added DD::Context::Simple, which packages the synopsis (or method_no_semi.t) for...

[p5sagit/Devel-Declare.git] / lib / Devel / Declare / Context / Simple.pm

diff --git a/lib/Devel/Declare/Context/Simple.pm b/lib/Devel/Declare/Context/Simple.pm
new file mode 100644 (file)
index 0000000..268514c
--- /dev/null
+++ b/lib/Devel/Declare/Context/Simple.pm
@@ -0,0 +1,101 @@
+package Devel::Declare::Context::Simple;
+
+use Devel::Declare ();
+use Scope::Guard;
+use strict;
+use warnings;
+
+sub new {
+    my $class = shift;
+    bless {@_}, $class;
+}
+
+sub init {
+    my $ctx = shift;
+    @{$ctx}{ qw(Declarator Offset) } = @_;
+    $ctx;
+}
+
+sub offset : lvalue { shift->{Offset}; }
+sub declarator { shift->{Declarator} }
+
+sub skip_declarator {
+    my $ctx = shift;
+    $ctx->offset += Devel::Declare::toke_move_past_token( $ctx->offset );
+}
+
+sub skipspace {
+    my $ctx = shift;
+    $ctx->offset += Devel::Declare::toke_skipspace( $ctx->offset );
+}
+
+sub strip_name {
+    my $ctx = shift;
+    $ctx->skipspace;
+    if( my $len = Devel::Declare::toke_scan_word( $ctx->offset, 1 ) ) {
+        my $linestr = Devel::Declare::get_linestr();
+        my $name = substr( $linestr, $ctx->offset, $len );
+        substr( $linestr, $ctx->offset, $len ) = '';
+        Devel::Declare::set_linestr($linestr);
+        return $name;
+    }
+    return;
+}
+
+sub strip_proto {
+    my $ctx = shift;
+    $ctx->skipspace;
+
+    my $linestr = Devel::Declare::get_linestr();
+    if( substr( $linestr, $ctx->offset, 1 ) eq '(' ) {
+        my $length = Devel::Declare::toke_scan_str( $ctx->offset );
+        my $proto  = Devel::Declare::get_lex_stuff();
+        Devel::Declare::clear_lex_stuff();
+        $linestr = Devel::Declare::get_linestr();
+        substr( $linestr, $ctx->offset, $length ) = '';
+        Devel::Declare::set_linestr($linestr);
+        return $proto;
+    }
+    return;
+}
+
+sub get_curstash_name {
+    return Devel::Declare::get_curstash_name;
+}
+
+sub shadow {
+    my $ctx  = shift;
+    my $pack = $ctx->get_curstash_name;
+    Devel::Declare::shadow_sub( $pack . '::' . $ctx->declarator, $_[0] );
+}
+
+sub inject_if_block {
+    my $ctx    = shift;
+    my $inject = shift;
+    $ctx->skipspace;
+    my $linestr = Devel::Declare::get_linestr;
+    if( substr( $linestr, $ctx->offset, 1 ) eq '{' ) {
+        substr( $linestr, $ctx->offset + 1, 0 ) = $inject;
+        Devel::Declare::set_linestr($linestr);
+    }
+}
+
+sub scope_injector_call {
+    return ' BEGIN { ' . __PACKAGE__ . '::inject_scope }; ';
+}
+
+sub inject_scope {
+    my $ctx = shift;
+    $^H |= 0x120000;
+    $^H{DD_METHODHANDLERS} = Scope::Guard->new(
+        sub {
+            my $linestr = Devel::Declare::get_linestr;
+            my $offset  = Devel::Declare::get_linestr_offset;
+            substr( $linestr, $offset, 0 ) = ';';
+            Devel::Declare::set_linestr($linestr);
+        }
+    );
+}
+
+1;
+