diff --git a/src/oberon.c b/src/oberon.c
index 6f9395ca71b81e1f8bf1254f9715a9568bf79610..08543355c92b9e421854e751081df3e6827c8d17 100644 (file)
--- a/src/oberon.c
+++ b/src/oberon.c
#include <assert.h>
#include <stdbool.h>
#include <math.h>
+#include <float.h>
#include "../include/oberon.h"
return x;
}
+static oberon_expr_t *
+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);
+ memset(operator, 0, sizeof *operator);
+
+ operator -> is_item = 0;
+ operator -> result = result;
+ operator -> read_only = 1;
+ operator -> op = op;
+ operator -> left = left;
+ operator -> right = right;
+
+ return (oberon_expr_t *) operator;
+}
+
+static oberon_expr_t *
+oberon_new_item(int mode, oberon_type_t * result, int read_only)
+{
+ oberon_item_t * item;
+ item = malloc(sizeof *item);
+ memset(item, 0, sizeof *item);
+
+ item -> is_item = 1;
+ item -> result = result;
+ item -> read_only = read_only;
+ item -> mode = mode;
+
+ return (oberon_expr_t *)item;
+}
+
+static oberon_type_t *
+oberon_get_type_of_int_value(oberon_context_t * ctx, int64_t i)
+{
+ if(i >= -128 && i <= 127)
+ {
+ return ctx -> byte_type;
+ }
+ else if(i >= -32768 && i <= 32767)
+ {
+ return ctx -> shortint_type;
+ }
+ else if(i >= -2147483648 && i <= 2147483647)
+ {
+ return ctx -> int_type;
+ }
+ else
+ {
+ return ctx -> longint_type;
+ }
+}
+
+static oberon_expr_t *
+oberon_make_integer(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;
+ expr -> item.real = i;
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_char(oberon_context_t * ctx, int64_t i)
+{
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_CHAR, ctx -> char_type, true);
+ expr -> item.integer = i;
+ expr -> item.real = i;
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_real_typed(oberon_context_t * ctx, double r, oberon_type_t * result)
+{
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_REAL, result, true);
+ expr -> item.integer = r;
+ expr -> item.real = r;
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_real(oberon_context_t * ctx, double r, bool longmode)
+{
+ oberon_type_t * result;
+ result = (longmode) ? (ctx -> longreal_type) : (ctx -> real_type);
+ return oberon_make_real_typed(ctx, r, result);
+}
+
+static oberon_expr_t *
+oberon_make_boolean(oberon_context_t * ctx, bool cond)
+{
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_BOOLEAN, ctx -> bool_type, true);
+ expr -> item.integer = cond;
+ expr -> item.real = cond;
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_set(oberon_context_t * ctx, int64_t i)
+{
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_SET, ctx -> set_type, true);
+ expr -> item.integer = i;
+ expr -> item.real = i;
+ return expr;
+}
+
+static oberon_expr_t *
+oberon_make_set_range(oberon_context_t * ctx, int64_t x, int64_t y)
+{
+ oberon_expr_t * expr;
+ expr = oberon_new_item(MODE_SET, ctx -> set_type, true);
+ expr -> item.integer = (x <= y) ? ((2 << y) - (1 << x)) : (0);
+ expr -> item.real = expr -> item.integer;
+ return expr;
+}
+
// =======================================================================
// TABLE
// =======================================================================
case 2:
case 3:
sscanf(ident, "%lf", &real);
+ integer = real;
ctx -> token = REAL;
break;
case 4:
static void oberon_type(oberon_context_t * ctx, oberon_type_t ** type);
static oberon_item_t * oberon_const_expr(oberon_context_t * ctx);
static oberon_expr_t * oberno_make_dereferencing(oberon_context_t * ctx, oberon_expr_t * expr);
-
-static oberon_expr_t *
-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);
- memset(operator, 0, sizeof *operator);
-
- operator -> is_item = 0;
- operator -> result = result;
- operator -> read_only = 1;
- operator -> op = op;
- operator -> left = left;
- operator -> right = right;
-
- return (oberon_expr_t *) operator;
-}
-
-static oberon_expr_t *
-oberon_new_item(int mode, oberon_type_t * result, int read_only)
-{
- oberon_item_t * item;
- item = malloc(sizeof *item);
- memset(item, 0, sizeof *item);
-
- item -> is_item = 1;
- item -> result = result;
- item -> read_only = read_only;
- item -> mode = mode;
-
- return (oberon_expr_t *)item;
-}
+static bool oberon_is_const(oberon_expr_t * expr);
static oberon_expr_t *
oberon_make_unary_op(oberon_context_t * ctx, int token, oberon_expr_t * a)
{
if(result -> class == OBERON_TYPE_SET)
{
- expr = oberon_new_operator(OP_COMPLEMENTATION, result, a, NULL);
+ if(oberon_is_const(a))
+ {
+ expr = oberon_make_set(ctx, ~(a -> item.integer));
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_COMPLEMENTATION, result, a, NULL);
+ }
}
else if(result -> class == OBERON_TYPE_INTEGER)
{
- expr = oberon_new_operator(OP_UNARY_MINUS, result, a, NULL);
+ if(oberon_is_const(a))
+ {
+ expr = oberon_make_integer(ctx, -(a -> item.integer));
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_UNARY_MINUS, result, a, NULL);
+ }
+ }
+ else if(result -> class == OBERON_TYPE_REAL)
+ {
+ if(oberon_is_const(a))
+ {
+ expr = oberon_make_real_typed(ctx, -(a -> item.real), result);
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_UNARY_MINUS, result, a, NULL);
+ }
}
else
{
oberon_error(ctx, "incompatible operator type");
}
- expr = oberon_new_operator(OP_LOGIC_NOT, result, a, NULL);
+ if(oberon_is_const(a))
+ {
+ expr = oberon_make_boolean(ctx, !(a -> item.integer));
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_LOGIC_NOT, result, a, NULL);
+ }
}
else
{
oberon_make_call_proc(ctx, (oberon_item_t *) expr, num_args, arguments);
}
-static oberon_type_t *
-oberon_get_type_of_int_value(oberon_context_t * ctx, int64_t i)
-{
- if(i >= -128 && i <= 127)
- {
- return ctx -> byte_type;
- }
- else if(i >= -32768 && i <= 32767)
- {
- return ctx -> shortint_type;
- }
- else if(i >= -2147483648 && i <= 2147483647)
- {
- return ctx -> int_type;
- }
- else
- {
- return ctx -> longint_type;
- }
-}
-
-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_element(oberon_context_t * ctx)
{
}
oberon_expr_t * set;
- set = oberon_new_operator(OP_RANGE, ctx -> set_type, e1, e2);
+ if(e2 == NULL && oberon_is_const(e1))
+ {
+ set = oberon_make_set(ctx, e1 -> item.integer);
+ }
+ else if(e2 != NULL && oberon_is_const(e1) && oberon_is_const(e2))
+ {
+ set = oberon_make_set_range(ctx, e1 -> item.integer, e2 -> item.integer);
+ }
+ else
+ {
+ set = oberon_new_operator(OP_RANGE, ctx -> set_type, e1, e2);
+ }
return set;
}
+static oberon_expr_t *
+oberon_make_set_union(oberon_context_t * ctx, oberon_expr_t * a, oberon_expr_t * b)
+{
+ if(oberon_is_const(a) && oberon_is_const(b))
+ {
+ return oberon_make_set(ctx, (a -> item.integer | b -> item.integer));
+ }
+ else
+ {
+ return oberon_new_operator(OP_UNION, ctx -> set_type, a, b);
+ }
+}
+
static oberon_expr_t *
oberon_set(oberon_context_t * ctx)
{
oberon_expr_t * set;
oberon_expr_t * elements;
- set = oberon_new_item(MODE_SET, ctx -> set_type, true);
- set -> item.integer = 0;
+ set = oberon_make_set(ctx, 0);
oberon_assert_token(ctx, LBRACE);
if(ISEXPR(ctx -> token))
{
elements = oberon_element(ctx);
- set = oberon_new_operator(OP_UNION, ctx -> set_type, set, elements);
+ set = oberon_make_set_union(ctx, set, elements);
while(ctx -> token == COMMA)
{
oberon_assert_token(ctx, COMMA);
elements = oberon_element(ctx);
- set = oberon_new_operator(OP_UNION, ctx -> set_type, set, elements);
+ set = oberon_make_set_union(ctx, set, elements);
}
}
oberon_assert_token(ctx, RBRACE);
return set;
}
-static oberon_expr_t *
-oberon_make_boolean(oberon_context_t * ctx, bool cond)
-{
- oberon_expr_t * expr;
- expr = oberon_new_item(MODE_BOOLEAN, ctx -> bool_type, true);
- expr -> item.integer = cond;
- return expr;
-}
-
static oberon_expr_t *
oberon_factor(oberon_context_t * ctx)
{
expr = oberon_opt_func_parens(ctx, expr);
break;
case INTEGER:
- expr = oberon_integer_item(ctx, ctx -> integer);
+ expr = oberon_make_integer(ctx, ctx -> integer);
oberon_assert_token(ctx, INTEGER);
break;
case CHAR:
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);
- expr -> item.real = ctx -> real;
+ expr = oberon_make_real(ctx, ctx -> real, ctx -> longmode);
oberon_assert_token(ctx, REAL);
break;
case LBRACE:
@@ -1582,10 +1688,16 @@ oberon_make_bin_op(oberon_context_t * ctx, int token, oberon_expr_t * a, oberon_
oberon_check_src(ctx, b);
}
- bool error = false;
if(token == IN)
{
- expr = oberon_new_operator(OP_IN, ctx -> bool_type, a, b);
+ if(oberon_is_const(a) && oberon_is_const(b))
+ {
+ expr = oberon_make_boolean(ctx, (1 << a -> item.integer) & b -> item.integer);
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_IN, ctx -> bool_type, a, b);
+ }
}
else if(token == IS)
{
@@ -1595,126 +1707,201 @@ 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);
- a = oberon_cast_expr(ctx, a, result);
- b = oberon_cast_expr(ctx, b, result);
- result = ctx -> bool_type;
- if(token == EQUAL)
- {
- expr = oberon_new_operator(OP_EQ, result, a, b);
- }
- else if(token == NEQ)
- {
- expr = oberon_new_operator(OP_NEQ, result, a, b);
- }
- else if(token == LESS)
- {
- expr = oberon_new_operator(OP_LSS, result, a, b);
- }
- else if(token == LEQ)
- {
- expr = oberon_new_operator(OP_LEQ, result, a, b);
- }
- else if(token == GREAT)
- {
- expr = oberon_new_operator(OP_GRT, result, a, b);
- }
- else if(token == GEQ)
+ if(oberon_is_const(a) && oberon_is_const(b)
+ && (oberon_is_real_type(result) || oberon_is_integer_type(result)))
{
- expr = oberon_new_operator(OP_GEQ, result, a, b);
- }
- else if(token == OR)
- {
- expr = oberon_new_operator(OP_LOGIC_OR, result, a, b);
- }
- else if(token == AND)
- {
- expr = oberon_new_operator(OP_LOGIC_AND, result, a, b);
+ if(oberon_is_real_type(result))
+ {
+ double x = a -> item.real;
+ double y = b -> item.real;
+ switch(token)
+ {
+ case EQUAL: expr = oberon_make_boolean(ctx, x == y); break;
+ case NEQ: expr = oberon_make_boolean(ctx, x != y); break;
+ case LESS: expr = oberon_make_boolean(ctx, x < y); break;
+ case LEQ: expr = oberon_make_boolean(ctx, x <= y); break;
+ case GREAT: expr = oberon_make_boolean(ctx, x > y); break;
+ case GEQ: expr = oberon_make_boolean(ctx, x >= y); break;
+ case OR: expr = oberon_make_boolean(ctx, x || y); break;
+ case AND: expr = oberon_make_boolean(ctx, x && y); break;
+ default: assert(0); break;
+ }
+ }
+ else if(oberon_is_integer_type(result))
+ {
+ int64_t x = a -> item.integer;
+ int64_t y = b -> item.integer;
+ switch(token)
+ {
+ case EQUAL: expr = oberon_make_boolean(ctx, x == y); break;
+ case NEQ: expr = oberon_make_boolean(ctx, x != y); break;
+ case LESS: expr = oberon_make_boolean(ctx, x < y); break;
+ case LEQ: expr = oberon_make_boolean(ctx, x <= y); break;
+ case GREAT: expr = oberon_make_boolean(ctx, x > y); break;
+ case GEQ: expr = oberon_make_boolean(ctx, x >= y); break;
+ case OR: expr = oberon_make_boolean(ctx, x || y); break;
+ case AND: expr = oberon_make_boolean(ctx, x && y); break;
+ default: assert(0); break;
+ }
+ }
+ else
+ {
+ assert(0);
+ }
}
else
{
- oberon_error(ctx, "oberon_make_bin_op: bool wat");
+ a = oberon_cast_expr(ctx, a, result);
+ b = oberon_cast_expr(ctx, b, result);
+ result = ctx -> bool_type;
+ switch(token)
+ {
+ case EQUAL: expr = oberon_new_operator(OP_EQ, result, a, b); break;
+ case NEQ: expr = oberon_new_operator(OP_NEQ, result, a, b); break;
+ case LESS: expr = oberon_new_operator(OP_LSS, result, a, b); break;
+ case LEQ: expr = oberon_new_operator(OP_LEQ, result, a, b); break;
+ case GREAT: expr = oberon_new_operator(OP_GRT, result, a, b); break;
+ case GEQ: expr = oberon_new_operator(OP_GEQ, result, a, b); break;
+ case OR: expr = oberon_new_operator(OP_LOGIC_OR, result, a, b); break;
+ case AND: expr = oberon_new_operator(OP_LOGIC_AND, result, a, b); break;
+ default: assert(0); break;
+ }
}
}
else if(token == SLASH)
{
if(oberon_is_set_type(a -> result) && oberon_is_set_type(b -> result))
{
- result = oberon_get_longer_type(ctx, a -> result, b -> result);
- a = oberon_cast_expr(ctx, a, result);
- b = oberon_cast_expr(ctx, b, result);
- expr = oberon_new_operator(OP_SYM_DIFFERENCE, result, a, b);
+ if(oberon_is_const(a) && oberon_is_const(b))
+ {
+ int64_t x = a -> item.integer;
+ int64_t y = b -> item.integer;
+ expr = oberon_make_set(ctx, x ^ y);
+ }
+ else
+ {
+ result = oberon_get_longer_type(ctx, a -> result, b -> result);
+ a = oberon_cast_expr(ctx, a, result);
+ b = oberon_cast_expr(ctx, b, result);
+ expr = oberon_new_operator(OP_SYM_DIFFERENCE, result, a, b);
+ }
}
else
{
result = oberon_get_longer_real_type(ctx, a -> result, b -> result);
- a = oberon_cast_expr(ctx, a, result);
- b = oberon_cast_expr(ctx, b, result);
- expr = oberon_new_operator(OP_DIV, result, a, b);
+ if(oberon_is_const(a) && oberon_is_const(b))
+ {
+ double x = a -> item.real;
+ double y = b -> item.real;
+ expr = oberon_make_real_typed(ctx, x / y, result);
+ }
+ else
+ {
+ a = oberon_cast_expr(ctx, a, result);
+ b = oberon_cast_expr(ctx, b, result);
+ expr = oberon_new_operator(OP_DIV, result, a, b);
+ }
}
}
- else if(token == DIV)
- {
- result = oberon_get_longer_type(ctx, a -> result, b -> result);
- a = oberon_cast_expr(ctx, a, result);
- b = oberon_cast_expr(ctx, b, result);
- expr = oberon_new_operator(OP_DIV, result, a, b);
- }
else
{
result = oberon_get_longer_type(ctx, a -> result, b -> result);
- a = oberon_cast_expr(ctx, a, result);
- b = oberon_cast_expr(ctx, b, result);
- if(oberon_is_set_type(result))
+
+ if(oberon_is_const(a) && oberon_is_const(b))
{
- switch(token)
+ if(oberon_is_set_type(result))
{
- case PLUS:
- expr = oberon_new_operator(OP_UNION, result, a, b);
- break;
- case MINUS:
- expr = oberon_new_operator(OP_DIFFERENCE, result, a, b);
- break;
- case STAR:
- expr = oberon_new_operator(OP_INTERSECTION, result, a, b);
- break;
- default:
- error = true;
- break;
+ int64_t x = a -> item.integer;
+ int64_t y = b -> item.integer;
+ switch(token)
+ {
+ case PLUS: expr = oberon_make_set(ctx, x | y); break;
+ case MINUS: expr = oberon_make_set(ctx, x & ~y); break;
+ case STAR: expr = oberon_make_set(ctx, x & y); break;
+ default: assert(0); break;
+ }
}
- }
- else if(oberon_is_number_type(result))
- {
- switch(token)
+ if(oberon_is_real_type(result))
+ {
+ double x = a -> item.real;
+ double y = b -> item.real;
+ switch(token)
+ {
+ case PLUS: expr = oberon_make_real_typed(ctx, x + y, result); break;
+ case MINUS: expr = oberon_make_real_typed(ctx, x - y, result); break;
+ case STAR: expr = oberon_make_real_typed(ctx, x * y, result); break;
+ default: assert(0); break;
+ }
+ }
+ else if(oberon_is_integer_type(result))
{
- 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;
- case MOD:
- expr = oberon_new_operator(OP_MOD, result, a, b);
- break;
- default:
- error = true;
- break;
+ int64_t x = a -> item.integer;
+ int64_t y = b -> item.integer;
+ switch(token)
+ {
+ case PLUS: expr = oberon_make_integer(ctx, x + y); break;
+ case MINUS: expr = oberon_make_integer(ctx, x - y); break;
+ case STAR: expr = oberon_make_integer(ctx, x * y); break;
+ case DIV: expr = oberon_make_integer(ctx, x / y); break;
+ case MOD: expr = oberon_make_integer(ctx, x % y); break;
+ default: assert(0); break;
+ }
+ }
+ else
+ {
+ assert(0);
}
}
else
{
- error = true;
+ a = oberon_cast_expr(ctx, a, result);
+ b = oberon_cast_expr(ctx, b, result);
+
+
+ if(oberon_is_set_type(result))
+ {
+ switch(token)
+ {
+ case PLUS:
+ expr = oberon_new_operator(OP_UNION, result, a, b);
+ break;
+ case MINUS:
+ expr = oberon_new_operator(OP_DIFFERENCE, result, a, b);
+ break;
+ case STAR:
+ expr = oberon_new_operator(OP_INTERSECTION, result, a, b);
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+ else if(oberon_is_number_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:
+ assert(0);
+ break;
+ }
+ }
+ else
+ {
+ assert(0);
+ }
}
}
- if(error)
- {
- oberon_error(ctx, "invalid operation");
- }
-
return expr;
}
return expr;
}
-static void
-oberon_check_const(oberon_context_t * ctx, oberon_expr_t * expr)
+static bool
+oberon_is_const(oberon_expr_t * expr)
{
- if(expr -> is_item == 0)
+ if(expr -> is_item == false)
{
- oberon_error(ctx, "const expression are required");
+ return false;
}
switch(expr -> item.mode)
case MODE_REAL:
case MODE_CHAR:
case MODE_STRING:
+ case MODE_SET:
case MODE_TYPE:
- /* accept */
+ return true;
break;
default:
- oberon_error(ctx, "const expression are required");
+ return false;
break;
}
+
+ return false;
+}
+
+static void
+oberon_check_const(oberon_context_t * ctx, oberon_expr_t * expr)
+{
+ if(!oberon_is_const(expr))
+ {
+ oberon_error(ctx, "const expression are required");
+ }
}
static oberon_item_t *
@@ -2885,7 +3084,8 @@ oberon_assign(oberon_context_t * ctx, oberon_expr_t * src, oberon_expr_t * dst)
oberon_check_dst(ctx, dst);
oberon_check_assignment_compatible(ctx, src, dst -> result);
- if(oberon_is_string_type(src -> result))
+ if(oberon_is_array_of_char_type(dst -> result)
+ && oberon_is_string_type(src -> result))
{
src -> next = dst;
oberon_make_copy_call(ctx, 2, src);
}
else
{
- by = oberon_integer_item(ctx, 1);
+ by = oberon_make_integer(ctx, 1);
}
if(by -> result -> class != OBERON_TYPE_INTEGER)
@@ -3481,7 +3681,7 @@ oberon_make_min_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
oberon_expr_t * arg;
arg = list_args;
- if(!arg -> is_item || arg -> item.mode != MODE_TYPE)
+ if(!oberon_is_type_expr(arg))
{
oberon_error(ctx, "MIN accept only type");
}
@@ -3491,10 +3691,19 @@ oberon_make_min_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
switch(arg -> result -> class)
{
case OBERON_TYPE_INTEGER:
- expr = oberon_integer_item(ctx, -powl(2, bits - 1));
+ expr = oberon_make_integer(ctx, -powl(2, bits - 1));
+ break;
+ case OBERON_TYPE_BOOLEAN:
+ expr = oberon_make_boolean(ctx, false);
+ break;
+ case OBERON_TYPE_CHAR:
+ expr = oberon_make_char(ctx, 0);
+ break;
+ case OBERON_TYPE_REAL:
+ expr = oberon_make_real_typed(ctx, (bits <= 32) ? (-FLT_MAX) : (-DBL_MAX), arg -> result);
break;
case OBERON_TYPE_SET:
- expr = oberon_integer_item(ctx, 0);
+ expr = oberon_make_integer(ctx, 0);
break;
default:
oberon_error(ctx, "allowed only basic types");
@@ -3520,7 +3729,7 @@ oberon_make_max_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
oberon_expr_t * arg;
arg = list_args;
- if(!arg -> is_item || arg -> item.mode != MODE_TYPE)
+ if(!oberon_is_type_expr(arg))
{
oberon_error(ctx, "MAX accept only type");
}
@@ -3530,10 +3739,19 @@ oberon_make_max_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
switch(arg -> result -> class)
{
case OBERON_TYPE_INTEGER:
- expr = oberon_integer_item(ctx, powl(2, bits - 1) - 1);
+ expr = oberon_make_integer(ctx, powl(2, bits - 1) - 1);
+ break;
+ case OBERON_TYPE_BOOLEAN:
+ expr = oberon_make_boolean(ctx, true);
+ break;
+ case OBERON_TYPE_CHAR:
+ expr = oberon_make_char(ctx, powl(2, bits) - 1);
+ break;
+ case OBERON_TYPE_REAL:
+ expr = oberon_make_real_typed(ctx, (bits <= 32) ? (FLT_MAX) : (DBL_MAX), arg -> result);
break;
case OBERON_TYPE_SET:
- expr = oberon_integer_item(ctx, bits);
+ expr = oberon_make_integer(ctx, bits);
break;
default:
oberon_error(ctx, "allowed only basic types");
@@ -3558,8 +3776,7 @@ oberon_make_size_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list
oberon_expr_t * arg;
arg = list_args;
-
- if(!arg -> is_item || arg -> item.mode != MODE_TYPE)
+ if(!oberon_is_type_expr(arg))
{
oberon_error(ctx, "SIZE accept only type");
}
@@ -3581,7 +3798,7 @@ oberon_make_size_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list
break;
}
- expr = oberon_integer_item(ctx, size);
+ expr = oberon_make_integer(ctx, size);
return expr;
}
@@ -3602,16 +3819,29 @@ oberon_make_abs_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
arg = list_args;
oberon_check_src(ctx, arg);
- oberon_type_t * result_type;
- result_type = arg -> result;
-
- if(result_type -> class != OBERON_TYPE_INTEGER)
+ if(oberon_is_number_type(arg -> result))
{
- oberon_error(ctx, "ABS accepts only integers");
+ oberon_error(ctx, "ABS accepts only numbers");
}
oberon_expr_t * expr;
- expr = oberon_new_operator(OP_ABS, result_type, arg, NULL);
+ if(oberon_is_const(arg))
+ {
+ if(oberon_is_real_type(arg -> result))
+ {
+ double x = arg -> item.real;
+ expr = oberon_make_real(ctx, fabsl(x), arg -> result);
+ }
+ else
+ {
+ int64_t x = arg -> item.integer;
+ expr = oberon_make_integer(ctx, llabs(x));
+ }
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_ABS, arg -> result, arg, NULL);
+ }
return expr;
}
@@ -3749,7 +3979,7 @@ oberon_make_assert_call(oberon_context_t * ctx, int num_args, oberon_expr_t * li
cond = list_args;
oberon_check_src(ctx, cond);
- if(cond -> result -> class != OBERON_TYPE_BOOLEAN)
+ if(!oberon_is_boolean_type(cond -> result))
{
oberon_error(ctx, "expected boolean");
}
@@ -3764,7 +3994,7 @@ oberon_make_assert_call(oberon_context_t * ctx, int num_args, oberon_expr_t * li
num = list_args -> next;
oberon_check_src(ctx, num);
- if(num -> result -> class != OBERON_TYPE_INTEGER)
+ if(!oberon_is_integer_type(num -> result))
{
oberon_error(ctx, "expected integer");
}
@@ -3802,6 +4032,113 @@ oberon_make_halt_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list
oberon_generate_halt(ctx, num -> item.integer);
}
+static oberon_expr_t *
+oberon_make_ash_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);
+ if(arg1 -> result -> class != OBERON_TYPE_INTEGER)
+ {
+ oberon_error(ctx, "expected integer");
+ }
+
+ 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))
+ {
+ int64_t x = arg1 -> item.integer;
+ int64_t y = arg2 -> item.integer;
+ expr = oberon_make_integer(ctx, x * powl(2, y));
+ }
+ else
+ {
+ expr = oberon_new_operator(OP_ASH, arg1 -> result, arg1, arg2);
+ }
+
+ 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_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 void
oberon_new_const(oberon_context_t * ctx, char * name, oberon_expr_t * expr)
{
/* 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, "MAX", oberon_make_max_call, NULL);
+ oberon_new_intrinsic(ctx, "ODD", oberon_make_odd_call, NULL);
oberon_new_intrinsic(ctx, "SIZE", oberon_make_size_call, NULL);
/* Procedures */