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Diffstat (limited to 'runtime/CSharp3/Sources/Antlr3.Runtime.Test/JavaCompat/Expr.g3')
-rw-r--r-- | runtime/CSharp3/Sources/Antlr3.Runtime.Test/JavaCompat/Expr.g3 | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime.Test/JavaCompat/Expr.g3 b/runtime/CSharp3/Sources/Antlr3.Runtime.Test/JavaCompat/Expr.g3 deleted file mode 100644 index 78c79cc..0000000 --- a/runtime/CSharp3/Sources/Antlr3.Runtime.Test/JavaCompat/Expr.g3 +++ /dev/null @@ -1,113 +0,0 @@ -/* - * [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 Expr; - -/* - I had to make the following changes to the basic Expr grammar to make it work with the CSharp3 target in "Java compatibility mode". - For reference, see http://www.antlr.org/wiki/display/ANTLR3/Expression+evaluator. - - Add an options section to set the language to CSharp3. - - In the @header section, add: - // 'member' is obsolete - #pragma warning disable 612 - using Antlr.Runtime.JavaExtensions; - - In the @header section, replace: - import java.util.HashMap; - with: - using HashMap = System.Collections.Generic.Dictionary<object,object>; - - Change all instances of "System.out" with "JSystem.@out". - - Change all instances of "System.err" with "JSystem.err". - - Change all instances of "skip()" with "Skip()". - */ - -options -{ - language=CSharp3; -} - -@header { -// 'member' is obsolete -#pragma warning disable 612 - -using Antlr.Runtime.JavaExtensions; -using HashMap = System.Collections.Generic.Dictionary<object,object>; -using Integer = java.lang.Integer; -} - -@members { -/** Map variable name to Integer object holding value */ -HashMap memory = new HashMap(); -} - -@lexer::namespace{Antlr3.Runtime.Test.JavaCompat} -@parser::namespace{Antlr3.Runtime.Test.JavaCompat} - -prog: stat+ ; - -stat: expr NEWLINE {JSystem.@out.println($expr.value);} - | ID '=' expr NEWLINE - {memory.put($ID.text, new Integer($expr.value));} - | NEWLINE - ; - -expr returns [int value] - : e=multExpr {$value = $e.value;} - ( '+' e=multExpr {$value += $e.value;} - | '-' e=multExpr {$value -= $e.value;} - )* - ; - -multExpr returns [int value] - : e=atom {$value = $e.value;} ('*' e=atom {$value *= $e.value;})* - ; - -atom returns [int value] - : INT {$value = Integer.parseInt($INT.text);} - | ID - { - Integer v = (Integer)memory.get($ID.text); - if ( v!=null ) $value = v.intValue(); - else JSystem.err.println("undefined variable "+$ID.text); - } - | '(' expr ')' {$value = $expr.value;} - ; - -ID : ('a'..'z'|'A'..'Z')+ ; -INT : '0'..'9'+ ; -NEWLINE:'\r'? '\n' ; -WS : (' '|'\t')+ {Skip();} ; |