Added list comprehensions and standard List, Option, Func, Pair, and Triple library (#105)

* Added standard List library and list comprehensions

Added List library.

Flatmaps WIP

Fixed dependency in flat_map

fcode generation

Updated tests to use custom list lib

Added comprehension test

Added stdlib

sanity

Test

* Extended stdlib for lists. Added error message for redefinition of stdlibx

* Fixed type template

* Improved stdlib

* More functions

* Fixed cyclic includes

* Refixed imports and added few tests

* Added fail test

* Undelete removed type spec

* Remove typo

* Fix iter function

* Fixed typo

* Added if guards and let statements in list comp

* Added more fail tests

* Option stliv

* 2 and 3 tuple stdlib

* Updated stdlib to new syntax. Added recursor and changed all/any functions

* Fixed performance issues. Changed include management

* Fixed hash type

test/contracts/cyclic_include.aes

@@ -0,0 +1,4 @@
+include "cyclic_include_forth.aes"
+
+contract CI =
+  entrypoint ci() = Back.back() + Forth.forth()

test/contracts/cyclic_include_back.aes

@@ -0,0 +1,4 @@
+include "cyclic_include_forth.aes"
+
+namespace Back =
+  function back() = 2

test/contracts/cyclic_include_forth.aes

@@ -0,0 +1,4 @@
+include "cyclic_include_back.aes"
+
+namespace Forth =
+  function forth() = 3

test/contracts/deadcode.aes

@@ -1,5 +1,5 @@
 
-namespace List =
+namespace MyList =
 
   function map1(f : 'a => 'b, xs : list('a)) =
     switch(xs)
@@ -14,8 +14,8 @@ namespace List =
 contract Deadcode =
 
   entrypoint inc1(xs : list(int)) : list(int) =
-    List.map1((x) => x + 1, xs)
+    MyList.map1((x) => x + 1, xs)
 
   entrypoint inc2(xs : list(int)) : list(int) =
-    List.map1((x) => x + 1, xs)
+    MyList.map1((x) => x + 1, xs)
 

test/contracts/double_include.aes

@@ -0,0 +1,7 @@
+include "included.aes"
+include "../contracts/included.aes"
+
+contract Include =
+  entrypoint foo() =
+    Included.foo()
+

test/contracts/list_comp.aes

@@ -0,0 +1,23 @@
+contract ListComp =
+
+    entrypoint sample1() = [1,2,3]
+    entrypoint sample2() = [4,5]
+
+    entrypoint l1() = [x | x <- sample1()]
+    entrypoint l1_true() = [1,2,3]
+
+    entrypoint l2() = [x + y | x <- sample1(), y <- sample2()]
+    entrypoint l2_true() = [5,6,6,7,7,8]
+
+    entrypoint l3() = [x ++ y | x <- [[":)"] | x <- [1,2]]
+                              , y <- [[":("]]]  
+    entrypoint l3_true() = [[":)", ":("], [":)", ":("]]
+
+    entrypoint l4() = [(a, b, c) | let is_pit(a, b, c) = a*a + b*b == c*c
+                                 , let base = [1,2,3,4,5,6,7,8,9,10]
+                                 , a <- base
+                                 , b <- base, if (b >= a)
+                                 , c <- base, if (c >= b)
+                                 , if (is_pit(a, b, c))
+                                 ]
+    entrypoint l4_true() = [(3, 4, 5), (6, 8, 10)]

test/contracts/list_comp_bad_shadow.aes

@@ -0,0 +1,2 @@
+contract BadComp =
+  entrypoint failing() = [x + 1 | x <- [1,2,3], let x = "XD"]

test/contracts/list_comp_if_not_bool.aes

@@ -0,0 +1,2 @@
+contract BadComp =
+  entrypoint failing() = [x | x <- [], if (3)] 

test/contracts/list_comp_not_a_list.aes

@@ -0,0 +1,2 @@
+contract ListCompBad =
+  entrypoint failing() = [x | x <- 1]

test/contracts/manual_stdlib_include.aes

@@ -0,0 +1,7 @@
+// This contract should be compiled with no_implicit_stdlib option.
+// It should include Lists.aes implicitly however, because Option.aes depends on it.
+include "Option.aes"
+
+contract Test =
+  entrypoint i_should_build() =
+    List.is_empty(Option.to_list(None))

test/contracts/multi_sig.aes

@@ -28,8 +28,8 @@ contract MultiSig =
       let n = length(owners) + 1
       { nRequired  = nRequired,
         nOwners    = n,
-        owners     = Map.from_list(List.zip([1..n], caller() :: owners)),
-        ownerIndex = Map.from_list(List.zip(caller() :: owners, [1..n])) }
+        owners     = Map.from_list(MyList.zip([1..n], caller() :: owners)),
+        ownerIndex = Map.from_list(MyList.zip(caller() :: owners, [1..n])) }
 
     function lookup(map, key) =
       switch(Map.get(key, map))

test/contracts/nodeadcode.aes

@@ -1,5 +1,5 @@
 
-namespace List =
+namespace MyList =
 
   function map1(f : 'a => 'b, xs : list('a)) =
     switch(xs)
@@ -14,8 +14,8 @@ namespace List =
 contract Deadcode =
 
   entrypoint inc1(xs : list(int)) : list(int) =
-    List.map1((x) => x + 1, xs)
+    MyList.map1((x) => x + 1, xs)
 
   entrypoint inc2(xs : list(int)) : list(int) =
-    List.map2((x) => x + 1, xs)
+    MyList.map2((x) => x + 1, xs)
 

test/contracts/reason/voting.re

@@ -47,7 +47,7 @@ module Voting : Voting = {
   let init(proposalNames: args): state =
     { chairPerson: caller(),
       voters:      AddrMap.empty,
-      proposals:   List.map((name) => {name: name, voteCount: 0}, proposalNames)
+      proposals:   MyList.map((name) => {name: name, voteCount: 0}, proposalNames)
     };
 
   /* Boilerplate */
@@ -73,7 +73,7 @@ module Voting : Voting = {
   };
 
   let addVote(candidate, weight) = {
-    let proposal = List.nth(state().proposals, candidate);
+    let proposal = MyList.nth(state().proposals, candidate);
     proposal.voteCount = proposal.voteCount + weight;
   };
 
@@ -121,6 +121,6 @@ module Voting : Voting = {
 
   /* const */
   let currentTally() =
-    List.map((p) => (p.name, p.voteCount), state().proposals);
+    MyList.map((p) => (p.name, p.voteCount), state().proposals);
 
 }

test/contracts/reason/voting_test.re

@@ -13,7 +13,7 @@ open Voting;
 
 let print_tally() = {
   let tally = call(other, () => currentTally());
-  List.map(((name, count)) => Printf.printf("%s: %d\n", name, count), tally);
+  MyList.map(((name, count)) => Printf.printf("%s: %d\n", name, count), tally);
   let winner = call(other, () => winnerName());
   Printf.printf("Winner: %s\n", winner);
 };

test/contracts/stdlib_include.aes

@@ -0,0 +1,3 @@
+contract StdInc =
+  entrypoint test() = List.map((x) => Func.id(x), [1,2,3,4])
+

test/contracts/voting.aes

@@ -36,7 +36,7 @@ contract Voting =
   function init(proposalNames: list(string)): state =
     { chairPerson = caller(),
       voters      = Map.empty,
-      proposals   = List.map((name) => {name = name, voteCount = 0}, proposalNames) }
+      proposals   = MyList.map((name) => {name = name, voteCount = 0}, proposalNames) }
 
   function initVoter() = { weight = 1, vote = NotVoted}
 
@@ -53,7 +53,7 @@ contract Voting =
       _            => delegate
 
   function addVote(candidate, weight) =
-    let proposal = List.nth(state.proposals, candidate)
+    let proposal = MyList.nth(state.proposals, candidate)
     proposal{ voteCount = proposal.voteCount + weight }
 
   function delegateVote(delegateTo: address, weight: uint) =
@@ -93,5 +93,5 @@ contract Voting =
 
   // const
   function currentTally() =
-    List.map((p) => (p.name, p.voteCount), state.proposals)
+    MyList.map((p) => (p.name, p.voteCount), state.proposals)