Week11

cis194/week11/haotian/.gitignore

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+.stack-work/
+haotian.cabal
+*~

cis194/week11/haotian/ChangeLog.md

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+# Changelog for haotian
+
+## Unreleased changes

cis194/week11/haotian/LICENSE

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+Copyright Author name here (c) 2019
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Author name here nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cis194/week11/haotian/README.md

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+# haotian

cis194/week11/haotian/Setup.hs

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+import Distribution.Simple
+main = defaultMain

cis194/week11/haotian/app/Main.hs

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+module Main where
+
+import Lib
+
+main :: IO ()
+main = someFunc

cis194/week11/haotian/package.yaml

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+name:                haotian
+version:             0.1.0.0
+github:              "githubuser/haotian"
+license:             BSD3
+author:              "Author name here"
+maintainer:          "[email protected]"
+copyright:           "2019 Author name here"
+
+extra-source-files:
+- README.md
+- ChangeLog.md
+
+# Metadata used when publishing your package
+# synopsis:            Short description of your package
+# category:            Web
+
+# To avoid duplicated efforts in documentation and dealing with the
+# complications of embedding Haddock markup inside cabal files, it is
+# common to point users to the README.md file.
+description:         Please see the README on GitHub at <https://github.com/githubuser/haotian#readme>
+
+dependencies:
+- base >= 4.7 && < 5
+
+library:
+  source-dirs: src
+
+executables:
+  haotian-exe:
+    main:                Main.hs
+    source-dirs:         app
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - haotian
+
+tests:
+  haotian-test:
+    main:                Spec.hs
+    source-dirs:         test
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - haotian

cis194/week11/haotian/src/AParser.hs

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+module AParser (Parser, runParser, satisfy, char, posInt) where
+
+import           Control.Applicative
+import           Data.Char
+
+newtype Parser a = Parser { runParser :: String -> Maybe (a, String) }
+
+satisfy :: (Char -> Bool) -> Parser Char
+satisfy p = Parser f
+  where
+    f [] = Nothing
+    f (x:xs)
+        | p x       = Just (x, xs)
+        | otherwise = Nothing
+
+char :: Char -> Parser Char
+char c = satisfy (== c)
+
+posInt :: Parser Integer
+posInt = Parser f
+  where
+    f xs
+      | null ns   = Nothing
+      | otherwise = Just (read ns, rest)
+      where (ns, rest) = span isDigit xs
+
+inParser f = Parser . f . runParser
+
+first :: (a -> b) -> (a,c) -> (b,c)
+first f (x,y) = (f x, y)
+
+instance Functor Parser where
+  fmap = inParser . fmap . fmap . first
+
+instance Applicative Parser where
+  pure a = Parser (\s -> Just (a, s))
+  (Parser fp) <*> xp = Parser $ \s ->
+    case fp s of
+      Nothing     -> Nothing
+      Just (f,s') -> runParser (f <$> xp) s'
+
+instance Alternative Parser where
+  empty = Parser (const Nothing)
+  Parser p1 <|> Parser p2 = Parser $ liftA2 (<|>) p1 p2

cis194/week11/haotian/src/Lib.hs

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+module Lib
+    ( someFunc
+    ) where
+
+someFunc :: IO ()
+someFunc = putStrLn "someFunc"

cis194/week11/haotian/src/SExpr.hs

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+{- CIS 194 HW 11
+   due Monday, 8 April
+-}
+
+module SExpr where
+
+import AParser
+import Control.Applicative
+import Data.Char
+
+------------------------------------------------------------
+--  1. Parsing repetitions
+------------------------------------------------------------
+
+zeroOrMore :: Parser a -> Parser [a]
+zeroOrMore p = oneOrMore p <|> pure []
+
+oneOrMore :: Parser a -> Parser [a]
+oneOrMore p = (:) <$> p <*> zeroOrMore p
+
+------------------------------------------------------------
+--  2. Utilities
+------------------------------------------------------------
+
+spaces :: Parser String
+spaces = (:) <$> satisfy isSpace <*> spaces <|> pure ""
+
+ident :: Parser String
+ident = (:) <$> satisfy isAlpha <*> zeroOrMore (satisfy isAlphaNum)
+
+------------------------------------------------------------
+--  3. Parsing S-expressions
+------------------------------------------------------------
+
+-- An "identifier" is represented as just a String; however, only
+-- those Strings consisting of a letter followed by any number of
+-- letters and digits are valid identifiers.
+type Ident = String
+
+-- An "atom" is either an integer value or an identifier.
+data Atom = N Integer | I Ident
+  deriving Show
+
+-- An S-expression is either an atom, or a list of S-expressions.
+data SExpr = A Atom
+           | Comb [SExpr]
+  deriving Show
+
+parseAtom :: Parser Atom
+parseAtom = (I <$> ident) <|> (N <$> posInt)
+
+withSpaces :: Parser a -> Parser a
+withSpaces p = spaces *> p <* spaces
+
+withParens :: Parser a -> Parser a
+withParens p = char '(' *> p <* char ')'
+
+parseSExpr :: Parser SExpr
+parseSExpr = withSpaces $
+  (A <$> parseAtom) <|> withParens (Comb <$> oneOrMore parseSExpr)

cis194/week11/haotian/stack.yaml

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+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/yaml_configuration/
+
+# Resolver to choose a 'specific' stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# resolver: lts-3.5
+# resolver: nightly-2015-09-21
+# resolver: ghc-7.10.2
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# resolver: ./custom-snapshot.yaml
+# resolver: https://example.com/snapshots/2018-01-01.yaml
+resolver: lts-14.11
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+#   subdirs:
+#   - auto-update
+#   - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the resolver.
+# These entries can reference officially published versions as well as
+# forks / in-progress versions pinned to a git hash. For example:
+#
+# extra-deps:
+# - acme-missiles-0.3
+# - git: https://github.com/commercialhaskell/stack.git
+#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#
+# extra-deps: []
+
+# Override default flag values for local packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=2.1"
+#
+# Override the architecture used by stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor

cis194/week11/haotian/stack.yaml.lock

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+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/lock_files
+
+packages: []
+snapshots:
+- completed:
+    size: 524786
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/14/11.yaml
+    sha256: 088bb91b545839510a41ae92fa5feb36779ef3529571a42bd12b9f51eb89ded3
+  original: lts-14.11

cis194/week11/haotian/test/Spec.hs

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+main :: IO ()
+main = putStrLn "Test suite not yet implemented"