| 1 | lexer grammar MFortranLexer;
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| 2 |
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| 3 | options {
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| 4 | tokenVocab=MFortranLexer;
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| 5 | }
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| 6 |
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| 7 | @header {
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| 8 | /**
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| 9 | * Copyright (c) 2005, 2006 Los Alamos National Security, LLC. This
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| 10 | * material was produced under U.S. Government contract DE-
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| 11 | * AC52-06NA25396 for Los Alamos National Laboratory (LANL), which is
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| 12 | * operated by the Los Alamos National Security, LLC (LANS) for the
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| 13 | * U.S. Department of Energy. The U.S. Government has rights to use,
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| 14 | * reproduce, and distribute this software. NEITHER THE GOVERNMENT NOR
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| 15 | * LANS MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY
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| 16 | * LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified to
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| 17 | * produce derivative works, such modified software should be clearly
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| 18 | * marked, so as not to confuse it with the version available from
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| 19 | * LANL.
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| 20 | *
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| 21 | * Additionally, this program and the accompanying materials are made
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| 22 | * available under the terms of the Eclipse Public License v1.0 which
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| 23 | * accompanies this distribution, and is available at
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| 24 | * http://www.eclipse.org/legal/epl-v10.html
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| 25 | */
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| 26 |
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| 27 | /**
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| 28 | *
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| 29 | * @author Craig E Rasmussen, Christopher D. Rickett, Jeffrey Overbey
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| 30 | */
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| 31 |
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| 32 |
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| 33 | package dev.civl.abc.front.fortran.preproc;
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| 34 |
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| 35 | }
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| 36 |
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| 37 | /*
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| 38 | * Lexer rules
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| 39 | */
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| 40 |
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| 41 | /*
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| 42 | * Note: antlr sometimes has LL(*) failures with the grammars, but not always.
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| 43 | * it seems that it may be the timeout issue that was mentioned..
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| 44 | */
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| 45 |
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| 46 | // Support for language extension points
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| 47 | NO_LANG_EXT
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| 48 | : {false}? 'no extension' ; // can't be recognized
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| 49 |
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| 50 | EOS : ';'
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| 51 | | ('\r')? ('\n') ;
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| 52 |
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| 53 | /* if this is a fragment, the generated code never seems to execute the
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| 54 | * action. the action needs to set the flag so EOS knows whether it should
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| 55 | * be channel 99'ed or not (ignore EOS if continuation is true, which is the
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| 56 | * case of the & at the end of a line).
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| 57 | */
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| 58 | CONTINUE_CHAR
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| 59 | : '&' ;
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| 60 |
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| 61 | // R427 from char-literal-constant
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| 62 | CHAR_CONST
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| 63 | : ('\'' ( ~('\'') )* '\'')+
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| 64 | | ('\"' ( ~('\"') )* '\"')+ ;
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| 65 |
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| 66 | DIGIT_STR
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| 67 | : Digit+ ;
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| 68 |
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| 69 | // R412
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| 70 | BIN_CONST
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| 71 | : ('b'|'B') '\'' ('0'..'1')+ '\''
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| 72 | | ('b'|'B') '\"' ('0'..'1')+ '\"' ;
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| 73 |
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| 74 | // R413
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| 75 | OCT_CONST
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| 76 | : ('o'|'O') '\'' ('0'..'7')+ '\''
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| 77 | | ('o'|'O') '\"' ('0'..'7')+ '\"' ;
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| 78 |
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| 79 | // R414
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| 80 | HEX_CONST
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| 81 | : ('z'|'Z') '\'' (Digit|'a'..'f'|'A'..'F')+ '\''
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| 82 | | ('z'|'Z') '\"' (Digit|'a'..'f'|'A'..'F')+ '\"' ;
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| 83 |
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| 84 | WS : (' '|'\r'|'\t'|'\u000C') ;
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| 85 |
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| 86 | /*
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| 87 | * fragments
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| 88 | */
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| 89 |
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| 90 | // R409 digit_string
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| 91 | //fragment
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| 92 | //Digits : Digit+ ;
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| 93 | //
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| 94 | // R302 alphanumeric_character
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| 95 | //fragment
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| 96 | //Gen_Char : Letter | Digit | '_' ;
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| 97 | //
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| 98 | //fragment
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| 99 | //Rep_Char : ~('\'' | '\"') ;
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| 100 | //
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| 101 | //fragment
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| 102 | //SQ_Rep_Char : ~('\'') ;
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| 103 | //
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| 104 | //fragment
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| 105 | //DQ_Rep_Char : ~('\"') ;
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| 106 |
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| 107 | fragment
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| 108 | Sp_Char : ' ' .. '/'
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| 109 | | ':' .. '@'
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| 110 | | '[' .. '^'
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| 111 | | '`'
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| 112 | | '{' .. '~' ;
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| 113 |
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| 114 |
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| 115 | fragment
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| 116 | Letter : ('a'..'z' | 'A'..'Z') ;
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| 117 |
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| 118 | fragment
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| 119 | Digit : '0'..'9' ;
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| 120 |
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| 121 |
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| 122 | /*
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| 123 | * from fortran03_lexer.g
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| 124 | */
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| 125 |
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| 126 | ASTERISK : '*' ;
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| 127 | COLON : ':' ;
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| 128 | COLON_COLON : '::' ;
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| 129 | COMMA : ',' ;
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| 130 | EQUALS : '=' ;
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| 131 | EQ_EQ : '==' ;
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| 132 | EQ_GT : '=>' ;
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| 133 | GREATERTHAN : '>' ;
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| 134 | GREATERTHAN_EQ : '>=' ;
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| 135 | LESSTHAN : '<' ;
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| 136 | LESSTHAN_EQ : '<=' ;
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| 137 | LBRACKET : '[' ;
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| 138 | LPAREN : '(' ;
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| 139 | MINUS : '-' ;
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| 140 | PERCENT : '%' ;
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| 141 | PLUS : '+' ;
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| 142 | POWER : '**' ;
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| 143 | SLASH : '/' ;
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| 144 | SLASH_EQ : '/=' ;
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| 145 | SLASH_SLASH : '//' ;
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| 146 | RBRACKET : ']' ;
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| 147 | RPAREN : ')' ;
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| 148 | UNDERSCORE : '_' ;
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| 149 | EQ : '.EQ.' ;
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| 150 | NE : '.NE.' ;
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| 151 | LT : '.LT.' ;
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| 152 | LE : '.LE.' ;
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| 153 | GT : '.GT.' ;
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| 154 | GE : '.GE.' ;
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| 155 | TRUE : '.TRUE.' ;
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| 156 | FALSE : '.FALSE.' ;
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| 157 | NOT : '.NOT.' ;
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| 158 | AND : '.AND.' ;
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| 159 | OR : '.OR.' ;
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| 160 | EQV : '.EQV.' ;
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| 161 | NEQV : '.NEQV.' ;
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| 162 | PERIOD : '.' ;
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| 163 | PERIOD_EXPONENT : '.' ('0'..'9')+
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| 164 | ('E' | 'e' | 'd' | 'D')
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| 165 | ('+' | '-')? ('0'..'9')+
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| 166 | | '.' ('E' | 'e' | 'd' | 'D')
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| 167 | ('+' | '-')? ('0'..'9')+
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| 168 | | '.' ('0'..'9')+
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| 169 | | ('0'..'9')+
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| 170 | ('e' | 'E' | 'd' | 'D')
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| 171 | ('+' | '-')? ('0'..'9')+ ;
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| 172 |
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| 173 | // begin keyword section (all keywords must appear below
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| 174 | //ASSIGN : 'ASSIGN' ; /* DELETED */
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| 175 |
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| 176 | INTEGER : 'INTEGER' ;
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| 177 | REAL : 'REAL' ;
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| 178 | COMPLEX : 'COMPLEX' ;
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| 179 | CHARACTER : 'CHARACTER' ;
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| 180 | LOGICAL : 'LOGICAL' ;
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| 181 | ABSTRACT : 'ABSTRACT' ;
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| 182 | ACQUIRED_LOCK : 'ACQUIRED_LOCK' ; /* F2008 */
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| 183 | ALL : 'ALL' ; /* F2008 */
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| 184 | ALLOCATABLE : 'ALLOCATABLE' ;
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| 185 | ALLOCATE : 'ALLOCATE' ;
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| 186 | ASSIGNMENT : 'ASSIGNMENT' ;
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| 187 | ASSOCIATE : 'ASSOCIATE' ;
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| 188 | ASYNCHRONOUS : 'ASYNCHRONOUS' ;
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| 189 | BACKSPACE : 'BACKSPACE' ;
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| 190 | BIND : 'BIND' ;
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| 191 | BLOCK : 'BLOCK' ;
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| 192 | BLOCKDATA : 'BLOCKDATA' ;
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| 193 | CALL : 'CALL' ;
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| 194 | CASE : 'CASE' ;
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| 195 | CHANGE : 'CHANGE' ;
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| 196 | CLASS : 'CLASS' ;
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| 197 | CLOSE : 'CLOSE' ;
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| 198 | CODIMENSION : 'CODIMENSION' ;
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| 199 | COMMON : 'COMMON' ;
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| 200 | CONCURRENT : 'CONCURRENT' ;
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| 201 | CONTAINS : 'CONTAINS' ;
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| 202 | CONTIGUOUS : 'CONTIGUOUS' ;
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| 203 | CONTINUE : 'CONTINUE' ;
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| 204 | CRITICAL : 'CRITICAL' ;
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| 205 | CYCLE : 'CYCLE' ;
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| 206 | DATA : 'DATA' ;
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| 207 | DEFAULT : 'DEFAULT' ;
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| 208 | DEALLOCATE : 'DEALLOCATE' ;
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| 209 | DEFERRED : 'DEFERRED' ;
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| 210 | DIMENSION : 'DIMENSION' ;
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| 211 | DO : 'DO' ;
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| 212 | DOUBLE : 'DOUBLE' ;
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| 213 | DOUBLEPRECISION : 'DOUBLEPRECISION' ;
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| 214 | DOUBLECOMPLEX : 'DOUBLECOMPLEX' ;
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| 215 | ELEMENTAL : 'ELEMENTAL' ;
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| 216 | ELSE : 'ELSE' ;
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| 217 | ELSEIF : 'ELSEIF' ;
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| 218 | ELSEWHERE : 'ELSEWHERE' ;
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| 219 | ENTRY : 'ENTRY' ;
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| 220 | ENUM : 'ENUM' ;
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| 221 | ENUMERATOR : 'ENUMERATOR' ;
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| 222 | ERRMSG : 'ERRMSG' ;
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| 223 | ERROR : 'ERROR' ;
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| 224 | EQUIVALENCE : 'EQUIVALENCE' ;
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| 225 | EVENT : 'EVENT' ; /* F2018 */
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| 226 | EVENTWAIT : 'EVENTWAIT' ; /* F2018 */
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| 227 | EXIT : 'EXIT' ;
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| 228 | EXTENDS : 'EXTENDS' ;
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| 229 | EXTERNAL : 'EXTERNAL' ;
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| 230 | FAIL : 'FAIL' ;
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| 231 | FAILIMAGE : 'FAILIMAGE' ;
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| 232 | FILE : 'FILE' ;
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| 233 | FINAL : 'FINAL' ;
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| 234 | FLUSH : 'FLUSH' ;
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| 235 | FORALL : 'FORALL' ;
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| 236 | FORM : 'FORM' ;
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| 237 | FORMAT : 'FORMAT' ;
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| 238 | FORMATTED : 'FORMATTED' ;
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| 239 | FORMTEAM : 'FORMTEAM' ;
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| 240 | FUNCTION : 'FUNCTION' ;
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| 241 | GENERIC : 'GENERIC' ;
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| 242 | GO : 'GO' ;
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| 243 | GOTO : 'GOTO' ;
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| 244 | IF : 'IF' ;
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| 245 | IMAGE : 'IMAGE' ;
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| 246 | IMAGES : 'IMAGES' ;
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| 247 | IMPLICIT : 'IMPLICIT' ;
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| 248 | IMPORT : 'IMPORT' ;
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| 249 | IMPURE : 'IMPURE' ;
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| 250 | IN : 'IN' ;
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| 251 | INOUT : 'INOUT' ;
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| 252 | INTENT : 'INTENT' ;
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| 253 | INTERFACE : 'INTERFACE' ;
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| 254 | INTRINSIC : 'INTRINSIC' ;
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| 255 | INQUIRE : 'INQUIRE' ;
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| 256 | IS : 'IS' ;
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| 257 | KIND : 'KIND' ;
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| 258 | LEN : 'LEN' ;
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| 259 | LOCAL : 'LOCAL' ;
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| 260 | LOCAL_INT : 'LOCAL_INT' ;
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| 261 | LOCK : 'LOCK' ; /* F2008 */
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| 262 | MEMORY : 'MEMORY' ;
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| 263 | MODULE : 'MODULE' ;
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| 264 | MOLD : 'MOLD' ;
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| 265 | NAMELIST : 'NAMELIST' ;
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| 266 | NONE : 'NONE' ;
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| 267 | NON_INTRINSIC : 'NON_INTRINSIC' ;
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| 268 | NON_OVERRIDABLE : 'NON_OVERRIDABLE' ;
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| 269 | NON_RECURSIVE : 'NON_RECURSIVE' ;
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| 270 | NOPASS : 'NOPASS' ;
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| 271 | NULLIFY : 'NULLIFY' ;
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| 272 | ONLY : 'ONLY' ;
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| 273 | OPEN : 'OPEN' ;
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| 274 | OPERATOR : 'OPERATOR' ;
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| 275 | OPTIONAL : 'OPTIONAL' ;
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| 276 | OUT : 'OUT' ;
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| 277 | PARAMETER : 'PARAMETER' ;
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| 278 | PASS : 'PASS' ;
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| 279 | PAUSE : 'PAUSE' ;
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| 280 | POINTER : 'POINTER' ;
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| 281 | POST : 'POST' ;
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| 282 | PRINT : 'PRINT' ;
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| 283 | PRECISION : 'PRECISION' ;
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| 284 | PRIVATE : 'PRIVATE' ;
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| 285 | PROCEDURE : 'PROCEDURE' ;
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| 286 | PROGRAM : 'PROGRAM' ;
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| 287 | PROTECTED : 'PROTECTED' ;
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| 288 | PUBLIC : 'PUBLIC' ;
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| 289 | PURE : 'PURE' ;
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| 290 | QUIET : 'QUIET' ;
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| 291 | RANK : 'RANK' ;
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| 292 | READ : 'READ' ;
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| 293 | RECURSIVE : 'RECURSIVE' ;
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| 294 | RESULT : 'RESULT' ;
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| 295 | RETURN : 'RETURN' ;
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| 296 | REWIND : 'REWIND' ;
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| 297 | SAVE : 'SAVE' ;
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| 298 | SELECT : 'SELECT' ;
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| 299 | SELECTCASE : 'SELECTCASE' ;
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| 300 | SELECTTYPE : 'SELECTTYPE' ;
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| 301 | SEQUENCE : 'SEQUENCE' ;
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| 302 | SHARED : 'SHARED' ;
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| 303 | STAT : 'STAT' ;
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| 304 | STOP : 'STOP' ;
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| 305 | SOURCE : 'SOURCE' ;
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| 306 | SUBMODULE : 'SUBMODULE' ;
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| 307 | SUBROUTINE : 'SUBROUTINE' ;
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| 308 | SYNC : 'SYNC' ; /* F2008 */
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| 309 | SYNCTEAM : 'SYNCTEAM' ;
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| 310 | TARGET : 'TARGET' ;
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| 311 | TEAM : 'TEAM' ; /* F2018 */
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| 312 | THEN : 'THEN' ;
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| 313 | TO : 'TO' ;
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| 314 | TYPE : 'TYPE' ;
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| 315 | UNFORMATTED : 'UNFORMATTED' ;
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| 316 | UNLOCK : 'UNLOCK' ; /* F2008 */
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| 317 | USE : 'USE' ;
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| 318 | VALUE : 'VALUE' ;
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| 319 | VOLATILE : 'VOLATILE' ;
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| 320 | WAIT : 'WAIT' ;
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| 321 | WHERE : 'WHERE' ;
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| 322 | WHILE : 'WHILE' ;
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| 323 | WRITE : 'WRITE' ;
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| 324 |
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| 325 | // these tokens (without blank characters) are from 3.3.2.2
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| 326 | // All keywords commented out are separated as two tokens by converter
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| 327 | //ENDASSOCIATE : 'ENDASSOCIATE' ;
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| 328 | //ENDBLOCK : 'ENDCOTARGETBLOCK' ;
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| 329 | //ENDBLOCKDATA : 'ENDBLOCKDATA' ;
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| 330 | //ENDCRITICAL : 'ENDCRITICAL' ;
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| 331 | //ENDDO : 'ENDDO' ;
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| 332 | //ENDENUM : 'ENDENUM' ;
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| 333 | //ENDFILE : 'ENDFILE' ;
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| 334 | //ENDFORALL : 'ENDFORALL' ;
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| 335 | //ENDFUNCTION : 'ENDFUNCTION' ;
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| 336 | //ENDIF : 'ENDIF' ;
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| 337 | //ENDMODULE : 'ENDMODULE' ;
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| 338 | //ENDINTERFACE : 'ENDINTERFACE' ;
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| 339 | //ENDPROCEDURE : 'ENDPROCEDURE' ;
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| 340 | //ENDPROGRAM : 'ENDPROGRAM' ;
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| 341 | //ENDSELECT : 'ENDSELECT' ;
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| 342 | //ENDSUBMODULE : 'ENDSUBMODULE' ;
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| 343 | //ENDSUBROUTINE : 'ENDSUBROUTINE' ;
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| 344 | //ENDTEAM : 'ENDTEAM' ;
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| 345 | //ENDTYPE : 'ENDTYPE' ;
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| 346 | //ENDWHERE : 'ENDWHERE' ;
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| 347 | END : 'END' ;
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| 348 |
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| 349 | // End keyword section (all keywords must appear above
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| 350 |
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| 351 | PREPROCESS_LINE : '#' ~('\n'|'\r')* ;
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| 352 | INCLUDE
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| 353 | options {k=1;} : 'INCLUDE' ;
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| 354 |
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| 355 |
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| 356 | // Must come after .EQ. (for example) or will get matched first
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| 357 | // TODO:: this may have to be done in the parser w/ a rule such as:
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| 358 | // PERIOD IDENT PERIOD
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| 359 | DEFINED_OP : '.' Letter+ '.' ;
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| 360 |
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| 361 |
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| 362 | // Note: Hollerith constants were deleted in F77; Hollerith edit descriptors
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| 363 | // deleted in F95.
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| 364 | //
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| 365 | // T_HOLLERITH : Digit+ 'H' ;
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| 366 | //
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| 367 | // used to catch edit descriptors and other situations
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| 368 | // T_ID_OR_OTHER : 'ID_OR_OTHER' ;
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| 369 | //
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| 370 | //M_ARITHMETIC_IF_STMT : '__ARITHMETIC_IF_STMT__' ;
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| 371 |
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| 372 | STMT_FUNCTION : 'STMT_FUNCTION' ;
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| 373 |
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| 374 | // extra, context-sensitive terminals that require communication between parser and scanner
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| 375 | // added the underscores so there is no way this could overlap w/ any valid
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| 376 | // idents in Fortran. we just need this token to be defined so we can
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| 377 | // create one of them while we're fixing up labeled do stmts.
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| 378 | M_LBL_DO_TERMINAL : '__LABEL_DO_TERMINAL__' ;
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| 379 | M_DATA_EDIT_DESC : '__DATA_EDIT_DESC__' ;
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| 380 | M_CTRL_EDIT_DESC : '__CTRL_EDIT_DESC__' ;
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| 381 | M_CSTR_EDIT_DESC : '__CSTR_EDIT_DESC__' ;
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| 382 | M_ASSIGNMENT_STMT : '__ASSIGNMENT_STMT__' ;
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| 383 | M_PTR_ASSIGNMENT_STMT : '__PTR_ASSIGNMENT_STMT__' ;
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| 384 | M_ALLOCATE_STMT_1 : '__ALLOCATE_STMT_1__' ;
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| 385 | M_WHERE_STMT : '__WHERE_STMT__' ;
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| 386 | M_IF_STMT : '__IF_STMT__' ;
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| 387 | M_FORALL_STMT : '__FORALL_STMT__' ;
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| 388 | M_WHERE_CONSTRUCT_STMT : '__WHERE_CONSTRUCT_STMT__' ;
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| 389 | M_FORALL_CONSTRUCT_STMT : '__FORALL_CONSTRUCT_STMT__' ;
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| 390 | M_INQUIRE_STMT_2 : '__INQUIRE_STMT_2__' ;
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| 391 | // text for the real constant will be set
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| 392 | // when a token of this type is created by the prepass.
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| 393 | M_REAL_CONST : '__REAL_CONST__' ;
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| 394 | M_INCLUDE_NAME : '__INCLUDE_NAME__' ;
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| 395 | M_EOF : '__EOF__' ;
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| 396 |
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| 397 |
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| 398 | // R304
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| 399 | IDENT
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| 400 | options {k=1;} : Letter ( Letter | Digit | '_' )* ;
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| 401 |
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| 402 |
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| 403 | // Used in format-item processing. This token is replaced by an edit
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| 404 | // descriptor in the prepass (by FortranLexicalPrepass). It doesn't really
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| 405 | // matter what this token contains because the format string is parsed
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| 406 | // as a string in the lexical prepass. The goal is to keep the lexer from
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| 407 | // bombing on strings like 2es15.6 and also not interfer with real literal
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| 408 | // constants and Holleriths.
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| 409 |
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| 410 | EDIT_DESC_MISC : Digit+
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| 411 | ( ('e'|'E') (('n'|'N') | ('s'|'S')) )
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| 412 | ( Letter | Digit | '_' )* ;
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| 413 |
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| 414 | LINE_COMMENT : '!' ~('\n'|'\r'|'$')* ;
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| 415 |
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| 416 | /* Need a catch-all rule because of fixed-form being allowed to use any
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| 417 | character in column 6 to designate a continuation. */
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| 418 | MISC_CHAR : ~('\n' | '\r') ;
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| 419 |
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| 420 | PRAGMA : '!$' ;
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| 421 |
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| 422 | CIVL_PRIMITIVE : '$' Letter+ ; |
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