diff --git a/src/oberon.c b/src/oberon.c
index 6cc5d1d193787867c68e74c0aec302d40a6022e0..a2a567036598a90f005bcc1780531e18e6d54701 100644 (file)
--- a/src/oberon.c
+++ b/src/oberon.c
#include <string.h>
#include <assert.h>
#include <stdbool.h>
+#include <math.h>
#include "../include/oberon.h"
NIL,
IMPORT,
REAL,
- CHAR
+ CHAR,
+ STRING,
+ IF,
+ THEN,
+ ELSE,
+ ELSIF,
+ WHILE,
+ DO,
+ REPEAT,
+ UNTIL,
+ FOR,
+ BY,
+ LOOP,
+ EXIT
};
// =======================================================================
return x;
}
+static oberon_type_t *
+oberon_new_type_string(int size)
+{
+ oberon_type_t * x;
+ x = oberon_new_type_ptr(OBERON_TYPE_STRING);
+ x -> size = size;
+ return x;
+}
+
// =======================================================================
// TABLE
// =======================================================================
scope -> local = scope -> up -> local;
scope -> parent = scope -> up -> parent;
scope -> parent_type = scope -> up -> parent_type;
+ scope -> exit_label = scope -> up -> exit_label;
}
ctx -> decl = scope;
return result;
}
+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);
+ memset(newvar, 0, sizeof *newvar);
+ newvar -> name = name;
+ newvar -> class = class;
+ newvar -> export = export;
+ newvar -> read_only = read_only;
+ newvar -> local = scope -> local;
+ newvar -> parent = scope -> parent;
+ newvar -> parent_type = scope -> parent_type;
+ newvar -> module = scope -> ctx -> mod;
+ return newvar;
+}
+
static oberon_object_t *
oberon_define_object(oberon_scope_t * scope, char * name, int class, bool export, bool read_only, bool check_upscope)
{
@@ -211,17 +251,8 @@ oberon_define_object(oberon_scope_t * scope, char * name, int class, bool export
oberon_error(scope -> ctx, "already defined");
}
- oberon_object_t * newvar = malloc(sizeof *newvar);
- memset(newvar, 0, sizeof *newvar);
- newvar -> name = name;
- newvar -> class = class;
- newvar -> export = export;
- newvar -> read_only = read_only;
- newvar -> local = scope -> local;
- newvar -> parent = scope -> parent;
- newvar -> parent_type = scope -> parent_type;
- newvar -> module = scope -> ctx -> mod;
-
+ oberon_object_t * newvar;
+ newvar = oberon_create_object(scope, name, class, export, read_only);
x -> next = newvar;
return newvar;
{
ctx -> token = IS;
}
+ else if(strcmp(ident, "IF") == 0)
+ {
+ ctx -> token = IF;
+ }
+ else if(strcmp(ident, "THEN") == 0)
+ {
+ ctx -> token = THEN;
+ }
+ else if(strcmp(ident, "ELSE") == 0)
+ {
+ ctx -> token = ELSE;
+ }
+ else if(strcmp(ident, "ELSIF") == 0)
+ {
+ ctx -> token = ELSIF;
+ }
+ else if(strcmp(ident, "WHILE") == 0)
+ {
+ ctx -> token = WHILE;
+ }
+ else if(strcmp(ident, "DO") == 0)
+ {
+ ctx -> token = DO;
+ }
+ else if(strcmp(ident, "REPEAT") == 0)
+ {
+ ctx -> token = REPEAT;
+ }
+ else if(strcmp(ident, "UNTIL") == 0)
+ {
+ ctx -> token = UNTIL;
+ }
+ else if(strcmp(ident, "FOR") == 0)
+ {
+ ctx -> token = FOR;
+ }
+ else if(strcmp(ident, "BY") == 0)
+ {
+ ctx -> token = BY;
+ }
+ else if(strcmp(ident, "LOOP") == 0)
+ {
+ ctx -> token = LOOP;
+ }
+ else if(strcmp(ident, "EXIT") == 0)
+ {
+ ctx -> token = EXIT;
+ }
}
static void
}
}
+static void oberon_read_string(oberon_context_t * ctx)
+{
+ int c = ctx -> c;
+ oberon_get_char(ctx);
+
+ int start = ctx -> code_index;
+
+ while(ctx -> c != 0 && ctx -> c != c)
+ {
+ oberon_get_char(ctx);
+ }
+
+ if(ctx -> c == 0)
+ {
+ oberon_error(ctx, "unterminated string");
+ }
+
+ int end = ctx -> code_index;
+
+ oberon_get_char(ctx);
+
+ char * string = calloc(1, end - start + 1);
+ strncpy(string, &ctx -> code[start], end - start);
+
+ ctx -> token = STRING;
+ ctx -> string = string;
+
+ printf("oberon_read_string: string ((%s))\n", string);
+}
+
static void oberon_read_token(oberon_context_t * ctx);
static void
ctx -> token = UPARROW;
oberon_get_char(ctx);
break;
+ case '"':
+ oberon_read_string(ctx);
+ break;
+ case '\'':
+ oberon_read_string(ctx);
+ break;
default:
oberon_error(ctx, "invalid char %c", ctx -> c);
break;
@@ -897,17 +1012,73 @@ oberon_check_record_compatibility(oberon_context_t * ctx, oberon_type_t * from,
}
}
+static void
+oberon_check_dst(oberon_context_t * ctx, oberon_expr_t * dst)
+{
+ if(dst -> is_item == false)
+ {
+ oberon_error(ctx, "not variable");
+ }
+
+ switch(dst -> item.mode)
+ {
+ case MODE_VAR:
+ case MODE_CALL:
+ case MODE_INDEX:
+ case MODE_FIELD:
+ case MODE_DEREF:
+ case MODE_NEW:
+ /* accept */
+ break;
+ default:
+ oberon_error(ctx, "not variable");
+ break;
+ }
+}
+
+static void
+oberon_check_src(oberon_context_t * ctx, oberon_expr_t * src)
+{
+ if(src -> is_item)
+ {
+ if(src -> item.mode == MODE_TYPE)
+ {
+ oberon_error(ctx, "not variable");
+ }
+ }
+}
+
static oberon_expr_t *
oberon_autocast_to(oberon_context_t * ctx, oberon_expr_t * expr, oberon_type_t * pref)
{
// Допускается:
// Если классы типов равны
// Если INTEGER переводится в REAL
+ // Есди STRING переводится в ARRAY OF CHAR
+
+ oberon_check_src(ctx, expr);
bool error = false;
if(pref -> class != expr -> result -> class)
{
- if(expr -> result -> class == OBERON_TYPE_INTEGER)
+ printf("expr class %i\n", expr -> result -> class);
+ printf("pref class %i\n", pref -> class);
+
+ if(expr -> result -> class == OBERON_TYPE_STRING)
+ {
+ if(pref -> class == OBERON_TYPE_ARRAY)
+ {
+ if(pref -> base -> class != OBERON_TYPE_CHAR)
+ {
+ error = true;
+ }
+ }
+ else
+ {
+ error = true;
+ }
+ }
+ else if(expr -> result -> class == OBERON_TYPE_INTEGER)
{
if(pref -> class != OBERON_TYPE_REAL)
{
@@ -922,7 +1093,7 @@ oberon_autocast_to(oberon_context_t * ctx, oberon_expr_t * expr, oberon_type_t *
if(error)
{
- oberon_error(ctx, "incompatible types");
+ oberon_error(ctx, "oberon_autocast_to: incompatible types");
}
if(pref -> class == OBERON_TYPE_INTEGER || pref -> class == OBERON_TYPE_REAL)
@@ -939,6 +1110,7 @@ oberon_autocast_to(oberon_context_t * ctx, oberon_expr_t * expr, oberon_type_t *
else if(pref -> class == OBERON_TYPE_RECORD)
{
oberon_check_record_compatibility(ctx, expr -> result, pref);
+ expr = oberno_make_record_cast(ctx, expr, pref);
}
else if(pref -> class == OBERON_TYPE_POINTER)
{
@@ -1095,58 +1267,6 @@ oberon_make_call_proc(oberon_context_t * ctx, oberon_item_t * item, int num_args
}
}
-/*
-static void
-oberon_make_call_proc(oberon_context_t * ctx, oberon_object_t * proc, int num_args, oberon_expr_t * list_args)
-{
- switch(proc -> class)
- {
- case OBERON_CLASS_PROC:
- if(proc -> class != OBERON_CLASS_PROC)
- {
- oberon_error(ctx, "not a procedure");
- }
- break;
- case OBERON_CLASS_VAR:
- case OBERON_CLASS_VAR_PARAM:
- case OBERON_CLASS_PARAM:
- if(proc -> type -> class != OBERON_TYPE_PROCEDURE)
- {
- oberon_error(ctx, "not a procedure");
- }
- break;
- default:
- oberon_error(ctx, "not a procedure");
- break;
- }
-
- if(proc -> sysproc)
- {
- if(proc -> genproc == NULL)
- {
- oberon_error(ctx, "requres non-typed procedure");
- }
-
- proc -> genproc(ctx, num_args, list_args);
- }
- else
- {
- if(proc -> type -> base -> class != OBERON_TYPE_VOID)
- {
- oberon_error(ctx, "attempt to call function as non-typed procedure");
- }
-
- oberon_expr_t * call;
- call = oberon_new_item(MODE_CALL, proc -> type -> base, 1);
- call -> item.var = proc;
- call -> item.num_args = num_args;
- call -> item.args = list_args;
- oberon_autocast_call(ctx, call);
- oberon_generate_call_proc(ctx, call);
- }
-}
-*/
-
#define ISEXPR(x) \
(((x) == PLUS) \
|| ((x) == MINUS) \
@@ -1154,6 +1274,7 @@ oberon_make_call_proc(oberon_context_t * ctx, oberon_object_t * proc, int num_ar
|| ((x) == INTEGER) \
|| ((x) == REAL) \
|| ((x) == CHAR) \
+ || ((x) == STRING) \
|| ((x) == NIL) \
|| ((x) == LPAREN) \
|| ((x) == NOT) \
return x;
}
+static oberon_expr_t *
+oberon_ident_item(oberon_context_t * ctx, char * name)
+{
+ bool read_only;
+ oberon_object_t * x;
+ oberon_expr_t * expr;
+
+ x = oberon_find_object(ctx -> decl, name, true);
+
+ read_only = false;
+ if(x -> class == OBERON_CLASS_CONST || x -> class == OBERON_CLASS_PROC)
+ {
+ read_only = true;
+ }
+
+ expr = oberon_new_item(MODE_VAR, x -> type, read_only);
+ expr -> item.var = x;
+ return expr;
+}
+
static oberon_expr_t *
oberon_designator(oberon_context_t * ctx)
{
// TODO copy value
expr = (oberon_expr_t *) var -> value;
break;
+ case OBERON_CLASS_TYPE:
+ expr = oberon_new_item(MODE_TYPE, var -> type, read_only);
+ break;
case OBERON_CLASS_VAR:
case OBERON_CLASS_VAR_PARAM:
case OBERON_CLASS_PARAM:
expr = oberon_new_item(MODE_VAR, var -> type, read_only);
break;
case OBERON_CLASS_PROC:
- expr = oberon_new_item(MODE_VAR, var -> type, 1);
+ expr = oberon_new_item(MODE_VAR, var -> type, true);
break;
default:
oberon_error(ctx, "invalid designator");
}
}
+static oberon_expr_t *
+oberon_integer_item(oberon_context_t * ctx, int64_t i)
+{
+ oberon_expr_t * expr;
+ oberon_type_t * result;
+ result = oberon_get_type_of_int_value(ctx, i);
+ expr = oberon_new_item(MODE_INTEGER, result, true);
+ expr -> item.integer = i;
+ return expr;
+}
+
static oberon_expr_t *
oberon_factor(oberon_context_t * ctx)
{
expr = oberon_opt_func_parens(ctx, expr);
break;
case INTEGER:
- result = oberon_get_type_of_int_value(ctx, ctx -> integer);
- expr = oberon_new_item(MODE_INTEGER, result, 1);
- expr -> item.integer = ctx -> integer;
+ expr = oberon_integer_item(ctx, ctx -> integer);
oberon_assert_token(ctx, INTEGER);
break;
case CHAR:
result = ctx -> char_type;
- expr = oberon_new_item(MODE_CHAR, result, 1);
+ expr = oberon_new_item(MODE_CHAR, result, true);
expr -> item.integer = ctx -> integer;
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;
+ oberon_assert_token(ctx, STRING);
+ break;
case REAL:
result = (ctx -> longmode) ? (ctx -> longreal_type) : (ctx -> real_type);
expr = oberon_new_item(MODE_REAL, result, 1);
oberon_assert_token(ctx, REAL);
break;
case TRUE:
- expr = oberon_new_item(MODE_BOOLEAN, ctx -> bool_type, 1);
+ expr = oberon_new_item(MODE_BOOLEAN, ctx -> bool_type, true);
expr -> item.boolean = true;
oberon_assert_token(ctx, TRUE);
break;
case FALSE:
- expr = oberon_new_item(MODE_BOOLEAN, ctx -> bool_type, 1);
+ expr = oberon_new_item(MODE_BOOLEAN, ctx -> bool_type, true);
expr -> item.boolean = false;
oberon_assert_token(ctx, FALSE);
break;
break;
case NIL:
oberon_assert_token(ctx, NIL);
- expr = oberon_new_item(MODE_NIL, ctx -> void_ptr_type, 1);
+ expr = oberon_new_item(MODE_NIL, ctx -> void_ptr_type, true);
break;
default:
oberon_error(ctx, "invalid expression");
@@ -1569,6 +1728,10 @@ oberon_make_bin_op(oberon_context_t * ctx, int token, oberon_expr_t * a, oberon_
|| b -> result -> class == OBERON_TYPE_INTEGER
|| a -> result -> class == OBERON_TYPE_REAL
|| b -> result -> class == OBERON_TYPE_REAL)
+ {
+ // accept
+ }
+ else
{
oberon_error(ctx, "used only with numeric types");
}
oberon_error(ctx, "const expression are required");
}
+ switch(expr -> item.mode)
+ {
+ case MODE_INTEGER:
+ case MODE_BOOLEAN:
+ case MODE_NIL:
+ case MODE_REAL:
+ case MODE_CHAR:
+ case MODE_STRING:
+ case MODE_TYPE:
+ /* accept */
+ break;
+ default:
+ oberon_error(ctx, "const expression are required");
+ break;
+ }
+
return (oberon_item_t *) expr;
}
oberon_prevent_undeclarated_procedures(ctx);
}
+static oberon_expr_t *
+oberon_make_temp_var_item(oberon_context_t * ctx, oberon_type_t * type)
+{
+ oberon_object_t * x;
+ oberon_expr_t * expr;
+
+ x = oberon_create_object(ctx -> decl, "TEMP", OBERON_CLASS_VAR, false, false);
+ x -> local = true;
+ x -> type = type;
+ oberon_generator_init_temp_var(ctx, x);
+
+ expr = oberon_new_item(MODE_VAR, type, false);
+ expr -> item.var = x;
+ return expr;
+}
+
+static void
+oberon_statement_seq(oberon_context_t * ctx);
+
static void
oberon_assign(oberon_context_t * ctx, oberon_expr_t * src, oberon_expr_t * dst)
{
@@ -2781,6 +2979,7 @@ oberon_assign(oberon_context_t * ctx, oberon_expr_t * src, oberon_expr_t * dst)
oberon_error(ctx, "read-only destination");
}
+ oberon_check_dst(ctx, dst);
src = oberon_autocast_to(ctx, src, dst -> result);
oberon_generate_assign(ctx, src, dst);
}
oberon_opt_proc_parens(ctx, item1);
}
}
+ else if(ctx -> token == IF)
+ {
+ gen_label_t * end;
+ gen_label_t * els;
+ oberon_expr_t * cond;
+
+ els = oberon_generator_reserve_label(ctx);
+ end = oberon_generator_reserve_label(ctx);
+
+ oberon_assert_token(ctx, IF);
+ cond = oberon_expr(ctx);
+ if(cond -> result -> class != OBERON_TYPE_BOOLEAN)
+ {
+ oberon_error(ctx, "condition must be boolean");
+ }
+ oberon_assert_token(ctx, THEN);
+ oberon_generate_branch(ctx, cond, false, els);
+ oberon_statement_seq(ctx);
+ oberon_generate_goto(ctx, end);
+ oberon_generate_label(ctx, els);
+
+ while(ctx -> token == ELSIF)
+ {
+ els = oberon_generator_reserve_label(ctx);
+
+ oberon_assert_token(ctx, ELSIF);
+ cond = oberon_expr(ctx);
+ if(cond -> result -> class != OBERON_TYPE_BOOLEAN)
+ {
+ oberon_error(ctx, "condition must be boolean");
+ }
+ oberon_assert_token(ctx, THEN);
+ oberon_generate_branch(ctx, cond, false, els);
+ oberon_statement_seq(ctx);
+ oberon_generate_goto(ctx, end);
+ oberon_generate_label(ctx, els);
+ }
+
+ if(ctx -> token == ELSE)
+ {
+ oberon_assert_token(ctx, ELSE);
+ oberon_statement_seq(ctx);
+ }
+
+ oberon_generate_label(ctx, end);
+ oberon_assert_token(ctx, END);
+ }
+ else if(ctx -> token == WHILE)
+ {
+ gen_label_t * begin;
+ gen_label_t * end;
+ oberon_expr_t * cond;
+
+ begin = oberon_generator_reserve_label(ctx);
+ end = oberon_generator_reserve_label(ctx);
+
+ oberon_assert_token(ctx, WHILE);
+ oberon_generate_label(ctx, begin);
+ cond = oberon_expr(ctx);
+ if(cond -> result -> class != OBERON_TYPE_BOOLEAN)
+ {
+ oberon_error(ctx, "condition must be boolean");
+ }
+ oberon_generate_branch(ctx, cond, false, end);
+
+ oberon_assert_token(ctx, DO);
+ oberon_statement_seq(ctx);
+ oberon_generate_goto(ctx, begin);
+
+ oberon_assert_token(ctx, END);
+ oberon_generate_label(ctx, end);
+ }
+ else if(ctx -> token == REPEAT)
+ {
+ gen_label_t * begin;
+ oberon_expr_t * cond;
+
+ begin = oberon_generator_reserve_label(ctx);
+ oberon_generate_label(ctx, begin);
+ oberon_assert_token(ctx, REPEAT);
+
+ oberon_statement_seq(ctx);
+
+ oberon_assert_token(ctx, UNTIL);
+
+ cond = oberon_expr(ctx);
+ if(cond -> result -> class != OBERON_TYPE_BOOLEAN)
+ {
+ oberon_error(ctx, "condition must be boolean");
+ }
+
+ oberon_generate_branch(ctx, cond, true, begin);
+ }
+ else if(ctx -> token == FOR)
+ {
+ oberon_expr_t * from;
+ oberon_expr_t * index;
+ oberon_expr_t * to;
+ oberon_expr_t * bound;
+ oberon_expr_t * by;
+ oberon_expr_t * cond;
+ oberon_expr_t * count;
+ gen_label_t * begin;
+ gen_label_t * end;
+ char * iname;
+ int op;
+
+ begin = oberon_generator_reserve_label(ctx);
+ end = oberon_generator_reserve_label(ctx);
+
+ oberon_assert_token(ctx, FOR);
+ iname = oberon_assert_ident(ctx);
+ index = oberon_ident_item(ctx, iname);
+ oberon_assert_token(ctx, ASSIGN);
+ from = oberon_expr(ctx);
+ oberon_assign(ctx, from, index);
+ oberon_assert_token(ctx, TO);
+ bound = oberon_make_temp_var_item(ctx, index -> result);
+ to = oberon_expr(ctx);
+ oberon_assign(ctx, to, bound);
+ if(ctx -> token == BY)
+ {
+ oberon_assert_token(ctx, BY);
+ by = (oberon_expr_t *) oberon_const_expr(ctx);
+ }
+ else
+ {
+ by = oberon_integer_item(ctx, 1);
+ }
+
+ if(by -> result -> class != OBERON_TYPE_INTEGER)
+ {
+ oberon_error(ctx, "must be integer");
+ }
+
+ if(by -> item.integer > 0)
+ {
+ op = LEQ;
+ }
+ else if(by -> item.integer < 0)
+ {
+ op = GEQ;
+ }
+ else
+ {
+ oberon_error(ctx, "zero step not allowed");
+ }
+
+ oberon_assert_token(ctx, DO);
+ oberon_generate_label(ctx, begin);
+ cond = oberon_make_bin_op(ctx, op, index, bound);
+ oberon_generate_branch(ctx, cond, false, end);
+ oberon_statement_seq(ctx);
+ count = oberon_make_bin_op(ctx, PLUS, index, by);
+ oberon_assign(ctx, count, index);
+ oberon_generate_goto(ctx, begin);
+ oberon_generate_label(ctx, end);
+ oberon_assert_token(ctx, END);
+ }
+ else if(ctx -> token == LOOP)
+ {
+ gen_label_t * begin;
+ gen_label_t * end;
+
+ begin = oberon_generator_reserve_label(ctx);
+ end = oberon_generator_reserve_label(ctx);
+
+ oberon_open_scope(ctx);
+ oberon_assert_token(ctx, LOOP);
+ oberon_generate_label(ctx, begin);
+ ctx -> decl -> exit_label = end;
+ oberon_statement_seq(ctx);
+ oberon_generate_goto(ctx, begin);
+ oberon_generate_label(ctx, end);
+ oberon_assert_token(ctx, END);
+ oberon_close_scope(ctx -> decl);
+ }
+ else if(ctx -> token == EXIT)
+ {
+ oberon_assert_token(ctx, EXIT);
+ if(ctx -> decl -> exit_label == NULL)
+ {
+ oberon_error(ctx, "not in LOOP-END");
+ }
+ oberon_generate_goto(ctx, ctx -> decl -> exit_label);
+ }
else if(ctx -> token == RETURN)
{
oberon_assert_token(ctx, RETURN);
ctx -> void_ptr_type -> base = ctx -> void_type;
oberon_generator_init_type(ctx, ctx -> void_ptr_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);
@@ -2986,6 +3374,118 @@ oberon_new_intrinsic(oberon_context_t * ctx, char * name, GenerateFuncCallback 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)
+{
+ 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;
+
+ if(!arg -> is_item || arg -> item.mode != MODE_TYPE)
+ {
+ oberon_error(ctx, "MIN accept only type");
+ }
+
+ oberon_expr_t * expr;
+ int bits = arg -> result -> size * 8;
+ switch(arg -> result -> class)
+ {
+ case OBERON_TYPE_INTEGER:
+ expr = oberon_integer_item(ctx, -powl(2, bits - 1));
+ break;
+ default:
+ oberon_error(ctx, "allowed only basic types");
+ break;
+ }
+
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_max_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;
+
+ if(!arg -> is_item || arg -> item.mode != MODE_TYPE)
+ {
+ oberon_error(ctx, "MAX accept only type");
+ }
+
+ oberon_expr_t * expr;
+ int bits = arg -> result -> size * 8;
+ switch(arg -> result -> class)
+ {
+ case OBERON_TYPE_INTEGER:
+ expr = oberon_integer_item(ctx, powl(2, bits - 1) - 1);
+ break;
+ default:
+ oberon_error(ctx, "allowed only basic types");
+ break;
+ }
+
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_size_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;
+
+ if(!arg -> is_item || arg -> item.mode != MODE_TYPE)
+ {
+ oberon_error(ctx, "SIZE accept only type");
+ }
+
+ int size;
+ oberon_expr_t * expr;
+ oberon_type_t * type = arg -> result;
+ switch(type -> class)
+ {
+ case OBERON_TYPE_INTEGER:
+ case OBERON_TYPE_BOOLEAN:
+ case OBERON_TYPE_REAL:
+ size = type -> size;
+ break;
+ default:
+ oberon_error(ctx, "TODO SIZE");
+ break;
+ }
+
+ expr = oberon_integer_item(ctx, size);
+ return expr;
+}
+
static oberon_expr_t *
oberon_make_abs_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
@@ -3010,7 +3510,6 @@ oberon_make_abs_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
oberon_error(ctx, "ABS accepts only integers");
}
-
oberon_expr_t * expr;
expr = oberon_new_operator(OP_ABS, result_type, arg, NULL);
return expr;
oberon_generator_init_context(ctx);
register_default_types(ctx);
+
+ /* Functions */
oberon_new_intrinsic(ctx, "ABS", oberon_make_abs_call, NULL);
+ oberon_new_intrinsic(ctx, "MIN", oberon_make_min_call, NULL);
+ oberon_new_intrinsic(ctx, "MAX", oberon_make_max_call, NULL);
+ oberon_new_intrinsic(ctx, "SIZE", oberon_make_size_call, NULL);
+
+ /* Procedures */
oberon_new_intrinsic(ctx, "NEW", NULL, oberon_make_new_call);
return ctx;