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remove Symbol::empty

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the only use of this function is to determine whether a lambda has a non-set
formal, but this use is arguably better served by Symbol::set and using a
non-Symbol instead of an empty symbol in the parser when no such formal is present.
This commit is contained in:
pennae 2022-03-05 14:20:25 +01:00
parent 90b5c0a1a6
commit ff0fd91ed2
5 changed files with 8 additions and 13 deletions
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2
src/libexpr/parser.y
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@ -369,7 +369,7 @@ expr_function
: ID ':' expr_function
{ $$ = new ExprLambda(CUR_POS, data->symbols.create($1), 0, $3); }
| '{' formals '}' ':' expr_function
{ $$ = new ExprLambda(CUR_POS, data->symbols.create(""), toFormals(*data, $2), $5); }
{ $$ = new ExprLambda(CUR_POS, {}, toFormals(*data, $2), $5); }
| '{' formals '}' '@' ID ':' expr_function
{
Symbol arg = data->symbols.create($5);