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Added examples for Nit to samples.
Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
This commit is contained in:
Lucas Bajolet
243
samples/Nit/draw_operation.nit
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243
samples/Nit/draw_operation.nit
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# This file is part of NIT ( http://www.nitlanguage.org ).
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#
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# Copyright 2012-2013 Alexis Laferrière <alexis.laf@xymus.net>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Draws an arithmetic operation to the terminal
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module draw_operation
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redef enum Int
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fun n_chars: Int `{
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int c;
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if ( abs(recv) >= 10 )
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c = 1+(int)log10f( (float)abs(recv) );
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else
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c = 1;
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if ( recv < 0 ) c ++;
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return c;
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`}
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end
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redef enum Char
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fun as_operator(a, b: Int): Int
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do
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if self == '+' then return a + b
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if self == '-' then return a - b
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if self == '*' then return a * b
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if self == '/' then return a / b
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if self == '%' then return a % b
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abort
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end
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fun override_dispc: Bool
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do
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return self == '+' or self == '-' or self == '*' or self == '/' or self == '%'
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end
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fun lines(s: Int): Array[Line]
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do
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if self == '+' then
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return [new Line(new P(0,s/2),1,0,s), new Line(new P(s/2,1),0,1,s-2)]
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else if self == '-' then
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return [new Line(new P(0,s/2),1,0,s)]
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else if self == '*' then
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var lines = new Array[Line]
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for y in [1..s-1[ do
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lines.add( new Line(new P(1,y), 1,0,s-2) )
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end
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return lines
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else if self == '/' then
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return [new Line(new P(s-1,0), -1,1, s )]
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else if self == '%' then
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var q4 = s/4
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var lines = [new Line(new P(s-1,0),-1,1,s)]
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for l in [0..q4[ do
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lines.append([ new Line( new P(0,l), 1,0,q4), new Line( new P(s-1,s-1-l), -1,0,q4) ])
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end
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return lines
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else if self == '1' then
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return [new Line(new P(s/2,0), 0,1,s),new Line(new P(0,s-1),1,0,s),
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new Line( new P(s/2,0),-1,1,s/2)]
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else if self == '2' then
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return [new Line(new P(0,0), 1,0,s),new Line(new P(s-1,0),0,1,s/2),
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new Line( new P(0,s-1),1,0,s), new Line( new P(0,s/2), 0,1,s/2),
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new Line( new P(0,s/2), 1,0,s)]
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else if self == '3' then
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return [new Line(new P(0,0), 1,0,s),new Line(new P(s-1,0),0,1,s),
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new Line( new P(0,s-1),1,0,s), new Line( new P(0,s/2), 1,0,s)]
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else if self == '4' then
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return [new Line(new P(s-1,0),0,1,s), new Line( new P(0,0), 0,1,s/2),
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new Line( new P(0,s/2), 1,0,s)]
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else if self == '5' then
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return [new Line(new P(0,0), 1,0,s),new Line(new P(s-1,s/2),0,1,s/2),
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new Line( new P(0,s-1),1,0,s), new Line( new P(0,0), 0,1,s/2),
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new Line( new P(0,s/2), 1,0,s)]
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else if self == '6' then
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return [new Line(new P(0,0), 1,0,s),new Line(new P(s-1,s/2),0,1,s/2),
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new Line( new P(0,s-1),1,0,s), new Line( new P(0,0), 0,1,s),
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new Line( new P(0,s/2), 1,0,s)]
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else if self == '7' then
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var tl = new P(0,0)
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var tr = new P(s-1,0)
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return [new Line(tl, 1,0,s), new Line(tr,-1,1,s)]
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else if self == '8' then
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return [new Line(new P(0,0), 1,0,s),new Line(new P(s-1,0),0,1,s),
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new Line( new P(0,s-1),1,0,s), new Line( new P(0,0), 0,1,s),
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new Line( new P(0,s/2), 1,0,s)]
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else if self == '9' then
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return [new Line(new P(0,0), 1,0,s),new Line(new P(s-1,0),0,1,s),
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new Line( new P(0,s-1),1,0,s), new Line( new P(0,0), 0,1,s/2),
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new Line( new P(0,s/2), 1,0,s)]
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else if self == '0' then
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return [new Line(new P(0,0), 1,0,s),new Line(new P(s-1,0),0,1,s),
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new Line( new P(0,s-1),1,0,s), new Line( new P(0,0), 0,1,s)]
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end
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return new Array[Line]
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end
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end
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class P
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var x : Int
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var y : Int
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end
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redef class String
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# hack is to support a bug in the evaluation software
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fun draw(dispc: Char, size, gap: Int, hack: Bool)
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do
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var w = size * length +(length-1)*gap
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var h = size
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var map = new Array[Array[Char]]
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for x in [0..w[ do
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map[x] = new Array[Char].filled_with( ' ', h )
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end
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var ci = 0
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for c in self.chars do
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var local_dispc
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if c.override_dispc then
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local_dispc = c
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else
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local_dispc = dispc
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end
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var lines = c.lines( size )
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for line in lines do
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var x = line.o.x+ci*size
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x += ci*gap
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var y = line.o.y
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for s in [0..line.len[ do
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assert map.length > x and map[x].length > y else print "setting {x},{y} as {local_dispc}"
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map[x][y] = local_dispc
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x += line.step_x
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y += line.step_y
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end
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end
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ci += 1
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end
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if hack then
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for c in [0..size[ do
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map[c][0] = map[map.length-size+c][0]
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map[map.length-size+c][0] = ' '
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end
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end
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for y in [0..h[ do
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for x in [0..w[ do
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printn map[x][y]
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end
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print ""
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end
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end
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end
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class Line
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var o : P
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var step_x : Int
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var step_y : Int
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var len : Int
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end
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var a
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var b
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var op_char
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var disp_char
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var disp_size
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var disp_gap
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if "NIT_TESTING".environ == "true" then
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a = 567
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b = 13
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op_char = '*'
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disp_char = 'O'
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disp_size = 8
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disp_gap = 1
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else
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printn "Left operand: "
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a = gets.to_i
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printn "Right operand: "
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b = gets.to_i
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printn "Operator (+, -, *, /, %): "
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op_char = gets.chars[0]
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printn "Char to display: "
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disp_char = gets.chars[0]
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printn "Size of text: "
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disp_size = gets.to_i
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printn "Space between digits: "
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disp_gap = gets.to_i
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end
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var result = op_char.as_operator( a, b )
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var len_a = a.n_chars
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var len_b = b.n_chars
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var len_res = result.n_chars
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var max_len = len_a.max( len_b.max( len_res ) ) + 1
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# draw first line
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var d = max_len - len_a
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var line_a = ""
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for i in [0..d[ do line_a += " "
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line_a += a.to_s
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line_a.draw( disp_char, disp_size, disp_gap, false )
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print ""
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# draw second line
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d = max_len - len_b-1
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var line_b = op_char.to_s
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for i in [0..d[ do line_b += " "
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line_b += b.to_s
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line_b.draw( disp_char, disp_size, disp_gap, false )
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# draw -----
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print ""
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for i in [0..disp_size*max_len+(max_len-1)*disp_gap] do
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printn "_"
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end
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print ""
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print ""
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# draw result
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d = max_len - len_res
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var line_res = ""
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for i in [0..d[ do line_res += " "
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line_res += result.to_s
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line_res.draw( disp_char, disp_size, disp_gap, false )
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