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= Yapsi -- Yet Another Perl Six Implementation This is an implementation of a Perl 6 compiler-and-runtime in Perl 6. It currently runs off the old, pre-refactor branch of Rakudo known as 'alpha'. Right now you can do things like this: $ ./yapsi -e 'say 42' 42 $ ./yapsi -e 'my $a = 5; say $a' 5 $ ./yapsi -e 'my $a = 5; my $b := $a; $b = 42; say $a' 42 In other words, Yapsi currently handles declaration, assignment, binding, and a very basic 'say' instruction. The compiler also detects use-before-declaration and syntax errors. $ ./yapsi -e '$a; my $a' Invalid. $a not declared before use $ ./yapsi -e 'say say' Could not parse == Near-future directions Things we hope to implement in the immediate future: * Blocks * If statements * Loops * Function calls == Raison d'etre Besides being useful as a p6-in-p6 implementation, Yapsi also might work as a fast vehicle for exploring the following underexplored areas of the Perl 6 spec: * Phasers * Constant folding * Early catching of errors * Increased communication between compiler and runtime == License Yapsi is released under Artistic 2.0. See LICENSE.