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c_main.c

/*
 *  Fenix - Videogame compiler/interpreter
 *  Current release       : FENIX - PROJECT 1.0 - R 0.84
 *  Last stable release   :
 *  Project documentation : http://fenix.divsite.net
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 *  Copyright © 1999 José Luis Cebrián Pagüe
 *  Copyright © 2002 Fenix Team
 *
 */

#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>

#ifdef TARGET_BEOS
#include <dlfcn.h>
#endif

#include <fnx_loadlib.h>

#include "fxc.h"
#include "messages.c"


/* ---------------------------------------------------------------------- */
/* Módulo principal del compilador. Contiene código que inicializa los    */
/* identificadores conocidos, así como las funciones de compilado de      */
/* nivel más alto                                                         */
/* ---------------------------------------------------------------------- */

/* Tipos */
int identifier_dword ;
int identifier_word ;
int identifier_byte ;
int identifier_int ;
int identifier_short ;
int identifier_char ;
int identifier_unsigned ;
int identifier_signed ;
int identifier_string ;
int identifier_float ;
int identifier_struct ;
int identifier_type ;

int identifier_declare ;

int identifier_program ;
int identifier_debug ;
int identifier_const ;
int identifier_begin ;
int identifier_end ;
int identifier_global ;
int identifier_local ;
int identifier_public ;
int identifier_private ;
int identifier_const ;
int identifier_dup ;
int identifier_from ;
int identifier_step ;
int identifier_to ;
int identifier_if ;
int identifier_else ;
int identifier_elseif ;
int identifier_for ;
int identifier_while ;
int identifier_frame ;
int identifier_clone ;

int identifier_onexit ;

int identifier_switch ;
int identifier_case ;
int identifier_default ;
int identifier_repeat ;
int identifier_until ;
int identifier_loop ;
int identifier_break ;
int identifier_continue ;
int identifier_return ;
int identifier_process ;
int identifier_function ;
int identifier_bandoffset ;
int identifier_offset ;
int identifier_sizeof ;
int identifier_pointer ;

int identifier_and ;
int identifier_or  ;
int identifier_xor ;
int identifier_not ;

int identifier_band ;
int identifier_bor  ;
int identifier_bxor ;
int identifier_bnot ;

int identifier_plus ;
int identifier_minus ;
int identifier_plusplus ;
int identifier_minusminus ;
int identifier_equal ;
int identifier_multiply ;
int identifier_mod ;
int identifier_divide ;
int identifier_semicolon ;
int identifier_colon ;
int identifier_comma ;
int identifier_ror ;
int identifier_rol ;
int identifier_rightp ;
int identifier_leftp ;
int identifier_rightb ;
int identifier_leftb ;
int identifier_point ;
int identifier_twopoints ;

int identifier_eq ;
int identifier_ne ;
int identifier_gte ;
int identifier_lte ;
int identifier_lt ;
int identifier_gt ;
int identifier_question ;

int identifier_plusequal ;
int identifier_minusequal ;
int identifier_multequal ;
int identifier_divequal ;
int identifier_modequal ;
int identifier_orequal ;
int identifier_xorequal ;
int identifier_andequal ;
int identifier_rorequal ;
int identifier_rolequal ;
int identifier_mouse ;
int identifier_include ;

int identifier_import ;

int reserved_words ;

#ifdef TARGET_MAC
static int debug ;
#else
int debug;
#endif

void compile_init ()
{
    /* Initialize reserved words */

    identifier_dword        = identifier_add("DWORD") ;
    identifier_word         = identifier_add("WORD") ;
    identifier_byte         = identifier_add("BYTE") ;
    identifier_int          = identifier_add("INT") ;
    identifier_short        = identifier_add("SHORT") ;
    identifier_char         = identifier_add("CHAR") ;
    identifier_unsigned     = identifier_add("UNSIGNED") ;
    identifier_signed       = identifier_add("SIGNED") ;
    identifier_float        = identifier_add("FLOAT") ;
    identifier_string       = identifier_add("STRING") ;
    identifier_struct       = identifier_add("STRUCT") ;

    identifier_declare      = identifier_add("DECLARE") ;

    identifier_include      = identifier_add("INCLUDE") ;
    identifier_program      = identifier_add("PROGRAM") ;
    identifier_debug        = identifier_add("DEBUG") ;
    identifier_const        = identifier_add("CONST") ;
    identifier_begin        = identifier_add("BEGIN") ;
    identifier_end          = identifier_add("END") ;
    identifier_process      = identifier_add("PROCESS") ;
    identifier_function     = identifier_add("FUNCTION") ;
    identifier_global       = identifier_add("GLOBAL") ;
    identifier_local        = identifier_add("LOCAL") ;
    identifier_public       = identifier_add("PUBLIC") ;
    identifier_private      = identifier_add("PRIVATE") ;
    identifier_dup          = identifier_add("DUP") ;
    identifier_from         = identifier_add("FROM") ;
    identifier_to           = identifier_add("TO") ;
    identifier_step         = identifier_add("STEP") ;
    identifier_for          = identifier_add("FOR") ;
    identifier_while        = identifier_add("WHILE") ;
    identifier_repeat       = identifier_add("REPEAT") ;
    identifier_until        = identifier_add("UNTIL") ;
    identifier_switch       = identifier_add("SWITCH") ;
    identifier_case         = identifier_add("CASE") ;
    identifier_default      = identifier_add("DEFAULT") ;
    identifier_loop         = identifier_add("LOOP") ;
    identifier_break        = identifier_add("BREAK") ;
    identifier_continue     = identifier_add("CONTINUE") ;
    identifier_return       = identifier_add("RETURN") ;
    identifier_if           = identifier_add("IF") ;
    identifier_else         = identifier_add("ELSE") ;
    identifier_elseif       = identifier_add("ELSEIF") ;
    identifier_frame        = identifier_add("FRAME") ;
    identifier_clone        = identifier_add("CLONE") ;

    identifier_onexit       = identifier_add("ONEXIT") ;

    identifier_and          = identifier_add("AND");
    identifier_or           = identifier_add("OR");
    identifier_xor          = identifier_add("XOR");
    identifier_not          = identifier_add("NOT");

    identifier_band         = identifier_add("BAND");
    identifier_bor          = identifier_add("BOR");
    identifier_bxor         = identifier_add("BXOR");
    identifier_bnot         = identifier_add("BNOT");

    identifier_sizeof       = identifier_add("SIZEOF");
    identifier_offset       = identifier_add("OFFSET");
    identifier_pointer      = identifier_add("POINTER");
    identifier_type         = identifier_add("TYPE");

    identifier_bandoffset   = identifier_add("&");

    identifier_add_as   ("!", identifier_not) ;
    identifier_add_as   ("&&", identifier_and) ;
    identifier_add_as   ("||", identifier_or) ;
    identifier_add_as   ("^^", identifier_xor) ;

    identifier_add_as   ("~", identifier_bnot) ;
//    identifier_add_as   ("&", identifier_band) ;
    identifier_add_as   ("|", identifier_bor) ;
    identifier_add_as   ("^", identifier_bxor) ;

    identifier_plus         = identifier_add("+") ;
    identifier_minus        = identifier_add("-") ;
    identifier_plusplus     = identifier_add("++") ;
    identifier_minusminus   = identifier_add("--") ;
    identifier_multiply     = identifier_add("*") ;
    identifier_mod          = identifier_add("%") ;
    identifier_divide       = identifier_add("/") ;
    identifier_equal        = identifier_add("=") ;
    identifier_semicolon    = identifier_add(";") ;
    identifier_comma        = identifier_add(",") ;
    identifier_ror          = identifier_add(">>") ;
    identifier_rol          = identifier_add("<<") ;
    identifier_rightp       = identifier_add(")") ;
    identifier_leftp        = identifier_add("(") ;
    identifier_rightb       = identifier_add("]") ;
    identifier_leftb        = identifier_add("[") ;
    identifier_point        = identifier_add(".") ;
    identifier_twopoints    = identifier_add("..") ;
    identifier_question     = identifier_add("?") ;

    identifier_add_as   ("MOD", identifier_mod) ;
//    identifier_add_as   (":", identifier_semicolon) ;           // <<<--- Conflicto con identifier_colon
    identifier_add_as   ("ELIF", identifier_elseif);
    identifier_add_as   ("ELSIF", identifier_elseif);

    identifier_colon        = identifier_add(":") ;             // <<<--- Conflicto con identifier_semicolon

    identifier_eq           = identifier_add("==") ;
    identifier_ne           = identifier_add("!=") ;
    identifier_gt           = identifier_add(">") ;
    identifier_lt           = identifier_add("<") ;
    identifier_gte          = identifier_add(">=") ;
    identifier_lte          = identifier_add("<=") ;

    identifier_add_as   ("<>", identifier_ne) ;
    identifier_add_as   ("=>", identifier_gte) ;
    identifier_add_as   ("=<", identifier_lte) ;

    identifier_plusequal    = identifier_add("+=") ;
    identifier_andequal     = identifier_add("&=") ;
    identifier_xorequal     = identifier_add("^=") ;
    identifier_orequal      = identifier_add("|=") ;
    identifier_divequal     = identifier_add("/=") ;
    identifier_modequal     = identifier_add("%=") ;
    identifier_multequal    = identifier_add("*=") ;
    identifier_minusequal   = identifier_add("-=") ;
    identifier_rorequal     = identifier_add(">>=") ;
    identifier_rolequal     = identifier_add("<<=") ;

    identifier_import     = identifier_add("IMPORT") ;

    reserved_words        = identifier_next_code() ;

    identifier_mouse      = identifier_add("MOUSE") ;

    varspace_init (&global) ;
    varspace_init (&local) ;
    globaldata = segment_new() ;
    localdata = segment_new() ;

}

extern void token_dump() ;

void compile_error (const char *fmt, ...)
{
    char text[4000] ;
    va_list ap;
    va_start(ap, fmt);
    vsprintf(text, fmt, ap);
    va_end(ap);

    fprintf (stdout, MSG_COMPILE_ERROR, files[current_file], line_count, text) ;
    token_dump () ;
    exit (2) ;
}

int imports[1024] ;
int nimports = 0 ;

// Funcion nula
void * compile_export ( const char * name )
{
    return ( NULL ) ;
}

void compile_import ()
{
    const char  * filename ;
    void        * library = NULL;
    dlfunc      RegisterFunctions ;

#if defined( TARGET_Linux ) || defined ( TARGET_BEOS ) || defined ( TARGET_MAC ) || defined ( TARGET_BSD )
    char        soname[1024];
    char        * ptr;
#endif
    token_next() ;
    if (token.type != STRING) {
        compile_error (MSG_STRING_EXP) ;
    }

    imports[nimports++] = token.code ;

    filename = string_get(token.code) ;

#if defined( TARGET_Linux ) || defined ( TARGET_BEOS ) || defined ( TARGET_BSD )
    #define DLLEXT      ".so"
    #define SIZEDLLEXT  3

    snprintf (soname, 1024, "./%s" DLLEXT, filename);
#endif

#ifdef TARGET_MAC
    int indexMac;
    int contmac=0;
    char *nameMac=files[current_file];

    /* Get the real directory for Mac OS X */

    while (contmac<strlen(nameMac))
    {
        if (nameMac[contmac]=='/') {
            indexMac=contmac;
        }
        contmac++;
    }

    contmac=0;

    while (contmac<indexMac)
    {
        files[path_file][contmac]=nameMac[contmac];
        contmac++;
    }
    files[path_file][contmac]='\0';

    #define DLLEXT      ".dylib"
    #define SIZEDLLEXT  6

    snprintf (soname, 1024, "%s/%s" DLLEXT, files[path_file], filename);
#endif

#ifndef TARGET_Win32
    /* Clean the name (strip .DLL, and use lowercase) (Para operativos no WINDOWS) */

    for (ptr = soname ; *ptr ; ptr++)
        *ptr = TOLOWER(*ptr);

    if (strlen(soname) > (4+SIZEDLLEXT) && strcmp(ptr-(4+SIZEDLLEXT), ".dll" DLLEXT) == 0) {
        strcpy (ptr-(4+SIZEDLLEXT), DLLEXT);
    }

    filename = soname;
#endif

    library  = dlopen (filename, RTLD_NOW | RTLD_GLOBAL) ;
    if (!library) compile_error (dlerror()) ;

    RegisterFunctions = dlsym (library, "RegisterFunctions") ;
    if (!RegisterFunctions) compile_error(MSG_NO_COMPATIBLE_DLL) ;

    (*RegisterFunctions)(compile_export, sysproc_add) ;
}

void compile_constants ()
{
    int code;
    expresion_result res;

    for (;;)
    {
        token_next() ;
        if (token.type == NOTOKEN) {
            break ;
        }
        if (token.type != IDENTIFIER) {
            compile_error (MSG_CONSTANT_NAME_EXP) ;
        }
        if (token.code == identifier_semicolon) {
            continue ;
        }
        if (token.code == identifier_begin ||
            token.code == identifier_local ||
            token.code == identifier_public ||
            token.code == identifier_private ||
            token.code == identifier_global)
        {
            token_back() ;
            return ;
        }

        if (token.code == identifier_end) {
            return ;
        }

        if (token.code < reserved_words) {
            compile_error (MSG_INVALID_IDENTIFIER);
        }

        code = token.code ;

        token_next() ;
        if (token.type != IDENTIFIER || token.code != identifier_equal) {
            compile_error (MSG_EXPECTED, "=") ;
        }

        res = compile_expresion(1, 0, 0) ;
        if (typedef_base(res.type) != TYPE_STRING &&
            typedef_base(res.type) != TYPE_FLOAT &&
            typedef_base(res.type) != TYPE_INT &&
            typedef_base(res.type) != TYPE_DWORD)
        {
            compile_error (MSG_INVALID_TYPE);
        }

        constants_add (code, res.type, typedef_base(res.type) == TYPE_FLOAT ? *(int *)&res.fvalue : res.value) ;

        token_next() ;
        if (token.type == IDENTIFIER && token.code == identifier_semicolon) {
            continue ;
        }
        compile_error (MSG_EXPECTED, ";") ;
    }
}

void compile_process ()
{
    PROCDEF * proc ;
    VARIABLE  * var ;
    int is_declare = 0 ;
    int is_function = 0 ;
    int type_implicit = 1;
    int code, tcode, params ;
    BASETYPE type, typeb ;
    TYPEDEF ctype, ctypeb ;

    int signed_prefix = 0;
    int unsigned_prefix = 0;

    tcode = token.code ;

    if ( tcode == identifier_declare ) { /* Es una declaracion? */
        is_declare = 1;
        token_next() ;
        tcode = token.code;
    }

    if (tcode == identifier_function) { /* Es funcion? */
        is_function = 1;
    }

    if ((tcode == identifier_process || tcode == identifier_function)) { /* Si proceso o funcion, obtengo el signo */
        token_next() ;
        tcode = token.code;
    }

    if (token.code == identifier_signed) { /* signed */
        signed_prefix = 1;
        token_next();
        tcode = token.code;
    } else if (token.code == identifier_unsigned) { /* unsigned */
        unsigned_prefix = 1;
        token_next();
        tcode = token.code;
    }

    if (segment_by_name(token.code)) { /* Nombre del Segmento al que pertenece */
        tcode = identifier_pointer ;
        token_next() ;
    }

    if (identifier_is_basic_type(token.code)) { /* Salto identificador de tipo basico */
        tcode = token.code;
        token_next();
    }

    while (token.code == identifier_pointer || token.code == identifier_multiply) { /* Salto el indentificador POINTER */
        tcode = token.code ;
        token_next() ;
    }

    // Check if the process name is valid

    if (token.type != IDENTIFIER || token.code < reserved_words) {
        compile_error (MSG_PROCNAME_EXP) ;
    }
    code = token.code ;

    // Create the process if it is not defined already
    proc = procdef_search (code) ;
    if (!proc) {
        proc = procdef_new (procdef_getid(), code) ;
    } else if (proc->defined) {
        compile_error (MSG_PROC_ALREADY_DEFINED);
    }

    // Parse the process parameters

    token_next () ;
    if (token.type != IDENTIFIER || token.code != identifier_leftp) {
        compile_error (MSG_EXPECTED, "(") ;
    }

    if ( !is_declare )
        proc->defined = 1 ;

    if (is_function) {
        if (is_declare && proc->declared && !(proc->flags&PROC_FUNCTION)) {
            compile_error (MSG_PROTO_ERROR) ;
        }

        proc->flags |= PROC_FUNCTION;
    }

    if (tcode == identifier_float){
        if (is_declare && proc->declared && proc->type != TYPE_FLOAT) {
            compile_error (MSG_PROTO_ERROR) ;
        }
        proc->type = TYPE_FLOAT ;
    }

    if (tcode == identifier_string){
        if (is_declare && proc->declared && proc->type != TYPE_STRING)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = TYPE_STRING ;
    }

    if (tcode == identifier_word){
        if (is_declare && proc->declared && proc->type != signed_prefix ? TYPE_SHORT : TYPE_WORD)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = signed_prefix ? TYPE_SHORT : TYPE_WORD;
        signed_prefix = unsigned_prefix = 0;
    }

    if (tcode == identifier_dword){
        if (is_declare && proc->declared && proc->type != signed_prefix ? TYPE_INT : TYPE_DWORD)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = signed_prefix ? TYPE_INT : TYPE_DWORD;
        signed_prefix = unsigned_prefix = 0;
    }

    if (tcode == identifier_byte){
        if (is_declare && proc->declared && proc->type != signed_prefix ? TYPE_SBYTE : TYPE_BYTE)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = signed_prefix ? TYPE_SBYTE : TYPE_BYTE;
        signed_prefix = unsigned_prefix = 0;
    }

    if (tcode == identifier_int){
        if (is_declare && proc->declared && proc->type != unsigned_prefix ? TYPE_DWORD : TYPE_INT)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = unsigned_prefix ? TYPE_DWORD : TYPE_INT;
        signed_prefix = unsigned_prefix = 0;
    }

    if (tcode == identifier_short){
        if (is_declare && proc->declared && proc->type != unsigned_prefix ? TYPE_WORD : TYPE_SHORT)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = unsigned_prefix ? TYPE_WORD : TYPE_SHORT;
        signed_prefix = unsigned_prefix = 0;
    }

    if (tcode == identifier_char){
        if (is_declare && proc->declared && proc->type != TYPE_CHAR)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = TYPE_CHAR;
    }

    if (tcode == identifier_pointer || tcode == identifier_multiply){
        if (is_declare && proc->declared && proc->type != TYPE_POINTER)
            compile_error (MSG_PROTO_ERROR) ;
        proc->type = TYPE_POINTER ;
    }

    if (signed_prefix || unsigned_prefix){
        compile_error(MSG_INVALID_TYPE);
    }

    token_next() ;

    /* Recoge los parámetros y su tipo */

    params = 0 ;
    type = TYPE_INT;
    typeb = TYPE_INT;
    type_implicit = 1;
    ctype = typedef_new(type) ;
    ctypeb = ctype ;
    signed_prefix = unsigned_prefix = 0;
    while (token.type != IDENTIFIER || token.code != identifier_rightp)
    {
        type = typeb;
        ctype = ctypeb;

        /* Recogo signo del parametro */
        if (token.type == IDENTIFIER && token.code == identifier_unsigned){
            unsigned_prefix = 1;
            token_next();
        }else if (token.type == IDENTIFIER && token.code == identifier_signed){
            signed_prefix = 1;
            token_next();
        }

        /* Recogo tipo del parametro */
        if (token.type == IDENTIFIER && token.code == identifier_dword) {
            type_implicit = 0;
            type = signed_prefix ? TYPE_INT : TYPE_DWORD;
            unsigned_prefix = signed_prefix = 0;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_int) {
            type_implicit = 0;
            type = unsigned_prefix ? TYPE_DWORD : TYPE_INT;
            unsigned_prefix = signed_prefix = 0;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_word) {
            type_implicit = 0;
            type = signed_prefix ? TYPE_SHORT : TYPE_WORD ;
            unsigned_prefix = signed_prefix = 0;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_short) {
            type_implicit = 0;
            type = unsigned_prefix ? TYPE_WORD : TYPE_SHORT;
            unsigned_prefix = signed_prefix = 0;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_byte) {
            type_implicit = 0;
            type = signed_prefix ? TYPE_SBYTE : TYPE_BYTE ;
            unsigned_prefix = signed_prefix = 0;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_char) {
            type_implicit = 0;
            type = TYPE_CHAR ;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_string) {
            type_implicit = 0;
            type = TYPE_STRING ;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_float) {
            type_implicit = 0;
            type = TYPE_FLOAT ;
            ctype = typedef_new(type) ;
            token_next() ;
        } else if (token.type == IDENTIFIER && segment_by_name(token.code)) {
            type_implicit = 0;
            ctype = *typedef_by_name(token.code) ;
            type = TYPE_STRUCT ;
            token_next() ;
        }

        if (signed_prefix || unsigned_prefix)
        {
            compile_error(MSG_INVALID_TYPE);
            signed_prefix = unsigned_prefix = 0;
        }


        typeb = type;
        ctypeb = ctype;

        while (token.type == IDENTIFIER && (token.code == identifier_pointer || token.code == identifier_multiply))
        {
            type_implicit = 0;
            type = TYPE_POINTER ;
            ctype = typedef_pointer(ctype) ;
            token_next() ;
        }

        if (type == TYPE_STRUCT)
        {
            type_implicit = 0;
            type = TYPE_POINTER ;
            ctype = typedef_pointer(ctype) ;
        }

        if (token.type != IDENTIFIER || token.code < reserved_words)
            compile_error (MSG_INVALID_PARAM) ;

        /* Check if the process was used before declared */
        if (!proc->declared) {
            var = varspace_search (&local, token.code) ;
            if (var) {
                /* El parámetro es en realidad un local */
                if (type_implicit) {
                    type = typedef_base(var->type);
                    ctype = var->type;
                }
                if (typedef_base(var->type) != type) {
                    if (typedef_is_integer(var->type) && typedef_is_integer(typedef_new(type)))
                    {
                        /*
                            A parameter was used before the process is declared. The
                            data type declared is different from the data type used,
                            but both are integers. The error is ignored, but no
                            conversion is done. This can lead to type conversion issues.
                        */
                    } else
                        compile_error (MSG_INVALID_PARAMT) ;
                }
                codeblock_add (&proc->code, MN_LOCAL, var->offset) ;
                codeblock_add (&proc->code, MN_PRIVATE, proc->pridata->current) ;
                codeblock_add (&proc->code, MN_PTR, 0) ;

                if (typedef_base(var->type) == TYPE_STRING)
                    codeblock_add (&proc->code, MN_LET | MN_STRING, 0) ;
                else
                    codeblock_add (&proc->code, MN_LET, 0) ;

                codeblock_add (&proc->code, MN_POP, 0) ;

                if (proc->privars->reserved == proc->privars->count)
                    varspace_alloc (proc->privars, 16) ;

                proc->privars->vars[proc->privars->count].type   = typedef_new (TYPE_DWORD);
                proc->privars->vars[proc->privars->count].offset = proc->pridata->current ;
                proc->privars->vars[proc->privars->count].code   = -1 ;

                proc->privars->count++ ;

                segment_add_dword (proc->pridata, 0) ;
            } else {
                var = varspace_search (&global, token.code);
                if (var)
                {
                    /* El parámetro es en realidad un global */
                    if (type_implicit)
                    {
                        type = typedef_base(var->type);
                        ctype = var->type;
                    }
                    if (typedef_base(var->type) != type)
                        compile_error (MSG_INVALID_PARAMT) ;

                    codeblock_add (&proc->code, MN_GLOBAL, var->offset) ;
                    codeblock_add (&proc->code, MN_PRIVATE, proc->pridata->current) ;
                    codeblock_add (&proc->code, MN_PTR, 0) ;

                    if (typedef_base(var->type) == TYPE_STRING)
                        codeblock_add (&proc->code, MN_LET | MN_STRING, 0) ;
                    else
                        codeblock_add (&proc->code, MN_LET, 0) ;

                    codeblock_add (&proc->code, MN_POP, 0) ;

                    if (proc->privars->reserved == proc->privars->count)
                        varspace_alloc (proc->privars, 16) ;

                    proc->privars->vars[proc->privars->count].type   = typedef_new (TYPE_DWORD);
                    proc->privars->vars[proc->privars->count].offset = proc->pridata->current ;
                    proc->privars->vars[proc->privars->count].code   = -1 ;

                    proc->privars->count++ ;

                    segment_add_dword (proc->pridata, 0) ;
                }
                else
                {
                    /* Crear la variable privada */
                    if (proc->privars->reserved == proc->privars->count)
                        varspace_alloc (proc->privars, 16) ;
                    if (type == TYPE_STRING)
                        varspace_varstring (proc->privars, proc->pridata->current) ;
                    proc->privars->vars[proc->privars->count].type   = ctype;
                    proc->privars->vars[proc->privars->count].offset = proc->pridata->current ;
                    proc->privars->vars[proc->privars->count].code   = token.code ;
                    proc->privars->count++ ;
                    segment_add_dword (proc->pridata, 0) ;
                }
            }
        }

        if (proc->declared && proc->paramtype[params] != type)
            compile_error (MSG_PROTO_ERROR) ;

        if (proc->params != -1)
        {
            /* El proceso fue usado previamente */

            if (proc->paramtype[params] == TYPE_UNDEFINED) {
                proc->paramtype[params] = type ;
            } else if ((proc->paramtype[params] == TYPE_DWORD || proc->paramtype[params] == TYPE_INT) &&
                         (type == TYPE_DWORD ||
                          type == TYPE_INT   ||
                          type == TYPE_BYTE  ||
                          type == TYPE_WORD  ||
                          type == TYPE_SHORT ||
                          type == TYPE_SBYTE
                         )) {
                proc->paramtype[params] = type ;
            } else if (type == TYPE_DWORD && (proc->paramtype[params] == TYPE_BYTE || proc->paramtype[params] == TYPE_WORD)) {
                proc->paramtype[params] = type ;
            } else if (proc->paramtype[params] != type) {
                compile_error (MSG_INVALID_PARAMT) ;
            }
        } else {
            proc->paramtype[params] = type;
        }
        params++ ;

        if (params == MAX_PARAMS)
            compile_error (MSG_TOO_MANY_PARAMS) ;

        token_next() ;
        if (token.type == IDENTIFIER && token.code == identifier_comma)
            token_next() ;
    } /* END while (token.type != IDENTIFIER || token.code != identifier_rightp) */

    if (proc->params == -1) {
        proc->params = params ;
    } else if (proc->params != params) {
        compile_error (MSG_INCORRECT_PARAMC, identifier_name(code), proc->params) ;
    }
    token_next () ;

    if (token.type == IDENTIFIER && token.code == identifier_semicolon)
        token_next () ;

    /* Se admite una sección interna de datos locales; sin embargo,
       los datos declarados aquí tienen el mismo efecto que si son
       declarados externamente y afectarán a todos los procesos (Ya no va mas esto, ahora los datos locales son locales, Splinter) */

    if (!proc->declared) {
        while ( token.type == IDENTIFIER && ( token.code == identifier_local  ||
                                              token.code == identifier_public ||
                                              token.code == identifier_private ) ) {
            if ( token.code == identifier_local || token.code == identifier_public )
            {
                /* (2006/11/19 19:34 GMT-03:00, Splinter - jj_arg@yahoo.com) */
                /* Ahora las declaraciones locales, son solo locales al proceso, pero visibles desde todo proceso */
                /* Se permite declarar local/publica una variable que haya sido declarada global, es una variable propia, no es la global */
                VARSPACE * v[] = { &local, proc->privars, NULL };
                compile_varspace ( proc->pubvars, proc->pubdata, 1, 1, 0, v, DEFAULT_ALIGNMENT ) ;
            } else if ( token.code == identifier_private ) {
                /* (2006/11/19 19:34 GMT-03:00, Splinter - jj_arg@yahoo.com) */
                /* Se permite declarar privada una variable que haya sido declarada global, es una variable propia, no es la global */
                VARSPACE * v[] = { &local, proc->pubvars, NULL };
                compile_varspace ( proc->privars, proc->pridata, 1, 1, 0, v, DEFAULT_ALIGNMENT ) ;
            }

            token_next () ;
        }
    }

    /* Gestiona procesos cuyos parámetros son variables locales */

    if (!is_declare) {
        if (token.type != IDENTIFIER || token.code != identifier_begin) {
            compile_error (MSG_NO_BEGIN) ;
        }

        compile_block (proc) ;

        if (token.type == IDENTIFIER && token.code == identifier_else) {
            compile_error (MSG_ELSE_WOUT_IF) ;
        }
    }

    if (token.type != IDENTIFIER || token.code != identifier_end) {
        compile_error (MSG_NO_END) ;
    }

    if (!is_declare) {
        codeblock_add (&proc->code, MN_END, 0) ;

        if (debug)
        {
            printf ("\n\n---------- Process %d (%s)\n\n", proc->typeid, identifier_name(code)) ;

            if ( proc->privars->count ) {
                printf ("---- Private variables\n") ;
                varspace_dump (proc->privars, 0) ;
                printf ("\n") ;
            }

            if ( proc->pubvars->count ) {
                printf ("---- Public variables\n") ;
                varspace_dump (proc->pubvars, 0) ;
                printf ("\n") ;
            }

            //segment_dump  (proc->pridata) ;
            codeblock_dump (&proc->code) ;
        }
    }

    proc->declared = 1 ;

}

void compile_program ()
{
    int code ;

    /* Ahora lo del program es opcional :-P */

    token_next() ;
    if (token.type == IDENTIFIER && token.code == identifier_program)
    {
        token_next() ;
        if (token.type != IDENTIFIER || token.code < reserved_words) {
            compile_error (MSG_PROGRAM_NAME_EXP) ;
        }
        token_next() ;
        if (token.type != IDENTIFIER || token.code != identifier_semicolon) {
            compile_error (MSG_EXPECTED, ";") ;
        }
    }
    else {
        token_back() ;
    }

    mainproc = procdef_new(procdef_getid(), identifier_search_or_add("MAIN")) ;

    for (;;)
    {
        token_next () ;
        while (token.type == IDENTIFIER && token.code == identifier_semicolon) {
            token_next() ;
        }

        if (token.type == IDENTIFIER && token.code == identifier_import) {
            compile_import() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_const) {
            compile_constants() ;
        } else if (token.type == IDENTIFIER && token.code == identifier_local) {
            /* (2006/11/19 19:34 GMT-03:00, Splinter - jj_arg@yahoo.com) */
            VARSPACE * v[] = { &global, NULL };
            compile_varspace ( &local, localdata, 1, 1, 0, v, DEFAULT_ALIGNMENT ) ;
        } else if (token.type == IDENTIFIER && token.code == identifier_global) {
            /* (2006/11/19 19:34 GMT-03:00, Splinter - jj_arg@yahoo.com) */
            VARSPACE * v[] = { &local, NULL };
            compile_varspace ( &global, globaldata, 1, 1, 0, v, DEFAULT_ALIGNMENT ) ;
        } else if (token.type == IDENTIFIER && token.code == identifier_private) {
            /* (2006/11/19 19:34 GMT-03:00, Splinter - jj_arg@yahoo.com) */
            VARSPACE * v[] = { &local, &global, NULL };
            compile_varspace ( mainproc->privars, mainproc->pridata, 1, 1, 0, v, DEFAULT_ALIGNMENT ) ;
        } else if (token.type == IDENTIFIER && token.code == identifier_begin) {
            if (mainproc->defined) {
                /* Hack para poder redefinir el proceso principal */
                mainproc->code.current -= 1 ;
            }
            mainproc->defined = 1 ;
            compile_block (mainproc) ;
            if (token.type == IDENTIFIER && token.code == identifier_else) {
                compile_error (MSG_ELSE_WOUT_IF) ;
            }
            if (token.type != IDENTIFIER || token.code != identifier_end) {
                compile_error (MSG_NO_END) ;
            }
            codeblock_add (&mainproc->code, MN_END, 0) ;
        } else if (token.type == IDENTIFIER && token.code == identifier_type) { /* Tipo de dato definido por el usuario */
            segment  * s = segment_new() ;
            VARSPACE * v = varspace_new() ;
            TYPEDEF    t = typedef_new(TYPE_STRUCT);

            t.chunk[0].count = 1 ;

            token_next() ;
            if ((code = token.code) < reserved_words || token.type != IDENTIFIER) {
                compile_error (MSG_INVALID_TYPE) ;
            }

            t.varspace = v ;
            typedef_name (t, code) ;
            segment_name (s, code) ;

            /* (2006/11/19 19:34 GMT-03:00, Splinter - jj_arg@yahoo.com) */
            compile_varspace (v, s, 0, 1, 0, NULL, 0) ;
            if (token.code != identifier_end) {
                compile_error (MSG_NO_END) ;
            }
        } else if (token.type == IDENTIFIER &&
                                    (token.code == identifier_process  ||
                                     token.code == identifier_function ||
                                     token.code == identifier_declare  ||
                                     identifier_is_basic_type(token.type))) { /* Definición de proceso */
            compile_process() ;

        } else if (segment_by_name(token.code)) {
            compile_process() ;

        } else {
            break ;
        }
    }

    if (debug)
    {
        printf ("\n----- Main procedure\n\n") ;
        varspace_dump (mainproc->privars, 0) ;
        //segment_dump  (mainproc->pridata) ;
        printf ("\n");
        codeblock_dump (&mainproc->code) ;
        printf ("\n") ;
    }

    if (global.count && debug)
    {
        printf ("\n---- Global variables\n\n") ;
        varspace_dump (&global, 0) ;
    }

    if (local.count && debug)
    {
        printf ("\n---- Local variables\n\n") ;
        varspace_dump (&local, 0) ;
        //segment_dump (localdata) ;
    }

    if (token.type != NOTOKEN) {
        compile_error (MSG_UNEXPECTED_TOKEN) ;
    }

    program_postprocess() ;

    if (!mainproc->defined) {
        compile_error (MSG_NO_MAIN) ;
    }

#ifdef DEBUG_VERBOSE
    identifier_dump() ;
    string_dump() ;
#endif
}

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