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/* $Header$ */
/*
* Copyright (c) 2000, 2002 Michael J. Roberts. All Rights Reserved.
*
* Please see the accompanying license file, LICENSE.TXT, for information
* on using and copying this software.
*/
/*
Name
tcprstyp.h - TADS 3 compiler - parser type definitions
Function
Defines some types for the TADS 3 compiler's parser. Separated from
the main parser include file to reduce the amount of the parser that
has to be included simply for the type definitions.
Notes
Modified
04/09/00 MJRoberts - Creation
*/
#ifndef TCPRSTYP_H
#define TCPRSTYP_H
/* ------------------------------------------------------------------------ */
/*
* Expression evaluation constant value types. As we evaluate an
* expression, we'll attempt to evaluate the constant elements of the
* expression, so that the code we generate has any constant expressions
* computed at compile-time rather than executed at run-time.
*/
enum tc_constval_type_t
{
TC_CVT_UNK, /* unknown type or non-constant value */
TC_CVT_NIL, /* nil */
TC_CVT_TRUE, /* true */
TC_CVT_INT, /* integer value */
TC_CVT_SSTR, /* single-quoted string value */
TC_CVT_LIST, /* list constant */
TC_CVT_OBJ, /* object reference */
TC_CVT_PROP, /* property pointer */
TC_CVT_FUNCPTR, /* function pointer */
TC_CVT_VOCAB_LIST, /* vocabulary list placeholder */
TC_CVT_ANONFUNCPTR, /* anonymous function pointer */
TC_CVT_ENUM, /* enumerator */
TC_CVT_FLOAT /* floating point number */
};
/* ------------------------------------------------------------------------ */
/*
* Symbol types. These values are stored in symbol export files, so the
* order of these entries must not be changed. If new entries are to be
* added, they must be added at the end of the list, and existing
* entries must not be deleted (instead, make an existing entry
* obsolete, but leave its slot occupied).
*/
enum tc_symtype_t
{
/* unknown */
TC_SYM_UNKNOWN = 0,
/* function */
TC_SYM_FUNC,
/* object */
TC_SYM_OBJ,
/* property */
TC_SYM_PROP,
/* local variable */
TC_SYM_LOCAL,
/* parameter */
TC_SYM_PARAM,
/* built-in function */
TC_SYM_BIF,
/* external function */
TC_SYM_EXTFN,
/* code label */
TC_SYM_LABEL,
/* metaclass */
TC_SYM_METACLASS,
/* enumerator */
TC_SYM_ENUM,
/* 'grammar token' */
TC_SYM_GRAMTOK
};
/* ------------------------------------------------------------------------ */
/*
* Object metaclasses. These are the *internal* identifiers we use for the
* T3 metaclasses that the compiler knows about.
*
* These identifiers don't correspond to anything at run-time or in the VM
* - they're not "dependency table index" values (see the T3 VM spec), for
* example. These are simply identifiers we use internally to keep track
* of the metaclass of each static object we define. Note that we don't
* need to list all of the metaclasses here; we only need internal
* identifiers for the metaclasses which the compiler instantiates as
* static objects. Beyond these, the source program can define any number
* of additional metaclasses, for which we'll happily generate code for
* *run-time* instantiation. But for static instantiation, we only can -
* and only need to - generate code for this small set of metaclasses of
* which the compiler itself is aware.
*/
enum tc_metaclass_t
{
/* invalid/unknown */
TC_META_UNKNOWN = -1,
/* TADS object */
TC_META_TADSOBJ = 0,
/* dictionary */
TC_META_DICT,
/* grammar production */
TC_META_GRAMPROD,
/* intrinsic class modifier */
TC_META_ICMOD
};
#endif /* TCPRSTYP_H */
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