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1 file changed, 163 insertions
luneur.lua(file created)
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| 1 | + | local net, live = {}, {} | |
| 2 | + | ||
| 3 | + | local function neuron(name) | |
| 4 | + | if not net[name] then | |
| 5 | + | net[name] = { | |
| 6 | + | name = name, | |
| 7 | + | alive = false, sleep = false, | |
| 8 | + | arity = 0, saturation = 0, | |
| 9 | + | excite = {}, | |
| 10 | + | inhibit = {}, | |
| 11 | + | } | |
| 12 | + | end | |
| 13 | + | return net[name] | |
| 14 | + | end | |
| 15 | + | ||
| 16 | + | local function tokenize(program) | |
| 17 | + | local tokens, current_token = {}, {} | |
| 18 | + | for char in program:gmatch(".") do | |
| 19 | + | if char:match "%s" then | |
| 20 | + | current_token = {} | |
| 21 | + | elseif char:match "[:;.]" then | |
| 22 | + | current_token = {} | |
| 23 | + | table.insert(tokens, char) | |
| 24 | + | elseif char == "*" then | |
| 25 | + | if #current_token ~= 0 then | |
| 26 | + | table.insert(tokens, table.concat(current_token)) | |
| 27 | + | current_token = {} | |
| 28 | + | end | |
| 29 | + | else | |
| 30 | + | table.insert(current_token, char) | |
| 31 | + | end | |
| 32 | + | end | |
| 33 | + | return tokens | |
| 34 | + | end | |
| 35 | + | ||
| 36 | + | local function connect_neurons(lhs, rhs, inhibit) | |
| 37 | + | for _, left in ipairs(lhs) do | |
| 38 | + | for _, right in ipairs(rhs) do | |
| 39 | + | if inhibit then table.insert(left.inhibit, right) | |
| 40 | + | else table.insert(left.excite, right) | |
| 41 | + | end | |
| 42 | + | if not right.alive then | |
| 43 | + | right.arity, right.alive = #lhs, true | |
| 44 | + | end | |
| 45 | + | end | |
| 46 | + | end | |
| 47 | + | end | |
| 48 | + | ||
| 49 | + | local function parse(tokens) | |
| 50 | + | local is_right, inhibit, chaining = false, false, false | |
| 51 | + | local lhs, rhs = {}, {} | |
| 52 | + | for _, token in ipairs(tokens) do | |
| 53 | + | if token == ":" or token == ";" then | |
| 54 | + | is_right = not is_right | |
| 55 | + | if chaining then | |
| 56 | + | if is_right then | |
| 57 | + | connect_neurons(rhs, lhs, inhibit) ; rhs = {} | |
| 58 | + | else | |
| 59 | + | connect_neurons(lhs, rhs, inhibit) ; lhs = {} | |
| 60 | + | end | |
| 61 | + | end | |
| 62 | + | chaining = true | |
| 63 | + | inhibit = token == ";" | |
| 64 | + | elseif token == "." then | |
| 65 | + | if not chaining then | |
| 66 | + | for _, left in ipairs(lhs) do | |
| 67 | + | left.alive = true | |
| 68 | + | table.insert(live, left) | |
| 69 | + | end | |
| 70 | + | elseif is_right then | |
| 71 | + | connect_neurons(lhs, rhs, inhibit) | |
| 72 | + | else | |
| 73 | + | connect_neurons(rhs, lhs, inhibit) | |
| 74 | + | end | |
| 75 | + | lhs, rhs, is_right, inhibit, chaining = {}, {}, false, false, false | |
| 76 | + | elseif is_right then | |
| 77 | + | table.insert(rhs, neuron(token)) | |
| 78 | + | else | |
| 79 | + | table.insert(lhs, neuron(token)) | |
| 80 | + | end | |
| 81 | + | end | |
| 82 | + | return net | |
| 83 | + | end | |
| 84 | + | ||
| 85 | + | local function step(count) | |
| 86 | + | local excited, dirty = {}, {} | |
| 87 | + | -- io.write(("%02d "):format(count)) | |
| 88 | + | for _, neuron in ipairs(live) do | |
| 89 | + | -- io.write(("%s/%d "):format(neuron.name, neuron.arity)) | |
| 90 | + | if neuron.arity == 0 then | |
| 91 | + | table.insert(excited, neuron) | |
| 92 | + | end | |
| 93 | + | ||
| 94 | + | for _, inhibit_neuron in ipairs(neuron.inhibit) do | |
| 95 | + | inhibit_neuron.sleep = true | |
| 96 | + | table.insert(dirty, inhibit_neuron) | |
| 97 | + | end | |
| 98 | + | ||
| 99 | + | for _, excited_neuron in ipairs(neuron.excite) do | |
| 100 | + | excited_neuron.saturation = excited_neuron.saturation + 1 | |
| 101 | + | table.insert(dirty, excited_neuron) | |
| 102 | + | if excited_neuron.saturation == excited_neuron.arity then | |
| 103 | + | table.insert(excited, excited_neuron) | |
| 104 | + | end | |
| 105 | + | end | |
| 106 | + | end | |
| 107 | + | -- io.write("\n") | |
| 108 | + | live = {} | |
| 109 | + | for _, excited_neuron in ipairs(excited) do | |
| 110 | + | if not excited_neuron.sleep then | |
| 111 | + | table.insert(live, excited_neuron) | |
| 112 | + | if excited_neuron.hook then | |
| 113 | + | excited_neuron.hook(live) | |
| 114 | + | end | |
| 115 | + | end | |
| 116 | + | end | |
| 117 | + | ||
| 118 | + | for _, dirty_neuron in ipairs(dirty) do | |
| 119 | + | dirty_neuron.saturation = 0 | |
| 120 | + | dirty_neuron.sleep = false | |
| 121 | + | end | |
| 122 | + | ||
| 123 | + | return #live ~= 0 | |
| 124 | + | end | |
| 125 | + | ||
| 126 | + | parse(tokenize [[ | |
| 127 | + | init*; init*: signal*. | |
| 128 | + | ||
| 129 | + | The signal* will fire once: | |
| 130 | + | and activate the cat* program. | |
| 131 | + | ||
| 132 | + | cat* tiggers a: read* from standard io. | |
| 133 | + | ||
| 134 | + | no-input* prevents another; | |
| 135 | + | no-input* means the program is: | |
| 136 | + | done*. | |
| 137 | + | ||
| 138 | + | if there character-read*; | |
| 139 | + | consume the character-read* event: | |
| 140 | + | then write* to standard io. | |
| 141 | + | ||
| 142 | + | if there was a write*: then read*. | |
| 143 | + | ||
| 144 | + | init* my program. | |
| 145 | + | ]]) | |
| 146 | + | ||
| 147 | + | ||
| 148 | + | local char = nil | |
| 149 | + | net["read"].hook = function(live) | |
| 150 | + | char = io.read(1) | |
| 151 | + | if not char then | |
| 152 | + | table.insert(live, net["no-input"]) | |
| 153 | + | else | |
| 154 | + | table.insert(live, net["character-read"]) | |
| 155 | + | end | |
| 156 | + | end | |
| 157 | + | ||
| 158 | + | net["write"].hook = function(live) | |
| 159 | + | io.write(char) | |
| 160 | + | end | |
| 161 | + | ||
| 162 | + | local count = 0 | |
| 163 | + | while step(count) and count < 0x30 do count = count + 1 end | |
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