# Copyright (C) 2007 Free Software Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
-
+#
# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
AT_BANNER([[Java Calculator.]])
# ------------------------- #
-# _AT_DATA_JAVA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES], [BISON-EPILOGUE])
+# _AT_DATA_JAVA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
# ----------------------------------------------------------------------
# Produce `calc.y'. Don't call this macro directly, because it contains
# some occurrences of `$1' etc. which will be interpreted by m4. So
AT_DATA([Calc.y],
[[/* Infix notation calculator--calc */
%language "Java"
-%name-prefix "Calc"]
+%name-prefix "Calc"
%define parser_class_name "Calc"
%define public
-$4[
+]$4[
+
%code imports {
import java.io.StreamTokenizer;
import java.io.InputStream;
| '!' { $$ = new Integer (0); return YYERROR; }
| '-' error { $$ = new Integer (0); return YYERROR; }
;
+
+]AT_LEXPARAM_IF([[
+%code lexer {
+]],
+[[
%%
+class CalcLexer implements Calc.Lexer {
+]])[
+ StreamTokenizer st;
+
+ public ]AT_LEXPARAM_IF([[YYLexer]], [[CalcLexer]]) (InputStream is)
+ {
+ st = new StreamTokenizer (new InputStreamReader (is));
+ st.resetSyntax ();
+ st.eolIsSignificant (true);
+ st.whitespaceChars (9, 9);
+ st.whitespaceChars (32, 32);
+ st.wordChars (48, 57);
+ }
+
+AT_LOCATION_IF([[
+ Position yystartpos;
+ Position yyendpos = new Position (1);
- class Position {
- public int line;
-
- public Position ()
- {
- line = 0;
- }
-
- public Position (int l)
- {
- line = l;
- }
-
- public long getHashCode ()
- {
- return line;
- }
-
- public boolean equals (Position l)
- {
- return l.line == line;
- }
-
- public String toString ()
- {
- return Integer.toString (line);
- }
-
- public int lineno ()
- {
- return line;
- }
+ public Position getStartPos() {
+ return yystartpos;
}
-]$5
-])
+ public Position getEndPos() {
+ return yyendpos;
+ }
+
+ public void yyerror (Calc.Location l, String s)
+ {
+ if (l == null)
+ System.err.println (s);
+ else
+ System.err.println (l.begin + ": " + s);
+ }
+]], [[
+ public void yyerror (String s)
+ {
+ System.err.println (s);
+ }
+]])[
+
+ Integer yylval;
+
+ public Object getLVal() {
+ return yylval;
+ }
+
+ public int yylex () throws IOException {
+ int ttype = st.nextToken ();
+ ]AT_LOCATION_IF([[yystartpos = yyendpos;]])[
+ if (ttype == st.TT_EOF)
+ return Calc.EOF;
+
+ else if (ttype == st.TT_EOL)
+ {
+ ]AT_LOCATION_IF([[yyendpos = new Position (yyendpos.lineno () + 1);]])[
+ return (int) '\n';
+ }
+
+ else if (ttype == st.TT_WORD)
+ {
+ yylval = new Integer (st.sval);
+ return Calc.NUM;
+ }
+
+ else
+ return st.ttype;
+ }
+
+
+]AT_LEXPARAM_IF([[
+};
+%%]], [[
+}]])
+
+[
+class Position {
+ public int line;
+
+ public Position ()
+ {
+ line = 0;
+ }
+
+ public Position (int l)
+ {
+ line = l;
+ }
+
+ public long getHashCode ()
+ {
+ return line;
+ }
+
+ public boolean equals (Position l)
+ {
+ return l.line == line;
+ }
+
+ public String toString ()
+ {
+ return Integer.toString (line);
+ }
+
+ public int lineno ()
+ {
+ return line;
+ }
+}
+
+]])
])# _AT_DATA_JAVA_CALC_Y
-# AT_DATA_CALC_Y([BISON-OPTIONS], [BISON-EPILOGUE])
+# AT_DATA_CALC_Y([BISON-OPTIONS])
# -------------------------------------------------
# Produce `calc.y'.
m4_define([AT_DATA_JAVA_CALC_Y],
-[_AT_DATA_JAVA_CALC_Y($[1], $[2], $[3], [$1], [$2])
+[_AT_DATA_JAVA_CALC_Y($[1], $[2], $[3], [$1])
])
AT_CHECK([cat stderr], 0, [expout])
])
-# _AT_CHECK_JAVA_CALC([BISON-DIRECTIVES], [BISON-CODE], [BISON-EPILOGUE])
+# _AT_CHECK_JAVA_CALC([BISON-DIRECTIVES], [BISON-CODE])
# -----------------------------------------------------------------------
# Start a testing chunk which compiles `calc' grammar with
# BISON-DIRECTIVES, and performs several tests over the parser.
AT_DATA_JAVA_CALC_Y([$1
%code {
$2
-}], [$3])
+}])
AT_CHECK([bison -o Calc.java Calc.y])
AT_JAVA_COMPILE([Calc.java])
])# _AT_CHECK_JAVA_CALC
-# AT_CHECK_JAVA_CALC([BISON-DIRECTIVES], [BISON-EPILOGUE])
+# AT_CHECK_JAVA_CALC([BISON-DIRECTIVES])
# --------------------------------------------------------
# Start a testing chunk which compiles `calc' grammar with
# BISON-DIRECTIVES, and performs several tests over the parser.
# Run the test with and without %error-verbose.
m4_define([AT_CHECK_JAVA_CALC],
-[_AT_CHECK_JAVA_CALC([$1], [$2], [$3])
-_AT_CHECK_JAVA_CALC([%error-verbose $1], [$2], [$3])
+[_AT_CHECK_JAVA_CALC([$1], [$2])
+_AT_CHECK_JAVA_CALC([%error-verbose $1], [$2])
+_AT_CHECK_JAVA_CALC([%locations $1], [$2])
+_AT_CHECK_JAVA_CALC([%error-verbose %locations $1], [$2])
])# AT_CHECK_JAVA_CALC
# Simple LALR Calculator. #
# ------------------------ #
-dnl AT_CHECK_JAVA_CALC([], [])
-
-AT_CHECK_JAVA_CALC([%define single_class %locations], [[
- StreamTokenizer st;
-
- public Calc (InputStream is)
- {
- Reader r = new InputStreamReader (is);
- st = new StreamTokenizer(r);
- st.resetSyntax ();
- st.eolIsSignificant (true);
- st.whitespaceChars (9, 9);
- st.whitespaceChars (32, 32);
- st.wordChars (48, 57);
-
- yyendpos = new Position (1);
- }
-
- public int yylex () throws IOException {
- int ttype = st.nextToken ();
- yystartpos = yyendpos;
- if (ttype == st.TT_EOF)
- return EOF;
-
- else if (ttype == st.TT_EOL)
- {
- yyendpos = new Position (yyendpos.lineno () + 1);
- return (int) '\n';
- }
-
- else if (ttype == st.TT_WORD)
- {
- yylval = new Integer (st.sval);
- return NUM;
- }
-
- else
- return st.ttype;
- }
-
- public void yyerror (Location l, String s)
- {
- if (l == null)
- System.err.println (s);
- else
- System.err.println (l.begin + ": " + s);
- }
-
- public static void main (String args[]) throws IOException
- {
- new Calc (System.in).parse ();
- }
-]])
-
-AT_CHECK_JAVA_CALC([%pure-parser], [[
+AT_CHECK_JAVA_CALC([], [[
public static void main (String args[]) throws IOException
{
CalcLexer l = new CalcLexer (System.in);
Calc p = new Calc (l);
p.parse ();
}
-]], [[
-class CalcLexer implements Calc.Lexer {
- Integer yylval;
-
- StreamTokenizer st;
-
- public Object getLVal ()
- {
- return yylval;
- }
-
- public CalcLexer (InputStream is)
- {
- Reader r = new InputStreamReader (is);
- st = new StreamTokenizer(r);
- st.resetSyntax ();
- st.eolIsSignificant (true);
- st.whitespaceChars (9, 9);
- st.whitespaceChars (32, 32);
- st.wordChars (48, 57);
- }
-
- public int yylex () throws IOException {
- int ttype = st.nextToken ();
- if (ttype == st.TT_EOF)
- return Calc.EOF;
-
- else if (ttype == st.TT_EOL)
- return (int) '\n';
-
- else if (ttype == st.TT_WORD)
- {
- yylval = new Integer (st.sval);
- return Calc.NUM;
- }
-
- else
- return st.ttype;
- }
+]])
-
- public void yyerror (String s)
+AT_CHECK_JAVA_CALC([%lex-param { InputStream is } ], [[
+ public static void main (String args[]) throws IOException
{
- System.err.println (s);
+ new Calc (System.in).parse ();
}
-}
]])
-
-dnl AT_CHECK_JAVA_CALC([%pure-parser %locations], [])
projects / bison.git / blobdiff