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Cookbook/Compilers and interpreters

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(GHCi)
(General: use a less intimidating example)
 
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! Examples
 
! Examples
 
|-
 
|-
| compile a file, but don't link
+
| compiling and linking an executable
  +
| --make
  +
|<pre>ghc --make Main.hs --> Main</pre>
  +
|-
  +
| compiling without linking
 
| -c
 
| -c
|ghc -c Foo.hs
+
|<pre>ghc -c Foo.hs --> Foo.hi, Foo.o</pre>
  +
|-
  +
| generating Assembler code
  +
| -S
  +
|<pre>ghc -S Foo.hs --> Foo.hi, Foo.s</pre>
  +
|-
  +
| generating C code
  +
| -C
  +
|<pre>ghc -C Foo.hs --> Foo.hc, Foo.hi</pre>
  +
|-
  +
| linking files into an executable
  +
| -o
  +
|<pre>ghc -o test Foo.o Bar.o Baz.p --> test</pre>
 
|}
 
|}
   
 
== GHCi ==
 
== GHCi ==
  +
  +
=== General ===
   
 
{| class="wikitable"
 
{| class="wikitable"
Line 23: Line 25:
 
| :i
 
| :i
 
|<haskell>
 
|<haskell>
Prelude> :i Monad
+
Prelude> :i True
class Monad m where
+
data Bool = ... | True -- Defined in GHC.Bool
(>>=) :: m a -> (a -> m b) -> m b
 
(>>) :: m a -> m b -> m b
 
return :: a -> m a
 
fail :: String -> m a
 
-- Defined in GHC.Base
 
instance Monad Maybe -- Defined in Data.Maybe
 
instance Monad IO -- Defined in GHC.IOBase
 
instance Monad ((->) r) -- Defined in Control.Monad.Instances
 
instance Monad [] -- Defined in GHC.Base
 
 
</haskell>
 
</haskell>
 
|-
 
|-
Line 35: Line 37:
 
Prelude> :t length
 
Prelude> :t length
 
length :: [a] -> Int
 
length :: [a] -> Int
  +
</haskell>
  +
|-
  +
| loading a file
  +
| :l
  +
|<haskell>
  +
Prelude> :l Foo.hs
  +
[1 of 1] Compiling Foo ( Foo.hs, interpreted )
  +
Ok, modules loaded: Foo.
  +
</haskell>
  +
|-
  +
| reloading all loaded files
  +
| :r
  +
|<haskell>
  +
Prelude> :r
  +
</haskell>
  +
|}
  +
  +
=== Debugging ===
  +
  +
{| class="wikitable"
  +
|-
  +
! Problem
  +
! Solution
  +
! Examples
  +
|-
  +
| setting a break point
  +
| :break
  +
|<haskell>
  +
Prelude> :break 2 -- sets a break point in line 2
 
</haskell>
 
</haskell>
 
|}
 
|}

Latest revision as of 08:33, 25 January 2010

Contents

[edit] 1 GHC

Problem Solution Examples
compiling and linking an executable --make
ghc --make Main.hs               --> Main
compiling without linking -c
ghc -c Foo.hs                    --> Foo.hi, Foo.o
generating Assembler code -S
ghc -S Foo.hs                    --> Foo.hi, Foo.s
generating C code -C
ghc -C Foo.hs                    --> Foo.hc, Foo.hi
linking files into an executable -o
ghc -o test Foo.o Bar.o Baz.p    --> test

[edit] 2 GHCi

[edit] 2.1 General

Problem Solution Examples
checking a definition  :i
Prelude> :i True
data Bool = ... | True  -- Defined in GHC.Bool
checking a type  :t
Prelude> :t "Hello"
"Hello" :: [Char]
 
Prelude> :t length
length :: [a] -> Int
loading a file  :l
Prelude> :l Foo.hs
[1 of 1] Compiling Foo              ( Foo.hs, interpreted )
Ok, modules loaded: Foo.
reloading all loaded files  :r
Prelude> :r

[edit] 2.2 Debugging

Problem Solution Examples
setting a break point  :break
Prelude> :break 2    -- sets a break point in line 2

[edit] 3 Hugs

TODO