diff options
Diffstat (limited to 'prolog')
18 files changed, 149 insertions, 62 deletions
diff --git a/prolog/problems/denotational_semantics/algol_3/common.py b/prolog/problems/algol/algol_3/common.py index 8138484..415e1e5 100644 --- a/prolog/problems/denotational_semantics/algol_3/common.py +++ b/prolog/problems/algol/algol_3/common.py @@ -1,5 +1,5 @@ id = 176 -number = 83 +number = 10 visible = False facts = None @@ -10,8 +10,8 @@ algol(fun(S0,S,apply176([printout=[]|S0],S,Minstructs))) --> instructs176(Minstr) --> instr176(Minstr). instructs176(fun(S0,S, (apply176(S0,S1,Minstr), - apply176(S1,S,Minstructs)))) - --> + apply176(S1,S,Minstructs)))) + --> instr176(Minstr), instructs176(Minstructs). instr176(Massign) --> assign176(Massign). @@ -26,9 +26,9 @@ instr176(fun(S0,S, --> [while], cond176(Mcond), [do,begin], instructs176(Minstructs), [end]. -assign176(fun(S0,[X = Value|S1], +assign176(fun(S0,[X = Value|S1], (apply176(S0,Value,Mexpr), - del(X = _,S0,S1)))) + del(X = _,S0,S1)))) --> var176(X), [:=], expr176(Mexpr). @@ -47,32 +47,32 @@ expr176(fun(S,Value,eval(Expr,S,Value))) --> apply176(In, Out, fun(In, Out, Goals)) :- call(Goals). -loop176( State0, Mcond, _, State0) :- +loop176(State0, Mcond, _, State0) :- apply176( State0, false, Mcond), !. -loop176( S0, Mcond, MBody, S) :- +loop176(S0, Mcond, MBody, S) :- copy_term( MBody, MBodyCopy), apply176( S0, S1, MBody), loop176( S1, Mcond, MBodyCopy, S). -eval176( N, _, N) :- +eval176(N, _, N) :- number176( N), !. -eval176( X, State, Val) :- % A program variable - atom( X), !, - memb( X = Val, State). -eval176( E1 + E2, State, Val) :- !, - eval176( E1, State, V1), - eval176( E2, State, V2), +eval176(X, State, Val) :- % A program variable + atom(X), !, + memb(X = Val, State). +eval176(E1 + E2, State, Val) :- !, + eval176(E1, State, V1), + eval176(E2, State, V2), Val is V1 + V2. -eval176( E1 - E2, State, Val) :- !, - eval176( E1, State, V1), - eval176( E2, State, V2), +eval176(E1 - E2, State, Val) :- !, + eval176(E1, State, V1), + eval176(E2, State, V2), Val is V1 - V2. -eval176( E1 * E2, State, Val) :- !, - eval176( E1, State, V1), - eval176( E2, State, V2), +eval176(E1 * E2, State, Val) :- !, + eval176(E1, State, V1), + eval176(E2, State, V2), Val is V1 * V2. -eval176( E1 / E2, State, Val) :- !, - eval176( E1, State, V1), - eval176( E2, State, V2), +eval176(E1 / E2, State, Val) :- !, + eval176(E1, State, V1), + eval176(E2, State, V2), Val is V1 / V2. ''' diff --git a/prolog/problems/denotational_semantics/algol_3/en.py b/prolog/problems/algol/algol_3/en.py index 3b91a47..3b91a47 100644 --- a/prolog/problems/denotational_semantics/algol_3/en.py +++ b/prolog/problems/algol/algol_3/en.py diff --git a/prolog/problems/denotational_semantics/algol_for_3/common.py b/prolog/problems/algol/algol_for_3/common.py index 1107308..654d478 100644 --- a/prolog/problems/denotational_semantics/algol_for_3/common.py +++ b/prolog/problems/algol/algol_for_3/common.py @@ -1,5 +1,5 @@ id = 178 -number = 85 +number = 30 visible = False facts = None @@ -10,8 +10,8 @@ algol_for(fun(S0,S,apply178([printout=[]|S0],S,Minstructs))) --> instructs178(Minstr) --> instr178(Minstr). instructs178(fun(S0,S, (apply178(S0,S1,Minstr), - apply178(S1,S,Minstructs)))) - --> + apply178(S1,S,Minstructs)))) + --> instr178(Minstr), instructs178(Minstructs). instr178(Massign) --> assign178(Massign). @@ -31,9 +31,9 @@ instr178(fun(S0, S, --> [for], assign178(Minit), [&], cond178(Mcond), [&], assign178(Mstep), [do, begin], instructs178(Mbody), [end]. -assign178(fun(S0,[X = Value|S1], +assign178(fun(S0,[X = Value|S1], (apply178(S0,Value,Mexpr), - del(X = _,S0,S1)))) + del(X = _,S0,S1)))) --> var178(X), [:=], expr178(Mexpr). @@ -54,7 +54,7 @@ apply178(In, Out, fun(In, Out, Goals)) :- loop178( State0, Mcond, _, State0) :- apply178( State0, false, Mcond), !. -loop178( S0, Mcond, MBody, S) :- +loop178( S0, Mcond, MBody, S) :- copy_term( MBody, MBodyCopy), apply178( S0, S1, MBody), loop178( S1, Mcond, MBodyCopy, S). @@ -71,8 +71,8 @@ for178(S0, Mcond, Mstep, Mbody, S) :- eval178( N, _, N) :- number178( N), !. eval178( X, State, Val) :- % A program variable - atom( X), !, - memb( X = Val, State). + atom( X), !, + memb( X = Val, State). eval178( E1 + E2, State, Val) :- !, eval178( E1, State, V1), eval178( E2, State, V2), diff --git a/prolog/problems/denotational_semantics/algol_for_3/en.py b/prolog/problems/algol/algol_for_3/en.py index 2f46d36..2f46d36 100644 --- a/prolog/problems/denotational_semantics/algol_for_3/en.py +++ b/prolog/problems/algol/algol_for_3/en.py diff --git a/prolog/problems/denotational_semantics/algol_if_3/common.py b/prolog/problems/algol/algol_if_3/common.py index d98d2d2..6678743 100644 --- a/prolog/problems/denotational_semantics/algol_if_3/common.py +++ b/prolog/problems/algol/algol_if_3/common.py @@ -1,5 +1,5 @@ id = 177 -number = 84 +number = 20 visible = False facts = None @@ -10,8 +10,8 @@ algol_if(fun(S0,S,apply177([printout=[]|S0],S,Minstructs))) --> instructs177(Minstr) --> instr177(Minstr). instructs177(fun(S0,S, (apply177(S0,S1,Minstr), - apply177(S1,S,Minstructs)))) - --> + apply177(S1,S,Minstructs)))) + --> instr177(Minstr), instructs177(Minstructs). instr177(Massign) --> assign177(Massign). @@ -33,9 +33,9 @@ instr177(fun(S0, S, --> [if], cond177(Mcond), [then], instructs177(MinstructsA), [else], instructs177(MinstructsB), [end]. -assign177(fun(S0,[X = Value|S1], +assign177(fun(S0,[X = Value|S1], (apply177(S0,Value,Mexpr), - del(X = _,S0,S1)))) + del(X = _,S0,S1)))) --> var177(X), [:=], expr177(Mexpr). @@ -64,8 +64,8 @@ loop177( S0, Mcond, MBody, S) :- eval177( N, _, N) :- number177( N), !. eval177( X, State, Val) :- % A program variable - atom( X), !, - memb( X = Val, State). + atom( X), !, + memb( X = Val, State). eval177( E1 + E2, State, Val) :- !, eval177( E1, State, V1), eval177( E2, State, V2), diff --git a/prolog/problems/denotational_semantics/algol_if_3/en.py b/prolog/problems/algol/algol_if_3/en.py index bd5b732..bd5b732 100644 --- a/prolog/problems/denotational_semantics/algol_if_3/en.py +++ b/prolog/problems/algol/algol_if_3/en.py diff --git a/prolog/problems/algol/common.py b/prolog/problems/algol/common.py new file mode 100644 index 0000000..2885432 --- /dev/null +++ b/prolog/problems/algol/common.py @@ -0,0 +1,2 @@ +id = 1001 +number = 12 diff --git a/prolog/problems/algol/en.py b/prolog/problems/algol/en.py new file mode 100644 index 0000000..340eb4a --- /dev/null +++ b/prolog/problems/algol/en.py @@ -0,0 +1,2 @@ +name = 'Mini-ALGOL' +description = 'Syntax and semantics for a simple imperative programming language.' diff --git a/prolog/problems/denotational_semantics/en.py b/prolog/problems/denotational_semantics/en.py index 418b1e7..a245e15 100644 --- a/prolog/problems/denotational_semantics/en.py +++ b/prolog/problems/denotational_semantics/en.py @@ -1,2 +1,2 @@ name = 'Denotational semantics' -description = 'Adding meaning to grammars, writing a simple compiler for Algol-like programming language.' +description = 'Adding meaning to grammars for list-processing languages.' diff --git a/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py b/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py index 71875d4..c5b69da 100644 --- a/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py +++ b/prolog/problems/denotational_semantics/prog_8puzzle_2/common.py @@ -1,6 +1,6 @@ id = 172 -number = 81 -visible = False +number = 30 +visible = True facts = None solution = '''\ @@ -14,3 +14,15 @@ instr172 --> [right]. instr172 --> [up]. instr172 --> [down]. ''' + +initial = '''\ +prog_8puzzle --> [begin], instructs, [end]. + +instructs --> instr. +instructs --> instr, instructs. + +instr --> [left]. +instr --> [right]. +instr --> [up]. +instr --> [down]. +''' diff --git a/prolog/problems/denotational_semantics/prog_8puzzle_2/en.py b/prolog/problems/denotational_semantics/prog_8puzzle_2/en.py index 7969ba4..a91e22e 100644 --- a/prolog/problems/denotational_semantics/prog_8puzzle_2/en.py +++ b/prolog/problems/denotational_semantics/prog_8puzzle_2/en.py @@ -2,8 +2,17 @@ name = 'prog_8puzzle/2' slug = '8-puzzle-solving language' description = '''\ -<p>Write a DCG for solving 8-puzzles. The first symbol in every word is <code>[begin]</code>, followed by any sequence of "instruction" symbols from the set {<code>left</code>, <code>right</code>, <code>up</code>, <code>down</code>}, and finally <code>[end]</code>. The starting symbol should be named <code>prog_8puzzle</code>.</p> +<p> +Write a DCG for solving 8-puzzles. The first symbol in every word is +<code>[begin]</code>, followed by any sequence of "instruction" symbols from +the set {<code>left</code>, <code>right</code>, <code>up</code>, +<code>down</code>}, and finally <code>[end]</code>. The starting symbol should +be named <code>prog_8puzzle</code>. +</p> -<p>Example words: <code>[begin,left,down,right,end]</code>, <code>[begin,down,end]</code>.</p>''' +<p> +Example words: <code>[begin,left,down,right,end]</code>, <code>[begin,down,end]</code>. +</p> +''' hint = {} diff --git a/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py b/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py index 13debcf..0e0d048 100644 --- a/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py +++ b/prolog/problems/denotational_semantics/prog_8puzzle_3/common.py @@ -1,6 +1,6 @@ id = 173 -number = 82 -visible = False +number = 40 +visible = True facts = 'denotational_semantics_aux__predicates' solution = '''\ diff --git a/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py b/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py index 51aa81a..7a94c74 100644 --- a/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py +++ b/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py @@ -2,17 +2,38 @@ name = 'prog_8puzzle/3' slug = '8-puzzle-solving language with semantics' description = '''\ -<p>Write a DCG for solving 8-puzzles. The syntax for this language should be the same as in the previous exercise: the first symbol in every word is <code>[begin]</code>, followed by any sequence of "instruction" symbols from the set {<code>left</code>, <code>right</code>, <code>up</code>, <code>down</code>}, and finally <code>[end]</code>. The starting symbol should be named <code>prog_8puzzle</code>.</p> +<p> +Write a DCG for solving 8-puzzles. The syntax for this language should be the +same as in the previous exercise: the first symbol in every word is +<code>[begin]</code>, followed by any sequence of "instruction" symbols from +the set {<code>left</code>, <code>right</code>, <code>up</code>, +<code>down</code>}, and finally <code>[end]</code>. The starting symbol should +be named <code>prog_8puzzle</code>. +</p> -<p>The meaning of a word (program) in this language has the form <code>In-->Out</code>, mapping from input to output states. Each state is a (permuted) list of numbers from 0 to 8, where 0 stands for the empty square and other numbers for the corresponding tiles. The first three numbers in the list correspond to the top row of the 8-puzzle, the next three numbers to the middle row, and the last three numbers to the last row. The meaning of instructions <code>left</code>, <code>right</code>, <code>up</code> and <code>down</code> is to move the blank tile in the given direction.</p> +<p> +The meaning of a word (program) in this language has the form +<code>In-->Out</code>, mapping from input to output states. Each state is a +(permuted) list of numbers from 0 to 8, where 0 stands for the empty square and +other numbers for the corresponding tiles. The first three numbers in the list +correspond to the top row of the 8-puzzle, the next three numbers to the middle +row, and the last three numbers to the last row. The meaning of instructions +<code>left</code>, <code>right</code>, <code>up</code> and <code>down</code> is +to move the blank tile in the given direction. +</p> <pre> ?- prog_8puzzle([0,1,2,3,4,5,6,7,8]-->Out, [begin,down,right,end], []). Out = [3,1,2,4,0,5,6,7,8]. </pre> -<p>Helper predicates (already defined):<br /> - <code>findblank(List,I)</code> returns the 1-based index <code>I</code> of the element 0 in <code>List</code><br /> - <code>swap(List,I,J,NewList)</code> creates <code>NewList</code> by swapping elements <code>I</code> and <code>J</code> in <code>List</code></p>''' +<p> +Helper predicates (already defined): +</p> +<ul> +<li><code>findblank(List,I)</code> returns the 1-based index <code>I</code> of the element 0 in <code>List</code></li> +<li><code>swap(List,I,J,NewList)</code> creates <code>NewList</code> by swapping elements <code>I</code> and <code>J</code> in <code>List</code></li> +</ul> +''' hint = {} diff --git a/prolog/problems/denotational_semantics/prog_listswap_2/common.py b/prolog/problems/denotational_semantics/prog_listswap_2/common.py index e08337d..b3da01f 100644 --- a/prolog/problems/denotational_semantics/prog_listswap_2/common.py +++ b/prolog/problems/denotational_semantics/prog_listswap_2/common.py @@ -1,10 +1,10 @@ id = 175 -number = 79 -visible = False +number = 10 +visible = True facts = None solution = '''\ -program --> [begin], instructs175, [end]. +prog_listswap --> [begin], instructs175, [end]. instructs175 --> instr175. instructs175 --> instr175, instructs175. @@ -13,3 +13,15 @@ instr175 --> [left]. instr175 --> [right]. instr175 --> [swap]. ''' + +# nothing to do in this exercise +initial = '''\ +prog_listswap --> [begin], instructs, [end]. + +instructs --> instr. +instructs --> instr, instructs. + +instr --> [left]. +instr --> [right]. +instr --> [swap]. +''' diff --git a/prolog/problems/denotational_semantics/prog_listswap_2/en.py b/prolog/problems/denotational_semantics/prog_listswap_2/en.py index ad0e9b1..89907bd 100644 --- a/prolog/problems/denotational_semantics/prog_listswap_2/en.py +++ b/prolog/problems/denotational_semantics/prog_listswap_2/en.py @@ -2,9 +2,17 @@ name = 'prog_listswap/2' slug = 'list-manipulation language' description = '''\ -<p>Write a DCG for manipulating list elements. The first symbol in every word is <code>[begin]</code>, followed by any sequence of "instruction" symbols from the set {<code>left</code>, <code>right</code>, <code>swap</code>}, and finally <code>[end]</code>. The starting symbol should be named <code>prog_listswap</code>.</p> +<p> +Write a DCG for manipulating list elements. The first symbol in every word is +<code>[begin]</code>, followed by any sequence of "instruction" symbols from +the set {<code>left</code>, <code>right</code>, <code>swap</code>}, and finally +<code>[end]</code>. The starting symbol should be named +<code>prog_listswap</code>. +</p> -<p>Example words: <code>[begin,right,swap,end]</code>, <code>[begin,right,left,end]</code>.</p> +<p> +Example words: <code>[begin,right,swap,end]</code>, <code>[begin,right,left,end]</code>. +</p> ''' hint = {} diff --git a/prolog/problems/denotational_semantics/prog_listswap_3/common.py b/prolog/problems/denotational_semantics/prog_listswap_3/common.py index dfa7c86..3ad93e8 100644 --- a/prolog/problems/denotational_semantics/prog_listswap_3/common.py +++ b/prolog/problems/denotational_semantics/prog_listswap_3/common.py @@ -1,6 +1,6 @@ id = 174 -number = 80 -visible = False +number = 20 +visible = True facts = 'denotational_semantics_aux__predicates' solution = '''\ diff --git a/prolog/problems/denotational_semantics/prog_listswap_3/en.py b/prolog/problems/denotational_semantics/prog_listswap_3/en.py index b8e9769..e275335 100644 --- a/prolog/problems/denotational_semantics/prog_listswap_3/en.py +++ b/prolog/problems/denotational_semantics/prog_listswap_3/en.py @@ -2,16 +2,37 @@ name = 'prog_listswap/3' slug = 'list-manipulation language with semantics' description = '''\ -<p>Write a DCG for manipulating list elements. The first symbol in every word is <code>[begin]</code>, followed by any sequence of "instruction" symbols from the set {<code>left</code>, <code>right</code>, <code>swap</code>}, and finally <code>[end]</code>. The starting symbol should be named <code>prog_listswap</code>.</p> +<p> +Write a DCG for manipulating list elements. The first symbol in every word is +<code>[begin]</code>, followed by any sequence of "instruction" symbols from +the set {<code>left</code>, <code>right</code>, <code>swap</code>}, and finally +<code>[end]</code>. The starting symbol should be named +<code>prog_listswap</code>. +</p> -<p>The meaning of a word (program) in this language has the form <code>In-->Out</code>, mapping from input to output lists. Besides the list contents, internal states also hold the current cursor position. The <code>left</code> and <code>right</code> instructions move the cursor one step in the given direction, while the <code>swap</code> instruction swaps the element under the cursor with its left neighbor (and fails if cursor is currently pointing to the first element of the list).</p> +<p> +The meaning of a word (program) in this language has the form +<code>In-->Out</code>, mapping from input to output lists. Besides the list +contents, internal states also hold the current cursor position. The +<code>left</code> and <code>right</code> instructions move the cursor one step +in the given direction, while the <code>swap</code> instruction swaps the +element under the cursor with its left neighbor (and fails if cursor is +currently pointing to the first element of the list). +</p> <pre> ?- prog_listswap([1,2,3,4]-->Out, [begin,right,swap,end], []). Out = [2,1,3,4]. </pre> -<p>Helper predicate (already defined):<br /> - <code>swap(List,I,NewList)</code> creates <code>NewList</code> by swapping the <code>I</code>th element with its left neighbor in <code>List</code></p>''' +<p> +Helper predicates (already defined): +</p> +<ul> +<li><code>swap(List,I,NewList)</code> creates <code>NewList</code> by +swapping the <code>I</code>th element with its left neighbor in +<code>List</code></li> +</ul> +''' hint = {} diff --git a/prolog/problems/denotational_semantics/sl.py b/prolog/problems/denotational_semantics/sl.py index d0e8f1e..6a7f823 100644 --- a/prolog/problems/denotational_semantics/sl.py +++ b/prolog/problems/denotational_semantics/sl.py @@ -1,2 +1,2 @@ name = 'Denotacijske semantike' -description = 'Dodajanje pomena gramatikam, pisanje preprostega prevajalnika za programski jezik algolskega tipa.' +description = 'Dodajanje pomena gramatikam jezikov za delo s seznami.' |