diff --git a/src/oberon.c b/src/oberon.c
index efa6fed9c13a02e3e3d5438a8be29c7121768970..2b114eee9cfd9aa01cf08e2e1d05691c2aa036dd 100644 (file)
--- a/src/oberon.c
+++ b/src/oberon.c
#include <math.h>
#include <float.h>
+#include <gc.h>
+
#include "../include/oberon.h"
#include "oberon-internals.h"
static oberon_type_t *
oberon_new_type_ptr(int class)
{
- oberon_type_t * x = malloc(sizeof *x);
+ oberon_type_t * x = GC_MALLOC(sizeof *x);
memset(x, 0, sizeof *x);
x -> class = class;
return x;
oberon_new_operator(int op, oberon_type_t * result, oberon_expr_t * left, oberon_expr_t * right)
{
oberon_oper_t * operator;
- operator = malloc(sizeof *operator);
+ operator = GC_MALLOC(sizeof *operator);
memset(operator, 0, sizeof *operator);
operator -> is_item = 0;
oberon_new_item(int mode, oberon_type_t * result, int read_only)
{
oberon_item_t * item;
- item = malloc(sizeof *item);
+ item = GC_MALLOC(sizeof *item);
memset(item, 0, sizeof *item);
item -> is_item = 1;
return expr;
}
+static oberon_expr_t *
+oberon_make_system_byte(oberon_context_t * ctx, int64_t i)
+{
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_SYSBYTE, ctx -> system_byte_type, true);
+ expr -> item.integer = i;
+ expr -> item.real = i;
+ return expr;
+}
+
static oberon_expr_t *
oberon_make_char(oberon_context_t * ctx, int64_t i)
{
static oberon_scope_t *
oberon_open_scope(oberon_context_t * ctx)
{
- oberon_scope_t * scope = calloc(1, sizeof *scope);
- oberon_object_t * list = calloc(1, sizeof *list);
+ oberon_scope_t * scope = GC_MALLOC(sizeof *scope);
+ memset(scope, 0, sizeof *scope);
+
+ oberon_object_t * list = GC_MALLOC(sizeof *list);
+ memset(list, 0, sizeof *list);
scope -> ctx = ctx;
scope -> list = list;
static oberon_object_t *
oberon_create_object(oberon_scope_t * scope, char * name, int class, bool export, bool read_only)
{
- oberon_object_t * newvar = malloc(sizeof *newvar);
+ oberon_object_t * newvar = GC_MALLOC(sizeof *newvar);
memset(newvar, 0, sizeof *newvar);
newvar -> name = name;
newvar -> class = class;
@@ -326,16 +341,6 @@ oberon_define_object(oberon_scope_t * scope, char * name, int class, bool export
return newvar;
}
-static oberon_object_t *
-oberon_define_type(oberon_scope_t * scope, char * name, oberon_type_t * type, int export)
-{
- oberon_object_t * id;
- id = oberon_define_object(scope, name, OBERON_CLASS_TYPE, export, false, false);
- id -> type = type;
- oberon_generator_init_type(scope -> ctx, type);
- return id;
-}
-
// =======================================================================
// SCANER
// =======================================================================
static void
oberon_read_ident(oberon_context_t * ctx)
{
- int len = 0;
- int i = ctx -> code_index;
+ int start = ctx -> code_index;
- int c = ctx -> code[i];
- while(isalnum(c))
+ oberon_get_char(ctx);
+ while(isalnum(ctx -> c) || ctx -> c == '_')
{
- i += 1;
- len += 1;
- c = ctx -> code[i];
+ oberon_get_char(ctx);
}
- char * ident = malloc(len + 1);
- memcpy(ident, &ctx->code[ctx->code_index], len);
- ident[len] = 0;
+ int end = ctx -> code_index;
+
+ char * ident = GC_MALLOC(end - start + 1);
+ memcpy(ident, &ctx -> code[start], end - start);
+ ident[end - start] = 0;
- ctx -> code_index = i;
- ctx -> c = ctx -> code[i];
ctx -> string = ident;
ctx -> token = IDENT;
}
int len = end_i - start_i;
- ident = malloc(len + 1);
+ ident = GC_MALLOC(len + 1);
memcpy(ident, &ctx -> code[start_i], len);
ident[len] = 0;
oberon_get_char(ctx);
- char * string = calloc(1, end - start + 1);
+ char * string = GC_MALLOC(end - start + 1);
strncpy(string, &ctx -> code[start], end - start);
+ string[end - start] = 0;
ctx -> token = STRING;
ctx -> string = string;
oberon_skip_space(ctx);
int c = ctx -> c;
- if(isalpha(c))
+ if(isalpha(c) || c == '_')
{
oberon_read_ident(ctx);
}
@@ -1041,10 +1044,14 @@ 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
+ else if(!oberon_is_some_types(expr -> result, pref))
{
cast = oberon_new_operator(OP_CAST, pref, expr, NULL);
}
+ else
+ {
+ cast = expr;
+ }
return cast;
}
{
oberon_check_compatible_var_param(ctx, param -> type, arg -> result);
}
- casted[i] = oberon_cast_expr(ctx, arg, param -> type);
+ casted[i] = arg;
+ //casted[i] = oberon_cast_expr(ctx, arg, param -> type);
}
else
{
case MODE_STRING:
case MODE_SET:
case MODE_TYPE:
+ case MODE_SYSBYTE:
return true;
break;
default:
oberon_object_t * field = type -> decl;
for(int i = 0; i < num_fields; i++)
{
- oberon_initialize_object(ctx, field);
+ //oberon_initialize_object(ctx, field);
+ oberon_initialize_type(ctx, field -> type);
field = field -> next;
- }
+ }
oberon_generator_init_type(ctx, type);
}
@@ -4151,7 +4161,8 @@ oberon_make_ash_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
{
int64_t x = arg1 -> item.integer;
int64_t y = arg2 -> item.integer;
- expr = oberon_make_integer(ctx, x * powl(2, y));
+ int64_t v = x * powl(2, y);
+ expr = oberon_make_integer(ctx, v);
}
else
{
@@ -4161,6 +4172,67 @@ oberon_make_ash_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
return expr;
}
+static oberon_expr_t *
+oberon_make_lsh_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 2)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 2)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg1;
+ arg1 = list_args;
+ oberon_check_src(ctx, arg1);
+
+ oberon_type_t * t = arg1 -> result;
+ if(!oberon_is_integer_type(t)
+ && !oberon_is_char_type(t)
+ && !oberon_is_system_byte_type(t))
+ {
+ oberon_error(ctx, "expected integer, char, or SYSTEM.BYTE");
+ }
+
+ oberon_expr_t * arg2;
+ arg2 = list_args -> next;
+ oberon_check_src(ctx, arg2);
+ if(arg2 -> result -> class != OBERON_TYPE_INTEGER)
+ {
+ oberon_error(ctx, "expected integer");
+ }
+
+ oberon_expr_t * expr;
+ if(oberon_is_const(arg1) && oberon_is_const(arg2))
+ {
+ uint64_t x = arg1 -> item.integer;
+ int64_t y = arg2 -> item.integer;
+ uint64_t v = (y > 0) ? (x << y) : (x >> labs(y));
+ if(oberon_is_integer_type(t))
+ {
+ expr = oberon_make_integer(ctx, v);
+ }
+ else if(oberon_is_char_type(t))
+ {
+ expr = oberon_make_char(ctx, v);
+ }
+ else
+ {
+ expr = oberon_make_system_byte(ctx, v);
+ }
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_LSH, arg1 -> result, arg1, arg2);
+ expr = oberon_cast_expr(ctx, expr, t);
+ }
+
+ return expr;
+}
+
static oberon_expr_t *
oberon_make_cap_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
oberon_generator_init_type(ctx, ctx -> string_type);
ctx -> bool_type = oberon_new_type_boolean();
- oberon_define_type(ctx -> world_scope, "BOOLEAN", ctx -> bool_type, 1);
+ oberon_generator_init_type(ctx, ctx -> bool_type);
ctx -> char_type = oberon_new_type_char(1);
- oberon_define_type(ctx -> world_scope, "CHAR", ctx -> char_type, 1);
+ oberon_generator_init_type(ctx, ctx -> char_type);
ctx -> byte_type = oberon_new_type_integer(1);
- oberon_define_type(ctx -> world_scope, "SHORTINT", ctx -> byte_type, 1);
+ oberon_generator_init_type(ctx, ctx -> byte_type);
ctx -> shortint_type = oberon_new_type_integer(2);
- oberon_define_type(ctx -> world_scope, "INTEGER", ctx -> shortint_type, 1);
+ oberon_generator_init_type(ctx, ctx -> shortint_type);
ctx -> int_type = oberon_new_type_integer(4);
- oberon_define_type(ctx -> world_scope, "LONGINT", ctx -> int_type, 1);
+ oberon_generator_init_type(ctx, ctx -> int_type);
ctx -> longint_type = oberon_new_type_integer(8);
- oberon_define_type(ctx -> world_scope, "HUGEINT", ctx -> longint_type, 1);
+ oberon_generator_init_type(ctx, ctx -> longint_type);
ctx -> real_type = oberon_new_type_real(4);
- oberon_define_type(ctx -> world_scope, "REAL", ctx -> real_type, 1);
+ oberon_generator_init_type(ctx, ctx -> real_type);
ctx -> longreal_type = oberon_new_type_real(8);
- oberon_define_type(ctx -> world_scope, "LONGREAL", ctx -> longreal_type, 1);
+ oberon_generator_init_type(ctx, ctx -> longreal_type);
ctx -> set_type = oberon_new_type_set(4);
- oberon_define_type(ctx -> world_scope, "SET", ctx -> set_type, 1);
+ oberon_generator_init_type(ctx, ctx -> set_type);
+ ctx -> system_byte_type = oberon_new_type_ptr(OBERON_TYPE_SYSTEM_BYTE);
+ oberon_generator_init_type(ctx, ctx -> system_byte_type);
+ ctx -> system_ptr_type = oberon_new_type_ptr(OBERON_TYPE_SYSTEM_PTR);
+ oberon_generator_init_type(ctx, ctx -> system_ptr_type);
+ /* LONG / SHORT support */
ctx -> byte_type -> shorter = NULL;
ctx -> byte_type -> longer = ctx -> shortint_type;
@@ -4520,10 +4597,46 @@ oberon_new_intrinsic(oberon_context_t * ctx, char * name, GenerateFuncCallback f
proc -> type -> genproc = p;
}
+static void oberon_new_intrinsic_type(oberon_context_t * ctx, char * name, oberon_type_t * type)
+{
+ oberon_object_t * id;
+ id = oberon_define_object(ctx -> decl, name, OBERON_CLASS_TYPE, true, false, false);
+ id -> type = type;
+}
+
+static void
+oberon_begin_intrinsic_module(oberon_context_t * ctx, char * name, oberon_module_t ** m)
+{
+ oberon_scope_t * module_scope;
+ module_scope = oberon_open_scope(ctx);
+
+ oberon_module_t * module;
+ module = GC_MALLOC(sizeof *module);
+ memset(module, 0, sizeof *module);
+ module -> name = name;
+ module -> intrinsic = true;
+ module -> decl = module_scope;
+ module -> next = ctx -> module_list;
+
+ ctx -> mod = module;
+ ctx -> module_list = module;
+
+ *m = module;
+}
+
+static void
+oberon_end_intrinsic_module(oberon_context_t * ctx, oberon_module_t * m)
+{
+ oberon_close_scope(m -> decl);
+ m -> ready = true;
+ ctx -> mod = NULL;
+}
+
oberon_context_t *
oberon_create_context(ModuleImportCallback import_module)
{
- oberon_context_t * ctx = calloc(1, sizeof *ctx);
+ oberon_context_t * ctx = GC_MALLOC(sizeof *ctx);
+ memset(ctx, 0, sizeof *ctx);
oberon_scope_t * world_scope;
world_scope = oberon_open_scope(ctx);
oberon_generator_init_context(ctx);
+ /* Types */
register_default_types(ctx);
/* Constants */
oberon_new_const(ctx, "TRUE", oberon_make_boolean(ctx, true));
oberon_new_const(ctx, "FALSE", oberon_make_boolean(ctx, false));
+ /* Types */
+ oberon_new_intrinsic_type(ctx, "BOOLEAN", ctx -> bool_type);
+ oberon_new_intrinsic_type(ctx, "CHAR", ctx -> char_type);
+ oberon_new_intrinsic_type(ctx, "SHORTINT", ctx -> byte_type);
+ oberon_new_intrinsic_type(ctx, "INTEGER", ctx -> shortint_type);
+ oberon_new_intrinsic_type(ctx, "LONGINT", ctx -> int_type);
+ oberon_new_intrinsic_type(ctx, "HUGEINT", ctx -> longint_type);
+ oberon_new_intrinsic_type(ctx, "REAL", ctx -> real_type);
+ oberon_new_intrinsic_type(ctx, "LONGREAL", ctx -> longreal_type);
+ oberon_new_intrinsic_type(ctx, "SET", ctx -> set_type);
+
/* Functions */
oberon_new_intrinsic(ctx, "ABS", oberon_make_abs_call, NULL);
oberon_new_intrinsic(ctx, "ASH", oberon_make_ash_call, NULL);
oberon_new_intrinsic(ctx, "INCL", NULL, oberon_make_incl_call);
oberon_new_intrinsic(ctx, "NEW", NULL, oberon_make_new_call);
+ /* MODULE SYSTEM */
+ oberon_begin_intrinsic_module(ctx, "SYSTEM", &ctx -> system_module);
+
+ /* Types */
+ oberon_new_intrinsic_type(ctx, "BYTE", ctx -> system_byte_type);
+ oberon_new_intrinsic_type(ctx, "PTR", ctx -> system_ptr_type);
+
+ /* Functions */
+ oberon_new_intrinsic(ctx, "LSH", oberon_make_lsh_call, NULL);
+
+ oberon_end_intrinsic_module(ctx, ctx -> system_module);
+
return ctx;
}
oberon_destroy_context(oberon_context_t * ctx)
{
oberon_generator_destroy_context(ctx);
- free(ctx);
}
oberon_module_t *
module_scope = oberon_open_scope(ctx);
oberon_module_t * module;
- module = calloc(1, sizeof *module);
+ module = GC_MALLOC(sizeof *module);
+ memset(module, 0, sizeof *module);
module -> decl = module_scope;
module -> next = ctx -> module_list;