104 lines
2.6 KiB
Plaintext
104 lines
2.6 KiB
Plaintext
/*
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* [The "BSD license"]
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* Copyright (c) 2011 Terence Parr
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* All rights reserved.
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*
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* Conversion to C#:
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* Copyright (c) 2011 Sam Harwell, Pixel Mine, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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grammar ProfileGrammar;
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options
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{
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language=CSharp3;
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output=AST;
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ASTLabelType=CommonTree;
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}
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tokens
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{
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// define pseudo-operations
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FUNC;
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CALL;
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}
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@lexer::namespace{Antlr3.Runtime.Test.BuildOptions}
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@parser::namespace{Antlr3.Runtime.Test.BuildOptions}
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// START:stat
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prog: ( stat )*
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;
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stat: expr NEWLINE -> expr
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| ID '=' expr NEWLINE -> ^('=' ID expr)
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| func NEWLINE -> func
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| NEWLINE -> // ignore
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;
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func: ID '(' formalPar ')' '=' expr -> ^(FUNC ID formalPar expr)
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;
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finally {
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functionDefinitions.Add($func.tree);
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}
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formalPar
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: ID
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| INT
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;
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// END:stat
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// START:expr
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expr: multExpr (('+'^|'-'^) multExpr)*
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;
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multExpr
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: atom (('*'|'/'|'%')^ atom)*
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;
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atom: INT
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| ID
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| '(' expr ')' -> expr
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| ID '(' expr ')' -> ^(CALL ID expr)
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;
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// END:expr
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// START:tokens
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ID : ('a'..'z'|'A'..'Z')+
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;
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INT : '0'..'9'+
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;
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NEWLINE
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: '\r'? '\n'
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;
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WS : (' '|'\t')+ { Skip(); }
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;
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// END:tokens
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