STDLIB_STR

Constant STDLIB_STR 

Source
pub const STDLIB_STR: &str = "{\n  local std = self,\n  local id = std.id,\n\n  # Those functions aren\'t normally located in stdlib\n  length:: $intrinsic(length),\n  type:: $intrinsic(type),\n  makeArray:: $intrinsic(makeArray),\n  codepoint:: $intrinsic(codepoint),\n  objectFieldsEx:: $intrinsic(objectFieldsEx),\n  objectHasEx:: $intrinsic(objectHasEx),\n  primitiveEquals:: $intrinsic(primitiveEquals),\n  modulo:: $intrinsic(modulo),\n  floor:: $intrinsic(floor),\n  ceil:: $intrinsic(ceil),\n  extVar:: $intrinsic(extVar),\n  native:: $intrinsic(native),\n  filter:: $intrinsic(filter),\n  char:: $intrinsic(char),\n  encodeUTF8:: $intrinsic(encodeUTF8),\n  decodeUTF8:: $intrinsic(decodeUTF8),\n  md5:: $intrinsic(md5),\n  trace:: $intrinsic(trace),\n  id:: $intrinsic(id),\n  parseJson:: $intrinsic(parseJson),\n\n  log:: $intrinsic(log),\n  pow:: $intrinsic(pow),\n  sqrt:: $intrinsic(sqrt),\n\n  sin:: $intrinsic(sin),\n  cos:: $intrinsic(cos),\n  tan:: $intrinsic(tan),\n  asin:: $intrinsic(asin),\n  acos:: $intrinsic(acos),\n  atan:: $intrinsic(atan),\n\n  exp:: $intrinsic(exp),\n  mantissa:: $intrinsic(mantissa),\n  exponent:: $intrinsic(exponent),\n\n  isString(v):: std.type(v) == \'string\',\n  isNumber(v):: std.type(v) == \'number\',\n  isBoolean(v):: std.type(v) == \'boolean\',\n  isObject(v):: std.type(v) == \'object\',\n  isArray(v):: std.type(v) == \'array\',\n  isFunction(v):: std.type(v) == \'function\',\n\n  toString(a)::\n    if std.type(a) == \'string\' then a else \'\' + a,\n\n  substr:: $intrinsic(substr),\n\n  startsWith(a, b)::\n    if std.length(a) < std.length(b) then\n      false\n    else\n      std.substr(a, 0, std.length(b)) == b,\n\n  endsWith(a, b)::\n    if std.length(a) < std.length(b) then\n      false\n    else\n      std.substr(a, std.length(a) - std.length(b), std.length(b)) == b,\n\n  lstripChars(str, chars)::\n    if std.length(str) > 0 && std.member(chars, str[0]) then\n      std.lstripChars(str[1:], chars)\n    else\n      str,\n\n  rstripChars(str, chars)::\n    local len = std.length(str);\n    if len > 0 && std.member(chars, str[len - 1]) then\n      std.rstripChars(str[:len - 1], chars)\n    else\n      str,\n\n  stripChars(str, chars)::\n    std.lstripChars(std.rstripChars(str, chars), chars),\n\n  stringChars(str)::\n    std.makeArray(std.length(str), function(i) str[i]),\n\n  local parse_nat(str, base) =\n    assert base > 0 && base <= 16 : \'integer base %d invalid\' % base;\n    // These codepoints are in ascending order:\n    local zero_code = std.codepoint(\'0\');\n    local upper_a_code = std.codepoint(\'A\');\n    local lower_a_code = std.codepoint(\'a\');\n    local addDigit(aggregate, char) =\n      local code = std.codepoint(char);\n      local digit = if code >= lower_a_code then\n        code - lower_a_code + 10\n      else if code >= upper_a_code then\n        code - upper_a_code + 10\n      else\n        code - zero_code;\n      assert digit >= 0 && digit < base : \'%s is not a base %d integer\' % [str, base];\n      base * aggregate + digit;\n    std.foldl(addDigit, std.stringChars(str), 0),\n\n  parseInt(str)::\n    assert std.isString(str) : \'Expected string, got \' + std.type(str);\n    assert std.length(str) > 0 && str != \'-\' : \'Not an integer: \"%s\"\' % [str];\n    if str[0] == \'-\' then\n      -parse_nat(str[1:], 10)\n    else\n      parse_nat(str, 10),\n\n  parseOctal(str)::\n    assert std.isString(str) : \'Expected string, got \' + std.type(str);\n    assert std.length(str) > 0 : \'Not an octal number: \"\"\';\n    parse_nat(str, 8),\n\n  parseHex(str)::\n    assert std.isString(str) : \'Expected string, got \' + std.type(str);\n    assert std.length(str) > 0 : \'Not hexadecimal: \"\"\';\n    parse_nat(str, 16),\n\n  split(str, c)::\n    assert std.isString(str) : \'std.split first parameter should be a string, got \' + std.type(str);\n    assert std.isString(c) : \'std.split second parameter should be a string, got \' + std.type(c);\n    assert std.length(c) == 1 : \'std.split second parameter should have length 1, got \' + std.length(c);\n    std.splitLimit(str, c, -1),\n\n  splitLimit:: $intrinsic(splitLimit),\n\n  strReplace:: $intrinsic(strReplace),\n\n  asciiUpper(str)::\n    local cp = std.codepoint;\n    local up_letter(c) = if cp(c) >= 97 && cp(c) < 123 then\n      std.char(cp(c) - 32)\n    else\n      c;\n    std.join(\'\', std.map(up_letter, std.stringChars(str))),\n\n  asciiLower(str)::\n    local cp = std.codepoint;\n    local down_letter(c) = if cp(c) >= 65 && cp(c) < 91 then\n      std.char(cp(c) + 32)\n    else\n      c;\n    std.join(\'\', std.map(down_letter, std.stringChars(str))),\n\n  range:: $intrinsic(range),\n\n  repeat(what, count)::\n    local joiner =\n      if std.isString(what) then \'\'\n      else if std.isArray(what) then []\n      else error \'std.repeat first argument must be an array or a string\';\n    std.join(joiner, std.makeArray(count, function(i) what)),\n\n  slice:: $intrinsic(slice),\n\n  member(arr, x)::\n    if std.isArray(arr) then\n      std.count(arr, x) > 0\n    else if std.isString(arr) then\n      std.length(std.findSubstr(x, arr)) > 0\n    else error \'std.member first argument must be an array or a string\',\n\n  count(arr, x):: std.length(std.filter(function(v) v == x, arr)),\n\n  mod:: $intrinsic(mod),\n\n  map:: $intrinsic(map),\n\n  mapWithIndex(func, arr)::\n    if !std.isFunction(func) then\n      error (\'std.mapWithIndex first param must be function, got \' + std.type(func))\n    else if !std.isArray(arr) && !std.isString(arr) then\n      error (\'std.mapWithIndex second param must be array, got \' + std.type(arr))\n    else\n      std.makeArray(std.length(arr), function(i) func(i, arr[i])),\n\n  mapWithKey(func, obj)::\n    if !std.isFunction(func) then\n      error (\'std.mapWithKey first param must be function, got \' + std.type(func))\n    else if !std.isObject(obj) then\n      error (\'std.mapWithKey second param must be object, got \' + std.type(obj))\n    else\n      { [k]: func(k, obj[k]) for k in std.objectFields(obj) },\n\n  flatMap:: $intrinsic(flatMap),\n\n  join:: $intrinsic(join),\n\n  lines(arr)::\n    std.join(\'\\n\', arr + [\'\']),\n\n  deepJoin(arr)::\n    if std.isString(arr) then\n      arr\n    else if std.isArray(arr) then\n      std.join(\'\', [std.deepJoin(x) for x in arr])\n    else\n      error \'Expected string or array, got %s\' % std.type(arr),\n\n\n  format:: $intrinsic(format),\n\n  foldr:: $intrinsic(foldr),\n\n  foldl:: $intrinsic(foldl),\n\n  filterMap(filter_func, map_func, arr)::\n    if !std.isFunction(filter_func) then\n      error (\'std.filterMap first param must be function, got \' + std.type(filter_func))\n    else if !std.isFunction(map_func) then\n      error (\'std.filterMap second param must be function, got \' + std.type(map_func))\n    else if !std.isArray(arr) then\n      error (\'std.filterMap third param must be array, got \' + std.type(arr))\n    else\n      std.map(map_func, std.filter(filter_func, arr)),\n\n  assertEqual(a, b)::\n    if a == b then\n      true\n    else\n      error \'Assertion failed. \' + a + \' != \' + b,\n\n  abs(n)::\n    if !std.isNumber(n) then\n      error \'std.abs expected number, got \' + std.type(n)\n    else\n      if n > 0 then n else -n,\n\n  sign(n)::\n    if !std.isNumber(n) then\n      error \'std.sign expected number, got \' + std.type(n)\n    else\n      if n > 0 then\n        1\n      else if n < 0 then\n        -1\n      else 0,\n\n  max(a, b)::\n    if !std.isNumber(a) then\n      error \'std.max first param expected number, got \' + std.type(a)\n    else if !std.isNumber(b) then\n      error \'std.max second param expected number, got \' + std.type(b)\n    else\n      if a > b then a else b,\n\n  min(a, b)::\n    if !std.isNumber(a) then\n      error \'std.min first param expected number, got \' + std.type(a)\n    else if !std.isNumber(b) then\n      error \'std.min second param expected number, got \' + std.type(b)\n    else\n      if a < b then a else b,\n\n  clamp(x, minVal, maxVal)::\n    if x < minVal then minVal\n    else if x > maxVal then maxVal\n    else x,\n\n  flattenArrays(arrs)::\n    std.foldl(function(a, b) a + b, arrs, []),\n\n  manifestIni(ini)::\n    local body_lines(body) =\n      std.join([], [\n        local value_or_values = body[k];\n        if std.isArray(value_or_values) then\n          [\'%s = %s\' % [k, value] for value in value_or_values]\n        else\n          [\'%s = %s\' % [k, value_or_values]]\n\n        for k in std.objectFields(body)\n      ]);\n\n    local section_lines(sname, sbody) = [\'[%s]\' % [sname]] + body_lines(sbody),\n          main_body = if std.objectHas(ini, \'main\') then body_lines(ini.main) else [],\n          all_sections = [\n      section_lines(k, ini.sections[k])\n      for k in std.objectFields(ini.sections)\n    ];\n    std.join(\'\\n\', main_body + std.flattenArrays(all_sections) + [\'\']),\n\n  manifestToml(value):: std.manifestTomlEx(value, \'  \'),\n\n  manifestTomlEx(value, indent)::\n    local\n      escapeStringToml = std.escapeStringJson,\n      escapeKeyToml(key) =\n        local bare_allowed = std.set(std.stringChars(\'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-\'));\n        if std.setUnion(std.set(std.stringChars(key)), bare_allowed) == bare_allowed then key else escapeStringToml(key),\n      isTableArray(v) = std.isArray(v) && std.length(v) > 0 && std.foldl(function(a, b) a && std.isObject(b), v, true),\n      isSection(v) = std.isObject(v) || isTableArray(v),\n      renderValue(v, indexedPath, inline, cindent) =\n        if v == true then\n          \'true\'\n        else if v == false then\n          \'false\'\n        else if v == null then\n          error \'Tried to manifest \"null\" at \' + indexedPath\n        else if std.isNumber(v) then\n          \'\' + v\n        else if std.isString(v) then\n          escapeStringToml(v)\n        else if std.isFunction(v) then\n          error \'Tried to manifest function at \' + indexedPath\n        else if std.isArray(v) then\n          if std.length(v) == 0 then\n            \'[]\'\n          else\n            local range = std.range(0, std.length(v) - 1);\n            local new_indent = if inline then \'\' else cindent + indent;\n            local separator = if inline then \' \' else \'\\n\';\n            local lines = [\'[\' + separator]\n                          + std.join([\',\' + separator],\n                                     [\n                                       [new_indent + renderValue(v[i], indexedPath + [i], true, \'\')]\n                                       for i in range\n                                     ])\n                          + [separator + (if inline then \'\' else cindent) + \']\'];\n            std.join(\'\', lines)\n        else if std.isObject(v) then\n          local lines = [\'{ \']\n                        + std.join([\', \'],\n                                   [\n                                     [escapeKeyToml(k) + \' = \' + renderValue(v[k], indexedPath + [k], true, \'\')]\n                                     for k in std.objectFields(v)\n                                   ])\n                        + [\' }\'];\n          std.join(\'\', lines),\n      renderTableInternal(v, path, indexedPath, cindent) =\n        local kvp = std.flattenArrays([\n          [cindent + escapeKeyToml(k) + \' = \' + renderValue(v[k], indexedPath + [k], false, cindent)]\n          for k in std.objectFields(v)\n          if !isSection(v[k])\n        ]);\n        local sections = [std.join(\'\\n\', kvp)] + [\n          (\n            if std.isObject(v[k]) then\n              renderTable(v[k], path + [k], indexedPath + [k], cindent)\n            else\n              renderTableArray(v[k], path + [k], indexedPath + [k], cindent)\n          )\n          for k in std.objectFields(v)\n          if isSection(v[k])\n        ];\n        std.join(\'\\n\\n\', sections),\n      renderTable(v, path, indexedPath, cindent) =\n        cindent + \'[\' + std.join(\'.\', std.map(escapeKeyToml, path)) + \']\'\n        + (if v == {} then \'\' else \'\\n\')\n        + renderTableInternal(v, path, indexedPath, cindent + indent),\n      renderTableArray(v, path, indexedPath, cindent) =\n        local range = std.range(0, std.length(v) - 1);\n        local sections = [\n          (cindent + \'[[\' + std.join(\'.\', std.map(escapeKeyToml, path)) + \']]\'\n           + (if v[i] == {} then \'\' else \'\\n\')\n           + renderTableInternal(v[i], path, indexedPath + [i], cindent + indent))\n          for i in range\n        ];\n        std.join(\'\\n\\n\', sections);\n    if std.isObject(value) then\n      renderTableInternal(value, [], [], \'\')\n    else\n      error \'TOML body must be an object. Got \' + std.type(value),\n\n  escapeStringJson:: $intrinsic(escapeStringJson),\n\n  escapeStringPython(str)::\n    std.escapeStringJson(str),\n\n  escapeStringBash(str_)::\n    local str = std.toString(str_);\n    local trans(ch) =\n      if ch == \"\'\" then\n        \"\'\\\"\'\\\"\'\"\n      else\n        ch;\n    \"\'%s\'\" % std.join(\'\', [trans(ch) for ch in std.stringChars(str)]),\n\n  escapeStringDollars(str_)::\n    local str = std.toString(str_);\n    local trans(ch) =\n      if ch == \'$\' then\n        \'$$\'\n      else\n        ch;\n    std.foldl(function(a, b) a + trans(b), std.stringChars(str), \'\'),\n\n  manifestJson(value):: std.manifestJsonEx(value, \'    \'),\n\n  manifestJsonEx:: $intrinsic(manifestJsonEx),\n\n  manifestYamlDoc(value, indent_array_in_object=false)::\n    local aux(v, path, cindent) =\n      if v == true then\n        \'true\'\n      else if v == false then\n        \'false\'\n      else if v == null then\n        \'null\'\n      else if std.isNumber(v) then\n        \'\' + v\n      else if std.isString(v) then\n        local len = std.length(v);\n        if len == 0 then\n          \'\"\"\'\n        else if v[len - 1] == \'\\n\' then\n          local split = std.split(v, \'\\n\');\n          std.join(\'\\n\' + cindent + \'  \', [\'|\'] + split[0:std.length(split) - 1])\n        else\n          std.escapeStringJson(v)\n      else if std.isFunction(v) then\n        error \'Tried to manifest function at \' + path\n      else if std.isArray(v) then\n        if std.length(v) == 0 then\n          \'[]\'\n        else\n          local params(value) =\n            if std.isArray(value) && std.length(value) > 0 then {\n              // While we could avoid the new line, it yields YAML that is\n              // hard to read, e.g.:\n              // - - - 1\n              //     - 2\n              //   - - 3\n              //     - 4\n              new_indent: cindent + \'  \',\n              space: \'\\n\' + self.new_indent,\n            } else if std.isObject(value) && std.length(value) > 0 then {\n              new_indent: cindent + \'  \',\n              // In this case we can start on the same line as the - because the indentation\n              // matches up then.  The converse is not true, because fields are not always\n              // 1 character long.\n              space: \' \',\n            } else {\n              // In this case, new_indent is only used in the case of multi-line strings.\n              new_indent: cindent,\n              space: \' \',\n            };\n          local range = std.range(0, std.length(v) - 1);\n          local parts = [\n            \'-\' + param.space + aux(v[i], path + [i], param.new_indent)\n            for i in range\n            for param in [params(v[i])]\n          ];\n          std.join(\'\\n\' + cindent, parts)\n      else if std.isObject(v) then\n        if std.length(v) == 0 then\n          \'{}\'\n        else\n          local params(value) =\n            if std.isArray(value) && std.length(value) > 0 then {\n              // Not indenting allows e.g.\n              // ports:\n              // - 80\n              // instead of\n              // ports:\n              //   - 80\n              new_indent: if indent_array_in_object then cindent + \'  \' else cindent,\n              space: \'\\n\' + self.new_indent,\n            } else if std.isObject(value) && std.length(value) > 0 then {\n              new_indent: cindent + \'  \',\n              space: \'\\n\' + self.new_indent,\n            } else {\n              // In this case, new_indent is only used in the case of multi-line strings.\n              new_indent: cindent,\n              space: \' \',\n            };\n          local lines = [\n            std.escapeStringJson(k) + \':\' + param.space + aux(v[k], path + [k], param.new_indent)\n            for k in std.objectFields(v)\n            for param in [params(v[k])]\n          ];\n          std.join(\'\\n\' + cindent, lines);\n    aux(value, [], \'\'),\n\n  manifestYamlStream(value, indent_array_in_object=false, c_document_end=true)::\n    if !std.isArray(value) then\n      error \'manifestYamlStream only takes arrays, got \' + std.type(value)\n    else\n      \'---\\n\' + std.join(\n        \'\\n---\\n\', [std.manifestYamlDoc(e, indent_array_in_object) for e in value]\n      ) + if c_document_end then \'\\n...\\n\' else \'\\n\',\n\n\n  manifestPython(v)::\n    if std.isObject(v) then\n      local fields = [\n        \'%s: %s\' % [std.escapeStringPython(k), std.manifestPython(v[k])]\n        for k in std.objectFields(v)\n      ];\n      \'{%s}\' % [std.join(\', \', fields)]\n    else if std.isArray(v) then\n      \'[%s]\' % [std.join(\', \', [std.manifestPython(v2) for v2 in v])]\n    else if std.isString(v) then\n      \'%s\' % [std.escapeStringPython(v)]\n    else if std.isFunction(v) then\n      error \'cannot manifest function\'\n    else if std.isNumber(v) then\n      std.toString(v)\n    else if v == true then\n      \'True\'\n    else if v == false then\n      \'False\'\n    else if v == null then\n      \'None\',\n\n  manifestPythonVars(conf)::\n    local vars = [\'%s = %s\' % [k, std.manifestPython(conf[k])] for k in std.objectFields(conf)];\n    std.join(\'\\n\', vars + [\'\']),\n\n  manifestXmlJsonml(value)::\n    if !std.isArray(value) then\n      error \'Expected a JSONML value (an array), got %s\' % std.type(value)\n    else\n      local aux(v) =\n        if std.isString(v) then\n          v\n        else\n          local tag = v[0];\n          local has_attrs = std.length(v) > 1 && std.isObject(v[1]);\n          local attrs = if has_attrs then v[1] else {};\n          local children = if has_attrs then v[2:] else v[1:];\n          local attrs_str =\n            std.join(\'\', [\' %s=\"%s\"\' % [k, attrs[k]] for k in std.objectFields(attrs)]);\n          std.deepJoin([\'<\', tag, attrs_str, \'>\', [aux(x) for x in children], \'</\', tag, \'>\']);\n\n      aux(value),\n\n  local base64_table = \'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\',\n  local base64_inv = { [base64_table[i]]: i for i in std.range(0, 63) },\n\n  base64:: $intrinsic(base64),\n\n  base64DecodeBytes:: $intrinsic(base64DecodeBytes),\n\n  base64Decode:: $intrinsic(base64Decode),\n\n  reverse:: $intrinsic(reverse),\n\n  sortImpl:: $intrinsic(sortImpl),\n\n  sort(arr, keyF=id)::\n    std.sortImpl(arr, keyF),\n\n  uniq(arr, keyF=id)::\n    local f(a, b) =\n      if std.length(a) == 0 then\n        [b]\n      else if keyF(a[std.length(a) - 1]) == keyF(b) then\n        a\n      else\n        a + [b];\n    std.foldl(f, arr, []),\n\n  set(arr, keyF=id)::\n    std.uniq(std.sort(arr, keyF), keyF),\n\n  setMember(x, arr, keyF=id)::\n    // TODO(dcunnin): Binary chop for O(log n) complexity\n    std.length(std.setInter([x], arr, keyF)) > 0,\n\n  setUnion(a, b, keyF=id)::\n    // NOTE: order matters, values in `a` win\n    local aux(a, b, i, j, acc) =\n      if i >= std.length(a) then\n        acc + b[j:]\n      else if j >= std.length(b) then\n        acc + a[i:]\n      else\n        local ak = keyF(a[i]);\n        local bk = keyF(b[j]);\n        if ak == bk then\n          aux(a, b, i + 1, j + 1, acc + [a[i]]) tailstrict\n        else if ak < bk then\n          aux(a, b, i + 1, j, acc + [a[i]]) tailstrict\n        else\n          aux(a, b, i, j + 1, acc + [b[j]]) tailstrict;\n    aux(a, b, 0, 0, []),\n\n  setInter(a, b, keyF=id)::\n    local aux(a, b, i, j, acc) =\n      if i >= std.length(a) || j >= std.length(b) then\n        acc\n      else\n        if keyF(a[i]) == keyF(b[j]) then\n          aux(a, b, i + 1, j + 1, acc + [a[i]]) tailstrict\n        else if keyF(a[i]) < keyF(b[j]) then\n          aux(a, b, i + 1, j, acc) tailstrict\n        else\n          aux(a, b, i, j + 1, acc) tailstrict;\n    aux(a, b, 0, 0, []) tailstrict,\n\n  setDiff(a, b, keyF=id)::\n    local aux(a, b, i, j, acc) =\n      if i >= std.length(a) then\n        acc\n      else if j >= std.length(b) then\n        acc + a[i:]\n      else\n        if keyF(a[i]) == keyF(b[j]) then\n          aux(a, b, i + 1, j + 1, acc) tailstrict\n        else if keyF(a[i]) < keyF(b[j]) then\n          aux(a, b, i + 1, j, acc + [a[i]]) tailstrict\n        else\n          aux(a, b, i, j + 1, acc) tailstrict;\n    aux(a, b, 0, 0, []) tailstrict,\n\n  mergePatch(target, patch)::\n    if std.isObject(patch) then\n      local target_object =\n        if std.isObject(target) then target else {};\n\n      local target_fields =\n        if std.isObject(target_object) then std.objectFields(target_object) else [];\n\n      local null_fields = [k for k in std.objectFields(patch) if patch[k] == null];\n      local both_fields = std.setUnion(target_fields, std.objectFields(patch));\n\n      {\n        [k]:\n          if !std.objectHas(patch, k) then\n            target_object[k]\n          else if !std.objectHas(target_object, k) then\n            std.mergePatch(null, patch[k]) tailstrict\n          else\n            std.mergePatch(target_object[k], patch[k]) tailstrict\n        for k in std.setDiff(both_fields, null_fields)\n      }\n    else\n      patch,\n\n  objectFields(o)::\n    std.objectFieldsEx(o, false),\n\n  objectFieldsAll(o)::\n    std.objectFieldsEx(o, true),\n\n  objectHas(o, f)::\n    std.objectHasEx(o, f, false),\n\n  objectHasAll(o, f)::\n    std.objectHasEx(o, f, true),\n\n  objectValues(o)::\n    [o[k] for k in std.objectFields(o)],\n\n  objectValuesAll(o)::\n    [o[k] for k in std.objectFieldsAll(o)],\n\n  equals:: $intrinsic(equals),\n\n  resolvePath(f, r)::\n    local arr = std.split(f, \'/\');\n    std.join(\'/\', std.makeArray(std.length(arr) - 1, function(i) arr[i]) + [r]),\n\n  prune(a)::\n    local isContent(b) =\n      if b == null then\n        false\n      else if std.isArray(b) then\n        std.length(b) > 0\n      else if std.isObject(b) then\n        std.length(b) > 0\n      else\n        true;\n    if std.isArray(a) then\n      [std.prune(x) for x in a if isContent($.prune(x))]\n    else if std.isObject(a) then {\n      [x]: $.prune(a[x])\n      for x in std.objectFields(a)\n      if isContent(std.prune(a[x]))\n    } else\n      a,\n\n  findSubstr(pat, str)::\n    if !std.isString(pat) then\n      error \'findSubstr first parameter should be a string, got \' + std.type(pat)\n    else if !std.isString(str) then\n      error \'findSubstr second parameter should be a string, got \' + std.type(str)\n    else\n      local pat_len = std.length(pat);\n      local str_len = std.length(str);\n      if pat_len == 0 || str_len == 0 || pat_len > str_len then\n        []\n      else\n        std.filter(function(i) str[i:i + pat_len] == pat, std.range(0, str_len - pat_len)),\n\n  find(value, arr)::\n    if !std.isArray(arr) then\n      error \'find second parameter should be an array, got \' + std.type(arr)\n    else\n      std.filter(function(i) arr[i] == value, std.range(0, std.length(arr) - 1)),\n}\n";