# Checking Java Push Parsing.                            -*- Autotest -*-

# Copyright (C) 2013-2015, 2018-2019 Free Software Foundation, Inc.

# 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 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, see <http://www.gnu.org/licenses/>.

# The Java push parser tests are intended primarily
# to verify that the sequence of states that the parser
# traverses is the same as a pull parser would traverse.

##################################################
# Provide a way to generate data with and without push parsing
# so  it is possible to capture the output for comparison
# (except the "trivial" tests).
# Use "both" rather than "push" so we can also set it to "pull" to
# get the "experr" data.

m4_define([PUSHPULLFLAG],[-Dapi.push-pull=both])

# AT_CHECK_JAVA_GREP(FILE, [LINE], [COUNT=1])
# -------------------------------------------
# Check that FILE contains exactly COUNT lines matching ^LINE$
# with grep.  Unquoted so that COUNT can be a shell expression.
m4_define([AT_CHECK_JAVA_GREP],
[AT_CHECK_UNQUOTED([grep -c '^$2$' $1], [ignore], [m4_default([$3], [1])
])])

##################################################

AT_BANNER([[Java Push Parsing Tests]])

# Define a single copy of the trivial parser grammar.
# This is missing main(), so two versions
# are instantiated with different main() procedures.
m4_define([AT_TRIVIAL_GRAMMAR],
[[
%define api.parser.class {YYParser}
%define parse.error verbose
%define parse.trace

%code imports {
import java.io.*;
import java.util.*;
}

%%

start: 'a' 'b' 'c' ;

%%
]])

# Define comon code across to be included in
# class Main for the trivial parser tests.
m4_define([AT_TRIVIAL_COMMON],[[
  static class YYerror implements YYParser.Lexer
  {
    public Object getLVal() {return null;}
    public int yylex () throws java.io.IOException { return 0; }
    public void yyerror (String msg) { System.err.println(msg); }
  }

  static YYParser parser = null;
  static YYerror yyerror = null;
  static int teststate = -1;

  static void setup()
    throws IOException
  {
      yyerror = new YYerror();
      parser = new YYParser(yyerror);
      parser.setDebugLevel(1);
      teststate = -1;
  }

  static String[] teststatename
    = new String[]{"YYACCEPT","YYABORT","YYERROR","UNKNOWN","YYPUSH_MORE"};

  static void check(int teststate, int expected, String msg)
  {
    System.err.println("teststate="+teststatename[teststate]
                       +"; expected="+teststatename[expected]);
    if (teststate != expected)
        {
            System.err.println("unexpected state: "+msg);
            System.exit(1);
        }
  }
]])

m4_define([AT_TRIVIAL_PARSER],[[
  ]AT_TRIVIAL_GRAMMAR[

  public class Main
  {

  ]AT_TRIVIAL_COMMON[

  static public void main (String[] args)
    throws IOException
  {
      setup();

      teststate = parser.push_parse('a', null);
      check(teststate,YYParser.YYPUSH_MORE,"push_parse('a', null)");

      setup();

      teststate = parser.push_parse('a', null);
      check(teststate,YYParser.YYPUSH_MORE,"push_parse('a', null)");
      teststate = parser.push_parse('b', null);
      check(teststate,YYParser.YYPUSH_MORE,"push_parse('b', null)");
      teststate = parser.push_parse('c', null);
      check(teststate,YYParser.YYPUSH_MORE,"push_parse('c', null)");
      teststate = parser.push_parse('\0', null);
      check(teststate,YYParser.YYACCEPT,"push_parse('\\0', null)");

      /* Reuse the parser instance and cause a failure */
      teststate = parser.push_parse('b', null);
      check(teststate,YYParser.YYABORT,"push_parse('b', null)");

      System.exit(0);
  }

}
]])

m4_define([AT_TRIVIAL_PARSER_INITIAL_ACTION],[[
  ]AT_TRIVIAL_GRAMMAR[

  public class Main
  {

  ]AT_TRIVIAL_COMMON[

  static public void main (String[] args)
    throws IOException
  {
      setup();

      teststate = parser.push_parse('a', null);
      check(teststate,YYParser.YYPUSH_MORE,"push_parse('a', null)");
      teststate = parser.push_parse('b', null);
      check(teststate,YYParser.YYPUSH_MORE,"push_parse('b', null)");
      teststate = parser.push_parse('c', null);
      check(teststate,YYParser.YYPUSH_MORE,"push_parse('c', null)");
      teststate = parser.push_parse('\0', null);
      check(teststate,YYParser.YYACCEPT,"push_parse('\\0', null)");

      System.exit(0);
  }

}
]])

## ----------------------------------------------------- ##
## Trivial Push Parser with api.push-pull verification.  ##
## ----------------------------------------------------- ##

AT_SETUP([Trivial Push Parser with api.push-pull verification])
AT_BISON_OPTION_PUSHDEFS

AT_DATA([[input.y]],
[[%language "Java"
]AT_TRIVIAL_PARSER[
]])

# Verify that the proper procedure(s) are generated for each case.
AT_BISON_CHECK([[-Dapi.push-pull=pull -o Main.java input.y]])
AT_CHECK_JAVA_GREP([[Main.java]],
                   [[.*public boolean parse ().*]],
                   [1])
# If BISON_USE_PUSH_FOR_PULL is set, then we have one occurrence of
# this function, otherwise it should not be there.
AT_CHECK_JAVA_GREP([[Main.java]],
        [[.*public int push_parse (int yylextoken, Object yylexval).*]],
        [${BISON_USE_PUSH_FOR_PULL-0}])

AT_BISON_CHECK([[-Dapi.push-pull=both -o Main.java input.y]])
AT_CHECK_JAVA_GREP([[Main.java]],
                   [[.*public boolean parse ().*]],
                   [1])
AT_CHECK_JAVA_GREP([[Main.java]],
        [[.*public int push_parse (int yylextoken, Object yylexval).*]],
        [1])

AT_BISON_CHECK([[-Dapi.push-pull=push -o Main.java input.y]])
AT_CHECK_JAVA_GREP([[Main.java]],
                   [[.*public boolean parse ().*]],
                   [0])
AT_CHECK_JAVA_GREP([[Main.java]],
        [[.*public int push_parse (int yylextoken, Object yylexval).*]],
        [1])

AT_JAVA_COMPILE([[Main.java]])
AT_JAVA_PARSER_CHECK([Main], 0, [], [stderr-nolog])
AT_BISON_OPTION_POPDEFS
AT_CLEANUP


## ------------------------------------------ ##
## Trivial Push Parser with %initial-action.  ##
## ------------------------------------------ ##

AT_SETUP([Trivial Push Parser with %initial-action])
AT_BISON_OPTION_PUSHDEFS
AT_DATA([[input.y]],
[[%language "Java"
%initial-action {
System.err.println("Initial action invoked");
}
]AT_TRIVIAL_PARSER_INITIAL_ACTION[
]])
AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-Dapi.push-pull=push -o Main.java input.y]])
AT_CHECK_JAVA_GREP([[Main.java]],
  [[System.err.println("Initial action invoked");]])
AT_JAVA_COMPILE([[Main.java]])
AT_JAVA_PARSER_CHECK([Main], 0, [], [stderr-nolog])
# Verify that initial action is called exactly once.
AT_CHECK_JAVA_GREP(
        [[stderr]],
        [[Initial action invoked]],
        [1])
AT_CLEANUP

# Define a single copy of the Calculator grammar.
m4_define([AT_CALC_BODY],[
%code imports {
  import java.io.*;
}

%code {
  static StringReader
  getinput(String filename) throws IOException
  {
    // Yes, there are better alternatives to StringBuffer.  But we
    // don't really care about performances here, while portability
    // to older Java matters.
    StringBuffer buf = new StringBuffer();
    FileReader file = new FileReader(filename);
    int c;
    while (0 < (c = file.read()))
      buf.append((char)c);
    file.close();
    return new StringReader(buf.toString());
  }
}

/* Bison Declarations */
%token <Integer> NUM "number"
%type  <Integer> exp

%nonassoc '=' /* comparison            */
%left '-' '+'
%left '*' '/'
%left NEG     /* negation--unary minus */
%right '^'    /* exponentiation        */

/* Grammar follows */
%%
input:
  line
| input line
;

line:
  '\n'
| exp '\n'    { System.out.println("total = "+$[]1); }
| error '\n'
;

exp:
  NUM                { $[]$ = $[]1;}
| exp '=' exp
  {
    if ($[]1.intValue() != $[]3.intValue())
      yyerror (]AT_LOCATION_IF([[@$,]])[ "calc: error: " + $[]1 + " != " + $[]3);
  }
| exp '+' exp
    { $[]$ = new Integer ($[]1.intValue () + $[]3.intValue ());  }
| exp '-' exp
    { $[]$ = new Integer ($[]1.intValue () - $[]3.intValue ());  }
| exp '*' exp
    { $[]$ = new Integer ($[]1.intValue () * $[]3.intValue ());  }
| exp '/' exp
    { $[]$ = new Integer ($[]1.intValue () / $[]3.intValue ());  }
| '-' exp  %prec NEG
    { $[]$ = new Integer (-$[]2.intValue ());                    }
| exp '^' exp
    { $[]$ = new Integer ((int)Math.pow ($[]1.intValue (),
                                         $[]3.intValue ()));     }
| '(' exp ')'        { $[]$ = $[]2;}
| '(' error ')'      { $[]$ = new Integer (1111);}
| '!'                { $[]$ = new Integer (0); return YYERROR;}
| '-' error          { $[]$ = new Integer (0); return YYERROR;}
;
])


## ------------------------------------- ##
## Calc parser with api.push-pull both.  ##
## ------------------------------------- ##


# Test that the states transitioned by the push parser are the
# same as for the pull parser.  This test is assumed to work
# if it produces the same partial trace of stack states as is
# produced when using pull parsing.  The output is verbose,
# but seems essential for verifying push parsing.

AT_SETUP([Calc parser with api.push-pull both])
AT_BISON_OPTION_PUSHDEFS

# Define the calculator input.
# Warning: if you changes the input file
# then the locations test file position numbers
# may be incorrect and you will have
# to modify that file as well.

AT_DATA([input],
[[1 + 2 * 3 = 7
1 + 2 * -3 = -5

-1^2 = -1
(-1)^2 = 1

---1 = -1

1 - 2 - 3 = -4
1 - (2 - 3) = 2

2^2^3 = 256
(2^2)^3 = 64
]])

# Compose pieces to build the actual .y file.
AT_DATA([Calc.y],
[[/* Infix notation calculator--calc */
%language "Java"

%define api.parser.class {Calc}
%define parse.trace

%code {
  static class UserLexer implements Calc.Lexer
  {
    StreamTokenizer st;
    StringReader rdr;

    public UserLexer(StringReader reader)
    {
      rdr = reader;
      st = new StreamTokenizer(rdr);
      st.resetSyntax();
      st.eolIsSignificant(true);
      st.whitespaceChars('\t', '\t');
      st.whitespaceChars(' ', ' ');
      st.wordChars('0', '9');
    }

    Integer yylval;

    public Object getLVal() { return yylval; }

    public void yyerror(String msg) { System.err.println(msg); }

    public int yylex () throws IOException
    {
      switch (st.nextToken()) {
      case StreamTokenizer.TT_EOF: return EOF;
      case StreamTokenizer.TT_EOL: return (int) '\n';
      case StreamTokenizer.TT_WORD:
          yylval = new Integer (st.sval);
          return NUM;
      default: return st.ttype;
      }
    }
  }
}

%code {
  public static void main (String[] args)
        throws IOException
  {
      StringReader reader = getinput(args[0]);
      UserLexer lexer = new UserLexer(reader);
      Calc calc = new Calc(lexer);
      calc.setDebugLevel(1);
      calc.parse();
  }//main
}

]AT_CALC_BODY[

]])

# This data was captured from running a pull parser.
AT_DATA([[expout]],[[Stack now 0
Stack now 0 2
Stack now 0 9
Stack now 0 9 19
Stack now 0 9 19 2
Stack now 0 9 19 28
Stack now 0 9 19 28 20
Stack now 0 9 19 28 20 2
Stack now 0 9 19 28 20 29
Stack now 0 9 19 28
Stack now 0 9
Stack now 0 9 17
Stack now 0 9 17 2
Stack now 0 9 17 26
Stack now 0 9
Stack now 0 9 23
Stack now 0 8
Stack now 0 7
Stack now 0 7 2
Stack now 0 7 9
Stack now 0 7 9 19
Stack now 0 7 9 19 2
Stack now 0 7 9 19 28
Stack now 0 7 9 19 28 20
Stack now 0 7 9 19 28 20 3
Stack now 0 7 9 19 28 20 3 2
Stack now 0 7 9 19 28 20 3 12
Stack now 0 7 9 19 28 20 29
Stack now 0 7 9 19 28
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 3
Stack now 0 7 9 17 3 2
Stack now 0 7 9 17 3 12
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 4
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 3
Stack now 0 7 3 2
Stack now 0 7 3 12
Stack now 0 7 3 12 22
Stack now 0 7 3 12 22 2
Stack now 0 7 3 12 22 31
Stack now 0 7 3 12
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 3
Stack now 0 7 9 17 3 2
Stack now 0 7 9 17 3 12
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 5
Stack now 0 7 5 3
Stack now 0 7 5 3 2
Stack now 0 7 5 3 12
Stack now 0 7 5 14
Stack now 0 7 5 14 25
Stack now 0 7 9
Stack now 0 7 9 22
Stack now 0 7 9 22 2
Stack now 0 7 9 22 31
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 2
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 4
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 3
Stack now 0 7 3 3
Stack now 0 7 3 3 3
Stack now 0 7 3 3 3 2
Stack now 0 7 3 3 3 12
Stack now 0 7 3 3 12
Stack now 0 7 3 12
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 3
Stack now 0 7 9 17 3 2
Stack now 0 7 9 17 3 12
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 4
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 2
Stack now 0 7 9
Stack now 0 7 9 18
Stack now 0 7 9 18 2
Stack now 0 7 9 18 27
Stack now 0 7 9
Stack now 0 7 9 18
Stack now 0 7 9 18 2
Stack now 0 7 9 18 27
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 3
Stack now 0 7 9 17 3 2
Stack now 0 7 9 17 3 12
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 2
Stack now 0 7 9
Stack now 0 7 9 18
Stack now 0 7 9 18 5
Stack now 0 7 9 18 5 2
Stack now 0 7 9 18 5 14
Stack now 0 7 9 18 5 14 18
Stack now 0 7 9 18 5 14 18 2
Stack now 0 7 9 18 5 14 18 27
Stack now 0 7 9 18 5 14
Stack now 0 7 9 18 5 14 25
Stack now 0 7 9 18 27
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 2
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 4
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 2
Stack now 0 7 9
Stack now 0 7 9 22
Stack now 0 7 9 22 2
Stack now 0 7 9 22 31
Stack now 0 7 9 22 31 22
Stack now 0 7 9 22 31 22 2
Stack now 0 7 9 22 31 22 31
Stack now 0 7 9 22 31
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 2
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 5
Stack now 0 7 5 2
Stack now 0 7 5 14
Stack now 0 7 5 14 22
Stack now 0 7 5 14 22 2
Stack now 0 7 5 14 22 31
Stack now 0 7 5 14
Stack now 0 7 5 14 25
Stack now 0 7 9
Stack now 0 7 9 22
Stack now 0 7 9 22 2
Stack now 0 7 9 22 31
Stack now 0 7 9
Stack now 0 7 9 17
Stack now 0 7 9 17 2
Stack now 0 7 9 17 26
Stack now 0 7 9
Stack now 0 7 9 23
Stack now 0 7 16
Stack now 0 7
Stack now 0 7 15
]])

AT_BISON_CHECK([PUSHPULLFLAG [-o Calc.java Calc.y]])

AT_JAVA_COMPILE([[Calc.java]])
# Verify that this is a push parser.
AT_CHECK_JAVA_GREP([[Calc.java]],
                   [[.*public void push_parse_initialize().*]])
# Capture stderr output for comparison purposes.
AT_JAVA_PARSER_CHECK([Calc input], 0, [ignore-nolog], [stderr-nolog])
# Extract the "Stack Now" lines from the error output,
# send them to stdout (via the sed command) and compare to expout.
# NOTE: because the target is "expout", this macro automatically
# compares the output of the sed command with the contents of
# the file "expout" (defined above).
AT_CHECK([[sed -e '/^Stack now.*$/p' -e d ./stderr]],
         [ignore], [expout], [ignore-nolog])
AT_BISON_OPTION_POPDEFS
AT_CLEANUP


## ---------------------------------------------------------------- ##
## Calc parser with %locations %code lexer and api.push-pull both.  ##
## ---------------------------------------------------------------- ##


# This test looks for location reporting by looking
# at the lexer output with locations enabled.
# It defines a lexer that reports location info.
AT_SETUP([Calc parser with %locations %code lexer and api.push-pull both])
AT_BISON_OPTION_PUSHDEFS

AT_DATA([Calc.y],
[[/* Infix notation calculator--calc.  */
%language "Java"

%define api.parser.class {Calc}
%define parse.trace
%lex-param { Reader rdr }
%locations

%code imports {
  import java.io.*;
}

%code lexer {
  StreamTokenizer st;
  Integer yylval;

  public YYLexer(Reader rdr)
  {
    st = new StreamTokenizer(rdr);
    st.resetSyntax();
    st.eolIsSignificant(true);
    st.whitespaceChars('\t', '\t');
    st.whitespaceChars(' ', ' ');
    st.wordChars('0', '9');
  }

  Position yypos = new Position (1, 0);

  public Position getStartPos() { return yypos; }

  public Position getEndPos() { return yypos; }

  public Object getLVal() { return yylval; }

  public void yyerror(Location loc, String msg)
  {
    System.err.println(loc+":"+msg);
  }

  public int yylex () throws IOException
  {
    yypos = new Position (yypos.lineno (),yypos.token () + 1);
    switch (st.nextToken()) {
    case StreamTokenizer.TT_EOF:
        return EOF;
    case StreamTokenizer.TT_EOL:
        yypos = new Position (yypos.lineno () + 1, 0);
        return (int) '\n';
    case StreamTokenizer.TT_WORD:
        yylval = new Integer (st.sval);
        return NUM;
    default:
      return st.ttype;
    }
  }
}

%code { ]AT_JAVA_POSITION_DEFINE[ }

%code {
  public static void main (String[] args)
          throws IOException
  {
    StringReader reader = getinput(args[0]);
    Calc calc = new Calc(reader);
    calc.setDebugLevel(1);
    calc.parse();
  }
}

]AT_CALC_BODY[

]])

# Define the expected calculator output.
# This should match the output from a pull parser.
AT_DATA([output],[[total = 7
total = -5
total = -1
total = 1
total = -1
total = -4
total = 2
total = 256
total = 64
]])

AT_DATA([locations],[[Next token is token "number" (1.1: 1)
Next token is token '+' (1.2: 1)
Next token is token "number" (1.3: 2)
Next token is token '*' (1.4: 2)
Next token is token "number" (1.5: 3)
Next token is token '=' (1.6: 3)
Next token is token '=' (1.6: 3)
Next token is token '=' (1.6: 3)
Next token is token "number" (1.7: 7)
Next token is token '\n' (2.0: 7)
Next token is token '\n' (2.0: 7)
Next token is token "number" (2.1: 1)
Next token is token '+' (2.2: 1)
Next token is token "number" (2.3: 2)
Next token is token '*' (2.4: 2)
Next token is token '-' (2.5: 2)
Next token is token "number" (2.6: 3)
Next token is token '=' (2.7: 3)
Next token is token '=' (2.7: 3)
Next token is token '=' (2.7: 3)
Next token is token '=' (2.7: 3)
Next token is token '-' (2.8: 3)
Next token is token "number" (2.9: 5)
Next token is token '\n' (3.0: 5)
Next token is token '\n' (3.0: 5)
Next token is token '\n' (3.0: 5)
Next token is token '\n' (4.0: 5)
Next token is token '-' (4.1: 5)
Next token is token "number" (4.2: 1)
Next token is token '^' (4.3: 1)
Next token is token "number" (4.4: 2)
Next token is token '=' (4.5: 2)
Next token is token '=' (4.5: 2)
Next token is token '=' (4.5: 2)
Next token is token '-' (4.6: 2)
Next token is token "number" (4.7: 1)
Next token is token '\n' (5.0: 1)
Next token is token '\n' (5.0: 1)
Next token is token '\n' (5.0: 1)
Next token is token '(' (5.1: 1)
Next token is token '-' (5.2: 1)
Next token is token "number" (5.3: 1)
Next token is token ')' (5.4: 1)
Next token is token ')' (5.4: 1)
Next token is token '^' (5.5: 1)
Next token is token "number" (5.6: 2)
Next token is token '=' (5.7: 2)
Next token is token '=' (5.7: 2)
Next token is token "number" (5.8: 1)
Next token is token '\n' (6.0: 1)
Next token is token '\n' (6.0: 1)
Next token is token '\n' (7.0: 1)
Next token is token '-' (7.1: 1)
Next token is token '-' (7.2: 1)
Next token is token '-' (7.3: 1)
Next token is token "number" (7.4: 1)
Next token is token '=' (7.5: 1)
Next token is token '=' (7.5: 1)
Next token is token '=' (7.5: 1)
Next token is token '=' (7.5: 1)
Next token is token '-' (7.6: 1)
Next token is token "number" (7.7: 1)
Next token is token '\n' (8.0: 1)
Next token is token '\n' (8.0: 1)
Next token is token '\n' (8.0: 1)
Next token is token '\n' (9.0: 1)
Next token is token "number" (9.1: 1)
Next token is token '-' (9.2: 1)
Next token is token "number" (9.3: 2)
Next token is token '-' (9.4: 2)
Next token is token '-' (9.4: 2)
Next token is token "number" (9.5: 3)
Next token is token '=' (9.6: 3)
Next token is token '=' (9.6: 3)
Next token is token '-' (9.7: 3)
Next token is token "number" (9.8: 4)
Next token is token '\n' (10.0: 4)
Next token is token '\n' (10.0: 4)
Next token is token '\n' (10.0: 4)
Next token is token "number" (10.1: 1)
Next token is token '-' (10.2: 1)
Next token is token '(' (10.3: 1)
Next token is token "number" (10.4: 2)
Next token is token '-' (10.5: 2)
Next token is token "number" (10.6: 3)
Next token is token ')' (10.7: 3)
Next token is token ')' (10.7: 3)
Next token is token '=' (10.8: 3)
Next token is token '=' (10.8: 3)
Next token is token "number" (10.9: 2)
Next token is token '\n' (11.0: 2)
Next token is token '\n' (11.0: 2)
Next token is token '\n' (12.0: 2)
Next token is token "number" (12.1: 2)
Next token is token '^' (12.2: 2)
Next token is token "number" (12.3: 2)
Next token is token '^' (12.4: 2)
Next token is token "number" (12.5: 3)
Next token is token '=' (12.6: 3)
Next token is token '=' (12.6: 3)
Next token is token '=' (12.6: 3)
Next token is token "number" (12.7: 256)
Next token is token '\n' (13.0: 256)
Next token is token '\n' (13.0: 256)
Next token is token '(' (13.1: 256)
Next token is token "number" (13.2: 2)
Next token is token '^' (13.3: 2)
Next token is token "number" (13.4: 2)
Next token is token ')' (13.5: 2)
Next token is token ')' (13.5: 2)
Next token is token '^' (13.6: 2)
Next token is token "number" (13.7: 3)
Next token is token '=' (13.8: 3)
Next token is token '=' (13.8: 3)
Next token is token "number" (13.9: 64)
Next token is token '\n' (14.0: 64)
Next token is token '\n' (14.0: 64)
Next token is token $end (14.1: 64)
]])

# Define the calculator input.
# Warning: if you changes the input file
# then the locations test file position numbers
# may be incorrect and you will have
# to modify that file as well.

AT_DATA([input],
[[1 + 2 * 3 = 7
1 + 2 * -3 = -5

-1^2 = -1
(-1)^2 = 1

---1 = -1

1 - 2 - 3 = -4
1 - (2 - 3) = 2

2^2^3 = 256
(2^2)^3 = 64
]])

AT_BISON_CHECK([PUSHPULLFLAG [-o Calc.java Calc.y]])
AT_JAVA_COMPILE([[Calc.java]])
# Verify that this is a push parser
AT_CHECK_JAVA_GREP([[Calc.java]],
                   [[.*public void push_parse_initialize().*]])
# Capture the  stdout and stderr output for comparison purposes.
AT_JAVA_PARSER_CHECK([Calc input], 0, [stdout-nolog], [stderr-nolog])
# 1. Check that the token locations are correct
AT_CHECK([[cp -f ./locations ./expout]],[ignore],[ignore-nolog],[ignore-nolog])
AT_CHECK([[sed -e '/^Next token.*$/p' -e d ./stderr]],[ignore],[expout],[ignore-nolog])
# 2. Check that the calculator output matches that of a pull parser
AT_CHECK([[rm -f ./expout; cp -f ./output ./expout]],[ignore],[ignore-nolog],[ignore-nolog])
AT_CHECK([[cat ./stdout]],[ignore],[expout],[ignore-nolog])
AT_CLEANUP