<?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/Utils/String.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-keyword'>module</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'>String</span> <a name="line-2"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>quote</span> <a name="line-3"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>showIndex</span> <a name="line-4"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>addFinalNewLine</span> <a name="line-5"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>indent</span> <a name="line-6"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-7"></a> <a name="line-8"></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-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Numeric</span> <a name="line-10"></a> <a name="line-11"></a><span class='hs-comment'>-- | 'quote' adds double quotes around the string, replaces newline</span> <a name="line-12"></a><span class='hs-comment'>-- characters with @\n@, and escapes double quotes and backslashes</span> <a name="line-13"></a><span class='hs-comment'>-- within the string. This is different from the behaviour of 'show':</span> <a name="line-14"></a><span class='hs-comment'>--</span> <a name="line-15"></a><span class='hs-comment'>-- @</span> <a name="line-16"></a><span class='hs-comment'>-- \> 'putStrLn' $ 'show' \"\\x2200\"</span> <a name="line-17"></a><span class='hs-comment'>-- \"\\8704\"</span> <a name="line-18"></a><span class='hs-comment'>-- \> 'putStrLn' $ 'quote' \"\\x2200\"</span> <a name="line-19"></a><span class='hs-comment'>-- \"∀\"</span> <a name="line-20"></a><span class='hs-comment'>-- @</span> <a name="line-21"></a><span class='hs-comment'>--</span> <a name="line-22"></a><span class='hs-comment'>-- (The code examples above have been tested using version 4.2.0.0 of</span> <a name="line-23"></a><span class='hs-comment'>-- the base library.)</span> <a name="line-24"></a> <a name="line-25"></a><a name="quote"></a><span class='hs-definition'>quote</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-26"></a><span class='hs-definition'>quote</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\""</span> <span class='hs-varop'>++</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>escape</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\""</span> <a name="line-27"></a> <span class='hs-keyword'>where</span> <a name="line-28"></a> <span class='hs-varid'>escape</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\n'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\n"</span> <a name="line-29"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>c</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>escapeChars</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'\\'</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span> <a name="line-30"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span> <a name="line-31"></a> <a name="line-32"></a> <span class='hs-varid'>escapeChars</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\"\\"</span> <a name="line-33"></a> <a name="line-34"></a><span class='hs-comment'>-- | Shows a non-negative integer using the characters ₀-₉ instead of</span> <a name="line-35"></a><span class='hs-comment'>-- 0-9.</span> <a name="line-36"></a> <a name="line-37"></a><a name="showIndex"></a><span class='hs-definition'>showIndex</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Integral</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-38"></a><span class='hs-definition'>showIndex</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <a name="line-39"></a> <span class='hs-varid'>showIntAtBase</span> <span class='hs-num'>10</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>toEnum</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromEnum</span> <span class='hs-chr'>'\x2080'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span> <span class='hs-str'>""</span> <a name="line-40"></a> <a name="line-41"></a><span class='hs-comment'>-- | Adds a final newline if there is not already one.</span> <a name="line-42"></a> <a name="line-43"></a><a name="addFinalNewLine"></a><span class='hs-definition'>addFinalNewLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-44"></a><span class='hs-definition'>addFinalNewLine</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\n"</span> <a name="line-45"></a><span class='hs-definition'>addFinalNewLine</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>last</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\n'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <a name="line-46"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\n"</span> <a name="line-47"></a> <a name="line-48"></a><span class='hs-comment'>-- | Indents every line the given number of steps.</span> <a name="line-49"></a> <a name="line-50"></a><a name="indent"></a><span class='hs-definition'>indent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integral</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-51"></a><span class='hs-definition'>indent</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unlines</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>genericReplicate</span> <span class='hs-varid'>i</span> <span class='hs-chr'>' '</span> <span class='hs-varop'>++</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lines</span> </pre></body> </html>
