Execute HQ9+/Tcl: Difference between revisions
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Fixed syntax highlighting.
(Added an implementation in Tcl; see page for why this is interesting) |
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{{collection|RCHQ9+}}{{implementation|HQ9+}}[[
{{works with|Tcl|8.4}}
▲This implementation has the feature that if you feed itself in as the program, it prints itself out. So the implementation of a language with a quine operation is a quine in the language implemented. This feels rather appropriate...
<br clear=right>
===Interpreter===
<
for {set i [set a 0]} {$i<[string len $d]} {incr i} {
switc\u0068 -- [string index [string tolower $d] $i] \u0068 {
Line 17 ⟶ 19:
}
} \x2b {incr a}
}</
===Compiler===
To be fair, this compiler then immediately executes the code. Replace the <code>eval</code> with <code>puts</code> to see what it generates.
<syntaxhighlight lang="tcl">set d [read [expr {[set a $argc]?[open [lindex $argv [set a 0]]]:"stdin"}]]
eval [string map [list \u0068 {puts "\u0048ello, world!";} q \
[list puts -nonewline $d]\n \071 {for {set b [expr 100-1]} 1 {} {
puts "$b bottle[expr {$b-1?{s}:{}}] of beer on t\u0068e wall"
puts "$b bottle[expr {$b-1?{s}:{}}] of beer"
incr b -1
puts "take one down and pass it around"
puts "$b bottle[expr {$b-1?{s}:{}}] of beer on t\u0068e wall"
if {$b} {puts ""} else break
};} \x2b {incr a;}
] [regsub -all {[\u0000-*,-8:-gi-pr-\uffff]*} $d {}]]</syntaxhighlight>
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