152 lines
5.1 KiB
C
152 lines
5.1 KiB
C
/*
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function.h
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QC function support code
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Copyright (C) 2002 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2002/05/08
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef __function_h
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#define __function_h
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/** \defgroup qfcc_function Internal function structures.
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\ingroup qfcc
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*/
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//@{
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#include "QF/pr_comp.h"
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#include "QF/pr_debug.h"
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#include "def.h"
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/** Represent an overloading of a function.
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Every function, whether overloaded or not, has an entry in the overloaded
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function database.
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*/
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typedef struct overloaded_function_s {
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struct overloaded_function_s *next;
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const char *name; ///< source level name of function
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const char *full_name; ///< progs name of function, with type
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///< encoding
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struct type_s *type; ///< type of this function
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int overloaded; ///< is this function overloaded
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string_t file; ///< source file of the function
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int line; ///< source line of this function
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} overloaded_function_t;
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/** Internal representation of a function.
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*/
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typedef struct function_s {
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struct function_s *next;
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int builtin; ///< if non 0, call an internal function
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int code; ///< first statement
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int function_num;
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int line_info;
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int local_defs;
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string_t s_file; ///< source file with definition
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string_t s_name; ///< name of function in output
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int temp_num; ///< number for next temp var
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struct def_s *temp_defs[4]; ///< freed temp vars (by size)
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struct def_s *def; ///< output def holding function number
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struct symbol_s *sym; ///< internal symbol for this function
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/** Root scope symbol table of the function.
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Sub-scope symbol tables are not directly accessible, but all defs
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created in the function's local data space are recorded in the root
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scope symbol table's defspace.
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*/
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struct symtab_s *symtab;
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struct reloc_s *refs; ///< relocation targets for this function
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struct expr_s *var_init;
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const char *name; ///< nice name for __PRETTY_FUNCTION__
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struct sblock_s *sblock; ///< initial node of function's code
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struct flowgraph_s *graph; ///< the function's flow graph
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/** Array of pointers to all variables referenced by the function's code.
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This permits ready mapping of (function specific) variable number to
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variable in the flow analyzer.
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*/
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struct flowvar_s **vars;
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int num_vars; ///< total number of variables referenced
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struct set_s *global_vars;///< set indicating which vars are global
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struct statement_s **statements;
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int num_statements;
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} function_t;
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extern function_t *current_func;
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/** Representation of a function parameter.
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\note The first two fields match the first two fields of keywordarg_t
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in method.h
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*/
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typedef struct param_s {
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struct param_s *next;
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const char *selector;
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struct type_s *type; //FIXME redundant
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const char *name; //FIXME redundant
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struct symbol_s *symbol;
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} param_t;
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struct expr_s;
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struct symbol_s;
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struct symtab_s;
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param_t *new_param (const char *selector, struct type_s *type,
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const char *name);
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param_t *param_append_identifiers (param_t *params, struct symbol_s *idents,
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struct type_s *type);
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param_t *_reverse_params (param_t *params, param_t *next);
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param_t *reverse_params (param_t *params);
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param_t *copy_params (param_t *params);
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struct type_s *parse_params (struct type_s *type, param_t *params);
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param_t *check_params (param_t *params);
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enum storage_class_e;
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struct defspace_s;
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void make_function (struct symbol_s *sym, const char *nice_name,
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struct defspace_s *space, enum storage_class_e storage);
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struct symbol_s *function_symbol (struct symbol_s *sym,
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int overload, int create);
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struct expr_s *find_function (struct expr_s *fexpr, struct expr_s *params);
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function_t *new_function (const char *name, const char *nice_name);
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void add_function (function_t *f);
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function_t *begin_function (struct symbol_s *sym, const char *nicename,
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struct symtab_s *parent, int far);
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function_t *build_code_function (struct symbol_s *fsym,
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struct expr_s *state_expr,
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struct expr_s *statements);
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function_t *build_builtin_function (struct symbol_s *sym,
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struct expr_s *bi_val, int far);
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void build_function (function_t *f);
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void finish_function (function_t *f);
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void emit_function (function_t *f, struct expr_s *e);
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int function_parms (function_t *f, byte *parm_size);
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void clear_functions (void);
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//@}
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#endif//__function_h
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