forgetest1
/
antlr
forked from jasder/antlr
1
0
Fork 0
Code Issues Pull Requests 1 Releases Wiki Activity

play with tests 

[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9879]
This commit is contained in:
parrt 2012-01-21 15:15:01 -08:00
parent 6013c4c97d
commit 9ae5049d44
2 changed files with 14 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
tool/playground/E.g
View File

@ -1,29 +1,8 @@
grammar E;
prog: classDef+ ; // match one or more class definitions
classDef
: 'class' ID '{' member+ '}' // a class has one or more members
{System.out.println("class "+$ID.text);}
lexer grammar E;
DUH : 'eee' {int y=1;}
| 'fff' {int z=3;}
;
member
: 'int' ID ';' // field definition
{System.out.println("var "+$ID.text);}
| 'int' f=ID '(' ID ')' '{' stat '}' // method definition
{System.out.println("method: "+$f.text);}
;
stat: expr ';'
{System.out.println("found expr: "+$stat.text);}
| ID '=' expr ';'
{System.out.println("found assign: "+$stat.text);}
;
expr: INT
| ID '(' INT ')'
;
ID : ('a'..'z'|'A'..'Z')+ ;
INT : '0'..'9'+ ;
WS : (' '|'\t'|'\n'|'\r')+ {$channel=HIDDEN;} ;
I : '0'..'9'+ {System.out.println("I");}
| 'z' {int x = 2;}
;
WS : (' '|'\n') -> type(WS) ;

52
tool/playground/TestE.java
View File

@ -1,49 +1,11 @@
/*
[The "BSD license"]
Copyright (c) 2011 Terence Parr
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.
*/
import org.antlr.v4.runtime.*;
public class TestE {
public static void main(String[] args) throws Exception {
// START:rig
CharStream input = new ANTLRFileStream(args[0]);
ELexer lexer = new ELexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
EParser parser = new EParser(tokens);
parser.setBuildParseTree(true);
ParserRuleContext ctx = parser.prog();
System.out.println(ctx.toStringTree(parser));
// Either view in dialog box:
//ctx.inspect(parser);
// Or in postscript
ctx.save(parser, "/tmp/t.ps");
// System.out.println(Trees.getPS(ctx, parser, "Helvetica", 10));
// END:rig
}
public static void main(String[] args) throws Exception {
CharStream input = new ANTLRFileStream(args[0]);
E lex = new E(input);
CommonTokenStream tokens = new CommonTokenStream(lex);
tokens.fill();
for (Object t : tokens.getTokens()) System.out.println(t);
}
}