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|
%default-actions quiet
%scanner ../scanner/scanner.h
%baseclass-preinclude ../rulevalue/_rulevalue.h
%filenames parser
//%debug
%stype RuleValue
%token IDENT
QUIT
LIST
INT CHAR
DOUBLE
DATATYPE
ANGLETYPE
MATHCONST
HELP
// A of 'assignment'. Priorities: see C book, p. 518
%right '=' ADDA SUBA MULA DIVA MODA ANDA XORA ORA LSHIFTA RSHIFTA
%left '|'
%left '^'
%left '&'
%left LEFTSHIFT RIGHTSHIFT
%left '+' '-'
%left '*' '/' '%'
%right uMinus
%left '('
%%
start:
prompt
lines
;
lines:
lines line
|
line
;
line:
action
prompt
;
action:
cmd
'\n'
|
error
;
prompt:
{
prompt();
}
;
cmd:
QUIT
{
ACCEPT();
}
|
LIST
{
list();
}
|
help
{
help();
}
|
angletype
|
expr
{
display($1);
}
|
// empty
;
angletype:
ANGLETYPE
{
setAngleType();
}
;
expr:
MATHCONST
{
$$ = mathConst();
}
|
CHAR
{
$$ = newValue(CHAR);
}
|
INT
{
$$ = newValue(INT);
}
|
DOUBLE
{
$$ = newValue(DOUBLE);
}
|
IDENT
{
$$ = newValue(IDENT);
}
|
expr '(' arglist ')'
{
$$ = call($1, $3);
}
|
'-' expr %prec uMinus
{
$$ = unary('-', $2);
}
|
'~' expr %prec uMinus
{
$$ = unary('~', $2);
}
|
'(' type ')' expr %prec uMinus
{
$$ = unary($2.asInt(), $4);
}
|
expr '+' expr
{
$$ = binary($1, '+', $3);
}
|
expr '-' expr
{
$$ = binary($1, '-', $3);
}
|
expr '*' expr
{
$$ = binary($1, '*', $3);
}
|
expr '/' expr
{
$$ = binary($1, '/', $3);
}
|
expr '%' expr
{
$$ = binary($1, '%', $3);
}
|
expr '&' expr
{
$$ = binary($1, '&', $3);
}
|
expr '^' expr
{
$$ = binary($1, '^', $3);
}
|
expr '|' expr
{
$$ = binary($1, '|', $3);
}
|
expr RIGHTSHIFT expr
{
$$ = binary($1, RIGHTSHIFT, $3);
}
|
expr LEFTSHIFT expr
{
$$ = binary($1, LEFTSHIFT, $3);
}
|
'(' expr ')'
{
$$ = $2;
}
|
expr '=' expr
{
$$ = assign($1, '=', $3);
}
|
expr ADDA expr
{
$$ = assign($1, ADDA, $3);
}
|
expr SUBA expr
{
$$ = assign($1, SUBA, $3);
}
|
expr MULA expr
{
$$ = assign($1, MULA, $3);
}
|
expr DIVA expr
{
$$ = assign($1, DIVA, $3);
}
|
expr MODA expr
{
$$ = assign($1, MODA, $3);
}
|
expr ANDA expr
{
$$ = assign($1, ANDA, $3);
}
|
expr ORA expr
{
$$ = assign($1, ORA, $3);
}
|
expr XORA expr
{
$$ = assign($1, XORA, $3);
}
|
expr LSHIFTA expr
{
$$ = assign($1, LSHIFTA, $3);
}
|
expr RSHIFTA expr
{
$$ = assign($1, RSHIFTA, $3);
}
;
arglist:
arglist ',' expr
{
$$ = addArg($1, $3);
}
|
expr
{
$$ = firstArg($1);
}
;
type:
DATATYPE
{
$$ = setDataType();
}
;
help:
'?'
|
HELP
;
|
