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Resolve lexicals as a separate pass before to_anf
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| use 5.010; | ||
| use strict; | ||
| use warnings; | ||
| use utf8; | ||
|
|
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| package ResolveLex; | ||
|
|
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| sub run { | ||
| my ($unit) = @_; | ||
|
|
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| run_body($unit->mainline); | ||
| run_cgop($unit->bootcgop, []); | ||
| } | ||
|
|
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| sub run_body { | ||
| my ($body) = @_; | ||
|
|
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| for my $d (@{ $body->decls }) { | ||
| for my $b ($d->bodies) { | ||
| run_body($b); | ||
| } | ||
| } | ||
|
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| local %::haslet; | ||
| run_cgop($body->cgoptree, [ $body ]); | ||
| } | ||
|
|
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| sub run_cgop { | ||
| my ($op, $btree) = @_; | ||
| my $lvl = scalar @$btree; | ||
|
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| if ($op->isa('CgOp::Let')) { | ||
| local $::haslet{$op->name} = 1; | ||
| run_cgop($_, $btree) for @{ $op->zyg }; | ||
| } else { | ||
| run_cgop($_, $btree) for @{ $op->zyg }; | ||
| } | ||
|
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| if ($op->isa('CgOp::Primitive')) { | ||
| my ($opc, $arg, @rest) = @{ $op->op }; | ||
| if ($opc eq 'open_protopad') { | ||
| push @$btree, $arg; | ||
| } elsif ($opc eq 'close_sub') { | ||
| pop @$btree; | ||
| } elsif ($opc eq 'scopelex') { | ||
| my $nn = resolve_lex($arg, $btree->[-1], $op->zyg->[0]); | ||
| #XXX | ||
| %$op = %$nn; | ||
| bless $op, ref($nn); | ||
| } | ||
| } | ||
| } | ||
|
|
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| sub resolve_lex { | ||
| my ($name, $body, $set_to) = @_; | ||
|
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| if ($::haslet{$name}) { | ||
| return CgOp::letvar($name, $set_to); | ||
| } | ||
|
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| my ($order, $type, $kind, $data) = $body->lex_info($name); | ||
| if ($order < 0) { | ||
| #print STDERR YAML::XS::Dump ($body); | ||
| die "Internal error: failed to resolve lexical $name in " . $body->name; | ||
| } | ||
|
|
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| if (($kind == 1 || $kind == 2) && $data =~ /(.*)\./) { | ||
| $::UNITDEPS{$1} = 1; | ||
| } | ||
|
|
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| if ($kind == 2) { | ||
| if ($set_to) { | ||
| die "panic: Assigning to a hint"; | ||
| } else { | ||
| return CgOp::Primitive->new(op => ['hintget', $type, $data, $name]); | ||
| } | ||
| } elsif ($kind == 1) { | ||
| if ($set_to) { | ||
| return CgOp::rawsset($data, $set_to); | ||
| } else { | ||
| return CgOp::rawsget($data . ":f," . $type); | ||
| } | ||
| } elsif ($kind == 0) { | ||
| if ($set_to) { | ||
| return CgOp::Primitive->new(op => ['rtpadput', $order, $name], | ||
| zyg => [$set_to]); | ||
| } else { | ||
| return CgOp::Primitive->new(op => ['rtpadget', $type, $order, $name]); | ||
| } | ||
| } else { | ||
| die "panic: invalid kind $kind"; | ||
| } | ||
| } | ||
|
|
||
| 1; |