diff --git a/src/oberon.c b/src/oberon.c
index 08543355c92b9e421854e751081df3e6827c8d17..29c40cb974b5a822bb89c18cfe567a2d464aa966 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)
{
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)
{
return expr;
}
+static oberon_expr_t *
+oberon_make_set_index(oberon_context_t * ctx, int64_t i)
+{
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_SET, ctx -> set_type, true);
+ expr -> item.integer = 1 << i;
+ expr -> item.real = 1 << i;
+ return expr;
+}
+
static oberon_expr_t *
oberon_make_set_range(oberon_context_t * ctx, int64_t x, int64_t y)
{
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;
@@ -316,16 +352,6 @@ 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);
}
@@ -1031,14 +1055,24 @@ 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;
}
+static oberon_expr_t *
+oberon_hard_cast_expr(oberon_context_t * ctx, oberon_expr_t * expr, oberon_type_t * pref)
+{
+ return oberon_new_operator(OP_HARDCAST, pref, expr, NULL);
+}
+
static void
oberon_check_dst(oberon_context_t * ctx, oberon_expr_t * dst)
{
{
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
{
assert(expr -> is_item);
oberon_expr_t * selector;
- selector = oberon_new_item(MODE_DEREF, expr -> result -> base, expr -> read_only);
+ selector = oberon_new_item(MODE_DEREF, expr -> result -> base, false);
selector -> item.parent = (oberon_item_t *) expr;
return selector;
oberon_expr_t * set;
if(e2 == NULL && oberon_is_const(e1))
{
- set = oberon_make_set(ctx, e1 -> item.integer);
+ set = oberon_make_set_index(ctx, e1 -> item.integer);
}
else if(e2 != NULL && oberon_is_const(e1) && oberon_is_const(e2))
{
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:
@@ -1681,7 +1714,7 @@ 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)
{
@@ -1706,7 +1739,22 @@ 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)))
expr = oberon_term_expr(ctx);
- if(minus)
- {
- expr = oberon_make_unary_op(ctx, MINUS, expr);
- }
-
while(ISADDOP(ctx -> token))
{
int token = ctx -> token;
expr = oberon_make_bin_op(ctx, token, expr, inter);
}
+ if(minus)
+ {
+ expr = oberon_make_unary_op(ctx, MINUS, expr);
+ }
+
return expr;
}
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);
}
oberon_expr_t * cond2;
e1 = (oberon_expr_t *) oberon_const_expr(ctx);
-
+
e2 = NULL;
if(ctx -> token == DOTDOT)
{
// LIBRARY
// =======================================================================
-static void
-register_default_types(oberon_context_t * ctx)
-{
- ctx -> notype_type = oberon_new_type_ptr(OBERON_TYPE_NOTYPE);
- oberon_generator_init_type(ctx, ctx -> notype_type);
-
- ctx -> nil_type = oberon_new_type_ptr(OBERON_TYPE_NIL);
- oberon_generator_init_type(ctx, ctx -> nil_type);
-
- ctx -> string_type = oberon_new_type_string(1);
- 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);
-
- ctx -> char_type = oberon_new_type_char(1);
- oberon_define_type(ctx -> world_scope, "CHAR", ctx -> char_type, 1);
-
- ctx -> byte_type = oberon_new_type_integer(1);
- oberon_define_type(ctx -> world_scope, "SHORTINT", ctx -> byte_type, 1);
-
- ctx -> shortint_type = oberon_new_type_integer(2);
- oberon_define_type(ctx -> world_scope, "INTEGER", ctx -> shortint_type, 1);
-
- ctx -> int_type = oberon_new_type_integer(4);
- oberon_define_type(ctx -> world_scope, "LONGINT", ctx -> int_type, 1);
-
- ctx -> longint_type = oberon_new_type_integer(8);
- oberon_define_type(ctx -> world_scope, "HUGEINT", ctx -> longint_type, 1);
-
- ctx -> real_type = oberon_new_type_real(4);
- oberon_define_type(ctx -> world_scope, "REAL", ctx -> real_type, 1);
-
- ctx -> longreal_type = oberon_new_type_real(8);
- oberon_define_type(ctx -> world_scope, "LONGREAL", ctx -> longreal_type, 1);
-
- ctx -> set_type = oberon_new_type_set(4);
- oberon_define_type(ctx -> world_scope, "SET", ctx -> set_type, 1);
-}
-
-static void
-oberon_new_intrinsic(oberon_context_t * ctx, char * name, GenerateFuncCallback f, GenerateProcCallback p)
-{
- oberon_object_t * proc;
- proc = oberon_define_object(ctx -> decl, name, OBERON_CLASS_PROC, true, false, false);
- proc -> type = oberon_new_type_ptr(OBERON_TYPE_PROCEDURE);
- proc -> type -> sysproc = true;
- proc -> type -> genfunc = f;
- proc -> type -> genproc = p;
-}
-
static oberon_expr_t *
oberon_make_min_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
@@ -3845,6 +3844,132 @@ oberon_make_abs_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
return expr;
}
+static void
+oberon_make_inc_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * dst;
+ dst = list_args;
+ oberon_check_dst(ctx, dst);
+
+ if(!oberon_is_integer_type(dst -> result))
+ {
+ oberon_error(ctx, "expect integer");
+ }
+
+ oberon_expr_t * expr;
+ expr = oberon_make_bin_op(ctx, PLUS, dst, oberon_make_integer(ctx, 1));
+ oberon_assign(ctx, expr, dst);
+}
+
+static void
+oberon_make_incl_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 * dst;
+ dst = list_args;
+ oberon_check_dst(ctx, dst);
+
+ if(!oberon_is_set_type(dst -> result))
+ {
+ oberon_error(ctx, "expect integer");
+ }
+
+ oberon_expr_t * x;
+ x = list_args -> next;
+ oberon_check_src(ctx, x);
+
+ if(!oberon_is_integer_type(x -> result))
+ {
+ oberon_error(ctx, "expect integer");
+ }
+
+ oberon_expr_t * expr;
+ expr = oberon_make_bin_op(ctx, PLUS, dst, oberon_new_operator(OP_RANGE, dst -> result, x, NULL));
+ oberon_assign(ctx, expr, dst);
+}
+
+static void
+oberon_make_excl_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 * dst;
+ dst = list_args;
+ oberon_check_dst(ctx, dst);
+
+ if(!oberon_is_set_type(dst -> result))
+ {
+ oberon_error(ctx, "expect integer");
+ }
+
+ oberon_expr_t * x;
+ x = list_args -> next;
+ oberon_check_src(ctx, x);
+
+ if(!oberon_is_integer_type(x -> result))
+ {
+ oberon_error(ctx, "expect integer");
+ }
+
+ oberon_expr_t * expr;
+ expr = oberon_make_bin_op(ctx, MINUS, dst, oberon_new_operator(OP_RANGE, dst -> result, x, NULL));
+ oberon_assign(ctx, expr, dst);
+}
+
+static void
+oberon_make_dec_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * dst;
+ dst = list_args;
+ oberon_check_dst(ctx, dst);
+
+ if(!oberon_is_integer_type(dst -> result))
+ {
+ oberon_error(ctx, "expect integer");
+ }
+
+ oberon_expr_t * expr;
+ expr = oberon_make_bin_op(ctx, MINUS, dst, oberon_make_integer(ctx, 1));
+ oberon_assign(ctx, expr, dst);
+}
+
static void
oberon_make_new_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
@@ -4066,7 +4191,8 @@ 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 = (y > 0) ? (x << y) : (x >> labs(y));
+ expr = oberon_make_integer(ctx, v);
}
else
{
@@ -4077,68 +4203,479 @@ oberon_make_ash_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
}
static oberon_expr_t *
-oberon_make_cap_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+oberon_make_lsh_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
- if(num_args < 1)
+ if(num_args < 2)
{
oberon_error(ctx, "too few arguments");
}
- if(num_args > 1)
+ if(num_args > 2)
{
oberon_error(ctx, "too mach arguments");
}
- oberon_expr_t * arg;
- arg = list_args;
- oberon_check_src(ctx, arg);
+ oberon_expr_t * arg1;
+ arg1 = list_args;
+ oberon_check_src(ctx, arg1);
- if(!oberon_is_char_type(arg -> result))
+ 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 char");
+ 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(arg))
+ if(oberon_is_const(arg1) && oberon_is_const(arg2))
{
- expr = oberon_make_char(ctx, toupper(arg -> item.integer));
+ 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_CAP, arg -> result, arg, NULL);
+ 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_odd_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+oberon_make_rot_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
- if(num_args < 1)
+ if(num_args < 2)
{
oberon_error(ctx, "too few arguments");
}
- if(num_args > 1)
+ if(num_args > 2)
{
oberon_error(ctx, "too mach arguments");
}
- oberon_expr_t * arg;
- arg = list_args;
- oberon_check_src(ctx, arg);
+ oberon_expr_t * arg1;
+ arg1 = list_args;
+ oberon_check_src(ctx, arg1);
- if(!oberon_is_integer_type(arg -> result))
+ 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");
+ oberon_error(ctx, "expected integer, char, or SYSTEM.BYTE");
}
- oberon_expr_t * expr;
- expr = oberon_make_bin_op(ctx, MOD, arg, oberon_make_integer(ctx, 2));
+ 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 = 0;
+ if(y > 0)
+ {
+ v = (x << y) | (x >> (64 - y));
+ }
+ else
+ {
+ y = labs(y);
+ v = (x >> y) | (x << (64 - 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_ROT, 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)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+
+ if(!oberon_is_char_type(arg -> result))
+ {
+ oberon_error(ctx, "expected char");
+ }
+
+ oberon_expr_t * expr;
+ if(oberon_is_const(arg))
+ {
+ expr = oberon_make_char(ctx, toupper(arg -> item.integer));
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_CAP, arg -> result, arg, NULL);
+ }
+
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_chr_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+
+ if(!oberon_is_integer_type(arg -> result))
+ {
+ oberon_error(ctx, "expected integer");
+ }
+
+ oberon_expr_t * expr;
+ if(oberon_is_const(arg))
+ {
+ expr = oberon_make_char(ctx, arg -> item.integer);
+ }
+ else
+ {
+ expr = oberon_cast_expr(ctx, arg, ctx -> char_type);
+ }
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_ord_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+
+ if(!oberon_is_char_type(arg -> result) && !oberon_is_string_of_one(arg))
+ {
+ oberon_error(ctx, "expected char");
+ }
+
+ oberon_expr_t * expr;
+ if(oberon_is_const(arg))
+ {
+ expr = oberon_make_integer(ctx, arg -> item.integer);
+ }
+ else
+ {
+ expr = oberon_cast_expr(ctx, arg, ctx -> int_type);
+ }
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_entier_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+
+ if(!oberon_is_real_type(arg -> result))
+ {
+ oberon_error(ctx, "expected real");
+ }
+
+ oberon_expr_t * expr;
+ if(oberon_is_const(arg))
+ {
+ expr = oberon_make_integer(ctx, floor(arg -> item.real));
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_ENTIER, ctx -> int_type, arg, NULL);
+ }
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_odd_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+
+ if(!oberon_is_integer_type(arg -> result))
+ {
+ oberon_error(ctx, "expected integer");
+ }
+
+ oberon_expr_t * expr;
+ expr = oberon_make_bin_op(ctx, MOD, arg, oberon_make_integer(ctx, 2));
expr = oberon_make_bin_op(ctx, EQUAL, expr, oberon_make_integer(ctx, 1));
return expr;
}
+static oberon_expr_t *
+oberon_make_cc_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+ oberon_check_const(ctx, arg);
+
+ if(!oberon_is_integer_type(arg -> result))
+ {
+ oberon_error(ctx, "expected integer");
+ }
+
+ /* n >= 0 && n <= 15 */
+
+ oberon_expr_t * cond1;
+ oberon_expr_t * cond2;
+ cond1 = oberon_make_bin_op(ctx, GEQ, arg, oberon_make_integer(ctx, 0));
+ cond2 = oberon_make_bin_op(ctx, LEQ, arg, oberon_make_integer(ctx, 15));
+ return oberon_make_bin_op(ctx, AND, cond1, cond2);
+}
+
+static oberon_expr_t *
+oberon_make_short_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+
+ if(arg -> result -> shorter == NULL)
+ {
+ oberon_error(ctx, "already shorter");
+ }
+
+ oberon_expr_t * expr;
+ expr = oberon_cast_expr(ctx, arg, arg -> result -> shorter);
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_long_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 1)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args;
+ oberon_check_src(ctx, arg);
+
+ if(arg -> result -> longer == NULL)
+ {
+ oberon_error(ctx, "already longer");
+ }
+
+ oberon_expr_t * expr;
+ expr = oberon_cast_expr(ctx, arg, arg -> result -> longer);
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_val_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 * typ;
+ typ = list_args;
+ if(!oberon_is_type_expr(typ))
+ {
+ oberon_error(ctx, "requires type");
+ }
+
+ oberon_expr_t * arg;
+ arg = list_args -> next;
+ oberon_check_src(ctx, arg);
+
+ oberon_expr_t * expr;
+ expr = oberon_hard_cast_expr(ctx, arg, typ -> result);
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_len_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
+{
+ if(num_args < 1)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
+
+ if(num_args > 2)
+ {
+ oberon_error(ctx, "too mach arguments");
+ }
+
+ oberon_expr_t * v;
+ v = list_args;
+ oberon_check_src(ctx, v);
+
+ if(!oberon_is_array_type(v -> result))
+ {
+ oberon_error(ctx, "expected array");
+ }
+
+ int n = 0;
+ if(num_args == 2)
+ {
+ oberon_expr_t * num;
+ num = list_args -> next;
+ oberon_check_src(ctx, num);
+
+ if(!oberon_is_integer_type(num -> result))
+ {
+ oberon_error(ctx, "expected integer");
+ }
+ oberon_check_const(ctx, num);
+
+ n = num -> item.integer;
+ }
+
+ int dim = 0;
+ oberon_type_t * arr = v -> result;
+ while(arr -> class == OBERON_TYPE_ARRAY)
+ {
+ dim += 1;
+ arr = arr -> base;
+ }
+
+ if(n < 0 || n > dim)
+ {
+ oberon_error(ctx, "not in range 0..%i", dim - 1);
+ }
+
+ assert(v -> is_item);
+
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_LEN, ctx -> int_type, true);
+ expr -> item.parent = (oberon_item_t *) v;
+ expr -> item.integer = n;
+ return expr;
+}
+
static void
oberon_new_const(oberon_context_t * ctx, char * name, oberon_expr_t * expr)
{
@@ -4148,10 +4685,122 @@ oberon_new_const(oberon_context_t * ctx, char * name, oberon_expr_t * expr)
constant -> value = (oberon_item_t *) expr;
}
+static void
+register_default_types(oberon_context_t * ctx)
+{
+ ctx -> notype_type = oberon_new_type_ptr(OBERON_TYPE_NOTYPE);
+ oberon_generator_init_type(ctx, ctx -> notype_type);
+
+ ctx -> nil_type = oberon_new_type_ptr(OBERON_TYPE_NIL);
+ oberon_generator_init_type(ctx, ctx -> nil_type);
+
+ ctx -> string_type = oberon_new_type_string(1);
+ oberon_generator_init_type(ctx, ctx -> string_type);
+
+ ctx -> bool_type = oberon_new_type_boolean();
+ oberon_generator_init_type(ctx, ctx -> bool_type);
+
+ ctx -> char_type = oberon_new_type_char(1);
+ oberon_generator_init_type(ctx, ctx -> char_type);
+
+ ctx -> byte_type = oberon_new_type_integer(1);
+ oberon_generator_init_type(ctx, ctx -> byte_type);
+
+ ctx -> shortint_type = oberon_new_type_integer(2);
+ oberon_generator_init_type(ctx, ctx -> shortint_type);
+
+ ctx -> int_type = oberon_new_type_integer(4);
+ oberon_generator_init_type(ctx, ctx -> int_type);
+
+ ctx -> longint_type = oberon_new_type_integer(8);
+ oberon_generator_init_type(ctx, ctx -> longint_type);
+
+ ctx -> real_type = oberon_new_type_real(4);
+ oberon_generator_init_type(ctx, ctx -> real_type);
+
+ ctx -> longreal_type = oberon_new_type_real(8);
+ oberon_generator_init_type(ctx, ctx -> longreal_type);
+
+ ctx -> set_type = oberon_new_type_set(4);
+ 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;
+
+ ctx -> shortint_type -> shorter = ctx -> byte_type;
+ ctx -> shortint_type -> longer = ctx -> int_type;
+
+ ctx -> int_type -> shorter = ctx -> shortint_type;
+ ctx -> int_type -> longer = ctx -> longint_type;
+
+ ctx -> longint_type -> shorter = ctx -> int_type;
+ ctx -> longint_type -> longer = NULL;
+
+ ctx -> real_type -> shorter = NULL;
+ ctx -> real_type -> longer = ctx -> longreal_type;
+
+ ctx -> longreal_type -> shorter = ctx -> real_type;
+ ctx -> longreal_type -> longer = NULL;
+}
+
+static void
+oberon_new_intrinsic(oberon_context_t * ctx, char * name, GenerateFuncCallback f, GenerateProcCallback p)
+{
+ oberon_object_t * proc;
+ proc = oberon_define_object(ctx -> decl, name, OBERON_CLASS_PROC, true, false, false);
+ proc -> type = oberon_new_type_ptr(OBERON_TYPE_PROCEDURE);
+ proc -> type -> sysproc = true;
+ proc -> type -> genfunc = 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, "CAP", oberon_make_cap_call, NULL);
- oberon_new_intrinsic(ctx, "MIN", oberon_make_min_call, NULL);
+ oberon_new_intrinsic(ctx, "CHR", oberon_make_chr_call, NULL);
+ oberon_new_intrinsic(ctx, "ENTIER", oberon_make_entier_call, NULL);
+ oberon_new_intrinsic(ctx, "LEN", oberon_make_len_call, NULL);
+ oberon_new_intrinsic(ctx, "LONG", oberon_make_long_call, NULL);
oberon_new_intrinsic(ctx, "MAX", oberon_make_max_call, NULL);
+ oberon_new_intrinsic(ctx, "MIN", oberon_make_min_call, NULL);
oberon_new_intrinsic(ctx, "ODD", oberon_make_odd_call, NULL);
+ oberon_new_intrinsic(ctx, "ORD", oberon_make_ord_call, NULL);
+ oberon_new_intrinsic(ctx, "SHORT", oberon_make_short_call, NULL);
oberon_new_intrinsic(ctx, "SIZE", oberon_make_size_call, NULL);
/* Procedures */
- oberon_new_intrinsic(ctx, "NEW", NULL, oberon_make_new_call);
- oberon_new_intrinsic(ctx, "COPY", NULL, oberon_make_copy_call);
oberon_new_intrinsic(ctx, "ASSERT", NULL, oberon_make_assert_call);
+ oberon_new_intrinsic(ctx, "COPY", NULL, oberon_make_copy_call);
+ oberon_new_intrinsic(ctx, "DEC", NULL, oberon_make_dec_call);
+ oberon_new_intrinsic(ctx, "EXCL", NULL, oberon_make_excl_call);
oberon_new_intrinsic(ctx, "HALT", NULL, oberon_make_halt_call);
+ oberon_new_intrinsic(ctx, "INC", NULL, oberon_make_inc_call);
+ 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, "CC", oberon_make_cc_call, NULL);
+ oberon_new_intrinsic(ctx, "LSH", oberon_make_lsh_call, NULL);
+ oberon_new_intrinsic(ctx, "ROT", oberon_make_rot_call, NULL);
+ oberon_new_intrinsic(ctx, "VAL", oberon_make_val_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;