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style: java: get closer to the Java style

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* examples/java/calc/Calc.y, examples/java/simple/Calc.y: here.
This commit is contained in:
Akim Demaille
2020-04-13 15:39:34 +02:00
parent 42ab6c1e44
commit 9a33570493
2 changed files with 125 additions and 143 deletions
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68
examples/java/simple/Calc.y
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@@ -14,12 +14,11 @@
}
%code {
public static void main (String[] args) throws IOException
{
CalcLexer l = new CalcLexer (System.in);
Calc p = new Calc (l);
if (!p.parse ())
System.exit (1);
public static void main(String[] args) throws IOException {
CalcLexer l = new CalcLexer(System.in);
Calc p = new Calc(l);
if (!p.parse())
System.exit(1);
}
}
@@ -42,7 +41,7 @@ input:
line:
'\n'
| exp '\n' { System.out.println ($exp); }
| exp '\n' { System.out.println($exp); }
| error '\n'
;
@@ -50,15 +49,15 @@ exp:
NUM { $$ = $1; }
| exp '=' exp
{
if ($1.intValue () != $3.intValue ())
yyerror ("calc: error: " + $1 + " != " + $3);
if ($1.intValue() != $3.intValue())
yyerror("calc: error: " + $1 + " != " + $3);
}
| exp '+' exp { $$ = $1 + $3; }
| exp '-' exp { $$ = $1 - $3; }
| exp '*' exp { $$ = $1 * $3; }
| exp '/' exp { $$ = $1 / $3; }
| '-' exp %prec NEG { $$ = -$2; }
| exp '^' exp { $$ = (int) Math.pow ($1, $3); }
| exp '^' exp { $$ = (int) Math.pow($1, $3); }
| '(' exp ')' { $$ = $2; }
| '(' error ')' { $$ = 1111; }
| '!' { $$ = 0; return YYERROR; }
@@ -71,40 +70,37 @@ class CalcLexer implements Calc.Lexer {
StreamTokenizer st;
public CalcLexer (InputStream is)
{
st = new StreamTokenizer (new InputStreamReader (is));
st.resetSyntax ();
st.eolIsSignificant (true);
st.whitespaceChars ('\t', '\t');
st.whitespaceChars (' ', ' ');
st.wordChars ('0', '9');
public CalcLexer(InputStream is) {
st = new StreamTokenizer(new InputStreamReader(is));
st.resetSyntax();
st.eolIsSignificant(true);
st.whitespaceChars('\t', '\t');
st.whitespaceChars(' ', ' ');
st.wordChars('0', '9');
}
public void yyerror (String s)
{
System.err.println (s);
public void yyerror(String s) {
System.err.println(s);
}
Integer yylval;
public Object getLVal () {
public Object getLVal() {
return yylval;
}
public int yylex () throws IOException {
int ttype = st.nextToken ();
switch (ttype)
{
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 ttype;
}
public int yylex() throws IOException {
int ttype = st.nextToken();
switch (ttype) {
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 ttype;
}
}
}