m4_define([_AT_DATA_JAVA_CALC_Y],
[m4_if([$1$2$3], $[1]$[2]$[3], [],
[m4_fatal([$0: Invalid arguments: $@])])dnl
+AT_BISON_OPTION_PUSHDEFS([%language "Java" $4])
AT_DATA([Calc.y],
[[/* Infix notation calculator--calc */
%language "Java"
public Position getEndPos() {
return yypos;
}
-
- public void yyerror (Calc.Location l, String s)
- {
- if (l == null)
- System.err.println (s);
- else
- System.err.println (l + ": " + s);
- }
-]], [[
- public void yyerror (String s)
- {
- System.err.println (s);
- }
]])[
+ ]AT_YYERROR_DEFINE[
Integer yylval;
}
]])
+AT_BISON_OPTION_POPDEFS
])# _AT_DATA_JAVA_CALC_Y
# AT_DATA_CALC_Y([BISON-OPTIONS])
-# -------------------------------------------------
+# -------------------------------
# Produce `calc.y'.
m4_define([AT_DATA_JAVA_CALC_Y],
[_AT_DATA_JAVA_CALC_Y($[1], $[2], $[3], [$1])
# _AT_CHECK_JAVA_CALC_ERROR(BISON-OPTIONS, INPUT,
# [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
-# ---------------------------------------------------------
+# --------------------------------------------------------------
# Run `calc' on INPUT, and expect a `syntax error' message.
#
# If INPUT starts with a slash, it is used as absolute input file name,
AT_CHECK([[$EGREP -v ' */?\*' YYParser.java | grep 'Location']], [1], [ignore])
AT_CLEANUP
+
+
+# ----------------------------------------------- #
+# Java syntax error handling without error token. #
+# ----------------------------------------------- #
+
+AT_SETUP([Java syntax error handling without error token])
+
+AT_DATA([[YYParser.y]], [[%language "Java"
+
+%lex-param { String s }
+
+%code imports {
+ import java.io.IOException;
+}
+
+%code lexer {
+ String Input;
+ int Position;
+
+ public YYLexer (String s)
+ {
+ Input = s;
+ Position = 0;
+ }
+
+ public void yyerror (String s)
+ {
+ System.err.println (s);
+ }
+
+ public Object getLVal ()
+ {
+ return null;
+ }
+
+ public int yylex () throws IOException
+ {
+ if (Position >= Input.length ())
+ return EOF;
+ else
+ return Input.charAt (Position++);
+ }
+}
+
+%code {
+ public static void main (String args []) throws IOException
+ {
+ YYParser p = new YYParser (args [0]);
+ p.parse ();
+ }
+}
+%%
+input:
+ 'a' 'a'
+;
+]])
+AT_BISON_CHECK([[YYParser.y]])
+AT_JAVA_COMPILE([[YYParser.java]])
+AT_JAVA_PARSER_CHECK([[YYParser aa]], [[0]], [[]], [[]])
+AT_JAVA_PARSER_CHECK([[YYParser ab]], [[0]], [[]], [[syntax error
+]])
+AT_JAVA_PARSER_CHECK([[YYParser ba]], [[0]], [[]], [[syntax error
+]])
+
+AT_CLEANUP