);
if (self->_in_block)
syx_bytecode_push_constant (self->bytecode, SYX_BYTECODE_CONST_NIL);
_syx_parser_parse_body (self);
syx_bytecode_do_special (self->bytecode, SYX_BYTECODE_SELF_RETURN);
SYX_CODE_BYTECODES(self->method) = syx_byte_array_new_ref (self->bytecode->code_top * sizeof (syx_uint16),
(syx_uint8 *)self->bytecode->code);
SYX_CODE_LITERALS(self->method) = syx_array_new_ref (self->bytecode->literals_top,
self->bytecode->literals);
if (self->_in_block)
SYX_BLOCK_ARGUMENT_STACK_TOP(self->method) = syx_small_integer_new (self->_argument_scopes.stack[self->_argument_scopes.top-1].start);
else
{
SYX_METHOD_ARGUMENT_STACK_SIZE(self->method) = syx_small_integer_new (self->_argument_names_top);
SYX_METHOD_TEMPORARY_STACK_SIZE(self->method) = syx_small_integer_new (self->_temporary_names_top);
}
SYX_CODE_STACK_SIZE(self->method) = syx_small_integer_new (self->bytecode->stack_size + 1);
SYX_CODE_TEXT(self->method) = syx_string_new (self->lexer->text +
syx_find_first_non_whitespace (self->lexer->text));
SYX_CODE_CLASS(self->method) = self->klass;
return TRUE;
}
static void
_syx_parser_parse_temporaries (SyxParser *self)
{
SyxToken token = syx_lexer_get_last_token (self->lexer);
SyxParserScope *scope = self->_temporary_scopes + self->_temporary_scopes_top;
if (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, "|"))
{
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
while (token.type == SYX_TOKEN_NAME_CONST)
{
scope->stack[scope->top++] = syx_strdup (token.value.string);
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
}
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, "|")))
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Temporary list not terminated by bar"));
syx_token_free (token);
syx_lexer_next_token (self->lexer);
}
/* we choose the maximum number so we can hold all the temporaries without forgetting
previous parsed optimized blocks. */
if (SYX_IS_NIL (SYX_CODE_TEMPORARIES_COUNT (self->method))
|| scope->top > SYX_SMALL_INTEGER (SYX_CODE_TEMPORARIES_COUNT (self->method)))
SYX_CODE_TEMPORARIES_COUNT(self->method) = syx_small_integer_new (scope->top);
}
int main (int argc, char *argv[])
{
SyxOop instance;
SyxOop context;
SyxOop process;
SyxOop result;
/* initialize Syx */
syx_init (argc, argv, NULL);
/* load the default image */
syx_memory_load_image (NULL);
/* now file in class and method declarations from our ST file */
syx_file_in_blocking ("add.st");
/* create a Sum instance */
instance = syx_object_new (syx_globals_at ("Sum"));
/* create a Process */
process = syx_process_new ();
/* create a MethodContext which sends the #with:and: message */
context = syx_send_message (instance, // the receiver
"with:and:", // the selector
2, // the number of arguments
syx_small_integer_new (41), // first argument
syx_small_integer_new (22));
/* enter the context in the created process */
syx_interp_enter_context (process, context);
/* execute the process in blocking mode */
syx_process_execute_blocking (process);
/* fetch the last returned object (an instance variable of Process) */
result = SYX_PROCESS_RETURNED_OBJECT (process);
printf ("The result is %d\n", SYX_SMALL_INTEGER (result));
/* cleanup Syx */
syx_quit ();
return 0;
}
static void
_syx_parser_parse_method_message_pattern (SyxParser *self)
{
SyxToken token = syx_lexer_get_last_token (self->lexer);
syx_char selector[256] = {0};
SyxParserScope scope;
scope.start = self->_argument_names_top;
scope.end = self->_argument_names_top;
switch (token.type)
{
case SYX_TOKEN_NAME_CONST:
/* Unary message pattern */
SYX_METHOD_SELECTOR(self->method) = syx_symbol_new (token.value.string);
syx_token_free (token);
syx_lexer_next_token (self->lexer);
break;
case SYX_TOKEN_BINARY:
/* Binary message pattern */
SYX_METHOD_SELECTOR(self->method) = syx_symbol_new (token.value.string);
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_NAME_CONST)
syx_error ("Expected name constant for argument name\n");
self->_argument_names[self->_argument_names_top++] = token.value.string;
scope.end++;
syx_lexer_next_token (self->lexer);
break;
case SYX_TOKEN_NAME_COLON:
/* Keyword message pattern */
while (token.type == SYX_TOKEN_NAME_COLON)
{
strcat (selector, token.value.string);
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_NAME_CONST)
syx_error ("Expected name constant for argument name\n");
self->_argument_names[self->_argument_names_top++] = token.value.string;
scope.end++;
token = syx_lexer_next_token (self->lexer);
}
SYX_METHOD_SELECTOR(self->method) = syx_symbol_new (selector);
break;
default:
syx_error ("Invalid message pattern\n");
}
self->_argument_scopes.stack[(syx_int32) self->_argument_scopes.top++] = scope;
SYX_CODE_ARGUMENT_COUNT(self->method) = syx_small_integer_new (scope.end - scope.start);
}
static void
_syx_parser_parse_method_message_pattern (SyxParser *self)
{
SyxToken token = syx_lexer_get_last_token (self->lexer);
syx_char selector[0xFF] = {0};
SyxParserScope *scope = self->_argument_scopes + self->_argument_scopes_top;
switch (token.type)
{
case SYX_TOKEN_NAME_CONST:
/* Unary message pattern */
SYX_METHOD_SELECTOR(self->method) = syx_symbol_new (token.value.string);
syx_token_free (token);
syx_lexer_next_token (self->lexer);
break;
case SYX_TOKEN_BINARY:
/* Binary message pattern */
SYX_METHOD_SELECTOR(self->method) = syx_symbol_new (token.value.string);
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_NAME_CONST)
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected name constant for argument name\n"));
scope->stack[scope->top++] = syx_strdup (token.value.string);
syx_token_free (token);
syx_lexer_next_token (self->lexer);
break;
case SYX_TOKEN_NAME_COLON:
/* Keyword message pattern */
while (token.type == SYX_TOKEN_NAME_COLON)
{
strcat (selector, token.value.string);
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_NAME_CONST)
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected name constant for argument name\n"));
scope->stack[scope->top++] = syx_strdup (token.value.string);
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
}
SYX_METHOD_SELECTOR(self->method) = syx_symbol_new (selector);
break;
default:
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Invalid message pattern\n"));
}
SYX_CODE_ARGUMENTS_COUNT(self->method) = syx_small_integer_new (scope->top);
}
static void
_syx_parser_parse_block_message_pattern (SyxParser *self)
{
SyxToken token = syx_lexer_get_last_token (self->lexer);
SyxParserScope scope;
scope.start = self->_argument_names_top;
scope.end = self->_argument_names_top;
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, ":")))
{
self->_argument_scopes.stack[(syx_int32) self->_argument_scopes.top++] = scope;
SYX_CODE_ARGUMENT_COUNT(self->method) = syx_small_integer_new (0);
return;
}
while (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, ":"))
{
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
assert (token.type == SYX_TOKEN_NAME_CONST);
self->_argument_names[self->_argument_names_top++] = token.value.string;
scope.end++;
token = syx_lexer_next_token (self->lexer);
}
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, "|")))
syx_error ("Expected | after block message pattern\n");
syx_token_free (token);
syx_lexer_next_token (self->lexer);
self->_argument_scopes.stack[(syx_int32) self->_argument_scopes.top++] = scope;
SYX_CODE_ARGUMENT_COUNT(self->method) = syx_small_integer_new (scope.end - scope.start);
return;
}
static SyxOop
_syx_parser_parse_literal_array (SyxParser *self)
{
SyxOop elements[256];
syx_varsize top = 0;
SyxToken token;
token = syx_lexer_next_token (self->lexer);
while (! (token.type == SYX_TOKEN_END || (token.type == SYX_TOKEN_CLOSING && token.value.character == ')')))
{
switch (token.type)
{
case SYX_TOKEN_ARRAY_BEGIN:
elements[top++] = _syx_parser_parse_literal_array (self);
break;
case SYX_TOKEN_INT_CONST:
elements[top++] = syx_small_integer_new (token.value.integer);
break;
case SYX_TOKEN_BINARY:
if (!strcmp (token.value.string, "("))
{
elements[top++] = _syx_parser_parse_literal_array (self);
syx_token_free (token);
break;
}
case SYX_TOKEN_NAME_CONST:
case SYX_TOKEN_NAME_COLON:
case SYX_TOKEN_SYM_CONST:
elements[top++] = syx_symbol_new (token.value.string);
syx_token_free (token);
break;
case SYX_TOKEN_STR_CONST:
elements[top++] = syx_string_new (token.value.string);
syx_token_free (token);
break;
case SYX_TOKEN_CHAR_CONST:
elements[top++] = syx_character_new (token.value.character);
break;
default:
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Illegal text in literal array\n"));
break;
}
token = syx_lexer_next_token (self->lexer);
}
return syx_array_new_ref (top, elements);
}
/*!
Do parse.
\return TRUE if parsing was successful, otherwise FALSE
*/
syx_bool
syx_parser_parse (SyxParser *self, syx_bool skip_message_pattern)
{
SyxToken token;
token = syx_lexer_next_token (self->lexer);
if (token.type == SYX_TOKEN_END)
return TRUE;
self->_temporary_scopes[self->_temporary_scopes_top].top = 0;
self->_argument_scopes[self->_argument_scopes_top].top = 0;
if (!skip_message_pattern)
_syx_parser_parse_message_pattern (self);
if (!self->_in_block)
_syx_parser_parse_primitive (self);
_syx_parser_parse_temporaries (self);
if (self->_in_block)
syx_bytecode_push_constant (self->bytecode, SYX_BYTECODE_CONST_NIL);
_syx_parser_parse_body (self);
syx_bytecode_do_special (self->bytecode, SYX_BYTECODE_SELF_RETURN);
SYX_CODE_BYTECODES(self->method) = syx_byte_array_new_ref (self->bytecode->code_top * sizeof (syx_uint16),
(syx_uint8 *)self->bytecode->code);
SYX_CODE_LITERALS(self->method) = syx_array_new_ref (self->bytecode->literals_top,
self->bytecode->literals);
SYX_CODE_STACK_SIZE(self->method) = syx_small_integer_new (self->bytecode->stack_size + 1);
SYX_CODE_TEXT(self->method) = syx_string_new (self->lexer->text +
syx_find_first_non_whitespace (self->lexer->text));
SYX_CODE_CLASS(self->method) = self->klass;
/* Free arguments and temporaries of this scope */
_syx_parser_free_arguments (self);
_syx_parser_free_temporaries (self);
return TRUE;
}
int SYX_CDECL
main (int argc, char *argv[])
{
SyxOop process, context;
SyxOop arguments;
SyxOop structTestClass;
SyxOop structTest;
syx_init (0, NULL, "..");
syx_memory_load_image ("test.sim");
syx_scheduler_init ();
puts ("- Initializing test classes");
syx_cold_file_in ("stsupport/TestCStruct.st");
structTestClass = syx_globals_at ("TestCStruct");
syx_object_initialize (structTestClass);
structTest = syx_object_new (structTestClass);
puts ("- Test fields alignment 1");
arguments = syx_array_new_size (6);
SYX_OBJECT_DATA(arguments)[0] = syx_small_integer_new ((syx_nint)&test1.f1 - (syx_nint)&test1);
SYX_OBJECT_DATA(arguments)[1] = syx_small_integer_new ((syx_nint)&test1.f2 - (syx_nint)&test1);
SYX_OBJECT_DATA(arguments)[2] = syx_small_integer_new ((syx_nint)&test1.f3 - (syx_nint)&test1);
SYX_OBJECT_DATA(arguments)[3] = syx_small_integer_new ((syx_nint)&test1.f4 - (syx_nint)&test1);
SYX_OBJECT_DATA(arguments)[4] = syx_small_integer_new ((syx_nint)&test1.f5 - (syx_nint)&test1);
SYX_OBJECT_DATA(arguments)[5] = syx_small_integer_new ((syx_nint)&test1.f6 - (syx_nint)&test1);
process = syx_process_new ();
context = syx_send_message (structTest,
"testOffsets:from:",
2, arguments, syx_symbol_new ("Test1Struct"));
syx_interp_enter_context (process, context);
syx_process_execute_blocking (process);
puts ("- Test fields alignment 2");
arguments = syx_array_new_size (14);
SYX_OBJECT_DATA(arguments)[0] = syx_small_integer_new ((syx_nint)&test2.f1 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[1] = syx_small_integer_new ((syx_nint)&test2.f2 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[2] = syx_small_integer_new ((syx_nint)&test2.f3 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[3] = syx_small_integer_new ((syx_nint)&test2.f4 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[4] = syx_small_integer_new ((syx_nint)&test2.f5 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[5] = syx_small_integer_new ((syx_nint)&test2.f6 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[6] = syx_small_integer_new ((syx_nint)&test2.f7 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[7] = syx_small_integer_new ((syx_nint)&test2.f8 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[8] = syx_small_integer_new ((syx_nint)&test2.f9 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[9] = syx_small_integer_new ((syx_nint)&test2.f10 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[10] = syx_small_integer_new ((syx_nint)&test2.f11 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[11] = syx_small_integer_new ((syx_nint)&test2.f12 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[12] = syx_small_integer_new ((syx_nint)&test2.f13 - (syx_nint)&test2);
SYX_OBJECT_DATA(arguments)[13] = syx_small_integer_new ((syx_nint)&test2.f14 - (syx_nint)&test2);
process = syx_process_new ();
context = syx_send_message (structTest,
"testOffsets:from:",
2, arguments, syx_symbol_new ("Test2Struct"));
syx_interp_enter_context (process, context);
syx_process_execute_blocking (process);
puts ("- Test fields alignment 3");
arguments = syx_array_new_size (6);
SYX_OBJECT_DATA(arguments)[0] = syx_small_integer_new ((syx_nint)&test3.f1 - (syx_nint)&test3);
SYX_OBJECT_DATA(arguments)[1] = syx_small_integer_new ((syx_nint)&test3.f2 - (syx_nint)&test3);
SYX_OBJECT_DATA(arguments)[2] = syx_small_integer_new ((syx_nint)&test3.f3 - (syx_nint)&test3);
SYX_OBJECT_DATA(arguments)[3] = syx_small_integer_new ((syx_nint)&test3.f4 - (syx_nint)&test3);
SYX_OBJECT_DATA(arguments)[4] = syx_small_integer_new ((syx_nint)&test3.f5 - (syx_nint)&test3);
SYX_OBJECT_DATA(arguments)[5] = syx_small_integer_new ((syx_nint)&test3.f6 - (syx_nint)&test3);
process = syx_process_new ();
context = syx_send_message (structTest,
"testOffsets:from:",
2, arguments, syx_symbol_new ("Test3Struct"));
syx_interp_enter_context (process, context);
syx_process_execute_blocking (process);
puts ("- Test reading");
test3.f1 = 240;
test3.f2 = 7143;
test3.f3 = 'R';
test3.f4 = 199.11822;
test3.f5 = 23.5; /* won't read yet */
process = syx_process_new ();
context = syx_send_binary_message (structTest,
"testRead:",
SYX_POINTER_CAST_OOP (&test3));
syx_interp_enter_context (process, context);
syx_process_execute_blocking (process);
puts ("- Test writing");
process = syx_process_new ();
context = syx_send_binary_message (structTest,
"testWrite:",
SYX_POINTER_CAST_OOP (&test3));
syx_interp_enter_context (process, context);
syx_process_execute_blocking (process);
assert(test3.f1 == 320);
assert(test3.f2 == 10293);
assert(test3.f3 == ',');
assert(test3.f4 == 291.4837);
/* Double to float conversion
assert(test3.f5 == 76.119);
*/
/* won't write longs yet */
puts ("- Test unions");
test4.f1 = 'S';
process = syx_process_new ();
context = syx_send_binary_message (structTest,
"testUnion:",
SYX_POINTER_CAST_OOP (&test4));
syx_interp_enter_context (process, context);
syx_process_execute_blocking (process);
assert(test4.f1 == 'T');
syx_quit ();
return 0;
}
static void
_syx_parser_parse_primitive (SyxParser *self)
{
SyxToken token = syx_lexer_get_last_token (self->lexer);
syx_int32 prim_index;
SYX_METHOD_PRIMITIVE(self->method) = syx_small_integer_new (-1);
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, "<")))
return;
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_NAME_COLON)
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected name colon"));
if (!strcmp (token.value.string, "primitive:"))
{
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_STR_CONST)
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected a string containing the primitive to be called"));
prim_index = syx_primitive_get_index (token.value.string);
if (prim_index < 0)
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Unknown primitive named", token.value.string));
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, ">")))
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected >"));
syx_token_free (token);
SYX_METHOD_PRIMITIVE (self->method) = syx_small_integer_new (prim_index);
syx_lexer_next_token (self->lexer);
}
else if (!strcmp (token.value.string, "cCall:"))
{
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_STR_CONST)
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected a string containing the primitive to be called"));
syx_bytecode_gen_literal (self->bytecode, syx_symbol_new (token.value.string));
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, ">"))
{
syx_token_free (token);
syx_bytecode_gen_literal (self->bytecode, syx_nil);
SYX_METHOD_PRIMITIVE (self->method) = syx_small_integer_new (-2);
syx_lexer_next_token (self->lexer);
return;
}
if (! (token.type == SYX_TOKEN_NAME_COLON && !strcmp (token.value.string, "plugin:")))
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected plugin:"));
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type != SYX_TOKEN_STR_CONST)
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected a string containing the plugin name"));
syx_bytecode_gen_literal (self->bytecode, syx_symbol_new (token.value.string));
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (! (token.type == SYX_TOKEN_BINARY && !strcmp (token.value.string, ">")))
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected >"));
syx_token_free (token);
syx_lexer_next_token (self->lexer);
SYX_METHOD_PRIMITIVE(self->method) = syx_small_integer_new (-2);
}
else
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected primitive or cCall"));
return;
}
static syx_bool
_syx_parser_parse_term (SyxParser *self)
{
SyxToken token = syx_lexer_get_last_token (self->lexer);
syx_bool super_term = FALSE;
switch (token.type)
{
case SYX_TOKEN_NAME_CONST:
super_term = _syx_parser_parse_name_term (self, token.value.string);
syx_token_free (token);
break;
case SYX_TOKEN_STR_CONST:
syx_bytecode_push_literal (self->bytecode, syx_string_new (token.value.string));
syx_token_free (token);
break;
case SYX_TOKEN_INT_CONST:
syx_bytecode_push_literal (self->bytecode, syx_small_integer_new (token.value.integer));
syx_token_free (token);
break;
#ifdef HAVE_LIBGMP
case SYX_TOKEN_LARGE_INT_CONST:
syx_bytecode_push_literal (self->bytecode,
syx_large_integer_new_mpz (token.value.large_integer));
syx_token_free (token);
break;
#endif
case SYX_TOKEN_FLOAT_CONST:
syx_bytecode_push_literal (self->bytecode, syx_float_new (token.value.floating));
syx_token_free (token);
break;
case SYX_TOKEN_SYM_CONST:
syx_bytecode_push_literal (self->bytecode, syx_symbol_new (token.value.string));
syx_token_free (token);
break;
case SYX_TOKEN_CHAR_CONST:
syx_bytecode_push_literal (self->bytecode, syx_character_new (token.value.character));
syx_token_free (token);
break;
case SYX_TOKEN_ARRAY_BEGIN:
syx_bytecode_push_literal (self->bytecode, _syx_parser_parse_literal_array (self));
syx_token_free (token);
break;
case SYX_TOKEN_BINARY:
if (!strcmp (token.value.string, "("))
{
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
_syx_parser_parse_expression (self);
token = syx_lexer_get_last_token (self->lexer);
if (! (token.type == SYX_TOKEN_CLOSING && token.value.character == ')'))
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected ) after sub expression"));
break;
}
else if (!strcmp (token.value.string, "["))
{
_syx_parser_parse_block (self);
break;
}
else if (!strcmp (token.value.string, "{"))
{
_syx_parser_parse_array (self);
break;
}
else if (!strcmp (token.value.string, "-"))
{
syx_token_free (token);
token = syx_lexer_next_token (self->lexer);
if (token.type == SYX_TOKEN_INT_CONST)
syx_bytecode_push_literal (self->bytecode, syx_small_integer_new (-token.value.integer));
#ifdef HAVE_LIBGMP
else if (token.type == SYX_TOKEN_LARGE_INT_CONST)
{
mpz_neg (*token.value.large_integer, *token.value.large_integer);
syx_bytecode_push_literal (self->bytecode,
syx_large_integer_new_mpz (token.value.large_integer));
}
#endif /* HAVE_LIBGMP */
else if (token.type == SYX_TOKEN_FLOAT_CONST)
syx_bytecode_push_literal (self->bytecode, syx_float_new (-token.value.floating));
else
syx_signal(SYX_ERROR_INTERP, syx_string_new ("Negation not followed by number"));
syx_token_free (token);
break;
}
/* We continue here because of weird binary token used as expression start */
default:
switch (token.type)
{
case SYX_TOKEN_END:
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Unexpected end of input"));
break;
case SYX_TOKEN_STRING_ENTRY:
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Invalid expression start: %s", token.value.string));
syx_token_free (token);
break;
case SYX_TOKEN_CLOSING:
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Unexpected closing: %c", token.value.character));
break;
default:
syx_signal (SYX_ERROR_INTERP, syx_string_new ("Expected expression"));
break;
}
}
syx_lexer_next_token (self->lexer);
return super_term;
}
static syx_bool
_syx_cold_parse_class (SyxLexer *lexer)
{
SyxToken token = syx_lexer_get_last_token (lexer);
SyxOop superclass, subclass;
syx_string subclass_name;
syx_bool existing_class = TRUE;
SyxOop inst_vars, class_vars;
SyxLexer *inst_vars_lexer, *class_vars_lexer;
syx_varsize super_inst_vars_size;
syx_int32 i;
if (token.type != SYX_TOKEN_NAME_CONST)
{
syx_error ("Expected a name constant\n");
syx_token_free (token);
return FALSE;
}
if (!strcmp (token.value.string, "nil"))
superclass = syx_nil;
else
superclass = syx_globals_at (token.value.string);
token = syx_lexer_next_token (lexer);
if (!(token.type == SYX_TOKEN_NAME_COLON && !strcmp (token.value.string, "subclass:")))
{
syx_token_free (token);
syx_error ("Expected #subclass:\n");
return FALSE;
}
syx_token_free (token);
token = syx_lexer_next_token (lexer);
if (token.type != SYX_TOKEN_SYM_CONST)
{
syx_token_free (token);
syx_error ("Expected a symbol constant\n");
return FALSE;
}
subclass_name = syx_strdup (token.value.string);
syx_token_free (token);
subclass = syx_globals_at_if_absent (subclass_name, syx_nil);
if (strcmp (subclass_name, "Object"))
{
if (SYX_IS_NIL (subclass))
existing_class = FALSE;
else
{
existing_class = TRUE;
if (SYX_OOP_NE (SYX_CLASS_SUPERCLASS(subclass), superclass))
{
syx_array_remove (SYX_CLASS_SUBCLASSES (SYX_CLASS_SUPERCLASS (subclass)),
subclass);
SYX_CLASS_SUPERCLASS(subclass) = superclass;
syx_array_add (SYX_CLASS_SUBCLASSES (superclass), subclass, TRUE);
syx_array_remove (SYX_CLASS_SUBCLASSES (SYX_CLASS_SUPERCLASS(syx_object_get_class (subclass))),
syx_object_get_class (subclass));
SYX_CLASS_SUPERCLASS(syx_object_get_class (subclass)) = syx_object_get_class (superclass);
syx_array_add (SYX_CLASS_SUBCLASSES (syx_object_get_class (superclass)),
syx_object_get_class (subclass), TRUE);
}
}
}
token = syx_lexer_next_token (lexer);
if (token.type != SYX_TOKEN_NAME_COLON)
{
syx_token_free (token);
syx_error ("Expected #instanceVariableNames:\n");
return FALSE;
}
syx_token_free (token);
token = syx_lexer_next_token (lexer);
if (token.type != SYX_TOKEN_STR_CONST)
{
syx_token_free (token);
syx_error ("Expected a string as argument for #instanceVariableNames:\n");
return FALSE;
}
inst_vars_lexer = syx_lexer_new (token.value.string);
token = syx_lexer_next_token (lexer);
if (token.type != SYX_TOKEN_NAME_COLON)
{
syx_token_free (token);
syx_error ("Expected #classVariableNames:\n");
return FALSE;
}
syx_token_free (token);
token = syx_lexer_next_token (lexer);
if (token.type != SYX_TOKEN_STR_CONST)
{
syx_token_free (token);
syx_error ("Expected a string as argument for #classVariableNames:\n");
return FALSE;
}
class_vars_lexer = syx_lexer_new (token.value.string);
token = syx_lexer_next_token (lexer);
if (!_IS_EXL_MARK (token))
{
syx_token_free (token);
syx_error ("Class definition must terminate with an exlamation mark\n");
return FALSE;
}
syx_token_free (token);
if (!existing_class)
{
subclass = syx_class_new (superclass);
SYX_CLASS_NAME(subclass) = syx_symbol_new (subclass_name);
syx_globals_at_put (SYX_CLASS_NAME(subclass), subclass);
}
syx_free (subclass_name);
/* Parse instance variables */
inst_vars = _syx_cold_parse_vars (inst_vars_lexer, FALSE);
syx_lexer_free (inst_vars_lexer, TRUE);
/* Fetch superclass instanceSize */
if (SYX_IS_NIL (superclass))
super_inst_vars_size = 0;
else
super_inst_vars_size = SYX_SMALL_INTEGER (SYX_CLASS_INSTANCE_SIZE (superclass));
SYX_CLASS_INSTANCE_VARIABLES(subclass) = inst_vars;
SYX_CLASS_INSTANCE_SIZE(subclass) = syx_small_integer_new (super_inst_vars_size
+ SYX_OBJECT_DATA_SIZE (inst_vars));
/* Now parse class variables */
class_vars = _syx_cold_parse_vars (class_vars_lexer, TRUE);
syx_lexer_free (class_vars_lexer, TRUE);
SYX_CLASS_CLASS_VARIABLES(subclass) = syx_dictionary_new (SYX_OBJECT_DATA_SIZE (class_vars) + 10);
/* translate from array to dictionary */
for (i=0; i < SYX_OBJECT_DATA_SIZE(class_vars); i++)
syx_dictionary_at_symbol_put (SYX_CLASS_CLASS_VARIABLES(subclass),
SYX_OBJECT_DATA(class_vars)[i], syx_nil);
/* get rid of this */
syx_object_free (class_vars);
return TRUE;
}
