play with tests

[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9879]

tool/playground/E.g

@@ -1,29 +1,8 @@
-grammar E;
+lexer grammar E;
-
+DUH : 'eee' {int y=1;}
-prog:   classDef+ ; // match one or more class definitions
+    | 'fff' {int z=3;}
-
-classDef
-    :   'class' ID '{' member+ '}' // a class has one or more members
-        {System.out.println("class "+$ID.text);}
     ;
-
+I : '0'..'9'+ {System.out.println("I");}
-member
+  | 'z'       {int x = 2;}
-    :   'int' ID ';'                       // field definition
+  ;
-        {System.out.println("var "+$ID.text);}
+WS : (' '|'\n') -> type(WS) ;
-    |   '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;} ;

tool/playground/TestE.java

@@ -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 {
+    public static void main(String[] args) throws Exception {
-// START:rig
+        CharStream input = new ANTLRFileStream(args[0]);
-		CharStream input = new ANTLRFileStream(args[0]);
+        E lex = new E(input);
-		ELexer lexer = new ELexer(input);
+        CommonTokenStream tokens = new CommonTokenStream(lex);
-		CommonTokenStream tokens = new CommonTokenStream(lexer);
+        tokens.fill();
-		EParser parser = new EParser(tokens);
+        for (Object t : tokens.getTokens()) System.out.println(t);
-		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
-	}
 }