90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
/*
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* $Id: lisp.h,v 1.4 2005-04-24 07:48:16 bacon Exp $
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*/
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#ifndef _XP_LISP_LISP_H_
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#define _XP_LISP_LISP_H_
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#include <xp/lisp/types.h>
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#include <xp/lisp/token.h>
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#include <xp/lisp/object.h>
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#include <xp/lisp/memory.h>
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#include <xp/bas/stdio.h> // TODO: may have to remove dependency on stdio?
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// NOTICE: the function of xp_lisp_creader_t must return -1 on error
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// and 0 on success. the first argument must be set to
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// XP_LISP_END_CHAR at the end of input.
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typedef int (*xp_lisp_creader_t) (xp_cint_t*, void*);
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#define XP_LISP_ERR(lsp) ((lsp)->error)
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#define XP_LISP_ERR_NONE 0
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#define XP_LISP_ERR_ABORT 1
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#define XP_LISP_ERR_END 2
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#define XP_LISP_ERR_MEM 3
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#define XP_LISP_ERR_READ 4
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#define XP_LISP_ERR_SYNTAX 5
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#define XP_LISP_ERR_BAD_ARG 6
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#define XP_LISP_ERR_WRONG_ARG 7
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#define XP_LISP_ERR_TOO_FEW_ARGS 8
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#define XP_LISP_ERR_TOO_MANY_ARGS 9
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#define XP_LISP_ERR_UNDEF_FUNC 10
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#define XP_LISP_ERR_BAD_FUNC 11
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#define XP_LISP_ERR_DUP_FORMAL 12
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#define XP_LISP_ERR_BAD_SYMBOL 13
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#define XP_LISP_ERR_UNDEF_SYMBOL 14
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#define XP_LISP_ERR_EMPTY_BODY 15
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#define XP_LISP_ERR_BAD_VALUE 16
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struct xp_lisp_t
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{
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/* error number */
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int error;
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int opt_undef_symbol;
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/* for read */
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xp_cint_t curc;
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xp_lisp_creader_t creader;
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void* creader_extra;
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int creader_just_set;
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xp_lisp_token_t* token;
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/* for eval */
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xp_size_t max_eval_depth; // TODO:....
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xp_size_t eval_depth;
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/* for print */
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XP_FILE* outstream;
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/* memory manager */
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xp_lisp_mem_t* mem;
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};
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typedef struct xp_lisp_t xp_lisp_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* lsp.c */
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xp_lisp_t* xp_lisp_new (xp_size_t mem_ubound, xp_size_t mem_ubound_inc);
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void xp_lisp_free (xp_lisp_t* lsp);
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int xp_lisp_error (xp_lisp_t* lsp, xp_char_t* buf, xp_size_t size);
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/* read.c */
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// TODO: move xp_lisp_set_creader to lsp.c
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void xp_lisp_set_creader (xp_lisp_t* lsp, xp_lisp_creader_t func, void* extra);
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xp_lisp_obj_t* xp_lisp_read (xp_lisp_t* lsp);
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/* eval.c */
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xp_lisp_obj_t* xp_lisp_eval (xp_lisp_t* lsp, xp_lisp_obj_t* obj);
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/* print.c */
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void xp_lisp_print (xp_lisp_t* lsp, xp_lisp_obj_t* obj);
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#ifdef __cplusplus
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}
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#endif
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#endif
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