sdl92Parser.py 1.04 MB
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# $ANTLR 3.1.3 Mar 17, 2009 19:23:44 sdl92.g 2015-11-22 08:45:15
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import sys
from antlr3 import *
from antlr3.compat import set, frozenset

from antlr3.tree import *



# for convenience in actions
HIDDEN = BaseRecognizer.HIDDEN

# token types
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NUMBER_OF_INSTANCES=61
COMMENT2=219
MANTISSA=176
ROUTE=82
MOD=168
GROUND=45
PARAM=66
NOT=170
SEQOF=85
TEXTAREA_CONTENT=109
EOF=-1
ACTION=4
IMPORT=180
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CREATE=158
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FPAR=44
NEXTSTATE=60
RETURN=81
THIS=159
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CHANNEL=13
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VIAPATH=120
ENDCONNECTION=135
EXPORT=33
EQ=152
GEODE=184
INFORMAL_TEXT=50
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D=193
E=196
F=203
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GE=157
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G=204
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A=190
IMPLIES=161
B=212
C=194
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L=195
M=200
N=191
O=205
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STOPIF=97
TERMINATOR=106
H=206
I=202
J=213
ELSE=27
K=197
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U=209
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T=207
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W=211
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V=210
STOP=96
TYPE_INSTANCE=114
Q=220
INT=133
P=198
S=201
R=199
VALUE=116
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Y=192
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X=208
FI=36
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Z=221
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MINUS_INFINITY=175
WS=218
OUT=132
NONE=143
INPUT_NONE=53
CONSTANT=22
GT=154
CALL=148
END=186
FLOATING_LABEL=42
IFTHENELSE=48
POINT=71
INPUT=52
ENDSUBSTRUCTURE=140
FLOAT=41
SUBSTRUCTURE=139
T__223=223
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PAREN=69
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T__222=222
ASTERISK=138
INOUT=51
STR=215
STIMULUS=95
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SELECTOR=84
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THEN=110
ENDDECISION=150
OPEN_RANGE=63
SIGNAL=88
ENDSYSTEM=121
PLUS=164
CHOICE=14
TASK_BODY=105
PARAMS=68
CLOSED_RANGE=16
STATE=91
STATELIST=94
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TO=112
ASSIG_OP=187
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SIGNALROUTE=127
ENDSYNTYPE=30
SORT=90
SET=87
TEXT=107
SEMI=136
TEXTAREA=108
T__228=228
T__224=224
T__225=225
T__226=226
T__227=227
BLOCK=12
CIF=15
START=134
DECISION=25
DIV=167
PROCESS=76
STRING=98
INPUTLIST=54
EXTERNAL=35
LT=155
EXPONENT=178
TRANSITION=113
ENDBLOCK=126
RESET=80
ENDNEWTYPE=29
SIGNAL_LIST=89
ENDTEXT=31
CONNECTION=21
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SYSTEM=103
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CONNECT=20
STATE_PARTITION_CONNECTION=93
L_PAREN=145
PROCEDURE_CALL=74
BASE=177
COMMENT=17
SYNONYM=100
ENDALTERNATIVE=149
ARRAY=8
ACTIVE=179
ENDFOR=160
FIELD_NAME=38
VIEW=181
OCTSTR=62
EMPTYSTR=28
PFPAR=70
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ENDCHANNEL=123
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NULL=173
ANSWER=7
CONDITIONAL=19
PRIMARY=72
TASK=104
REFERENCED=129
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ALPHA=216
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SEQUENCE=86
VARIABLE=117
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PRIORITY=144
SPECIFIC=183
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AGGREGATION=141
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OR=162
COMPOSITE_STATE=18
FIELD=37
USE=115
FROM=124
ENDPROCEDURE=131
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FALSE=172
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OUTPUT=64
SYNONYM_LIST=101
APPEND=166
L_BRACKET=188
DIGITS=26
HYPERLINK=46
NEWTYPE=59
Exponent=217
FOR=43
ENDSTATE=137
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PROCEDURE_NAME=75
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CONSTANTS=23
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ID=122
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AND=128
FLOAT2=40
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IF=47
IN=49
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PROVIDED=77
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COMMA=147
ALL=5
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ASNFILENAME=185
DOT=214
EXPRESSION=34
WITH=125
BITSTR=11
XOR=163
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DASH=165
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DCL=24
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ENDPROCESS=130
DEFAULT=142
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RANGE=79
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VIA=119
SAVE=83
LITERAL=57
STRUCT=99
FIELDS=39
REM=169
STATE_AGGREGATION=92
TRUE=171
R_BRACKET=189
PROCEDURE=73
JOIN=55
R_PAREN=146
OUTPUT_BODY=65
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ANY=151
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NEQ=153
QUESTION=78
LABEL=56
PARAMNAMES=67
PLUS_INFINITY=174
ASN1=9
ENTRY_POINT=32
KEEP=182
NEG=58
ASSIGN=10
VARIABLES=118
ALTERNATIVE=6
SYNTYPE=102
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TIMER=111
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LE=156
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# token names
tokenNames = [
    "<invalid>", "<EOR>", "<DOWN>", "<UP>", 
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    "ACTION", "ALL", "ALTERNATIVE", "ANSWER", "ARRAY", "ASN1", "ASSIGN", 
    "BITSTR", "BLOCK", "CHANNEL", "CHOICE", "CIF", "CLOSED_RANGE", "COMMENT", 
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    "COMPOSITE_STATE", "CONDITIONAL", "CONNECT", "CONNECTION", "CONSTANT", 
    "CONSTANTS", "DCL", "DECISION", "DIGITS", "ELSE", "EMPTYSTR", "ENDNEWTYPE", 
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    "ENDSYNTYPE", "ENDTEXT", "ENTRY_POINT", "EXPORT", "EXPRESSION", "EXTERNAL", 
    "FI", "FIELD", "FIELD_NAME", "FIELDS", "FLOAT2", "FLOAT", "FLOATING_LABEL", 
    "FOR", "FPAR", "GROUND", "HYPERLINK", "IF", "IFTHENELSE", "IN", "INFORMAL_TEXT", 
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    "INOUT", "INPUT", "INPUT_NONE", "INPUTLIST", "JOIN", "LABEL", "LITERAL", 
    "NEG", "NEWTYPE", "NEXTSTATE", "NUMBER_OF_INSTANCES", "OCTSTR", "OPEN_RANGE", 
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    "OUTPUT", "OUTPUT_BODY", "PARAM", "PARAMNAMES", "PARAMS", "PAREN", "PFPAR", 
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    "POINT", "PRIMARY", "PROCEDURE", "PROCEDURE_CALL", "PROCEDURE_NAME", 
    "PROCESS", "PROVIDED", "QUESTION", "RANGE", "RESET", "RETURN", "ROUTE", 
    "SAVE", "SELECTOR", "SEQOF", "SEQUENCE", "SET", "SIGNAL", "SIGNAL_LIST", 
    "SORT", "STATE", "STATE_AGGREGATION", "STATE_PARTITION_CONNECTION", 
    "STATELIST", "STIMULUS", "STOP", "STOPIF", "STRING", "STRUCT", "SYNONYM", 
    "SYNONYM_LIST", "SYNTYPE", "SYSTEM", "TASK", "TASK_BODY", "TERMINATOR", 
    "TEXT", "TEXTAREA", "TEXTAREA_CONTENT", "THEN", "TIMER", "TO", "TRANSITION", 
    "TYPE_INSTANCE", "USE", "VALUE", "VARIABLE", "VARIABLES", "VIA", "VIAPATH", 
    "ENDSYSTEM", "ID", "ENDCHANNEL", "FROM", "WITH", "ENDBLOCK", "SIGNALROUTE", 
    "AND", "REFERENCED", "ENDPROCESS", "ENDPROCEDURE", "OUT", "INT", "START", 
    "ENDCONNECTION", "SEMI", "ENDSTATE", "ASTERISK", "SUBSTRUCTURE", "ENDSUBSTRUCTURE", 
    "AGGREGATION", "DEFAULT", "NONE", "PRIORITY", "L_PAREN", "R_PAREN", 
    "COMMA", "CALL", "ENDALTERNATIVE", "ENDDECISION", "ANY", "EQ", "NEQ", 
    "GT", "LT", "LE", "GE", "CREATE", "THIS", "ENDFOR", "IMPLIES", "OR", 
    "XOR", "PLUS", "DASH", "APPEND", "DIV", "MOD", "REM", "NOT", "TRUE", 
    "FALSE", "NULL", "PLUS_INFINITY", "MINUS_INFINITY", "MANTISSA", "BASE", 
    "EXPONENT", "ACTIVE", "IMPORT", "VIEW", "KEEP", "SPECIFIC", "GEODE", 
    "ASNFILENAME", "END", "ASSIG_OP", "L_BRACKET", "R_BRACKET", "A", "N", 
    "Y", "D", "C", "L", "E", "K", "P", "R", "M", "S", "I", "F", "G", "O", 
    "H", "T", "X", "U", "V", "W", "B", "J", "DOT", "STR", "ALPHA", "Exponent", 
    "WS", "COMMENT2", "Q", "Z", "':'", "'!'", "'(.'", "'.)'", "'ERROR'", 
    "'/* CIF'", "'*/'"
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]




class sdl92Parser(Parser):
    grammarFileName = "sdl92.g"
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    antlr_version = version_str_to_tuple("3.1.3 Mar 17, 2009 19:23:44")
    antlr_version_str = "3.1.3 Mar 17, 2009 19:23:44"
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    tokenNames = tokenNames

    def __init__(self, input, state=None, *args, **kwargs):
        if state is None:
            state = RecognizerSharedState()

        super(sdl92Parser, self).__init__(input, state, *args, **kwargs)

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        self.dfa25 = self.DFA25(
            self, 25,
            eot = self.DFA25_eot,
            eof = self.DFA25_eof,
            min = self.DFA25_min,
            max = self.DFA25_max,
            accept = self.DFA25_accept,
            special = self.DFA25_special,
            transition = self.DFA25_transition
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            )

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        self.dfa38 = self.DFA38(
            self, 38,
            eot = self.DFA38_eot,
            eof = self.DFA38_eof,
            min = self.DFA38_min,
            max = self.DFA38_max,
            accept = self.DFA38_accept,
            special = self.DFA38_special,
            transition = self.DFA38_transition
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            )

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        self.dfa45 = self.DFA45(
            self, 45,
            eot = self.DFA45_eot,
            eof = self.DFA45_eof,
            min = self.DFA45_min,
            max = self.DFA45_max,
            accept = self.DFA45_accept,
            special = self.DFA45_special,
            transition = self.DFA45_transition
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            )

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        self.dfa51 = self.DFA51(
            self, 51,
            eot = self.DFA51_eot,
            eof = self.DFA51_eof,
            min = self.DFA51_min,
            max = self.DFA51_max,
            accept = self.DFA51_accept,
            special = self.DFA51_special,
            transition = self.DFA51_transition
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            )

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        self.dfa52 = self.DFA52(
            self, 52,
            eot = self.DFA52_eot,
            eof = self.DFA52_eof,
            min = self.DFA52_min,
            max = self.DFA52_max,
            accept = self.DFA52_accept,
            special = self.DFA52_special,
            transition = self.DFA52_transition
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            )

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        self.dfa56 = self.DFA56(
            self, 56,
            eot = self.DFA56_eot,
            eof = self.DFA56_eof,
            min = self.DFA56_min,
            max = self.DFA56_max,
            accept = self.DFA56_accept,
            special = self.DFA56_special,
            transition = self.DFA56_transition
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            )

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        self.dfa76 = self.DFA76(
            self, 76,
            eot = self.DFA76_eot,
            eof = self.DFA76_eof,
            min = self.DFA76_min,
            max = self.DFA76_max,
            accept = self.DFA76_accept,
            special = self.DFA76_special,
            transition = self.DFA76_transition
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            )

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        self.dfa82 = self.DFA82(
            self, 82,
            eot = self.DFA82_eot,
            eof = self.DFA82_eof,
            min = self.DFA82_min,
            max = self.DFA82_max,
            accept = self.DFA82_accept,
            special = self.DFA82_special,
            transition = self.DFA82_transition
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            )

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        self.dfa83 = self.DFA83(
            self, 83,
            eot = self.DFA83_eot,
            eof = self.DFA83_eof,
            min = self.DFA83_min,
            max = self.DFA83_max,
            accept = self.DFA83_accept,
            special = self.DFA83_special,
            transition = self.DFA83_transition
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            )

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        self.dfa84 = self.DFA84(
            self, 84,
            eot = self.DFA84_eot,
            eof = self.DFA84_eof,
            min = self.DFA84_min,
            max = self.DFA84_max,
            accept = self.DFA84_accept,
            special = self.DFA84_special,
            transition = self.DFA84_transition
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            )

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        self.dfa88 = self.DFA88(
            self, 88,
            eot = self.DFA88_eot,
            eof = self.DFA88_eof,
            min = self.DFA88_min,
            max = self.DFA88_max,
            accept = self.DFA88_accept,
            special = self.DFA88_special,
            transition = self.DFA88_transition
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            )

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        self.dfa101 = self.DFA101(
            self, 101,
            eot = self.DFA101_eot,
            eof = self.DFA101_eof,
            min = self.DFA101_min,
            max = self.DFA101_max,
            accept = self.DFA101_accept,
            special = self.DFA101_special,
            transition = self.DFA101_transition
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            )

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        self.dfa102 = self.DFA102(
            self, 102,
            eot = self.DFA102_eot,
            eof = self.DFA102_eof,
            min = self.DFA102_min,
            max = self.DFA102_max,
            accept = self.DFA102_accept,
            special = self.DFA102_special,
            transition = self.DFA102_transition
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            )

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        self.dfa110 = self.DFA110(
            self, 110,
            eot = self.DFA110_eot,
            eof = self.DFA110_eof,
            min = self.DFA110_min,
            max = self.DFA110_max,
            accept = self.DFA110_accept,
            special = self.DFA110_special,
            transition = self.DFA110_transition
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            )

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        self.dfa107 = self.DFA107(
            self, 107,
            eot = self.DFA107_eot,
            eof = self.DFA107_eof,
            min = self.DFA107_min,
            max = self.DFA107_max,
            accept = self.DFA107_accept,
            special = self.DFA107_special,
            transition = self.DFA107_transition
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            )

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        self.dfa108 = self.DFA108(
            self, 108,
            eot = self.DFA108_eot,
            eof = self.DFA108_eof,
            min = self.DFA108_min,
            max = self.DFA108_max,
            accept = self.DFA108_accept,
            special = self.DFA108_special,
            transition = self.DFA108_transition
            )

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        self.dfa109 = self.DFA109(
            self, 109,
            eot = self.DFA109_eot,
            eof = self.DFA109_eof,
            min = self.DFA109_min,
            max = self.DFA109_max,
            accept = self.DFA109_accept,
            special = self.DFA109_special,
            transition = self.DFA109_transition
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            )

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        self.dfa111 = self.DFA111(
            self, 111,
            eot = self.DFA111_eot,
            eof = self.DFA111_eof,
            min = self.DFA111_min,
            max = self.DFA111_max,
            accept = self.DFA111_accept,
            special = self.DFA111_special,
            transition = self.DFA111_transition
            )

        self.dfa112 = self.DFA112(
            self, 112,
            eot = self.DFA112_eot,
            eof = self.DFA112_eof,
            min = self.DFA112_min,
            max = self.DFA112_max,
            accept = self.DFA112_accept,
            special = self.DFA112_special,
            transition = self.DFA112_transition
            )

        self.dfa123 = self.DFA123(
            self, 123,
            eot = self.DFA123_eot,
            eof = self.DFA123_eof,
            min = self.DFA123_min,
            max = self.DFA123_max,
            accept = self.DFA123_accept,
            special = self.DFA123_special,
            transition = self.DFA123_transition
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            )

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        self.dfa121 = self.DFA121(
            self, 121,
            eot = self.DFA121_eot,
            eof = self.DFA121_eof,
            min = self.DFA121_min,
            max = self.DFA121_max,
            accept = self.DFA121_accept,
            special = self.DFA121_special,
            transition = self.DFA121_transition
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            )

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        self.dfa131 = self.DFA131(
            self, 131,
            eot = self.DFA131_eot,
            eof = self.DFA131_eof,
            min = self.DFA131_min,
            max = self.DFA131_max,
            accept = self.DFA131_accept,
            special = self.DFA131_special,
            transition = self.DFA131_transition
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            )

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        self.dfa137 = self.DFA137(
            self, 137,
            eot = self.DFA137_eot,
            eof = self.DFA137_eof,
            min = self.DFA137_min,
            max = self.DFA137_max,
            accept = self.DFA137_accept,
            special = self.DFA137_special,
            transition = self.DFA137_transition
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            )

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        self.dfa170 = self.DFA170(
            self, 170,
            eot = self.DFA170_eot,
            eof = self.DFA170_eof,
            min = self.DFA170_min,
            max = self.DFA170_max,
            accept = self.DFA170_accept,
            special = self.DFA170_special,
            transition = self.DFA170_transition
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            )

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        self.dfa175 = self.DFA175(
            self, 175,
            eot = self.DFA175_eot,
            eof = self.DFA175_eof,
            min = self.DFA175_min,
            max = self.DFA175_max,
            accept = self.DFA175_accept,
            special = self.DFA175_special,
            transition = self.DFA175_transition
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            )

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        self.dfa176 = self.DFA176(
            self, 176,
            eot = self.DFA176_eot,
            eof = self.DFA176_eof,
            min = self.DFA176_min,
            max = self.DFA176_max,
            accept = self.DFA176_accept,
            special = self.DFA176_special,
            transition = self.DFA176_transition
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            )

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        self.dfa180 = self.DFA180(
            self, 180,
            eot = self.DFA180_eot,
            eof = self.DFA180_eof,
            min = self.DFA180_min,
            max = self.DFA180_max,
            accept = self.DFA180_accept,
            special = self.DFA180_special,
            transition = self.DFA180_transition
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            )

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        self.dfa189 = self.DFA189(
            self, 189,
            eot = self.DFA189_eot,
            eof = self.DFA189_eof,
            min = self.DFA189_min,
            max = self.DFA189_max,
            accept = self.DFA189_accept,
            special = self.DFA189_special,
            transition = self.DFA189_transition
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            )






        self._adaptor = None
        self.adaptor = CommonTreeAdaptor()
                


        
    def getTreeAdaptor(self):
        return self._adaptor

    def setTreeAdaptor(self, adaptor):
        self._adaptor = adaptor

    adaptor = property(getTreeAdaptor, setTreeAdaptor)


    class pr_file_return(ParserRuleReturnScope):
        def __init__(self):
            super(sdl92Parser.pr_file_return, self).__init__()

            self.tree = None




    # $ANTLR start "pr_file"
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    # sdl92.g:145:1: pr_file : ( use_clause | system_definition | process_definition )+ ;
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    def pr_file(self, ):

        retval = self.pr_file_return()
        retval.start = self.input.LT(1)

        root_0 = None

        use_clause1 = None

        system_definition2 = None

        process_definition3 = None



        try:
            try:
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                # sdl92.g:146:9: ( ( use_clause | system_definition | process_definition )+ )
                # sdl92.g:146:17: ( use_clause | system_definition | process_definition )+
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                pass 
                root_0 = self._adaptor.nil()

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                # sdl92.g:146:17: ( use_clause | system_definition | process_definition )+
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                cnt1 = 0
                while True: #loop1
                    alt1 = 4
                    LA1 = self.input.LA(1)
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                    if LA1 == 227:
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                        LA1_2 = self.input.LA(2)

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                        if (LA1_2 == ANSWER or LA1_2 == COMMENT or LA1_2 == CONNECT or LA1_2 == DECISION or LA1_2 == INPUT or (JOIN <= LA1_2 <= LABEL) or LA1_2 == NEXTSTATE or LA1_2 == OUTPUT or (PROCEDURE <= LA1_2 <= PROCEDURE_CALL) or (PROCESS <= LA1_2 <= PROVIDED) or LA1_2 == RETURN or LA1_2 == STATE or LA1_2 == STOP or LA1_2 == TASK or LA1_2 == TEXT or LA1_2 == START) :
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                            alt1 = 3
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                        elif (LA1_2 == KEEP) :
                            alt1 = 1
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                    elif LA1 == USE:
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                        alt1 = 1
                    elif LA1 == SYSTEM:
                        alt1 = 2
                    elif LA1 == PROCESS:
                        alt1 = 3

                    if alt1 == 1:
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                        # sdl92.g:146:18: use_clause
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                        pass 
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                        self._state.following.append(self.FOLLOW_use_clause_in_pr_file1364)
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                        use_clause1 = self.use_clause()

                        self._state.following.pop()
                        if self._state.backtracking == 0:
                            self._adaptor.addChild(root_0, use_clause1.tree)


                    elif alt1 == 2:
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                        # sdl92.g:147:19: system_definition
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                        pass 
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                        self._state.following.append(self.FOLLOW_system_definition_in_pr_file1384)
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                        system_definition2 = self.system_definition()

                        self._state.following.pop()
                        if self._state.backtracking == 0:
                            self._adaptor.addChild(root_0, system_definition2.tree)


                    elif alt1 == 3:
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                        # sdl92.g:148:19: process_definition
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                        pass 
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                        self._state.following.append(self.FOLLOW_process_definition_in_pr_file1404)
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                        process_definition3 = self.process_definition()

                        self._state.following.pop()
                        if self._state.backtracking == 0:
                            self._adaptor.addChild(root_0, process_definition3.tree)


                    else:
                        if cnt1 >= 1:
                            break #loop1

                        if self._state.backtracking > 0:
                            raise BacktrackingFailed

                        eee = EarlyExitException(1, self.input)
                        raise eee

                    cnt1 += 1



                retval.stop = self.input.LT(-1)

                if self._state.backtracking == 0:

                    retval.tree = self._adaptor.rulePostProcessing(root_0)
                    self._adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop)


            except RecognitionException, re:
                self.reportError(re)
                self.recover(self.input, re)
                retval.tree = self._adaptor.errorNode(self.input, retval.start, self.input.LT(-1), re)
        finally:

            pass
        return retval

    # $ANTLR end "pr_file"

    class system_definition_return(ParserRuleReturnScope):
        def __init__(self):
            super(sdl92Parser.system_definition_return, self).__init__()

            self.tree = None




    # $ANTLR start "system_definition"
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    # sdl92.g:152:1: system_definition : SYSTEM system_name end ( entity_in_system )* ENDSYSTEM ( system_name )? end -> ^( SYSTEM system_name ( entity_in_system )* ) ;
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    def system_definition(self, ):

        retval = self.system_definition_return()
        retval.start = self.input.LT(1)

        root_0 = None

        SYSTEM4 = None
        ENDSYSTEM8 = None
        system_name5 = None

        end6 = None

        entity_in_system7 = None

        system_name9 = None

        end10 = None


        SYSTEM4_tree = None
        ENDSYSTEM8_tree = None
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        stream_ENDSYSTEM = RewriteRuleTokenStream(self._adaptor, "token ENDSYSTEM")
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        stream_SYSTEM = RewriteRuleTokenStream(self._adaptor, "token SYSTEM")
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        stream_entity_in_system = RewriteRuleSubtreeStream(self._adaptor, "rule entity_in_system")
        stream_system_name = RewriteRuleSubtreeStream(self._adaptor, "rule system_name")
        stream_end = RewriteRuleSubtreeStream(self._adaptor, "rule end")
        try:
            try:
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                # sdl92.g:153:9: ( SYSTEM system_name end ( entity_in_system )* ENDSYSTEM ( system_name )? end -> ^( SYSTEM system_name ( entity_in_system )* ) )
                # sdl92.g:153:17: SYSTEM system_name end ( entity_in_system )* ENDSYSTEM ( system_name )? end
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                pass 
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                SYSTEM4=self.match(self.input, SYSTEM, self.FOLLOW_SYSTEM_in_system_definition1438) 
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                if self._state.backtracking == 0:
                    stream_SYSTEM.add(SYSTEM4)
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                self._state.following.append(self.FOLLOW_system_name_in_system_definition1440)
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                system_name5 = self.system_name()

                self._state.following.pop()
                if self._state.backtracking == 0:
                    stream_system_name.add(system_name5.tree)
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                self._state.following.append(self.FOLLOW_end_in_system_definition1442)
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                end6 = self.end()

                self._state.following.pop()
                if self._state.backtracking == 0:
                    stream_end.add(end6.tree)
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                # sdl92.g:154:17: ( entity_in_system )*
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                while True: #loop2
                    alt2 = 2
                    LA2_0 = self.input.LA(1)

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                    if ((BLOCK <= LA2_0 <= CHANNEL) or LA2_0 == PROCEDURE or LA2_0 == SIGNAL or LA2_0 == 227) :
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                        alt2 = 1


                    if alt2 == 1:
                        # sdl92.g:0:0: entity_in_system
                        pass 
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                        self._state.following.append(self.FOLLOW_entity_in_system_in_system_definition1460)
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                        entity_in_system7 = self.entity_in_system()

                        self._state.following.pop()
                        if self._state.backtracking == 0:
                            stream_entity_in_system.add(entity_in_system7.tree)


                    else:
                        break #loop2
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                ENDSYSTEM8=self.match(self.input, ENDSYSTEM, self.FOLLOW_ENDSYSTEM_in_system_definition1479) 
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                if self._state.backtracking == 0:
                    stream_ENDSYSTEM.add(ENDSYSTEM8)
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                # sdl92.g:155:27: ( system_name )?
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                alt3 = 2
                LA3_0 = self.input.LA(1)

                if (LA3_0 == ID) :
                    alt3 = 1
                if alt3 == 1:
                    # sdl92.g:0:0: system_name
                    pass 
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                    self._state.following.append(self.FOLLOW_system_name_in_system_definition1481)
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                    system_name9 = self.system_name()

                    self._state.following.pop()
                    if self._state.backtracking == 0:
                        stream_system_name.add(system_name9.tree)



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                self._state.following.append(self.FOLLOW_end_in_system_definition1484)
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                end10 = self.end()

                self._state.following.pop()
                if self._state.backtracking == 0:
                    stream_end.add(end10.tree)

                # AST Rewrite
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                # elements: system_name, entity_in_system, SYSTEM
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                # token labels: 
                # rule labels: retval
                # token list labels: 
                # rule list labels: 
                # wildcard labels: 
                if self._state.backtracking == 0:

                    retval.tree = root_0

                    if retval is not None:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "rule retval", retval.tree)
                    else:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "token retval", None)


                    root_0 = self._adaptor.nil()
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                    # 156:9: -> ^( SYSTEM system_name ( entity_in_system )* )
                    # sdl92.g:156:17: ^( SYSTEM system_name ( entity_in_system )* )
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                    root_1 = self._adaptor.nil()
                    root_1 = self._adaptor.becomeRoot(stream_SYSTEM.nextNode(), root_1)

                    self._adaptor.addChild(root_1, stream_system_name.nextTree())
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                    # sdl92.g:156:38: ( entity_in_system )*
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                    while stream_entity_in_system.hasNext():
                        self._adaptor.addChild(root_1, stream_entity_in_system.nextTree())


                    stream_entity_in_system.reset();

                    self._adaptor.addChild(root_0, root_1)



                    retval.tree = root_0



                retval.stop = self.input.LT(-1)

                if self._state.backtracking == 0:

                    retval.tree = self._adaptor.rulePostProcessing(root_0)
                    self._adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop)


            except RecognitionException, re:
                self.reportError(re)
                self.recover(self.input, re)
                retval.tree = self._adaptor.errorNode(self.input, retval.start, self.input.LT(-1), re)
        finally:

            pass
        return retval

    # $ANTLR end "system_definition"

    class use_clause_return(ParserRuleReturnScope):
        def __init__(self):
            super(sdl92Parser.use_clause_return, self).__init__()

            self.tree = None




    # $ANTLR start "use_clause"
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    # sdl92.g:160:1: use_clause : ( use_asn1 )? USE package_name ( '/' def_selection_list )? end -> ^( USE ( use_asn1 )? ( end )? package_name ( def_selection_list )? ) ;
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    def use_clause(self, ):

        retval = self.use_clause_return()
        retval.start = self.input.LT(1)

        root_0 = None

        USE12 = None
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        char_literal14 = None
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        use_asn111 = None

        package_name13 = None

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        def_selection_list15 = None

        end16 = None
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        USE12_tree = None
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        char_literal14_tree = None
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        stream_USE = RewriteRuleTokenStream(self._adaptor, "token USE")
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        stream_DIV = RewriteRuleTokenStream(self._adaptor, "token DIV")
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        stream_use_asn1 = RewriteRuleSubtreeStream(self._adaptor, "rule use_asn1")
        stream_package_name = RewriteRuleSubtreeStream(self._adaptor, "rule package_name")
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        stream_def_selection_list = RewriteRuleSubtreeStream(self._adaptor, "rule def_selection_list")
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        stream_end = RewriteRuleSubtreeStream(self._adaptor, "rule end")
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        try:
            try:
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                # sdl92.g:161:9: ( ( use_asn1 )? USE package_name ( '/' def_selection_list )? end -> ^( USE ( use_asn1 )? ( end )? package_name ( def_selection_list )? ) )
                # sdl92.g:161:17: ( use_asn1 )? USE package_name ( '/' def_selection_list )? end
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                pass 
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                # sdl92.g:161:17: ( use_asn1 )?
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                alt4 = 2
                LA4_0 = self.input.LA(1)

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                if (LA4_0 == 227) :
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                    alt4 = 1
                if alt4 == 1:
                    # sdl92.g:0:0: use_asn1
                    pass 
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                    self._state.following.append(self.FOLLOW_use_asn1_in_use_clause1540)
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                    use_asn111 = self.use_asn1()

                    self._state.following.pop()
                    if self._state.backtracking == 0:
                        stream_use_asn1.add(use_asn111.tree)



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                USE12=self.match(self.input, USE, self.FOLLOW_USE_in_use_clause1559) 
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                if self._state.backtracking == 0:
                    stream_USE.add(USE12)
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                self._state.following.append(self.FOLLOW_package_name_in_use_clause1561)
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                package_name13 = self.package_name()

                self._state.following.pop()
                if self._state.backtracking == 0:
                    stream_package_name.add(package_name13.tree)
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                # sdl92.g:163:17: ( '/' def_selection_list )?
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                alt5 = 2
                LA5_0 = self.input.LA(1)

                if (LA5_0 == DIV) :
                    alt5 = 1
                if alt5 == 1:
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                    # sdl92.g:163:18: '/' def_selection_list
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                    pass 
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                    char_literal14=self.match(self.input, DIV, self.FOLLOW_DIV_in_use_clause1580) 
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                    if self._state.backtracking == 0:
                        stream_DIV.add(char_literal14)
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                    self._state.following.append(self.FOLLOW_def_selection_list_in_use_clause1582)
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                    def_selection_list15 = self.def_selection_list()

                    self._state.following.pop()
                    if self._state.backtracking == 0:
                        stream_def_selection_list.add(def_selection_list15.tree)



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                self._state.following.append(self.FOLLOW_end_in_use_clause1603)
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                end16 = self.end()
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                self._state.following.pop()
                if self._state.backtracking == 0:
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                    stream_end.add(end16.tree)
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                # AST Rewrite
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                # elements: end, package_name, USE, use_asn1, def_selection_list
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                # token labels: 
                # rule labels: retval
                # token list labels: 
                # rule list labels: 
                # wildcard labels: 
                if self._state.backtracking == 0:

                    retval.tree = root_0

                    if retval is not None:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "rule retval", retval.tree)
                    else:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "token retval", None)


                    root_0 = self._adaptor.nil()
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                    # 165:9: -> ^( USE ( use_asn1 )? ( end )? package_name ( def_selection_list )? )
                    # sdl92.g:165:17: ^( USE ( use_asn1 )? ( end )? package_name ( def_selection_list )? )
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                    root_1 = self._adaptor.nil()
                    root_1 = self._adaptor.becomeRoot(stream_USE.nextNode(), root_1)

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                    # sdl92.g:165:23: ( use_asn1 )?
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                    if stream_use_asn1.hasNext():
                        self._adaptor.addChild(root_1, stream_use_asn1.nextTree())


                    stream_use_asn1.reset();
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                    # sdl92.g:165:33: ( end )?
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                    if stream_end.hasNext():
                        self._adaptor.addChild(root_1, stream_end.nextTree())


                    stream_end.reset();
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                    self._adaptor.addChild(root_1, stream_package_name.nextTree())
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                    # sdl92.g:165:51: ( def_selection_list )?
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                    if stream_def_selection_list.hasNext():
                        self._adaptor.addChild(root_1, stream_def_selection_list.nextTree())


                    stream_def_selection_list.reset();
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                    self._adaptor.addChild(root_0, root_1)



                    retval.tree = root_0



                retval.stop = self.input.LT(-1)

                if self._state.backtracking == 0:

                    retval.tree = self._adaptor.rulePostProcessing(root_0)
                    self._adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop)


            except RecognitionException, re:
                self.reportError(re)
                self.recover(self.input, re)
                retval.tree = self._adaptor.errorNode(self.input, retval.start, self.input.LT(-1), re)
        finally:

            pass
        return retval

    # $ANTLR end "use_clause"

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    class def_selection_list_return(ParserRuleReturnScope):
        def __init__(self):
            super(sdl92Parser.def_selection_list_return, self).__init__()

            self.tree = None




    # $ANTLR start "def_selection_list"
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    # sdl92.g:172:1: def_selection_list : ID ( ',' ID )* ;
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    def def_selection_list(self, ):

        retval = self.def_selection_list_return()
        retval.start = self.input.LT(1)

        root_0 = None

        ID17 = None
        char_literal18 = None
        ID19 = None

        ID17_tree = None
        char_literal18_tree = None
        ID19_tree = None

        try:
            try:
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                # sdl92.g:173:9: ( ID ( ',' ID )* )
                # sdl92.g:173:17: ID ( ',' ID )*
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                pass 
                root_0 = self._adaptor.nil()

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                ID17=self.match(self.input, ID, self.FOLLOW_ID_in_def_selection_list1667)
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                if self._state.backtracking == 0:

                    ID17_tree = self._adaptor.createWithPayload(ID17)
                    self._adaptor.addChild(root_0, ID17_tree)

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                # sdl92.g:173:20: ( ',' ID )*
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                while True: #loop6
                    alt6 = 2
                    LA6_0 = self.input.LA(1)

                    if (LA6_0 == COMMA) :
                        alt6 = 1


                    if alt6 == 1:
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                        # sdl92.g:173:21: ',' ID
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                        pass 
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                        char_literal18=self.match(self.input, COMMA, self.FOLLOW_COMMA_in_def_selection_list1670)
                        ID19=self.match(self.input, ID, self.FOLLOW_ID_in_def_selection_list1673)
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                        if self._state.backtracking == 0:

                            ID19_tree = self._adaptor.createWithPayload(ID19)
                            self._adaptor.addChild(root_0, ID19_tree)



                    else:
                        break #loop6



                retval.stop = self.input.LT(-1)

                if self._state.backtracking == 0:

                    retval.tree = self._adaptor.rulePostProcessing(root_0)
                    self._adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop)


            except RecognitionException, re:
                self.reportError(re)
                self.recover(self.input, re)
                retval.tree = self._adaptor.errorNode(self.input, retval.start, self.input.LT(-1), re)
        finally:

            pass
        return retval

    # $ANTLR end "def_selection_list"

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    class entity_in_system_return(ParserRuleReturnScope):
        def __init__(self):
            super(sdl92Parser.entity_in_system_return, self).__init__()

            self.tree = None




    # $ANTLR start "entity_in_system"
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    # sdl92.g:180:1: entity_in_system : ( signal_declaration | text_area | procedure | channel | block_definition );
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    def entity_in_system(self, ):

        retval = self.entity_in_system_return()
        retval.start = self.input.LT(1)

        root_0 = None

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        signal_declaration20 = None
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        text_area21 = None
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        procedure22 = None
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        channel23 = None
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        block_definition24 = None
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        try:
            try:
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                # sdl92.g:181:9: ( signal_declaration | text_area | procedure | channel | block_definition )
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                alt7 = 5
                LA7 = self.input.LA(1)
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                if LA7 == 227:
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                    LA7_1 = self.input.LA(2)

                    if (self.synpred9_sdl92()) :
                        alt7 = 1
                    elif (self.synpred10_sdl92()) :
                        alt7 = 2
                    elif (self.synpred11_sdl92()) :
                        alt7 = 3
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                    else:
                        if self._state.backtracking > 0:
                            raise BacktrackingFailed

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                        nvae = NoViableAltException("", 7, 1, self.input)
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                        raise nvae

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                elif LA7 == SIGNAL:
                    alt7 = 1
                elif LA7 == PROCEDURE:
                    alt7 = 3
                elif LA7 == CHANNEL:
                    alt7 = 4
                elif LA7 == BLOCK:
                    alt7 = 5
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                else:
                    if self._state.backtracking > 0:
                        raise BacktrackingFailed

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                    nvae = NoViableAltException("", 7, 0, self.input)
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                    raise nvae

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                if alt7 == 1:
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                    # sdl92.g:181:17: signal_declaration
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                    pass 
                    root_0 = self._adaptor.nil()

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                    self._state.following.append(self.FOLLOW_signal_declaration_in_entity_in_system1709)
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                    signal_declaration20 = self.signal_declaration()
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                    self._state.following.pop()
                    if self._state.backtracking == 0:
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                        self._adaptor.addChild(root_0, signal_declaration20.tree)
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                elif alt7 == 2:
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                    # sdl92.g:182:19: text_area
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                    pass 
                    root_0 = self._adaptor.nil()

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                    self._state.following.append(self.FOLLOW_text_area_in_entity_in_system1729)
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                    text_area21 = self.text_area()
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                    self._state.following.pop()
                    if self._state.backtracking == 0:
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                        self._adaptor.addChild(root_0, text_area21.tree)
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                elif alt7 == 3:
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                    # sdl92.g:183:19: procedure
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                    pass 
                    root_0 = self._adaptor.nil()

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                    self._state.following.append(self.FOLLOW_procedure_in_entity_in_system1749)
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                    procedure22 = self.procedure()
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                    self._state.following.pop()
                    if self._state.backtracking == 0:
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                        self._adaptor.addChild(root_0, procedure22.tree)
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                elif alt7 == 4:
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                    # sdl92.g:184:19: channel
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                    pass 
                    root_0 = self._adaptor.nil()

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                    self._state.following.append(self.FOLLOW_channel_in_entity_in_system1769)
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                    channel23 = self.channel()
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                    self._state.following.pop()
                    if self._state.backtracking == 0:
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                        self._adaptor.addChild(root_0, channel23.tree)
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                elif alt7 == 5:
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                    # sdl92.g:185:19: block_definition
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                    pass 
                    root_0 = self._adaptor.nil()

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                    self._state.following.append(self.FOLLOW_block_definition_in_entity_in_system1789)
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                    block_definition24 = self.block_definition()
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                    self._state.following.pop()
                    if self._state.backtracking == 0:
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                        self._adaptor.addChild(root_0, block_definition24.tree)
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                retval.stop = self.input.LT(-1)

                if self._state.backtracking == 0:

                    retval.tree = self._adaptor.rulePostProcessing(root_0)
                    self._adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop)


            except RecognitionException, re:
                self.reportError(re)
                self.recover(self.input, re)
                retval.tree = self._adaptor.errorNode(self.input, retval.start, self.input.LT(-1), re)
        finally:

            pass
        return retval

    # $ANTLR end "entity_in_system"

    class signal_declaration_return(ParserRuleReturnScope):
        def __init__(self):
            super(sdl92Parser.signal_declaration_return, self).__init__()

            self.tree = None




    # $ANTLR start "signal_declaration"
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    # sdl92.g:191:1: signal_declaration : ( paramnames )? SIGNAL signal_id ( input_params )? end -> ^( SIGNAL ( paramnames )? signal_id ( input_params )? ) ;
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    def signal_declaration(self, ):

        retval = self.signal_declaration_return()
        retval.start = self.input.LT(1)

        root_0 = None

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        SIGNAL26 = None
        paramnames25 = None
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        signal_id27 = None
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        input_params28 = None
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        end29 = None
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        SIGNAL26_tree = None
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        stream_SIGNAL = RewriteRuleTokenStream(self._adaptor, "token SIGNAL")
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        stream_input_params = RewriteRuleSubtreeStream(self._adaptor, "rule input_params")
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        stream_paramnames = RewriteRuleSubtreeStream(self._adaptor, "rule paramnames")
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        stream_signal_id = RewriteRuleSubtreeStream(self._adaptor, "rule signal_id")
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        stream_end = RewriteRuleSubtreeStream(self._adaptor, "rule end")
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        try:
            try:
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                # sdl92.g:192:9: ( ( paramnames )? SIGNAL signal_id ( input_params )? end -> ^( SIGNAL ( paramnames )? signal_id ( input_params )? ) )
                # sdl92.g:192:17: ( paramnames )? SIGNAL signal_id ( input_params )? end
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                pass 
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                # sdl92.g:192:17: ( paramnames )?
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                alt8 = 2
                LA8_0 = self.input.LA(1)
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                if (LA8_0 == 227) :
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                    alt8 = 1
                if alt8 == 1:
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                    # sdl92.g:0:0: paramnames
                    pass 
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                    self._state.following.append(self.FOLLOW_paramnames_in_signal_declaration1822)
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                    paramnames25 = self.paramnames()
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                    self._state.following.pop()
                    if self._state.backtracking == 0:
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                        stream_paramnames.add(paramnames25.tree)
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                SIGNAL26=self.match(self.input, SIGNAL, self.FOLLOW_SIGNAL_in_signal_declaration1841) 
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                if self._state.backtracking == 0:
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                    stream_SIGNAL.add(SIGNAL26)
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                self._state.following.append(self.FOLLOW_signal_id_in_signal_declaration1843)
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                signal_id27 = self.signal_id()
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                self._state.following.pop()
                if self._state.backtracking == 0:
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                    stream_signal_id.add(signal_id27.tree)
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                # sdl92.g:193:34: ( input_params )?
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                alt9 = 2
                LA9_0 = self.input.LA(1)
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                if (LA9_0 == L_PAREN) :
                    alt9 = 1
                if alt9 == 1:
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                    # sdl92.g:0:0: input_params
                    pass 
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                    self._state.following.append(self.FOLLOW_input_params_in_signal_declaration1845)
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                    input_params28 = self.input_params()
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                    self._state.following.pop()
                    if self._state.backtracking == 0:
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                        stream_input_params.add(input_params28.tree)
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                self._state.following.append(self.FOLLOW_end_in_signal_declaration1848)
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                end29 = self.end()
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                self._state.following.pop()
                if self._state.backtracking == 0:
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                    stream_end.add(end29.tree)
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                # AST Rewrite
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                # elements: signal_id, input_params, paramnames, SIGNAL
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                # token labels: 
                # rule labels: retval
                # token list labels: 
                # rule list labels: 
                # wildcard labels: 
                if self._state.backtracking == 0:

                    retval.tree = root_0

                    if retval is not None:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "rule retval", retval.tree)
                    else:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "token retval", None)


                    root_0 = self._adaptor.nil()
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                    # 194:9: -> ^( SIGNAL ( paramnames )? signal_id ( input_params )? )
                    # sdl92.g:194:17: ^( SIGNAL ( paramnames )? signal_id ( input_params )? )
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                    root_1 = self._adaptor.nil()
                    root_1 = self._adaptor.becomeRoot(stream_SIGNAL.nextNode(), root_1)

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                    # sdl92.g:194:26: ( paramnames )?
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                    if stream_paramnames.hasNext():
                        self._adaptor.addChild(root_1, stream_paramnames.nextTree())


                    stream_paramnames.reset();
                    self._adaptor.addChild(root_1, stream_signal_id.nextTree())
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                    # sdl92.g:194:48: ( input_params )?
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                    if stream_input_params.hasNext():
                        self._adaptor.addChild(root_1, stream_input_params.nextTree())


                    stream_input_params.reset();

                    self._adaptor.addChild(root_0, root_1)



                    retval.tree = root_0



                retval.stop = self.input.LT(-1)

                if self._state.backtracking == 0:

                    retval.tree = self._adaptor.rulePostProcessing(root_0)
                    self._adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop)


            except RecognitionException, re:
                self.reportError(re)
                self.recover(self.input, re)
                retval.tree = self._adaptor.errorNode(self.input, retval.start, self.input.LT(-1), re)
        finally:

            pass
        return retval

    # $ANTLR end "signal_declaration"

    class channel_return(ParserRuleReturnScope):
        def __init__(self):
            super(sdl92Parser.channel_return, self).__init__()

            self.tree = None




    # $ANTLR start "channel"
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    # sdl92.g:198:1: channel : CHANNEL channel_id ( route )+ ENDCHANNEL end -> ^( CHANNEL channel_id ( route )+ ) ;
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    def channel(self, ):

        retval = self.channel_return()
        retval.start = self.input.LT(1)

        root_0 = None

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        CHANNEL30 = None
        ENDCHANNEL33 = None
        channel_id31 = None
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        route32 = None
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        end34 = None
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        CHANNEL30_tree = None
        ENDCHANNEL33_tree = None
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        stream_CHANNEL = RewriteRuleTokenStream(self._adaptor, "token CHANNEL")
        stream_ENDCHANNEL = RewriteRuleTokenStream(self._adaptor, "token ENDCHANNEL")
        stream_route = RewriteRuleSubtreeStream(self._adaptor, "rule route")
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        stream_channel_id = RewriteRuleSubtreeStream(self._adaptor, "rule channel_id")
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        stream_end = RewriteRuleSubtreeStream(self._adaptor, "rule end")
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        try:
            try:
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                # sdl92.g:199:9: ( CHANNEL channel_id ( route )+ ENDCHANNEL end -> ^( CHANNEL channel_id ( route )+ ) )
                # sdl92.g:199:17: CHANNEL channel_id ( route )+ ENDCHANNEL end
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                pass 
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                CHANNEL30=self.match(self.input, CHANNEL, self.FOLLOW_CHANNEL_in_channel1907) 
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                if self._state.backtracking == 0:
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                    stream_CHANNEL.add(CHANNEL30)
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                self._state.following.append(self.FOLLOW_channel_id_in_channel1909)
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                channel_id31 = self.channel_id()
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                self._state.following.pop()
                if self._state.backtracking == 0:
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                    stream_channel_id.add(channel_id31.tree)
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                # sdl92.g:200:17: ( route )+
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                cnt10 = 0
                while True: #loop10
                    alt10 = 2
                    LA10_0 = self.input.LA(1)
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                    if (LA10_0 == FROM) :
                        alt10 = 1
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                    if alt10 == 1:
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                        # sdl92.g:0:0: route
                        pass 
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                        self._state.following.append(self.FOLLOW_route_in_channel1927)
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                        route32 = self.route()
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                        self._state.following.pop()
                        if self._state.backtracking == 0:
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                            stream_route.add(route32.tree)
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                    else:
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                        if cnt10 >= 1:
                            break #loop10
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                        if self._state.backtracking > 0:
                            raise BacktrackingFailed

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                        eee = EarlyExitException(10, self.input)
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                        raise eee

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                    cnt10 += 1
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                ENDCHANNEL33=self.match(self.input, ENDCHANNEL, self.FOLLOW_ENDCHANNEL_in_channel1946) 
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                if self._state.backtracking == 0:
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                    stream_ENDCHANNEL.add(ENDCHANNEL33)
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                self._state.following.append(self.FOLLOW_end_in_channel1948)
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                end34 = self.end()
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                self._state.following.pop()
                if self._state.backtracking == 0:
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                    stream_end.add(end34.tree)
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                # AST Rewrite
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                # elements: route, channel_id, CHANNEL
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                # token labels: 
                # rule labels: retval
                # token list labels: 
                # rule list labels: 
                # wildcard labels: 
                if self._state.backtracking == 0:

                    retval.tree = root_0

                    if retval is not None:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "rule retval", retval.tree)
                    else:
                        stream_retval = RewriteRuleSubtreeStream(self._adaptor, "token retval", None)


                    root_0 = self._adaptor.nil()
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                    # 202:9: -> ^( CHANNEL channel_id ( route )+ )
                    # sdl92.g:202:17: ^( CHANNEL channel_id ( route )+ )
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                    root_1 = self._adaptor.nil()
                    root_1 = self._adaptor.becomeRoot(stream_CHANNEL.nextNode(), root_1)

                    self._adaptor.addChild(root_1, stream_channel_id.nextTree())
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                    # sdl92.g:202:38: ( route )+
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                    if not (stream_route.hasNext()):
                        raise RewriteEarlyExitException()

                    while stream_route.hasNext():
                        self._adaptor.addChild(root_1, stream_route.nextTree())


                    stream_route.reset()

                    self._adaptor.addChild(root_0, root_1)



                    retval.tree = root_0



                retval.stop = self.input.LT(-1)

                if self._state.backtracking == 0:

                    retval.tree = self._adaptor.rulePostProcessing(root_0)
                    self._adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop)


            except RecognitionException, re:
                self.reportError(re)
                self.recover(self.input, re)
                retval.tree = self._adaptor.errorNode(self.input, retval.start, self.input.LT(-1), re)
        finally:

            pass
        return retval

    # $ANTLR end "channel"

    class route_return(ParserRuleRet