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/* This is test.g which tests a simple DLG-based scanner
* with user-defined tokens
*/
/* Here, we use #tokdefs to define token types, but still let DLG do the
* lexing. ANTLR will not create a tokens.h file.
*/
#tokdefs "mytokens.h"
<<
#include "DLGLexer.h" /* include definition of DLGLexer.
* This cannot be generated automatically because
* ANTLR has no idea what you will call this file
* with the DLG command-line options.
*/
typedef ANTLRCommonToken ANTLRToken;
int main()
{
ANTLRTokenPtr aToken = new ANTLRToken;
DLGFileInput in(stdin);
DLGLexer scan(&in);
ANTLRTokenBuffer pipe(&scan);
scan.setToken(mytoken(aToken));
Expr parser(&pipe);
parser.init();
parser.e();
return 0;
}
>>
#token "[\ \t\n]+" <<skip();>>
class Expr { /* Define a grammar class */
e : IDENTIFIER NUMBER "@"
<<fprintf(stderr, "text is %s,%s\n", $1->getText(), $2->getText());>>
;
}
#token IDENTIFIER "[a-z]+"
#token NUMBER "[0-9]+"
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