X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Foberon.c;h=1b7f5d9b19315aa614ef96e1665f21c11054da9b;hb=afdfb61e64fb9c7d05a7612812739aa0d9a560fc;hp=c1e86d229c340de3f475029119b6335ea08f4aba;hpb=9aa6ede8ebe1b901501ad3cb49d79d6811a79dc9;p=dsw-obn.git

diff --git a/src/oberon.c b/src/oberon.c
index c1e86d2..1b7f5d9 100644
--- a/src/oberon.c
+++ b/src/oberon.c
@@ -10,8 +10,6 @@
 
 #include <gc.h>
 
-#include "../include/oberon.h"
-
 #include "oberon-internals.h"
 #include "oberon-type-compat.h"
 #include "oberon-common.h"
@@ -171,6 +169,17 @@ oberon_make_char(oberon_context_t * ctx, int64_t i)
 	return expr;
 }
 
+static oberon_expr_t *
+oberon_make_string(oberon_context_t * ctx, char * str)
+{
+	oberon_expr_t * expr;
+	expr = oberon_new_item(MODE_STRING, ctx -> string_type, true);
+	expr -> item.integer = str[0];
+	expr -> item.real = str[0];
+	expr -> item.string = str;
+	return expr;
+}
+
 static oberon_expr_t *
 oberon_make_real_typed(oberon_context_t * ctx, double r, oberon_type_t * result)
 {
@@ -351,15 +360,20 @@ oberon_get_char(oberon_context_t * ctx)
 	if(ctx -> code[ctx -> code_index])
 	{
 		ctx -> code_index += 1;
+		ctx -> xloc.col += 1;
 		ctx -> c = ctx -> code[ctx -> code_index];
 	}
 }
 
 static void
-oberon_init_scaner(oberon_context_t * ctx, const char * code)
+oberon_init_scaner(oberon_context_t * ctx, oberon_scanner_t * s)
 {
-	ctx -> code = code;
+	ctx -> code = s -> code;
 	ctx -> code_index = 0;
+	ctx -> xloc.source = s -> source;
+	ctx -> xloc.line = 1;
+	ctx -> xloc.col = 1;
+	ctx -> loc = ctx -> xloc;
 	ctx -> c = ctx -> code[ctx -> code_index];
 }
 
@@ -678,12 +692,40 @@ oberon_read_number(oberon_context_t * ctx)
 	ctx -> real = real;
 }
 
+static void
+oberon_get_lined_char(oberon_context_t * ctx)
+{
+	do
+	{
+		if(ctx -> c == 0xD)
+		{
+			oberon_get_char(ctx);
+			if(ctx -> c == 0xA)
+			{
+				oberon_get_char(ctx);
+			}
+			ctx -> xloc.line += 1;
+			ctx -> xloc.col = 1;
+		}
+		else if(ctx -> c == 0xA)
+		{
+			oberon_get_char(ctx);
+			ctx -> xloc.line += 1;
+			ctx -> xloc.col = 1;
+		}
+		else
+		{
+			oberon_get_char(ctx);
+		}
+	} while(ctx -> c == 0xD || ctx -> c == 0xA);
+}
+
 static void
 oberon_skip_space(oberon_context_t * ctx)
 {
 	while(isspace(ctx -> c))
 	{
-		oberon_get_char(ctx);
+		oberon_get_lined_char(ctx);
 	}
 }
 
@@ -695,19 +737,19 @@ oberon_read_comment(oberon_context_t * ctx)
 	{
 		if(ctx -> c == '(')
 		{
-			oberon_get_char(ctx);
+			oberon_get_lined_char(ctx);
 			if(ctx -> c == '*')
 			{
-				oberon_get_char(ctx);
+				oberon_get_lined_char(ctx);
 				nesting += 1;
 			}
 		}
 		else if(ctx -> c == '*')
 		{
-			oberon_get_char(ctx);
+			oberon_get_lined_char(ctx);
 			if(ctx -> c == ')')
 			{
-				oberon_get_char(ctx);
+				oberon_get_lined_char(ctx);
 				nesting -= 1;
 			}
 		}
@@ -717,7 +759,7 @@ oberon_read_comment(oberon_context_t * ctx)
 		}
 		else
 		{
-			oberon_get_char(ctx);
+			oberon_get_lined_char(ctx);
 		}
 	}
 }
@@ -899,6 +941,8 @@ oberon_read_token(oberon_context_t * ctx)
 {
 	oberon_skip_space(ctx);
 
+	ctx -> loc = ctx -> xloc;
+
 	int c = ctx -> c;
 	if(isalpha(c) || c == '_')
 	{
@@ -1044,6 +1088,12 @@ oberon_cast_expr(oberon_context_t * ctx, oberon_expr_t * expr, oberon_type_t * p
 		cast = oberon_new_item(MODE_CHAR, ctx -> char_type, true);
 		cast -> item.integer = expr -> item.string[0];
 	}
+	else if(oberon_is_record_type(pref) || oberon_is_pointer_to_record(pref))
+	{
+		assert(expr -> is_item);
+		cast = oberon_new_item(MODE_AS, pref, expr -> read_only);
+		cast -> item.parent = (oberon_item_t *) expr;
+	}
 	else if(!oberon_is_some_types(expr -> result, pref))
 	{
 		cast = oberon_new_operator(OP_CAST, pref, expr, NULL);
@@ -1248,6 +1298,7 @@ oberon_make_call_proc(oberon_context_t * ctx, oberon_item_t * item, int num_args
 	|| ((x) == CHAR) \
 	|| ((x) == STRING) \
 	|| ((x) == NIL) \
+	|| ((x) == LBRACE) \
 	|| ((x) == LPAREN) \
 	|| ((x) == NOT))
 
@@ -1666,9 +1717,7 @@ oberon_factor(oberon_context_t * ctx)
 			oberon_assert_token(ctx, CHAR);
 			break;
 		case STRING:
-			result = ctx -> string_type;
-			expr = oberon_new_item(MODE_STRING, result, true);
-			expr -> item.string = ctx -> string;
+			expr = oberon_make_string(ctx, ctx -> string);
 			oberon_assert_token(ctx, STRING);
 			break;
 		case REAL:
@@ -1705,7 +1754,7 @@ oberon_make_bin_op(oberon_context_t * ctx, int token, oberon_expr_t * a, oberon_
 	oberon_expr_t * expr;
 	oberon_type_t * result;
 
-	oberon_check_compatible_bin_expr_types(ctx, token, a -> result, b -> result);
+	oberon_check_compatible_bin_expr(ctx, token, a, b);
 	oberon_check_src(ctx, a);
 	if(token != IS)
 	{
@@ -1730,7 +1779,22 @@ oberon_make_bin_op(oberon_context_t * ctx, int token, oberon_expr_t * a, oberon_
 	}
 	else if((token >= EQUAL && token <= GEQ) || token == OR || token == AND)
 	{
-		result = oberon_get_longer_type(ctx, a -> result, b -> result);
+		if(oberon_is_string_of_one(a) && oberon_is_char_type(b -> result))
+		{
+			result = b -> result;
+		}
+		else if(oberon_is_string_of_one(b) && oberon_is_char_type(a -> result))
+		{
+			result = a -> result;
+		}
+		else if(oberon_is_string_of_one(a) && oberon_is_string_of_one(b))
+		{
+			result = ctx -> char_type;
+		}
+		else
+		{
+			result = oberon_get_longer_type(ctx, a -> result, b -> result);
+		}
 
 		if(oberon_is_const(a) && oberon_is_const(b)
 			&& (oberon_is_real_type(result) || oberon_is_integer_type(result)))
@@ -1901,7 +1965,26 @@ oberon_make_bin_op(oberon_context_t * ctx, int token, oberon_expr_t * a, oberon_
 						break;
 				}
 			}
-			else if(oberon_is_number_type(result))
+			else if(oberon_is_real_type(result))
+			{
+				switch(token)
+				{
+					case PLUS:
+						expr = oberon_new_operator(OP_ADD, result, a, b);
+						break;
+					case MINUS:
+						expr = oberon_new_operator(OP_SUB, result, a, b);
+						break;
+					case STAR:
+						expr = oberon_new_operator(OP_MUL, result, a, b);
+						break;
+					default:
+						printf("token %i line %i\n", token, ctx -> loc.line);
+						assert(0);
+						break;
+				}
+			}
+			else if(oberon_is_integer_type(result))
 			{
 				switch(token)
 				{
@@ -1914,7 +1997,14 @@ oberon_make_bin_op(oberon_context_t * ctx, int token, oberon_expr_t * a, oberon_
 					case STAR:
 						expr = oberon_new_operator(OP_MUL, result, a, b);
 						break;
+					case DIV:
+						expr = oberon_new_operator(OP_DIV, result, a, b);
+						break;
+					case MOD:
+						expr = oberon_new_operator(OP_MOD, result, a, b);
+						break;
 					default:
+						printf("token %i line %i\n", token, ctx -> loc.line);
 						assert(0);
 						break;
 				}
@@ -2328,8 +2418,7 @@ oberon_proc_decl_body(oberon_context_t * ctx, oberon_object_t * proc)
 		oberon_error(ctx, "procedure name not matched");
 	}
 
-	if(proc -> type -> base -> class == OBERON_TYPE_NOTYPE
-		&& proc -> has_return == 0)
+	if(proc -> type -> base -> class == OBERON_TYPE_NOTYPE)
 	{
 		oberon_make_return(ctx, NULL);
 	}
@@ -2734,7 +2823,14 @@ oberon_prevent_recursive_pointer(oberon_context_t * ctx, oberon_type_t * type)
 
 	if(type -> recursive)
 	{
-		oberon_error(ctx, "recursive pointer declaration");
+		if(type -> class == OBERON_TYPE_POINTER)
+		{
+			oberon_error(ctx, "recursive pointer declaration");
+		}
+		else
+		{
+			oberon_error(ctx, "recursive array declaration (pointer)");
+		}
 	}
 
 	if(type -> class == OBERON_TYPE_POINTER
@@ -2887,20 +2983,12 @@ static void oberon_initialize_type(oberon_context_t * ctx, oberon_type_t * type)
 static void
 oberon_initialize_record_fields(oberon_context_t * ctx, oberon_type_t * type)
 {
-	if(type -> class != OBERON_TYPE_RECORD)
-	{
-		return;
-	}
+	assert(type -> class == OBERON_TYPE_RECORD);
 
 	int num_fields = type -> num_decl;
 	oberon_object_t * field = type -> decl;
 	for(int i = 0; i < num_fields; i++)
 	{
-		if(field -> type -> class == OBERON_TYPE_POINTER)
-		{
-			oberon_initialize_type(ctx, field -> type);
-		}
-
 		oberon_initialize_object(ctx, field);
 		field = field -> next;
 	}
@@ -2923,39 +3011,50 @@ oberon_initialize_type(oberon_context_t * ctx, oberon_type_t * type)
 
 	type -> initialized = 1;
 
-	if(type -> class == OBERON_TYPE_POINTER)
-	{
-		oberon_initialize_type(ctx, type -> base);
-		oberon_generator_init_type(ctx, type);
-	}
-	else if(type -> class == OBERON_TYPE_ARRAY)
+	if(type -> class == OBERON_TYPE_POINTER || type -> class == OBERON_TYPE_ARRAY)
 	{
-		if(type -> size != 0)
+		if(type -> class == OBERON_TYPE_ARRAY
+			&& type -> size != 0
+			&& type -> base -> class == OBERON_TYPE_ARRAY
+			&& type -> base -> size == 0)
 		{
-			if(type -> base -> class == OBERON_TYPE_ARRAY)
-			{
-				if(type -> base -> size == 0)
-				{
-					oberon_error(ctx, "open array not allowed as array element");
-				}
-			}
+			oberon_error(ctx, "open array not allowed as array element");
 		}
 
-		oberon_initialize_type(ctx, type -> base);		
-		oberon_generator_init_type(ctx, type);
+		oberon_type_t * rec = type -> base;
+		while(rec -> class == OBERON_TYPE_ARRAY || rec -> class == OBERON_TYPE_POINTER)
+		{
+			rec = rec -> base;
+		}
+
+		if(rec -> class == OBERON_TYPE_RECORD
+			&& rec -> initialized == 0)
+		{
+			rec -> initialized = 1;
+			oberon_generator_init_type(ctx, rec);
+			oberon_initialize_type(ctx, type -> base);
+			oberon_generator_init_type(ctx, type);
+			oberon_initialize_record_fields(ctx, rec);
+		}
+		else
+		{
+			oberon_initialize_type(ctx, type -> base);
+			oberon_generator_init_type(ctx, type);
+		}
 	}
 	else if(type -> class == OBERON_TYPE_RECORD)
 	{
+		printf("Init type: RECORD\n");
 		oberon_generator_init_type(ctx, type);
 		oberon_initialize_record_fields(ctx, type);
 	}
 	else if(type -> class == OBERON_TYPE_PROCEDURE)
 	{
+		printf("Init type: PROCEDURE\n");
 		int num_fields = type -> num_decl;
 		oberon_object_t * field = type -> decl;
 		for(int i = 0; i < num_fields; i++)
 		{
-			//oberon_initialize_object(ctx, field);
 			oberon_initialize_type(ctx, field -> type);
 			field = field -> next;
 		}
@@ -3132,7 +3231,7 @@ oberon_case_labels(oberon_context_t * ctx, oberon_expr_t * val)
 	oberon_expr_t * cond2;
 
 	e1 = (oberon_expr_t *) oberon_const_expr(ctx);
-	
+
 	e2 = NULL;
 	if(ctx -> token == DOTDOT)
 	{
@@ -3402,7 +3501,7 @@ oberon_statement(oberon_context_t * ctx)
 			oberon_error(ctx, "condition must be boolean");
 		}
 
-		oberon_generate_branch(ctx, cond, true, begin);
+		oberon_generate_branch(ctx, cond, false, begin);
 	}
 	else if(ctx -> token == FOR)
 	{
@@ -3543,14 +3642,14 @@ oberon_import_module(oberon_context_t * ctx, char * alias, char * name)
 
 	if(m == NULL)
 	{
-		const char * code;
-		code = ctx -> import_module(name);
-		if(code == NULL)
+		oberon_scanner_t * s;
+		s = ctx -> import_module(name);
+		if(s == NULL)
 		{
-			oberon_error(ctx, "no such module");
+			oberon_error(ctx, "no such module %s", name);
 		}
 
-		m = oberon_compile_module(ctx, code);
+		m = oberon_compile_module(ctx, s);
 		assert(m);
 	}
 
@@ -3794,7 +3893,7 @@ oberon_make_abs_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
 	arg = list_args;
 	oberon_check_src(ctx, arg);
 
-	if(oberon_is_number_type(arg -> result))
+	if(!oberon_is_number_type(arg -> result))
 	{
 		oberon_error(ctx, "ABS accepts only numbers");
 	}
@@ -3828,7 +3927,7 @@ oberon_make_inc_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
 		oberon_error(ctx, "too few arguments");
 	}
 
-	if(num_args > 1)
+	if(num_args > 2)
 	{
 		oberon_error(ctx, "too mach arguments");
 	}
@@ -3842,8 +3941,23 @@ oberon_make_inc_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
 		oberon_error(ctx, "expect integer");
 	}
 
+	oberon_expr_t * step;
+	if(num_args == 2)
+	{
+		step = list_args -> next;
+		oberon_check_src(ctx, step);
+		if(!oberon_is_integer_type(step -> result))
+		{
+			oberon_error(ctx, "expect integer");
+		}
+	}
+	else
+	{
+		step = oberon_make_integer(ctx, 1);
+	}
+
 	oberon_expr_t * expr;
-	expr = oberon_make_bin_op(ctx, PLUS, dst, oberon_make_integer(ctx, 1));
+	expr = oberon_make_bin_op(ctx, PLUS, dst, step);
 	oberon_assign(ctx, expr, dst);
 }
 
@@ -3927,7 +4041,7 @@ oberon_make_dec_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
 		oberon_error(ctx, "too few arguments");
 	}
 
-	if(num_args > 1)
+	if(num_args > 2)
 	{
 		oberon_error(ctx, "too mach arguments");
 	}
@@ -3941,8 +4055,23 @@ oberon_make_dec_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
 		oberon_error(ctx, "expect integer");
 	}
 
+	oberon_expr_t * step;
+	if(num_args == 2)
+	{
+		step = list_args -> next;
+		oberon_check_src(ctx, step);
+		if(!oberon_is_integer_type(step -> result))
+		{
+			oberon_error(ctx, "expect integer");
+		}
+	}
+	else
+	{
+		step = oberon_make_integer(ctx, 1);
+	}
+
 	oberon_expr_t * expr;
-	expr = oberon_make_bin_op(ctx, MINUS, dst, oberon_make_integer(ctx, 1));
+	expr = oberon_make_bin_op(ctx, MINUS, dst, step);
 	oberon_assign(ctx, expr, dst);
 }
 
@@ -4398,7 +4527,7 @@ oberon_make_ord_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
 	arg = list_args;
 	oberon_check_src(ctx, arg);
 
-	if(!oberon_is_char_type(arg -> result))
+	if(!oberon_is_char_type(arg -> result) && !oberon_is_string_of_one(arg))
 	{
 		oberon_error(ctx, "expected char");
 	}
@@ -4410,7 +4539,7 @@ oberon_make_ord_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
 	}
 	else
 	{
-		expr = oberon_cast_expr(ctx, arg, ctx -> int_type);
+		expr = oberon_cast_expr(ctx, arg, ctx -> shortint_type);
 	}
 	return expr;
 }
@@ -4835,6 +4964,8 @@ oberon_create_context(ModuleImportCallback import_module)
 		/* Types */
 		oberon_new_intrinsic_type(ctx, "BYTE", ctx -> system_byte_type);
 		oberon_new_intrinsic_type(ctx, "PTR", ctx -> system_ptr_type);
+		oberon_new_intrinsic_type(ctx, "INT32", ctx -> int_type);
+		oberon_new_intrinsic_type(ctx, "SET32", ctx -> set_type);
 
 		/* Functions */
 		oberon_new_intrinsic(ctx, "CC", oberon_make_cc_call, NULL);
@@ -4854,10 +4985,12 @@ oberon_destroy_context(oberon_context_t * ctx)
 }
 
 oberon_module_t *
-oberon_compile_module(oberon_context_t * ctx, const char * newcode)
+oberon_compile_module(oberon_context_t * ctx, oberon_scanner_t * s)
 {
 	const char * code = ctx -> code;
 	int code_index = ctx -> code_index;
+	oberon_location_t loc = ctx -> loc;
+	oberon_location_t xloc = ctx -> xloc;
 	char c = ctx -> c;
 	int token = ctx -> token;
 	char * string = ctx -> string;
@@ -4879,13 +5012,15 @@ oberon_compile_module(oberon_context_t * ctx, const char * newcode)
 	ctx -> mod = module;
 	ctx -> module_list = module;
 
-	oberon_init_scaner(ctx, newcode);
+	oberon_init_scaner(ctx, s);
 	oberon_parse_module(ctx);
 
 	module -> ready = 1;
 
 	ctx -> code = code;
 	ctx -> code_index = code_index;
+	ctx -> loc = loc;
+	ctx -> xloc = xloc;
 	ctx -> c = c;
 	ctx -> token = token;
 	ctx -> string = string;