238 lines
8.5 KiB
Plaintext
238 lines
8.5 KiB
Plaintext
#..
|
|
This File contains actions for making actions and compile-time actions and some helper
|
|
functions to make that easier.
|
|
|
|
# Compile-time action to make compile-time actions:
|
|
immediately
|
|
lua> ".."
|
|
nomsu:define_compile_action("compile %actions to %lua", \(!! code location !!), function(tree, \%actions, \%lua)
|
|
local lua = Lua(tree.source, "nomsu:define_compile_action(");
|
|
local stubs = {};
|
|
for i, action in ipairs(\%actions.value) do
|
|
stubs[i] = action:get_stub(true);
|
|
end
|
|
stubs = repr(stubs);
|
|
if #stubs > 80 then
|
|
lua:append("\\n ",stubs,",\\n ");
|
|
else
|
|
lua:append(stubs,", ");
|
|
end
|
|
lua:append(repr(tree.source:get_line()), ", function(tree");
|
|
local args = {};
|
|
for i,tok in ipairs(\%actions.value[1].value) do
|
|
if tok.type == "Var" then args[#args+1] = nomsu:var_to_lua_identifier(tok.value); end
|
|
end
|
|
for i, arg in ipairs(args) do
|
|
lua:append(", ");
|
|
lua:append(arg);
|
|
end
|
|
local body_lua = \%lua:as_lua(nomsu);
|
|
body_lua:convert_to_statements("return ");
|
|
body_lua:remove_free_vars(unpack(args));
|
|
body_lua:declare_locals();
|
|
lua:append(")\\n ", body_lua, "\\nend);");
|
|
return lua;
|
|
end);
|
|
|
|
# Compile-time action to make actions
|
|
immediately
|
|
compile [action %actions %body] to
|
|
lua> ".."
|
|
local lua = Lua(tree.source, "nomsu:define_action(");
|
|
local stubs = {};
|
|
for i, action in ipairs(\%actions.value) do
|
|
stubs[i] = action:get_stub(true);
|
|
end
|
|
stubs = repr(stubs);
|
|
if #stubs > 80 then
|
|
lua:append("\\n ",stubs,",\\n ");
|
|
else
|
|
lua:append(stubs,", ");
|
|
end
|
|
lua:append(repr(tree.source:get_line()), ", function(");
|
|
local args = {};
|
|
for i,tok in ipairs(\%actions.value[1].value) do
|
|
if tok.type == "Var" then args[#args+1] = nomsu:var_to_lua_identifier(tok.value); end
|
|
end
|
|
for i, arg in ipairs(args) do
|
|
lua:append(arg);
|
|
if i < #args then lua:append(", ") end
|
|
end
|
|
local body_lua = \%body:as_lua(nomsu);
|
|
body_lua:convert_to_statements("return ");
|
|
body_lua:remove_free_vars(unpack(args));
|
|
body_lua:declare_locals();
|
|
lua:append(")\\n ", body_lua, "\\nend);")
|
|
return lua;
|
|
|
|
# Macro to make nomsu macros
|
|
immediately
|
|
compile [parse %shorthand as %longhand] to
|
|
lua> ".."
|
|
local lua = Lua(tree.source, "nomsu:define_compile_action(");
|
|
local stubs = {};
|
|
for i, action in ipairs(\%shorthand.value) do
|
|
stubs[i] = action:get_stub(true);
|
|
end
|
|
stubs = repr(stubs);
|
|
if #stubs > 80 then
|
|
lua:append("\\n ",stubs,",\\n ");
|
|
else
|
|
lua:append(stubs,", ");
|
|
end
|
|
lua:append(repr(tree.source:get_line()), ", function(tree");
|
|
local args = {};
|
|
for i,tok in ipairs(\%shorthand.value[1].value) do
|
|
if tok.type == "Var" then args[#args+1] = nomsu:var_to_lua_identifier(tok.value); end
|
|
end
|
|
for i, arg in ipairs(args) do
|
|
lua:append(", ");
|
|
lua:append(arg);
|
|
end
|
|
local template = repr(tostring(\%longhand:as_nomsu()));
|
|
local replacements = {};
|
|
for i, a in ipairs(args) do replacements[i] = a.."="..a; end
|
|
replacements = "{"..table.concat(replacements, ", ").."}";
|
|
lua:append([[)
|
|
local template = nomsu:parse(Nomsu(]]..repr(tree.source)..[[, ]]..template..[[));
|
|
local replacement = nomsu:tree_with_replaced_vars(template, ]]..replacements..[[);
|
|
return replacement:as_lua(nomsu);
|
|
end);]]);
|
|
return lua;
|
|
|
|
action [remove action %stub]
|
|
lua> ".."
|
|
local fn = ACTIONS[\%stub];
|
|
local metadata = nomsu.action_metadata[fn];
|
|
for i=#metadata.aliases,1,-1 do
|
|
metadata.arg_orders[metadata.aliases[i]] = nil;
|
|
table.remove(metadata.aliases, i);
|
|
end
|
|
ACTIONS[\%stub] = nil;
|
|
|
|
immediately
|
|
action [%tree as lua]
|
|
=lua "\%tree:as_lua(nomsu)"
|
|
|
|
action [%tree as lua expr]
|
|
lua> ".."
|
|
local lua = \%tree:as_lua(nomsu);
|
|
if not lua.is_value then
|
|
error("Invalid thing to convert to lua expr: "..\%tree.source:get_text());
|
|
end
|
|
return lua;
|
|
|
|
action [%tree as lua statements]
|
|
lua> ".."
|
|
local lua = \%tree:as_lua(nomsu);
|
|
lua:convert_to_statements();
|
|
return lua;
|
|
|
|
compile [declare locals in %tree] to
|
|
Lua "\(%tree as lua expr):declare_locals();"
|
|
|
|
compile [declare locals %locals in %tree] to
|
|
Lua "\(%tree as lua expr):declare_locals(\(%locals as lua expr));"
|
|
|
|
compile [remove free vars %vars from %tree] to
|
|
Lua "\(%tree as lua expr):remove_free_vars(unpack(\(%vars as lua expr)));"
|
|
|
|
action [%tree as value]
|
|
=lua "nomsu:tree_to_value(\%tree)"
|
|
|
|
|
|
action [%tree's stub]
|
|
=lua "nomsu:tree_to_stub(\%tree)"
|
|
|
|
immediately
|
|
parse [%var <-write %code] as: lua> "\%var:append(\%code);"
|
|
parse [to %var write %code] as: lua> "\%var:append(\%code);"
|
|
|
|
immediately
|
|
action [%tree's source code, %tree' source code]
|
|
=lua "\%tree.source:get_text()"
|
|
|
|
compile [repr %obj] to: Lua value "repr(\(%obj as lua expr))"
|
|
compile [%obj as text] to: Lua value "tostring(\(%obj as lua expr))"
|
|
compile [type of %obj] to: Lua value "type(\(%obj as lua expr))"
|
|
|
|
immediately
|
|
compile [nomsu] to: Lua value "nomsu"
|
|
compile [%var as lua identifier] to: Lua value "nomsu:var_to_lua_identifier(\(%var as lua expr))"
|
|
|
|
action [action %names metadata]
|
|
=lua "nomsu.action_metadata[ACTIONS[\%names]]"
|
|
|
|
# Get the source code for a function
|
|
action [help %action]
|
|
lua> ".."
|
|
local metadata = \(action %action metadata);
|
|
if not metadata then
|
|
print("Action not found: "..repr(\%action));
|
|
else
|
|
print(metadata.src or "<unknown source code>");
|
|
end
|
|
|
|
# Compiler tools
|
|
immediately
|
|
compile [run %code] to
|
|
Lua value "nomsu:run(Nomsu(\(=lua "tostring(tree.source)"), \(%code as lua expr)))"
|
|
parse [enable debugging] as: lua> "nomsu.debug = true;"
|
|
parse [disable debugging] as: lua> "nomsu.debug = false;"
|
|
|
|
immediately
|
|
compile [show lua %block] to
|
|
lua> ".."
|
|
local \%lua = \%block:as_lua(nomsu);
|
|
return Lua(\%block.source, "print(", repr(tostring(\%lua)), ");");
|
|
|
|
immediately
|
|
compile [say %message] to
|
|
lua> ".."
|
|
if \%message.type == "Text" then
|
|
return Lua(tree.source, "print(", \(%message as lua expr), ");");
|
|
else
|
|
return Lua(tree.source, "print(stringify(", \(%message as lua expr), "));");
|
|
end
|
|
|
|
immediately
|
|
compile [source] to: Lua value (=lua "tree.source") "tree.source"
|
|
|
|
#..
|
|
immediately
|
|
action [Lua %]: Lua (=lua "tree.source") %
|
|
action [Lua value %]: Lua value (=lua "tree.source") %
|
|
|
|
# Return
|
|
immediately
|
|
#.. Return statement is wrapped in a do..end block because Lua is unhappy if you
|
|
put code after a return statement, unless you wrap it in a block.
|
|
compile [return] to: Lua "do return; end"
|
|
compile [return %return_value] to: Lua "do return \(%return_value as lua expr); end"
|
|
|
|
# Error functions
|
|
immediately
|
|
compile [barf] to: Lua "error(nil, 0);"
|
|
compile [barf %msg] to: Lua "error(\(%msg as lua expr), 0);"
|
|
compile [assume %condition] to
|
|
lua> "local \%assumption = 'Assumption failed: '..tostring(\%condition.source:get_text());"
|
|
return
|
|
Lua ".."
|
|
if not \(%condition as lua expr) then
|
|
error(\(repr %assumption), 0);
|
|
end
|
|
|
|
# TODO: factor this out and replace with "unless %condition: barf %message"
|
|
compile [assume %condition or barf %message] to
|
|
Lua ".."
|
|
if not \(%condition as lua expr) then
|
|
error(\(%message as lua expr), 0);
|
|
end
|
|
|
|
# Literals
|
|
immediately
|
|
compile [yes] to: Lua value "true"
|
|
compile [no] to: Lua value "false"
|
|
compile [nothing, nil, null] to: Lua value "nil"
|
|
|