123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
/* $Header$ */
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/* internal type representation */
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/* structure for struct/union elements */
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struct fields {
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long fld_pos; /* position of field */
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long fld_bitsize; /* size in bits */
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struct type *fld_type; /* type of field */
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char *fld_name; /* name of field */
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};
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/* structure for enumeration literals */
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struct literal {
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long lit_val; /* value of literal */
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char *lit_name; /* name of literal */
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};
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/* structure for parameters */
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struct param {
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struct type *par_type; /* type of parameter */
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char par_kind; /* kind of parameter ('p', 'i', or 'v') */
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};
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typedef struct type {
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short ty_class;
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#define T_SUBRANGE 1
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#define T_ARRAY 2
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#define T_STRUCT 3
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#define T_UNION 4
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#define T_ENUM 5
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#define T_POINTER 6
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#define T_FILE 7
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#define T_PROCEDURE 8
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#define T_SET 9
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#define T_REAL 10
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#define T_INTEGER 11
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#define T_VOID 12
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#define T_UNSIGNED 13
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#define T_STRING 14 /* only for string constants ... */
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#define T_CROSS 15 /* cross reference to type */
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#define T_INCOMPLETE 100
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long ty_size;
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struct symbol *ty_sym;
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union {
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/* cross references */
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struct type *typ_cross;
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#define ty_cross ty_v.typ_cross
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/* procedures/functions: */
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struct {
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int typ_nparams;
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struct type *typ_retval;
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struct param *typ_params;
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long typ_nbparams;
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} ty_proc;
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#define ty_nparams ty_v.ty_proc.typ_nparams
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#define ty_retval ty_v.ty_proc.typ_retval
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#define ty_params ty_v.ty_proc.typ_params
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#define ty_nbparams ty_v.ty_proc.typ_nbparams
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/* pointers, files: */
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struct type *typ_ptrto;
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#define ty_ptrto ty_v.typ_ptrto
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#define ty_fileof ty_v.typ_ptrto
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/* arrays: */
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struct {
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long typ_lb, typ_hb;
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struct type *typ_index;
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struct type *typ_elements;
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} ty_array;
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#define ty_lb ty_v.ty_array.typ_lb
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#define ty_hb ty_v.ty_array.typ_hb
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#define ty_index ty_v.ty_array.typ_index
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#define ty_elements ty_v.ty_array.typ_elements
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/* subranges: */
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struct {
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long typ_low, typ_up;
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int typ_A;
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struct type *typ_base;
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} ty_subrange;
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#define ty_A ty_v.ty_subrange.typ_A
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#define ty_low ty_v.ty_subrange.typ_low
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#define ty_up ty_v.ty_subrange.typ_up
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#define ty_base ty_v.ty_subrange.typ_base
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/* structures/unions: */
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struct {
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unsigned typ_nfields; /* number of field structures */
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struct fields *typ_fields;
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} ty_struct;
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#define ty_nfields ty_v.ty_struct.typ_nfields
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#define ty_fields ty_v.ty_struct.typ_fields
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/* enumerations: */
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struct {
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unsigned typ_nenums; /* number of enumeration literals */
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struct literal *typ_literals;
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} ty_enum;
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#define ty_nenums ty_v.ty_enum.typ_nenums
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#define ty_literals ty_v.ty_enum.typ_literals
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/* bit sets: */
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struct {
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struct type *typ_setbase; /* base type of set elements */
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long typ_setlow; /* low bound */
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} ty_set;
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#define ty_setbase ty_v.ty_set.typ_setbase
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#define ty_setlow ty_v.ty_set.typ_setlow
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} ty_v;
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} t_type, *p_type;
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/* ALLOCDEF "type" 50 */
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extern p_type
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subrange_type(),
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array_type(),
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*tp_lookup();
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extern long
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param_size(),
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compute_size();
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extern p_type char_type, uchar_type, bool_type, int_type,
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long_type, double_type, string_type, address_type;
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extern p_type void_type;
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extern long int_size, pointer_size, long_size, double_size;
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