diff --git a/src/oberon.c b/src/oberon.c
index 6f9395ca71b81e1f8bf1254f9715a9568bf79610..efa6fed9c13a02e3e3d5438a8be29c7121768970 100644 (file)
--- a/src/oberon.c
+++ b/src/oberon.c
#include <assert.h>
#include <stdbool.h>
#include <math.h>
#include <assert.h>
#include <stdbool.h>
#include <math.h>
+#include <float.h>
#include "../include/oberon.h"
#include "../include/oberon.h"
return x;
}
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_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)
+{
+ 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
// =======================================================================
// =======================================================================
// TABLE
// =======================================================================
case 2:
case 3:
sscanf(ident, "%lf", &real);
case 2:
case 3:
sscanf(ident, "%lf", &real);
+ integer = real;
ctx -> token = REAL;
break;
case 4:
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 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)
static oberon_expr_t *
oberon_make_unary_op(oberon_context_t * ctx, int token, oberon_expr_t * a)
{
if(result -> class == OBERON_TYPE_SET)
{
{
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)
{
}
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
{
}
else
{
oberon_error(ctx, "incompatible operator type");
}
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
{
}
else
{
assert(expr -> is_item);
oberon_expr_t * selector;
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;
selector -> item.parent = (oberon_item_t *) expr;
return selector;
oberon_make_call_proc(ctx, (oberon_item_t *) expr, num_args, arguments);
}
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)
{
static oberon_expr_t *
oberon_element(oberon_context_t * ctx)
{
}
oberon_expr_t * set;
}
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_index(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;
}
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;
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);
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);
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);
}
}
oberon_assert_token(ctx, RBRACE);
return set;
}
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)
{
static oberon_expr_t *
oberon_factor(oberon_context_t * ctx)
{
expr = oberon_opt_func_parens(ctx, expr);
break;
case INTEGER:
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, INTEGER);
break;
case CHAR:
oberon_assert_token(ctx, STRING);
break;
case REAL:
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:
oberon_assert_token(ctx, REAL);
break;
case LBRACE:
@@ -1582,10 +1698,16 @@ oberon_make_bin_op(oberon_context_t * ctx, int token, oberon_expr_t * a, oberon_
oberon_check_src(ctx, b);
}
oberon_check_src(ctx, b);
}
- bool error = false;
if(token == IN)
{
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)
{
}
else if(token == IS)
{
@@ -1595,126 +1717,201 @@ 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);
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)
+ if(oberon_is_const(a) && oberon_is_const(b)
+ && (oberon_is_real_type(result) || oberon_is_integer_type(result)))
{
{
- 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)
- {
- 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
{
}
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))
{
}
}
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);
}
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);
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))
+ {
+ 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
{
{
- 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;
+ assert(0);
}
}
else
{
}
}
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;
}
expr = oberon_term_expr(ctx);
expr = oberon_term_expr(ctx);
- if(minus)
- {
- expr = oberon_make_unary_op(ctx, MINUS, expr);
- }
-
while(ISADDOP(ctx -> token))
{
int token = ctx -> token;
while(ISADDOP(ctx -> token))
{
int token = ctx -> token;
expr = oberon_make_bin_op(ctx, token, expr, inter);
}
expr = oberon_make_bin_op(ctx, token, expr, inter);
}
+ if(minus)
+ {
+ expr = oberon_make_unary_op(ctx, MINUS, expr);
+ }
+
return expr;
}
return expr;
}
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)
}
switch(expr -> item.mode)
case MODE_REAL:
case MODE_CHAR:
case MODE_STRING:
case MODE_REAL:
case MODE_CHAR:
case MODE_STRING:
+ case MODE_SET:
case MODE_TYPE:
case MODE_TYPE:
- /* accept */
+ return true;
break;
default:
break;
default:
- oberon_error(ctx, "const expression are required");
+ return false;
break;
}
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 *
}
static oberon_item_t *
@@ -2885,7 +3094,8 @@ 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);
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);
{
src -> next = dst;
oberon_make_copy_call(ctx, 2, src);
}
else
{
}
else
{
- by = oberon_integer_item(ctx, 1);
+ by = oberon_make_integer(ctx, 1);
}
if(by -> result -> class != OBERON_TYPE_INTEGER)
}
if(by -> result -> class != OBERON_TYPE_INTEGER)
// LIBRARY
// =======================================================================
// 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)
{
static oberon_expr_t *
oberon_make_min_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
@@ -3481,7 +3640,7 @@ oberon_make_min_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
oberon_expr_t * arg;
arg = list_args;
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");
}
{
oberon_error(ctx, "MIN accept only type");
}
@@ -3491,10 +3650,19 @@ oberon_make_min_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
switch(arg -> result -> class)
{
case OBERON_TYPE_INTEGER:
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:
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");
break;
default:
oberon_error(ctx, "allowed only basic types");
@@ -3520,7 +3688,7 @@ oberon_make_max_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
oberon_expr_t * arg;
arg = list_args;
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");
}
{
oberon_error(ctx, "MAX accept only type");
}
@@ -3530,10 +3698,19 @@ oberon_make_max_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
switch(arg -> result -> class)
{
case OBERON_TYPE_INTEGER:
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:
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");
break;
default:
oberon_error(ctx, "allowed only basic types");
@@ -3558,8 +3735,7 @@ oberon_make_size_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list
oberon_expr_t * arg;
arg = list_args;
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");
}
{
oberon_error(ctx, "SIZE accept only type");
}
@@ -3581,7 +3757,7 @@ oberon_make_size_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list
break;
}
break;
}
- expr = oberon_integer_item(ctx, size);
+ expr = oberon_make_integer(ctx, size);
return expr;
}
return expr;
}
@@ -3602,19 +3778,158 @@ oberon_make_abs_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_
arg = list_args;
oberon_check_src(ctx, arg);
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;
}
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;
}
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)
{
static void
oberon_make_new_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
@@ -3749,7 +4064,7 @@ oberon_make_assert_call(oberon_context_t * ctx, int num_args, oberon_expr_t * li
cond = list_args;
oberon_check_src(ctx, cond);
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");
}
{
oberon_error(ctx, "expected boolean");
}
@@ -3764,7 +4079,7 @@ oberon_make_assert_call(oberon_context_t * ctx, int num_args, oberon_expr_t * li
num = list_args -> next;
oberon_check_src(ctx, num);
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");
}
{
oberon_error(ctx, "expected integer");
}
@@ -3802,23 +4117,417 @@ oberon_make_halt_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list
oberon_generate_halt(ctx, num -> item.integer);
}
oberon_generate_halt(ctx, num -> item.integer);
}
-static void
-oberon_new_const(oberon_context_t * ctx, char * name, oberon_expr_t * expr)
-{
- oberon_object_t * constant;
- constant = oberon_define_object(ctx -> decl, name, OBERON_CLASS_CONST, true, false, false);
- oberon_check_const(ctx, expr);
- constant -> value = (oberon_item_t *) expr;
-}
-
-oberon_context_t *
-oberon_create_context(ModuleImportCallback import_module)
+static oberon_expr_t *
+oberon_make_ash_call(oberon_context_t * ctx, int num_args, oberon_expr_t * list_args)
{
{
- oberon_context_t * ctx = calloc(1, sizeof *ctx);
+ if(num_args < 2)
+ {
+ oberon_error(ctx, "too few arguments");
+ }
- oberon_scope_t * world_scope;
- world_scope = oberon_open_scope(ctx);
- ctx -> world_scope = world_scope;
+ 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_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_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_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_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)
+{
+ oberon_object_t * constant;
+ constant = oberon_define_object(ctx -> decl, name, OBERON_CLASS_CONST, true, false, false);
+ oberon_check_const(ctx, 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_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);
+
+
+
+ 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;
+}
+
+oberon_context_t *
+oberon_create_context(ModuleImportCallback import_module)
+{
+ oberon_context_t * ctx = calloc(1, sizeof *ctx);
+
+ oberon_scope_t * world_scope;
+ world_scope = oberon_open_scope(ctx);
+ ctx -> world_scope = world_scope;
ctx -> import_module = import_module;
ctx -> import_module = import_module;
/* Functions */
oberon_new_intrinsic(ctx, "ABS", oberon_make_abs_call, NULL);
/* 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, "ASH", oberon_make_ash_call, NULL);
+ oberon_new_intrinsic(ctx, "CAP", oberon_make_cap_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, "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, "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, "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, "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);
return ctx;
}
return ctx;
}