1 | # $Id$
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2 |
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3 | # This class implements a pretty printing algorithm. It finds line breaks and
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4 | # nice indentations for grouped structure.
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5 | #
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6 | # By default, the class assumes that primitive elements are strings and each
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7 | # byte in the strings have single column in width. But it can be used for
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8 | # other situations by giving suitable arguments for some methods:
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9 | # * newline object and space generation block for PrettyPrint.new
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10 | # * optional width argument for PrettyPrint#text
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11 | # * PrettyPrint#breakable
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12 | #
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13 | # There are several candidate uses:
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14 | # * text formatting using proportional fonts
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15 | # * multibyte characters which has columns different to number of bytes
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16 | # * non-string formatting
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17 | #
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18 | # == Bugs
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19 | # * Box based formatting?
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20 | # * Other (better) model/algorithm?
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21 | #
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22 | # == References
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23 | # Christian Lindig, Strictly Pretty, March 2000,
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24 | # http://www.st.cs.uni-sb.de/~lindig/papers/#pretty
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25 | #
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26 | # Philip Wadler, A prettier printer, March 1998,
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27 | # http://homepages.inf.ed.ac.uk/wadler/topics/language-design.html#prettier
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28 | #
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29 | # == Author
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30 | # Tanaka Akira <[email protected]>
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31 | #
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32 | class PrettyPrint
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33 |
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34 | # This is a convenience method which is same as follows:
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35 | #
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36 | # begin
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37 | # q = PrettyPrint.new(output, maxwidth, newline, &genspace)
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38 | # ...
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39 | # q.flush
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40 | # output
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41 | # end
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42 | #
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43 | def PrettyPrint.format(output='', maxwidth=79, newline="\n", genspace=lambda {|n| ' ' * n})
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44 | q = PrettyPrint.new(output, maxwidth, newline, &genspace)
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45 | yield q
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46 | q.flush
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47 | output
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48 | end
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49 |
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50 | # This is similar to PrettyPrint::format but the result has no breaks.
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51 | #
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52 | # +maxwidth+, +newline+ and +genspace+ are ignored.
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53 | #
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54 | # The invocation of +breakable+ in the block doesn't break a line and is
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55 | # treated as just an invocation of +text+.
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56 | #
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57 | def PrettyPrint.singleline_format(output='', maxwidth=nil, newline=nil, genspace=nil)
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58 | q = SingleLine.new(output)
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59 | yield q
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60 | output
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61 | end
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62 |
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63 | # Creates a buffer for pretty printing.
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64 | #
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65 | # +output+ is an output target. If it is not specified, '' is assumed. It
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66 | # should have a << method which accepts the first argument +obj+ of
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67 | # PrettyPrint#text, the first argument +sep+ of PrettyPrint#breakable, the
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68 | # first argument +newline+ of PrettyPrint.new, and the result of a given
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69 | # block for PrettyPrint.new.
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70 | #
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71 | # +maxwidth+ specifies maximum line length. If it is not specified, 79 is
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72 | # assumed. However actual outputs may overflow +maxwidth+ if long
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73 | # non-breakable texts are provided.
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74 | #
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75 | # +newline+ is used for line breaks. "\n" is used if it is not specified.
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76 | #
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77 | # The block is used to generate spaces. {|width| ' ' * width} is used if it
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78 | # is not given.
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79 | #
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80 | def initialize(output='', maxwidth=79, newline="\n", &genspace)
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81 | @output = output
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82 | @maxwidth = maxwidth
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83 | @newline = newline
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84 | @genspace = genspace || lambda {|n| ' ' * n}
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85 |
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86 | @output_width = 0
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87 | @buffer_width = 0
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88 | @buffer = []
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89 |
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90 | root_group = Group.new(0)
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91 | @group_stack = [root_group]
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92 | @group_queue = GroupQueue.new(root_group)
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93 | @indent = 0
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94 | end
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95 | attr_reader :output, :maxwidth, :newline, :genspace
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96 | attr_reader :indent, :group_queue
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97 |
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98 | def current_group
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99 | @group_stack.last
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100 | end
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101 |
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102 | # first? is a predicate to test the call is a first call to first? with
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103 | # current group.
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104 | #
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105 | # It is useful to format comma separated values as:
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106 | #
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107 | # q.group(1, '[', ']') {
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108 | # xxx.each {|yyy|
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109 | # unless q.first?
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110 | # q.text ','
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111 | # q.breakable
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112 | # end
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113 | # ... pretty printing yyy ...
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114 | # }
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115 | # }
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116 | #
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117 | # first? is obsoleted in 1.8.2.
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118 | #
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119 | def first?
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120 | warn "PrettyPrint#first? is obsoleted at 1.8.2."
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121 | current_group.first?
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122 | end
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123 |
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124 | def break_outmost_groups
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125 | while @maxwidth < @output_width + @buffer_width
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126 | return unless group = @group_queue.deq
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127 | until group.breakables.empty?
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128 | data = @buffer.shift
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129 | @output_width = data.output(@output, @output_width)
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130 | @buffer_width -= data.width
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131 | end
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132 | while [email protected]? && Text === @buffer.first
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133 | text = @buffer.shift
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134 | @output_width = text.output(@output, @output_width)
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135 | @buffer_width -= text.width
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136 | end
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137 | end
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138 | end
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139 |
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140 | # This adds +obj+ as a text of +width+ columns in width.
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141 | #
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142 | # If +width+ is not specified, obj.length is used.
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143 | #
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144 | def text(obj, width=obj.length)
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145 | if @buffer.empty?
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146 | @output << obj
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147 | @output_width += width
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148 | else
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149 | text = @buffer.last
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150 | unless Text === text
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151 | text = Text.new
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152 | @buffer << text
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153 | end
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154 | text.add(obj, width)
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155 | @buffer_width += width
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156 | break_outmost_groups
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157 | end
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158 | end
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159 |
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160 | def fill_breakable(sep=' ', width=sep.length)
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161 | group { breakable sep, width }
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162 | end
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163 |
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164 | # This tells "you can break a line here if necessary", and a +width+\-column
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165 | # text +sep+ is inserted if a line is not broken at the point.
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166 | #
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167 | # If +sep+ is not specified, " " is used.
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168 | #
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169 | # If +width+ is not specified, +sep.length+ is used. You will have to
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170 | # specify this when +sep+ is a multibyte character, for example.
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171 | #
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172 | def breakable(sep=' ', width=sep.length)
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173 | group = @group_stack.last
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174 | if group.break?
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175 | flush
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176 | @output << @newline
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177 | @output << @genspace.call(@indent)
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178 | @output_width = @indent
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179 | @buffer_width = 0
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180 | else
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181 | @buffer << Breakable.new(sep, width, self)
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182 | @buffer_width += width
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183 | break_outmost_groups
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184 | end
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185 | end
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186 |
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187 | # Groups line break hints added in the block. The line break hints are all
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188 | # to be used or not.
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189 | #
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190 | # If +indent+ is specified, the method call is regarded as nested by
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191 | # nest(indent) { ... }.
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192 | #
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193 | # If +open_obj+ is specified, <tt>text open_obj, open_width</tt> is called
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194 | # before grouping. If +close_obj+ is specified, <tt>text close_obj,
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195 | # close_width</tt> is called after grouping.
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196 | #
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197 | def group(indent=0, open_obj='', close_obj='', open_width=open_obj.length, close_width=close_obj.length)
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198 | text open_obj, open_width
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199 | group_sub {
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200 | nest(indent) {
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201 | yield
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202 | }
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203 | }
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204 | text close_obj, close_width
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205 | end
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206 |
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207 | def group_sub
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208 | group = Group.new(@group_stack.last.depth + 1)
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209 | @group_stack.push group
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210 | @group_queue.enq group
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211 | begin
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212 | yield
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213 | ensure
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214 | @group_stack.pop
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215 | if group.breakables.empty?
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216 | @group_queue.delete group
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217 | end
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218 | end
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219 | end
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220 |
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221 | # Increases left margin after newline with +indent+ for line breaks added in
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222 | # the block.
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223 | #
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224 | def nest(indent)
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225 | @indent += indent
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226 | begin
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227 | yield
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228 | ensure
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229 | @indent -= indent
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230 | end
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231 | end
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232 |
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233 | # outputs buffered data.
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234 | #
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235 | def flush
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236 | @buffer.each {|data|
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237 | @output_width = data.output(@output, @output_width)
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238 | }
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239 | @buffer.clear
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240 | @buffer_width = 0
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241 | end
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242 |
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243 | class Text
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244 | def initialize
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245 | @objs = []
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246 | @width = 0
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247 | end
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248 | attr_reader :width
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249 |
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250 | def output(out, output_width)
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251 | @objs.each {|obj| out << obj}
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252 | output_width + @width
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253 | end
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254 |
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255 | def add(obj, width)
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256 | @objs << obj
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257 | @width += width
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258 | end
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259 | end
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260 |
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261 | class Breakable
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262 | def initialize(sep, width, q)
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263 | @obj = sep
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264 | @width = width
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265 | @pp = q
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266 | @indent = q.indent
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267 | @group = q.current_group
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268 | @group.breakables.push self
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269 | end
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270 | attr_reader :obj, :width, :indent
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271 |
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272 | def output(out, output_width)
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273 | @group.breakables.shift
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274 | if @group.break?
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275 | out << @pp.newline
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276 | out << @pp.genspace.call(@indent)
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277 | @indent
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278 | else
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279 | @pp.group_queue.delete @group if @group.breakables.empty?
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280 | out << @obj
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281 | output_width + @width
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282 | end
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283 | end
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284 | end
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285 |
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286 | class Group
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287 | def initialize(depth)
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288 | @depth = depth
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289 | @breakables = []
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290 | @break = false
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291 | end
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292 | attr_reader :depth, :breakables
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293 |
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294 | def break
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295 | @break = true
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296 | end
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297 |
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298 | def break?
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299 | @break
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300 | end
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301 |
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302 | def first?
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303 | if defined? @first
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304 | false
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305 | else
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306 | @first = false
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307 | true
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308 | end
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309 | end
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310 | end
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311 |
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312 | class GroupQueue
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313 | def initialize(*groups)
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314 | @queue = []
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315 | groups.each {|g| enq g}
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316 | end
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317 |
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318 | def enq(group)
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319 | depth = group.depth
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320 | @queue << [] until depth < @queue.length
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321 | @queue[depth] << group
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322 | end
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323 |
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324 | def deq
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325 | @queue.each {|gs|
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326 | (gs.length-1).downto(0) {|i|
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327 | unless gs[i].breakables.empty?
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328 | group = gs.slice!(i, 1).first
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329 | group.break
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330 | return group
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331 | end
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332 | }
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333 | gs.each {|group| group.break}
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334 | gs.clear
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335 | }
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336 | return nil
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337 | end
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338 |
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339 | def delete(group)
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340 | @queue[group.depth].delete(group)
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341 | end
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342 | end
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343 |
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344 | class SingleLine
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345 | def initialize(output, maxwidth=nil, newline=nil)
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346 | @output = output
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347 | @first = [true]
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348 | end
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349 |
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350 | def text(obj, width=nil)
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351 | @output << obj
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352 | end
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353 |
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354 | def breakable(sep=' ', width=nil)
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355 | @output << sep
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356 | end
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357 |
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358 | def nest(indent)
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359 | yield
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360 | end
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361 |
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362 | def group(indent=nil, open_obj='', close_obj='', open_width=nil, close_width=nil)
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363 | @first.push true
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364 | @output << open_obj
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365 | yield
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366 | @output << close_obj
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367 | @first.pop
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368 | end
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369 |
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370 | def flush
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371 | end
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372 |
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373 | def first?
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374 | result = @first[-1]
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375 | @first[-1] = false
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376 | result
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377 | end
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378 | end
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379 | end
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380 |
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381 | if __FILE__ == $0
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382 | require 'test/unit'
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383 |
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384 | class WadlerExample < Test::Unit::TestCase # :nodoc:
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385 | def setup
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386 | @tree = Tree.new("aaaa", Tree.new("bbbbb", Tree.new("ccc"),
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387 | Tree.new("dd")),
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388 | Tree.new("eee"),
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389 | Tree.new("ffff", Tree.new("gg"),
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390 | Tree.new("hhh"),
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391 | Tree.new("ii")))
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392 | end
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393 |
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394 | def hello(width)
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395 | PrettyPrint.format('', width) {|hello|
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396 | hello.group {
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397 | hello.group {
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398 | hello.group {
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399 | hello.group {
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400 | hello.text 'hello'
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401 | hello.breakable; hello.text 'a'
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402 | }
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403 | hello.breakable; hello.text 'b'
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404 | }
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405 | hello.breakable; hello.text 'c'
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406 | }
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407 | hello.breakable; hello.text 'd'
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408 | }
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409 | }
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410 | end
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411 |
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412 | def test_hello_00_06
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413 | expected = <<'End'.chomp
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414 | hello
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415 | a
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416 | b
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417 | c
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418 | d
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419 | End
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420 | assert_equal(expected, hello(0))
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421 | assert_equal(expected, hello(6))
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422 | end
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423 |
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424 | def test_hello_07_08
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425 | expected = <<'End'.chomp
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426 | hello a
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427 | b
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428 | c
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429 | d
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430 | End
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431 | assert_equal(expected, hello(7))
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432 | assert_equal(expected, hello(8))
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433 | end
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434 |
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435 | def test_hello_09_10
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436 | expected = <<'End'.chomp
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437 | hello a b
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438 | c
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439 | d
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440 | End
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441 | out = hello(9); assert_equal(expected, out)
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442 | out = hello(10); assert_equal(expected, out)
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443 | end
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444 |
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445 | def test_hello_11_12
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446 | expected = <<'End'.chomp
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447 | hello a b c
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448 | d
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449 | End
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450 | assert_equal(expected, hello(11))
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451 | assert_equal(expected, hello(12))
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452 | end
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453 |
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454 | def test_hello_13
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455 | expected = <<'End'.chomp
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456 | hello a b c d
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457 | End
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458 | assert_equal(expected, hello(13))
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459 | end
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460 |
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461 | def tree(width)
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462 | PrettyPrint.format('', width) {|q| @tree.show(q)}
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463 | end
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464 |
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465 | def test_tree_00_19
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466 | expected = <<'End'.chomp
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467 | aaaa[bbbbb[ccc,
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468 | dd],
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469 | eee,
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470 | ffff[gg,
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471 | hhh,
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472 | ii]]
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473 | End
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474 | assert_equal(expected, tree(0))
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475 | assert_equal(expected, tree(19))
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476 | end
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477 |
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478 | def test_tree_20_22
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479 | expected = <<'End'.chomp
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480 | aaaa[bbbbb[ccc, dd],
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481 | eee,
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482 | ffff[gg,
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483 | hhh,
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484 | ii]]
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485 | End
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486 | assert_equal(expected, tree(20))
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487 | assert_equal(expected, tree(22))
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488 | end
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489 |
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490 | def test_tree_23_43
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491 | expected = <<'End'.chomp
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492 | aaaa[bbbbb[ccc, dd],
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493 | eee,
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494 | ffff[gg, hhh, ii]]
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495 | End
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496 | assert_equal(expected, tree(23))
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497 | assert_equal(expected, tree(43))
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498 | end
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499 |
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500 | def test_tree_44
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501 | assert_equal(<<'End'.chomp, tree(44))
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502 | aaaa[bbbbb[ccc, dd], eee, ffff[gg, hhh, ii]]
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503 | End
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504 | end
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505 |
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506 | def tree_alt(width)
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507 | PrettyPrint.format('', width) {|q| @tree.altshow(q)}
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508 | end
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509 |
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510 | def test_tree_alt_00_18
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511 | expected = <<'End'.chomp
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512 | aaaa[
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513 | bbbbb[
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514 | ccc,
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515 | dd
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516 | ],
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517 | eee,
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518 | ffff[
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519 | gg,
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520 | hhh,
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521 | ii
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522 | ]
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523 | ]
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524 | End
|
---|
525 | assert_equal(expected, tree_alt(0))
|
---|
526 | assert_equal(expected, tree_alt(18))
|
---|
527 | end
|
---|
528 |
|
---|
529 | def test_tree_alt_19_20
|
---|
530 | expected = <<'End'.chomp
|
---|
531 | aaaa[
|
---|
532 | bbbbb[ ccc, dd ],
|
---|
533 | eee,
|
---|
534 | ffff[
|
---|
535 | gg,
|
---|
536 | hhh,
|
---|
537 | ii
|
---|
538 | ]
|
---|
539 | ]
|
---|
540 | End
|
---|
541 | assert_equal(expected, tree_alt(19))
|
---|
542 | assert_equal(expected, tree_alt(20))
|
---|
543 | end
|
---|
544 |
|
---|
545 | def test_tree_alt_20_49
|
---|
546 | expected = <<'End'.chomp
|
---|
547 | aaaa[
|
---|
548 | bbbbb[ ccc, dd ],
|
---|
549 | eee,
|
---|
550 | ffff[ gg, hhh, ii ]
|
---|
551 | ]
|
---|
552 | End
|
---|
553 | assert_equal(expected, tree_alt(21))
|
---|
554 | assert_equal(expected, tree_alt(49))
|
---|
555 | end
|
---|
556 |
|
---|
557 | def test_tree_alt_50
|
---|
558 | expected = <<'End'.chomp
|
---|
559 | aaaa[ bbbbb[ ccc, dd ], eee, ffff[ gg, hhh, ii ] ]
|
---|
560 | End
|
---|
561 | assert_equal(expected, tree_alt(50))
|
---|
562 | end
|
---|
563 |
|
---|
564 | class Tree # :nodoc:
|
---|
565 | def initialize(string, *children)
|
---|
566 | @string = string
|
---|
567 | @children = children
|
---|
568 | end
|
---|
569 |
|
---|
570 | def show(q)
|
---|
571 | q.group {
|
---|
572 | q.text @string
|
---|
573 | q.nest(@string.length) {
|
---|
574 | unless @children.empty?
|
---|
575 | q.text '['
|
---|
576 | q.nest(1) {
|
---|
577 | first = true
|
---|
578 | @children.each {|t|
|
---|
579 | if first
|
---|
580 | first = false
|
---|
581 | else
|
---|
582 | q.text ','
|
---|
583 | q.breakable
|
---|
584 | end
|
---|
585 | t.show(q)
|
---|
586 | }
|
---|
587 | }
|
---|
588 | q.text ']'
|
---|
589 | end
|
---|
590 | }
|
---|
591 | }
|
---|
592 | end
|
---|
593 |
|
---|
594 | def altshow(q)
|
---|
595 | q.group {
|
---|
596 | q.text @string
|
---|
597 | unless @children.empty?
|
---|
598 | q.text '['
|
---|
599 | q.nest(2) {
|
---|
600 | q.breakable
|
---|
601 | first = true
|
---|
602 | @children.each {|t|
|
---|
603 | if first
|
---|
604 | first = false
|
---|
605 | else
|
---|
606 | q.text ','
|
---|
607 | q.breakable
|
---|
608 | end
|
---|
609 | t.altshow(q)
|
---|
610 | }
|
---|
611 | }
|
---|
612 | q.breakable
|
---|
613 | q.text ']'
|
---|
614 | end
|
---|
615 | }
|
---|
616 | end
|
---|
617 |
|
---|
618 | end
|
---|
619 | end
|
---|
620 |
|
---|
621 | class StrictPrettyExample < Test::Unit::TestCase # :nodoc:
|
---|
622 | def prog(width)
|
---|
623 | PrettyPrint.format('', width) {|q|
|
---|
624 | q.group {
|
---|
625 | q.group {q.nest(2) {
|
---|
626 | q.text "if"; q.breakable;
|
---|
627 | q.group {
|
---|
628 | q.nest(2) {
|
---|
629 | q.group {q.text "a"; q.breakable; q.text "=="}
|
---|
630 | q.breakable; q.text "b"}}}}
|
---|
631 | q.breakable
|
---|
632 | q.group {q.nest(2) {
|
---|
633 | q.text "then"; q.breakable;
|
---|
634 | q.group {
|
---|
635 | q.nest(2) {
|
---|
636 | q.group {q.text "a"; q.breakable; q.text "<<"}
|
---|
637 | q.breakable; q.text "2"}}}}
|
---|
638 | q.breakable
|
---|
639 | q.group {q.nest(2) {
|
---|
640 | q.text "else"; q.breakable;
|
---|
641 | q.group {
|
---|
642 | q.nest(2) {
|
---|
643 | q.group {q.text "a"; q.breakable; q.text "+"}
|
---|
644 | q.breakable; q.text "b"}}}}}
|
---|
645 | }
|
---|
646 | end
|
---|
647 |
|
---|
648 | def test_00_04
|
---|
649 | expected = <<'End'.chomp
|
---|
650 | if
|
---|
651 | a
|
---|
652 | ==
|
---|
653 | b
|
---|
654 | then
|
---|
655 | a
|
---|
656 | <<
|
---|
657 | 2
|
---|
658 | else
|
---|
659 | a
|
---|
660 | +
|
---|
661 | b
|
---|
662 | End
|
---|
663 | assert_equal(expected, prog(0))
|
---|
664 | assert_equal(expected, prog(4))
|
---|
665 | end
|
---|
666 |
|
---|
667 | def test_05
|
---|
668 | expected = <<'End'.chomp
|
---|
669 | if
|
---|
670 | a
|
---|
671 | ==
|
---|
672 | b
|
---|
673 | then
|
---|
674 | a
|
---|
675 | <<
|
---|
676 | 2
|
---|
677 | else
|
---|
678 | a +
|
---|
679 | b
|
---|
680 | End
|
---|
681 | assert_equal(expected, prog(5))
|
---|
682 | end
|
---|
683 |
|
---|
684 | def test_06
|
---|
685 | expected = <<'End'.chomp
|
---|
686 | if
|
---|
687 | a ==
|
---|
688 | b
|
---|
689 | then
|
---|
690 | a <<
|
---|
691 | 2
|
---|
692 | else
|
---|
693 | a +
|
---|
694 | b
|
---|
695 | End
|
---|
696 | assert_equal(expected, prog(6))
|
---|
697 | end
|
---|
698 |
|
---|
699 | def test_07
|
---|
700 | expected = <<'End'.chomp
|
---|
701 | if
|
---|
702 | a ==
|
---|
703 | b
|
---|
704 | then
|
---|
705 | a <<
|
---|
706 | 2
|
---|
707 | else
|
---|
708 | a + b
|
---|
709 | End
|
---|
710 | assert_equal(expected, prog(7))
|
---|
711 | end
|
---|
712 |
|
---|
713 | def test_08
|
---|
714 | expected = <<'End'.chomp
|
---|
715 | if
|
---|
716 | a == b
|
---|
717 | then
|
---|
718 | a << 2
|
---|
719 | else
|
---|
720 | a + b
|
---|
721 | End
|
---|
722 | assert_equal(expected, prog(8))
|
---|
723 | end
|
---|
724 |
|
---|
725 | def test_09
|
---|
726 | expected = <<'End'.chomp
|
---|
727 | if a == b
|
---|
728 | then
|
---|
729 | a << 2
|
---|
730 | else
|
---|
731 | a + b
|
---|
732 | End
|
---|
733 | assert_equal(expected, prog(9))
|
---|
734 | end
|
---|
735 |
|
---|
736 | def test_10
|
---|
737 | expected = <<'End'.chomp
|
---|
738 | if a == b
|
---|
739 | then
|
---|
740 | a << 2
|
---|
741 | else a + b
|
---|
742 | End
|
---|
743 | assert_equal(expected, prog(10))
|
---|
744 | end
|
---|
745 |
|
---|
746 | def test_11_31
|
---|
747 | expected = <<'End'.chomp
|
---|
748 | if a == b
|
---|
749 | then a << 2
|
---|
750 | else a + b
|
---|
751 | End
|
---|
752 | assert_equal(expected, prog(11))
|
---|
753 | assert_equal(expected, prog(15))
|
---|
754 | assert_equal(expected, prog(31))
|
---|
755 | end
|
---|
756 |
|
---|
757 | def test_32
|
---|
758 | expected = <<'End'.chomp
|
---|
759 | if a == b then a << 2 else a + b
|
---|
760 | End
|
---|
761 | assert_equal(expected, prog(32))
|
---|
762 | end
|
---|
763 |
|
---|
764 | end
|
---|
765 |
|
---|
766 | class TailGroup < Test::Unit::TestCase # :nodoc:
|
---|
767 | def test_1
|
---|
768 | out = PrettyPrint.format('', 10) {|q|
|
---|
769 | q.group {
|
---|
770 | q.group {
|
---|
771 | q.text "abc"
|
---|
772 | q.breakable
|
---|
773 | q.text "def"
|
---|
774 | }
|
---|
775 | q.group {
|
---|
776 | q.text "ghi"
|
---|
777 | q.breakable
|
---|
778 | q.text "jkl"
|
---|
779 | }
|
---|
780 | }
|
---|
781 | }
|
---|
782 | assert_equal("abc defghi\njkl", out)
|
---|
783 | end
|
---|
784 | end
|
---|
785 |
|
---|
786 | class NonString < Test::Unit::TestCase # :nodoc:
|
---|
787 | def format(width)
|
---|
788 | PrettyPrint.format([], width, 'newline', lambda {|n| "#{n} spaces"}) {|q|
|
---|
789 | q.text(3, 3)
|
---|
790 | q.breakable(1, 1)
|
---|
791 | q.text(3, 3)
|
---|
792 | }
|
---|
793 | end
|
---|
794 |
|
---|
795 | def test_6
|
---|
796 | assert_equal([3, "newline", "0 spaces", 3], format(6))
|
---|
797 | end
|
---|
798 |
|
---|
799 | def test_7
|
---|
800 | assert_equal([3, 1, 3], format(7))
|
---|
801 | end
|
---|
802 |
|
---|
803 | end
|
---|
804 |
|
---|
805 | class Fill < Test::Unit::TestCase # :nodoc:
|
---|
806 | def format(width)
|
---|
807 | PrettyPrint.format('', width) {|q|
|
---|
808 | q.group {
|
---|
809 | q.text 'abc'
|
---|
810 | q.fill_breakable
|
---|
811 | q.text 'def'
|
---|
812 | q.fill_breakable
|
---|
813 | q.text 'ghi'
|
---|
814 | q.fill_breakable
|
---|
815 | q.text 'jkl'
|
---|
816 | q.fill_breakable
|
---|
817 | q.text 'mno'
|
---|
818 | q.fill_breakable
|
---|
819 | q.text 'pqr'
|
---|
820 | q.fill_breakable
|
---|
821 | q.text 'stu'
|
---|
822 | }
|
---|
823 | }
|
---|
824 | end
|
---|
825 |
|
---|
826 | def test_00_06
|
---|
827 | expected = <<'End'.chomp
|
---|
828 | abc
|
---|
829 | def
|
---|
830 | ghi
|
---|
831 | jkl
|
---|
832 | mno
|
---|
833 | pqr
|
---|
834 | stu
|
---|
835 | End
|
---|
836 | assert_equal(expected, format(0))
|
---|
837 | assert_equal(expected, format(6))
|
---|
838 | end
|
---|
839 |
|
---|
840 | def test_07_10
|
---|
841 | expected = <<'End'.chomp
|
---|
842 | abc def
|
---|
843 | ghi jkl
|
---|
844 | mno pqr
|
---|
845 | stu
|
---|
846 | End
|
---|
847 | assert_equal(expected, format(7))
|
---|
848 | assert_equal(expected, format(10))
|
---|
849 | end
|
---|
850 |
|
---|
851 | def test_11_14
|
---|
852 | expected = <<'End'.chomp
|
---|
853 | abc def ghi
|
---|
854 | jkl mno pqr
|
---|
855 | stu
|
---|
856 | End
|
---|
857 | assert_equal(expected, format(11))
|
---|
858 | assert_equal(expected, format(14))
|
---|
859 | end
|
---|
860 |
|
---|
861 | def test_15_18
|
---|
862 | expected = <<'End'.chomp
|
---|
863 | abc def ghi jkl
|
---|
864 | mno pqr stu
|
---|
865 | End
|
---|
866 | assert_equal(expected, format(15))
|
---|
867 | assert_equal(expected, format(18))
|
---|
868 | end
|
---|
869 |
|
---|
870 | def test_19_22
|
---|
871 | expected = <<'End'.chomp
|
---|
872 | abc def ghi jkl mno
|
---|
873 | pqr stu
|
---|
874 | End
|
---|
875 | assert_equal(expected, format(19))
|
---|
876 | assert_equal(expected, format(22))
|
---|
877 | end
|
---|
878 |
|
---|
879 | def test_23_26
|
---|
880 | expected = <<'End'.chomp
|
---|
881 | abc def ghi jkl mno pqr
|
---|
882 | stu
|
---|
883 | End
|
---|
884 | assert_equal(expected, format(23))
|
---|
885 | assert_equal(expected, format(26))
|
---|
886 | end
|
---|
887 |
|
---|
888 | def test_27
|
---|
889 | expected = <<'End'.chomp
|
---|
890 | abc def ghi jkl mno pqr stu
|
---|
891 | End
|
---|
892 | assert_equal(expected, format(27))
|
---|
893 | end
|
---|
894 |
|
---|
895 | end
|
---|
896 | end
|
---|