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annotate core/src/luan/modules/Io.luan @ 539:473e456444ff

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Remove object-oriented primitive methods for string and binary
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 01 Jun 2015 17:53:55 -0600
parents 92c3d22745b8
children 18504c41b0be
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1 java()
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2 local IoLuan = require "java:luan.modules.IoLuan"
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3 local System = require "java:java.lang.System"
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4
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5 local M = {}
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6
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7 M.read_console_line = IoLuan.read_console_line
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8 M.schemes = IoLuan.newSchemes()
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9 M.uri = IoLuan.uri
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10 M.stdin = IoLuan.defaultStdin.table()
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11 M.socket_server = IoLuan.socket_server
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12 M.stdout = IoLuan.textWriter(System.out)
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13 M.stderr = IoLuan.textWriter(System.err)
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15
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16 local Luan = require "luan:Luan"
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17 local to_string = Luan.to_string
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18 local type = Luan.type
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19 local try = Luan.try
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20 local ipairs = Luan.ipairs
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21 local pairs = Luan.pairs
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22 local values = Luan.values
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23 local Table = require "luan:Table"
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24 local unpack = Table.unpack
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25 local String = require "luan:String"
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26 local encode = String.encode
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27 local matches = String.matches
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28
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29
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30 function M.print_to(out,...)
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31 local list = {}
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32 for v in values(...) do
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33 list[#list+1] = to_string(v)
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34 list[#list+1] = '\t'
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35 end
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36 if #list == 0 then
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37 out.write( '\n' )
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38 else
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39 list[#list] = '\n'
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40 out.write( unpack(list) )
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41 end
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42 end
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43
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44 function M.print(...)
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45 M.print_to(M.stdout,...)
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46 end
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47
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48
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49 -- repr
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50
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51 local function do_repr(obj,done)
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52 local tp = type(obj)
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53 if tp == "table" then
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54 if done[obj] == true then
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55 %><circular reference><%
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56 return
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57 end
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58 done[obj] = true
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59 %>{<%
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60 local is_first = true
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61 local in_list = {}
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62 for key, value in ipairs(obj) do
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63 if is_first then is_first = false else %>, <% end
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64 do_repr(value,done)
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65 in_list[key] = true
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66 end
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67 for key, value in pairs(obj) do
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68 if in_list[key] ~= true then
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69 if is_first then is_first = false else %>, <% end
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70 if type(key) == "string" and matches(key,"[a-zA-Z_][a-zA-Z_0-9]*") ~= nil then
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71 %><%=key%><%
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72 elseif type(key) == "table" then
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73 %>[<<%=key%>>]<%
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74 else
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75 %>[<%do_repr(key,done)%>]<%
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76 end
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77 %>=<% do_repr(value,done)
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78 end
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79 end
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80 %>}<%
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81 elseif tp == "string" then
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82 %>"<%=encode(obj)%>"<%
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83 elseif tp == "nil" or tp == "boolean" or tp == "number" then
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84 %><%=obj%><%
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85 else
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86 %><<%=obj%>><%
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87 end
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88 end
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89
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90 local uri = M.uri -- make local
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91
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92 function M.repr(obj)
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93 local old_out = M.stdout
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94 return try {
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95 function()
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96 local string_uri = uri "string:"
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97 M.stdout = string_uri.text_writer()
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98 do_repr(obj,{})
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99 M.stdout.close()
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100 return string_uri.read_text()
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101 end;
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102 finally = function()
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103 M.stdout = old_out
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104 end;
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105 }
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106 end
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107
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108
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109 -- useful for SimplyHTML responsiveness
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110
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111 local NO = {}
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112 M.NO = NO
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113
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114 function M.dont_write_when_no(write_fn)
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115 return function(...)
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116 for v in values(...) do
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117 if v == NO then
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118 return
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119 end
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120 end
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121 write_fn(...)
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122 end
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123 end
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124
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125 return M