husky (empty) → 0.1
raw patch · 16 files changed
+2012/−0 lines, 16 filesdep +basedep +containersdep +mtlsetup-changed
Dependencies added: base, containers, mtl, parsec, readline
Files
- .gitignore +5/−0
- AUTHORS +1/−0
- COPYING +674/−0
- Makefile +44/−0
- README +6/−0
- Setup.hs +3/−0
- doc/usage.html +356/−0
- doc/usage.rst +71/−0
- husky.cabal +24/−0
- src/CalculatorParser.hs +173/−0
- src/CalculatorState.hs +56/−0
- src/Messages.hs +52/−0
- src/PrettyPrint.hs +68/−0
- src/TokenParser.hs +129/−0
- src/husky.hs +65/−0
- test/PropertyTest.hs +285/−0
+ .gitignore view
@@ -0,0 +1,5 @@+*.hi+*.o+husky+*.swp+TAGS
+ AUTHORS view
@@ -0,0 +1,1 @@+Markus Dittrich <markusle@gmail.com>
+ COPYING view
@@ -0,0 +1,674 @@+ GNU GENERAL PUBLIC LICENSE+ Version 3, 29 June 2007++ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++ Preamble++ The GNU General Public License is a free, copyleft license for+software and other kinds of works.++ The licenses for most software and other practical works are designed+to take away your freedom to share and change the works. By contrast,+the GNU General Public License is intended to guarantee your freedom to+share and change all versions of a program--to make sure it remains free+software for all its users. We, the Free Software Foundation, use the+GNU General Public License for most of our software; it applies also to+any other work released this way by its authors. You can apply it to+your programs, too.++ When we speak of free software, we are referring to freedom, not+price. 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Of course, your program's commands+might be different; for a GUI interface, you would use an "about box".++ You should also get your employer (if you work as a programmer) or school,+if any, to sign a "copyright disclaimer" for the program, if necessary.+For more information on this, and how to apply and follow the GNU GPL, see+<http://www.gnu.org/licenses/>.++ The GNU General Public License does not permit incorporating your program+into proprietary programs. If your program is a subroutine library, you+may consider it more useful to permit linking proprietary applications with+the library. If this is what you want to do, use the GNU Lesser General+Public License instead of this License. But first, please read+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+ Makefile view
@@ -0,0 +1,44 @@+# Copyright 2008 Markus Dittrich <markusle@gmail.com>+# Distributed under the terms of the GNU General Public License v3++VERSION=0.1+DESTDIR=+mandir=$(DESTDIR)/usr/share/man/man1+docdir=$(DESTDIR)/usr/share/doc/husky-$(VERSION)+htmldir=$(docdir)/html+bindir=$(DESTDIR)/usr/bin++GHC_FLAGS_DEVEL = -O -fwarn-incomplete-patterns -fwarn-incomplete-record-updates -fwarn-missing-fields -fwarn-missing-methods -fwarn-missing-signatures -fwarn-name-shadowing -fwarn-orphans -fwarn-overlapping-patterns -fwarn-simple-patterns -fwarn-tabs -fwarn-type-defaults -fwarn-monomorphism-restriction -fwarn-unused-binds -fwarn-unused-imports -fwarn-unused-matches+GHC_FLAGS_RELEASE = -O2++OBJECTS = src/husky.hs src/CalculatorParser.hs src/CalculatorState.hs \+ src/PrettyPrint.hs src/TokenParser.hs++all: husky++husky: $(OBJECTS)+ ghc -i./src $(GHC_FLAGS_RELEASE) --make src/husky.hs+++debug: $(OBJECTS)+ ghc -i./src $(GHC_FLAGS_DEVEL) --make src/husky.hs+++check: $(OBJECTS)+ ghc -i./src --make test/PropertyTest.hs+ ./test/PropertyTest++install: husky+ install -d $(docdir)+ install -d $(bindir)+ install -d $(htmldir)+ install -m 0755 src/husky $(bindir)/+ install -m 0644 COPYING AUTHORS $(docdir)/+ install -m 0644 doc/usage.html $(htmldir)/+++.PHONY: clean++clean:+ rm -f src/*.o src/*.hi src/husky test/*.o test/*.hi \+ test/PropertyTest
+ README view
@@ -0,0 +1,6 @@+DESCRIPTION:++husky is a command line calculator written in haskell.+husky is released under the GPL v3.++(C) 2009 Markus Dittrich
+ Setup.hs view
@@ -0,0 +1,3 @@+#!/usr/bin/env runhaskell+import Distribution.Simple+main = defaultMain
+ doc/usage.html view
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}++dl.docutils dd {+ margin-bottom: 0.5em }++/* Uncomment (and remove this text!) to get bold-faced definition list terms+dl.docutils dt {+ font-weight: bold }+*/++div.abstract {+ margin: 2em 5em }++div.abstract p.topic-title {+ font-weight: bold ;+ text-align: center }++div.admonition, div.attention, div.caution, div.danger, div.error,+div.hint, div.important, div.note, div.tip, div.warning {+ margin: 2em ;+ border: medium outset ;+ padding: 1em }++div.admonition p.admonition-title, div.hint p.admonition-title,+div.important p.admonition-title, div.note p.admonition-title,+div.tip p.admonition-title {+ font-weight: bold ;+ font-family: sans-serif }++div.attention p.admonition-title, div.caution p.admonition-title,+div.danger p.admonition-title, div.error p.admonition-title,+div.warning p.admonition-title {+ color: red ;+ font-weight: bold ;+ font-family: sans-serif }++/* Uncomment (and remove this text!) to get reduced vertical space in+ compound paragraphs.+div.compound .compound-first, div.compound .compound-middle {+ margin-bottom: 0.5em }++div.compound .compound-last, div.compound .compound-middle {+ margin-top: 0.5em }+*/++div.dedication {+ margin: 2em 5em ;+ text-align: center ;+ font-style: italic }++div.dedication p.topic-title {+ font-weight: bold ;+ font-style: normal }++div.figure {+ margin-left: 2em ;+ margin-right: 2em }++div.footer, div.header {+ clear: both;+ font-size: smaller }++div.line-block {+ display: block ;+ margin-top: 1em ;+ margin-bottom: 1em }++div.line-block div.line-block {+ margin-top: 0 ;+ margin-bottom: 0 ;+ margin-left: 1.5em }++div.sidebar {+ margin: 0 0 0.5em 1em ;+ border: medium outset ;+ padding: 1em ;+ background-color: #ffffee ;+ width: 40% ;+ float: right ;+ clear: right }++div.sidebar p.rubric {+ font-family: sans-serif ;+ font-size: medium }++div.system-messages {+ margin: 5em }++div.system-messages h1 {+ color: red }++div.system-message {+ border: medium outset ;+ padding: 1em }++div.system-message p.system-message-title {+ color: red ;+ font-weight: bold }++div.topic {+ margin: 2em }++h1.section-subtitle, h2.section-subtitle, h3.section-subtitle,+h4.section-subtitle, h5.section-subtitle, h6.section-subtitle {+ margin-top: 0.4em }++h1.title {+ text-align: center }++h2.subtitle {+ text-align: center }++hr.docutils {+ width: 75% }++img.align-left {+ clear: left }++img.align-right {+ clear: right }++ol.simple, ul.simple {+ margin-bottom: 1em }++ol.arabic {+ list-style: decimal }++ol.loweralpha {+ list-style: lower-alpha }++ol.upperalpha {+ list-style: upper-alpha }++ol.lowerroman {+ list-style: lower-roman }++ol.upperroman {+ list-style: upper-roman }++p.attribution {+ text-align: right ;+ margin-left: 50% }++p.caption {+ font-style: italic }++p.credits {+ font-style: italic ;+ font-size: smaller }++p.label {+ white-space: nowrap }++p.rubric {+ font-weight: bold ;+ font-size: larger ;+ color: maroon ;+ text-align: center }++p.sidebar-title {+ font-family: sans-serif ;+ font-weight: bold ;+ font-size: larger }++p.sidebar-subtitle {+ font-family: sans-serif ;+ font-weight: bold }++p.topic-title {+ font-weight: bold }++pre.address {+ margin-bottom: 0 ;+ margin-top: 0 ;+ font-family: serif ;+ font-size: 100% }++pre.literal-block, pre.doctest-block {+ margin-left: 2em ;+ margin-right: 2em }++span.classifier {+ font-family: sans-serif ;+ font-style: oblique }++span.classifier-delimiter {+ font-family: sans-serif ;+ font-weight: bold }++span.interpreted {+ font-family: sans-serif }++span.option {+ white-space: nowrap }++span.pre {+ white-space: pre }++span.problematic {+ color: red }++span.section-subtitle {+ /* font-size relative to parent (h1..h6 element) */+ font-size: 80% }++table.citation {+ border-left: solid 1px gray;+ margin-left: 1px }++table.docinfo {+ margin: 2em 4em }++table.docutils {+ margin-top: 0.5em ;+ margin-bottom: 0.5em }++table.footnote {+ border-left: solid 1px black;+ margin-left: 1px }++table.docutils td, table.docutils th,+table.docinfo td, table.docinfo th {+ padding-left: 0.5em ;+ padding-right: 0.5em ;+ vertical-align: top }++table.docutils th.field-name, table.docinfo th.docinfo-name {+ font-weight: bold ;+ text-align: left ;+ white-space: nowrap ;+ padding-left: 0 }++h1 tt.docutils, h2 tt.docutils, h3 tt.docutils,+h4 tt.docutils, h5 tt.docutils, h6 tt.docutils {+ font-size: 100% }++ul.auto-toc {+ list-style-type: none }++</style>+</head>+<body>+<div class="document" id="husky-command-line-calculator">+<h1 class="title">husky command line calculator</h1>+<table class="docinfo" frame="void" rules="none">+<col class="docinfo-name" />+<col class="docinfo-content" />+<tbody valign="top">+<tr><th class="docinfo-name">Author:</th>+<td>Markus Dittrich</td></tr>+<tr><th class="docinfo-name">Version:</th>+<td>0.1 (02/18/2008)</td></tr>+</tbody>+</table>+<div class="section" id="introduction">+<h1>Introduction</h1>+<p>husky is a command line calculator with a small memory+footprint. It can be used in a fashion similar to the+interactive shells of python, octave, or ghci.</p>+<p>Currently, the mathematical operations "+", "-", "*", and+"/" are supported with arbitrary nesting of parenthesised+expressions. All calculations are performed in double+precision. In addition to the standard operations above,+the following functions are currently supported:</p>+<ul class="simple">+<li>sqrt : square root</li>+<li>a^n : exponentiation (n can be arbitrary double)</li>+<li>exp : exponential function</li>+<li>cos, sin, tan : trigonometric functions</li>+</ul>+<p>Furthermore, users can define any number of variables via</p>+<p><em>variable name</em> = value</p>+<p>where variable name can be any combination of alphanumeric+characters but has to begin with a letter. Hence, <em>foobar1</em>+is fine, but <em>1foobar</em> is not. Defined variables can be+used in expressions and definition of other variables.</p>+<p>Since husky uses the GNU readline library all readline+related functionality is available at husky's interactive+prompt (including command history). See <a class="footnote-reference" href="#id2" id="id1">[1]</a> for more+detail.</p>+<p>You can exit a husky session anytime by typing :q at+the command prompt.</p>+</div>+<div class="section" id="copyright-and-license">+<h1>COPYRIGHT and LICENSE</h1>+<p>(C) 2008-2009, Markus Dittrich</p>+<p>This program is free software; you can redistribute it+and/or modify it under the terms of the GNU General Public+License Version 3 as published by the Free Software Foundation.</p>+<p>This program is distributed in the hope that it will be useful,+but WITHOUT ANY WARRANTY; without even the implied warranty of+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+GNU General Public License Version 3 for more details.</p>+</div>+<div class="section" id="bugs">+<h1>BUGS</h1>+<p>Please report all bugs to <<a class="reference external" href="mailto:markusle@gmail.com">markusle@gmail.com</a>>. Thank you!</p>+</div>+<div class="section" id="references">+<h1>References</h1>+<table class="docutils footnote" frame="void" id="id2" rules="none">+<colgroup><col class="label" /><col /></colgroup>+<tbody valign="top">+<tr><td class="label"><a class="fn-backref" href="#id1">[1]</a></td><td>The GNU readline library+<a class="reference external" href="http://tiswww.case.edu/php/chet/readline/rltop.html">http://tiswww.case.edu/php/chet/readline/rltop.html</a></td></tr>+</tbody>+</table>+</div>+</div>+</body>+</html>
+ doc/usage.rst view
@@ -0,0 +1,71 @@+============================================================+husky command line calculator+============================================================++:Author: Markus Dittrich++:Version: 0.1 (02/18/2008)+++Introduction+------------++husky is a command line calculator with a small memory+footprint. It can be used in a fashion similar to the+interactive shells of python, octave, or ghci.++Currently, the mathematical operations "+", "-", "*", and+"/" are supported with arbitrary nesting of parenthesised+expressions. All calculations are performed in double +precision. In addition to the standard operations above,+the following functions are currently supported:++- sqrt : square root+- a^n : exponentiation (n can be arbitrary double) +- exp : exponential function+- cos, sin, tan : trigonometric functions++Furthermore, users can define any number of variables via++*variable name* = value++where variable name can be any combination of alphanumeric+characters but has to begin with a letter. Hence, *foobar1*+is fine, but *1foobar* is not. Defined variables can be+used in expressions and definition of other variables.++Since husky uses the GNU readline library all readline+related functionality is available at husky's interactive+prompt (including command history). See [1]_ for more +detail.++You can exit a husky session anytime by typing :q at+the command prompt.+++COPYRIGHT and LICENSE+---------------------++\(C\) 2008-2009, Markus Dittrich++This program is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public +License Version 3 as published by the Free Software Foundation. + +This program is distributed in the hope that it will be useful,+but WITHOUT ANY WARRANTY; without even the implied warranty of+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+GNU General Public License Version 3 for more details.+++BUGS+----++Please report all bugs to <markusle@gmail.com>. Thank you!+++References+----------++.. [1] The GNU readline library + http://tiswww.case.edu/php/chet/readline/rltop.html
+ husky.cabal view
@@ -0,0 +1,24 @@+Name: husky+Version: 0.1+License: GPL+license-file: COPYING+copyright: (c) 2008 Markus Dittrich+category: console+Synopsis: A simple command line calculator.+Description: husky is a command line calculator with a small memory + footprint. It can be used in a fashion similar to the + interactive shells of python, octave, or ruby. +Author: Markus Dittrich <markus.lists@gmail.com>+Maintainer: Markus Dittrich <markus.lists@gmail.com>+stability: alpha+build-type: Simple+Homepage: http://github.com/markusle/husky/tree/master+cabal-version: >= 1.2.1+extra-source-files: README++Executable husky+ Build-Depends: base, readline >= 1.0.1.0, containers >= 0.1.0.0,+ parsec >= 2.1.0.0, mtl >= 1.1.0.0+ ghc-options: -O2+ Main-Is: husky.hs+ hs-source-dirs: src
+ src/CalculatorParser.hs view
@@ -0,0 +1,173 @@+{-----------------------------------------------------------------+ + (c) 2008-2009 Markus Dittrich + + This program is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public + License Version 3 as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ GNU General Public License Version 3 for more details.+ + You should have received a copy of the GNU General Public + License along with this program; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA.++--------------------------------------------------------------------}++-- | main archy driver+module CalculatorParser ( calculator ) where+++-- imports+import qualified Data.Map as M+import Control.Monad++-- local imports+import CalculatorState+import TokenParser+++-- | main parser entry point+calculator :: CharParser CalcState (Maybe Double, CalcState)+calculator = parse_calc + >>= \val -> getState+ >>= \state -> return (val, state)+++-- | grammar description for parser+-- NOTE: We have to make sure to provide a default+-- catch all parsing rule in case the user+-- enters something we don't understand. Otherwise+-- parsing fails and we loose our state.+parse_calc :: CharParser CalcState (Maybe Double)+parse_calc = try define_variable + <|> try (add_term >>= \x -> end_of_line >> return (Just x))+ <|> return Nothing+ <?> "math expression, variable definition " +++ "or variable name"+++-- | if the line starts off with a string we either+-- have a variable definition or want to show the value+-- stored in a variable+define_variable :: CharParser CalcState (Maybe Double)+define_variable = (spaces+ >> variable+ >>= \varName -> variable_def varName )+ <?> "variable definition"+++-- | check that we are at the end of the line; otherwise+-- parsing failed since we always expect to parse the +-- full expression+end_of_line :: CharParser CalcState ()+end_of_line = getInput >>= \input ->+ case length input of+ 0 -> return ()+ _ -> pzero+++-- | define a variable+variable_def :: String -> CharParser CalcState (Maybe Double)+variable_def varName = ( spaces+ >> reservedOp "=" + >> spaces + >> ( variable_def_by_value varName + <|> variable_def_by_var varName) )+ <?> "variable"+++-- | define a variable via a literal double+variable_def_by_value :: String -> CharParser CalcState (Maybe Double)+variable_def_by_value varName = ( add_term+ >>= \value -> updateState (insert_variable value varName)+ >> return (Just value) )+ <?> "variable from value"+++-- | define a variable via the value of another variable+variable_def_by_var :: String -> CharParser CalcState (Maybe Double)+variable_def_by_var varName = parse_variable + >>= \value -> updateState (insert_variable value varName)+ >> return (Just value)+ ++-- | look for the value of a given variable if any+parse_variable :: CharParser CalcState Double+parse_variable = ( variable + >>= \val -> spaces+ >> get_variable_value val+ >>= \result -> case result of+ Just a -> return a + Nothing -> pzero )+ <?> "variable"+ ++-- | parser for expressions chained via "+" or "-"+add_term :: CharParser CalcState Double+add_term = mul_term `chainl1` add_action+++-- | parser for expressions chained via "*" or "/"+mul_term :: CharParser CalcState Double+mul_term = exp_term `chainl1` multiply_action+++-- | parser for potentiation operations "^"+exp_term :: CharParser CalcState Double+exp_term = (spaces >> factor) `chainl1` exp_action+++-- | parser for individual factors, i.e, numbers,+-- variables or operations+factor :: CharParser CalcState Double+factor = parens add_term+ <|> parse_keywords+ <|> parse_number+ <|> parse_variable+ <?> "token or variable" +++-- | parse all operations we currently know about+parse_keywords :: CharParser CalcState Double+parse_keywords = msum $ extract_ops keywords++ where+ extract_ops = foldr (\(x,y) acc -> + ((reserved x >> execute y):acc)) [] +++-- | execute the requested operator on the term enclosed+-- in parentheses +execute :: OperatorAction -> CharParser CalcState Double+execute op = parens add_term >>= return . op++ +multiply_action :: CharParser CalcState (Double -> Double -> Double)+multiply_action = (reservedOp "*" >> return (*))+ <|> (reservedOp "/" >> return (/))++add_action :: CharParser CalcState (Double -> Double -> Double)+add_action = (reservedOp "+" >> return (+))+ <|> (reservedOp "-" >> return (-))++exp_action :: CharParser CalcState (Double -> Double -> Double)+exp_action = reservedOp "^" >> return real_exp++parse_number :: CharParser CalcState Double+parse_number = naturalOrFloat + >>= \num -> notFollowedBy alphaNum+ >> case num of + Left i -> return $ fromInteger i+ Right x -> return x+++-- | function retrieving a variable from the database if+-- present +get_variable_value :: String -> CharParser CalcState (Maybe Double)+get_variable_value name = getState + >>= \(CalcState { varMap = myMap }) -> return $ M.lookup name myMap
+ src/CalculatorState.hs view
@@ -0,0 +1,56 @@+{-----------------------------------------------------------------+ + (c) 2008-2009 Markus Dittrich + + This program is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public + License Version 3 as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ GNU General Public License Version 3 for more details.+ + You should have received a copy of the GNU General Public + License along with this program; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA.++--------------------------------------------------------------------}++-- | this module contains small bits and pieces needed for +-- the calculator. Eventually, these might all find a home+-- in their separate modules+module CalculatorState ( CalcState(..)+ , defaultCalcState + , insert_variable+ ) where+++-- imports+import qualified Data.Map as M+++-- | this data structure provides some state information+-- to the calculator (variables, etc ...)+data CalcState = CalcState { varMap :: M.Map String Double }++defaultCalcState :: CalcState+defaultCalcState = CalcState { varMap = M.fromList constantList }+++-- | function adding a new variable to the database+insert_variable :: Double -> String -> CalcState -> CalcState+insert_variable num name (CalcState { varMap = theMap }) =+ CalcState { varMap = M.insert name num theMap } ++++-- | provide a few useful mathematical constants that we+-- load into the default CalculatorState+constantList :: [(String,Double)]+constantList = + [ ("pi",3.14159265358979323846264338327950288)+ , ("e",2.71828182845904523536028747135266249)+ , ("phi",1.61803398874989484820458683436563811)] -- golden ratio +
+ src/Messages.hs view
@@ -0,0 +1,52 @@+{-----------------------------------------------------------------+ + (c) 2008-2009 Markus Dittrich + + This program is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public + License Version 3 as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ GNU General Public License Version 3 for more details.+ + You should have received a copy of the GNU General Public + License along with this program; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA.++--------------------------------------------------------------------}++-- | Messages provides common messages+module Messages ( husky_result+ , parse_error+ , show_greeting+ ) where++-- imports+import System.IO++-- local imports+import PrettyPrint+++-- | display output somewhat colorful+husky_result :: IO ()+husky_result = do+ putStr $ color_string Yellow "=> "+++-- | greeting +show_greeting :: IO () +show_greeting = do + putStrLn "Welcome to husky (v0.1) (C) 2009 Markus Dittrich"+ putStrLn "-------------------------------------------------"+++-- | message indicating that something went wrong+-- during parsing+parse_error :: String -> IO ()+parse_error message = do+ putStr $ color_string Yellow "Error: "+ putStrLn $ color_string Green "Could not parse '" ++ message ++ "'"
+ src/PrettyPrint.hs view
@@ -0,0 +1,68 @@+{-----------------------------------------------------------------+ + (c) 2008-2009 Markus Dittrich + + This program is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public + License Version 3 as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ GNU General Public License Version 3 for more details.+ + You should have received a copy of the GNU General Public + License along with this program; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA.++--------------------------------------------------------------------}++-- | PrettyPrint provides tools for colored output to the terminal+module PrettyPrint ( Color(..)+ , Intensity(..)+ , color_string+ , color_string_int+ ) where+++-- define colors+data Color = Black | Red | Green | Yellow | Blue | Magenta + | Cyan | White | Reset + deriving(Enum)+++-- define intensity +data Intensity = Normal | Bold+ deriving(Eq)+++-- convert a color into the corresponding color code string+get_color_code :: Color -> String+get_color_code = show . fromEnum +++-- convert an intensity to the corresponding color code string+get_intensity_code :: Intensity -> String+get_intensity_code x+ | x == Normal = "22"+ | x == Bold = "1"+ | otherwise = "1"+++-- convenience wrapper around color string for bold colors+color_string :: Color -> String -> String+color_string = color_string_int Bold+ ++-- convert a standard string into one graphically rendered+-- allows customization of color and intensity+color_string_int :: Intensity -> Color -> String -> String+color_string_int intensity col str = + "\ESC[" + ++ (get_intensity_code intensity) + ++ ";3" + ++ (get_color_code col) + ++ "m"+ ++ str + ++ "\ESC[0;m"
+ src/TokenParser.hs view
@@ -0,0 +1,129 @@+{-----------------------------------------------------------------+ + (c) 2008-2009 Markus Dittrich + + This program is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public + License Version 3 as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ GNU General Public License Version 3 for more details.+ + You should have received a copy of the GNU General Public + License along with this program; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA.++--------------------------------------------------------------------}++-- | functionality related to parsing tokens+module TokenParser ( module Text.ParserCombinators.Parsec+ , float+ , identifier+ , integer+ , parens+ , lexer+ , naturalOrFloat+ , keywords+ , OperatorAction+ , operators+ , real_exp + , reservedOp+ , reserved+ , stringLiteral+ , variable ) where+++-- imports+import Text.ParserCombinators.Parsec +import qualified Text.ParserCombinators.Parsec.Token as PT+import Text.ParserCombinators.Parsec.Language (haskellDef+ , reservedOpNames+ , reservedNames )++-- local imports+import CalculatorState++++{- | some basic definitions for the calculator -}++-- | this is how valid variable names have to look like+variable :: CharParser CalcState String+variable = letter + >>= \first -> many alphaNum+ >>= \rest -> return $ [first] ++ rest++++-- | these are all the names and corresponding functions+-- of keywords we know about+type OperatorAction = (Double -> Double)++keywords :: [(String, OperatorAction)]+keywords = [ ("sqrt",sqrt)+ , ("exp",exp)+ , ("sin",sin)+ , ("cos",cos)+ , ("tan",tan)]+++operators :: [String]+operators = ["*","/","+","-","="]+++{- | prepare needed parsers from Parsec.Token -}++-- | function generating a token parser based on a +-- lexical parsers combined with a language record definition+lexer :: PT.TokenParser st+lexer = PT.makeTokenParser + ( haskellDef { reservedOpNames = operators+ , reservedNames = map fst keywords } )+++-- | token parser for parenthesis+parens :: CharParser st a -> CharParser st a+parens = PT.parens lexer+++-- | token parser for Integer+integer :: CharParser st Integer+integer = PT.integer lexer+++-- | token parser for Char+stringLiteral :: CharParser st String+stringLiteral = PT.stringLiteral lexer+++-- | token parser for Char+identifier :: CharParser st String+identifier = PT.stringLiteral lexer+++-- | token parser for Double+float :: CharParser st Double+float = PT.float lexer+++-- | token parser for Either Integer Double+naturalOrFloat :: CharParser st (Either Integer Double)+naturalOrFloat = PT.naturalOrFloat lexer+++-- | token parser for keywords+reservedOp :: String -> CharParser st ()+reservedOp = PT.reservedOp lexer+++-- | token parser for keywords+reserved :: String -> CharParser st ()+reserved = PT.reserved lexer+++-- | helper function for defining real powers+real_exp :: Double -> Double -> Double+real_exp a x = exp $ x * log a
+ src/husky.hs view
@@ -0,0 +1,65 @@+{-----------------------------------------------------------------+ + (c) 2008-2009 Markus Dittrich + + This program is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public + License Version 3 as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ GNU General Public License Version 3 for more details.+ + You should have received a copy of the GNU General Public + License along with this program; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA.++--------------------------------------------------------------------}++-- | main archy driver+module Main where+++-- imports+import System.Console.Readline++-- local imports+import CalculatorParser+import CalculatorState+import Messages+import PrettyPrint+import TokenParser+++-- | main+main :: IO ()+main = do+ show_greeting+ parse_it defaultCalcState+++-- | main parse function+parse_it :: CalcState -> IO ()+parse_it state = do++ -- prompt and get a line from stdin+ input <- readline $ color_string Red "husky> "+ case input of + Nothing -> parse_it state+ Just ":q" -> return ()+ Just line -> do++ addHistory line++ -- parse it+ case runParser calculator state "" line of+ Left er -> putStrLn $ "Error: " ++ (show er)+ Right (result, newState) -> + case result of+ Nothing -> parse_error line+ Just val -> husky_result >> putStrLn (show val)++ >> parse_it newState+
+ test/PropertyTest.hs view
@@ -0,0 +1,285 @@+{-----------------------------------------------------------------+ + (c) 2008-2009 Markus Dittrich + + This program is free software; you can redistribute it + and/or modify it under the terms of the GNU General Public + License Version 3 as published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful,+ but WITHOUT ANY WARRANTY; without even the implied warranty of+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ GNU General Public License Version 3 for more details.+ + You should have received a copy of the GNU General Public + License along with this program; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA.++--------------------------------------------------------------------}++-- | use QuickCheck to test some properties+module Main where+++-- import+import Control.Monad.Writer+import System.Exit+++-- local imports+import CalculatorParser+import CalculatorState+import PrettyPrint+import TokenParser+++-- | top level main routine +-- we use the Writer monad to capture the results for all tests +-- and then examine the results afterward+main :: IO ()+main = do+ let simple = execWriter $ test_driver defaultCalcState simpleTests+ status1 <- examine_output simple++ let failing = execWriter $ test_driver defaultCalcState failingTests+ status2 <- examine_output failing++ let vars = execWriter $ test_driver defaultCalcState variableTests+ status3 <- examine_output vars++ let status = status1 && status2 && status3+ if status == True then+ exitWith ExitSuccess+ else+ exitWith $ ExitFailure 1+ ++-- | helper function for examining the output of a test run+-- prints out the result for each test, collects the number+-- of successes/failures and returns True in case all tests+-- succeeded and False otherwise+examine_output :: [TestResult] -> IO Bool+examine_output = foldM examine_output_h True+ + where+ examine_output_h :: Bool -> TestResult -> IO Bool+ examine_output_h acc (TestResult status token target actual) = do+ if status == True then do+ putStr $ color_string Blue "["+ putStr $ color_string White "OK"+ putStr $ color_string Blue "] "+ putStr $ color_string Green " Successfully evaluated "+ putStrLn $ color_string Yellow token+ return $ acc && True+ else do+ putStr $ color_string Blue "["+ putStr $ color_string Red "TROUBLE"+ putStr $ color_string Blue "] "+ putStr $ color_string Green " Failed to evaluate "+ putStrLn $ color_string Yellow token+ putStrLn $ color_string Green "\t\texpected : " + ++ (convert target)+ putStrLn $ color_string Green "\t\tgot : " + ++ (convert actual)+ return False+ + where+ convert :: Maybe Double -> String+ convert x = case x of+ Nothing -> "Nothing"+ Just a -> show a+++-- | main test routine+test_driver :: CalcState -> [TestCase] -> Writer [TestResult] ()+test_driver _ [] = return ()+test_driver state (x:xs) = do++ let tok = fst x+ let expected = snd x+ case runParser calculator state "" tok of+ Left er -> tell [TestResult False tok expected Nothing]+ Right (result, newState) -> examine_result expected result tok+ + where+ -- NOTE: when we compare target and actual result we+ -- probably need to be more careful and can't use ==+ -- if we are dealing with Doubles!!!+ examine_result :: Maybe Double -> Maybe Double -> String + -> Writer [TestResult] ()+ examine_result target actual token = + if target == actual + then do+ tell [TestResult True token target actual]+ test_driver newState xs+ else do+ tell [TestResult False token target actual]+ test_driver newState xs++ +-- | our test results consist of a bool indicating success+-- or failure, the test token as well as the expected and+-- received result+data TestResult = TestResult { status :: Bool+ , token :: String+ , target :: Maybe Double+ , actual :: Maybe Double+ }++defaultResult :: TestResult+defaultResult = TestResult False "" Nothing Nothing+++-- | our test tokens are simple pairs of expressions and+-- their result+type TestCase = (String, Maybe Double)+++-- NOTE: For each "run" of test_driver we thread a common +-- calculator state to be able to test variable assignment+-- and use. Therefore, the order of which tests appear in+-- a [TestCase] may matter if variable definitions are involved.+-- I.e., think twice when changing the order, or keep order+-- dependend and independent sets in different lists +simpleTests :: [TestCase]+simpleTests = [ simpleTest1, simpleTest2, simpleTest3, simpleTest4+ , simpleTest5, simpleTest6, simpleTest7+ , simpleTest8, simpleTest9, simpleTest10, simpleTest11+ , simpleTest12, simpleTest13, simpleTest14]++-- list of simple tests+simpleTest1 :: TestCase+simpleTest1 = ("3+4", Just 7.0)++simpleTest2 :: TestCase+simpleTest2 = ("3*3", Just 9.0)++simpleTest3 :: TestCase+simpleTest3 = ("(3*3)+(3*4)", Just 21.0)++simpleTest4 :: TestCase+simpleTest4 = ("(3.0*3.0)+(3.0*4.0)", Just 21.0)++simpleTest5 :: TestCase+simpleTest5 = ("(3+3)*(9+8)", Just 102.0)++simpleTest6 :: TestCase+simpleTest6 = ("(3.0+3.0)*(9.0+8.0)", Just 102.0)++simpleTest7 :: TestCase+simpleTest7 = ("(((((((3.0+3.0)*(9.0+8.0)))))))", Just 102.0)++simpleTest8 :: TestCase+simpleTest8 = ("(((((((3.0+3.0)))))*(((((9.0+8.0)))))))", Just 102.0)++simpleTest9 :: TestCase+simpleTest9 = ("3+3*99.0", Just 300.0)++simpleTest10 :: TestCase+simpleTest10 = ("3+3*8+4*3*2+1*4*3+5", Just 68.0)++simpleTest11 :: TestCase+simpleTest11 = ("(3+3)*(8+4)*3*(2+1)*4*(3+5)", Just 20736.0)++simpleTest12 :: TestCase+simpleTest12 = (" 3 +3* 99.0", Just 300.0)++simpleTest13 :: TestCase+simpleTest13 = (" 3 + 3*8+4 *3 *2+1* 4*3+5 ", Just 68.0)++simpleTest14 :: TestCase+simpleTest14 = ("(3+3) *(8+4)*3 * (2+1 )*4*( 3+5)", Just 20736.0)++++-- a few tests that are failing +failingTests :: [TestCase]+failingTests = [ failingTest1, failingTest2, failingTest3+ , failingTest4, failingTest5, failingTest6+ , failingTest7, failingTest8, failingTest9+ , failingTest10, failingTest11, failingTest12 ]++-- list of failing tests+failingTest1 :: TestCase+failingTest1 = ("3+4b", Nothing)++failingTest2 :: TestCase+failingTest2 = ("3*a3", Nothing)++failingTest3 :: TestCase+failingTest3 = ("(3*3)B+(3*4)", Nothing)++failingTest4 :: TestCase+failingTest4 = ("(3.0*3.0)+3.0*4.0)", Nothing)++failingTest5 :: TestCase+failingTest5 = ("(3y3)*(9+8)", Nothing)++failingTest6 :: TestCase+failingTest6 = ("(3.0+3.0)*(9.0+8.0", Nothing)++failingTest7 :: TestCase+failingTest7 = ("(((((((3.0+3.0)*(9.0+8.0))))))", Nothing)++failingTest8 :: TestCase+failingTest8 = ("(((((((3.0+3.0))))*((((((9.0+8.0)))))))", Nothing)++failingTest9 :: TestCase+failingTest9 = ("a3+3*99.0", Nothing)++failingTest10 :: TestCase+failingTest10 = ("3+3*8+4*3++2+1*4*3+5", Nothing)++failingTest11 :: TestCase+failingTest11 = ("(3+3)**(8+4)*3*(2+1)*4*(3+5)", Nothing)++failingTest12 :: TestCase+failingTest12 = ("b", Nothing)+++-- a few tests involving variables+variableTests :: [TestCase]+variableTests = [ variableTest1, variableTest2, variableTest3+ , variableTest4, variableTest5, variableTest6+ , variableTest7, variableTest8, variableTest9 ]+{- , variableTest10, variableTest11, variableTest12 ] -}++-- list of failing tests+variableTest1 :: TestCase+variableTest1 = ("b = 4", Just 4)++variableTest2 :: TestCase+variableTest2 = ("3 * b ", Just 12)++variableTest3 :: TestCase+variableTest3 = ("(b*b)", Just 16)++variableTest4 :: TestCase+variableTest4 = ("a = 12", Just 12)++variableTest5 :: TestCase+variableTest5 = ("a * b", Just 48)++variableTest6 :: TestCase+variableTest6 = ("a - b * b", Just (-4))++variableTest7 :: TestCase+variableTest7 = ("3 * b - a", Just 0)++variableTest8 :: TestCase+variableTest8 = ("kjhdskfsd123hjksdf = a * b", Just 48)++variableTest9 :: TestCase+variableTest9 = ("(a*b) - kjhdskfsd123hjksdf", Just 0)++variableTest10 :: TestCase+variableTest10 = ("c = 2", Nothing) ++variableTest11 :: TestCase+variableTest11 = ("a-b-c + ( a + b + c ) + (a*a)", Just 168)++variableTest12 :: TestCase+variableTest12 = ("b^a - c", Just 16777214)++