833 lines
17 KiB
C
833 lines
17 KiB
C
/***************************************************************************
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header.c
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Analyzing class description
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(c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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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. See the
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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 the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#define _TRANS_HEADER_C
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "gb_common.h"
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#include "gb_error.h"
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#include "gb_str.h"
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#include "gb_file.h"
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#include "gb_table.h"
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#include "gbc_compile.h"
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#include "gbc_trans.h"
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#include "gbc_header.h"
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/*#define DEBUG*/
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static char *get_num_desc(int num)
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{
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static char *num_desc[3] = { "first", "second", "third" };
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static char desc[6];
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if (num < 1)
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return NULL;
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if (num < 4)
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return num_desc[num - 1];
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sprintf(desc, "%dth", num);
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return desc;
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}
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static void analyze_function_desc(TRANS_FUNC *func, int flag)
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{
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PATTERN *look = JOB->current;
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TRANS_PARAM *param;
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bool is_output;
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bool is_optional = FALSE;
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TRANS_DECL ttyp;
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if (!PATTERN_is_identifier(*look))
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THROW("Syntax error. Invalid identifier in function name");
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func->index = PATTERN_index(*look);
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look++;
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if (flag & HF_EVENT)
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TABLE_copy_symbol_with_prefix(JOB->class->table, func->index, ':', NULL, &func->index);
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func->nparam = 0;
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func->vararg = FALSE;
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if ((flag & HF_VOID) && PATTERN_is_newline(*look))
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{
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JOB->current = ++look;
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return;
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}
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if (!PATTERN_is(*look, RS_LBRA))
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THROW(E_UNEXPECTED, READ_get_pattern(look));
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look++;
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for(;;)
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{
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param = &func->param[func->nparam];
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if (PATTERN_is(*look, RS_RBRA))
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{
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look++;
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break;
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}
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if (func->nparam > 0)
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{
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if (!PATTERN_is(*look, RS_COMMA))
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THROW("Syntax error. Missing ',' or ')'");
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look++;
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}
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if (PATTERN_is(*look, RS_3PTS))
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{
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look++;
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if (!PATTERN_is(*look, RS_RBRA))
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THROW("Syntax error. '...' must be the last parameter"); //, get_num_desc(func->nparam + 1));
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look++;
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func->vararg = TRUE;
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break;
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}
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is_output = FALSE;
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/* Pas de param<61>re en sortie pour l'instant !
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if (PATTERN_is(*look, RS_AT))
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{
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is_output = TRUE;
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look++;
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}
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*/
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if (!(flag & HF_NO_OPT))
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{
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if (PATTERN_is(*look, RS_OPTIONAL))
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{
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look++;
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is_optional = TRUE;
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}
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}
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if (!PATTERN_is_identifier(*look))
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THROW("Syntax error. The &1 parameter is not a valid identifier", get_num_desc(func->nparam + 1));
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param->index = PATTERN_index(*look);
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look++;
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JOB->current = look;
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if (!TRANS_type(TT_NOTHING, &ttyp))
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THROW("Syntax error. Invalid type description of &1 parameter", get_num_desc(func->nparam + 1));
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param->type = ttyp.type;
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/*
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if (is_output)
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TYPE_set_flag(¶m->type, TF_OUTPUT);
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*/
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look = JOB->current;
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if (is_optional)
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{
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param->optional = look;
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for(;;)
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{
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if (PATTERN_is(*look, RS_COMMA) || PATTERN_is(*look, RS_RBRA) || PATTERN_is_newline(*look))
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break;
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look++;
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}
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JOB->current = look;
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}
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func->nparam++;
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}
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JOB->current = look;
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}
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static void header_module_type(void)
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{
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const char *ext;
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/*JOB->class->name = STR_copy(FILE_get_name(JOB->name));*/
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ext = FILE_get_ext(JOB->name);
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if (strcasecmp(ext, "module") == 0)
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{
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JOB->is_module = TRUE;
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JOB->is_form = FALSE;
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}
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else if (strcasecmp(ext, "class") == 0)
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{
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JOB->is_module = FALSE;
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JOB->is_form = FALSE;
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}
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else if (strcasecmp(ext, "form") == 0)
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{
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JOB->is_module = FALSE;
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JOB->is_form = TRUE;
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}
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else
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THROW("Unknown file extension");
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JOB->declared = TRUE;
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}
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static bool header_event(TRANS_EVENT *event)
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{
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PATTERN *look = JOB->current;
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TRANS_DECL ttyp;
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if (!PATTERN_is(*look, RS_EVENT))
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return FALSE;
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CLEAR(event);
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if (JOB->is_module)
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THROW("A module cannot raise events");
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JOB->current++;
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analyze_function_desc((TRANS_FUNC *)event, HF_VOID);
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if (PATTERN_is(*JOB->current, RS_AS))
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{
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if (!TRANS_type(TT_CAN_SQUARE, &ttyp))
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THROW("Syntax error in return type");
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event->type = ttyp.type;
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}
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TYPE_set_kind(&event->type, TK_EVENT);
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TYPE_set_flag(&event->type, TF_PUBLIC);
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return TRUE;
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}
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static bool header_property(TRANS_PROPERTY *prop)
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{
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TRANS_DECL ptype;
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PATTERN *look = JOB->current;
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bool is_static = FALSE;
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bool is_public = TRUE;
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CLEAR(prop);
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/* static */
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if (JOB->is_module)
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{
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is_static = TRUE;
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}
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else if (PATTERN_is(*look, RS_STATIC))
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{
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is_static = TRUE;
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look++;
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}
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/* public */
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if (PATTERN_is(*look, RS_PUBLIC) || PATTERN_is(*look, RS_PRIVATE))
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{
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is_public = PATTERN_is(*look, RS_PUBLIC);
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look++;
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}
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if (!PATTERN_is(*look, RS_PROPERTY))
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return FALSE;
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look++;
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JOB->current = look;
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if (!is_public)
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THROW("A property must be public");
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/* read-only property */
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if (PATTERN_is(*JOB->current, RS_READ))
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{
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prop->read = TRUE;
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JOB->current++;
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}
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else
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prop->read = FALSE;
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/* property name */
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if (!PATTERN_is_identifier(*JOB->current))
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THROW("Syntax error. Invalid identifier in property name");
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prop->index = PATTERN_index(*JOB->current);
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JOB->current++;
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if (!TRANS_type(TT_CAN_SQUARE, &ptype))
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THROW("Syntax error. Bad property type");
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prop->type = ptype.type;
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prop->line = JOB->line;
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TYPE_set_kind(&prop->type, TK_PROPERTY);
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if (is_static)
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TYPE_set_flag(&prop->type, TF_STATIC);
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TYPE_set_flag(&prop->type, TF_PUBLIC);
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if (PATTERN_is_string(*JOB->current))
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{
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prop->comment = PATTERN_index(*JOB->current);
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JOB->current++;
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}
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else
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prop->comment = NO_SYMBOL;
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return TRUE;
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}
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static bool header_extern(TRANS_EXTERN *trans)
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{
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PATTERN *look = JOB->current;
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TRANS_DECL ttyp;
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int index;
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bool is_public;
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/* public ? */
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is_public = JOB->is_module && JOB->public_module;
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if (PATTERN_is(*look, RS_PUBLIC))
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{
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is_public = TRUE;
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look++;
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}
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else if (PATTERN_is(*look, RS_PRIVATE))
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{
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is_public = FALSE;
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look++;
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}
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if (!PATTERN_is(*look, RS_EXTERN))
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return FALSE;
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look++;
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CLEAR(trans);
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JOB->current = look;
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analyze_function_desc((TRANS_FUNC *)trans, HF_NO_3PTS);
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if (PATTERN_is(*JOB->current, RS_AS))
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{
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if (!TRANS_type(TT_CAN_SQUARE, &ttyp))
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THROW("Syntax error in return type");
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trans->type = ttyp.type;
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}
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if (TRANS_is(RS_IN))
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{
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if (!PATTERN_is_string(*JOB->current))
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THROW("Library name must be a string");
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index = PATTERN_index(*JOB->current);
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JOB->current++;
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}
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else
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{
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if (JOB->default_library == NO_SYMBOL)
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THROW("IN missing");
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index = JOB->default_library;
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}
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trans->library = index;
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if (TRANS_is(RS_EXEC))
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{
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if (!PATTERN_is_string(*JOB->current))
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THROW("Alias name must be a string");
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trans->alias = PATTERN_index(*JOB->current);
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JOB->current++;
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}
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else
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trans->alias = NO_SYMBOL;
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TYPE_set_kind(&trans->type, TK_EXTERN);
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TYPE_set_flag(&trans->type, TF_STATIC);
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if (is_public) TYPE_set_flag(&trans->type, TF_PUBLIC);
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return TRUE;
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}
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static bool header_class(TRANS_DECL *decl)
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{
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if (!PATTERN_is(*JOB->current, RS_CLASS))
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return FALSE;
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JOB->current++;
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if (!PATTERN_is_identifier(*JOB->current))
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THROW("Syntax error. CLASS needs an identifier");
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CLEAR(decl);
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decl->index = PATTERN_index(*JOB->current);
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JOB->current++;
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return TRUE;
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}
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static bool header_declaration(TRANS_DECL *decl)
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{
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PATTERN *look = JOB->current;
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PATTERN *save;
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bool is_static = FALSE;
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bool is_public = FALSE;
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bool is_const = FALSE;
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/*bool other = FALSE;*/
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/* static ! */
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if (JOB->is_module)
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{
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is_static = TRUE;
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}
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else if (PATTERN_is(*look, RS_STATIC))
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{
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is_static = TRUE;
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look++;
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}
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/* public or private ? */
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is_public = JOB->is_module && JOB->public_module;
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if (PATTERN_is(*look, RS_PUBLIC))
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{
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is_public = TRUE;
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look++;
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}
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else if (PATTERN_is(*look, RS_PRIVATE))
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{
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is_public = FALSE;
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look++;
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}
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/* const ? */
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is_const = FALSE;
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if (PATTERN_is(*look, RS_CONST))
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{
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/* static const <=> const */
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/*
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if (is_static)
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return FALSE;
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*/
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is_const = TRUE;
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look++;
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}
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if (!PATTERN_is_identifier(*look))
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return FALSE;
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CLEAR(decl);
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decl->index = PATTERN_index(*look);
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look++;
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save = JOB->current;
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JOB->current = look;
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if (!TRANS_type(((!is_const && !is_public) ? (TT_CAN_SQUARE | TT_CAN_ARRAY) : 0) | TT_CAN_NEW, decl))
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{
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JOB->current = save;
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return FALSE;
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}
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if (is_static) TYPE_set_flag(&decl->type, TF_STATIC);
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if (is_public) TYPE_set_flag(&decl->type, TF_PUBLIC);
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if (is_const)
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TYPE_set_kind(&decl->type, TK_CONST);
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else
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TYPE_set_kind(&decl->type, TK_VARIABLE);
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if (is_const)
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{
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if (!decl->init)
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THROW("Syntax error. Missing '='");
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JOB->current = decl->init;
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JOB->current = TRANS_get_constant_value(decl, JOB->current);
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}
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//JOB->current = look;
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return TRUE;
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}
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static bool header_function(TRANS_FUNC *func)
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{
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static HEADER_SPECIAL spec[] =
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{
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{ "_init", HS_PUBLIC + HS_STATIC + HS_PROCEDURE + HS_NOPARAM },
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{ "_exit", HS_PUBLIC + HS_STATIC + HS_PROCEDURE + HS_NOPARAM},
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{ "_new", HS_PUBLIC + HS_DYNAMIC + HS_PROCEDURE },
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{ "_free", HS_PUBLIC + HS_DYNAMIC + HS_PROCEDURE + HS_NOPARAM },
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{ "_call", HS_PUBLIC },
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{ "_get", HS_PUBLIC + HS_FUNCTION },
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{ "_put", HS_PUBLIC + HS_PROCEDURE + HS_PUT },
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{ "_next", HS_PUBLIC + HS_NOPARAM },
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{ "_unknown", HS_PUBLIC + HS_UNKNOWN },
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{ "_compare", HS_PUBLIC + HS_DYNAMIC + HS_FUNCTION + HS_COMPARE },
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{ NULL, 0 }
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};
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PATTERN *look = JOB->current;
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PATTERN pat;
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TRANS_DECL ttyp;
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SYMBOL *sym;
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HEADER_SPECIAL *hsp;
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bool is_proc = FALSE;
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bool is_static = FALSE;
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bool is_public = FALSE;
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/* static ? */
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if (JOB->is_module)
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{
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is_static = TRUE;
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}
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else if (PATTERN_is(*look, RS_STATIC))
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{
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is_static = TRUE;
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look++;
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}
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/* public ou static ? */
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is_public = JOB->is_module && JOB->public_module;
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if (PATTERN_is(*look, RS_PUBLIC))
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{
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is_public = TRUE;
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look++;
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}
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else if (PATTERN_is(*look, RS_PRIVATE))
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{
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is_public = FALSE;
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look++;
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}
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if (PATTERN_is(*look, RS_PROCEDURE) || PATTERN_is(*look, RS_SUB))
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is_proc = TRUE;
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else if (!PATTERN_is(*look, RS_FUNCTION))
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return FALSE;
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look++;
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CLEAR(func);
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JOB->current = look;
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analyze_function_desc(func, HF_NORMAL);
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//if (!is_proc)
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if (PATTERN_is(*JOB->current, RS_AS))
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{
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if (!TRANS_type(TT_CAN_SQUARE, &ttyp))
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THROW("Syntax error. Invalid return type");
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func->type = ttyp.type;
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is_proc = FALSE;
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}
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TYPE_set_kind(&func->type, TK_FUNCTION);
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if (is_static) TYPE_set_flag(&func->type, TF_STATIC);
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if (is_public) TYPE_set_flag(&func->type, TF_PUBLIC);
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/* On v<>ifie les m<>hodes sp<73>iales */
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sym = TABLE_get_symbol(JOB->class->table, func->index);
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if (*sym->name == '_')
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{
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for (hsp = spec; hsp->name; hsp++)
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{
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if (sym->len != strlen(hsp->name))
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continue;
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if (strncmp(sym->name, hsp->name, sym->len))
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continue;
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if (hsp->flag == HS_ERROR)
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THROW("The special method &1 cannot be implemented", hsp->name);
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if ((hsp->flag & HS_PUBLIC) && !is_public)
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THROW("The special method &1 must be public", hsp->name);
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if ((hsp->flag & HS_STATIC) && !is_static)
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THROW("The special method &1 must be static", hsp->name);
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if ((hsp->flag & HS_DYNAMIC) && is_static)
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THROW("The special method &1 cannot be static", hsp->name);
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if ((hsp->flag & HS_PROCEDURE) && !is_proc)
|
||
THROW("The special method &1 cannot be a function", hsp->name);
|
||
|
||
if ((hsp->flag & HS_FUNCTION) && is_proc)
|
||
THROW("The special method &1 must be a function", hsp->name);
|
||
|
||
if ((hsp->flag & HS_NOPARAM) && func->nparam > 0)
|
||
THROW("The special method &1 takes no arguments", hsp->name);
|
||
|
||
if (hsp->flag & HS_PUT)
|
||
{
|
||
if (func->nparam < 1)
|
||
THROW("The special method &1 must take at least one argument", hsp->name);
|
||
}
|
||
|
||
if (hsp->flag & HS_UNKNOWN)
|
||
{
|
||
if (func->nparam > 0 || !func->vararg)
|
||
THROW("The special method &1 must take a variable number of arguments only", hsp->name);
|
||
}
|
||
|
||
if (hsp->flag & HS_COMPARE)
|
||
{
|
||
if (func->type.t.id != T_INTEGER)
|
||
THROW("The special method must return an integer");
|
||
if (func->nparam != 1)
|
||
THROW("The special method must take exactly one argument");
|
||
|
||
}
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
/* on saute le corps de la fonction */
|
||
|
||
if (!PATTERN_is_newline(*(JOB->current)))
|
||
THROW("Syntax error after function declaration");
|
||
|
||
func->line = PATTERN_index(*(JOB->current)) + 1; /* <20> commence <20>la ligne suivante ! */
|
||
func->start = JOB->current + 1;
|
||
|
||
for(;;)
|
||
{
|
||
pat = *JOB->current;
|
||
if (PATTERN_is_end(pat))
|
||
{
|
||
THROW("Missing END");
|
||
}
|
||
|
||
if (PATTERN_is_newline(pat))
|
||
if (PATTERN_is(JOB->current[1], RS_END))
|
||
{
|
||
if (PATTERN_is_newline(JOB->current[2]))
|
||
{
|
||
JOB->current += 2;
|
||
break;
|
||
}
|
||
if (TRANS_is_end_function(is_proc, &JOB->current[2]))
|
||
{
|
||
JOB->current += 3;
|
||
break;
|
||
}
|
||
}
|
||
|
||
JOB->current++;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
static bool header_inherits(void)
|
||
{
|
||
int index;
|
||
|
||
if (!PATTERN_is(*JOB->current, RS_INHERITS))
|
||
return FALSE;
|
||
|
||
/*{
|
||
if (!(PATTERN_is(JOB->current[0], RS_CLASS)
|
||
&& PATTERN_is(JOB->current[1], RS_INHERITS)))
|
||
return FALSE;
|
||
JOB->current++;
|
||
}*/
|
||
|
||
JOB->current++;
|
||
|
||
if (!PATTERN_is_class(*JOB->current))
|
||
THROW("Syntax error. INHERITS needs a class name");
|
||
|
||
if (JOB->class->parent != NO_SYMBOL)
|
||
THROW("Cannot inherit twice");
|
||
|
||
index = PATTERN_index(*JOB->current);
|
||
|
||
JOB->class->parent = CLASS_add_class(JOB->class, index);
|
||
/*printf("JOB->class->parent = %d\n", JOB->class->parent);*/
|
||
|
||
JOB->current++;
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
static bool header_option(void)
|
||
{
|
||
if (PATTERN_is(JOB->current[0], RS_EXPORT))
|
||
{
|
||
JOB->current++;
|
||
JOB->class->exported = TRUE;
|
||
|
||
if (PATTERN_is(JOB->current[0], RS_OPTIONAL))
|
||
{
|
||
JOB->current++;
|
||
JOB->class->optional = TRUE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
if (PATTERN_is(JOB->current[0], RS_CREATE))
|
||
{
|
||
JOB->current++;
|
||
|
||
if (PATTERN_is_newline(JOB->current[0]) || PATTERN_is(JOB->current[0], RS_STATIC))
|
||
{
|
||
JOB->class->autocreate = TRUE;
|
||
if (PATTERN_is(JOB->current[0], RS_STATIC))
|
||
JOB->current++;
|
||
return TRUE;
|
||
}
|
||
else if (PATTERN_is(JOB->current[0], RS_PRIVATE))
|
||
{
|
||
JOB->class->nocreate = TRUE;
|
||
JOB->current++;
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static bool header_library(void)
|
||
{
|
||
if (!TRANS_is(RS_LIBRARY))
|
||
return FALSE;
|
||
|
||
if (!PATTERN_is_string(*JOB->current))
|
||
THROW("Library name must be a string");
|
||
|
||
JOB->default_library = PATTERN_index(*JOB->current);
|
||
JOB->current++;
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
PUBLIC void HEADER_do(void)
|
||
{
|
||
union {
|
||
TRANS_DECL decl;
|
||
TRANS_FUNC func;
|
||
TRANS_EVENT event;
|
||
TRANS_EXTERN ext;
|
||
TRANS_PROPERTY prop;
|
||
} trans;
|
||
|
||
TRANS_reset();
|
||
|
||
header_module_type();
|
||
|
||
while (JOB->current < JOB->end)
|
||
{
|
||
if (PATTERN_is_end(*JOB->current))
|
||
break;
|
||
|
||
if (TRANS_newline())
|
||
continue;
|
||
|
||
if (header_function(&trans.func))
|
||
{
|
||
CLASS_add_function(JOB->class, &trans.func);
|
||
continue;
|
||
}
|
||
|
||
if (header_event(&trans.event))
|
||
{
|
||
CLASS_add_event(JOB->class, &trans.event);
|
||
continue;
|
||
}
|
||
|
||
if (header_property(&trans.prop))
|
||
{
|
||
CLASS_add_property(JOB->class, &trans.prop);
|
||
continue;
|
||
}
|
||
|
||
if (header_extern(&trans.ext))
|
||
{
|
||
CLASS_add_extern(JOB->class, &trans.ext);
|
||
continue;
|
||
}
|
||
|
||
if (header_declaration(&trans.decl))
|
||
{
|
||
CLASS_add_declaration(JOB->class, &trans.decl);
|
||
continue;
|
||
}
|
||
|
||
if (header_class(&trans.decl))
|
||
{
|
||
CLASS_add_class(JOB->class, trans.decl.index);
|
||
continue;
|
||
}
|
||
|
||
if (header_inherits())
|
||
continue;
|
||
|
||
if (header_option())
|
||
continue;
|
||
|
||
if (header_library())
|
||
continue;
|
||
|
||
THROW(E_UNEXPECTED, READ_get_pattern(JOB->current));
|
||
}
|
||
|
||
/* R<>rganisation des variables statiques et dynamiques
|
||
pour <20>iter les probl<62>es d'alignement
|
||
*/
|
||
|
||
CLASS_sort_declaration(JOB->class);
|
||
|
||
if (JOB->verbose)
|
||
CLASS_dump();
|
||
}
|