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|
exprUnit_:
string // semval is a string
|
NUMBER // value in d_scanner.expr()
{
$$ = SemVal{ e_int | e_const, d_scanner.expr() };
}
|
identifier
{
$$ = variable($1);
}
;
exprStart_:
exprUnit_
syntaxExpression
;
expression:
exprStart_
|
'[' argsOpt ']' // list constant
{
$$ = $2.callBuiltin(Builtin::LISTCONST);
}
|
expression '[' expression ']'
{
$$ = index($1, $3); // index calls pushPrint($3)
}
|
identifier '(' argsOpt ')' // all function calls
{
$$ = function($1, move($3)); // function calls pushPrint for
// $3's elements
}
|
'`' expression '`'
{
$$ = function("`", Args{ $2 });
}
|
'(' expression ')' // was: open/closeParen
{
$$ = pushPrint($2);
}
|
'+' expression %prec '!'
{
$$ = $2;
}
|
'-' expression %prec '!'
{
$$ = $2.negate();
}
|
'~'
expression %prec '!'
{
$$ = $2.bitNot();
}
|
'!' expression
{
$$ = $2.boolNot();
}
|
INCDEC opValue expression
{
$$ = $3.incDec($2, e_prefix);
}
|
expression INCDEC opValue
{
$$ = $1.incDec($3, e_postfix);
}
|
'(' cast ')' expression %prec '!'
{
$$ = $4.cast($2);
}
|
expression '+' expression // operators with higher prioritoes:
{ // no pushPrint
$$ = $1.binary(Opcode::add, move($3));
}
|
expression '-' expression
{
$$ = $1.binary(Opcode::sub, move($3));
}
|
expression MULTIPLY opValue expression
{
$$ = $1.binary($3, move($4));
}
|
expression SHIFT opValue expression
{
$$ = shiftOrPrint($1, $3, $4); // e_(f)printf is set by variable()
}
|
expression ORDER opValue expression
{
$$ = binary($1, $3, $4);
}
|
expression EQUALITY opValue expression
{
$$ = binary($1, $3, $4); // Parser::binary handles print insertions
}
|
expression '&' expression
{
$$ = binary($1, Opcode::band, $3);
}
|
expression '^' expression
{
$$ = binary($1, Opcode::bxor, $3);
}
|
expression '|' expression
{
$$ = binary($1, Opcode::bor, $3);
}
|
expression AND expression
{
$$ = pushPrint($1).logicAnd(pushPrint($3));
}
|
expression OR expression
{
$$ = pushPrint($1).logicOr(pushPrint($3));
}
|
expression '?' expression ':' expression
{
$$ = pushPrint($1).ternary(pushPrint($3), pushPrint($5));
}
|
expression '=' expression // operators with lower prioritoes than '<<'
{ // use pushPrint to handle print insertions
$$ = $1.assign(pushPrint($3), Opcode::copy_var);
}
|
expression MATH_IS opValue expression
{
$$ = $1.compound($3, pushPrint($4));
}
;
|
