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/*
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Crown Copyright (c) 1997
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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/*** c-output.c --- Output routines.
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*
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** Author: Steve Folkes <smf@hermes.mod.uk>
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*
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*** Commentary:
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*
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* This file implements the SID output routines.
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*
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*** Change Log:
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* $Log: c-output.c,v $
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* Revision 1.1.1.1 1998/01/17 15:57:43 release
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* First version to be checked into rolling release.
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*
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* Revision 1.6 1996/03/01 09:53:17 smf
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* c-code.c, c-out-info.c, c-out-info.h, c-output.c:
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* - improved unreachable code analysis;
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* - improved some output formatting;
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* - added support for comment or macro to mark unreachable code.
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*
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* Revision 1.5 1996/02/28 15:52:05 smf
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* Fixed a bug that occured when a rule with a single alternative and an
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* exception handler was inlined into another rule. The bug caused the inner
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* rule's exception handler to handle any exceptions that occur in the enclosing
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* rule.
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*
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* Revision 1.4 1994/12/23 09:44:47 smf
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* Fixing "CR94_227.sid-exception-optimisation-bug" - corrected exception
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* terminal checking.
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*
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* Revision 1.3 1994/12/15 09:56:43 smf
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* Brought into line with OSSG C Coding Standards Document, as per
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* "CR94_178.sid+tld-update".
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*
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* Revision 1.2 1994/11/11 11:42:32 smf
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* Fixed the number of the error terminal, as it was one higher than necessary.
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*
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* Revision 1.1.1.1 1994/07/25 16:04:20 smf
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* Initial import of SID 1.8 non shared files.
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*
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**/
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/****************************************************************************/
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#include "c-output.h"
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#include "action.h"
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#include "basic.h"
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#include "c-code.h"
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#include "c-out-key.h"
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#include "c-out-nl.h"
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#include "c-out-types.h"
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#include "dstring.h"
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#include "gen-errors.h"
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#include "output.h"
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#include "name.h"
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#include "rstack.h"
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#include "rule.h"
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#include "type.h"
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/*--------------------------------------------------------------------------*/
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typedef struct COutClosureT {
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COutputInfoP info;
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TableP table;
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EntryP predicate_id;
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EntryP predicate_type;
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unsigned error_terminal;
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} COutClosureT, *COutClosureP;
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/*--------------------------------------------------------------------------*/
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static unsigned out_current_label;
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/*--------------------------------------------------------------------------*/
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static void
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c_output_indent PROTO_N ((info, indent))
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PROTO_T (COutputInfoP info X
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unsigned indent)
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{
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output_indent (c_out_info_info (info), indent);
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}
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#ifdef FS_FAST
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#define c_output_indent(info, indent) \
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output_indent (c_out_info_info (info), indent)
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#endif /* defined (FS_FAST) */
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static void
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c_output_identification PROTO_N ((info))
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PROTO_T (COutputInfoP info)
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{
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OStreamP ostream = c_out_info_ostream (info);
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write_cstring (ostream, "/*");
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write_newline (ostream);
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write_cstring (ostream, " * Automatically generated from the files:");
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write_newline (ostream);
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write_cstring (ostream, " *\t");
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write_cstring (ostream, c_out_info_source_name (info));
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write_newline (ostream);
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write_cstring (ostream, " * and");
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write_newline (ostream);
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write_cstring (ostream, " *\t");
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write_cstring (ostream, c_out_info_c_source_name (info));
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write_newline (ostream);
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write_cstring (ostream, " * by:");
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write_newline (ostream);
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write_cstring (ostream, " *\t");
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write_cstring (ostream, c_out_info_program_name (info));
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write_newline (ostream);
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write_cstring (ostream, " */");
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write_newline (ostream);
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write_newline (ostream);
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}
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static void
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c_output_declaration_1 PROTO_N ((info, rule))
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PROTO_T (COutputInfoP info X
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RuleP rule)
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{
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OStreamP ostream = c_out_info_ostream (info);
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EntryP entry = rule_entry (rule);
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if (rule_is_required (rule)) {
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write_cstring (ostream, "extern void ");
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} else if (rule_needs_function (rule)) {
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if (c_out_info_get_split (info) != 0) {
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write_cstring (ostream, "extern void ");
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} else {
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write_cstring (ostream, "static void ");
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}
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} else {
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return;
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}
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c_output_mapped_key (info, entry);
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write_char (ostream, ' ');
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c_output_type_decl (info, rule_param (rule), rule_result (rule));
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write_char (ostream, ';');
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write_newline (ostream);
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}
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static void
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c_output_declaration PROTO_N ((entry, gclosure))
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PROTO_T (EntryP entry X
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GenericP gclosure)
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{
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if (entry_is_rule (entry)) {
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RuleP rule = entry_get_rule (entry);
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COutputInfoP info = (COutputInfoP) gclosure;
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c_output_declaration_1 (info, rule);
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}
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}
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static void
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c_output_ext_declaration_1 PROTO_N ((info, rule))
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PROTO_T (COutputInfoP info X
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RuleP rule)
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{
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OStreamP ostream = c_out_info_ostream (info);
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EntryP entry = rule_entry (rule);
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if (rule_is_required (rule)) {
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write_cstring (ostream, "extern void ");
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} else {
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return;
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}
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c_output_mapped_key (info, entry);
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write_char (ostream, ' ');
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c_output_type_decl (info, rule_param (rule), rule_result (rule));
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write_char (ostream, ';');
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write_newline (ostream);
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}
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static void
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c_output_ext_declaration PROTO_N ((entry, gclosure))
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PROTO_T (EntryP entry X
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GenericP gclosure)
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{
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if (entry_is_rule (entry)) {
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RuleP rule = entry_get_rule (entry);
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COutputInfoP info = (COutputInfoP) gclosure;
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c_output_ext_declaration_1 (info, rule);
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}
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}
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static void
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c_output_terminal_1 PROTO_N ((info, entry))
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PROTO_T (COutputInfoP info X
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EntryP entry)
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{
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OStreamP ostream = c_out_info_ostream (info);
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BasicP basic = entry_get_basic (entry);
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write_cstring (ostream, "#define ");
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c_output_mapped_key (info, entry);
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write_cstring (ostream, " (");
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write_unsigned (ostream, basic_terminal (basic));
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write_char (ostream, ')');
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write_newline (ostream);
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}
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static void
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c_output_terminal PROTO_N ((entry, gclosure))
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PROTO_T (EntryP entry X
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GenericP gclosure)
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{
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if (entry_is_basic (entry)) {
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COutputInfoP info = (COutputInfoP) gclosure;
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c_output_terminal_1 (info, entry);
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}
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}
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static void
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c_output_static_vars_1 PROTO_N ((entry, gclosure))
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PROTO_T (EntryP entry X
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GenericP gclosure)
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{
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if (entry_is_rule (entry)) {
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COutputInfoP info = (COutputInfoP) gclosure;
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RuleP rule = entry_get_rule (entry);
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c_output_non_locals (info, rule_non_locals (rule));
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}
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}
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static void
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c_output_static_vars_2 PROTO_N ((entry, gclosure))
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PROTO_T (EntryP entry X
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GenericP gclosure)
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{
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if (entry_is_rule (entry)) {
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COutputInfoP info = (COutputInfoP) gclosure;
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RuleP rule = entry_get_rule (entry);
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266 |
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c_output_declare_non_locals (info, rule_non_locals (rule));
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}
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}
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static void
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c_output_static_vars PROTO_N ((info, grammar, def))
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PROTO_T (COutputInfoP info X
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GrammarP grammar X
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BoolT def)
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{
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OStreamP ostream = c_out_info_ostream (info);
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TableP table = grammar_table (grammar);
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EntryP predicate_type = grammar_get_predicate_type (grammar);
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280 |
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if (def) {
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write_cstring (ostream, "/* BEGINNING OF STATIC VARIABLES */");
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write_newline (ostream);
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write_newline (ostream);
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}
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if (predicate_type) {
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if (def) {
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if (c_out_info_get_split (info) == 0) {
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289 |
write_cstring (ostream, "static ");
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290 |
}
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} else {
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write_cstring (ostream, "extern ");
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293 |
}
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c_output_mapped_key (info, predicate_type);
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write_char (ostream, ' ');
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c_output_key (info, entry_key (grammar_get_predicate_id (grammar)),
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c_out_info_in_prefix (info));
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write_char (ostream, ';');
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299 |
write_newline (ostream);
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300 |
}
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301 |
if (def) {
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table_iter (table, c_output_static_vars_1, (GenericP) info);
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303 |
write_newline (ostream);
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304 |
} else {
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table_iter (table, c_output_static_vars_2, (GenericP) info);
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306 |
}
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307 |
}
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308 |
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309 |
static void
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310 |
c_out_reset_labels PROTO_Z ()
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311 |
{
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312 |
out_current_label = 0;
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313 |
}
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314 |
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static void
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c_output_label PROTO_N ((info, label, indent))
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317 |
PROTO_T (COutputInfoP info X
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318 |
unsigned label X
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319 |
unsigned indent)
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320 |
{
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321 |
OStreamP ostream = c_out_info_ostream (info);
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322 |
NStringP prefix = c_out_info_label_prefix (info);
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323 |
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324 |
c_output_indent (info, indent - C_INDENT_FOR_LABEL);
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325 |
write_nstring (ostream, prefix);
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write_unsigned (ostream, label);
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write_cstring (ostream, ":;");
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328 |
write_newline (ostream);
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329 |
}
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330 |
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static void
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332 |
c_output_jump PROTO_N ((info, label, indent))
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333 |
PROTO_T (COutputInfoP info X
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334 |
unsigned label X
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335 |
unsigned indent)
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336 |
{
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OStreamP ostream = c_out_info_ostream (info);
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338 |
NStringP prefix = c_out_info_label_prefix (info);
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339 |
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340 |
c_output_indent (info, indent);
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write_cstring (ostream, "goto ");
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write_nstring (ostream, prefix);
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write_unsigned (ostream, label);
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write_char (ostream, ';');
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write_newline (ostream);
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346 |
}
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347 |
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348 |
static void
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349 |
c_output_key_label PROTO_N ((info, key, label, indent))
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350 |
PROTO_T (COutputInfoP info X
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351 |
KeyP key X
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352 |
unsigned label X
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353 |
unsigned indent)
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354 |
{
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355 |
OStreamP ostream = c_out_info_ostream (info);
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356 |
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357 |
c_output_indent (info, indent - C_INDENT_FOR_LABEL);
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358 |
c_output_label_key (info, key, label);
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359 |
write_cstring (ostream, ":;");
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360 |
write_newline (ostream);
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361 |
}
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362 |
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363 |
static void
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364 |
c_output_key_jump PROTO_N ((info, key, label, indent))
|
|
|
365 |
PROTO_T (COutputInfoP info X
|
|
|
366 |
KeyP key X
|
|
|
367 |
unsigned label X
|
|
|
368 |
unsigned indent)
|
|
|
369 |
{
|
|
|
370 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
371 |
|
|
|
372 |
c_output_indent (info, indent);
|
|
|
373 |
write_cstring (ostream, "goto ");
|
|
|
374 |
c_output_label_key (info, key, label);
|
|
|
375 |
write_char (ostream, ';');
|
|
|
376 |
write_newline (ostream);
|
|
|
377 |
}
|
|
|
378 |
|
|
|
379 |
static void
|
|
|
380 |
c_output_switch PROTO_N ((info, indent))
|
|
|
381 |
PROTO_T (COutputInfoP info X
|
|
|
382 |
unsigned indent)
|
|
|
383 |
{
|
|
|
384 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
385 |
|
|
|
386 |
c_output_indent (info, indent);
|
|
|
387 |
write_cstring (ostream, "switch (CURRENT_TERMINAL) {");
|
|
|
388 |
write_newline (ostream);
|
|
|
389 |
}
|
|
|
390 |
|
|
|
391 |
static void
|
|
|
392 |
c_output_case PROTO_N ((info, terminal, indent))
|
|
|
393 |
PROTO_T (COutputInfoP info X
|
|
|
394 |
unsigned terminal X
|
|
|
395 |
unsigned indent)
|
|
|
396 |
{
|
|
|
397 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
398 |
|
|
|
399 |
c_output_indent (info, indent + C_INDENT_STEP - C_INDENT_FOR_CASE);
|
|
|
400 |
write_cstring (ostream, "case ");
|
|
|
401 |
write_unsigned (ostream, terminal);
|
|
|
402 |
write_char (ostream, ':');
|
|
|
403 |
write_newline (ostream);
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
static void
|
|
|
407 |
c_output_default PROTO_N ((info, indent))
|
|
|
408 |
PROTO_T (COutputInfoP info X
|
|
|
409 |
unsigned indent)
|
|
|
410 |
{
|
|
|
411 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
412 |
|
|
|
413 |
c_output_indent (info, indent + C_INDENT_STEP - C_INDENT_FOR_CASE);
|
|
|
414 |
write_cstring (ostream, "default:");
|
|
|
415 |
write_newline (ostream);
|
|
|
416 |
}
|
|
|
417 |
|
|
|
418 |
static void
|
|
|
419 |
c_output_bitvec_cases PROTO_N ((info, bitvec, indent))
|
|
|
420 |
PROTO_T (COutputInfoP info X
|
|
|
421 |
BitVecP bitvec X
|
|
|
422 |
unsigned indent)
|
|
|
423 |
{
|
|
|
424 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
425 |
unsigned terminal = bitvec_first_bit (bitvec);
|
|
|
426 |
unsigned count = 0;
|
|
|
427 |
|
|
|
428 |
do {
|
|
|
429 |
if (count ++ == 0) {
|
|
|
430 |
c_output_indent (info, indent + C_INDENT_STEP - C_INDENT_FOR_CASE);
|
|
|
431 |
} else {
|
|
|
432 |
write_char (ostream, ' ');
|
|
|
433 |
}
|
|
|
434 |
write_cstring (ostream, "case ");
|
|
|
435 |
write_unsigned (ostream, terminal);
|
|
|
436 |
write_char (ostream, ':');
|
|
|
437 |
if (count == 5) {
|
|
|
438 |
write_newline (ostream);
|
|
|
439 |
count = 0;
|
|
|
440 |
}
|
|
|
441 |
} while (bitvec_next_bit (bitvec, &terminal));
|
|
|
442 |
if (count != 0) {
|
|
|
443 |
write_newline (ostream);
|
|
|
444 |
}
|
|
|
445 |
}
|
|
|
446 |
|
|
|
447 |
static void
|
|
|
448 |
c_output_break PROTO_N ((info, indent))
|
|
|
449 |
PROTO_T (COutputInfoP info X
|
|
|
450 |
unsigned indent)
|
|
|
451 |
{
|
|
|
452 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
453 |
|
|
|
454 |
c_output_indent (info, indent);
|
|
|
455 |
write_cstring (ostream, "break;");
|
|
|
456 |
write_newline (ostream);
|
|
|
457 |
}
|
|
|
458 |
|
|
|
459 |
static void
|
|
|
460 |
c_output_return PROTO_N ((info, indent))
|
|
|
461 |
PROTO_T (COutputInfoP info X
|
|
|
462 |
unsigned indent)
|
|
|
463 |
{
|
|
|
464 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
465 |
|
|
|
466 |
c_output_indent (info, indent);
|
|
|
467 |
write_cstring (ostream, "return;");
|
|
|
468 |
write_newline (ostream);
|
|
|
469 |
}
|
|
|
470 |
|
|
|
471 |
static void
|
|
|
472 |
c_output_error_if PROTO_N ((info, error_terminal, indent))
|
|
|
473 |
PROTO_T (COutputInfoP info X
|
|
|
474 |
unsigned error_terminal X
|
|
|
475 |
unsigned indent)
|
|
|
476 |
{
|
|
|
477 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
478 |
|
|
|
479 |
c_output_indent (info, indent);
|
|
|
480 |
write_cstring (ostream, "if ((CURRENT_TERMINAL) == ");
|
|
|
481 |
write_unsigned (ostream, error_terminal);
|
|
|
482 |
write_cstring (ostream, ") {");
|
|
|
483 |
write_newline (ostream);
|
|
|
484 |
}
|
|
|
485 |
|
|
|
486 |
static void
|
|
|
487 |
c_output_else PROTO_N ((info, indent))
|
|
|
488 |
PROTO_T (COutputInfoP info X
|
|
|
489 |
unsigned indent)
|
|
|
490 |
{
|
|
|
491 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
492 |
|
|
|
493 |
c_output_indent (info, indent);
|
|
|
494 |
write_cstring (ostream, "} else {");
|
|
|
495 |
write_newline (ostream);
|
|
|
496 |
}
|
|
|
497 |
|
|
|
498 |
static void
|
|
|
499 |
c_output_restore PROTO_N ((info, handler_rule, outer_level, indent))
|
|
|
500 |
PROTO_T (COutputInfoP info X
|
|
|
501 |
RuleP handler_rule X
|
|
|
502 |
BoolT outer_level X
|
|
|
503 |
unsigned indent)
|
|
|
504 |
{
|
|
|
505 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
506 |
|
|
|
507 |
if (outer_level) {
|
|
|
508 |
c_output_return (info, indent);
|
|
|
509 |
} else {
|
|
|
510 |
c_output_indent (info, indent);
|
|
|
511 |
write_cstring (ostream, "RESTORE_LEXER;");
|
|
|
512 |
write_newline (ostream);
|
|
|
513 |
c_output_jump (info, rule_get_handler_label (handler_rule), indent);
|
|
|
514 |
}
|
|
|
515 |
}
|
|
|
516 |
|
|
|
517 |
static void
|
|
|
518 |
c_output_check PROTO_N ((info, handler_rule, outer_level, error_terminal,
|
|
|
519 |
indent))
|
|
|
520 |
PROTO_T (COutputInfoP info X
|
|
|
521 |
RuleP handler_rule X
|
|
|
522 |
BoolT outer_level X
|
|
|
523 |
unsigned error_terminal X
|
|
|
524 |
unsigned indent)
|
|
|
525 |
{
|
|
|
526 |
c_output_error_if (info, error_terminal, indent);
|
|
|
527 |
c_output_restore (info, handler_rule, outer_level, indent + C_INDENT_STEP);
|
|
|
528 |
c_output_close (info, indent);
|
|
|
529 |
}
|
|
|
530 |
|
|
|
531 |
static void
|
|
|
532 |
c_output_advance PROTO_N ((info, indent))
|
|
|
533 |
PROTO_T (COutputInfoP info X
|
|
|
534 |
unsigned indent)
|
|
|
535 |
{
|
|
|
536 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
537 |
|
|
|
538 |
c_output_indent (info, indent);
|
|
|
539 |
write_cstring (ostream, "ADVANCE_LEXER;");
|
|
|
540 |
write_newline (ostream);
|
|
|
541 |
}
|
|
|
542 |
|
|
|
543 |
static void
|
|
|
544 |
c_output_unreachable PROTO_N ((info, indent))
|
|
|
545 |
PROTO_T (COutputInfoP info X
|
|
|
546 |
unsigned indent)
|
|
|
547 |
{
|
|
|
548 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
549 |
|
|
|
550 |
c_output_indent (info, indent);
|
|
|
551 |
if (c_out_info_get_unreachable (info)) {
|
|
|
552 |
write_cstring (ostream, "UNREACHED;");
|
|
|
553 |
} else {
|
|
|
554 |
write_cstring (ostream, "/*UNREACHED*/");
|
|
|
555 |
}
|
|
|
556 |
write_newline (ostream);
|
|
|
557 |
}
|
|
|
558 |
|
|
|
559 |
static void
|
|
|
560 |
c_output_basic_extract PROTO_N ((info, code, item, key, state, indent))
|
|
|
561 |
PROTO_T (COutputInfoP info X
|
|
|
562 |
CCodeP code X
|
|
|
563 |
ItemP item X
|
|
|
564 |
KeyP key X
|
|
|
565 |
SaveRStackP state X
|
|
|
566 |
unsigned indent)
|
|
|
567 |
{
|
|
|
568 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
569 |
|
|
|
570 |
c_output_key_message (info, "/* BEGINNING OF EXTRACT: ", key, " */",
|
|
|
571 |
indent);
|
|
|
572 |
c_output_open (info, indent);
|
|
|
573 |
c_output_location (info, c_code_file (code), c_code_line (code));
|
|
|
574 |
c_output_c_code_basic (info, code, item_result (item), state);
|
|
|
575 |
c_output_location (info, ostream_name (ostream),
|
|
|
576 |
ostream_line (ostream) + 1);
|
|
|
577 |
c_output_close (info, indent);
|
|
|
578 |
c_output_key_message (info, "/* END OF EXTRACT: ", key, " */", indent);
|
|
|
579 |
}
|
|
|
580 |
|
|
|
581 |
static void
|
|
|
582 |
c_output_basic_in_alt PROTO_N ((info, item, handler_rule, need_switch,
|
|
|
583 |
need_check, outer_level, error_terminal, state,
|
|
|
584 |
indent))
|
|
|
585 |
PROTO_T (COutputInfoP info X
|
|
|
586 |
ItemP item X
|
|
|
587 |
RuleP handler_rule X
|
|
|
588 |
BoolT need_switch X
|
|
|
589 |
BoolT need_check X
|
|
|
590 |
BoolT outer_level X
|
|
|
591 |
unsigned error_terminal X
|
|
|
592 |
SaveRStackP state X
|
|
|
593 |
unsigned indent)
|
|
|
594 |
{
|
|
|
595 |
EntryP entry = item_entry (item);
|
|
|
596 |
KeyP key = entry_key (entry);
|
|
|
597 |
BasicP basic = entry_get_basic (entry);
|
|
|
598 |
unsigned terminal = basic_terminal (basic);
|
|
|
599 |
CCodeP code = basic_get_result_code (basic);
|
|
|
600 |
unsigned code_indent = (need_switch ? indent + C_INDENT_STEP : indent);
|
|
|
601 |
|
|
|
602 |
if (need_switch) {
|
|
|
603 |
c_output_switch (info, indent);
|
|
|
604 |
c_output_case (info, terminal, indent);
|
|
|
605 |
if (code) {
|
|
|
606 |
c_output_basic_extract (info, code, item, key, state, code_indent);
|
|
|
607 |
}
|
|
|
608 |
c_output_break (info, code_indent);
|
|
|
609 |
if (need_check) {
|
|
|
610 |
c_output_case (info, error_terminal, indent);
|
|
|
611 |
c_output_restore (info, handler_rule, outer_level, code_indent);
|
|
|
612 |
}
|
|
|
613 |
c_output_default (info, indent);
|
|
|
614 |
c_output_jump (info, rule_get_handler_label (handler_rule),
|
|
|
615 |
code_indent);
|
|
|
616 |
c_output_close (info, indent);
|
|
|
617 |
} else {
|
|
|
618 |
ASSERT (!need_check);
|
|
|
619 |
if (code) {
|
|
|
620 |
c_output_basic_extract (info, code, item, key, state, code_indent);
|
|
|
621 |
}
|
|
|
622 |
}
|
|
|
623 |
c_output_advance (info, indent);
|
|
|
624 |
}
|
|
|
625 |
|
|
|
626 |
static void
|
|
|
627 |
c_output_tail_call PROTO_N ((info, item, handler_rule, need_check, outer_level,
|
|
|
628 |
error_terminal, rstack, non_local_stack, state,
|
|
|
629 |
indent))
|
|
|
630 |
PROTO_T (COutputInfoP info X
|
|
|
631 |
ItemP item X
|
|
|
632 |
RuleP handler_rule X
|
|
|
633 |
BoolT need_check X
|
|
|
634 |
BoolT outer_level X
|
|
|
635 |
unsigned error_terminal X
|
|
|
636 |
RStackP rstack X
|
|
|
637 |
RStackP non_local_stack X
|
|
|
638 |
SaveRStackP state X
|
|
|
639 |
unsigned indent)
|
|
|
640 |
{
|
|
|
641 |
unsigned code_indent = (need_check ? indent + C_INDENT_STEP : indent);
|
|
|
642 |
EntryP entry = item_entry (item);
|
|
|
643 |
RuleP rule = entry_get_rule (entry);
|
|
|
644 |
KeyP key = entry_key (entry);
|
|
|
645 |
|
|
|
646 |
if (need_check) {
|
|
|
647 |
c_output_error_if (info, error_terminal, indent);
|
|
|
648 |
c_output_restore (info, handler_rule, outer_level, code_indent);
|
|
|
649 |
c_output_else (info, indent);
|
|
|
650 |
}
|
|
|
651 |
c_output_restore_non_locals (info, rule, indent, rstack, non_local_stack);
|
|
|
652 |
c_output_tail_decls (info, item_param (item), state, rule_param (rule),
|
|
|
653 |
rule_rstack_state (rule), code_indent);
|
|
|
654 |
c_output_key_jump (info, key, rule_get_start_label (rule), code_indent);
|
|
|
655 |
if (need_check) {
|
|
|
656 |
c_output_close (info, indent);
|
|
|
657 |
}
|
|
|
658 |
}
|
|
|
659 |
|
|
|
660 |
static BoolT c_output_rule
|
|
|
661 |
PROTO_S ((COutputInfoP, RuleP, RuleP, EntryListP, BoolT, EntryP,
|
|
|
662 |
unsigned, unsigned, RStackP, RStackP, TableP));
|
|
|
663 |
|
|
|
664 |
static BoolT
|
|
|
665 |
c_output_rule_in_alt PROTO_N ((info, item, handler_rule, call_list, need_check,
|
|
|
666 |
outer_level, predicate_id, error_terminal,
|
|
|
667 |
indent, rstack, non_local_stack, table,
|
|
|
668 |
reachable_ref))
|
|
|
669 |
PROTO_T (COutputInfoP info X
|
|
|
670 |
ItemP item X
|
|
|
671 |
RuleP handler_rule X
|
|
|
672 |
EntryListP call_list X
|
|
|
673 |
BoolT need_check X
|
|
|
674 |
BoolT outer_level X
|
|
|
675 |
EntryP predicate_id X
|
|
|
676 |
unsigned error_terminal X
|
|
|
677 |
unsigned indent X
|
|
|
678 |
RStackP rstack X
|
|
|
679 |
RStackP non_local_stack X
|
|
|
680 |
TableP table X
|
|
|
681 |
BoolT *reachable_ref)
|
|
|
682 |
{
|
|
|
683 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
684 |
EntryP entry = item_entry (item);
|
|
|
685 |
RuleP rule = entry_get_rule (entry);
|
|
|
686 |
KeyP key = entry_key (entry);
|
|
|
687 |
BoolT tail_call = (item_is_tail_call (item) &&
|
|
|
688 |
rule_is_being_output (rule));
|
|
|
689 |
SaveRStackT state;
|
|
|
690 |
|
|
|
691 |
rstack_save_state (rstack, &state);
|
|
|
692 |
if ((item_is_inlinable (item)) &&
|
|
|
693 |
(tail_call || (!(rule_is_being_output (rule) ||
|
|
|
694 |
(rule_get_call_count (rule) > 1))))) {
|
|
|
695 |
c_output_key_message (info, "/* BEGINNING OF INLINE: ", key, " */",
|
|
|
696 |
indent);
|
|
|
697 |
if (tail_call) {
|
|
|
698 |
c_output_tail_call (info, item, handler_rule, need_check,
|
|
|
699 |
outer_level, error_terminal, rstack,
|
|
|
700 |
non_local_stack, &state, indent);
|
|
|
701 |
*reachable_ref = FALSE;
|
|
|
702 |
} else {
|
|
|
703 |
unsigned code_indent = (indent + C_INDENT_STEP);
|
|
|
704 |
BoolT copies;
|
|
|
705 |
|
|
|
706 |
c_output_open (info, indent);
|
|
|
707 |
rstack_push_frame (rstack);
|
|
|
708 |
copies = c_output_required_copies (info, rule_param (rule),
|
|
|
709 |
item_param (item), rstack,
|
|
|
710 |
&state, code_indent, table);
|
|
|
711 |
if (copies) {
|
|
|
712 |
c_output_open (info, code_indent);
|
|
|
713 |
code_indent += C_INDENT_STEP;
|
|
|
714 |
}
|
|
|
715 |
rstack_save_state (rstack, &state);
|
|
|
716 |
rstack_push_frame (rstack);
|
|
|
717 |
rstack_compute_formal_inlining (rstack, rule_param (rule),
|
|
|
718 |
item_param (item));
|
|
|
719 |
rstack_compute_formal_inlining (rstack, rule_result (rule),
|
|
|
720 |
item_result (item));
|
|
|
721 |
rstack_save_state (rstack, rule_rstack_state (rule));
|
|
|
722 |
if (!c_output_rule (info, rule, handler_rule,
|
|
|
723 |
item_is_tail_call (item) ? call_list :
|
|
|
724 |
rule_call_list (rule), need_check,
|
|
|
725 |
predicate_id, error_terminal, code_indent,
|
|
|
726 |
rstack, non_local_stack, table)) {
|
|
|
727 |
*reachable_ref = FALSE;
|
|
|
728 |
}
|
|
|
729 |
rstack_pop_frame (rstack);
|
|
|
730 |
if (copies) {
|
|
|
731 |
c_output_close (info, indent + C_INDENT_STEP);
|
|
|
732 |
}
|
|
|
733 |
rstack_pop_frame (rstack);
|
|
|
734 |
c_output_close (info, indent);
|
|
|
735 |
}
|
|
|
736 |
c_output_key_message (info, "/* END OF INLINE: ", key, " */", indent);
|
|
|
737 |
return (FALSE);
|
|
|
738 |
}
|
|
|
739 |
if (need_check && outer_level) {
|
|
|
740 |
c_output_check (info, handler_rule, TRUE, error_terminal, indent);
|
|
|
741 |
}
|
|
|
742 |
c_output_indent (info, indent);
|
|
|
743 |
c_output_mapped_key (info, entry);
|
|
|
744 |
write_cstring (ostream, " (");
|
|
|
745 |
c_output_rule_params (info, item_param (item), item_result (item), &state);
|
|
|
746 |
write_cstring (ostream, ");");
|
|
|
747 |
write_newline (ostream);
|
|
|
748 |
return (TRUE);
|
|
|
749 |
}
|
|
|
750 |
|
|
|
751 |
static void
|
|
|
752 |
c_output_action_in_alt PROTO_N ((info, item, handler_rule, need_check,
|
|
|
753 |
outer_level, error_terminal, rstack, indent,
|
|
|
754 |
table))
|
|
|
755 |
PROTO_T (COutputInfoP info X
|
|
|
756 |
ItemP item X
|
|
|
757 |
RuleP handler_rule X
|
|
|
758 |
BoolT need_check X
|
|
|
759 |
BoolT outer_level X
|
|
|
760 |
unsigned error_terminal X
|
|
|
761 |
RStackP rstack X
|
|
|
762 |
unsigned indent X
|
|
|
763 |
TableP table)
|
|
|
764 |
{
|
|
|
765 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
766 |
EntryP entry = item_entry (item);
|
|
|
767 |
ActionP action = entry_get_action (entry);
|
|
|
768 |
KeyP key = entry_key (entry);
|
|
|
769 |
CCodeP code = action_get_code (action);
|
|
|
770 |
SaveRStackT state;
|
|
|
771 |
BoolT copies;
|
|
|
772 |
|
|
|
773 |
if (need_check) {
|
|
|
774 |
c_output_check (info, handler_rule, outer_level, error_terminal,
|
|
|
775 |
indent);
|
|
|
776 |
}
|
|
|
777 |
c_output_key_message (info, "/* BEGINNING OF ACTION: ", key, " */",
|
|
|
778 |
indent);
|
|
|
779 |
c_output_open (info, indent);
|
|
|
780 |
rstack_save_state (rstack, &state);
|
|
|
781 |
rstack_push_frame (rstack);
|
|
|
782 |
copies = c_output_required_copies (info, c_code_param (code),
|
|
|
783 |
item_param (item), rstack, &state,
|
|
|
784 |
indent + C_INDENT_STEP, table);
|
|
|
785 |
if (copies) {
|
|
|
786 |
c_output_open (info, indent + C_INDENT_STEP);
|
|
|
787 |
}
|
|
|
788 |
rstack_save_state (rstack, &state);
|
|
|
789 |
c_output_location (info, c_code_file (code), c_code_line (code));
|
|
|
790 |
c_output_c_code_action (info, code, item_param (item),
|
|
|
791 |
item_result (item), &state, handler_rule);
|
|
|
792 |
c_output_location (info, ostream_name (ostream),
|
|
|
793 |
ostream_line (ostream) + 1);
|
|
|
794 |
rstack_pop_frame (rstack);
|
|
|
795 |
if (copies) {
|
|
|
796 |
c_output_close (info, indent + C_INDENT_STEP);
|
|
|
797 |
}
|
|
|
798 |
c_output_close (info, indent);
|
|
|
799 |
c_output_key_message (info, "/* END OF ACTION: ", key, " */", indent);
|
|
|
800 |
}
|
|
|
801 |
|
|
|
802 |
static void
|
|
|
803 |
c_output_predicate_in_alt PROTO_N ((info, rule, item, initial, handler_rule,
|
|
|
804 |
needed_switch, need_check, outer_level,
|
|
|
805 |
predicate_id, error_terminal, rstack,
|
|
|
806 |
indent, table))
|
|
|
807 |
PROTO_T (COutputInfoP info X
|
|
|
808 |
RuleP rule X
|
|
|
809 |
ItemP item X
|
|
|
810 |
ItemP initial X
|
|
|
811 |
RuleP handler_rule X
|
|
|
812 |
BoolT needed_switch X
|
|
|
813 |
BoolT need_check X
|
|
|
814 |
BoolT outer_level X
|
|
|
815 |
EntryP predicate_id X
|
|
|
816 |
unsigned error_terminal X
|
|
|
817 |
RStackP rstack X
|
|
|
818 |
unsigned indent X
|
|
|
819 |
TableP table)
|
|
|
820 |
{
|
|
|
821 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
822 |
|
|
|
823 |
c_output_action_in_alt (info, item, handler_rule, need_check, outer_level,
|
|
|
824 |
error_terminal, rstack, indent, table);
|
|
|
825 |
c_output_indent (info, indent);
|
|
|
826 |
write_cstring (ostream, "if (!");
|
|
|
827 |
c_output_key (info, entry_key (predicate_id), c_out_info_in_prefix (info));
|
|
|
828 |
write_cstring (ostream, ")");
|
|
|
829 |
write_newline (ostream);
|
|
|
830 |
if ((item == initial) && (!needed_switch)) {
|
|
|
831 |
unsigned label = c_out_next_label ();
|
|
|
832 |
|
|
|
833 |
c_output_jump (info, label, indent + C_INDENT_STEP);
|
|
|
834 |
rule_set_next_label (rule, label);
|
|
|
835 |
} else {
|
|
|
836 |
c_output_jump (info, rule_get_handler_label (handler_rule),
|
|
|
837 |
indent + C_INDENT_STEP);
|
|
|
838 |
}
|
|
|
839 |
}
|
|
|
840 |
|
|
|
841 |
static BoolT
|
|
|
842 |
c_output_alt PROTO_N ((info, alt, rule, handler_rule, call_list, need_switch,
|
|
|
843 |
need_check, outer_level, predicate_id, error_terminal,
|
|
|
844 |
indent, rstack, non_local_stack, table))
|
|
|
845 |
PROTO_T (COutputInfoP info X
|
|
|
846 |
AltP alt X
|
|
|
847 |
RuleP rule X
|
|
|
848 |
RuleP handler_rule X
|
|
|
849 |
EntryListP call_list X
|
|
|
850 |
BoolT need_switch X
|
|
|
851 |
BoolT need_check X
|
|
|
852 |
BoolT outer_level X
|
|
|
853 |
EntryP predicate_id X
|
|
|
854 |
unsigned error_terminal X
|
|
|
855 |
unsigned indent X
|
|
|
856 |
RStackP rstack X
|
|
|
857 |
RStackP non_local_stack X
|
|
|
858 |
TableP table)
|
|
|
859 |
{
|
|
|
860 |
ItemP initial = alt_item_head (alt);
|
|
|
861 |
BoolT needed_switch = need_switch;
|
|
|
862 |
unsigned code_indent = (indent + C_INDENT_STEP);
|
|
|
863 |
BoolT reachable = TRUE;
|
|
|
864 |
ItemP item;
|
|
|
865 |
SaveRStackT state;
|
|
|
866 |
|
|
|
867 |
rstack_push_frame (rstack);
|
|
|
868 |
rstack_compute_local_renaming (rstack, alt_names (alt), rule_result (rule),
|
|
|
869 |
table);
|
|
|
870 |
rstack_save_state (rstack, &state);
|
|
|
871 |
c_output_open (info, indent);
|
|
|
872 |
c_output_alt_names (info, alt_names (alt), rule_result (rule), &state,
|
|
|
873 |
code_indent);
|
|
|
874 |
for (item = initial; item; item = item_next (item)) {
|
|
|
875 |
switch (item_type (item)) EXHAUSTIVE {
|
|
|
876 |
case ET_BASIC:
|
|
|
877 |
c_output_basic_in_alt (info, item, handler_rule, need_switch,
|
|
|
878 |
need_check, outer_level, error_terminal,
|
|
|
879 |
&state, code_indent);
|
|
|
880 |
need_switch = TRUE;
|
|
|
881 |
need_check = FALSE;
|
|
|
882 |
break;
|
|
|
883 |
case ET_RULE:
|
|
|
884 |
need_check = c_output_rule_in_alt (info, item, handler_rule,
|
|
|
885 |
call_list, need_check,
|
|
|
886 |
outer_level, predicate_id,
|
|
|
887 |
error_terminal, code_indent,
|
|
|
888 |
rstack, non_local_stack, table,
|
|
|
889 |
&reachable);
|
|
|
890 |
need_switch = TRUE;
|
|
|
891 |
break;
|
|
|
892 |
case ET_PREDICATE:
|
|
|
893 |
c_output_predicate_in_alt (info, rule, item, initial, handler_rule,
|
|
|
894 |
needed_switch, need_check, outer_level,
|
|
|
895 |
predicate_id, error_terminal, rstack,
|
|
|
896 |
code_indent, table);
|
|
|
897 |
need_switch = TRUE;
|
|
|
898 |
need_check = FALSE;
|
|
|
899 |
break;
|
|
|
900 |
case ET_ACTION:
|
|
|
901 |
c_output_action_in_alt (info, item, handler_rule, need_check,
|
|
|
902 |
outer_level, error_terminal, rstack,
|
|
|
903 |
code_indent, table);
|
|
|
904 |
need_check = FALSE;
|
|
|
905 |
break;
|
|
|
906 |
case ET_RENAME:
|
|
|
907 |
if (need_check) {
|
|
|
908 |
c_output_check (info, handler_rule, outer_level,
|
|
|
909 |
error_terminal, code_indent);
|
|
|
910 |
}
|
|
|
911 |
c_output_rename (info, item_param (item), item_result (item),
|
|
|
912 |
&state, code_indent);
|
|
|
913 |
need_check = FALSE;
|
|
|
914 |
break;
|
|
|
915 |
case ET_NON_LOCAL:
|
|
|
916 |
case ET_NAME:
|
|
|
917 |
case ET_TYPE:
|
|
|
918 |
UNREACHED;
|
|
|
919 |
}
|
|
|
920 |
outer_level = FALSE;
|
|
|
921 |
}
|
|
|
922 |
if (reachable) {
|
|
|
923 |
if (need_check) {
|
|
|
924 |
c_output_check (info, handler_rule, outer_level, error_terminal,
|
|
|
925 |
code_indent);
|
|
|
926 |
}
|
|
|
927 |
if (item_is_predicate (initial) && (!needed_switch)) {
|
|
|
928 |
c_output_jump (info, rule_get_end_label (rule), code_indent);
|
|
|
929 |
reachable = FALSE;
|
|
|
930 |
}
|
|
|
931 |
}
|
|
|
932 |
c_output_close (info, indent);
|
|
|
933 |
if (!reachable) {
|
|
|
934 |
c_output_unreachable (info, indent);
|
|
|
935 |
}
|
|
|
936 |
rstack_pop_frame (rstack);
|
|
|
937 |
return (reachable);
|
|
|
938 |
}
|
|
|
939 |
|
|
|
940 |
static BoolT
|
|
|
941 |
c_output_rule PROTO_N ((info, rule, handler_rule, call_list, need_check,
|
|
|
942 |
predicate_id, error_terminal, indent, rstack,
|
|
|
943 |
non_local_stack, table))
|
|
|
944 |
PROTO_T (COutputInfoP info X
|
|
|
945 |
RuleP rule X
|
|
|
946 |
RuleP handler_rule X
|
|
|
947 |
EntryListP call_list X
|
|
|
948 |
BoolT need_check X
|
|
|
949 |
EntryP predicate_id X
|
|
|
950 |
unsigned error_terminal X
|
|
|
951 |
unsigned indent X
|
|
|
952 |
RStackP rstack X
|
|
|
953 |
RStackP non_local_stack X
|
|
|
954 |
TableP table)
|
|
|
955 |
{
|
|
|
956 |
EntryP entry = rule_entry (rule);
|
|
|
957 |
KeyP key = entry_key (entry);
|
|
|
958 |
EntryListP predicate_firsts = rule_predicate_first (rule);
|
|
|
959 |
BoolT predicates = (!entry_list_is_empty (predicate_firsts));
|
|
|
960 |
RuleP old_handler_rule = handler_rule;
|
|
|
961 |
BoolT outer_level = (old_handler_rule == rule);
|
|
|
962 |
BoolT reachable = TRUE;
|
|
|
963 |
unsigned code_indent = indent;
|
|
|
964 |
NonLocalListP non_locals = rule_non_locals (rule);
|
|
|
965 |
BoolT has_non_locals = (!non_local_list_is_empty (non_locals));
|
|
|
966 |
AltP handler = rule_get_handler (rule);
|
|
|
967 |
BoolT full_first_set = bitvec_is_full (rule_first_set (rule));
|
|
|
968 |
BoolT one_alt = rule_has_one_alt (rule);
|
|
|
969 |
|
|
|
970 |
ASSERT (!rule_is_being_output (rule));
|
|
|
971 |
rule_being_output (rule);
|
|
|
972 |
rule_set_end_label (rule, c_out_next_label ());
|
|
|
973 |
if (need_check && (predicates || has_non_locals || one_alt)) {
|
|
|
974 |
c_output_check (info, handler_rule, outer_level, error_terminal,
|
|
|
975 |
indent);
|
|
|
976 |
need_check = FALSE;
|
|
|
977 |
}
|
|
|
978 |
if (outer_level) {
|
|
|
979 |
rule_set_handler_label (rule, c_out_next_label ());
|
|
|
980 |
} else if ((handler != NIL (AltP)) || has_non_locals) {
|
|
|
981 |
handler_rule = rule;
|
|
|
982 |
rule_set_handler_label (rule, c_out_next_label ());
|
|
|
983 |
}
|
|
|
984 |
if (entry_list_contains (call_list, entry)) {
|
|
|
985 |
unsigned label = c_out_next_label ();
|
|
|
986 |
|
|
|
987 |
c_output_key_label (info, key, label, indent);
|
|
|
988 |
rule_set_start_label (rule, label);
|
|
|
989 |
}
|
|
|
990 |
if (has_non_locals) {
|
|
|
991 |
c_output_open (info, indent);
|
|
|
992 |
code_indent += C_INDENT_STEP;
|
|
|
993 |
rstack_push_frame (rstack);
|
|
|
994 |
rstack_push_frame (non_local_stack);
|
|
|
995 |
c_output_save_non_locals (info, rule, code_indent, rstack,
|
|
|
996 |
non_local_stack, handler_rule, table);
|
|
|
997 |
}
|
|
|
998 |
if (one_alt) {
|
|
|
999 |
if (!rule_has_empty_alt (rule)) {
|
|
|
1000 |
AltP alt = rule_alt_head (rule);
|
|
|
1001 |
|
|
|
1002 |
reachable = c_output_alt (info, alt, rule, handler_rule, call_list,
|
|
|
1003 |
TRUE, need_check, outer_level,
|
|
|
1004 |
predicate_id, error_terminal,
|
|
|
1005 |
code_indent, rstack, non_local_stack,
|
|
|
1006 |
table);
|
|
|
1007 |
} else {
|
|
|
1008 |
if (need_check) {
|
|
|
1009 |
c_output_check (info, handler_rule, outer_level,
|
|
|
1010 |
error_terminal, code_indent);
|
|
|
1011 |
}
|
|
|
1012 |
reachable = TRUE;
|
|
|
1013 |
}
|
|
|
1014 |
} else {
|
|
|
1015 |
BoolT non_predicate_alts = TRUE;
|
|
|
1016 |
AltP see_through_alt = rule_see_through_alt (rule);
|
|
|
1017 |
AltP alt;
|
|
|
1018 |
|
|
|
1019 |
if (predicates) {
|
|
|
1020 |
non_predicate_alts = FALSE;
|
|
|
1021 |
for (alt = rule_alt_head (rule); alt; alt = alt_next (alt)) {
|
|
|
1022 |
ItemP item = alt_item_head (alt);
|
|
|
1023 |
|
|
|
1024 |
if (item_is_predicate (item)) {
|
|
|
1025 |
(void) c_output_alt (info, alt, rule, handler_rule,
|
|
|
1026 |
call_list, FALSE, FALSE, FALSE,
|
|
|
1027 |
predicate_id, error_terminal,
|
|
|
1028 |
code_indent, rstack, non_local_stack,
|
|
|
1029 |
table);
|
|
|
1030 |
c_output_label (info, rule_get_next_label (rule),
|
|
|
1031 |
code_indent);
|
|
|
1032 |
} else {
|
|
|
1033 |
non_predicate_alts = TRUE;
|
|
|
1034 |
}
|
|
|
1035 |
}
|
|
|
1036 |
}
|
|
|
1037 |
if (non_predicate_alts) {
|
|
|
1038 |
reachable = FALSE;
|
|
|
1039 |
c_output_switch (info, code_indent);
|
|
|
1040 |
for (alt = rule_alt_head (rule); alt; alt = alt_next (alt)) {
|
|
|
1041 |
ItemP item = alt_item_head (alt);
|
|
|
1042 |
|
|
|
1043 |
if (!item_is_predicate (item)) {
|
|
|
1044 |
if (alt == see_through_alt) {
|
|
|
1045 |
ASSERT (!full_first_set);
|
|
|
1046 |
c_output_default (info, code_indent);
|
|
|
1047 |
} else {
|
|
|
1048 |
c_output_bitvec_cases (info, alt_first_set (alt),
|
|
|
1049 |
code_indent);
|
|
|
1050 |
}
|
|
|
1051 |
if (c_output_alt (info, alt, rule, handler_rule, call_list,
|
|
|
1052 |
FALSE, FALSE, FALSE, predicate_id,
|
|
|
1053 |
error_terminal,
|
|
|
1054 |
code_indent + C_INDENT_STEP,
|
|
|
1055 |
rstack, non_local_stack, table)) {
|
|
|
1056 |
c_output_break (info, code_indent + C_INDENT_STEP);
|
|
|
1057 |
reachable = TRUE;
|
|
|
1058 |
}
|
|
|
1059 |
}
|
|
|
1060 |
}
|
|
|
1061 |
if (need_check) {
|
|
|
1062 |
c_output_case (info, error_terminal, code_indent);
|
|
|
1063 |
c_output_restore (info, handler_rule, outer_level,
|
|
|
1064 |
code_indent + C_INDENT_STEP);
|
|
|
1065 |
}
|
|
|
1066 |
if ((see_through_alt == NIL (AltP)) && (!full_first_set)) {
|
|
|
1067 |
c_output_default (info, code_indent);
|
|
|
1068 |
if (!rule_has_empty_alt (rule)) {
|
|
|
1069 |
c_output_jump (info, rule_get_handler_label (handler_rule),
|
|
|
1070 |
code_indent + C_INDENT_STEP);
|
|
|
1071 |
} else {
|
|
|
1072 |
c_output_break (info, code_indent + C_INDENT_STEP);
|
|
|
1073 |
reachable = TRUE;
|
|
|
1074 |
}
|
|
|
1075 |
}
|
|
|
1076 |
c_output_close (info, code_indent);
|
|
|
1077 |
} else {
|
|
|
1078 |
ASSERT (!need_check);
|
|
|
1079 |
if (!rule_has_empty_alt (rule)) {
|
|
|
1080 |
c_output_jump (info, rule_get_handler_label (handler_rule),
|
|
|
1081 |
code_indent);
|
|
|
1082 |
}
|
|
|
1083 |
}
|
|
|
1084 |
}
|
|
|
1085 |
if (((handler != NIL (AltP)) || has_non_locals || outer_level) &&
|
|
|
1086 |
rule_used_handler_label (rule)) {
|
|
|
1087 |
if (reachable) {
|
|
|
1088 |
if (outer_level && types_equal_zero_tuple (rule_result (rule)) &&
|
|
|
1089 |
(!has_non_locals)) {
|
|
|
1090 |
c_output_return (info, code_indent);
|
|
|
1091 |
} else {
|
|
|
1092 |
c_output_jump (info, rule_get_end_label (rule), code_indent);
|
|
|
1093 |
}
|
|
|
1094 |
} else {
|
|
|
1095 |
c_output_unreachable (info, code_indent);
|
|
|
1096 |
}
|
|
|
1097 |
reachable = FALSE;
|
|
|
1098 |
if (handler) {
|
|
|
1099 |
RuleP cleanup_handler_rule = old_handler_rule;
|
|
|
1100 |
|
|
|
1101 |
c_output_label (info, rule_get_handler_label (rule), code_indent);
|
|
|
1102 |
reachable = TRUE;
|
|
|
1103 |
if (outer_level || has_non_locals) {
|
|
|
1104 |
rule_set_handler_label (rule, c_out_next_label ());
|
|
|
1105 |
cleanup_handler_rule = rule;
|
|
|
1106 |
}
|
|
|
1107 |
if (!c_output_alt (info, handler, rule, cleanup_handler_rule,
|
|
|
1108 |
call_list, TRUE, FALSE, FALSE, predicate_id,
|
|
|
1109 |
error_terminal, code_indent, rstack,
|
|
|
1110 |
non_local_stack, table)) {
|
|
|
1111 |
reachable = FALSE;
|
|
|
1112 |
}
|
|
|
1113 |
}
|
|
|
1114 |
if ((outer_level || has_non_locals) &&
|
|
|
1115 |
rule_used_handler_label (rule)) {
|
|
|
1116 |
if (reachable) {
|
|
|
1117 |
c_output_jump (info, rule_get_end_label (rule), code_indent);
|
|
|
1118 |
} else if (handler) {
|
|
|
1119 |
c_output_unreachable (info, code_indent);
|
|
|
1120 |
}
|
|
|
1121 |
c_output_label (info, rule_get_handler_label (rule), code_indent);
|
|
|
1122 |
if (has_non_locals) {
|
|
|
1123 |
c_output_restore_non_locals (info, rule, code_indent, rstack,
|
|
|
1124 |
non_local_stack);
|
|
|
1125 |
}
|
|
|
1126 |
if (outer_level) {
|
|
|
1127 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1128 |
|
|
|
1129 |
c_output_indent (info, code_indent);
|
|
|
1130 |
write_cstring (ostream, "SAVE_LEXER (");
|
|
|
1131 |
write_unsigned (ostream, error_terminal);
|
|
|
1132 |
write_cstring (ostream, ");");
|
|
|
1133 |
write_newline (ostream);
|
|
|
1134 |
c_output_return (info, code_indent);
|
|
|
1135 |
} else {
|
|
|
1136 |
c_output_jump (info, rule_get_handler_label (old_handler_rule),
|
|
|
1137 |
code_indent);
|
|
|
1138 |
}
|
|
|
1139 |
reachable = FALSE;
|
|
|
1140 |
}
|
|
|
1141 |
}
|
|
|
1142 |
if (rule_used_end_label (rule)) {
|
|
|
1143 |
c_output_label (info, rule_get_end_label (rule), code_indent);
|
|
|
1144 |
reachable = TRUE;
|
|
|
1145 |
}
|
|
|
1146 |
if (reachable) {
|
|
|
1147 |
if (has_non_locals) {
|
|
|
1148 |
c_output_restore_non_locals (info, rule, code_indent, rstack,
|
|
|
1149 |
non_local_stack);
|
|
|
1150 |
}
|
|
|
1151 |
if (outer_level) {
|
|
|
1152 |
c_output_result_assign (info, rule_result (rule), code_indent);
|
|
|
1153 |
}
|
|
|
1154 |
}
|
|
|
1155 |
if (has_non_locals) {
|
|
|
1156 |
c_output_close (info, indent);
|
|
|
1157 |
rstack_pop_frame (non_local_stack);
|
|
|
1158 |
rstack_pop_frame (rstack);
|
|
|
1159 |
}
|
|
|
1160 |
rule_not_being_output (rule);
|
|
|
1161 |
return (reachable);
|
|
|
1162 |
}
|
|
|
1163 |
|
|
|
1164 |
static void
|
|
|
1165 |
c_output_definition_1 PROTO_N ((info, rule, predicate_id, predicate_type,
|
|
|
1166 |
error_terminal, table))
|
|
|
1167 |
PROTO_T (COutputInfoP info X
|
|
|
1168 |
RuleP rule X
|
|
|
1169 |
EntryP predicate_id X
|
|
|
1170 |
EntryP predicate_type X
|
|
|
1171 |
unsigned error_terminal X
|
|
|
1172 |
TableP table)
|
|
|
1173 |
{
|
|
|
1174 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1175 |
EntryP entry = rule_entry (rule);
|
|
|
1176 |
unsigned split = c_out_info_get_split (info);
|
|
|
1177 |
RStackT rstack;
|
|
|
1178 |
RStackT non_local_stack;
|
|
|
1179 |
|
|
|
1180 |
if (rule_is_required (rule)) {
|
|
|
1181 |
write_cstring (ostream, "void");
|
|
|
1182 |
} else if (rule_needs_function (rule)) {
|
|
|
1183 |
if (split != 0) {
|
|
|
1184 |
write_cstring (ostream, "void");
|
|
|
1185 |
} else {
|
|
|
1186 |
write_cstring (ostream, "static void");
|
|
|
1187 |
}
|
|
|
1188 |
} else {
|
|
|
1189 |
return;
|
|
|
1190 |
}
|
|
|
1191 |
write_newline (ostream);
|
|
|
1192 |
c_output_mapped_key (info, entry);
|
|
|
1193 |
write_char (ostream, ' ');
|
|
|
1194 |
c_output_type_defn (info, rule_param (rule), rule_result (rule));
|
|
|
1195 |
c_out_reset_labels ();
|
|
|
1196 |
rstack_init (&rstack);
|
|
|
1197 |
rstack_push_frame (&rstack);
|
|
|
1198 |
rstack_add_translation (&rstack, predicate_id, predicate_id,
|
|
|
1199 |
predicate_type, FALSE);
|
|
|
1200 |
rstack_compute_formal_renaming (&rstack, rule_param (rule));
|
|
|
1201 |
rstack_compute_formal_renaming (&rstack, rule_result (rule));
|
|
|
1202 |
rstack_save_state (&rstack, rule_rstack_state (rule));
|
|
|
1203 |
rstack_init (&non_local_stack);
|
|
|
1204 |
(void) c_output_rule (info, rule, rule, rule_call_list (rule), TRUE,
|
|
|
1205 |
predicate_id, error_terminal, C_INDENT_STEP,
|
|
|
1206 |
&rstack, &non_local_stack, table);
|
|
|
1207 |
write_char (ostream, '}');
|
|
|
1208 |
write_newline (ostream);
|
|
|
1209 |
write_newline (ostream);
|
|
|
1210 |
rstack_destroy (&rstack);
|
|
|
1211 |
rstack_destroy (&non_local_stack);
|
|
|
1212 |
if (split != 0) {
|
|
|
1213 |
if (ostream_line (ostream) >= split) {
|
|
|
1214 |
CStringP name = ostream_gen_name (ostream);
|
|
|
1215 |
CCodeP header = c_out_info_get_header1 (info);
|
|
|
1216 |
write_cstring (ostream, "/* END OF FILE */");
|
|
|
1217 |
write_newline (ostream);
|
|
|
1218 |
ostream_close (ostream);
|
|
|
1219 |
if (!ostream_open (ostream, name)) {
|
|
|
1220 |
E_cannot_open_output_file (name);
|
|
|
1221 |
UNREACHED;
|
|
|
1222 |
}
|
|
|
1223 |
c_output_identification (info);
|
|
|
1224 |
write_cstring (ostream, "/* BEGINNING OF HEADER */");
|
|
|
1225 |
write_newline (ostream);
|
|
|
1226 |
write_newline (ostream);
|
|
|
1227 |
write_cstring (ostream, "#define __SID_SPLIT");
|
|
|
1228 |
write_newline (ostream);
|
|
|
1229 |
c_output_location (info, c_code_file (header),
|
|
|
1230 |
c_code_line (header));
|
|
|
1231 |
c_output_c_code (info, header);
|
|
|
1232 |
c_output_location (info, ostream_name (ostream),
|
|
|
1233 |
ostream_line (ostream) + 1);
|
|
|
1234 |
write_newline (ostream);
|
|
|
1235 |
}
|
|
|
1236 |
}
|
|
|
1237 |
}
|
|
|
1238 |
|
|
|
1239 |
static void
|
|
|
1240 |
c_output_definition PROTO_N ((entry, gclosure))
|
|
|
1241 |
PROTO_T (EntryP entry X
|
|
|
1242 |
GenericP gclosure)
|
|
|
1243 |
{
|
|
|
1244 |
if (entry_is_rule (entry)) {
|
|
|
1245 |
RuleP rule = entry_get_rule (entry);
|
|
|
1246 |
COutClosureP closure = (COutClosureP) gclosure;
|
|
|
1247 |
COutputInfoP info = closure->info;
|
|
|
1248 |
TableP table = closure->table;
|
|
|
1249 |
EntryP predicate_id = closure->predicate_id;
|
|
|
1250 |
EntryP predicate_type = closure->predicate_type;
|
|
|
1251 |
unsigned error_terminal = closure->error_terminal;
|
|
|
1252 |
|
|
|
1253 |
c_output_definition_1 (info, rule, predicate_id, predicate_type,
|
|
|
1254 |
error_terminal, table);
|
|
|
1255 |
}
|
|
|
1256 |
}
|
|
|
1257 |
|
|
|
1258 |
/*--------------------------------------------------------------------------*/
|
|
|
1259 |
|
|
|
1260 |
void
|
|
|
1261 |
c_output_parser PROTO_N ((info, grammar))
|
|
|
1262 |
PROTO_T (COutputInfoP info X
|
|
|
1263 |
GrammarP grammar)
|
|
|
1264 |
{
|
|
|
1265 |
TableP table = grammar_table (grammar);
|
|
|
1266 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1267 |
CCodeP header = c_out_info_get_header1 (info);
|
|
|
1268 |
CCodeP trailer = c_out_info_get_trailer1 (info);
|
|
|
1269 |
COutClosureT closure;
|
|
|
1270 |
|
|
|
1271 |
closure.info = info;
|
|
|
1272 |
closure.table = table;
|
|
|
1273 |
closure.predicate_id = grammar_get_predicate_id (grammar);
|
|
|
1274 |
closure.predicate_type = grammar_get_predicate_type (grammar);
|
|
|
1275 |
closure.error_terminal = grammar_max_terminal (grammar);
|
|
|
1276 |
c_output_identification (info);
|
|
|
1277 |
write_cstring (ostream, "/* BEGINNING OF HEADER */");
|
|
|
1278 |
write_newline (ostream);
|
|
|
1279 |
write_newline (ostream);
|
|
|
1280 |
if (c_out_info_get_split (info) != 0) {
|
|
|
1281 |
write_cstring (ostream, "#define __SID_SPLIT");
|
|
|
1282 |
write_newline (ostream);
|
|
|
1283 |
}
|
|
|
1284 |
c_output_location (info, c_code_file (header), c_code_line (header));
|
|
|
1285 |
c_output_c_code (info, header);
|
|
|
1286 |
c_output_location (info, ostream_name (ostream),
|
|
|
1287 |
ostream_line (ostream) + 1);
|
|
|
1288 |
write_newline (ostream);
|
|
|
1289 |
if (c_out_info_get_split (info) == 0) {
|
|
|
1290 |
write_cstring (ostream, "/* BEGINNING OF FUNCTION DECLARATIONS */");
|
|
|
1291 |
write_newline (ostream);
|
|
|
1292 |
write_newline (ostream);
|
|
|
1293 |
table_iter (table, c_output_declaration, (GenericP) info);
|
|
|
1294 |
write_newline (ostream);
|
|
|
1295 |
}
|
|
|
1296 |
c_output_static_vars (info, grammar, TRUE);
|
|
|
1297 |
write_cstring (ostream, "/* BEGINNING OF FUNCTION DEFINITIONS */");
|
|
|
1298 |
write_newline (ostream);
|
|
|
1299 |
write_newline (ostream);
|
|
|
1300 |
table_iter (table, c_output_definition, (GenericP) &closure);
|
|
|
1301 |
write_cstring (ostream, "/* BEGINNING OF TRAILER */");
|
|
|
1302 |
write_newline (ostream);
|
|
|
1303 |
write_newline (ostream);
|
|
|
1304 |
c_output_location (info, c_code_file (trailer), c_code_line (trailer));
|
|
|
1305 |
c_output_c_code (info, trailer);
|
|
|
1306 |
c_output_location (info, ostream_name (ostream),
|
|
|
1307 |
ostream_line (ostream) + 1);
|
|
|
1308 |
write_newline (ostream);
|
|
|
1309 |
write_cstring (ostream, "/* END OF FILE */");
|
|
|
1310 |
write_newline (ostream);
|
|
|
1311 |
}
|
|
|
1312 |
|
|
|
1313 |
void
|
|
|
1314 |
c_output_header PROTO_N ((info, grammar))
|
|
|
1315 |
PROTO_T (COutputInfoP info X
|
|
|
1316 |
GrammarP grammar)
|
|
|
1317 |
{
|
|
|
1318 |
TableP table = grammar_table (grammar);
|
|
|
1319 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1320 |
CCodeP header = c_out_info_get_header2 (info);
|
|
|
1321 |
CCodeP trailer = c_out_info_get_trailer2 (info);
|
|
|
1322 |
|
|
|
1323 |
c_output_identification (info);
|
|
|
1324 |
write_cstring (ostream, "/* BEGINNING OF HEADER */");
|
|
|
1325 |
write_newline (ostream);
|
|
|
1326 |
write_newline (ostream);
|
|
|
1327 |
c_output_location (info, c_code_file (header), c_code_line (header));
|
|
|
1328 |
c_output_c_code (info, header);
|
|
|
1329 |
c_output_location (info, ostream_name (ostream),
|
|
|
1330 |
ostream_line (ostream) + 1);
|
|
|
1331 |
write_newline (ostream);
|
|
|
1332 |
write_cstring (ostream, "/* BEGINNING OF FUNCTION DECLARATIONS */");
|
|
|
1333 |
write_newline (ostream);
|
|
|
1334 |
write_newline (ostream);
|
|
|
1335 |
if (c_out_info_get_split (info) != 0) {
|
|
|
1336 |
write_cstring (ostream, "#ifndef __SID_SPLIT");
|
|
|
1337 |
write_newline (ostream);
|
|
|
1338 |
table_iter (table, c_output_ext_declaration, (GenericP) info);
|
|
|
1339 |
write_cstring (ostream, "#else /* __SID_SPLIT */");
|
|
|
1340 |
write_newline (ostream);
|
|
|
1341 |
table_iter (table, c_output_declaration, (GenericP) info);
|
|
|
1342 |
c_output_static_vars (info, grammar, FALSE);
|
|
|
1343 |
write_cstring (ostream, "#endif /* __SID_SPLIT */");
|
|
|
1344 |
write_newline (ostream);
|
|
|
1345 |
} else {
|
|
|
1346 |
table_iter (table, c_output_ext_declaration, (GenericP) info);
|
|
|
1347 |
}
|
|
|
1348 |
write_newline (ostream);
|
|
|
1349 |
write_cstring (ostream, "/* BEGINNING OF TERMINAL DEFINITIONS */");
|
|
|
1350 |
write_newline (ostream);
|
|
|
1351 |
write_newline (ostream);
|
|
|
1352 |
table_iter (table, c_output_terminal, (GenericP) info);
|
|
|
1353 |
write_newline (ostream);
|
|
|
1354 |
write_cstring (ostream, "/* BEGINNING OF TRAILER */");
|
|
|
1355 |
write_newline (ostream);
|
|
|
1356 |
write_newline (ostream);
|
|
|
1357 |
c_output_location (info, c_code_file (trailer), c_code_line (trailer));
|
|
|
1358 |
c_output_c_code (info, trailer);
|
|
|
1359 |
c_output_location (info, ostream_name (ostream),
|
|
|
1360 |
ostream_line (ostream) + 1);
|
|
|
1361 |
write_newline (ostream);
|
|
|
1362 |
write_cstring (ostream, "/* END OF FILE */");
|
|
|
1363 |
write_newline (ostream);
|
|
|
1364 |
}
|
|
|
1365 |
|
|
|
1366 |
void
|
|
|
1367 |
c_output_location PROTO_N ((info, file, line))
|
|
|
1368 |
PROTO_T (COutputInfoP info X
|
|
|
1369 |
CStringP file X
|
|
|
1370 |
unsigned line)
|
|
|
1371 |
{
|
|
|
1372 |
if (c_out_info_get_lines (info)) {
|
|
|
1373 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1374 |
|
|
|
1375 |
write_cstring (ostream, "#line ");
|
|
|
1376 |
write_unsigned (ostream, line);
|
|
|
1377 |
write_cstring (ostream, " \"");
|
|
|
1378 |
write_cstring (ostream, file);
|
|
|
1379 |
write_char (ostream, '"');
|
|
|
1380 |
write_newline (ostream);
|
|
|
1381 |
}
|
|
|
1382 |
}
|
|
|
1383 |
|
|
|
1384 |
void
|
|
|
1385 |
c_output_key_message PROTO_N ((info, prefix, key, suffix, indent))
|
|
|
1386 |
PROTO_T (COutputInfoP info X
|
|
|
1387 |
CStringP prefix X
|
|
|
1388 |
KeyP key X
|
|
|
1389 |
CStringP suffix X
|
|
|
1390 |
unsigned indent)
|
|
|
1391 |
{
|
|
|
1392 |
if (c_out_info_get_lines (info)) {
|
|
|
1393 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1394 |
|
|
|
1395 |
c_output_indent (info, indent);
|
|
|
1396 |
write_cstring (ostream, prefix);
|
|
|
1397 |
write_key (ostream, key);
|
|
|
1398 |
write_cstring (ostream, suffix);
|
|
|
1399 |
write_newline (ostream);
|
|
|
1400 |
}
|
|
|
1401 |
}
|
|
|
1402 |
|
|
|
1403 |
unsigned
|
|
|
1404 |
c_out_next_label PROTO_Z ()
|
|
|
1405 |
{
|
|
|
1406 |
return (out_current_label ++);
|
|
|
1407 |
}
|
|
|
1408 |
|
|
|
1409 |
void
|
|
|
1410 |
c_output_open PROTO_N ((info, indent))
|
|
|
1411 |
PROTO_T (COutputInfoP info X
|
|
|
1412 |
unsigned indent)
|
|
|
1413 |
{
|
|
|
1414 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1415 |
|
|
|
1416 |
c_output_indent (info, indent);
|
|
|
1417 |
write_char (ostream, '{');
|
|
|
1418 |
write_newline (ostream);
|
|
|
1419 |
}
|
|
|
1420 |
|
|
|
1421 |
void
|
|
|
1422 |
c_output_close PROTO_N ((info, indent))
|
|
|
1423 |
PROTO_T (COutputInfoP info X
|
|
|
1424 |
unsigned indent)
|
|
|
1425 |
{
|
|
|
1426 |
OStreamP ostream = c_out_info_ostream (info);
|
|
|
1427 |
|
|
|
1428 |
c_output_indent (info, indent);
|
|
|
1429 |
write_char (ostream, '}');
|
|
|
1430 |
write_newline (ostream);
|
|
|
1431 |
}
|
|
|
1432 |
|
|
|
1433 |
/*
|
|
|
1434 |
* Local variables(smf):
|
|
|
1435 |
* eval: (include::add-path-entry "../os-interface" "../library")
|
|
|
1436 |
* eval: (include::add-path-entry "../transforms" "../output" "../generated")
|
|
|
1437 |
* end:
|
|
|
1438 |
**/
|