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