Added comments.
This commit is contained in:
Bruce Hill
parent
e8f2b4fdd2
commit
d218dcbd42
24
core.moon
24
core.moon
@ -39,17 +39,24 @@ g = PermissionNomic()
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g\defmacro [[lua %lua_code]], (vars,helpers,ftype)=>
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with helpers
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lua_code = vars.lua_code.value
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as_lua_code = (str)->
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switch str.type
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when "String"
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escapes = n:"\n", t:"\t", b:"\b", a:"\a", v:"\v", f:"\f", r:"\r"
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unescape = (s)-> s\gsub("\\(.)", ((c)-> escapes[c] or c))
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unescaped = str.value\gsub("\\(.)", ((c)-> escapes[c] or c))
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return unescaped
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when "Longstring"
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result = [line for line in str.value\gmatch("[ \t]*|([^\n]*)")]
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return table.concat(result, "\n")
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else
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return str.value
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switch lua_code.type
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when "List"
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-- TODO: handle subexpressions
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.lua table.concat[unescape(i.value.value) for i in *lua_code.value]
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when "String"
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.lua(unescape(lua_code.value))
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when "Longstring"
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.lua(lua_code.value)
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else error("Unknown type: #{lua_code.type}")
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.lua table.concat[as_lua_code(i.value) for i in *lua_code.value]
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else .lua(as_lua_code(lua_code))
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return nil
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g\def {"restrict %fn to %whitelist"}, (vars)=>
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@ -106,6 +113,9 @@ g\def [[printf %str]], (args)=>
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for s in *args.str do io.write(utils.repr(s))
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io.write("\n")
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g\def [[concat %strs]], (vars)=>
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return table.concat([utils.repr(s) for s in *vars.strs], "")
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g\def [[quote %str]], (vars)=>
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return utils.repr(vars.str, true)
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61
nomic.moon
61
nomic.moon
@ -5,15 +5,17 @@ utils = require 'utils'
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moon = require 'moon'
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-- TODO:
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-- Comments
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-- string interpolation
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lpeg.setmaxstack 10000 -- whoa
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{:P,:V,:S,:Cg,:C,:Cp,:B,:Cmt} = lpeg
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wordchar = P(1)-S(' \t\n\r%:;,.{}[]()"')
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spaces = S(" \t")^1
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comment = re.compile [[comment <- "(#" (comment / ((! "#)") .))* "#)"]]
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whitespace = (S(" \t") + comment)^1
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nl = P("\n")
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blank_line = spaces^-1 * nl
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blank_line = whitespace^-1 * nl
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get_line_indentation = (line)->
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indent_amounts = {[" "]:1, ["\t"]:4}
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@ -42,13 +44,12 @@ make_parser = (lingo, extra_definitions)->
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return end_pos
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defs =
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:wordchar, :nl, :spaces
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ws: S(" \t")^1
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:wordchar, :nl, ws:whitespace, :comment
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eol: #nl + (P("")-P(1))
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word_boundary: S(" \t")^1 + B(P("..")) + B(S("\";)]")) + #S("\":([") + #P("..")
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indent: #(nl * blank_line^0 * Cmt(spaces^-1, check_indent))
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dedent: #(nl * blank_line^0 * Cmt(spaces^-1, check_dedent))
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new_line: nl * blank_line^0 * Cmt(spaces^-1, check_nodent)
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word_boundary: S(" \t")^1 + B(P("..")) + B(S("\";)]")) + #S("\":([") + #P("..") + #P("/*")
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indent: #(nl * blank_line^0 * Cmt(whitespace^-1, check_indent))
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dedent: #(nl * blank_line^0 * Cmt(whitespace^-1, check_dedent))
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new_line: nl * blank_line^0 * Cmt(whitespace^-1, check_nodent)
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error_handler: (src,pos,errors)->
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line_no = 1
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for _ in src\sub(1,-#errors)\gmatch("\n") do line_no += 1
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@ -63,15 +64,14 @@ make_parser = (lingo, extra_definitions)->
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prev_line,err_line,next_line = src\match("([^\n]*)\n([^\n]*)\n([^\n]*)", start_of_prev_line+1)
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pointer = ("-")\rep(err_pos - start_of_err_line + 1) .. "^"
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error("\nParse error on line #{line_no}:\n|#{prev_line}\n|#{err_line}\n#{pointer}\n|#{next_line}")
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pointer = ("-")\rep(err_pos - start_of_err_line + 0) .. "^"
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error("\nParse error on line #{line_no}:\n\n#{prev_line}\n#{err_line}\n#{pointer}\n#{next_line}\n")
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if extra_definitions
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for k,v in pairs(extra_definitions) do defs[k] = v
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setmetatable(defs, {
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__index: (t,key)->
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--print("WORKING for #{key}")
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fn = (src, value, errors)->
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token = {type: key, :src, :value, :errors}
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return token
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@ -106,19 +106,13 @@ class Game
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invocations = {}
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local arg_names
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for _text in *text
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name_bits = {}
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_arg_names = {}
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for chunk in _text\gmatch("%S+")
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if chunk\sub(1,1) == "%"
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table.insert name_bits, "%"
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table.insert _arg_names, chunk\sub(2,-1)
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else
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table.insert name_bits, chunk
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invocation = table.concat name_bits, " "
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invocation = _text\gsub("%%%S+","%%")
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_arg_names = [arg for arg in _text\gmatch("%%(%S+)")]
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table.insert(invocations, invocation)
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if arg_names and not utils.equivalent(utils.set(arg_names), utils.set(_arg_names))
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if arg_names
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if not utils.equivalent(utils.set(arg_names), utils.set(_arg_names))
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error("Conflicting argument names #{utils.repr(arg_names)} and #{utils.repr(_arg_names)} for #{utils.repr(text)}")
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arg_names = _arg_names
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else arg_names = _arg_names
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return invocations, arg_names
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defmacro: (spec, fn)=>
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@ -131,12 +125,12 @@ class Game
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simplemacro: (spec, replacement)=>
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spec = spec\gsub("\r", "")
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replacement = replacement\gsub("\r", "")
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replace_grammar = [[
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replace_grammar = [=[
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stuff <- {~ (var / longstring / string / .)+ ~}
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var <- ("%" {%wordchar+}) -> replacer
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string <- '"' (("\" .) / [^"])* '"'
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longstring <- ('"..' %indent %nl {(!%dedent .)*} %new_line '.."')
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]]
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longstring <- ('".."' %ws? %indent {(%new_line "|" [^%nl]*)+} %dedent (%new_line '..')?)
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]=]
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fn = (vars, helpers, ftype)=>
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replacer = (varname)->
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ret = vars[varname].src
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@ -153,12 +147,10 @@ class Game
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run: (text)=>
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if @debug
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print("RUNNING TEXT:\n")
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print(text)
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print "RUNNING TEXT:\n#{text}"
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code = self\compile(text)
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if @debug
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print("\nGENERATED LUA CODE:")
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print(code)
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print "\nGENERATED LUA CODE:\n#{code}"
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lua_thunk, err = loadstring(code)
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if not lua_thunk
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error("Failed to compile generated code:\n#{code}\n\n#{err}")
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@ -209,12 +201,12 @@ class Game
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expression <- ({ (longstring / string / number / variable / list / thunk / subexpression) }) -> Expression
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string <- ({ (!('"..' %ws? %nl)) '"' {(("\" .) / [^"])*} '"' }) -> String
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longstring <- ({ '"..' %ws? %indent %nl {(!%dedent .)* (%nl %ws? %eol)*} ((%new_line '.."') / errors) }) -> Longstring
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longstring <- ({ '".."' %ws? %indent {(%new_line "|" [^%nl]*)+} ((%dedent (%new_line '..')?) / errors) }) -> Longstring
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number <- ({ {'-'? [0-9]+ ("." [0-9]+)?} }) -> Number
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variable <- ({ ("%" {%wordchar+}) }) -> Var
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subexpression <-
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("(" %ws? (functioncall / expression) %ws? ")")
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(!%comment "(" %ws? (functioncall / expression) %ws? ")")
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/ ("(..)" %ws? %indent %new_line ((({ {| indented_fn_bits |} }) -> FunctionCall) / expression) %dedent (%new_line "..")?)
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list <- ({ {|
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@ -337,12 +329,7 @@ class Game
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lua utils.repr(unescaped, true)
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when "Longstring"
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first_nonblank_line = tree.value\match("[^\n]+")
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indent = first_nonblank_line\match("[ \t]*")
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result = {}
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for line in (tree.value.."\n")\gmatch("(.-)\n")
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line = line\gsub("^"..indent, "", 1)
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table.insert result, line
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result = [line for line in tree.value\gmatch("[ \t]*|([^\n]*)")]
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lua utils.repr(table.concat(result, "\n"), true)
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when "Number"
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