<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ -->
<title>src/full/Agda/Interaction/Highlighting/Range.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE DeriveDataTypeable #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-- | Ranges.</span>
<a name="line-4"></a>
<a name="line-5"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Highlighting</span><span class='hs-varop'>.</span><span class='hs-conid'>Range</span>
<a name="line-6"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>Range</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-7"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rangeInvariant</span>
<a name="line-8"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Ranges</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-9"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rangesInvariant</span>
<a name="line-10"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>overlapping</span>
<a name="line-11"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>empty</span>
<a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rangeToPositions</span>
<a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rangesToPositions</span>
<a name="line-14"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rToR</span>
<a name="line-15"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>minus</span>
<a name="line-16"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Interaction</span><span class='hs-varop'>.</span><span class='hs-conid'>Highlighting</span><span class='hs-varop'>.</span><span class='hs-conid'>Range</span><span class='hs-varop'>.</span><span class='hs-varid'>tests</span>
<a name="line-17"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Typeable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Syntax</span><span class='hs-varop'>.</span><span class='hs-conid'>Position</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>P</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>TestHelpers</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Agda</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>QuickCheck</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-comment'>-- | Character ranges. The first character in the file has position 1.</span>
<a name="line-29"></a><span class='hs-comment'>-- Note that the 'to' position is considered to be outside of the</span>
<a name="line-30"></a><span class='hs-comment'>-- range.</span>
<a name="line-31"></a><span class='hs-comment'>--</span>
<a name="line-32"></a><span class='hs-comment'>-- Invariant: @'from' '<=' 'to'@.</span>
<a name="line-33"></a>
<a name="line-34"></a><a name="Range"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Range</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Range</span> <span class='hs-layout'>{</span> <span class='hs-varid'>from</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integer</span> <span class='hs-layout'>}</span>
<a name="line-35"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-36"></a>
<a name="line-37"></a><span class='hs-comment'>-- | The 'Range' invariant.</span>
<a name="line-38"></a>
<a name="line-39"></a><a name="rangeInvariant"></a><span class='hs-definition'>rangeInvariant</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Range</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-40"></a><span class='hs-definition'>rangeInvariant</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>from</span> <span class='hs-varid'>r</span> <span class='hs-varop'><=</span> <span class='hs-varid'>to</span> <span class='hs-varid'>r</span>
<a name="line-41"></a>
<a name="line-42"></a><span class='hs-comment'>-- | Zero or more consecutive and separated ranges.</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="Ranges"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Ranges</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ranges</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Range</span><span class='hs-keyglyph'>]</span>
<a name="line-45"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='hs-comment'>-- | The 'Ranges' invariant.</span>
<a name="line-48"></a>
<a name="line-49"></a><a name="rangesInvariant"></a><span class='hs-definition'>rangesInvariant</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ranges</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-50"></a><span class='hs-definition'>rangesInvariant</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ranges</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-51"></a><span class='hs-definition'>rangesInvariant</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ranges</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-52"></a> <span class='hs-varid'>and</span> <span class='hs-layout'>(</span><span class='hs-varid'>zipWith</span> <span class='hs-layout'>(</span><span class='hs-varop'><</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>to</span> <span class='hs-varop'>$</span> <span class='hs-varid'>init</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>from</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tail</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-53"></a>
<a name="line-54"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-55"></a><span class='hs-comment'>-- Queries</span>
<a name="line-56"></a>
<a name="line-57"></a><span class='hs-comment'>-- | 'True' iff the ranges overlap.</span>
<a name="line-58"></a><span class='hs-comment'>--</span>
<a name="line-59"></a><span class='hs-comment'>-- The ranges are assumed to be well-formed.</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="overlapping"></a><span class='hs-definition'>overlapping</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Range</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Range</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-62"></a><span class='hs-definition'>overlapping</span> <span class='hs-varid'>r1</span> <span class='hs-varid'>r2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-varop'>$</span>
<a name="line-63"></a> <span class='hs-varid'>to</span> <span class='hs-varid'>r1</span> <span class='hs-varop'><=</span> <span class='hs-varid'>from</span> <span class='hs-varid'>r2</span> <span class='hs-varop'>||</span> <span class='hs-varid'>to</span> <span class='hs-varid'>r2</span> <span class='hs-varop'><=</span> <span class='hs-varid'>from</span> <span class='hs-varid'>r1</span>
<a name="line-64"></a>
<a name="line-65"></a><span class='hs-comment'>-- | 'True' iff the range is empty.</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="empty"></a><span class='hs-definition'>empty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Range</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-68"></a><span class='hs-definition'>empty</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>to</span> <span class='hs-varid'>r</span> <span class='hs-varop'><=</span> <span class='hs-varid'>from</span> <span class='hs-varid'>r</span>
<a name="line-69"></a>
<a name="line-70"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-71"></a><span class='hs-comment'>-- Conversion</span>
<a name="line-72"></a>
<a name="line-73"></a><span class='hs-comment'>-- | Converts a range to a list of positions.</span>
<a name="line-74"></a>
<a name="line-75"></a><a name="rangeToPositions"></a><span class='hs-definition'>rangeToPositions</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Range</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Integer</span><span class='hs-keyglyph'>]</span>
<a name="line-76"></a><span class='hs-definition'>rangeToPositions</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>from</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>..</span> <span class='hs-varid'>to</span> <span class='hs-varid'>r</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-keyglyph'>]</span>
<a name="line-77"></a>
<a name="line-78"></a><span class='hs-comment'>-- | Converts several ranges to a list of positions.</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="rangesToPositions"></a><span class='hs-definition'>rangesToPositions</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ranges</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Integer</span><span class='hs-keyglyph'>]</span>
<a name="line-81"></a><span class='hs-definition'>rangesToPositions</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ranges</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>rangeToPositions</span> <span class='hs-varid'>rs</span>
<a name="line-82"></a>
<a name="line-83"></a><a name="prop_rangesToPositions"></a><span class='hs-definition'>prop_rangesToPositions</span> <span class='hs-varid'>rs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sorted</span> <span class='hs-layout'>(</span><span class='hs-varid'>rangesToPositions</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span>
<a name="line-84"></a>
<a name="line-85"></a><span class='hs-comment'>-- | Converts a 'P.Range' to a 'Ranges'.</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="rToR"></a><span class='hs-definition'>rToR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-conid'>Range</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ranges</span>
<a name="line-88"></a><span class='hs-definition'>rToR</span> <span class='hs-layout'>(</span><span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-conid'>Range</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ranges</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>iToR</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span>
<a name="line-89"></a> <span class='hs-keyword'>where</span>
<a name="line-90"></a> <span class='hs-varid'>iToR</span> <span class='hs-layout'>(</span><span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-conid'>Interval</span> <span class='hs-layout'>{</span> <span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-varid'>iStart</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-conid'>Pn</span> <span class='hs-layout'>{</span> <span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-varid'>posPos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pos1</span> <span class='hs-layout'>}</span>
<a name="line-91"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-varid'>iEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-conid'>Pn</span> <span class='hs-layout'>{</span> <span class='hs-conid'>P</span><span class='hs-varop'>.</span><span class='hs-varid'>posPos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pos2</span> <span class='hs-layout'>}</span>
<a name="line-92"></a> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-93"></a> <span class='hs-conid'>Range</span> <span class='hs-layout'>{</span> <span class='hs-varid'>from</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toInteger</span> <span class='hs-varid'>pos1</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toInteger</span> <span class='hs-varid'>pos2</span> <span class='hs-layout'>}</span>
<a name="line-94"></a>
<a name="line-95"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-96"></a><span class='hs-comment'>-- Operations</span>
<a name="line-97"></a>
<a name="line-98"></a><span class='hs-comment'>-- | @minus xs ys@ computes the difference between @xs@ and @ys@: the</span>
<a name="line-99"></a><span class='hs-comment'>-- result contains those positions which are present in @xs@ but not</span>
<a name="line-100"></a><span class='hs-comment'>-- in @ys@.</span>
<a name="line-101"></a><span class='hs-comment'>--</span>
<a name="line-102"></a><span class='hs-comment'>-- Linear in the lengths of the input ranges.</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="minus"></a><span class='hs-definition'>minus</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ranges</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ranges</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ranges</span>
<a name="line-105"></a><span class='hs-definition'>minus</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ranges</span> <span class='hs-varid'>rs1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ranges</span> <span class='hs-varid'>rs2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Ranges</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-varid'>rs1</span> <span class='hs-varid'>rs2</span><span class='hs-layout'>)</span>
<a name="line-106"></a> <span class='hs-keyword'>where</span>
<a name="line-107"></a> <span class='hs-varid'>m</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-108"></a> <span class='hs-varid'>m</span> <span class='hs-varid'>xs</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xs</span>
<a name="line-109"></a> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-110"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>empty</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys</span>
<a name="line-111"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>to</span> <span class='hs-varid'>x</span> <span class='hs-varop'><</span> <span class='hs-varid'>from</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>m</span> <span class='hs-varid'>xs</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>to</span> <span class='hs-varid'>y</span> <span class='hs-varop'><</span> <span class='hs-varid'>from</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys</span>
<a name="line-113"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>from</span> <span class='hs-varid'>x</span> <span class='hs-varop'><</span> <span class='hs-varid'>from</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Range</span> <span class='hs-layout'>{</span> <span class='hs-varid'>from</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>from</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>from</span> <span class='hs-varid'>y</span> <span class='hs-layout'>}</span> <span class='hs-conop'>:</span>
<a name="line-114"></a> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Range</span> <span class='hs-layout'>{</span> <span class='hs-varid'>from</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>from</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>to</span> <span class='hs-varid'>x</span> <span class='hs-layout'>}</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-115"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>to</span> <span class='hs-varid'>y</span> <span class='hs-varop'><</span> <span class='hs-varid'>to</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Range</span> <span class='hs-layout'>{</span> <span class='hs-varid'>from</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>to</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>to</span> <span class='hs-varid'>x</span> <span class='hs-layout'>}</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys</span>
<a name="line-116"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-varid'>xs</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-117"></a>
<a name="line-118"></a><a name="prop_minus"></a><span class='hs-definition'>prop_minus</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span>
<a name="line-119"></a> <span class='hs-varid'>rangesToPositions</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-varop'>`minus`</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span>
<a name="line-120"></a> <span class='hs-varid'>rangesToPositions</span> <span class='hs-varid'>xs</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>rangesToPositions</span> <span class='hs-varid'>ys</span>
<a name="line-121"></a>
<a name="line-122"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-123"></a><span class='hs-comment'>-- Generators</span>
<a name="line-124"></a>
<a name="line-125"></a><a name="instance%20Arbitrary%20Range"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Arbitrary</span> <span class='hs-conid'>Range</span> <span class='hs-keyword'>where</span>
<a name="line-126"></a> <span class='hs-varid'>arbitrary</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-127"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>from</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>sort</span> <span class='hs-varop'>$</span> <span class='hs-varid'>vectorOf</span> <span class='hs-num'>2</span> <span class='hs-varid'>positive</span>
<a name="line-128"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Range</span> <span class='hs-layout'>{</span> <span class='hs-varid'>from</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>from</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>to</span> <span class='hs-layout'>}</span>
<a name="line-129"></a>
<a name="line-130"></a><a name="instance%20CoArbitrary%20Range"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>CoArbitrary</span> <span class='hs-conid'>Range</span> <span class='hs-keyword'>where</span>
<a name="line-131"></a> <span class='hs-varid'>coarbitrary</span> <span class='hs-layout'>(</span><span class='hs-conid'>Range</span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coarbitrary</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>coarbitrary</span> <span class='hs-varid'>t</span>
<a name="line-132"></a>
<a name="line-133"></a><a name="instance%20Arbitrary%20Ranges"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Arbitrary</span> <span class='hs-conid'>Ranges</span> <span class='hs-keyword'>where</span>
<a name="line-134"></a> <span class='hs-varid'>arbitrary</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rToR</span> <span class='hs-varop'><$></span> <span class='hs-varid'>arbitrary</span>
<a name="line-135"></a>
<a name="line-136"></a><span class='hs-comment'>------------------------------------------------------------------------</span>
<a name="line-137"></a><span class='hs-comment'>-- All tests</span>
<a name="line-138"></a>
<a name="line-139"></a><span class='hs-comment'>-- | All the properties.</span>
<a name="line-140"></a>
<a name="line-141"></a><a name="tests"></a><span class='hs-definition'>tests</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-142"></a><span class='hs-definition'>tests</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runTests</span> <span class='hs-str'>"Agda.Interaction.Highlighting.Range"</span>
<a name="line-143"></a> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>quickCheck'</span> <span class='hs-varid'>rangeInvariant</span>
<a name="line-144"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>quickCheck'</span> <span class='hs-varid'>rangesInvariant</span>
<a name="line-145"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>quickCheck'</span> <span class='hs-layout'>(</span><span class='hs-varid'>rangesInvariant</span> <span class='hs-varop'>.</span> <span class='hs-varid'>rToR</span><span class='hs-layout'>)</span>
<a name="line-146"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>quickCheck'</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>r1</span> <span class='hs-varid'>r2</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>rangesInvariant</span> <span class='hs-varop'>$</span> <span class='hs-varid'>r1</span> <span class='hs-varop'>`minus`</span> <span class='hs-varid'>r2</span><span class='hs-layout'>)</span>
<a name="line-147"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>quickCheck'</span> <span class='hs-varid'>prop_rangesToPositions</span>
<a name="line-148"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>quickCheck'</span> <span class='hs-varid'>prop_minus</span>
<a name="line-149"></a> <span class='hs-keyglyph'>]</span>
</pre></body>
</html>
