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Merge branch 'master' into library-use-case

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This commit is contained in:
Nicolas Luck
2024-01-26 17:21:47 +01:00
parent cb014095ad 6fe8f64835
commit 7e973a6da6
131 changed files with 2234 additions and 1352 deletions
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5
.github/workflows/ci.yml vendored
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@@ -63,10 +63,11 @@ jobs:
# Build and test.
- name: Build library
run: cargo rustc --lib --target ${{ matrix.target }} ${{ matrix.args }} --verbose
continue-on-error: ${{ contains(matrix.target,'wasm32') }} # allow wasm builds to fail tests for now
run: cargo build --all-targets --target ${{ matrix.target }} ${{ matrix.args }} --verbose
- name: Test
continue-on-error: ${{ contains(matrix.target,'wasm32') }} # allow wasm builds to fail tests for now
run: cargo test --target ${{ matrix.target }} ${{ matrix.args }} --all --verbose
run: cargo test --target ${{ matrix.target }} ${{ matrix.args }} --all
# On stable rust builds, build a binary and publish as a github actions
# artifact. These binaries could be useful for testing the pipeline but

908
Cargo.lock generated
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File diff suppressed because it is too large Load Diff

10
Cargo.toml
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@@ -71,6 +71,7 @@ bytes = "1"
dashu = "0.4.0"
num-order = { version = "1.2.0" }
rand = "0.8.5"
ring = { version = "0.17.5", features = ["wasm32_unknown_unknown_js"] }
serde_json = "1.0.95"
serde = "1.0.159"
@@ -83,7 +84,7 @@ ctrlc = { version = "3.2.2", optional = true }
rustyline = { version = "12.0.0", optional = true }
native-tls = { version = "0.2.4", optional = true }
warp = { version = "=0.3.5", features = ["tls"], optional = true }
reqwest = { version = "0.11.18", features = ["blocking"], optional = true }
reqwest = { version = "0.11.18", optional = true }
tokio = { version = "1.28.2", features = ["full"] }
[target.'cfg(target_arch = "wasm32")'.dependencies]
@@ -104,12 +105,6 @@ serde-wasm-bindgen = "0.5"
web-sys = { version = "0.3", features = ["Document", "Window", "Element", "Performance"] }
js-sys = "0.3"
[target.'cfg(target_os = "wasi")'.dependencies]
ring-wasi = { version = "0.16.25" }
[target.'cfg(not(target_os = "wasi"))'.dependencies]
ring = { version = "0.16.13" }
[dev-dependencies]
assert_cmd = "1.0.3"
predicates-core = "1.0.2"
@@ -117,6 +112,7 @@ maplit = "1.0.2"
serial_test = "2.0.0"
iai-callgrind = { git = "https://github.com/iai-callgrind/iai-callgrind.git", rev = "c77bc3c83d7f4e976cc42d4597236a8db259e772" }
criterion = "0.5.1"
trycmd = "0.14.19"
[target.'cfg(not(target_os = "windows"))'.dev-dependencies]
pprof = { version = "0.13.0", features = ["criterion", "flamegraph"] }

29
README.md
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@@ -316,6 +316,35 @@ To quit Scryer Prolog, use the standard predicate `halt/0`:
?- halt.
```
### Starting Scryer Prolog
Scryer Prolog can be started from the command line by specifying
options, files and additional arguments. All components are optional:
<pre>
scryer-prolog [OPTIONS] [FILES] [-- ARGUMENTS]
</pre>
The supported options are:
```
-h, --help Display help message
-v, --version Print version information and exit
-g, --goal GOAL Run the query GOAL after consulting files
-f Fast startup. Do not load initialization file (~/.scryerrc)
--no-add-history Prevent adding input to history file (~/.scryer_history)
```
All specified Prolog files are consulted.
After Prolog files, application-specific arguments can be specified on
the command line. These arguments can be accessed from within Prolog
applications with the predicate&nbsp;`argv/1`, which yields the list
of arguments represented as strings.
Prolog files can also be turned into *shell&nbsp;scripts* as explained in
https://github.com/mthom/scryer-prolog/issues/2170#issuecomment-1821713993.
### Dynamic operators
Scryer supports dynamic operators. Using the built-in

84
build/instructions_template.rs
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@@ -511,18 +511,12 @@ enum SystemClauseType {
#[cfg(feature = "crypto-full")]
#[strum_discriminants(strum(props(Arity = "6", Name = "$crypto_data_decrypt")))]
CryptoDataDecrypt,
#[cfg(feature = "crypto-full")]
#[strum_discriminants(strum(props(Arity = "4", Name = "$ed25519_sign")))]
Ed25519Sign,
#[cfg(feature = "crypto-full")]
#[strum_discriminants(strum(props(Arity = "4", Name = "$ed25519_verify")))]
Ed25519Verify,
#[cfg(feature = "crypto-full")]
#[strum_discriminants(strum(props(Arity = "1", Name = "$ed25519_new_keypair")))]
Ed25519NewKeyPair,
#[cfg(feature = "crypto-full")]
#[strum_discriminants(strum(props(Arity = "2", Name = "$ed25519_keypair_public_key")))]
Ed25519KeyPairPublicKey,
#[strum_discriminants(strum(props(Arity = "4", Name = "$ed25519_sign_raw")))]
Ed25519SignRaw,
#[strum_discriminants(strum(props(Arity = "4", Name = "$ed25519_verify_raw")))]
Ed25519VerifyRaw,
#[strum_discriminants(strum(props(Arity = "2", Name = "$ed25519_seed_to_public_key")))]
Ed25519SeedToPublicKey,
#[strum_discriminants(strum(props(Arity = "2", Name = "$first_non_octet")))]
FirstNonOctet,
#[strum_discriminants(strum(props(Arity = "3", Name = "$load_html")))]
@@ -610,6 +604,8 @@ enum SystemClauseType {
KeySortWithConstantVarOrdering,
#[strum_discriminants(strum(props(Arity = "0", Name = "$inference_limit_exceeded")))]
InferenceLimitExceeded,
#[strum_discriminants(strum(props(Arity = "1", Name = "$argv")))]
Argv,
REPL(REPLCodePtr),
}
@@ -796,8 +792,8 @@ enum InstructionTemplate {
#[strum_discriminants(strum(props(Arity = "0", Name = "install_verify_attr")))]
InstallVerifyAttr,
// call verify_attrs.
#[strum_discriminants(strum(props(Arity = "0", Name = "verify_attr_interrupt")))]
VerifyAttrInterrupt,
#[strum_discriminants(strum(props(Arity = "1", Name = "verify_attr_interrupt")))]
VerifyAttrInterrupt(usize),
// procedures
CallClause(ClauseType, usize, usize, bool, bool), // ClauseType,
// arity,
@@ -1157,6 +1153,33 @@ fn generate_instruction_preface() -> TokenStream {
pub type CodeDeque = VecDeque<Instruction>;
impl Instruction {
#[inline]
pub fn registers(&self) -> Vec<RegType> {
match self {
&Instruction::GetConstant(_, _, r) => vec![r],
&Instruction::GetList(_, r) => vec![r],
&Instruction::GetPartialString(_, _, r, _) => vec![r],
&Instruction::GetStructure(_, _, _, r) => vec![r],
&Instruction::GetVariable(r, t) => vec![r, temp_v!(t)],
&Instruction::GetValue(r, t) => vec![r, temp_v!(t)],
&Instruction::UnifyLocalValue(r) => vec![r],
&Instruction::UnifyVariable(r) => vec![r],
&Instruction::PutConstant(_, _, r) => vec![r],
&Instruction::PutList(_, r) => vec![r],
&Instruction::PutPartialString(_, _, r, _) => vec![r],
&Instruction::PutStructure(_, _, r) => vec![r],
&Instruction::PutValue(r, t) => vec![r, temp_v!(t)],
&Instruction::PutVariable(r, t) => vec![r, temp_v!(t)],
&Instruction::SetLocalValue(r) => vec![r],
&Instruction::SetVariable(r) => vec![r],
&Instruction::SetValue(r) => vec![r],
&Instruction::GetLevel(r) => vec![r],
&Instruction::GetPrevLevel(r) => vec![r],
&Instruction::GetCutPoint(r) => vec![r],
_ => vec![],
}
}
#[inline]
pub fn to_indexing_line_mut(&mut self) -> Option<&mut Vec<IndexingLine>> {
match self {
@@ -1199,7 +1222,10 @@ fn generate_instruction_preface() -> TokenStream {
Instruction::SetLocalValue(..) |
Instruction::SetVariable(..) |
Instruction::SetValue(..) |
Instruction::SetVoid(..))
Instruction::SetVoid(..) |
Instruction::GetLevel(..) |
Instruction::GetPrevLevel(..) |
Instruction::GetCutPoint(..))
}
pub fn enqueue_functors(
@@ -1244,8 +1270,8 @@ fn generate_instruction_preface() -> TokenStream {
&Instruction::InstallVerifyAttr => {
functor!(atom!("install_verify_attr"))
}
&Instruction::VerifyAttrInterrupt => {
functor!(atom!("verify_attr_interrupt"))
&Instruction::VerifyAttrInterrupt(arity) => {
functor!(atom!("verify_attr_interrupt"), [fixnum(arity)])
}
&Instruction::DynamicElse(birth, death, next_or_fail) => {
match (death, next_or_fail) {
@@ -1874,18 +1900,18 @@ fn generate_instruction_preface() -> TokenStream {
&Instruction::CallFlushTermQueue |
&Instruction::CallRemoveModuleExports |
&Instruction::CallAddNonCountedBacktracking |
&Instruction::CallPopCount => {
&Instruction::CallPopCount |
&Instruction::CallArgv |
&Instruction::CallEd25519SignRaw |
&Instruction::CallEd25519VerifyRaw |
&Instruction::CallEd25519SeedToPublicKey => {
let (name, arity) = self.to_name_and_arity();
functor!(atom!("call"), [atom(name), fixnum(arity)])
}
//
#[cfg(feature = "crypto-full")]
&Instruction::CallCryptoDataEncrypt |
&Instruction::CallCryptoDataDecrypt |
&Instruction::CallEd25519Sign |
&Instruction::CallEd25519Verify |
&Instruction::CallEd25519NewKeyPair |
&Instruction::CallEd25519KeyPairPublicKey => {
&Instruction::CallCryptoDataDecrypt => {
let (name, arity) = self.to_name_and_arity();
functor!(atom!("call"), [atom(name), fixnum(arity)])
}
@@ -2110,18 +2136,18 @@ fn generate_instruction_preface() -> TokenStream {
&Instruction::ExecuteFlushTermQueue |
&Instruction::ExecuteRemoveModuleExports |
&Instruction::ExecuteAddNonCountedBacktracking |
&Instruction::ExecutePopCount => {
&Instruction::ExecutePopCount |
&Instruction::ExecuteArgv |
&Instruction::ExecuteEd25519SignRaw |
&Instruction::ExecuteEd25519VerifyRaw |
&Instruction::ExecuteEd25519SeedToPublicKey => {
let (name, arity) = self.to_name_and_arity();
functor!(atom!("execute"), [atom(name), fixnum(arity)])
}
//
#[cfg(feature = "crypto-full")]
&Instruction::ExecuteCryptoDataEncrypt |
&Instruction::ExecuteCryptoDataDecrypt |
&Instruction::ExecuteEd25519Sign |
&Instruction::ExecuteEd25519Verify |
&Instruction::ExecuteEd25519NewKeyPair |
&Instruction::ExecuteEd25519KeyPairPublicKey => {
&Instruction::ExecuteCryptoDataDecrypt => {
let (name, arity) = self.to_name_and_arity();
functor!(atom!("execute"), [atom(name), fixnum(arity)])
}

35
src/allocator.rs
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@@ -53,40 +53,5 @@ pub(crate) trait Allocator {
fn reset_contents(&mut self);
fn advance_arg(&mut self);
/*
fn bindings(&self) -> &AllocVarDict;
fn bindings_mut(&mut self) -> &mut AllocVarDict;
fn take_bindings(self) -> AllocVarDict;
*/
fn max_reg_allocated(&self) -> usize;
// TODO: wha.. why?? grrr. it drains the VarStatus data from vs (which it owns!)
// into self.bindings and perm_vs after all is computed (i.e. vs.populate_restricting_sets()
// and vs.set_perm_vals(has_deep_cut) have both been called).
/*
fn drain_var_data<'a>(
&mut self,
vs: VariableFixtures,
num_of_chunks: usize,
) -> VariableFixtures {
let mut perm_vs = VariableFixtures::new();
for (var, var_status) in vs.into_iter() {
match var_status {
VarStatus::Temp(chunk_num, tvd) => {
self.bindings_mut()
.insert(var.clone(), VarAlloc::Temp(chunk_num, 0, tvd));
}
VarStatus::Perm(_) => {
self.bindings_mut().insert(var.clone(), VarAlloc::Perm(0));
perm_vs.insert(var, var_status);
}
};
}
perm_vs
}
*/
}

8
src/arena.rs
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@@ -821,9 +821,9 @@ impl AllocSlab {
}
fn payload_offset<T>(&self) -> *mut T {
let mut ptr = (self as *const AllocSlab) as usize;
ptr += mem::size_of::<AllocSlab>();
ptr as *mut T
// This looks really scary, should this method be marked as unsafe?
// Also, this seems to cause UB.
unsafe { (self as *const AllocSlab).add(1) as *mut T }
}
}
@@ -864,6 +864,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn heap_cell_value_const_cast() {
let mut wam = MockWAM::new();
#[cfg(target_pointer_width = "32")]
@@ -907,6 +908,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on arena.rs UB")]
fn heap_put_literal_tests() {
let mut wam = MockWAM::new();

3
src/atom_table.rs
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@@ -239,6 +239,7 @@ impl Atom {
} else if let Some(ptr) = self.as_ptr() {
AtomString::Dynamic(AtomTableRef::map(ptr, |ptr| {
let header =
// Miri seems to hit this line a lot
unsafe { ptr::read::<AtomHeader>(ptr as *const u8 as *const AtomHeader) };
let len = header.len() as usize;
let buf = unsafe { (ptr as *const u8).add(mem::size_of::<AtomHeader>()) };
@@ -265,7 +266,7 @@ impl Atom {
unsafe fn write_to_ptr(string: &str, ptr: *mut u8) {
ptr::write(ptr as *mut _, AtomHeader::build_with(string.len() as u64));
let str_ptr = (ptr as usize + mem::size_of::<AtomHeader>()) as *mut u8;
let str_ptr = ptr.add(mem::size_of::<AtomHeader>());
ptr::copy_nonoverlapping(string.as_ptr(), str_ptr, string.len());
}

2
src/bin/scryer-prolog.rs
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@@ -23,6 +23,6 @@ fn main() -> std::process::ExitCode {
runtime.block_on(async move {
let mut wam = machine::Machine::new(Default::default());
wam.run_top_level(atom!("$toplevel"), (atom!("$repl"), 1))
wam.run_module_predicate(atom!("$toplevel"), (atom!("$repl"), 0))
})
}

3
src/codegen.rs
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@@ -860,6 +860,9 @@ impl<'b> CodeGenerator<'b> {
self.marker.mark_safe_var_unconditionally(var_num);
compile_expr!(self, &terms[1], term_loc, code)
} else {
self.marker
.mark_anon_var::<QueryInstruction>(Level::Shallow, term_loc, code);
if let Term::Var(ref vr, ref var) = &terms[1] {
let var_num = var.to_var_num().unwrap();

11
src/debray_allocator.rs
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@@ -604,16 +604,9 @@ impl DebrayAllocator {
Target::unsafe_argument_to_value(r, arg_c)
}
}
VarAlloc::Temp { ref mut safety, .. } => {
if self
.branch_stack
.safety_unneeded_in_branch(safety, &branch_designator)
{
VarAlloc::Temp { .. } => {
debug_assert!(matches!(r, RegType::Temp(_)));
Target::argument_to_value(r, arg_c)
} else {
*safety = VarSafetyStatus::GloballyUnneeded;
Target::unsafe_argument_to_value(r, arg_c)
}
}
_ => {
unreachable!()

13
src/heap_iter.rs
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@@ -108,7 +108,7 @@ impl<'a> EagerStackfulPreOrderHeapIter<'a> {
let var_value = self.heap[h];
self.heap[h].set_mark_bit(self.mark_phase);
if !(self.heap[h].is_var() && self.heap[h].get_value() as usize == h) {
if var_value.get_mark_bit() || !(self.heap[h].is_var() && self.heap[h].get_value() as usize == h) {
self.iter_stack.push(var_value);
continue;
}
@@ -125,13 +125,14 @@ impl<'a> EagerStackfulPreOrderHeapIter<'a> {
continue;
}
let value = self.heap[h+1];
self.heap[h].set_mark_bit(self.mark_phase);
self.heap[h+1].set_mark_bit(self.mark_phase);
if self.heap[h].get_tag() == HeapCellValueTag::PStr {
let value = self.heap[h+1];
self.heap[h+1].set_mark_bit(self.mark_phase);
self.iter_stack.push(value);
}
}
_ => {
}
);
@@ -685,6 +686,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "it takes too long to run")]
fn heap_stackless_iter_tests() {
let mut wam = MockWAM::new();
@@ -1756,6 +1758,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on atom_table.rs UB")]
fn heap_stackful_iter_tests() {
let mut wam = MockWAM::new();
@@ -2348,6 +2351,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on atom_table.rs UB")]
fn heap_stackful_post_order_iter() {
let mut wam = MockWAM::new();
@@ -2831,6 +2835,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on atom_table.rs UB")]
fn heap_stackless_post_order_iter() {
let mut wam = MockWAM::new();

5
src/heap_print.rs
View File

@@ -1444,7 +1444,6 @@ impl<'a, Outputter: HCValueOutputter> HCPrinter<'a, Outputter> {
}
}
#[allow(dead_code)]
fn print_tcp_listener(&mut self, tcp_listener: &TcpListener, max_depth: usize) {
let (ip, port) = if let Ok(addr) = tcp_listener.local_addr() {
(addr.ip(), addr.port())
@@ -1727,6 +1726,9 @@ impl<'a, Outputter: HCValueOutputter> HCPrinter<'a, Outputter> {
(ArenaHeaderTag::Stream, stream) => {
self.print_stream(stream, max_depth);
}
(ArenaHeaderTag::TcpListener, listener) => {
self.print_tcp_listener(&*listener, max_depth);
}
(ArenaHeaderTag::Dropped, _value) => {
self.print_impromptu_atom(atom!("$dropped_value"));
}
@@ -1833,6 +1835,7 @@ mod tests {
use crate::machine::mock_wam::*;
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn term_printing_tests() {
let mut wam = MockWAM::new();

9
src/lib/atts.pl
View File

@@ -1,8 +1,8 @@
:- module(atts, [op(1199, fx, attribute),
call_residue_vars/2,
term_attributed_variables/2]).
:- use_module(library(dcgs)).
:- use_module(library(error)).
:- use_module(library(terms)).
/* represent the list of attributes belonging to a variable,
@@ -110,12 +110,5 @@ user:goal_expansion(Term, M:get_atts(Var, Attr)) :-
nonvar(Term),
Term = get_atts(Var, M, Attr).
:- meta_predicate call_residue_vars(0, ?).
call_residue_vars(Goal, Vars) :-
'$get_attr_var_queue_delim'(B),
call(Goal),
'$get_attr_var_queue_beyond'(B, Vars).
term_attributed_variables(Term, Vars) :-
'$term_attributed_variables'(Term, Vars).

5
src/lib/builtins.pl
View File

@@ -1239,7 +1239,10 @@ call_retract_helper(Head, Body, P, Module) :-
; ClauseQualifier = Module
),
ClauseQualifier:'$clause'(Head, Body),
'$get_clause_p'(Head, P, Module).
% ensure '$get_clause_p'/3 is not the last clause so it can
% recover the choice point of '$clause' if necessary.
'$get_clause_p'(Head, P, Module),
true.
call_retract(Head, Body, Name, Arity, Module) :-
findall(P, builtins:call_retract_helper(Head, Body, P, Module), Ps),

26
src/lib/clpb.pl
View File

@@ -189,18 +189,18 @@ A _Boolean expression_ is one of:
| `1` | true |
| _variable_ | unknown truth value |
| _atom_ | universally quantified variable |
| ~ _Expr_ | logical NOT |
| _Expr_ + _Expr_ | logical OR |
| _Expr_ * _Expr_ | logical AND |
| _Expr_ # _Expr_ | exclusive OR |
| _Var_ ^ _Expr_ | existential quantification |
| _Expr_ =:= _Expr_ | equality |
| _Expr_ =\= _Expr_ | disequality (same as #) |
| _Expr_ =< _Expr_ | less or equal (implication) |
| _Expr_ >= _Expr_ | greater or equal |
| _Expr_ < _Expr_ | less than |
| _Expr_ > _Expr_ | greater than |
| card(Is,Exprs) | cardinality constraint (_see below_) |
| `~` _Expr_ | logical NOT |
| _Expr_ `+` _Expr_ | logical OR |
| _Expr_ `*` _Expr_ | logical AND |
| _Expr_ `#` _Expr_ | exclusive OR |
| _Var_ `^` _Expr_ | existential quantification |
| _Expr_ `=:=` _Expr_ | equality |
| _Expr_ `=\=` _Expr_ | disequality (same as #) |
| _Expr_ `=<` _Expr_ | less or equal (implication) |
| _Expr_ `>=` _Expr_ | greater or equal |
| _Expr_ `<` _Expr_ | less than |
| _Expr_ `>` _Expr_ | greater than |
| `card(Is,Exprs)` | cardinality constraint (_see below_) |
| `+(Exprs)` | n-fold disjunction (_see below_) |
| `*(Exprs)` | n-fold conjunction (_see below_) |
@@ -1251,7 +1251,7 @@ bdd_restriction_(Node, VI, Value, Res) -->
node_id(Node, ID) },
( { I0 =:= VI } ->
( { Value =:= 0 } -> { Res = Low }
; { Value =:= 1 } -> { Res = High }
; { Res = High }
)
; { I0 > VI } -> { Res = Node }
; state(G0), { get_assoc(ID, G0, Res) } -> []

246
src/lib/clpz.pl
View File

@@ -3,7 +3,7 @@
Author: Markus Triska
E-mail: triska@metalevel.at
WWW: https://www.metalevel.at
Copyright (C): 2016-2023 Markus Triska
Copyright (C): 2016-2024 Markus Triska
This library provides CLP(ℤ):
@@ -1015,6 +1015,9 @@ X in inf..sup.
needed to schedule the propagators!
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
:- meta_predicate(duophrase(4, ?, ?)).
:- meta_predicate(duophrase(4, ?, ?, ?, ?)).
duophrase(NT, As, Bs) :-
duophrase(NT, As, [], Bs, []).
@@ -1735,7 +1738,7 @@ intervals_to_domain(Is, D) :-
% _Lower_ must be an integer or the atom *inf*, which
% denotes negative infinity. _Upper_ must be an integer or
% the atom *sup*, which denotes positive infinity.
% * Domain1 \/ Domain2
% * Domain1 `\/` Domain2
% The union of Domain1 and Domain2.
Var in Dom :- clpz_in(Var, Dom).
@@ -2409,22 +2412,22 @@ sum_finite_domains([C|Cs], [V|Vs], Inf0, Sup0, Inf, Sup) ++>
),
sum_finite_domains(Cs, Vs, Inf2, Sup2, Inf, Sup).
remove_dist_upper_lower([], _, _, _).
remove_dist_upper_lower([C|Cs], [V|Vs], D1, D2) :-
( fd_get(V, VD, VPs) ->
remove_dist_upper_lower([], _, _, _) --> [].
remove_dist_upper_lower([C|Cs], [V|Vs], D1, D2) -->
( { fd_get(V, VD, VPs) } ->
( C < 0 ->
domain_supremum(VD, n(Sup)),
{ domain_supremum(VD, n(Sup)),
L is Sup + D1//C,
domain_remove_smaller_than(VD, L, VD1),
domain_infimum(VD1, n(Inf)),
G is Inf - D2//C,
domain_remove_greater_than(VD1, G, VD2)
; domain_infimum(VD, n(Inf)),
domain_remove_greater_than(VD1, G, VD2) }
; { domain_infimum(VD, n(Inf)),
G is Inf + D1//C,
domain_remove_greater_than(VD, G, VD1),
domain_supremum(VD1, n(Sup)),
L is Sup - D2//C,
domain_remove_smaller_than(VD1, L, VD2)
domain_remove_smaller_than(VD1, L, VD2) }
),
fd_put(V, VD2, VPs)
; true
@@ -2432,16 +2435,16 @@ remove_dist_upper_lower([C|Cs], [V|Vs], D1, D2) :-
remove_dist_upper_lower(Cs, Vs, D1, D2).
remove_dist_upper_leq([], _, _).
remove_dist_upper_leq([C|Cs], [V|Vs], D1) :-
( fd_get(V, VD, VPs) ->
remove_dist_upper_leq([], _, _) --> [].
remove_dist_upper_leq([C|Cs], [V|Vs], D1) -->
( { fd_get(V, VD, VPs) } ->
( C < 0 ->
domain_supremum(VD, n(Sup)),
{ domain_supremum(VD, n(Sup)),
L is Sup + D1//C,
domain_remove_smaller_than(VD, L, VD1)
; domain_infimum(VD, n(Inf)),
domain_remove_smaller_than(VD, L, VD1) }
; { domain_infimum(VD, n(Inf)),
G is Inf + D1//C,
domain_remove_greater_than(VD, G, VD1)
domain_remove_greater_than(VD, G, VD1) }
),
fd_put(V, VD1, VPs)
; true
@@ -2449,18 +2452,18 @@ remove_dist_upper_leq([C|Cs], [V|Vs], D1) :-
remove_dist_upper_leq(Cs, Vs, D1).
remove_dist_upper([], _).
remove_dist_upper([C*V|CVs], D) :-
( fd_get(V, VD, VPs) ->
remove_dist_upper([], _) --> [].
remove_dist_upper([C*V|CVs], D) -->
( { fd_get(V, VD, VPs) } ->
( C < 0 ->
( domain_supremum(VD, n(Sup)) ->
L is Sup + D//C,
domain_remove_smaller_than(VD, L, VD1)
( { domain_supremum(VD, n(Sup)) } ->
{ L is Sup + D//C,
domain_remove_smaller_than(VD, L, VD1) }
; VD1 = VD
)
; ( domain_infimum(VD, n(Inf)) ->
G is Inf + D//C,
domain_remove_greater_than(VD, G, VD1)
; ( { domain_infimum(VD, n(Inf)) } ->
{ G is Inf + D//C,
domain_remove_greater_than(VD, G, VD1) }
; VD1 = VD
)
),
@@ -2469,18 +2472,18 @@ remove_dist_upper([C*V|CVs], D) :-
),
remove_dist_upper(CVs, D).
remove_dist_lower([], _).
remove_dist_lower([C*V|CVs], D) :-
( fd_get(V, VD, VPs) ->
remove_dist_lower([], _) --> [].
remove_dist_lower([C*V|CVs], D) -->
( { fd_get(V, VD, VPs) } ->
( C < 0 ->
( domain_infimum(VD, n(Inf)) ->
G is Inf - D//C,
domain_remove_greater_than(VD, G, VD1)
( { domain_infimum(VD, n(Inf)) } ->
{ G is Inf - D//C,
domain_remove_greater_than(VD, G, VD1) }
; VD1 = VD
)
; ( domain_supremum(VD, n(Sup)) ->
L is Sup - D//C,
domain_remove_smaller_than(VD, L, VD1)
; ( { domain_supremum(VD, n(Sup)) } ->
{ L is Sup - D//C,
domain_remove_smaller_than(VD, L, VD1) }
; VD1 = VD
)
),
@@ -2489,26 +2492,26 @@ remove_dist_lower([C*V|CVs], D) :-
),
remove_dist_lower(CVs, D).
remove_upper([], _).
remove_upper([C*X|CXs], Max) :-
( fd_get(X, XD, XPs) ->
remove_upper([], _) --> [].
remove_upper([C*X|CXs], Max) -->
( { fd_get(X, XD, XPs) } ->
D is Max//C,
( C < 0 ->
domain_remove_smaller_than(XD, D, XD1)
; domain_remove_greater_than(XD, D, XD1)
{ domain_remove_smaller_than(XD, D, XD1) }
; { domain_remove_greater_than(XD, D, XD1) }
),
fd_put(X, XD1, XPs)
; true
),
remove_upper(CXs, Max).
remove_lower([], _).
remove_lower([C*X|CXs], Min) :-
( fd_get(X, XD, XPs) ->
remove_lower([], _) --> [].
remove_lower([C*X|CXs], Min) -->
( { fd_get(X, XD, XPs) } ->
D is -Min//C,
( C < 0 ->
domain_remove_greater_than(XD, D, XD1)
; domain_remove_smaller_than(XD, D, XD1)
{ domain_remove_greater_than(XD, D, XD1) }
; { domain_remove_smaller_than(XD, D, XD1) }
),
fd_put(X, XD1, XPs)
; true
@@ -2747,20 +2750,24 @@ propagator_init_trigger(Vs, P) :-
prop_init(Prop, V) :- init_propagator(V, Prop).
geq(A, B) :-
( fd_get(A, AD, APs) ->
domain_infimum(AD, AI),
( fd_get(B, BD, _) ->
domain_supremum(BD, BS),
( AI cis_geq BS -> true
; propagator_init_trigger(pgeq(A,B))
new_queue(Q),
phrase((geq(A, B),do_queue), [Q], _).
geq(A, B) -->
( { fd_get(A, AD, APs) } ->
{ domain_infimum(AD, AI) },
( { fd_get(B, BD, _) } ->
{ domain_supremum(BD, BS) },
( { AI cis_geq BS } -> true
; { propagator_init_trigger(pgeq(A,B)) }
)
; ( AI cis_geq n(B) -> true
; domain_remove_smaller_than(AD, B, AD1),
; ( { AI cis_geq n(B) } -> true
; { domain_remove_smaller_than(AD, B, AD1) },
fd_put(A, AD1, APs)
)
)
; fd_get(B, BD, BPs) ->
domain_remove_greater_than(BD, A, BD1),
; { fd_get(B, BD, BPs) } ->
{ domain_remove_greater_than(BD, A, BD1) },
fd_put(B, BD1, BPs)
; A >= B
).
@@ -4164,6 +4171,7 @@ var(V) --> { var(V) }.
ground(T) --> { ground(T) }.
true --> [].
false --> { false }.
X >= Y --> { X >= Y }.
X =< Y --> { X =< Y }.
@@ -4221,10 +4229,7 @@ activate_propagator(propagator(P,State)) -->
)
).
enable_queue :- true. % NOP
disable_queue :- true. % NOP
%do_queue --> print_queue, { false }.
%do_queue --> print_queue, false.
do_queue -->
( queue_enabled ->
( queue_get_goal(Goal) -> { call(Goal) }, do_queue
@@ -4507,13 +4512,13 @@ run_propagator(pelement(N, Is, V), MState) -->
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
run_propagator(pgcc_single(Vs, Pairs), _) --> { gcc_global(Vs, Pairs) }.
run_propagator(pgcc_single(Vs, Pairs), _) --> gcc_global(Vs, Pairs).
run_propagator(pgcc_check_single(Pairs), _) --> { gcc_check(Pairs) }.
run_propagator(pgcc_check_single(Pairs), _) --> gcc_check(Pairs).
run_propagator(pgcc_check(Pairs), _) --> { gcc_check(Pairs) }.
run_propagator(pgcc_check(Pairs), _) --> gcc_check(Pairs).
run_propagator(pgcc(Vs, _, Pairs), _) --> { gcc_global(Vs, Pairs) }.
run_propagator(pgcc(Vs, _, Pairs), _) --> gcc_global(Vs, Pairs).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -4588,7 +4593,7 @@ run_propagator(pserialized(S_I, D_I, S_J, D_J, _), MState) -->
kill(MState),
( S_I + D_I =< S_J -> []
; S_J + D_J =< S_I -> []
; { false }
; false
)
; serialize_lower_upper(S_I, D_I, S_J, D_J, MState),
serialize_lower_upper(S_J, D_J, S_I, D_I, MState)
@@ -4661,7 +4666,7 @@ run_propagator(x_eq_abs_plus_v(X,V), MState) -->
( nonvar(V) ->
( V =:= 0 -> kill(MState), { X in 0..sup }
; V < 0 -> kill(MState), { X #= V / 2 }
; V > 0 -> { false }
; false % V > 0
)
; nonvar(X) ->
kill(MState),
@@ -4753,10 +4758,10 @@ run_propagator(scalar_product_neq(Cs0,Vs0,P0), MState) -->
) }.
run_propagator(scalar_product_leq(Cs0,Vs0,P0), MState) -->
{ coeffs_variables_const(Cs0, Vs0, Cs, Vs, 0, I),
{ coeffs_variables_const(Cs0, Vs0, Cs, Vs, 0, I) },
P is P0 - I,
( Vs = [] -> kill(MState), P >= 0
; duophrase(sum_finite_domains(Cs, Vs, 0, 0, Inf, Sup), Infs, Sups),
; { duophrase(sum_finite_domains(Cs, Vs, 0, 0, Inf, Sup), Infs, Sups) },
D1 is P - Inf,
disable_queue,
( Infs == [], Sups == [] ->
@@ -4769,27 +4774,27 @@ run_propagator(scalar_product_leq(Cs0,Vs0,P0), MState) -->
; true
),
enable_queue
) }.
).
run_propagator(scalar_product_eq(Cs0,Vs0,P0), MState) -->
{ coeffs_variables_const(Cs0, Vs0, Cs, Vs, 0, I),
{ coeffs_variables_const(Cs0, Vs0, Cs, Vs, 0, I) },
P is P0 - I,
( Vs = [] -> kill(MState), P =:= 0
; Vs = [V], Cs = [C] -> kill(MState), P mod C =:= 0, V is P // C
; Cs == [1,1] -> kill(MState), Vs = [A,B], A + B #= P
; Cs == [1,-1] -> kill(MState), Vs = [A,B], A #= P + B
; Cs == [-1,1] -> kill(MState), Vs = [A,B], B #= P + A
; Cs == [-1,-1] -> kill(MState), Vs = [A,B], P1 is -P, A + B #= P1
; P =:= 0, Cs == [1,1,-1] -> kill(MState), Vs = [A,B,C], A + B #= C
; P =:= 0, Cs == [1,-1,1] -> kill(MState), Vs = [A,B,C], A + C #= B
; P =:= 0, Cs == [-1,1,1] -> kill(MState), Vs = [A,B,C], B + C #= A
; duophrase(sum_finite_domains(Cs, Vs, 0, 0, Inf, Sup), Infs, Sups),
% nl, writeln(Infs-Sups-Inf-Sup),
; Cs == [1,1] -> kill(MState), Vs = [A,B], { A + B #= P }
; Cs == [1,-1] -> kill(MState), Vs = [A,B], { A #= P + B }
; Cs == [-1,1] -> kill(MState), Vs = [A,B], { B #= P + A }
; Cs == [-1,-1] -> kill(MState), Vs = [A,B], P1 is -P, { A + B #= P1 }
; P =:= 0, Cs == [1,1,-1] -> kill(MState), Vs = [A,B,C], { A + B #= C }
; P =:= 0, Cs == [1,-1,1] -> kill(MState), Vs = [A,B,C], { A + C #= B }
; P =:= 0, Cs == [-1,1,1] -> kill(MState), Vs = [A,B,C], { B + C #= A }
; { duophrase(sum_finite_domains(Cs, Vs, 0, 0, Inf, Sup), Infs, Sups) },
% { nl, writeln(Infs-Sups-Inf-Sup) },
D1 is P - Inf,
D2 is Sup - P,
disable_queue,
( Infs == [], Sups == [] ->
between(Inf, Sup, P),
{ between(Inf, Sup, P) },
remove_dist_upper_lower(Cs, Vs, D1, D2)
; Sups = [] -> P =< Sup, remove_dist_lower(Infs, D2)
; Infs = [] -> Inf =< P, remove_dist_upper(Sups, D1)
@@ -4801,7 +4806,7 @@ run_propagator(scalar_product_eq(Cs0,Vs0,P0), MState) -->
; true
),
enable_queue
) }.
).
% X + Y = Z
run_propagator(pplus(X,Y,Z,Morph), MState) -->
@@ -5048,8 +5053,8 @@ run_propagator(ptzdiv(X,Y,Z,Morph), MState) -->
%% % Z = X mod Y
run_propagator(pmod(X,Y,Z), MState) -->
( Y == 0 -> { false }
; Y == Z -> { false }
( Y == 0 -> false
; Y == Z -> false
; X == Y -> kill(MState), queue_goal(Z = 0)
; true
),
@@ -5058,7 +5063,7 @@ run_propagator(pmod(X,Y,Z), MState) -->
Z is X mod Y
; nonvar(Y), nonvar(Z) ->
( Y > 0 -> Z >= 0, Z < Y
; Y < 0 -> Z =< 0, Z > Y
; Z =< 0, Z > Y % Y < 0
),
( { fd_get(X, _, n(XL), _, _) } ->
( (XL - Z) mod Y =\= 0 ->
@@ -5127,7 +5132,7 @@ run_propagator(pmodz(X,Y,Z), MState) -->
fd_put(Z, ZD2, ZPs)
% queue_goal(Z #=< X)
)
; X < 0 ->
; X < 0,
( { fd_get(Y, _, _, n(YU), _), YU < X } ->
kill(MState),
queue_goal(Z = X)
@@ -5167,7 +5172,7 @@ run_propagator(pmodz(X,Y,Z), MState) -->
fd_put(Z, ZD5, ZPs)
% queue_goal(Z in ZMin..0)
)
; Y > 0 ->
; Y > 0,
( { fd_get(X, _, n(XL), n(XU), _), XL >= 0, Y > XU } ->
kill(MState),
queue_goal(Z = X)
@@ -5378,8 +5383,9 @@ run_propagator(pmax(X,Y,Z), MState) -->
; nonvar(Z) ->
( Z =:= X -> kill(MState), queue_goal(X #>= Y)
; Z > X -> queue_goal(Z = Y)
; { false } % Z < X
; false % Z < X
)
; Y == Z -> kill(MState), queue_goal(Y #>= X)
; { fd_get(Y, _, YInf, YSup, _) },
( { YInf cis_gt n(X) } -> queue_goal(Z = Y)
; { YSup cis_lt n(X) } -> queue_goal(Z = X)
@@ -5394,7 +5400,7 @@ run_propagator(pmax(X,Y,Z), MState) -->
; { fd_get(Z, ZD, ZPs) } ->
{ fd_get(X, _, XInf, XSup, _),
fd_get(Y, _, YInf, YSup, _) },
( { YInf cis_gt YSup } -> kill(MState), queue_goal(Z = Y)
( { YInf cis_gt XSup } -> kill(MState), queue_goal(Z = Y)
; { YSup cis_lt XInf } -> kill(MState), queue_goal(Z = X)
; { n(M) cis max(XSup, YSup) } ->
{ domain_remove_greater_than(ZD, M, ZD1) },
@@ -5413,8 +5419,9 @@ run_propagator(pmin(X,Y,Z), MState) -->
; nonvar(Z) ->
( Z =:= X -> kill(MState), { X #=< Y }
; Z < X -> Z = Y
; { false } % Z > X
; false % Z > X
)
; Y == Z -> kill(MState), queue_goal(Y #=< X)
; { fd_get(Y, _, YInf, YSup, _) },
( { YSup cis_lt n(X) } -> Z = Y
; { YInf cis_gt n(X) } -> Z = X
@@ -5429,7 +5436,7 @@ run_propagator(pmin(X,Y,Z), MState) -->
; { fd_get(Z, ZD, ZPs) } ->
{ fd_get(X, _, XInf, XSup, _),
fd_get(Y, _, YInf, YSup, _) },
( { YSup cis_lt YInf } -> kill(MState), Z = Y
( { YSup cis_lt XInf } -> kill(MState), Z = Y
; { YInf cis_gt XSup } -> kill(MState), Z = X
; { n(M) cis min(XInf, YInf) } ->
{ domain_remove_smaller_than(ZD, M, ZD1) },
@@ -5448,6 +5455,7 @@ run_propagator(pexp(X,Y,Z,Morph), MState) -->
morph_into_propagator(MState, [Y,Z], reified_eq(1,Y,1,0,[],Z), Morph)
; Y == 0 -> kill(MState), Z = 1
; Y == 1 -> kill(MState), Z = X
; Y == Z -> kill(MState), X = Y, queue_goal(X in -1\/1)
; nonvar(X) ->
( nonvar(Y) ->
( Y >= 0 -> true ; X =:= -1 ),
@@ -5536,7 +5544,7 @@ run_propagator(pexp(X,Y,Z,Morph), MState) -->
fd_put(Z, ZD2, ZPs),
{ ( even(Y), ZU = n(Num) ->
integer_kth_root_leq(Num, Y, RU),
( XL cis_geq n(0), ZL = n(Num1) ->
( XL cis_geq n(0), ZL = n(Num1), Num1 >= 0 ->
integer_kth_root_leq(Num1, Y, RL0),
( RL0^Y < Num1 -> RL is RL0 + 1
; RL = RL0
@@ -5726,8 +5734,7 @@ run_propagator(reified_fd(V,B), MState) -->
B = 1
; { B == 0 } ->
( { fd_inf(V, inf) } -> []
; { fd_sup(V, sup) } -> []
; { false }
; { fd_sup(V, sup) }
)
; []
).
@@ -6788,13 +6795,20 @@ gcc_pairs([Key-Num0|KNs], Vs, [Key-Num|Rest]) :-
Constraint", AAAI-96 Portland, OR, USA, pp 209--215, 1996
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
gcc_global(Vs, KNs) :-
gcc_check(KNs),
% previously: call do_queue/0 (now a NOP) here to reach a
% fix-point: all elements of clpz_gcc_vs must be variables. We
% must ensure this holds if gcc_check/1 is later rewritten to
% actually disable the queue.
with_local_attributes(Vs,
gcc_global(Vs, KNs) -->
% at this point, all elements of clpz_gcc_vs must be
% variables, which a previously scheduled and called
% gcc_check//1 ensures. Note that gcc_check//1 disables the
% queue and accumulates constraints in the queue. Do we need
% to insert a call of do_queue//0 here to reach a fixpoint? I
% think not, because verify_attributes/3 gives each variable
% that is involved in a unification an opportunity to schedule
% its propagators, even if the unifications happen
% simultaneously (such as [A,B] = [0,1], which can happen in
% the propagator of tuples_in/2). Hence: We need this only if
% an example shows it, ideally found by a systematic search
% that can be used to test the implementation.
{ with_local_attributes(Vs,
(gcc_arcs(KNs, S, Vals),
variables_with_num_occurrences(Vs, VNs),
maplist(target_to_v(T), VNs),
@@ -6805,9 +6819,9 @@ gcc_global(Vs, KNs) :-
gcc_consistent(T),
scc(Vals, gcc_successors),
phrase(gcc_goals(Vals), Gs)
; Gs = [] )), Gs),
; Gs = [] )), Gs) },
disable_queue,
maplist(call, Gs),
neq_nums(Gs),
enable_queue.
gcc_consistent(T) :-
@@ -6834,7 +6848,7 @@ gcc_edge_goal(arc_to(_,_,V,F), Val) -->
get_attr(Val, lowlink, L2),
L1 =\= L2,
get_attr(Val, value, Value) } ->
[clpz:neq_num(V, Value)]
[neq_num(V, Value)]
; []
).
@@ -7004,7 +7018,7 @@ gcc_succ_edge(arc_from(_,_,V,F)) -->
consistency.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
gcc_check(Pairs) :-
gcc_check(Pairs) -->
disable_queue,
gcc_check_(Pairs),
enable_queue.
@@ -7014,36 +7028,36 @@ gcc_done(Num) :-
del_attr(Num, clpz_gcc_num),
del_attr(Num, clpz_gcc_occurred).
gcc_check_([]).
gcc_check_([Key-Num0|KNs]) :-
( get_attr(Num0, clpz_gcc_vs, Vs) ->
get_attr(Num0, clpz_gcc_num, Num),
gcc_check_([]) --> [].
gcc_check_([Key-Num0|KNs]) -->
( { get_attr(Num0, clpz_gcc_vs, Vs) } ->
{ get_attr(Num0, clpz_gcc_num, Num),
get_attr(Num0, clpz_gcc_occurred, Occ0),
vs_key_min_others(Vs, Key, 0, Min, Os),
put_attr(Num0, clpz_gcc_vs, Os),
put_attr(Num0, clpz_gcc_occurred, Occ1),
Occ1 is Occ0 + Min,
Occ1 is Occ0 + Min },
geq(Num, Occ1),
% The queue is disabled for efficiency here in any case.
% If it were enabled, make sure to retain the invariant
% that gcc_global is never triggered during an
% inconsistent state (after gcc_done/1 but before all
% relevant constraints are posted).
( Occ1 == Num -> all_neq(Os, Key), gcc_done(Num0)
; Os == [] -> gcc_done(Num0), Num = Occ1
; length(Os, L),
Max is Occ1 + L,
( Occ1 == Num -> all_neq(Os, Key), { gcc_done(Num0) }
; Os == [] -> { gcc_done(Num0) }, Num = Occ1
; { length(Os, L),
Max is Occ1 + L },
geq(Max, Num),
( nonvar(Num) -> Diff is Num - Occ1
; fd_get(Num, ND, _),
domain_infimum(ND, n(NInf)),
( { nonvar(Num) } -> Diff is Num - Occ1
; { fd_get(Num, ND, _),
domain_infimum(ND, n(NInf)) },
Diff is NInf - Occ1
),
L >= Diff,
( L =:= Diff ->
Num is Occ1 + Diff,
maplist(=(Key), Os),
gcc_done(Num0)
{ maplist(=(Key), Os),
gcc_done(Num0) }
; true
)
)

69
src/lib/crypto.pl
View File

@@ -25,6 +25,7 @@
crypto_password_hash/3, % +Password, -Hash, +Options
crypto_data_encrypt/6, % +PlainText, +Algorithm, +Key, +IV, -CipherText, +Options
crypto_data_decrypt/6, % +CipherText, +Algorithm, +Key, +IV, -PlainText, +Options
ed25519_seed_keypair/2, % +Seed, -KeyPair
ed25519_new_keypair/1, % -KeyPair
ed25519_keypair_public_key/2, % +KeyPair, +PublicKey
ed25519_sign/4, % +KeyPair, +Data, -Signature, +Options
@@ -612,6 +613,50 @@ encoding_chars(utf8, Cs, Cs) :-
===============================
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
%% ed25519_seed_keypair(+Seed, -Pair)
%
% Use Seed to deterministically generate an Ed25519 key pair Pair, a
% list of characters. Seed must be a list of 32 bytes. It can be
% chosen at random (using for example `crypto_n_random_bytes/2`) or
% derived from input keying material (IKM) using for example
% `crypto_data_hkdf/4`. The pair contains the private key and must be
% kept absolutely secret. Pair can be used for signing. Its public
% key can be obtained with `ed25519_keypair_public_key/2`.
ed25519_seed_keypair(Seed, Pair) :-
must_be_bytes(Seed, ed25519_keypair_from_seed/2),
length(Seed, 32),
'$ed25519_seed_to_public_key'(Seed, Public),
maplist(char_code, Public, PublicBytes),
phrase(ed25519_PKCS8v2(Seed,PublicBytes), DERs),
maplist(char_code, Pair, DERs).
% DER (and hence BER) encoding of an Ed25519 private key and
% corresponding public key in PKCS#8v2 format (RFC 5958) as specified
% in RFC 8410.
ed25519_PKCS8v2(Seed, PublicBytes) -->
[0x30,81], % a SEQUENCE of 81 bytes follows
% the publicKey is present, hence we set version to v2
[2,1,1], % the integer 1 denoting version 2 (awesome design!)
% privateKeyAlgorithm: SEQUENCE
[0x30,5], % a SEQUENCE of 5 bytes follows
[6,3], % an OBJECT IDENTIFIER of 3 bytes follows
[43,101,112], % OID of Ed25519
% privateKey: OCTET STRING
[4,34], % an OCTET STRING of 34 bytes follows
[4,32], % an OCTET STRING of 32 bytes follows
seq(Seed), % the seed is the private key
% publicKey: [1] IMPLICIT BIT STRING; context-specific, hence bit 7 set
[0b10000001], % the public key follows
[33], % a BIT STRING of length 33 follows
[0], % 32 bytes is divisible by 8, hence 0 unused bits
seq(PublicBytes).
%% ed25519_new_keypair(-Pair)
%
% Yields a new Ed25519 key pair Pair, a list of characters. The
@@ -620,7 +665,8 @@ encoding_chars(utf8, Cs, Cs) :-
% with `ed25519_keypair_public_key/2`.
ed25519_new_keypair(Pair) :-
'$ed25519_new_keypair'(Pair).
crypto_n_random_bytes(32, Bytes),
ed25519_seed_keypair(Bytes, Pair).
%% ed25519_keypair_public_key(+Pair, -PublicKey)
%
@@ -629,8 +675,11 @@ ed25519_new_keypair(Pair) :-
% The public key is represented as a list of characters.
ed25519_keypair_public_key(Pair, PublicKey) :-
must_be_octet_chars(Pair, ed25519_keypair_public_key),
'$ed25519_keypair_public_key'(Pair, PublicKey).
must_be_octet_chars(Pair, ed25519_keypair_public_key/2),
reverse(Pair, RPs),
length(RPublicKey, 32),
phrase((seq(RPublicKey),...), RPs),
reverse(RPublicKey, PublicKey).
%% ed25519_sign(+Key, +Data, -Signature, +Options)
%
@@ -638,10 +687,14 @@ ed25519_keypair_public_key(Pair, PublicKey) :-
% PKCS#8 v2 format as generated by `ed25519_new_keypair/1`. Sign Data
% with Key, yielding Signature as a list of hexadecimal characters.
ed25519_sign(Key, Data0, Signature, Options) :-
must_be_octet_chars(Key, ed25519_sign),
ed25519_sign(KeyPair, Data0, Signature, Options) :-
must_be_octet_chars(KeyPair, ed25519_sign/4),
length(Prefix, 16),
length(PrivateKeyChars, 32),
phrase((seq(Prefix),seq(PrivateKeyChars),...), KeyPair),
maplist(char_code, PrivateKeyChars, PrivateKey),
options_data_chars(Options, Data0, Data, Encoding),
'$ed25519_sign'(Key, Data, Encoding, Signature0),
'$ed25519_sign_raw'(PrivateKey, Data, Encoding, Signature0),
hex_bytes(Signature, Signature0).
%% ed25519_verify(+Key, +Data, +Signature, +Options)
@@ -658,10 +711,10 @@ ed25519_sign(Key, Data0, Signature, Options) :-
% which treats Data as a list of raw bytes.
ed25519_verify(Key, Data0, Signature0, Options) :-
must_be_octet_chars(Key, ed25519_verify),
must_be_octet_chars(Key, ed25519_verify/4),
options_data_chars(Options, Data0, Data, Encoding),
hex_bytes(Signature0, Signature),
'$ed25519_verify'(Key, Data, Encoding, Signature).
'$ed25519_verify_raw'(Key, Data, Encoding, Signature).
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
X25519: ECDH key exchange over Curve25519

65
src/lib/dcgs.pl
View File

@@ -12,9 +12,12 @@ to learn more about them.
[op(1105, xfy, '|'),
phrase/2,
phrase/3,
phrase/4,
phrase/5,
seq//1,
seqq//1,
... //0
... //0,
(-->)/2
]).
:- use_module(library(error)).
@@ -26,6 +29,10 @@ to learn more about them.
:- meta_predicate phrase(2, ?, ?).
:- meta_predicate phrase(2, ?, ?, ?).
:- meta_predicate phrase(2, ?, ?, ?, ?).
%% phrase(+Body, ?Ls).
%
% True iff Body describes the list Ls. Body must be a DCG body.
@@ -75,6 +82,34 @@ phrase(GRBody, S0, S) :-
; call(M:GRBody1, S0, S)
).
phrase(GRBody, Arg, S0, S) :-
strip_module(GRBody, M, GRBody1),
( var(GRBody) ->
instantiation_error(phrase/4)
; nonvar(GRBody1),
GRBody1 =.. GRBodys1,
append(GRBodys1, [Arg], GRBodys2),
GRBody2 =.. GRBodys2,
dcg_constr(GRBody2),
dcg_body(GRBody2, S0, S, GRBody3) ->
call(M:GRBody3)
; call(M:GRBody1, Arg, S0, S)
).
phrase(GRBody, Arg1, Arg2, S0, S) :-
strip_module(GRBody, M, GRBody1),
( var(GRBody) ->
instantiation_error(phrase/5)
; nonvar(GRBody1),
GRBody1 =.. GRBodys1,
append(GRBodys1, [Arg1,Arg2], GRBodys2),
GRBody2 =.. GRBodys2,
dcg_constr(GRBody2),
dcg_body(GRBody2, S0, S, GRBody3) ->
call(M:GRBody3)
; call(M:GRBody1, Arg1, Arg2, S0, S)
).
% The same version of the below two dcg_rule clauses, but with module scoping.
dcg_rule(( M:NonTerminal, Terminals --> GRBody ), ( M:Head :- Body )) :-
dcg_non_terminal(NonTerminal, S0, S, Head),
@@ -101,7 +136,10 @@ dcg_rule(( NonTerminal --> GRBody ), ( Head :- Body )) :-
dcg_non_terminal(NonTerminal, S0, S, Goal) :-
NonTerminal =.. NonTerminalUniv,
append(NonTerminalUniv, [S0, S], GoalUniv),
Goal =.. GoalUniv.
( callable(NonTerminal) ->
Goal =.. GoalUniv
; Goal = NonTerminal % let call/N throw an error instead of throwing one here.
).
dcg_terminals(Terminals, S0, S, S0 = List) :-
append(Terminals, S, List).
@@ -116,8 +154,6 @@ dcg_body(GRBody, S0, S, Body) :-
dcg_body(NonTerminal, S0, S, Goal1) :-
nonvar(NonTerminal),
\+ dcg_constr(NonTerminal),
NonTerminal \= ( _ -> _ ),
NonTerminal \= ( \+ _ ),
loader:strip_module(NonTerminal, M, NonTerminal0),
dcg_non_terminal(NonTerminal0, S0, S, Goal0),
( functor(NonTerminal, (:), 2) ->
@@ -135,9 +171,13 @@ dcg_constr(( _'|'_ )). % 7.14.6 - alternative
dcg_constr({_}). % 7.14.7
dcg_constr(call(_)). % 7.14.8
dcg_constr(phrase(_)). % 7.14.9
dcg_constr(phrase(_,_)). % extension of 7.14.9
dcg_constr(phrase(_,_,_)). % extension of 7.14.9
dcg_constr(!). % 7.14.10
%% dcg_constr(\+ _). % 7.14.11 - not (existence implementation dep.)
dcg_constr((_->_)). % 7.14.12 - if-then (existence implementation dep.)
dcg_constr(\+ G_0) :- % 7.14.11 - not (existence implementation def.)
throw(error(representation_error(dcg_body), [culprit- (\+ G_0)])).
dcg_constr((If->Then)) :- % 7.14.12 - if-then (existence implementation def.)
throw(error(representation_error(dcg_body), [culprit- (If->Then)])).
% The principal functor of the first argument indicates
% the construct to be expanded.
@@ -162,8 +202,10 @@ dcg_cbody(( GREither '|' GROr ), S0, S, ( Either ; Or )) :-
dcg_cbody({Goal}, S0, S, ( Goal, S0 = S )).
dcg_cbody(call(Cont), S0, S, call(Cont, S0, S)).
dcg_cbody(phrase(Body), S0, S, phrase(Body, S0, S)).
dcg_cbody(phrase(Body, Arg), S0, S, phrase(Body, Arg, S0, S)).
dcg_cbody(phrase(Body, Arg1, Arg2), S0, S, phrase(Body, Arg1, Arg2, S0, S)).
dcg_cbody(!, S0, S, ( !, S0 = S )).
dcg_cbody(\+ GRBody, S0, S, ( \+ phrase(GRBody,S0,_), S0 = S )).
% dcg_cbody(\+ GRBody, S0, S, ( \+ phrase(GRBody,S0,_), S0 = S )).
dcg_cbody(( GRIf -> GRThen ), S0, S, ( If -> Then )) :-
dcg_body(GRIf, S0, S1, If),
dcg_body(GRThen, S1, S, Then).
@@ -202,6 +244,8 @@ seqq([Es|Ess]) --> seq(Es), seqq(Ess).
error_goal(error(E, must_be/2), error(E, must_be/2)).
error_goal(error(E, (=..)/2), error(E, (=..)/2)).
error_goal(error(representation_error(dcg_body), Context),
error(representation_error(dcg_body), Context)).
error_goal(E, _) :- throw(E).
user:goal_expansion(phrase(GRBody, S, S0), GRBody2) :-
@@ -217,3 +261,10 @@ user:goal_expansion(phrase(GRBody, S, S0), GRBody2) :-
).
user:goal_expansion(phrase(GRBody, S), phrase(GRBody, S, [])).
% (-->)/2 behaves as if it didn't exist. We export (and define) it
% only so that clauses for (-->)/2 cannot be asserted when
% library(dcgs) is loaded.
(_-->_) :- throw(error(existence_error(procedure,(-->)/2),(-->)/2)).

2
src/lib/files.pl
View File

@@ -178,7 +178,7 @@ directory_must_exist(Directory, Context) :-
; throw(error(existence_error(directory, Directory), Context))
).
%% workind_directory(Dir0, Dir).
%% working_directory(Dir0, Dir).
%
% Dir0 is the current working directory, and the working directory
% is changed to Dir.

16
src/lib/format.pl
View File

@@ -1,5 +1,5 @@
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Written 2020-2023 by Markus Triska (triska@metalevel.at)
Written 2020-2024 by Markus Triska (triska@metalevel.at)
Part of Scryer Prolog.
I place this code in the public domain. Use it in any way you want.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
@@ -302,14 +302,14 @@ format_number_chars(N0, Chars) :-
N is N0, % evaluate compound expression
number_chars(N, Chars).
n_newlines(0) --> !.
n_newlines(N0) --> { N0 > 0, N is N0 - 1 }, [newline], n_newlines(N).
n_newlines(0) --> [].
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
?- phrase(upto_what(Cs, ~), "abc~test", Rest).
Cs = [a,b,c], Rest = [~,t,e,s,t].
?- phrase(upto_what(Cs, ~), "abc", Rest).
Cs = [a,b,c], Rest = [].
?- phrase(format:upto_what(Cs, ~), "abc~test", Rest).
Cs = "abc", Rest = "~test".
?- phrase(format:upto_what(Cs, ~), "abc", Rest).
Cs = "abc", Rest = [].
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
separate_digits_fractional(Arg, Sep, Num, Cs) :-
@@ -444,9 +444,9 @@ format(Stream, Fs, Args) :-
?- phrase(format:cells("~`at~50|", [], 0, [], []), Cs),
phrase(format:format_cells(Cs), Ls).
?- phrase(format:cells("~ta~t~tb~tc~21|", [], 0, [], []), Cs).
Cs = [cell(0,21,[glue(' ',_A),chars("a"),glue(' ',_B),glue(' ',_C),chars("b"),glue(' ',_D),chars("c ...")])]
Cs = [cell(0,21,[glue(' ',_A),chars("a"),glue(' ',_B),glue(' ',_C),chars("b"),glue(' ',_D),chars("c")])].
?- phrase(format:cells("~ta~t~4|", [], 0, [], []), Cs).
Cs = [cell(0,4,[glue(' ',_A),chars("a"),glue(' ',_B)])]
Cs = [cell(0,4,[glue(' ',_A),chars("a"),glue(' ',_B)])].
?- phrase(format:format_cell(cell(0,1,[glue(a,_94)])), Ls).

26
src/lib/iso_ext.pl
View File

@@ -9,6 +9,7 @@ but they're not part of the ISO Prolog standard at the moment.
bb_put/2,
call_cleanup/2,
call_with_inference_limit/3,
call_residue_vars/2,
forall/2,
partial_string/1,
partial_string/3,
@@ -17,7 +18,8 @@ but they're not part of the ISO Prolog standard at the moment.
succ/2,
call_nth/2,
countall/2,
copy_term_nat/2]).
copy_term_nat/2,
copy_term/3]).
:- use_module(library(error), [can_be/2,
domain_error/3,
@@ -26,6 +28,8 @@ but they're not part of the ISO Prolog standard at the moment.
:- use_module(library(lists), [maplist/3]).
:- use_module(library('$project_atts')).
:- meta_predicate(forall(0, 0)).
%% forall(Generate, Test).
@@ -382,3 +386,23 @@ countall(Goal, N) :-
copy_term_nat(Source, Dest) :-
'$copy_term_without_attr_vars'(Source, Dest).
%% copy_term(+Term, -Copy, -Gs).
%
% Produce a deep copy of Term and unify it to Copy, without attributes.
% Unify Gs with a list of goals that represent the attributes of Term.
% Similar to `copy_term/2` but splitting the attributes.
copy_term(Term, Copy, Gs) :-
can_be(list, Gs),
findall(Term-Rs, '$project_atts':term_residual_goals(Term,Rs), [Copy-Gs]),
( var(Gs) ->
Gs = []
; true
).
:- meta_predicate call_residue_vars(0, ?).
call_residue_vars(Goal, Vars) :-
can_be(list, Vars),
'$get_attr_var_queue_delim'(B),
call(Goal),
'$get_attr_var_queue_beyond'(B, Vars).

35
src/lib/os.pl
View File

@@ -23,7 +23,9 @@ finding out the PID of the running system.
unsetenv/1,
shell/1,
shell/2,
pid/1]).
pid/1,
raw_argv/1,
argv/1]).
:- use_module(library(error)).
:- use_module(library(charsio)).
@@ -110,3 +112,34 @@ permitted('_').
must_be_chars(Cs) :-
must_be(list, Cs),
maplist(must_be(character), Cs).
%% raw_argv(-Argv)
%
% True iff Argv is the list of arguments that this program was started with (usually passed via command line).
% In contrast to `argv/1`, this version includes every argument, without any postprocessing, just as the operating
% system reports it to the system. This includes-flags of Scryer itself, which are not needed in general.
raw_argv(Argv) :-
can_be(list, Argv),
'$argv'(Argv).
%% argv(-Argv)
%
% True if Argv is the list of arguments that this program was started with (usually passed via command line).
% In this version, only arguments specific to the program are passed. To differentiate between the system
% arguments and the program arguments, we use `--` as a separator.
%
% Example:
%
% ```
% % Call with scryer-prolog -f -- -t hello
% ?- argv(X).
% X = ["-t", "hello"].
% ```
argv(Argv) :-
can_be(list, Argv),
'$argv'(Argv0),
( append(_, ["--"|Argv1], Argv0) ->
Argv = Argv1
;
Argv = []
).

31
src/lib/si.pl
View File

@@ -39,7 +39,8 @@
character_si/1,
term_si/1,
chars_si/1,
dif_si/2]).
dif_si/2,
when_si/2]).
:- use_module(library(lists)).
@@ -98,3 +99,31 @@ dif_si(X, Y) :-
( X \= Y -> true
; throw(error(instantiation_error,dif_si/2))
).
:- meta_predicate(when_si(+, 0)).
%% when_si(Condition, Goal).
%
% Executes Goal when Condition becomes true. Throws an instantiation error if
% it can't decide.
when_si(Condition, Goal) :-
% Taken from https://stackoverflow.com/a/40449516
( when_condition_si(Condition) ->
( Condition ->
Goal
; throw(error(instantiation_error,when_si/2))
)
; throw(error(domain_error(when_condition_si, Condition),_))
).
when_condition_si(Cond) :-
var(Cond), !, throw(error(instantiation_error,when_condition_si/2)).
when_condition_si(ground(_)).
when_condition_si(nonvar(_)).
when_condition_si((A, B)) :-
when_condition_si(A),
when_condition_si(B).
when_condition_si((A ; B)) :-
when_condition_si(A),
when_condition_si(B).

106
src/lib/when.pl Normal file
View File

@@ -0,0 +1,106 @@
/**
Provides the predicate `when/2`.
*/
:- module(when, [when/2]).
:- use_module(library(atts)).
:- use_module(library(dcgs)).
:- use_module(library(lists)).
:- use_module(library(lambda)).
:- use_module(library(format)).
:- use_module(library(debug)).
:- attribute when_list/1.
:- meta_predicate(when(+, 0)).
%% when(Condition, Goal).
%
% Executes Goal when Condition becomes true.
when(Condition, Goal) :-
( when_condition(Condition) ->
( Condition ->
Goal
; term_variables(Condition, Vars),
maplist(
[Goal, Condition]+\Var^(
get_atts(Var, when_list(Whens0)) ->
Whens = [when(Condition, Goal) | Whens0],
put_atts(Var, when_list(Whens))
; put_atts(Var, when_list([when(Condition, Goal)]))
),
Vars
)
)
; throw(error(domain_error(when_condition, Condition),_))
).
when_condition(Cond) :-
% Should this be delayed?
var(Cond), !, throw(error(instantiation_error,when_condition/1)).
when_condition(ground(_)).
when_condition(nonvar(_)).
when_condition((A, B)) :-
when_condition(A),
when_condition(B).
when_condition((A ; B)) :-
when_condition(A),
when_condition(B).
remove_goal([], _, []).
remove_goal([G0|G0s], Goal, Goals) :-
( G0 == Goal ->
remove_goal(G0s, Goal, Goals)
; Goals = [G0|Goals1],
remove_goal(G0s, Goal, Goals1)
).
vars_remove_goal(Vars, Goal) :-
maplist(
Goal+\Var^(
get_atts(Var, when_list(Whens0)) ->
remove_goal(Whens0, Goal, Whens),
( Whens = [] ->
put_atts(Var, -when_list(_))
; put_atts(Var, when_list(Whens))
)
; true
),
Vars
).
reinforce_goal(Goal0, Goal) :-
Goal = (
term_variables(Goal0, Vars),
when:vars_remove_goal(Vars, Goal0),
Goal0
).
verify_attributes(Var, Value, Goals) :-
( get_atts(Var, when_list(Whens)) ->
( var(Value) ->
( get_atts(Value, when_list(WhensValue)) ->
append(Whens, WhensValue, WhensNew),
put_atts(Value, when_list(WhensNew))
; put_atts(Value, when_list(Whens))
),
Goals = []
; maplist(reinforce_goal, Whens, Goals)
)
; Goals = []
).
gather_when_goals([], _) --> [].
gather_when_goals([When|Whens], Var) -->
( { term_variables(When, [V0|_]), Var == V0 } ->
[when:When]
; []
),
gather_when_goals(Whens, Var).
attribute_goals(Var) -->
{ get_atts(Var, when_list(Whens)) },
gather_when_goals(Whens, Var),
{ put_atts(Var, -when_list(_)) }.

109
src/loader.pl
View File

@@ -112,7 +112,7 @@ success_or_warning(Goal) :-
( call(Goal) ->
true
; %% initialization goals can fail without thwarting the load.
write('Warning: initialization/1 failed for: '),
write('% Warning: initialization/1 failed for: '),
writeq(Goal),
nl
).
@@ -138,7 +138,7 @@ file_load_cleanup(Evacuable, Error) :-
load_context(Module),
abolish(Module:'$initialization_goals'/1),
unload_evacuable(Evacuable),
( clause('$toplevel':argv(_), _) ->
( clause('$toplevel':started, _) ->
% let the toplevel call loader:write_error/1
throw(Error)
; '$print_message_and_fail'(Error)
@@ -188,7 +188,7 @@ warn_about_singletons([], _).
warn_about_singletons([Singleton|Singletons], LinesRead) :-
( filter_anonymous_vars([Singleton|Singletons], VarEqs),
VarEqs \== [] ->
write('Warning: singleton variables '),
write('% Warning: singleton variables '),
print_comma_separated_list(VarEqs),
write(' at line '),
write(LinesRead),
@@ -231,6 +231,7 @@ complete_partial_goal(N, HeadArg, InnerHeadArgs, SuppArgs, CompleteHeadArg) :-
integer(N),
N >= 0,
HeadArg =.. [Functor | InnerHeadArgs],
( callable(Functor) ->
% the next two lines are equivalent to length(SuppArgs, N) but
% avoid length/2 so that copy_term/3 (which is invoked by
% length/2) can be bootstrapped without self-reference.
@@ -238,7 +239,9 @@ complete_partial_goal(N, HeadArg, InnerHeadArgs, SuppArgs, CompleteHeadArg) :-
SuppArgsFunctor =.. [_ | SuppArgs],
% length(SuppArgs, N),
append(InnerHeadArgs, SuppArgs, InnerHeadArgs0),
CompleteHeadArg =.. [Functor | InnerHeadArgs0].
CompleteHeadArg =.. [Functor | InnerHeadArgs0]
; type_error(callable, Functor, _)
).
inner_meta_specs(0, HeadArg, InnerHeadArgs, InnerMetaSpecs) :-
!,
@@ -283,7 +286,7 @@ module_expanded_head_variables(Head, HeadVars) :-
print_goal_expansion_warning(Pred) :-
nl,
write('Warning: clause body goal expansion failed because '),
write('% Warning: clause body goal expansion failed because '),
writeq(Pred),
write(' is not callable.'),
nl.
@@ -296,7 +299,7 @@ expand_term_goals(Terms0, Terms) :-
( atom(Module) ->
prolog_load_context(module, Target),
module_expanded_head_variables(Head2, HeadVars),
catch(expand_goal(Body0, Target, Body1, HeadVars),
catch(expand_goal(Body0, Target, Body1, HeadVars, []),
error(type_error(callable, Pred), _),
( loader:print_goal_expansion_warning(Pred),
builtins:(Body1 = Body0)
@@ -306,7 +309,7 @@ expand_term_goals(Terms0, Terms) :-
)
; module_expanded_head_variables(Head1, HeadVars),
prolog_load_context(module, Target),
catch(expand_goal(Body0, Target, Body1, HeadVars),
catch(expand_goal(Body0, Target, Body1, HeadVars, []),
error(type_error(callable, Pred), _),
( loader:print_goal_expansion_warning(Pred),
builtins:(Body1 = Body0)
@@ -726,9 +729,9 @@ subgoal_expansion(Goal, Module, ExpandedGoal) :-
).
:- non_counted_backtracking expand_subgoal/5.
:- non_counted_backtracking expand_subgoal/6.
expand_subgoal(UnexpandedGoals, MS, M, ExpandedGoals, HeadVars) :-
expand_subgoal(UnexpandedGoals, MS, M, ExpandedGoals, HeadVars, TGs) :-
strip_subst_module(UnexpandedGoals, M, Module, UnexpandedGoals0),
nonvar(UnexpandedGoals0),
complete_partial_goal(MS, UnexpandedGoals0, _, SuppArgs, UnexpandedGoals1),
@@ -740,7 +743,7 @@ expand_subgoal(UnexpandedGoals, MS, M, ExpandedGoals, HeadVars) :-
),
strip_subst_module(UnexpandedGoals3, Module, Module1, UnexpandedGoals4),
( inner_meta_specs(0, UnexpandedGoals4, _, MetaSpecs) ->
expand_module_names(UnexpandedGoals4, MetaSpecs, Module1, ExpandedGoals0, HeadVars)
expand_module_names(UnexpandedGoals4, MetaSpecs, Module1, ExpandedGoals0, HeadVars, TGs)
; ExpandedGoals0 = UnexpandedGoals4
),
'$compile_inline_or_expanded_goal'(ExpandedGoals0, SuppArgs, ExpandedGoals1, Module1, UnexpandedGoals0),
@@ -769,10 +772,10 @@ expand_module_name(ESG0, MS, M, ESG) :-
:- non_counted_backtracking eq_member/2.
eq_member(V, [L-_|Ls]) :-
eq_member(V-M, [L-M|Ls]) :-
V == L.
eq_member(V, [_|Ls]) :-
eq_member(V, Ls).
eq_member(V-M, [_|Ls]) :-
eq_member(V-M, Ls).
:- non_counted_backtracking qualified_spec/1.
@@ -782,11 +785,19 @@ qualified_spec(MS) :- integer(MS), MS >= 0.
:- non_counted_backtracking expand_meta_predicate_subgoals/5.
expand_meta_predicate_subgoals([SG | SGs], [MS | MSs], M, [ESG | ESGs], HeadVars) :-
expand_meta_predicate_subgoals([SG | SGs], [MS | MSs], M, [ESG | ESGs], HeadVars, TGs) :-
( var(SG) ->
( qualified_spec(MS) ->
( eq_member(SG, HeadVars) ->
( eq_member(SG-_, HeadVars) ->
ESG = SG
; eq_member(SG-TG, TGs),
% transitive goals come about from previous equalities:
% if SG was bound by (=)/2 to a potential goal TG earlier
% in the goal sequence, expand TG and substitute SG with it
% in this subgoal context. the binding to SG must not be
% changed.
expand_subgoal(TG, MS, M, ESG, HeadVars, TGs) ->
true
; expand_module_name(SG, MS, M, ESG)
)
; ESG = SG
@@ -795,26 +806,26 @@ expand_meta_predicate_subgoals([SG | SGs], [MS | MSs], M, [ESG | ESGs], HeadVars
expand_module_name(SG, MS, M, ESG)
; '$is_expanded_or_inlined'(SG) ->
ESG = SG
; expand_subgoal(SG, MS, M, ESG, HeadVars) ->
; expand_subgoal(SG, MS, M, ESG, HeadVars, TGs) ->
true
; integer(MS),
MS >= 0 ->
expand_module_name(SG, MS, M, ESG)
; SG = ESG
),
expand_meta_predicate_subgoals(SGs, MSs, M, ESGs, HeadVars).
expand_meta_predicate_subgoals(SGs, MSs, M, ESGs, HeadVars, TGs).
expand_meta_predicate_subgoals([], _, _, [], _).
expand_meta_predicate_subgoals([], _, _, [], _, _).
:- non_counted_backtracking expand_module_names/5.
:- non_counted_backtracking expand_module_names/6.
expand_module_names(Goals, MetaSpecs, Module, ExpandedGoals, HeadVars) :-
expand_module_names(Goals, MetaSpecs, Module, ExpandedGoals, HeadVars, TGs) :-
Goals =.. [GoalFunctor | SubGoals],
( GoalFunctor == (:),
SubGoals = [M, SubGoal] ->
expand_module_names(SubGoal, MetaSpecs, M, ExpandedSubGoal, HeadVars),
expand_module_names(SubGoal, MetaSpecs, M, ExpandedSubGoal, HeadVars, TGs),
expand_module_name(ExpandedSubGoal, 0, M, ExpandedGoals)
; expand_meta_predicate_subgoals(SubGoals, MetaSpecs, Module, ExpandedGoalList, HeadVars),
; expand_meta_predicate_subgoals(SubGoals, MetaSpecs, Module, ExpandedGoalList, HeadVars, TGs),
ExpandedGoals =.. [GoalFunctor | ExpandedGoalList]
).
@@ -822,26 +833,26 @@ expand_module_names(Goals, MetaSpecs, Module, ExpandedGoals, HeadVars) :-
:- non_counted_backtracking expand_goal/3.
expand_goal(UnexpandedGoals, Module, ExpandedGoals) :-
catch(loader:expand_goal(UnexpandedGoals, Module, ExpandedGoals, []),
catch(loader:expand_goal(UnexpandedGoals, Module, ExpandedGoals, [], []),
error(type_error(callable, _), _),
UnexpandedGoals = ExpandedGoals),
!.
:- non_counted_backtracking expand_goal/4.
:- non_counted_backtracking expand_goal/5.
expand_goal(UnexpandedGoals, Module, ExpandedGoals, HeadVars) :-
expand_goal(UnexpandedGoals, Module, ExpandedGoals, HeadVars, TGs) :-
( var(UnexpandedGoals) ->
expand_module_names(call(UnexpandedGoals), [0], Module, ExpandedGoals, HeadVars)
expand_module_names(call(UnexpandedGoals), [0], Module, ExpandedGoals, HeadVars, TGs)
; goal_expansion(UnexpandedGoals, Module, UnexpandedGoals1),
( Module \== user ->
goal_expansion(UnexpandedGoals1, user, Goals)
; Goals = UnexpandedGoals1
),
( expand_goal_cases(Goals, Module, ExpandedGoals, HeadVars) ->
( expand_goal_cases(Goals, Module, ExpandedGoals, HeadVars, TGs) ->
true
; predicate_property(Module:Goals, meta_predicate(MetaSpecs0)),
MetaSpecs0 =.. [_ | MetaSpecs] ->
expand_module_names(Goals, MetaSpecs, Module, ExpandedGoals, HeadVars)
expand_module_names(Goals, MetaSpecs, Module, ExpandedGoals, HeadVars, TGs)
; thread_goals(Goals, ExpandedGoals, (','))
; Goals = ExpandedGoals
)
@@ -874,28 +885,40 @@ expand_call_goal_(UnexpandedGoals, Module, ExpandedGoals) :-
)
).
:- non_counted_backtracking expand_goal_cases/4.
:- non_counted_backtracking transitive_goal/3.
expand_goal_cases((Goal0, Goals0), Module, ExpandedGoals, HeadVars) :-
( expand_goal(Goal0, Module, Goal1, HeadVars) ->
expand_goal(Goals0, Module, Goals1, HeadVars),
transitive_goal(G, TGs0, TGs1) :-
( G = (G1 = PotentialGoal),
callable(PotentialGoal),
subsumes_term(G1, PotentialGoal) ->
TGs1 = [G1-PotentialGoal|TGs0]
; TGs1 = TGs0
).
:- non_counted_backtracking expand_goal_cases/5.
expand_goal_cases((Goal0, Goals0), Module, ExpandedGoals, HeadVars, TGs) :-
( expand_goal(Goal0, Module, Goal1, HeadVars, TGs) ->
transitive_goal(Goal0, TGs, TGs1),
expand_goal(Goals0, Module, Goals1, HeadVars, TGs1),
thread_goals(Goal1, ExpandedGoals, Goals1, (','))
; expand_goal(Goals0, Module, Goals1, HeadVars),
; expand_goal(Goals0, Module, Goals1, HeadVars, TGs),
ExpandedGoals = (Goal0, Goals1)
).
expand_goal_cases((Goals0 -> Goals1), Module, ExpandedGoals, HeadVars) :-
expand_goal(Goals0, Module, ExpandedGoals0, HeadVars),
expand_goal(Goals1, Module, ExpandedGoals1, HeadVars),
expand_goal_cases((Goals0 -> Goals1), Module, ExpandedGoals, HeadVars, TGs) :-
expand_goal(Goals0, Module, ExpandedGoals0, HeadVars, TGs),
transitive_goal(ExpandedGoals0, TGs, TGs1),
expand_goal(Goals1, Module, ExpandedGoals1, HeadVars, TGs1),
ExpandedGoals = (ExpandedGoals0 -> ExpandedGoals1).
expand_goal_cases((Goals0 ; Goals1), Module, ExpandedGoals, HeadVars) :-
expand_goal(Goals0, Module, ExpandedGoals0, HeadVars),
expand_goal(Goals1, Module, ExpandedGoals1, HeadVars),
expand_goal_cases((Goals0 ; Goals1), Module, ExpandedGoals, HeadVars, TGs) :-
expand_goal(Goals0, Module, ExpandedGoals0, HeadVars, TGs),
expand_goal(Goals1, Module, ExpandedGoals1, HeadVars, TGs),
ExpandedGoals = (ExpandedGoals0 ; ExpandedGoals1).
expand_goal_cases((\+ Goals0), Module, ExpandedGoals, HeadVars) :-
expand_goal(Goals0, Module, Goals1, HeadVars),
expand_goal_cases((\+ Goals0), Module, ExpandedGoals, HeadVars, TGs) :-
expand_goal(Goals0, Module, Goals1, HeadVars, TGs),
ExpandedGoals = (\+ Goals1).
expand_goal_cases((Module:Goals0), _, ExpandedGoals, HeadVars) :-
expand_goal(Goals0, Module, Goals1, HeadVars),
expand_goal_cases((Module:Goals0), _, ExpandedGoals, HeadVars, TGs) :-
expand_goal(Goals0, Module, Goals1, HeadVars, TGs),
ExpandedGoals = (Module:Goals1).
:- non_counted_backtracking thread_goals/3.

1
src/machine/arithmetic_ops.rs
View File

@@ -1423,6 +1423,7 @@ mod tests {
use crate::machine::mock_wam::*;
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn arith_eval_by_metacall_tests() {
let mut wam = MachineState::new();
let mut op_dir = default_op_dir();

58
src/machine/compile.rs
View File

@@ -42,42 +42,35 @@ pub(super) fn bootstrapping_compile(
Ok(())
}
fn lower_bound_of_target_clause(skeleton: &PredicateSkeleton, target_pos: usize) -> usize {
fn lower_bound_of_target_clause(skeleton: &mut PredicateSkeleton, target_pos: usize) -> usize {
if target_pos == 0 {
return 0;
}
let arg_num = skeleton.clauses[target_pos - 1].opt_arg_index_key.arg_num();
debug_assert!(skeleton.clauses.len() >= 2);
if arg_num == 0 {
return target_pos - 1;
}
let index = target_pos - 1;
let mut index_loc_opt = None;
for index in (0..target_pos).rev() {
let current_arg_num = skeleton.clauses[index].opt_arg_index_key.arg_num();
if current_arg_num == 0 || current_arg_num != arg_num {
return index + 1;
}
if let Some(index_loc) = index_loc_opt {
let current_index_loc = skeleton.clauses[index]
let index = if let Some(index_loc) = skeleton.clauses[index]
.opt_arg_index_key
.switch_on_term_loc();
.switch_on_term_loc()
{
let search_result = skeleton.clauses.make_contiguous()
[0..skeleton.core.clause_assert_margin]
.partition_point(|clause_index_info| clause_index_info.clause_start > index_loc);
if Some(index_loc) != current_index_loc {
return index + 1;
if search_result < skeleton.core.clause_assert_margin {
search_result
} else {
skeleton.clauses.make_contiguous()[skeleton.core.clause_assert_margin..]
.partition_point(|clause_index_info| clause_index_info.clause_start < index_loc)
+ skeleton.core.clause_assert_margin
}
} else {
index_loc_opt = skeleton.clauses[index]
.opt_arg_index_key
.switch_on_term_loc();
}
}
index
};
0
index.clamp(0, skeleton.clauses.len() - 2)
}
fn derelictize_try_me_else(
@@ -1215,7 +1208,7 @@ fn print_overwrite_warning(
}
println!(
"Warning: overwriting {}/{} because the clauses are discontiguous",
"% Warning: overwriting {}/{} because the clauses are discontiguous",
key.0.as_str(),
key.1
);
@@ -1327,7 +1320,8 @@ impl<'a, LS: LoadState<'a>> Loader<'a, LS> {
.clause_clause_locs
.extend(&clause_clause_locs.make_contiguous()[0..]);
let skeleton = cg.skeleton;
let mut skeleton = cg.skeleton;
skeleton.core.is_dynamic = settings.is_dynamic();
self.add_extensible_predicate(key, skeleton, predicates.compilation_target);
}
@@ -1527,6 +1521,8 @@ impl<'a, LS: LoadState<'a>> Loader<'a, LS> {
let code_len = self.wam_prelude.code.len();
standalone_skeleton.clauses[0].clause_start += code_len;
let skeleton = match self
.wam_prelude
.indices
@@ -1539,8 +1535,8 @@ impl<'a, LS: LoadState<'a>> Loader<'a, LS> {
match append_or_prepend {
AppendOrPrepend::Append => {
let clause_index_info = standalone_skeleton.clauses.pop_back().unwrap();
skeleton.clauses.push_back(clause_index_info);
skeleton.clauses.push_back(clause_index_info);
skeleton.core.clause_clause_locs.push_back(code_len);
self.payload
@@ -2148,7 +2144,7 @@ impl<'a, LS: LoadState<'a>> Loader<'a, LS> {
.map(|skeleton| skeleton.predicate_info())
.unwrap_or_default();
let mut predicate_info = self
let predicate_info = self
.wam_prelude
.indices
.get_predicate_skeleton(&self.payload.predicates.compilation_target, &key)
@@ -2183,7 +2179,7 @@ impl<'a, LS: LoadState<'a>> Loader<'a, LS> {
if is_cross_module_clause && !local_predicate_info.is_extensible {
if predicate_info.is_multifile {
println!(
"Warning: overwriting multifile predicate {}:{}/{} because \
"% Warning: overwriting multifile predicate {}:{}/{} because \
it was not locally declared multifile.",
self.payload.predicates.compilation_target,
key.0.as_str(),
@@ -2210,8 +2206,6 @@ impl<'a, LS: LoadState<'a>> Loader<'a, LS> {
(0..skeleton.clauses.len()).map(Some).collect(),
false, // the builtin M:'$clause'/2 is never dynamic.
);
predicate_info.is_dynamic = false;
}
self.payload

1
src/machine/copier.rs
View File

@@ -398,6 +398,7 @@ mod tests {
use crate::machine::mock_wam::*;
#[test]
#[cfg_attr(miri, ignore = "blocked on atom_table.rs UB")]
fn copier_tests() {
let mut wam = MockWAM::new();

67
src/machine/dispatch.rs
View File

@@ -557,20 +557,29 @@ impl Machine {
}
let mut p = self.machine_st.p;
let mut arity = 0;
while self.code[p].is_head_instr() {
for r in self.code[p].registers() {
if let RegType::Temp(t) = r {
arity = std::cmp::max(arity, t);
}
}
p += 1;
}
let instr =
std::mem::replace(&mut self.code[p], Instruction::VerifyAttrInterrupt);
let instr = std::mem::replace(
&mut self.code[p],
Instruction::VerifyAttrInterrupt(arity),
);
self.code[VERIFY_ATTR_INTERRUPT_LOC] = instr;
self.machine_st.attr_var_init.cp = p;
}
&Instruction::VerifyAttrInterrupt => {
let (_, arity) = self.code[VERIFY_ATTR_INTERRUPT_LOC].to_name_and_arity();
let arity = std::cmp::max(arity, self.machine_st.num_of_args);
&Instruction::VerifyAttrInterrupt(arity) => {
// let (_, arity) = self.code[VERIFY_ATTR_INTERRUPT_LOC].to_name_and_arity();
// let arity = std::cmp::max(arity, self.machine_st.num_of_args);
self.run_verify_attr_interrupt(arity);
}
&Instruction::Add(ref a1, ref a2, t) => {
@@ -4147,6 +4156,14 @@ impl Machine {
try_or_throw!(self.machine_st, self.js_eval());
step_or_fail!(self, self.machine_st.p = self.machine_st.cp);
}
&Instruction::CallArgv => {
try_or_throw!(self.machine_st, self.argv());
step_or_fail!(self, self.machine_st.p += 1);
}
&Instruction::ExecuteArgv => {
try_or_throw!(self.machine_st, self.argv());
step_or_fail!(self, self.machine_st.p = self.machine_st.cp);
}
&Instruction::CallCurrentTime => {
self.current_time();
step_or_fail!(self, self.machine_st.p += 1);
@@ -4491,44 +4508,28 @@ impl Machine {
self.crypto_curve_scalar_mult();
step_or_fail!(self, self.machine_st.p = self.machine_st.cp);
}
#[cfg(feature = "crypto-full")]
&Instruction::CallEd25519Sign => {
self.ed25519_sign();
&Instruction::CallEd25519SignRaw => {
self.ed25519_sign_raw();
step_or_fail!(self, self.machine_st.p += 1);
}
#[cfg(feature = "crypto-full")]
&Instruction::ExecuteEd25519Sign => {
self.ed25519_sign();
&Instruction::ExecuteEd25519SignRaw => {
self.ed25519_sign_raw();
step_or_fail!(self, self.machine_st.p = self.machine_st.cp);
}
#[cfg(feature = "crypto-full")]
&Instruction::CallEd25519Verify => {
self.ed25519_verify();
&Instruction::CallEd25519VerifyRaw => {
self.ed25519_verify_raw();
step_or_fail!(self, self.machine_st.p += 1);
}
#[cfg(feature = "crypto-full")]
&Instruction::ExecuteEd25519Verify => {
self.ed25519_verify();
&Instruction::ExecuteEd25519VerifyRaw => {
self.ed25519_verify_raw();
step_or_fail!(self, self.machine_st.p = self.machine_st.cp);
}
#[cfg(feature = "crypto-full")]
&Instruction::CallEd25519NewKeyPair => {
self.ed25519_new_key_pair();
&Instruction::CallEd25519SeedToPublicKey => {
self.ed25519_seed_to_public_key();
step_or_fail!(self, self.machine_st.p += 1);
}
#[cfg(feature = "crypto-full")]
&Instruction::ExecuteEd25519NewKeyPair => {
self.ed25519_new_key_pair();
step_or_fail!(self, self.machine_st.p = self.machine_st.cp);
}
#[cfg(feature = "crypto-full")]
&Instruction::CallEd25519KeyPairPublicKey => {
self.ed25519_key_pair_public_key();
step_or_fail!(self, self.machine_st.p += 1);
}
#[cfg(feature = "crypto-full")]
&Instruction::ExecuteEd25519KeyPairPublicKey => {
self.ed25519_key_pair_public_key();
&Instruction::ExecuteEd25519SeedToPublicKey => {
self.ed25519_seed_to_public_key();
step_or_fail!(self, self.machine_st.p = self.machine_st.cp);
}
&Instruction::CallCurve25519ScalarMult => {

1
src/machine/gc.rs
View File

@@ -369,6 +369,7 @@ mod tests {
use crate::machine::mock_wam::*;
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn heap_marking_tests() {
let mut wam = MockWAM::new();

8
src/machine/lib_machine.rs
View File

@@ -236,6 +236,7 @@ mod tests {
use crate::machine::{QueryMatch, QueryResolution, Value};
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn programatic_query() {
let mut machine = Machine::new_lib();
@@ -275,6 +276,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn failing_query() {
let mut machine = Machine::new_lib();
let query = String::from(r#"triple("a",P,"b")."#);
@@ -288,6 +290,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore)]
fn complex_results() {
let mut machine = Machine::new_lib();
machine.load_module_string(
@@ -344,6 +347,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn empty_predicate() {
let mut machine = Machine::new_lib();
machine.load_module_string(
@@ -359,6 +363,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn list_results() {
let mut machine = Machine::new_lib();
machine.load_module_string(
@@ -387,6 +392,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn consult() {
let mut machine = Machine::new_lib();
@@ -445,6 +451,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn integration_test() {
let mut machine = Machine::new_lib();
@@ -495,6 +502,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn findall() {
let mut machine = Machine::new_lib();

50
src/machine/load_state.rs
View File

@@ -466,24 +466,48 @@ impl<'a, LS: LoadState<'a>> Loader<'a, LS> {
None => return,
};
for (key, code_index) in removed_module.code_dir.iter_mut() {
match removed_module
.local_extensible_predicates
.get(&(CompilationTarget::User, *key))
let mut skipped_local_predicates = IndexSet::with_hasher(FxBuildHasher::default());
for ((local_compilation_target, key), skeleton) in
removed_module.local_extensible_predicates.iter()
{
Some(skeleton) if skeleton.is_multifile => continue,
_ => {}
skipped_local_predicates.insert(key);
if skeleton.is_multifile {
continue;
}
if let Some(code_index) = removed_module.code_dir.get_mut(key) {
if let Some(global_skeleton) = self
.wam_prelude
.indices
.get_predicate_skeleton(local_compilation_target, key)
{
let old_index_ptr = code_index.replace(if global_skeleton.core.is_dynamic {
IndexPtr::dynamic_undefined()
} else {
IndexPtr::undefined()
});
self.payload.retraction_info.push_record(
RetractionRecord::ReplacedModulePredicate(module_name, *key, old_index_ptr),
);
}
}
}
for (key, code_index) in removed_module.code_dir.iter_mut() {
if skipped_local_predicates.contains(key) {
continue;
}
if !code_index.is_undefined() && !code_index.is_dynamic_undefined() {
let old_index_ptr = code_index.replace(IndexPtr::undefined());
self.payload
.retraction_info
.push_record(RetractionRecord::ReplacedModulePredicate(
module_name,
*key,
old_index_ptr,
));
self.payload.retraction_info.push_record(
RetractionRecord::ReplacedModulePredicate(module_name, *key, old_index_ptr),
);
}
}
for (key, skeleton) in removed_module.extensible_predicates.drain(..) {

44
src/machine/loader.rs
View File

@@ -1833,9 +1833,33 @@ impl Machine {
}
pub(crate) fn scoped_clause_to_evacuable(&mut self) -> CallResult {
let module_name = cell_as_atom!(self
.machine_st
.store(self.machine_st.deref(self.machine_st.registers[1])));
let target = self.deref_register(1);
let mut permission_error = || {
let err = self.machine_st.permission_error(
Permission::Modify,
atom!("static_procedure"),
functor_stub(atom!(":"), 2)
.into_iter()
.collect::<MachineStub>(),
);
self.machine_st
.error_form(err, functor_stub(atom!("load"), 1))
};
let module_name = read_heap_cell!(target,
(HeapCellValueTag::Atom, (name, arity)) => {
if arity == 0 {
name
} else {
return Err(permission_error());
}
}
_ => {
return Err(permission_error());
}
);
let loader = self.loader_from_heap_evacuable(temp_v!(3));
@@ -1948,11 +1972,13 @@ impl Machine {
_ => CompilationTarget::Module(module_name),
};
let stub_gen = || match append_or_prepend {
AppendOrPrepend::Append => functor_stub(atom!("assertz"), 1),
AppendOrPrepend::Prepend => functor_stub(atom!("asserta"), 1),
let key = match append_or_prepend {
AppendOrPrepend::Append => (atom!("assertz"), 1),
AppendOrPrepend::Prepend => (atom!("asserta"), 1),
};
let stub_gen = || functor_stub(key.0, key.1);
let head = self.deref_register(2);
if head.is_var() {
@@ -1991,7 +2017,11 @@ impl Machine {
.map(|code_idx| code_idx.get_tag())
.unwrap_or(IndexPtrTag::DynamicUndefined);
idx_tag == IndexPtrTag::DynamicUndefined || idx_tag == IndexPtrTag::Undefined
if idx_tag == IndexPtrTag::Index {
return Err(SessionError::CannotOverwriteStaticProcedure((name, arity)));
} else {
idx_tag == IndexPtrTag::Undefined || idx_tag == IndexPtrTag::DynamicUndefined
}
} else if is_builtin {
return Err(SessionError::CannotOverwriteBuiltIn((name, arity)));
} else {

8
src/machine/machine_errors.rs
View File

@@ -488,6 +488,13 @@ impl MachineState {
.into_iter()
.collect::<MachineStub>(),
),
SessionError::CannotOverwriteStaticProcedure(key) => self.permission_error(
Permission::Modify,
atom!("static_procedure"),
functor_stub(key.0, key.1)
.into_iter()
.collect::<MachineStub>(),
),
SessionError::CannotOverwriteBuiltInModule(module) => {
self.permission_error(Permission::Modify, atom!("static_module"), module)
}
@@ -1005,6 +1012,7 @@ pub enum SessionError {
CompilationError(CompilationError),
CannotOverwriteBuiltIn(PredicateKey),
CannotOverwriteBuiltInModule(Atom),
CannotOverwriteStaticProcedure(PredicateKey),
ExistenceError(ExistenceError),
ModuleDoesNotContainExport(Atom, PredicateKey),
ModuleCannotImportSelf(Atom),

9
src/machine/machine_state_impl.rs
View File

@@ -1450,10 +1450,15 @@ impl MachineState {
a1.as_var().unwrap(),
);
}
(HeapCellValueTag::Cons | HeapCellValueTag::Fixnum |
HeapCellValueTag::F64) if arity != 0 => {
let err = self.type_error(ValidType::Atom, store_name);
return Err(self.error_form(err, stub_gen())); // 8.5.1.3 e)
}
_ => {
let err = self.type_error(ValidType::Atomic, store_name);
return Err(self.error_form(err, stub_gen()));
} // 8.5.1.3 c)
return Err(self.error_form(err, stub_gen())); // 8.5.1.3 c)
}
);
}
_ => {

2
src/machine/mock_wam.rs
View File

@@ -260,6 +260,7 @@ mod tests {
use super::*;
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn unify_tests() {
let mut wam = MachineState::new();
let mut op_dir = default_op_dir();
@@ -481,6 +482,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn test_unify_with_occurs_check() {
let mut wam = MachineState::new();
let mut op_dir = default_op_dir();

51
src/machine/mod.rs
View File

@@ -228,7 +228,7 @@ impl Machine {
self.machine_st.throw_exception(err);
}
fn run_module_predicate(
pub fn run_module_predicate(
&mut self,
module_name: Atom,
key: PredicateKey,
@@ -307,29 +307,6 @@ impl Machine {
}
}
pub fn run_top_level(
&mut self,
module_name: Atom,
key: PredicateKey,
) -> std::process::ExitCode {
let mut arg_pstrs = vec![];
for arg in env::args() {
arg_pstrs.push(put_complete_string(
&mut self.machine_st.heap,
&arg,
&self.machine_st.atom_tbl,
));
}
self.machine_st.registers[1] = heap_loc_as_cell!(iter_to_heap_list(
&mut self.machine_st.heap,
arg_pstrs.into_iter()
));
self.run_module_predicate(module_name, key)
}
pub fn set_user_input(&mut self, input: String) {
self.user_input = Stream::from_owned_string(input, &mut self.machine_st.arena);
}
@@ -414,7 +391,7 @@ impl Machine {
self.code.extend(vec![
Instruction::BreakFromDispatchLoop,
Instruction::InstallVerifyAttr,
Instruction::VerifyAttrInterrupt,
Instruction::VerifyAttrInterrupt(0),
Instruction::BreakFromDispatchLoop, // the location of LIB_QUERY_SUCCESS
Instruction::ExecuteTermGreaterThan,
Instruction::ExecuteTermLessThan,
@@ -925,8 +902,8 @@ impl Machine {
self.machine_st.hb = self.machine_st.heap.len();
self.machine_st.oip = 0;
self.machine_st.iip = 0;
// self.machine_st.oip = 0;
// self.machine_st.iip = 0;
}
self.machine_st.p += offset;
@@ -1010,8 +987,22 @@ impl Machine {
self.machine_st.heap.truncate(target_h);
self.machine_st.oip = 0;
self.machine_st.iip = 0;
// these registers don't need to be reset here and MUST
// NOT be (nor in indexed_try! trust_epilogue is an
// exception, see next paragraph)! oip could be reset
// without any adverse effects but iip is needed by
// get_clause_p to find the last executed clause/2 clause.
// trust_epilogue must reset these for the sake of
// subsequent predicates beginning with
// switch_to_term. get_clause_p copes by checking
// self.machine_st.b > self.machine.e: if true, it is safe
// to use self.machine_st.iip; if false, use the choice
// point left at the top of the stack by '$clause'
// (specifically its biip value).
// self.machine_st.oip = 0;
// self.machine_st.iip = 0;
} else {
self.trust_epilogue(offset);
}
@@ -1116,7 +1107,7 @@ impl Machine {
}
Unknown::Warn => {
println!(
"warning: predicate {}/{} is undefined",
"% Warning: predicate {}/{} is undefined",
name.as_str(),
arity
);

135
src/machine/partial_string.rs
View File

@@ -764,13 +764,29 @@ pub fn compare_pstr_prefixes<'a>(
if i1.focus == empty_list_as_cell!() {
PStrCmpResult::Ordered(Ordering::Less)
} else {
PStrCmpResult::SecondIterContinuable(r2.unwrap().iteratee)
let r2_step = r2.unwrap();
// advance i2 to the next character so the same character
// isn't repeated
if matches!(r2_step.iteratee, PStrIteratee::Char(..)) {
cycle_detection_step(i2, i1, &r2_step);
}
PStrCmpResult::SecondIterContinuable(r2_step.iteratee)
}
} else if r2_at_end {
if i2.focus == empty_list_as_cell!() {
PStrCmpResult::Ordered(Ordering::Greater)
} else {
PStrCmpResult::FirstIterContinuable(r1.unwrap().iteratee)
let r1_step = r1.unwrap();
// advance i1 to the next character so the same character
// isn't repeated
if matches!(r1_step.iteratee, PStrIteratee::Char(..)) {
cycle_detection_step(i1, i2, &r1_step);
}
PStrCmpResult::FirstIterContinuable(r1_step.iteratee)
}
} else if i1.is_continuable() && i2.is_continuable() {
PStrCmpResult::Ordered(Ordering::Equal)
@@ -785,6 +801,7 @@ mod test {
use crate::machine::mock_wam::*;
#[test]
#[cfg_attr(miri, ignore = "blocked on streams.rs UB")]
fn pstr_iter_tests() {
let mut wam = MockWAM::new();
@@ -1089,9 +1106,119 @@ mod test {
Some(PStrIteratee::PStrSegment(2, atom!("abc"), 1))
);
// assert!(iter.next().is_none());
for _ in iter {}
}
// #2293, test1.
wam.machine_st.heap.clear();
wam.machine_st.heap.push(atom_as_cstr_cell!(atom!("a ")));
wam.machine_st.heap.push(heap_loc_as_cell!(1));
wam.machine_st.heap.push(list_loc_as_cell!(3));
wam.machine_st.heap.push(char_as_cell!(' '));
wam.machine_st.heap.push(empty_list_as_cell!());
unify!(wam.machine_st, list_loc_as_cell!(1), heap_loc_as_cell!(0));
assert!(!wam.machine_st.fail);
// #2293, test2.
wam.machine_st.heap.clear();
wam.machine_st.heap.push(atom_as_cstr_cell!(atom!(" a")));
wam.machine_st.heap.push(char_as_cell!(' '));
wam.machine_st.heap.push(list_loc_as_cell!(3));
wam.machine_st.heap.push(heap_loc_as_cell!(3));
wam.machine_st.heap.push(empty_list_as_cell!());
unify!(wam.machine_st, list_loc_as_cell!(1), heap_loc_as_cell!(0));
assert!(!wam.machine_st.fail);
// #2293, test3.
wam.machine_st.heap.clear();
wam.machine_st.heap.push(atom_as_cstr_cell!(atom!("a b")));
wam.machine_st.heap.push(heap_loc_as_cell!(1));
wam.machine_st.heap.push(list_loc_as_cell!(3));
wam.machine_st.heap.push(char_as_cell!(' '));
wam.machine_st.heap.push(list_loc_as_cell!(5));
wam.machine_st.heap.push(heap_loc_as_cell!(5));
wam.machine_st.heap.push(empty_list_as_cell!());
unify!(wam.machine_st, list_loc_as_cell!(1), heap_loc_as_cell!(0));
assert!(!wam.machine_st.fail);
// #2293, test4.
wam.machine_st.heap.clear();
wam.machine_st.heap.push(atom_as_cstr_cell!(atom!(" a ")));
wam.machine_st.heap.push(char_as_cell!(' '));
wam.machine_st.heap.push(list_loc_as_cell!(3));
wam.machine_st.heap.push(heap_loc_as_cell!(3));
wam.machine_st.heap.push(list_loc_as_cell!(5));
wam.machine_st.heap.push(char_as_cell!(' '));
wam.machine_st.heap.push(empty_list_as_cell!());
unify!(wam.machine_st, list_loc_as_cell!(1), heap_loc_as_cell!(0));
assert!(!wam.machine_st.fail);
// #2293, test5.
wam.machine_st.heap.clear();
wam.machine_st.heap.push(atom_as_cstr_cell!(atom!(" a bc")));
wam.machine_st.heap.push(char_as_cell!(' '));
wam.machine_st.heap.push(list_loc_as_cell!(3));
wam.machine_st.heap.push(heap_loc_as_cell!(3));
wam.machine_st.heap.push(list_loc_as_cell!(5));
wam.machine_st.heap.push(char_as_cell!(' '));
wam.machine_st.heap.push(heap_loc_as_cell!(6));
unify!(wam.machine_st, list_loc_as_cell!(1), heap_loc_as_cell!(0));
assert!(!wam.machine_st.fail);
// #2293, test6.
wam.machine_st.heap.clear();
wam.machine_st.heap.push(atom_as_cstr_cell!(atom!("abc")));
wam.machine_st.heap.push(heap_loc_as_cell!(1));
wam.machine_st.heap.push(list_loc_as_cell!(3));
wam.machine_st.heap.push(char_as_cell!('b'));
wam.machine_st.heap.push(list_loc_as_cell!(5));
wam.machine_st.heap.push(heap_loc_as_cell!(5));
wam.machine_st.heap.push(empty_list_as_cell!());
unify!(wam.machine_st, list_loc_as_cell!(1), heap_loc_as_cell!(0));
assert!(!wam.machine_st.fail);
// #2293, test7.
wam.machine_st.heap.clear();
wam.machine_st.heap.push(atom_as_cstr_cell!(atom!("abcde")));
wam.machine_st.heap.push(char_as_cell!('a'));
wam.machine_st.heap.push(list_loc_as_cell!(3));
wam.machine_st.heap.push(heap_loc_as_cell!(3));
wam.machine_st.heap.push(list_loc_as_cell!(5));
wam.machine_st.heap.push(char_as_cell!('c'));
wam.machine_st.heap.push(list_loc_as_cell!(7));
wam.machine_st.heap.push(heap_loc_as_cell!(7));
wam.machine_st.heap.push(list_loc_as_cell!(9));
wam.machine_st.heap.push(char_as_cell!('e'));
wam.machine_st.heap.push(empty_list_as_cell!());
unify!(wam.machine_st, list_loc_as_cell!(1), heap_loc_as_cell!(0));
assert!(!wam.machine_st.fail);
}
}

31
src/machine/preprocessor.rs
View File

@@ -565,21 +565,6 @@ impl Preprocessor {
}
}
/*
fn try_term_to_query<'a, LS: LoadState<'a>>(
&mut self,
loader: &mut Loader<'a, LS>,
terms: Vec<Term>,
cut_context: CutContext,
) -> Result<TopLevel, CompilationError> {
Ok(TopLevel::Query(self.setup_query(
loader,
terms,
cut_context,
)?))
}
*/
pub(super) fn try_term_to_tl<'a, LS: LoadState<'a>>(
&mut self,
loader: &mut Loader<'a, LS>,
@@ -607,20 +592,4 @@ impl Preprocessor {
}
}
}
/*
fn try_terms_to_tls<'a, I: IntoIterator<Item = Term>, LS: LoadState<'a>>(
&mut self,
loader: &mut Loader<'a, LS>,
terms: I,
) -> Result<VecDeque<TopLevel>, CompilationError> {
let mut results = VecDeque::new();
for term in terms.into_iter() {
results.push_back(self.try_term_to_tl(loader, term)?);
}
Ok(results)
}
*/
}

10
src/machine/project_attributes.pl
View File

@@ -1,4 +1,4 @@
:- module('$project_atts', [copy_term/3]).
:- module('$project_atts', []).
:- use_module(library(dcgs)).
:- use_module(library(error), [can_be/2]).
@@ -100,14 +100,6 @@ gather_residual_goals([V|Vs]) -->
delete_all_attributes_from_var(V) :- '$delete_all_attributes_from_var'(V).
copy_term(Term, Copy, Gs) :-
can_be(list, Gs),
findall(Term-Rs, term_residual_goals(Term,Rs), [Copy-Gs]),
( var(Gs) ->
Gs = []
; true
).
term_residual_goals(Term,Rs) :-
'$term_attributed_variables'(Term, Vs),
phrase(gather_residual_goals(Vs), Rs),

10
src/machine/stack.rs
View File

@@ -189,7 +189,7 @@ impl Stack {
for idx in 0..num_cells {
ptr::write(
(new_ptr as usize + offset) as *mut HeapCellValue,
new_ptr.add(offset) as *mut HeapCellValue,
stack_loc_as_cell!(AndFrame, e, idx + 1),
);
@@ -203,6 +203,10 @@ impl Stack {
}
}
pub(crate) fn top(&self) -> usize {
unsafe { (*self.buf.ptr.get()) as usize - self.buf.base as usize }
}
pub(crate) fn allocate_or_frame(&mut self, num_cells: usize) -> usize {
let frame_size = OrFrame::size_of(num_cells);
@@ -238,7 +242,8 @@ impl Stack {
#[inline(always)]
pub(crate) fn index_and_frame_mut(&mut self, e: usize) -> &mut AndFrame {
unsafe {
let ptr = self.buf.base as usize + e;
// This is doing alignment wrong
let ptr = self.buf.base.add(e);
&mut *(ptr as *mut AndFrame)
}
}
@@ -276,6 +281,7 @@ mod tests {
use crate::machine::mock_wam::*;
#[test]
#[cfg_attr(miri, ignore)]
fn stack_tests() {
let mut wam = MockWAM::new();

1
src/machine/streams.rs
View File

@@ -469,6 +469,7 @@ macro_rules! arena_allocated_impl_for_stream {
#[inline]
fn copy_to_arena(self, dst: *mut Self) -> Self::PtrToAllocated {
unsafe {
// Miri seems to hit this a lot
ptr::write(dst, self);
TypedArenaPtr::new(dst as *mut Self)
}

188
src/machine/system_calls.rs
View File

@@ -81,14 +81,11 @@ use ring::rand::{SecureRandom, SystemRandom};
use ring::{digest, hkdf, pbkdf2};
#[cfg(feature = "crypto-full")]
use ring::{
aead,
signature::{self, KeyPair},
};
use ring::aead;
use ripemd160::{Digest, Ripemd160};
use sha3::{Sha3_224, Sha3_256, Sha3_384, Sha3_512};
use crrl::{secp256k1, x25519};
use crrl::{ed25519, secp256k1, x25519};
#[cfg(feature = "tls")]
use native_tls::{Identity, TlsAcceptor, TlsConnector};
@@ -1171,43 +1168,12 @@ impl Machine {
.get_predicate_skeleton(&compilation_target, &key)
.unwrap();
if self.machine_st.b > self.machine_st.e {
let or_frame = self.machine_st.stack.index_or_frame(self.machine_st.b);
let bp = or_frame.prelude.bp;
match &self.code[bp] {
Instruction::IndexingCode(ref indexing_code) => {
match &indexing_code[or_frame.prelude.boip as usize] {
IndexingLine::IndexedChoice(ref indexed_choice) => {
let p = or_frame.prelude.biip as usize - 1;
match &indexed_choice[p] {
&IndexedChoiceInstruction::Try(offset)
| &IndexedChoiceInstruction::Retry(offset)
| &IndexedChoiceInstruction::DefaultRetry(offset) => {
let clause_clause_loc = skeleton.core.clause_clause_locs[p];
(clause_clause_loc, bp + offset)
}
&IndexedChoiceInstruction::Trust(_)
| &IndexedChoiceInstruction::DefaultTrust(_) => {
unreachable!()
}
}
}
_ => {
unreachable!()
}
}
}
_ => unreachable!(),
}
} else {
let module_name = match compilation_target {
CompilationTarget::User => atom!("builtins"),
CompilationTarget::Module(target) => target,
};
let bp = self
let mut bp = self
.indices
.get_predicate_code_index(atom!("$clause"), 2, module_name)
.and_then(|idx| idx.local())
@@ -1228,6 +1194,7 @@ impl Machine {
};
}
loop {
match &self.code[bp] {
Instruction::IndexingCode(ref indexing_code) => {
let indexing_code_ptr = match &indexing_code[0] {
@@ -1263,14 +1230,38 @@ impl Machine {
match &indexing_code[boip] {
IndexingLine::IndexedChoice(indexed_choice) => {
let p = if self.machine_st.b > self.machine_st.e {
// this means the last
// self.machine_st.iip value has yet
// to be overwritten by the Trust
// instruction. In this case, return
// it.
self.machine_st.iip as usize
} else {
// otherwise, read the '$clause'
// choicepoint from the top of the
// stack. this is very volatile in
// that it depends on '$clause'
// immediately preceding
// '$get_clause_p', which cannot be
// the last clause of the retract
// helper to delay deallocation of its
// environment frame.
let clause_b = self.machine_st.stack.top();
self.machine_st.stack.index_or_frame(clause_b).prelude.biip as usize
};
return (
skeleton.core.clause_clause_locs.back().cloned().unwrap(),
bp + indexed_choice.back().unwrap().offset(),
skeleton.core.clause_clause_locs[p],
bp + indexed_choice[p].offset(),
);
}
_ => unreachable!(),
}
}
&Instruction::RevJmpBy(offset) => {
bp -= offset;
}
_ => {
return (
skeleton.core.clause_clause_locs.back().cloned().unwrap(),
@@ -3501,6 +3492,12 @@ impl Machine {
Some(Ok(c)) => {
string.push(c);
}
Some(Err(e)) => {
let stub = functor_stub(atom!("$get_n_chars"), 3);
let err = self.machine_st.session_error(SessionError::from(e));
return Err(self.machine_st.error_form(err, stub));
}
_ => {
break;
}
@@ -4291,18 +4288,18 @@ impl Machine {
let address_string = address_sink.as_str(); //to_string();
let address: Url = address_string.parse().unwrap();
let client = reqwest::blocking::Client::builder().build().unwrap();
let client = reqwest::Client::builder().build().unwrap();
// request
let mut req = reqwest::blocking::Request::new(method, address);
let mut req = reqwest::Request::new(method, address);
*req.headers_mut() = headers;
if !bytes.is_empty() {
*req.body_mut() = Some(reqwest::blocking::Body::from(bytes));
*req.body_mut() = Some(reqwest::Body::from(bytes));
}
// do it!
match client.execute(req) {
match futures::executor::block_on(client.execute(req)) {
Ok(resp) => {
// status code
let status = resp.status().as_u16();
@@ -4339,7 +4336,7 @@ impl Machine {
self.machine_st.registers[6]
);
// body
let reader = resp.bytes().unwrap().reader();
let reader = futures::executor::block_on(resp.bytes()).unwrap().reader();
let mut stream = Stream::from_http_stream(
AtomTable::build_with(&self.machine_st.atom_tbl, &address_string),
@@ -4953,6 +4950,27 @@ impl Machine {
}
}
#[inline(always)]
pub(crate) fn argv(&mut self) -> CallResult {
let args = self.deref_register(1);
let mut args_pstrs = vec![];
for arg in env::args() {
args_pstrs.push(put_complete_string(
&mut self.machine_st.heap,
&arg,
&self.machine_st.atom_tbl,
));
}
let cell = heap_loc_as_cell!(iter_to_heap_list(
&mut self.machine_st.heap,
args_pstrs.into_iter()
));
unify!(self.machine_st, args, cell);
Ok(())
}
#[inline(always)]
pub(crate) fn current_time(&mut self) {
let timestamp = self.systemtime_to_timestamp(SystemTime::now());
@@ -5721,11 +5739,11 @@ impl Machine {
#[inline(always)]
pub(super) fn restore_instr_at_verify_attr_interrupt(&mut self) {
match &self.code[VERIFY_ATTR_INTERRUPT_LOC] {
&Instruction::VerifyAttrInterrupt => {}
&Instruction::VerifyAttrInterrupt(_) => {}
_ => {
let instr = mem::replace(
&mut self.code[VERIFY_ATTR_INTERRUPT_LOC],
Instruction::VerifyAttrInterrupt,
Instruction::VerifyAttrInterrupt(0),
);
self.code[self.machine_st.attr_var_init.cp] = instr;
@@ -6520,10 +6538,8 @@ impl Machine {
);
if had_zero_port {
self.machine_st.unify_fixnum(
Fixnum::build_with(port as i64),
self.machine_st.registers[2],
);
self.machine_st
.unify_fixnum(Fixnum::build_with(port as i64), self.deref_register(2));
}
Ok(())
@@ -7625,33 +7641,16 @@ impl Machine {
unify!(self.machine_st, self.machine_st.registers[4], uncompressed);
}
#[cfg(feature = "crypto-full")]
#[inline(always)]
pub(crate) fn ed25519_new_key_pair(&mut self) {
let pkcs8_bytes = signature::Ed25519KeyPair::generate_pkcs8(rng()).unwrap();
let complete_string = self.u8s_to_string(pkcs8_bytes.as_ref());
pub(crate) fn ed25519_seed_to_public_key(&mut self) {
let stub_gen = || functor_stub(atom!("ed25519_seed_keypair"), 2);
let seed_bytes = self
.machine_st
.integers_to_bytevec(self.machine_st.registers[1], stub_gen);
unify!(
self.machine_st,
self.machine_st.registers[1],
complete_string
)
}
let skey = ed25519::PrivateKey::from_seed(&seed_bytes);
#[cfg(feature = "crypto-full")]
#[inline(always)]
pub(crate) fn ed25519_key_pair_public_key(&mut self) {
let bytes = self.string_encoding_bytes(self.machine_st.registers[1], atom!("octet"));
let key_pair = match signature::Ed25519KeyPair::from_pkcs8(&bytes) {
Ok(kp) => kp,
_ => {
self.machine_st.fail = true;
return;
}
};
let complete_string = self.u8s_to_string(key_pair.public_key().as_ref());
let complete_string = self.u8s_to_string(skey.public_key.encoded.as_ref());
unify!(
self.machine_st,
@@ -7660,22 +7659,19 @@ impl Machine {
);
}
#[cfg(feature = "crypto-full")]
#[inline(always)]
pub(crate) fn ed25519_sign(&mut self) {
let key = self.string_encoding_bytes(self.machine_st.registers[1], atom!("octet"));
pub(crate) fn ed25519_sign_raw(&mut self) {
let stub_gen = || functor_stub(atom!("ed25519_sign"), 4);
let seed_bytes = self
.machine_st
.integers_to_bytevec(self.machine_st.registers[1], stub_gen);
let skey = ed25519::PrivateKey::from_seed(&seed_bytes);
let encoding = cell_as_atom!(self.deref_register(3));
let data = self.string_encoding_bytes(self.machine_st.registers[2], encoding);
let key_pair = match signature::Ed25519KeyPair::from_pkcs8(&key) {
Ok(kp) => kp,
_ => {
self.machine_st.fail = true;
return;
}
};
let sig = key_pair.sign(&data);
let sig = skey.sign_raw(&data);
let sig_list = heap_loc_as_cell!(iter_to_heap_list(
&mut self.machine_st.heap,
@@ -7687,25 +7683,21 @@ impl Machine {
unify!(self.machine_st, self.machine_st.registers[4], sig_list);
}
#[cfg(feature = "crypto-full")]
#[inline(always)]
pub(crate) fn ed25519_verify(&mut self) {
let key = self.string_encoding_bytes(self.machine_st.registers[1], atom!("octet"));
pub(crate) fn ed25519_verify_raw(&mut self) {
let key_bytes = self.string_encoding_bytes(self.machine_st.registers[1], atom!("octet"));
let pkey = ed25519::PublicKey::decode(&key_bytes).unwrap();
let encoding = cell_as_atom!(self.deref_register(3));
let data = self.string_encoding_bytes(self.machine_st.registers[2], encoding);
let stub_gen = || functor_stub(atom!("ed25519_verify"), 5);
let stub_gen = || functor_stub(atom!("ed25519_verify"), 4);
let signature = self
.machine_st
.integers_to_bytevec(self.machine_st.registers[4], stub_gen);
let peer_public_key = signature::UnparsedPublicKey::new(&signature::ED25519, &key);
match peer_public_key.verify(&data, &signature) {
Ok(_) => {}
_ => {
self.machine_st.fail = true;
}
}
self.machine_st.fail = !pkey.verify_raw(&signature, &data);
}
#[inline(always)]

178
src/machine/unify.rs
View File

@@ -173,6 +173,98 @@ pub(crate) trait Unifier: DerefMut<Target = MachineState> {
let mut pstr_iter1 = HeapPStrIter::new(&machine_st.heap, s1);
let mut pstr_iter2 = HeapPStrIter::new(&machine_st.heap, s1 + 1);
fn unify_sequence(
machine_st: &mut MachineState,
iter: PStrIteratee,
source_cell: HeapCellValue,
) -> bool {
match iter {
PStrIteratee::Char(focus, _) => {
machine_st.pdl.push(machine_st.heap[focus]);
machine_st.pdl.push(source_cell);
}
PStrIteratee::PStrSegment(focus, _, n) => {
read_heap_cell!(machine_st.heap[focus],
(HeapCellValueTag::CStr | HeapCellValueTag::PStr, pstr_atom) => {
if focus < machine_st.heap.len() - 2 {
machine_st.heap.pop();
machine_st.heap.pop();
}
if n == 0 {
let target_cell = match machine_st.heap[focus].get_tag() {
HeapCellValueTag::CStr => {
atom_as_cstr_cell!(pstr_atom)
}
HeapCellValueTag::PStr => {
pstr_loc_as_cell!(focus)
}
_ => {
unreachable!()
}
};
machine_st.pdl.push(target_cell);
machine_st.pdl.push(source_cell);
} else {
let h_len = machine_st.heap.len();
machine_st.heap.push(pstr_offset_as_cell!(focus));
machine_st.heap.push(fixnum_as_cell!(
Fixnum::build_with(n as i64)
));
machine_st.pdl.push(pstr_loc_as_cell!(h_len));
machine_st.pdl.push(source_cell);
}
return true;
}
(HeapCellValueTag::PStrOffset, pstr_loc) => {
let n0 = cell_as_fixnum!(machine_st.heap[focus+1])
.get_num() as usize;
if pstr_loc < machine_st.heap.len() - 2 {
machine_st.heap.pop();
machine_st.heap.pop();
}
if n == n0 {
machine_st.pdl.push(pstr_loc_as_cell!(focus));
machine_st.pdl.push(source_cell);
} else {
let h_len = machine_st.heap.len();
machine_st.heap.push(pstr_offset_as_cell!(pstr_loc));
machine_st.heap.push(fixnum_as_cell!(
Fixnum::build_with(n as i64)
));
machine_st.pdl.push(pstr_loc_as_cell!(h_len));
machine_st.pdl.push(source_cell);
}
return true;
}
_ => {
}
);
if focus < machine_st.heap.len() - 2 {
machine_st.heap.pop();
machine_st.heap.pop();
}
machine_st.pdl.push(machine_st.heap[focus]);
machine_st.pdl.push(source_cell);
return true;
}
}
false
}
match compare_pstr_prefixes(&mut pstr_iter1, &mut pstr_iter2) {
PStrCmpResult::Ordered(Ordering::Equal) => {}
PStrCmpResult::Ordered(Ordering::Less) => {
@@ -229,90 +321,14 @@ pub(crate) trait Unifier: DerefMut<Target = MachineState> {
break 'outer;
}
}
(HeapCellValueTag::CStr | HeapCellValueTag::PStrLoc) => {
unify_sequence(machine_st, chars_iter.item.unwrap(), focus);
return;
}
(HeapCellValueTag::AttrVar | HeapCellValueTag::Var, h) => {
match chars_iter.item.unwrap() {
PStrIteratee::Char(focus, _) => {
machine_st.pdl.push(machine_st.heap[focus]);
machine_st.pdl.push(heap_loc_as_cell!(h));
}
PStrIteratee::PStrSegment(focus, _, n) => {
read_heap_cell!(machine_st.heap[focus],
(HeapCellValueTag::CStr | HeapCellValueTag::PStr, pstr_atom) => {
if focus < machine_st.heap.len() - 2 {
machine_st.heap.pop();
machine_st.heap.pop();
}
if n == 0 {
let target_cell = match machine_st.heap[focus].get_tag() {
HeapCellValueTag::CStr => {
atom_as_cstr_cell!(pstr_atom)
}
HeapCellValueTag::PStr => {
pstr_loc_as_cell!(focus)
}
_ => {
unreachable!()
}
};
machine_st.pdl.push(target_cell);
machine_st.pdl.push(heap_loc_as_cell!(h));
} else {
let h_len = machine_st.heap.len();
machine_st.heap.push(pstr_offset_as_cell!(focus));
machine_st.heap.push(fixnum_as_cell!(
Fixnum::build_with(n as i64)
));
machine_st.pdl.push(pstr_loc_as_cell!(h_len));
machine_st.pdl.push(heap_loc_as_cell!(h));
}
if unify_sequence(machine_st, chars_iter.item.unwrap(), heap_loc_as_cell!(h)) {
return;
}
(HeapCellValueTag::PStrOffset, pstr_loc) => {
let n0 = cell_as_fixnum!(machine_st.heap[focus+1])
.get_num() as usize;
if pstr_loc < machine_st.heap.len() - 2 {
machine_st.heap.pop();
machine_st.heap.pop();
}
if n == n0 {
machine_st.pdl.push(pstr_loc_as_cell!(focus));
machine_st.pdl.push(heap_loc_as_cell!(h));
} else {
let h_len = machine_st.heap.len();
machine_st.heap.push(pstr_offset_as_cell!(pstr_loc));
machine_st.heap.push(fixnum_as_cell!(
Fixnum::build_with(n as i64)
));
machine_st.pdl.push(pstr_loc_as_cell!(h_len));
machine_st.pdl.push(heap_loc_as_cell!(h));
}
return;
}
_ => {
}
);
if focus < machine_st.heap.len() - 2 {
machine_st.heap.pop();
machine_st.heap.pop();
}
machine_st.pdl.push(machine_st.heap[focus]);
machine_st.pdl.push(heap_loc_as_cell!(h));
return;
}
}
break 'outer;
}

3
src/parser/ast.rs
View File

@@ -417,6 +417,9 @@ impl ParserError {
ParserError::IO(e) if e.kind() == ErrorKind::UnexpectedEof => {
atom!("unexpected_end_of_file")
}
ParserError::IO(e) if e.kind() == ErrorKind::InvalidData => {
atom!("invalid_data")
}
ParserError::IO(_) => atom!("input_output_error"),
ParserError::LexicalError(_) => atom!("lexical_error"),
ParserError::MissingQuote(..) => atom!("missing_quote"),

55
src/parser/char_reader.rs
View File

@@ -144,21 +144,7 @@ impl<R: Read> CharRead for CharReader<R> {
Err(e) => return Some(Err(e)),
}
loop {
let buf = &self.buf[self.pos..];
if !buf.is_empty() {
let e = match str::from_utf8(buf) {
Ok(s) => {
let mut chars = s.chars();
let c = chars.next().unwrap();
return Some(Ok(c));
}
Err(e) => e,
};
if buf.len() - e.valid_up_to() >= 4 {
let bad_bytes_error = |buf: &[u8]| {
// If we have 4 bytes that still don't make up
// a valid code point, then we have garbage.
@@ -184,13 +170,28 @@ impl<R: Read> CharRead for CharReader<R> {
// the buffer, it will be returned on the next
// loop.
return Some(Err(io::Error::new(
io::ErrorKind::InvalidData,
BadUtf8Error { bytes: badbytes },
)));
io::Error::new(io::ErrorKind::InvalidData, BadUtf8Error { bytes: badbytes })
};
loop {
let buf = &self.buf[self.pos..];
if !buf.is_empty() {
let e = match str::from_utf8(buf) {
Ok(s) => {
let mut chars = s.chars();
let c = chars.next().unwrap();
return Some(Ok(c));
}
Err(e) => e,
};
if buf.len() - e.valid_up_to() >= 4 {
return Some(Err(bad_bytes_error(buf)));
} else if self.pos >= self.buf.len() {
return None;
} else if self.buf.len() - self.pos >= 4 {
} else if self.buf.len() - self.pos >= 4 && self.pos < e.valid_up_to() {
return match str::from_utf8(&self.buf[self.pos..e.valid_up_to()]) {
Ok(s) => {
let mut chars = s.chars();
@@ -217,18 +218,22 @@ impl<R: Read> CharRead for CharReader<R> {
self.buf.truncate(buf_len - self.pos);
let buf_len = self.buf.len();
self.pos = 0;
if buf_len >= 4 {
continue;
}
let mut word = [0u8; 4];
let word_slice = &mut word[buf_len..4];
match self.inner.read(word_slice) {
Err(e) => return Some(Err(e)),
Ok(nread) if nread == 0 => return Some(Err(bad_bytes_error(&self.buf))),
Ok(nread) => {
self.buf.extend_from_slice(&word_slice[0..nread]);
}
}
self.pos = 0;
}
} else {
return None;
@@ -375,6 +380,7 @@ mod tests {
use std::io::Cursor;
#[test]
#[cfg_attr(miri, ignore = "slow and not very relevant")]
fn plain_string() {
let mut read_string = CharReader::new(Cursor::new("a string"));
@@ -387,6 +393,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "slow and not very relevant")]
fn greek_string() {
let mut read_string = CharReader::new(Cursor::new("λέξη"));
@@ -399,6 +406,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "slow and not very relevant")]
fn russian_string() {
let mut read_string = CharReader::new(Cursor::new("слово"));
@@ -411,6 +419,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "slow and not very relevant")]
fn greek_lorem_ipsum() {
let lorem_ipsum = "Λορεμ ιπσθμ δολορ σιτ αμετ, οφφενδιτ
εφφιcιενδι σιτ ει, ηαρθμ λεγερε qθαερενδθμ ιθσ νε. Ηασ νο εροσ
@@ -482,6 +491,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "slow and not very relevant")]
fn armenian_lorem_ipsum() {
let lorem_ipsum = "լոռեմ իպսում դոլոռ սիթ ամեթ, նովում գռաեծո
սեա եա, աբհոռռեանթ դիսպութանդո եի քուի. իդ քուոդ ինդոծթում
@@ -555,6 +565,7 @@ mod tests {
}
#[test]
#[cfg_attr(miri, ignore = "slow and not very relevant")]
fn russian_lorem_ipsum() {
let lorem_ipsum = "Лорем ипсум долор сит амет, атяуи дицам еи
сит, ид сеа фацилис елаборарет. Меа еу яуас алияуид, те яуи

13
src/parser/parser.rs
View File

@@ -97,7 +97,12 @@ pub(crate) fn as_partial_string(
string.push(*c);
}
_ => {
return Err(Term::Cons(Cell::default(), Box::new(head), orig_tail));
tail = Term::Cons(
Cell::default(),
Box::new((**prev).clone()),
Box::new((**succ).clone()),
);
break;
}
}
@@ -880,11 +885,7 @@ impl<'a, R: CharRead> Parser<'a, R> {
.push(Term::Literal(Cell::default(), Literal::Atom(atom)));
}
self.stack[idx].spec = if self.stack[idx].priority > 0 {
TERM
} else {
BTERM
};
self.stack[idx].spec = BTERM;
self.stack[idx].tt = TokenType::Term;
self.stack[idx].priority = 0;

4
src/raw_block.rs
View File

@@ -43,7 +43,7 @@ impl<T: RawBlockTraits> RawBlock<T> {
let layout = alloc::Layout::from_size_align_unchecked(cap, T::align());
self.base = alloc::alloc(layout) as *const _;
self.top = (self.base as usize + cap) as *const _;
self.top = self.base.add(cap);
*self.ptr.get_mut() = self.base as *mut _;
}
@@ -98,7 +98,7 @@ impl<T: RawBlockTraits> RawBlock<T> {
pub unsafe fn alloc(&self, size: usize) -> *mut u8 {
if self.free_space() >= size {
let ptr = *self.ptr.get();
*self.ptr.get() = (ptr as usize + size) as *mut _;
*self.ptr.get() = ptr.add(size) as *mut _;
ptr
} else {
ptr::null_mut()

6
src/read.rs
View File

@@ -130,7 +130,7 @@ impl ReadlineStream {
if let Some(mut path) = dirs_next::home_dir() {
path.push(HISTORY_FILE);
if path.exists() && rl.load_history(&path).is_err() {
println!("Warning: loading history failed");
println!("% Warning: loading history failed");
}
}
@@ -213,10 +213,10 @@ impl ReadlineStream {
path.push(HISTORY_FILE);
if path.exists() {
if self.rl.append_history(&path).is_err() {
println!("Warning: couldn't append history (existing file)");
println!("% Warning: couldn't append history (existing file)");
}
} else if self.rl.save_history(&path).is_err() {
println!("Warning: couldn't save history (new file)");
println!("% Warning: couldn't save history (new file)");
}
}
}

4
src/tests/dif.pl
View File

@@ -1,10 +1,10 @@
/**/
:- use_module(library(format)).
:- use_module(library(dcgs)).
:- use_module(library(format)).
:- use_module(library(lists)).
:- use_module(library(debug)).
:- use_module(library(atts)).
:- use_module(library(iso_ext)).
:- use_module(library(dif)).
% Tests from https://www.complang.tuwien.ac.at/ulrich/iso-prolog/dif

145
src/tests/when.pl Normal file
View File

@@ -0,0 +1,145 @@
/**/
:- use_module(library(iso_ext)).
:- use_module(library(format)).
:- use_module(library(dcgs)).
:- use_module(library(lists)).
:- use_module(library(debug)).
:- use_module(library(when)).
test("condition true before ground/1",(
A = 1,
when(ground(A), Run = true),
Run == true
)).
test("condition true before nonvar/1",(
A = a(_),
when(nonvar(A), Run = true),
Run == true
)).
test("condition true before ','/2",(
A = 1,
B = a(_),
when((ground(A), nonvar(B)), Run = true),
Run == true
)).
test("condition true before (;)/2",(
A = 1,
when((ground(A) ; nonvar(_)), Run1 = true),
Run1 == true,
B = a(_),
when((ground(_) ; nonvar(B)), Run2 = true),
Run2 == true
)).
test("condition true after ground/1",(
when(ground(A), Run = true),
var(Run),
A = 1,
Run == true
)).
test("condition true after nonvar/1",(
when(nonvar(A), Run = true),
var(Run),
A = a(_),
Run == true
)).
test("condition true after ','/2",(
when((ground(A), nonvar(B)), Run = true),
var(Run),
A = 1,
var(Run),
B = a(_),
Run == true
)).
test("condition true after (;)/2",(
when((ground(A) ; nonvar(_)), Run1 = true),
var(Run1),
A = 1,
Run1 == true,
when((ground(_) ; nonvar(B)), Run2 = true),
var(Run2),
B = a(_),
Run2 == true
)).
test("multiple when/2 on same variable",(
when(nonvar(A), Run1 = true),
when(ground(A), Run2 = true),
var(Run1), var(Run2),
A = a(B),
Run1 == true, var(Run2),
B = 1,
Run2 == true
)).
main :-
findall(test(Name, Goal), test(Name, Goal), Tests),
run_tests(Tests, Failed),
show_failed(Failed),
halt.
main_quiet :-
findall(test(Name, Goal), test(Name, Goal), Tests),
run_tests_quiet(Tests, Failed),
( Failed = [] ->
format("All tests passed", [])
; format("Some tests failed", [])
),
halt.
portray_failed_([]) --> [].
portray_failed_([F|Fs]) -->
"\"", F, "\"", "\n", portray_failed_(Fs).
portray_failed([]) --> [].
portray_failed([F|Fs]) -->
"\n", "Failed tests:", "\n", portray_failed_([F|Fs]).
show_failed(Failed) :-
phrase(portray_failed(Failed), F),
format("~s", [F]).
run_tests([], []).
run_tests([test(Name, Goal)|Tests], Failed) :-
format("Running test \"~s\"~n", [Name]),
( call(Goal) ->
Failed = Failed1
; format("Failed test \"~s\"~n", [Name]),
Failed = [Name|Failed1]
),
run_tests(Tests, Failed1).
run_tests_quiet([], []).
run_tests_quiet([test(Name, Goal)|Tests], Failed) :-
( call(Goal) ->
Failed = Failed1
; Failed = [Name|Failed1]
),
run_tests_quiet(Tests, Failed1).
assert_p(A, B) :-
phrase(portray_clause_(A), Portrayed),
phrase((B, ".\n"), Portrayed).
call_residual_goals(Goal, ResidualGoals) :-
call_residue_vars(Goal, Vars),
variables_residual_goals(Vars, ResidualGoals).
variables_residual_goals(Vars, Goals) :-
phrase(variables_residual_goals(Vars), Goals).
variables_residual_goals([]) --> [].
variables_residual_goals([Var|Vars]) -->
dif_:attribute_goals(Var),
variables_residual_goals(Vars).

39
src/toplevel.pl
View File

@@ -1,7 +1,5 @@
:- module('$toplevel', [argv/1,
copy_term/3]).
:- module('$toplevel', []).
:- use_module(library(atts), [call_residue_vars/2]).
:- use_module(library(charsio)).
:- use_module(library(error)).
:- use_module(library(files)).
@@ -9,11 +7,13 @@
:- use_module(library(lambda)).
:- use_module(library(lists)).
:- use_module(library(si)).
:- use_module(library(os)).
:- use_module(library('$project_atts')).
:- use_module(library('$atts')).
:- dynamic(disabled_init_file/0).
:- dynamic(started/0).
load_scryerrc :-
( '$home_directory'(HomeDir) ->
@@ -26,24 +26,18 @@ load_scryerrc :-
; true
).
:- dynamic(argv/1).
'$repl'([_|Args0]) :-
\+ argv(_),
( append(Args1, ["--"|Args2], Args0) ->
asserta('$toplevel':argv(Args2)),
'$repl' :-
asserta('$toplevel':started),
raw_argv(Args0),
( append(Args1, ["--"|_], Args0) ->
Args = Args1
; asserta('$toplevel':argv([])),
Args = Args0
; Args = Args0
),
delegate_task(Args, []),
(\+ disabled_init_file -> load_scryerrc ; true),
repl.
'$repl'(_) :-
( \+ argv(_) -> asserta('$toplevel':argv([]))
( Args = [_|TaskArgs] ->
delegate_task(TaskArgs, [])
; true
),
load_scryerrc,
(\+ disabled_init_file -> load_scryerrc ; true),
repl.
delegate_task([], []).
@@ -134,7 +128,7 @@ run_goals([g(Gs0)|Goals]) :- !,
write_term(Exception, [double_quotes(DQ)]), nl % halt?
)
) -> true
; write('Warning: initialization failed for: '),
; write('% Warning: initialization failed for: '),
write_term(Goal, [variable_names(VNs),double_quotes(DQ)]), nl
),
run_goals(Goals).
@@ -191,7 +185,7 @@ submit_query_and_print_results_(Term, VarList) :-
bb_put('$report_all', false),
bb_put('$report_n_more', 0),
expand_goal(Term, user, Term0),
atts:call_residue_vars(user:Term0, AttrVars),
call_residue_vars(user:Term0, AttrVars),
write_eqs_and_read_input(B, VarList, AttrVars),
!.
submit_query_and_print_results_(_, _) :-
@@ -314,7 +308,11 @@ write_eqs_and_read_input(B, VarList, AttrVars) :-
% one layer of depth added for (=/2) functor
'$term_variables_under_max_depth'(OrigVars, 22, Vars0),
'$project_atts':project_attributes(Vars0, AttrVars),
copy_term(AttrVars, AttrVars, AttrGoals),
% Need to copy all the visible Vars here so that they appear
% properly in AttrGoals, even the non-attributed. Need to also
% copy all the attributed variables here so that anonymous
% attributed variables also appear properly in AttrGoals.
copy_term([Vars0, AttrVars], [Vars0, AttrVars], AttrGoals),
term_variables(AttrGoals, AttrGoalVars),
append([Vars0, AttrGoalVars, AttrVars], Vars),
charsio:extend_var_list(Vars, VarList, NewVarList, fabricated),
@@ -452,4 +450,3 @@ print_exception_with_check(E) :-
% is expected to be printed instead.
; print_exception(E)
).

12
tests-pl/iso-conformity-tests.pl
View File

@@ -1005,6 +1005,18 @@ test_311 :- test_syntax_error("Finis ().", syntax_error(incomplete_reduction)).
test_318 :- writeq_term_to_chars(+((1*2)^3), C),
C == "+ (1*2)^3".
test_320 :- writeq_term_to_chars([a|\+2], C),
C == "[a|\\+2]".
test_321 :- test_syntax_error("writeq((a)(b)).", syntax_error(incomplete_reduction)).
test_324 :- writeq_term_to_chars('%', C),
C == "'%'".
test_325 :- test_syntax_error("writeq({[y}]).", syntax_error(incomplete_reduction)).
test_326 :- test_syntax_error("(>)(1,2).", syntax_error(incomplete_reduction)).
run_tests([Test|Tests]) -->
( { call(Test) } ->
[]

0
tests/scryer/cli/issues/display_constraints.stderr Normal file
View File

5
tests/scryer/cli/issues/display_constraints.stdin Normal file
View File

@@ -0,0 +1,5 @@
X = 1.
use_module(library(dif)).
X = 1.
dif(X,1).
halt.

4
tests/scryer/cli/issues/display_constraints.stdout Normal file
View File

@@ -0,0 +1,4 @@
X = 1.
true.
X = 1.
dif:dif(X,1).

2
tests/scryer/cli/issues/display_constraints.toml Normal file
View File

@@ -0,0 +1,2 @@
# issue 857
args = ["-f", "--no-add-history"]

0
tests-pl/issue852-throw_e.pl → tests/scryer/cli/issues/do_not_duplicate_path_components.in/throw_e.pl
View File

0
tests/scryer/cli/issues/do_not_duplicate_path_components.stderr Normal file
View File

3
tests/scryer/cli/issues/do_not_duplicate_path_components.stdin Normal file
View File

@@ -0,0 +1,3 @@
['throw_e.pl'].
['throw_e.pl'].
halt.

2
tests/scryer/cli/issues/do_not_duplicate_path_components.stdout Normal file
View File

@@ -0,0 +1,2 @@
throw(e).
throw(e).

2
tests/scryer/cli/issues/do_not_duplicate_path_components.toml Normal file
View File

@@ -0,0 +1,2 @@
# issue 852
args = ["-f", "--no-add-history"]

0
tests-pl/issue820-goals.pl → tests/scryer/cli/issues/goals_compound_goal.in/goals.pl
View File

0
tests/scryer/cli/issues/goals_compound_goal.stderr Normal file
View File

1
tests/scryer/cli/issues/goals_compound_goal.stdout Normal file
View File

@@ -0,0 +1 @@
helloworld

2
tests/scryer/cli/issues/goals_compound_goal.toml Normal file
View File

@@ -0,0 +1,2 @@
# issue 820
args = ["-f", "--no-add-history", "-g", "test,halt", "goals.pl"]

3
tests/scryer/cli/issues/goals_multiple_goals.in/goals.pl Normal file
View File

@@ -0,0 +1,3 @@
test :- write(world), nl.
:- initialization(write(hello)).

0
tests/scryer/cli/issues/goals_multiple_goals.stderr Normal file
View File

1
tests/scryer/cli/issues/goals_multiple_goals.stdout Normal file
View File

@@ -0,0 +1 @@
helloworld

2
tests/scryer/cli/issues/goals_multiple_goals.toml Normal file
View File

@@ -0,0 +1,2 @@
# issue 820
args = ["-f", "--no-add-history", "-g", "test", "-g", "halt", "goals.pl"]

0
tests/scryer/cli/issues/handle_residual_goal.stderr Normal file
View File

11
tests/scryer/cli/issues/handle_residual_goal.stdin Normal file
View File

@@ -0,0 +1,11 @@
use_module(library(dif)).
use_module(library(iso_ext)).
-X\=X.
-X=X.
dif(-X,X).
dif(-X,X), -X=X.
call_residue_vars(dif(-X,X), Vars).
set_prolog_flag(occurs_check, true).
-X\=X.
dif(-X,X).
halt.

10
tests/scryer/cli/issues/handle_residual_goal.stdout Normal file
View File

@@ -0,0 +1,10 @@
true.
true.
false.
X = -X.
dif:dif(-X,X).
false.
Vars = [X], dif:dif(-X,X).
true.
true.
true.

2
tests/scryer/cli/issues/handle_residual_goal.toml Normal file
View File

@@ -0,0 +1,2 @@
# issue 844
args = ["-f", "--no-add-history"]

0
tests/scryer/cli/issues/ignored_constraint.stderr Normal file
View File

2
tests/scryer/cli/issues/ignored_constraint.stdin Normal file
View File

@@ -0,0 +1,2 @@
use_module(library(freeze)), freeze(X,false), X \=a.
halt.

1
tests/scryer/cli/issues/ignored_constraint.stdout Normal file
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@@ -0,0 +1 @@
freeze:freeze(X,false).

2
tests/scryer/cli/issues/ignored_constraint.toml Normal file
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@@ -0,0 +1,2 @@
# issue 807
args = ["-f", "--no-add-history"]

0
tests/scryer/cli/issues/no_stutter.stderr Normal file
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2
tests/scryer/cli/issues/no_stutter.stdin Normal file
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@@ -0,0 +1,2 @@
write(a), write(b), false.
halt.

1
tests/scryer/cli/issues/no_stutter.stdout Normal file
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@@ -0,0 +1 @@
ab false.

2
tests/scryer/cli/issues/no_stutter.toml Normal file
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@@ -0,0 +1,2 @@
# issue 815
args = ["-f", "--no-add-history"]

0
tests-pl/issue841-occurs-check.pl → tests/scryer/cli/issues/occurs_check_flag.in/occurs_check_example.pl
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0
tests/scryer/cli/issues/occurs_check_flag.stderr Normal file
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2
tests/scryer/cli/issues/occurs_check_flag.stdin Normal file
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@@ -0,0 +1,2 @@
f(X, X).
halt.

1
tests/scryer/cli/issues/occurs_check_flag.stdout Normal file
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@@ -0,0 +1 @@
false.

2
tests/scryer/cli/issues/occurs_check_flag.toml Normal file
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@@ -0,0 +1,2 @@
# issue 841
args = ["-f", "--no-add-history", "occurs_check_example.pl"]

0
tests/scryer/cli/issues/occurs_check_flag2.stderr Normal file
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6
tests/scryer/cli/issues/occurs_check_flag2.stdin Normal file
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@@ -0,0 +1,6 @@
set_prolog_flag(occurs_check, true).
X = -X.
asserta(f(X,g(X))).
f(X,X).
X-X = X-g(X).
halt.

5
tests/scryer/cli/issues/occurs_check_flag2.stdout Normal file
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@@ -0,0 +1,5 @@
true.
false.
true.
false.
false.

2
tests/scryer/cli/issues/occurs_check_flag2.toml Normal file
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@@ -0,0 +1,2 @@
# issue 841
args = ["-f", "--no-add-history"]

0
tests-pl/issue839-op3.pl → tests/scryer/cli/issues/op3.in/op3.pl
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0
tests/scryer/cli/issues/op3.stderr Normal file
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0
tests/scryer/cli/issues/op3.stdout Normal file
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2
tests/scryer/cli/issues/op3.toml Normal file
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@@ -0,0 +1,2 @@
# issue 839
args = ["-f", "--no-add-history", "op3.pl", "-g", "halt"]

0
tests/scryer/cli/issues/os_argv-no-final--.stderr Normal file
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6
tests/scryer/cli/issues/os_argv-no-final--.stdin Normal file
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@@ -0,0 +1,6 @@
os:argv(V).
os:argv(["test1"|_]).
os:argv(["--"|_]).
os:argv([V, "--"|_]).
os:argv(["test2"|_]).
os:argv([]).

6
tests/scryer/cli/issues/os_argv-no-final--.stdout Normal file
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@@ -0,0 +1,6 @@
V = ["test1","--","test2"].
true.
false.
V = "test1".
false.
false.

2
tests/scryer/cli/issues/os_argv-no-final--.toml Normal file
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@@ -0,0 +1,2 @@
# https://github.com/mthom/scryer-prolog/pull/2263#issuecomment-1874400820
args = ["-f", "--no-add-history", "--", "test1", "--", "test2"]

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