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1034 | with Ada.Integer_Wide_Wide_Text_IO;
with Ada.Strings.Wide_Wide_Unbounded.Wide_Wide_Text_IO;
with Ada.Wide_Wide_Text_IO;
with Scanner;
with NFA, ccl, misc, misc_defs, sym, ecs;
with main_body;
with Matreshka.Internals.Unicode.Ucd.Core;
with Unicode;
with Parser.Goto_Table;
use Parser.Goto_Table;
with Parser_Tokens;
use Parser_Tokens;
with Parser.Shift_Reduce;
use Parser.Shift_Reduce;
package body Parser is
package Parser_Goto renames Parser.Goto_Table;
package Parser_Shift_Reduce renames Parser.Shift_Reduce;
use Ada.Integer_Wide_Wide_Text_IO;
use Ada.Strings.Wide_Wide_Unbounded;
use Ada.Strings.Wide_Wide_Unbounded.Wide_Wide_Text_IO;
use Ada.Wide_Wide_Text_IO;
use Scanner;
use Unicode;
use Matreshka.Internals.Unicode.Ucd;
use misc_defs;
function "+" (Item : Wide_Wide_String) return Unbounded_Wide_Wide_String
renames To_Unbounded_Wide_Wide_String;
function Element is
new Matreshka.Internals.Unicode.Ucd.Generic_Element
(Matreshka.Internals.Unicode.Ucd.Core_Values,
Matreshka.Internals.Unicode.Ucd.Core_Second_Stage,
Matreshka.Internals.Unicode.Ucd.Core_Second_Stage_Access,
Matreshka.Internals.Unicode.Ucd.Core_First_Stage);
----------------------
-- Build_EOF_Action --
----------------------
-- Build_EOF_Action - build the "<<EOF>>" action for the active start
-- conditions
procedure Build_EOF_Action is
begin
Put (Temp_Action_File, "when ");
for i in 1..actvp loop
if sceof (actvsc (i)) then
Put
(Standard_Error, "multiple <<EOF>> rules for start condition ");
Put (Standard_Error, scname (actvsc (i)));
Main_Body.Aflex_End (1);
else
sceof (actvsc (i)) := true;
Put (Temp_Action_File, "YY_END_OF_BUFFER +");
Put (Temp_Action_File, scname (actvsc (i)));
Put_Line (Temp_Action_File, " + 1 ");
if (i /= actvp) then
Put_Line (Temp_Action_File, " |");
else
Put_Line (Temp_Action_File, " =>");
end if;
end if;
end loop;
misc.line_directive_out( temp_action_file );
end Build_EOF_Action;
-------------
-- YYError --
-------------
-- yyerror - eat up an error message from the parser
--
-- synopsis
-- char msg[];
-- yyerror( msg );
procedure YYError (msg : string) is
begin
null;
end YYError;
procedure YYParse is
-- Rename User Defined Packages to Internal Names.
package yy_goto_tables renames
Parser.Goto_Table;
package yy_shift_reduce_tables renames
Parser.Shift_Reduce;
package yy_tokens renames
Parser_Tokens;
use yy_tokens, yy_goto_tables, yy_shift_reduce_tables;
procedure yyerrok;
procedure yyclearin;
package yy is
-- the size of the value and state stacks
stack_size : constant Natural := 300;
-- subtype rule is natural;
subtype parse_state is natural;
-- subtype nonterminal is integer;
-- encryption constants
default : constant := -1;
first_shift_entry : constant := 0;
accept_code : constant := -3001;
error_code : constant := -3000;
-- stack data used by the parser
tos : natural := 0;
value_stack : array(0..stack_size) of yy_tokens.yystype;
state_stack : array(0..stack_size) of parse_state;
-- current input symbol and action the parser is on
action : integer;
rule_id : rule;
input_symbol : yy_tokens.token;
-- error recovery flag
error_flag : natural := 0;
-- indicates 3 - (number of valid shifts after an error occurs)
look_ahead : boolean := true;
index : integer;
-- Is Debugging option on or off
DEBUG : constant boolean := FALSE;
end yy;
function goto_state
(state : yy.parse_state;
sym : nonterminal) return yy.parse_state;
function parse_action
(state : yy.parse_state;
t : yy_tokens.token) return integer;
pragma inline(goto_state, parse_action);
function goto_state(state : yy.parse_state;
sym : nonterminal) return yy.parse_state is
index : integer;
begin
index := goto_offset(state);
while integer(goto_matrix(index).nonterm) /= sym loop
index := index + 1;
end loop;
return integer(goto_matrix(index).newstate);
end goto_state;
function parse_action(state : yy.parse_state;
t : yy_tokens.token) return integer is
index : integer;
tok_pos : integer;
default : constant integer := -1;
begin
tok_pos := yy_tokens.token'pos(t);
index := shift_reduce_offset(state);
while integer(shift_reduce_matrix(index).t) /= tok_pos and then
integer(shift_reduce_matrix(index).t) /= default
loop
index := index + 1;
end loop;
return integer(shift_reduce_matrix(index).act);
end parse_action;
-- error recovery stuff
procedure handle_error is
temp_action : integer;
begin
if yy.error_flag = 3 then -- no shift yet, clobber input.
if yy.debug then
Ada.Wide_Wide_Text_Io.Put_Line ("Ayacc.YYParse: Error Recovery Clobbers " &
yy_tokens.token'Wide_Wide_Image (yy.input_symbol));
end if;
if yy.input_symbol = yy_tokens.end_of_input then -- don't discard,
if yy.debug then
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Can't discard END_OF_INPUT, quiting...");
end if;
raise yy_tokens.syntax_error;
end if;
yy.look_ahead := true; -- get next token
return; -- and try again...
end if;
if yy.error_flag = 0 then -- brand new error
yyerror("Syntax Error");
end if;
yy.error_flag := 3;
-- find state on stack where error is a valid shift --
if yy.debug then
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Looking for state with error as valid shift");
end if;
loop
if yy.debug then
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Examining State " &
yy.parse_state'Wide_Wide_Image (yy.state_stack(yy.tos)));
end if;
temp_action := parse_action(yy.state_stack(yy.tos), error);
if temp_action >= yy.first_shift_entry then
if yy.tos = yy.stack_size then
Ada.Wide_Wide_Text_IO.Put_Line (" Stack size exceeded on state_stack");
raise yy_Tokens.syntax_error;
end if;
yy.tos := yy.tos + 1;
yy.state_stack(yy.tos) := temp_action;
exit;
end if;
Decrement_Stack_Pointer :
begin
yy.tos := yy.tos - 1;
exception
when Constraint_Error =>
yy.tos := 0;
end Decrement_Stack_Pointer;
if yy.tos = 0 then
if yy.debug then
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Error recovery popped entire stack, aborting...");
end if;
raise yy_tokens.syntax_error;
end if;
end loop;
if yy.debug then
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Shifted error token in state " &
yy.parse_state'Wide_Wide_Image (yy.state_stack(yy.tos)));
end if;
end handle_error;
-- print debugging information for a shift operation
procedure shift_debug(state_id: yy.parse_state; lexeme: yy_tokens.token) is
begin
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Shift "& yy.parse_state'Wide_Wide_Image (state_id)&" on input symbol "&
yy_tokens.token'Wide_Wide_Image (lexeme));
end;
-- print debugging information for a reduce operation
procedure reduce_debug(rule_id: rule; state_id: yy.parse_state) is
begin
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Reduce by rule "&rule'Wide_Wide_Image (rule_id)&" goto state "&
yy.parse_state'Wide_Wide_Image (state_id));
end;
-- make the parser believe that 3 valid shifts have occured.
-- used for error recovery.
procedure yyerrok is
begin
yy.error_flag := 0;
end yyerrok;
-- called to clear input symbol that caused an error.
procedure yyclearin is
begin
-- yy.input_symbol := yylex;
yy.look_ahead := true;
end yyclearin;
begin
-- initialize by pushing state 0 and getting the first input symbol
yy.state_stack(yy.tos) := 0;
loop
yy.index := shift_reduce_offset(yy.state_stack(yy.tos));
if integer(shift_reduce_matrix(yy.index).t) = yy.default then
yy.action := integer(shift_reduce_matrix(yy.index).act);
else
if yy.look_ahead then
yy.look_ahead := false;
yy.input_symbol := yylex;
end if;
yy.action :=
parse_action(yy.state_stack(yy.tos), yy.input_symbol);
end if;
if yy.action >= yy.first_shift_entry then -- SHIFT
if yy.debug then
shift_debug(yy.action, yy.input_symbol);
end if;
-- Enter new state
if yy.tos = yy.stack_size then
Ada.Wide_Wide_Text_IO.Put_Line (" Stack size exceeded on state_stack");
raise yy_Tokens.syntax_error;
end if;
yy.tos := yy.tos + 1;
yy.state_stack(yy.tos) := yy.action;
yy.value_stack(yy.tos) := yylval;
if yy.error_flag > 0 then -- indicate a valid shift
yy.error_flag := yy.error_flag - 1;
end if;
-- Advance lookahead
yy.look_ahead := true;
elsif yy.action = yy.error_code then -- ERROR
handle_error;
elsif yy.action = yy.accept_code then
if yy.debug then
Ada.Wide_Wide_Text_IO.Put_Line ("Ayacc.YYParse: Accepting Grammar...");
end if;
exit;
else -- Reduce Action
-- Convert action into a rule
yy.rule_id := -1 * yy.action;
-- Execute User Action
-- user_action(yy.rule_id);
case yy.rule_id is
when 1 =>
--# line 34 "parser.y"
-- add default rule
pat := ccl.cclinit;
ccl.cclnegate( pat );
def_rule := nfa.mkstate( -pat );
nfa.finish_rule( def_rule, false, 0, 0 );
for i in 1 .. lastsc loop
scset(i) := nfa.mkbranch( scset(i), def_rule );
end loop;
if ( spprdflt ) then
Put
(Temp_Action_File, "raise AFLEX_SCANNER_JAMMED;");
else
Put (Temp_Action_File, "ECHO");
Put_Line (Temp_Action_File, ";");
end if;
when 2 =>
--# line 59 "parser.y"
-- initialize for processing rules
-- create default DFA start condition
sym.scinstal (+"INITIAL", False);
when 5 =>
--# line 70 "parser.y"
misc.synerr( "unknown error processing section 1" );
when 7 =>
--# line 77 "parser.y"
-- these productions are separate from the s1object
-- rule because the semantics must be done before
-- we parse the remainder of an s1object
xcluflg := false;
when 8 =>
--# line 87 "parser.y"
xcluflg := true;
when 9 =>
--# line 91 "parser.y"
sym.scinstal (nmstr, xcluflg);
when 10 =>
--# line 94 "parser.y"
sym.scinstal (nmstr, xcluflg);
when 11 =>
--# line 97 "parser.y"
misc.synerr( "bad start condition list" );
when 14 =>
--# line 105 "parser.y"
-- initialize for a parse of one rule
trlcontxt := false;
variable_trail_rule := false;
varlength := false;
trailcnt := 0;
headcnt := 0;
rulelen := 0;
current_state_enum := STATE_NORMAL;
previous_continued_action := continued_action;
nfa.new_rule;
when 15 =>
--# line 120 "parser.y"
pat := nfa.link_machines( yy.value_stack (yy.tos-1), yy.value_stack (yy.tos) );
nfa.finish_rule( pat, variable_trail_rule,
headcnt, trailcnt );
for i in 1 .. actvp loop
scbol(actvsc(i)) :=
nfa.mkbranch( scbol(actvsc(i)), pat );
end loop;
if ( not bol_needed ) then
bol_needed := true;
if ( performance_report ) then
Put (Standard_Error,
"'^' operator results in sub-optimal performance");
New_Line (Standard_Error);
end if;
end if;
when 16 =>
--# line 142 "parser.y"
pat := nfa.link_machines( yy.value_stack (yy.tos-1), yy.value_stack (yy.tos) );
nfa.finish_rule( pat, variable_trail_rule,
headcnt, trailcnt );
for i in 1 .. actvp loop
scset(actvsc(i)) :=
nfa.mkbranch( scset(actvsc(i)), pat );
end loop;
when 17 =>
--# line 153 "parser.y"
pat := nfa.link_machines( yy.value_stack (yy.tos-1), yy.value_stack (yy.tos) );
nfa.finish_rule( pat, variable_trail_rule,
headcnt, trailcnt );
-- add to all non-exclusive start conditions,
-- including the default (0) start condition
for i in 1 .. lastsc loop
if ( not scxclu(i) ) then
scbol(i) := nfa.mkbranch( scbol(i), pat );
end if;
end loop;
if ( not bol_needed ) then
bol_needed := true;
if ( performance_report ) then
Put (Standard_Error,
"'^' operator results in sub-optimal performance");
New_Line (Standard_Error);
end if;
end if;
when 18 =>
--# line 178 "parser.y"
pat := nfa.link_machines( yy.value_stack (yy.tos-1), yy.value_stack (yy.tos) );
nfa.finish_rule( pat, variable_trail_rule,
headcnt, trailcnt );
for i in 1 .. lastsc loop
if ( not scxclu(i) ) then
scset(i) := nfa.mkbranch( scset(i), pat );
end if;
end loop;
when 19 =>
--# line 191 "parser.y"
Build_EOF_Action;
when 20 =>
--# line 194 "parser.y"
-- this EOF applies only to the INITIAL start cond.
actvp := 1;
actvsc(actvp) := 1;
Build_EOF_Action;
when 21 =>
--# line 202 "parser.y"
misc.synerr( "unrecognized rule" );
when 23 =>
--# line 209 "parser.y"
scnum := sym.sclookup (nmstr);
if (scnum = 0 ) then
Put
(Standard_Error, "undeclared start condition ");
Put (Standard_Error, nmstr);
Main_Body.Aflex_End (1);
else
actvp := actvp + 1;
actvsc(actvp) := scnum;
end if;
when 24 =>
--# line 224 "parser.y"
scnum := sym.sclookup (nmstr);
if (scnum = 0 ) then
Put
(Standard_Error, "undeclared start condition ");
Put (Standard_Error, nmstr);
Main_Body.Aflex_End (1);
else
actvp := 1;
actvsc(actvp) := scnum;
end if;
when 25 =>
--# line 239 "parser.y"
misc.synerr( "bad start condition list" );
when 26 =>
--# line 243 "parser.y"
if trlcontxt then
misc.synerr( "trailing context used twice" );
yyval := nfa.mkstate( SYM_EPSILON );
else
trlcontxt := true;
if ( not varlength ) then
headcnt := rulelen;
end if;
rulelen := rulelen + 1;
trailcnt := 1;
eps := nfa.mkstate( SYM_EPSILON );
yyval := nfa.link_machines( eps,
nfa.mkstate( CHARACTER'POS(ASCII.LF) ) );
end if;
when 27 =>
--# line 264 "parser.y"
yyval := nfa.mkstate( SYM_EPSILON );
if ( trlcontxt ) then
if ( varlength and (headcnt = 0) ) then
-- both head and trail are variable-length
variable_trail_rule := true;
else
trailcnt := rulelen;
end if;
end if;
when 28 =>
--# line 279 "parser.y"
varlength := true;
yyval := nfa.mkor( yy.value_stack (yy.tos-2), yy.value_stack (yy.tos) );
when 29 =>
--# line 286 "parser.y"
if ( transchar(lastst(yy.value_stack (yy.tos))) /= SYM_EPSILON ) then
-- provide final transition \now/ so it
-- will be marked as a trailing context
-- state
yy.value_stack (yy.tos) := nfa.link_machines( yy.value_stack (yy.tos), nfa.mkstate( SYM_EPSILON ) );
end if;
nfa.mark_beginning_as_normal( yy.value_stack (yy.tos) );
current_state_enum := STATE_NORMAL;
if ( previous_continued_action ) then
-- we need to treat this as variable trailing
-- context so that the backup does not happen
-- in the action but before the action switch
-- statement. If the backup happens in the
-- action, then the rules "falling into" this
-- one's action will *also* do the backup,
-- erroneously.
if ( (not varlength) or headcnt /= 0 ) then
Put (Standard_Error,
"aflex: warning - trailing context rule at line");
Put (Standard_Error, Linenum);
Put (Standard_Error,
"made variable because of preceding '|' action" );
Put (Standard_Error, Linenum);
end if;
-- mark as variable
varlength := true;
headcnt := 0;
end if;
if ( varlength and (headcnt = 0) ) then
-- variable trailing context rule
-- mark the first part of the rule as the accepting
-- "head" part of a trailing context rule
-- by the way, we didn't do this at the beginning
-- of this production because back then
-- current_state_enum was set up for a trail
-- rule, and add_accept() can create a new
-- state ...
nfa.add_accept( yy.value_stack (yy.tos-1),
misc.set_yy_trailing_head_mask(num_rules) );
end if;
yyval := nfa.link_machines( yy.value_stack (yy.tos-1), yy.value_stack (yy.tos) );
when 30 =>
--# line 340 "parser.y"
yyval := yy.value_stack (yy.tos);
when 31 =>
--# line 345 "parser.y"
-- this rule is separate from the others for "re" so
-- that the reduction will occur before the trailing
-- series is parsed
if ( trlcontxt ) then
misc.synerr( "trailing context used twice" );
else
trlcontxt := true;
end if;
if ( varlength ) then
-- we hope the trailing context is fixed-length
varlength := false;
else
headcnt := rulelen;
end if;
rulelen := 0;
current_state_enum := STATE_TRAILING_CONTEXT;
yyval := yy.value_stack (yy.tos-1);
when 32 =>
--# line 371 "parser.y"
-- this is where concatenation of adjacent patterns
-- gets done
yyval := nfa.link_machines( yy.value_stack (yy.tos-1), yy.value_stack (yy.tos) );
when 33 =>
--# line 379 "parser.y"
yyval := yy.value_stack (yy.tos);
when 34 =>
--# line 383 "parser.y"
varlength := true;
yyval := nfa.mkclos( yy.value_stack (yy.tos-1) );
when 35 =>
--# line 390 "parser.y"
varlength := true;
yyval := nfa.mkposcl( yy.value_stack (yy.tos-1) );
when 36 =>
--# line 397 "parser.y"
varlength := true;
yyval := nfa.mkopt( yy.value_stack (yy.tos-1) );
when 37 =>
--# line 404 "parser.y"
varlength := true;
if ( (yy.value_stack (yy.tos-3) > yy.value_stack (yy.tos-1)) or (yy.value_stack (yy.tos-3) < 0) ) then
misc.synerr( "bad iteration values" );
yyval := yy.value_stack (yy.tos-5);
else
if ( yy.value_stack (yy.tos-3) = 0 ) then
yyval := nfa.mkopt( nfa.mkrep( yy.value_stack (yy.tos-5), yy.value_stack (yy.tos-3), yy.value_stack (yy.tos-1) ) );
else
yyval := nfa.mkrep( yy.value_stack (yy.tos-5), yy.value_stack (yy.tos-3), yy.value_stack (yy.tos-1) );
end if;
end if;
when 38 =>
--# line 420 "parser.y"
varlength := true;
if ( yy.value_stack (yy.tos-2) <= 0 ) then
misc.synerr( "iteration value must be positive" );
yyval := yy.value_stack (yy.tos-4);
else
yyval := nfa.mkrep( yy.value_stack (yy.tos-4), yy.value_stack (yy.tos-2), INFINITY );
end if;
when 39 =>
--# line 432 "parser.y"
-- the singleton could be something like "(foo)",
-- in which case we have no idea what its length
-- is, so we punt here.
varlength := true;
if ( yy.value_stack (yy.tos-1) <= 0 ) then
misc.synerr( "iteration value must be positive" );
yyval := yy.value_stack (yy.tos-3);
else
yyval := nfa.link_machines( yy.value_stack (yy.tos-3), nfa.copysingl( yy.value_stack (yy.tos-3), yy.value_stack (yy.tos-1) - 1 ) );
end if;
when 40 =>
--# line 448 "parser.y"
if ( not madeany ) then
-- create the '.' character class
anyccl := ccl.cclinit;
ccl.ccl_add( anyccl, Unicode.LF );
ccl.cclnegate( anyccl );
if ( useecs ) then
ecs.mkeccl(
ccltbl(cclmap(anyccl)..cclmap(anyccl) + ccllen(anyccl)),
ccllen(anyccl), nextecm,
ecgroup, CSIZE );
end if;
madeany := true;
end if;
rulelen := rulelen + 1;
yyval := nfa.mkstate( -anyccl );
when 41 =>
--# line 470 "parser.y"
if ( not cclsorted ) then
-- sort characters for fast searching. We use a
-- shell sort since this list could be large.
-- misc.cshell( ccltbl + cclmap($1), ccllen($1) );
misc.cshell( ccltbl(cclmap(yy.value_stack (yy.tos))..cclmap(yy.value_stack (yy.tos)) + ccllen(yy.value_stack (yy.tos))),
ccllen(yy.value_stack (yy.tos)) );
end if;
if ( useecs ) then
ecs.mkeccl( ccltbl(cclmap(yy.value_stack (yy.tos))..cclmap(yy.value_stack (yy.tos)) + ccllen(yy.value_stack (yy.tos))),
ccllen(yy.value_stack (yy.tos)),nextecm, ecgroup, CSIZE );
end if;
rulelen := rulelen + 1;
yyval := nfa.mkstate( -yy.value_stack (yy.tos) );
when 42 =>
--# line 491 "parser.y"
rulelen := rulelen + 1;
yyval := nfa.mkstate( -yy.value_stack (yy.tos) );
when 43 =>
--# line 498 "parser.y"
yyval := yy.value_stack (yy.tos-1);
when 44 =>
--# line 501 "parser.y"
yyval := yy.value_stack (yy.tos-1);
when 45 =>
--# line 504 "parser.y"
rulelen := rulelen + 1;
if ( yy.value_stack (yy.tos) = CHARACTER'POS(ASCII.NUL) ) then
misc.synerr( "null in rule" );
end if;
if ( caseins and (yy.value_stack (yy.tos) >= CHARACTER'POS('A')) and (yy.value_stack (yy.tos) <= CHARACTER'POS('Z')) ) then
yy.value_stack (yy.tos) := misc.clower( yy.value_stack (yy.tos) );
end if;
yyval := nfa.mkstate( yy.value_stack (yy.tos) );
when 46 =>
--# line 518 "parser.y"
rulelen := rulelen + 1;
declare
P : Matreshka.Internals.Unicode.Ucd.Boolean_Properties :=
Matreshka.Internals.Unicode.Ucd.Boolean_Properties'Val ((abs yy.value_stack (yy.tos)) - 1);
N : Boolean := yy.value_stack (yy.tos) < 0;
begin
if N then
yyval := Boolean_NCCL (P);
else
yyval := Boolean_CCL (P);
end if;
if yyval = 0 then
cclsorted := true;
lastchar := 0;
yyval := ccl.cclinit;
for J in Unicode_Character'Range loop
if Element (Matreshka.Internals.Unicode.Ucd.Core.Property, Unicode_Character'Pos (J)).B (P) then
ccl.ccl_add (yyval, J);
lastchar := Unicode_Character'Pos (J);
end if;
end loop;
if ( useecs ) then
ecs.mkeccl( ccltbl(cclmap(yyval)..cclmap(yyval) + ccllen(yyval)),
ccllen(yyval),nextecm, ecgroup, CSIZE );
end if;
if N then
ccl.cclnegate( yyval );
Boolean_NCCL (P) := yyval;
else
Boolean_CCL (P) := yyval;
end if;
end if;
yyval := nfa.mkstate( -yyval );
end;
when 47 =>
--# line 566 "parser.y"
yyval := yy.value_stack (yy.tos-1);
when 48 =>
--# line 569 "parser.y"
-- *Sigh* - to be compatible Unix lex, negated ccls
-- match newlines
ccl.cclnegate( yy.value_stack (yy.tos-1) );
yyval := yy.value_stack (yy.tos-1);
when 49 =>
--# line 578 "parser.y"
if ( yy.value_stack (yy.tos-2) > yy.value_stack (yy.tos) ) then
misc.synerr( "negative range in character class" );
else
if ( caseins ) then
if ( (yy.value_stack (yy.tos-2) >= CHARACTER'POS('A')) and (yy.value_stack (yy.tos-2) <= CHARACTER'POS('Z')) ) then
yy.value_stack (yy.tos-2) := misc.clower( yy.value_stack (yy.tos-2) );
end if;
if ( (yy.value_stack (yy.tos) >= CHARACTER'POS('A')) and (yy.value_stack (yy.tos) <= CHARACTER'POS('Z')) ) then
yy.value_stack (yy.tos) := misc.clower( yy.value_stack (yy.tos) );
end if;
end if;
for J in yy.value_stack (yy.tos-2) .. yy.value_stack (yy.tos) loop
ccl.ccl_add (yy.value_stack (yy.tos-3), Unicode_Character'Val (J));
end loop;
-- keep track if this ccl is staying in
-- alphabetical order
cclsorted := cclsorted and (yy.value_stack (yy.tos-2) > lastchar);
lastchar := yy.value_stack (yy.tos);
end if;
yyval := yy.value_stack (yy.tos-3);
when 50 =>
--# line 606 "parser.y"
if ( caseins ) then
if ( (yy.value_stack (yy.tos) >= CHARACTER'POS('A')) and (yy.value_stack (yy.tos) <= CHARACTER'POS('Z')) ) then
yy.value_stack (yy.tos) := misc.clower( yy.value_stack (yy.tos) );
end if;
end if;
ccl.ccl_add (yy.value_stack (yy.tos-1), Unicode_Character'Val (yy.value_stack (yy.tos)));
cclsorted := cclsorted and (yy.value_stack (yy.tos) > lastchar);
lastchar := yy.value_stack (yy.tos);
yyval := yy.value_stack (yy.tos-1);
when 51 =>
--# line 618 "parser.y"
declare
P : Matreshka.Internals.Unicode.Ucd.Boolean_Properties :=
Matreshka.Internals.Unicode.Ucd.Boolean_Properties'Val ((abs yy.value_stack (yy.tos)) - 1);
N : Boolean := yy.value_stack (yy.tos) < 0;
begin
cclsorted := false;
lastchar := 0;
for J in Unicode_Character'Range loop
if N xor Element (Matreshka.Internals.Unicode.Ucd.Core.Property, Unicode_Character'Pos (J)).B (P) then
ccl.ccl_add (yy.value_stack (yy.tos-1), J);
end if;
end loop;
yyval := yy.value_stack (yy.tos-1);
end;
when 52 =>
--# line 639 "parser.y"
cclsorted := true;
lastchar := 0;
yyval := ccl.cclinit;
when 53 =>
--# line 647 "parser.y"
if ( caseins ) then
if ( (yy.value_stack (yy.tos) >= CHARACTER'POS('A')) and (yy.value_stack (yy.tos) <= CHARACTER'POS('Z')) ) then
yy.value_stack (yy.tos) := misc.clower( yy.value_stack (yy.tos) );
end if;
end if;
rulelen := rulelen + 1;
yyval := nfa.link_machines( yy.value_stack (yy.tos-1), nfa.mkstate( yy.value_stack (yy.tos) ) );
when 54 =>
--# line 660 "parser.y"
yyval := nfa.mkstate( SYM_EPSILON );
when others => null;
end case;
-- Pop RHS states and goto next state
yy.tos := yy.tos - rule_length(yy.rule_id) + 1;
if yy.tos > yy.stack_size then
Ada.Wide_Wide_Text_IO.Put_Line (" Stack size exceeded on state_stack");
raise yy_Tokens.syntax_error;
end if;
yy.state_stack(yy.tos) := goto_state(yy.state_stack(yy.tos-1) ,
get_lhs_rule(yy.rule_id));
yy.value_stack(yy.tos) := yyval;
if yy.debug then
reduce_debug(yy.rule_id,
goto_state(yy.state_stack(yy.tos - 1),
get_lhs_rule(yy.rule_id)));
end if;
end if;
end loop;
end yyparse;
end Parser;
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