#include "c-lang.h"
#include "valprint.h"
#include "gdbarch.h"
+#include "m2-exp.h"
-static struct value *
-evaluate_subexp_modula2 (struct type *expect_type, struct expression *exp,
- int *pos, enum noside noside)
-{
- enum exp_opcode op = exp->elts[*pos].opcode;
- struct value *arg1;
- struct value *arg2;
- struct type *type;
+/* A helper function for UNOP_HIGH. */
- switch (op)
+struct value *
+eval_op_m2_high (struct type *expect_type, struct expression *exp,
+ enum noside noside,
+ struct value *arg1)
+{
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return arg1;
+ else
{
- case UNOP_HIGH:
- (*pos)++;
- arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
-
- if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
- return arg1;
- else
- {
- arg1 = coerce_ref (arg1);
- type = check_typedef (value_type (arg1));
-
- if (m2_is_unbounded_array (type))
- {
- struct value *temp = arg1;
-
- type = type->field (1).type ();
- /* i18n: Do not translate the "_m2_high" part! */
- arg1 = value_struct_elt (&temp, NULL, "_m2_high", NULL,
- _("unbounded structure "
- "missing _m2_high field"));
-
- if (value_type (arg1) != type)
- arg1 = value_cast (type, arg1);
- }
- }
- return arg1;
-
- case BINOP_SUBSCRIPT:
- (*pos)++;
- arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
- arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
- if (noside == EVAL_SKIP)
- goto nosideret;
- /* If the user attempts to subscript something that is not an
- array or pointer type (like a plain int variable for example),
- then report this as an error. */
-
arg1 = coerce_ref (arg1);
- type = check_typedef (value_type (arg1));
+ struct type *type = check_typedef (value_type (arg1));
if (m2_is_unbounded_array (type))
{
struct value *temp = arg1;
- type = type->field (0).type ();
- if (type == NULL || (type->code () != TYPE_CODE_PTR))
- {
- warning (_("internal error: unbounded "
- "array structure is unknown"));
- return evaluate_subexp_standard (expect_type, exp, pos, noside);
- }
- /* i18n: Do not translate the "_m2_contents" part! */
- arg1 = value_struct_elt (&temp, NULL, "_m2_contents", NULL,
+
+ type = type->field (1).type ();
+ /* i18n: Do not translate the "_m2_high" part! */
+ arg1 = value_struct_elt (&temp, {}, "_m2_high", NULL,
_("unbounded structure "
- "missing _m2_contents field"));
-
+ "missing _m2_high field"));
+
if (value_type (arg1) != type)
arg1 = value_cast (type, arg1);
-
- check_typedef (value_type (arg1));
- return value_ind (value_ptradd (arg1, value_as_long (arg2)));
}
- else
- if (type->code () != TYPE_CODE_ARRAY)
- {
- if (type->name ())
- error (_("cannot subscript something of type `%s'"),
- type->name ());
- else
- error (_("cannot subscript requested type"));
- }
-
- if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
- else
- return value_subscript (arg1, value_as_long (arg2));
-
- default:
- return evaluate_subexp_standard (expect_type, exp, pos, noside);
}
-
- nosideret:
- return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1);
+ return arg1;
}
-\f
-/* Table of operators and their precedences for printing expressions. */
+/* A helper function for BINOP_SUBSCRIPT. */
-const struct op_print m2_language::op_print_tab[] =
+struct value *
+eval_op_m2_subscript (struct type *expect_type, struct expression *exp,
+ enum noside noside,
+ struct value *arg1, struct value *arg2)
{
- {"+", BINOP_ADD, PREC_ADD, 0},
- {"+", UNOP_PLUS, PREC_PREFIX, 0},
- {"-", BINOP_SUB, PREC_ADD, 0},
- {"-", UNOP_NEG, PREC_PREFIX, 0},
- {"*", BINOP_MUL, PREC_MUL, 0},
- {"/", BINOP_DIV, PREC_MUL, 0},
- {"DIV", BINOP_INTDIV, PREC_MUL, 0},
- {"MOD", BINOP_REM, PREC_MUL, 0},
- {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
- {"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
- {"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
- {"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
- {"=", BINOP_EQUAL, PREC_EQUAL, 0},
- {"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
- {"<=", BINOP_LEQ, PREC_ORDER, 0},
- {">=", BINOP_GEQ, PREC_ORDER, 0},
- {">", BINOP_GTR, PREC_ORDER, 0},
- {"<", BINOP_LESS, PREC_ORDER, 0},
- {"^", UNOP_IND, PREC_PREFIX, 0},
- {"@", BINOP_REPEAT, PREC_REPEAT, 0},
- {"CAP", UNOP_CAP, PREC_BUILTIN_FUNCTION, 0},
- {"CHR", UNOP_CHR, PREC_BUILTIN_FUNCTION, 0},
- {"ORD", UNOP_ORD, PREC_BUILTIN_FUNCTION, 0},
- {"FLOAT", UNOP_FLOAT, PREC_BUILTIN_FUNCTION, 0},
- {"HIGH", UNOP_HIGH, PREC_BUILTIN_FUNCTION, 0},
- {"MAX", UNOP_MAX, PREC_BUILTIN_FUNCTION, 0},
- {"MIN", UNOP_MIN, PREC_BUILTIN_FUNCTION, 0},
- {"ODD", UNOP_ODD, PREC_BUILTIN_FUNCTION, 0},
- {"TRUNC", UNOP_TRUNC, PREC_BUILTIN_FUNCTION, 0},
- {NULL, OP_NULL, PREC_BUILTIN_FUNCTION, 0}
-};
-\f
+ /* If the user attempts to subscript something that is not an
+ array or pointer type (like a plain int variable for example),
+ then report this as an error. */
-const struct exp_descriptor m2_language::exp_descriptor_modula2 =
-{
- print_subexp_standard,
- operator_length_standard,
- operator_check_standard,
- dump_subexp_body_standard,
- evaluate_subexp_modula2
-};
+ arg1 = coerce_ref (arg1);
+ struct type *type = check_typedef (value_type (arg1));
+
+ if (m2_is_unbounded_array (type))
+ {
+ struct value *temp = arg1;
+ type = type->field (0).type ();
+ if (type == NULL || (type->code () != TYPE_CODE_PTR))
+ error (_("internal error: unbounded "
+ "array structure is unknown"));
+ /* i18n: Do not translate the "_m2_contents" part! */
+ arg1 = value_struct_elt (&temp, {}, "_m2_contents", NULL,
+ _("unbounded structure "
+ "missing _m2_contents field"));
+
+ if (value_type (arg1) != type)
+ arg1 = value_cast (type, arg1);
+
+ check_typedef (value_type (arg1));
+ return value_ind (value_ptradd (arg1, value_as_long (arg2)));
+ }
+ else
+ if (type->code () != TYPE_CODE_ARRAY)
+ {
+ if (type->name ())
+ error (_("cannot subscript something of type `%s'"),
+ type->name ());
+ else
+ error (_("cannot subscript requested type"));
+ }
+
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
+ else
+ return value_subscript (arg1, value_as_long (arg2));
+}
+
+\f
/* Single instance of the M2 language. */
projects / deliverable / binutils-gdb.git / blobdiff