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sile-typesetter / sile / 9275770472

28 May 2024 08:15PM UTC coverage: 73.034% (-1.7%) from 74.718%
9275770472

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Merge pull request #2003 from alerque/fix-breadcrumbs

1 of 5 new or added lines in 1 file covered. (20.0%)

261 existing lines in 14 files now uncovered.

11654 of 15957 relevant lines covered (73.03%)

7072.0 hits per line

Source File
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87.64
/core/length.lua
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local function _error_if_not_number (a)
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  if type(a) ~= "number" then
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    SU.error("We tried to do impossible arithmetic on a " .. SU.type(a) .. ". (That's a bug)", true)
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  end
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end
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return pl.class({
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    type = "length",
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    length = nil,
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    stretch = nil,
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    shrink = nil,
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    _init = function (self, spec, stretch, shrink)
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      if stretch or shrink then
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        self.length = SILE.measurement(spec or 0)
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        self.stretch = SILE.measurement(stretch or 0)
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        self.shrink = SILE.measurement(shrink or 0)
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      elseif type(spec) == "number" then
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        self.length = SILE.measurement(spec)
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      elseif SU.type(spec) == "measurement" then
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        self.length = spec
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      elseif SU.type(spec) == "glue" then
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        self.length = SILE.measurement(spec.width.length or 0)
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        self.stretch = SILE.measurement(spec.width.stretch or 0)
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        self.shrink = SILE.measurement(spec.width.shrink or 0)
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      elseif type(spec) == "table" then
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        self.length = SILE.measurement(spec.length or 0)
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        self.stretch = SILE.measurement(spec.stretch or 0)
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        self.shrink = SILE.measurement(spec.shrink or 0)
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      elseif type(spec) == "string" then
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        local amount = tonumber(spec)
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        if type(amount) == "number" then
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          self:_init(amount)
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        else
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          local parsed = SILE.parserBits.length:match(spec)
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          if not parsed then SU.error("Could not parse length '"..spec.."'") end
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          self:_init(parsed)
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        end
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      end
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      if not self.length then self.length = SILE.measurement() end
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      if not self.stretch then self.stretch = SILE.measurement() end
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      if not self.shrink then self.shrink = SILE.measurement() end
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    end,
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    absolute = function (self)
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      return SILE.length(self.length:tonumber(), self.stretch:tonumber(), self.shrink:tonumber())
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    end,
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    negate = function (self)
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      return self:__unm()
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    end,
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    tostring = function (self)
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      return self:__tostring()
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    end,
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    tonumber = function (self)
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      return self.length:tonumber()
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    end,
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    new = function (_)
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      SU.deprecated("SILE.length.new", "SILE.length", "0.10.0")
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    end,
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    make = function (_)
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      SU.deprecated("SILE.length.make", "SILE.length", "0.10.0")
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    end,
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    parse = function (_)
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      SU.deprecated("SILE.length.parse", "SILE.length", "0.10.0")
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    end,
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    fromLengthOrNumber = function (_, _)
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      SU.deprecated("SILE.length.fromLengthOrNumber", "SILE.length", "0.10.0")
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    end,
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    __index = function (_, key)
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      SU.deprecated("SILE.length." .. key, "SILE.length", "0.10.0")
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    end,
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    __tostring = function (self)
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      local str = tostring(self.length)
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      if self.stretch.amount ~= 0 then str = str .. " plus " .. tostring(self.stretch) end
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      if self.shrink.amount  ~= 0 then str = str .. " minus " .. tostring(self.shrink) end
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      return str
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    end,
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    __add = function (self, other)
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      if type(self) == "number" then self, other = other, self end
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      other = SU.cast("length", other)
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      return SILE.length(self.length + other.length,
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        self.stretch + other.stretch,
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        self.shrink + other.shrink)
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    end,
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    -- See usage comments on SILE.measurement:___add()
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    ___add = function (self, other)
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      if SU.type(other) ~= "length" then
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        self.length:___add(other)
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      else
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        self.length:___add(other.length)
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        self.stretch:___add(other.stretch)
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        self.shrink:___add(other.shrink)
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      end
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      return nil
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    end,
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    __sub = function (self, other)
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      local result = SILE.length(self)
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      other = SU.cast("length", other)
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      result.length = result.length - other.length
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      result.stretch = result.stretch - other.stretch
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      result.shrink = result.shrink - other.shrink
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      return result
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    end,
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    -- See usage comments on SILE.measurement:___add()
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    ___sub = function (self, other)
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      self.length:___sub(other.length)
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      self.stretch:___sub(other.stretch)
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      self.shrink:___sub(other.shrink)
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      return nil
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    end,
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    __mul = function (self, other)
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      if type(self) == "number" then self, other = other, self end
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      _error_if_not_number(other)
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      local result = SILE.length(self)
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      result.length = result.length * other
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      result.stretch = result.stretch * other
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      result.shrink = result.shrink * other
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      return result
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    end,
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    __div = function (self, other)
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      local result = SILE.length(self)
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      _error_if_not_number(other)
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      result.length = result.length / other
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      result.stretch = result.stretch / other
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      result.shrink = result.shrink / other
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      return result
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    end,
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    __unm = function (self)
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      local result = SILE.length(self)
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      result.length = result.length:__unm()
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      return result
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    end,
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    __lt = function (self, other)
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      local a = SU.cast("number", self)
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      local b = SU.cast("number", other)
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      return a - b < 0
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    end,
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    __le = function (self, other)
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      local a = SU.cast("number", self)
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      local b = SU.cast("number", other)
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      return a - b <= 0
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    end,
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    __eq = function (self, other)
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      local a = SU.cast("length", self)
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UNCOV
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      local b = SU.cast("length", other)
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UNCOV
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      return a.length == b.length and a.stretch == b.stretch and a.shrink == b.shrink
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    end
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  })
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