/
flatten.cpp
6441 lines (6187 loc) · 244 KB
/
flatten.cpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Guido Tack <guido.tack@monash.edu>
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <minizinc/flatten.hh>
#include <minizinc/eval_par.hh>
#include <minizinc/copy.hh>
#include <minizinc/hash.hh>
#include <minizinc/astexception.hh>
#include <minizinc/optimize.hh>
#include <minizinc/astiterator.hh>
#include <minizinc/output.hh>
#include <minizinc/stl_map_set.hh>
#include <minizinc/flatten_internal.hh>
namespace MiniZinc {
/// Output operator for contexts
template<class Char, class Traits>
std::basic_ostream<Char,Traits>&
operator <<(std::basic_ostream<Char,Traits>& os, Ctx& ctx) {
switch (ctx.b) {
case C_ROOT: os << "R"; break;
case C_POS: os << "+"; break;
case C_NEG: os << "-"; break;
case C_MIX: os << "M"; break;
default: assert(false); break;
}
switch (ctx.i) {
case C_ROOT: os << "R"; break;
case C_POS: os << "+"; break;
case C_NEG: os << "-"; break;
case C_MIX: os << "M"; break;
default: assert(false); break;
}
if (ctx.neg) os << "!";
return os;
}
BCtx operator +(const BCtx& c) {
switch (c) {
case C_ROOT: return C_POS;
case C_POS: return C_POS;
case C_NEG: return C_NEG;
case C_MIX: return C_MIX;
default: assert(false); return C_ROOT;
}
}
BCtx operator -(const BCtx& c) {
switch (c) {
case C_ROOT: return C_NEG;
case C_POS: return C_NEG;
case C_NEG: return C_POS;
case C_MIX: return C_MIX;
default: assert(false); return C_ROOT;
}
}
/// Check if \a c is non-positive
bool nonpos(const BCtx& c) {
return c==C_NEG || c==C_MIX;
}
/// Check if \a c is non-negative
bool nonneg(const BCtx& c) {
return c==C_ROOT || c==C_POS;
}
void dumpEEb(const std::vector<EE>& ee) {
for (unsigned int i=0; i<ee.size(); i++)
std::cerr << *ee[i].b() << "\n";
}
void dumpEEr(const std::vector<EE>& ee) {
for (unsigned int i=0; i<ee.size(); i++)
std::cerr << *ee[i].r() << "\n";
}
std::vector<Expression*> toExpVec(std::vector<KeepAlive>& v) {
std::vector<Expression*> r(v.size());
for (unsigned int i=v.size(); i--;)
r[i] = v[i]();
return r;
}
void addCtxAnn(VarDecl* vd, BCtx& c) {
if (vd) {
Id* ctx_id = NULL;
switch (c) {
case C_ROOT: ctx_id=constants().ctx.root; break;
case C_POS: ctx_id=constants().ctx.pos; break;
case C_NEG: ctx_id=constants().ctx.neg; break;
case C_MIX: ctx_id=constants().ctx.mix; break;
default: assert(false);;
}
vd->addAnnotation(ctx_id);
}
}
Expression* definesVarAnn(Id* id) {
std::vector<Expression*> args(1);
args[0] = id;
Call* c = new Call(Location().introduce(),constants().ann.defines_var,args);
c->type(Type::ann());
return c;
}
bool isDefinesVarAnn(Expression* e) {
return e->isa<Call>() && e->cast<Call>()->id()==constants().ann.defines_var;
}
/// Check if \a e is NULL or true
bool istrue(EnvI& env, Expression* e) {
GCLock lock;
return e==NULL || (e->type().ispar() && e->type().isbool()
&& eval_bool(env,e));
}
/// Check if \a e is non-NULL and false
bool isfalse(EnvI& env, Expression* e) {
GCLock lock;
return e!=NULL && e->type().ispar() && e->type().isbool()
&& !eval_bool(env,e);
}
EE flat_exp(EnvI& env, Ctx ctx, Expression* e, VarDecl* r, VarDecl* b);
KeepAlive bind(EnvI& env, Ctx ctx, VarDecl* vd, Expression* e);
VarDecl* newVarDecl(EnvI& env, Ctx ctx, TypeInst* ti, Id* id, VarDecl* origVd, Expression* rhs) {
VarDecl* vd;
if (id == NULL)
vd = new VarDecl(rhs ? rhs->loc().introduce() : Location().introduce(), ti, env.genId());
else
vd = new VarDecl(rhs ? rhs->loc().introduce() : Location().introduce(), ti, id);
if (vd->e()) {
bind(env, ctx, vd, rhs);
} else {
vd->e(rhs);
}
assert(!vd->type().isbot());
if (origVd && (origVd->id()->idn()!=-1 || origVd->toplevel())) {
vd->introduced(origVd->introduced());
} else {
vd->introduced(true);
}
vd->flat(vd);
if (origVd) {
for (ExpressionSetIter it = origVd->ann().begin(); it != origVd->ann().end(); ++it) {
EE ee_ann = flat_exp(env, Ctx(), *it, NULL, constants().var_true);
vd->addAnnotation(ee_ann.r());
}
}
VarDeclI* ni = new VarDeclI(Location().introduce(),vd);
env.flat_addItem(ni);
EE ee(vd,NULL);
env.map_insert(vd->id(),ee);
return vd;
}
#define MZN_FILL_REIFY_MAP(T,ID) reifyMap.insert(std::pair<ASTString,ASTString>(constants().ids.T.ID,constants().ids.T ## reif.ID));
EnvI::EnvI(Model* orig0) : orig(orig0), output(new Model), ignorePartial(false), maxCallStack(0), collect_vardecls(false), in_redundant_constraint(0), in_maybe_partial(0), _flat(new Model), _failed(false), ids(0) {
MZN_FILL_REIFY_MAP(int_,lin_eq);
MZN_FILL_REIFY_MAP(int_,lin_le);
MZN_FILL_REIFY_MAP(int_,lin_ne);
MZN_FILL_REIFY_MAP(int_,plus);
MZN_FILL_REIFY_MAP(int_,minus);
MZN_FILL_REIFY_MAP(int_,times);
MZN_FILL_REIFY_MAP(int_,div);
MZN_FILL_REIFY_MAP(int_,mod);
MZN_FILL_REIFY_MAP(int_,lt);
MZN_FILL_REIFY_MAP(int_,le);
MZN_FILL_REIFY_MAP(int_,gt);
MZN_FILL_REIFY_MAP(int_,ge);
MZN_FILL_REIFY_MAP(int_,eq);
MZN_FILL_REIFY_MAP(int_,ne);
MZN_FILL_REIFY_MAP(float_,lin_eq);
MZN_FILL_REIFY_MAP(float_,lin_le);
MZN_FILL_REIFY_MAP(float_,lin_lt);
MZN_FILL_REIFY_MAP(float_,lin_ne);
MZN_FILL_REIFY_MAP(float_,plus);
MZN_FILL_REIFY_MAP(float_,minus);
MZN_FILL_REIFY_MAP(float_,times);
MZN_FILL_REIFY_MAP(float_,div);
MZN_FILL_REIFY_MAP(float_,mod);
MZN_FILL_REIFY_MAP(float_,lt);
MZN_FILL_REIFY_MAP(float_,le);
MZN_FILL_REIFY_MAP(float_,gt);
MZN_FILL_REIFY_MAP(float_,ge);
MZN_FILL_REIFY_MAP(float_,eq);
MZN_FILL_REIFY_MAP(float_,ne);
reifyMap.insert(std::pair<ASTString,ASTString>(constants().ids.forall,constants().ids.forall_reif));
reifyMap.insert(std::pair<ASTString,ASTString>(constants().ids.bool_eq,constants().ids.bool_eq_reif));
reifyMap.insert(std::pair<ASTString,ASTString>(constants().ids.bool_clause,constants().ids.bool_clause_reif));
reifyMap.insert(std::pair<ASTString,ASTString>(constants().ids.clause,constants().ids.bool_clause_reif));
}
EnvI::~EnvI(void) {
delete _flat;
delete output;
}
long long int
EnvI::genId(void) {
return ids++;
}
void EnvI::map_insert(Expression* e, const EE& ee) {
KeepAlive ka(e);
map.insert(ka,WW(ee.r(),ee.b()));
}
EnvI::Map::iterator EnvI::map_find(Expression* e) {
KeepAlive ka(e);
Map::iterator it = map.find(ka);
if (it != map.end()) {
if (it->second.r()) {
if (it->second.r()->isa<VarDecl>()) {
int idx = vo.find(it->second.r()->cast<VarDecl>());
if (idx == -1 || (*_flat)[idx]->removed())
return map.end();
}
} else {
return map.end();
}
}
return it;
}
void EnvI::map_remove(Expression* e) {
KeepAlive ka(e);
map.remove(ka);
}
EnvI::Map::iterator EnvI::map_end(void) {
return map.end();
}
void EnvI::dump(void) {
struct EED {
static std::string d(const WW& ee) {
std::ostringstream oss;
oss << ee.r() << " " << ee.b();
return oss.str();
}
};
map.dump<EED>();
}
void EnvI::flat_addItem(Item* i) {
assert(_flat);
if (_failed)
return;
_flat->addItem(i);
Expression* toAnnotate = NULL;
Expression* toAdd = NULL;
switch (i->iid()) {
case Item::II_VD:
{
VarDeclI* vd = i->cast<VarDeclI>();
toAnnotate = vd->e()->e();
vo.add(vd, _flat->size()-1);
toAdd = vd->e();
break;
}
case Item::II_CON:
{
ConstraintI* ci = i->cast<ConstraintI>();
if (ci->e()->isa<BoolLit>() && !ci->e()->cast<BoolLit>()->v()) {
fail();
} else {
toAnnotate = ci->e();
toAdd = ci->e();
}
break;
}
case Item::II_SOL:
{
SolveI* si = i->cast<SolveI>();
CollectOccurrencesE ce(vo,si);
topDown(ce,si->e());
for (ExpressionSetIter it = si->ann().begin(); it != si->ann().end(); ++it)
topDown(ce,*it);
break;
}
case Item::II_OUT:
{
OutputI* si = i->cast<OutputI>();
toAdd = si->e();
break;
}
default:
break;
}
if (toAnnotate && toAnnotate->isa<Call>()) {
int prev = idStack.size() > 0 ? idStack.back() : 0;
bool allCalls = true;
for (int i = callStack.size()-1; i >= prev; i--) {
Expression* ee = callStack[i]->untag();
allCalls = allCalls && (i==callStack.size()-1 || ee->isa<Call>());
for (ExpressionSetIter it = ee->ann().begin(); it != ee->ann().end(); ++it) {
EE ee_ann = flat_exp(*this, Ctx(), *it, NULL, constants().var_true);
if (allCalls || !isDefinesVarAnn(ee_ann.r()))
toAnnotate->addAnnotation(ee_ann.r());
}
}
}
if (toAdd) {
CollectOccurrencesE ce(vo,i);
topDown(ce,toAdd);
}
}
void EnvI::flat_removeItem(MiniZinc::Item* i) {
i->remove();
}
void EnvI::flat_removeItem(int i) {
(*_flat)[i]->remove();
}
void EnvI::fail(void) {
if (!_failed) {
addWarning("model inconsistency detected");
_failed = true;
for (unsigned int i=0; i<_flat->size(); i++) {
(*_flat)[i]->remove();
}
ConstraintI* failedConstraint = new ConstraintI(Location().introduce(),constants().lit_false);
_flat->addItem(failedConstraint);
_flat->addItem(SolveI::sat(Location().introduce()));
for (unsigned int i=0; i<output->size(); i++) {
(*output)[i]->remove();
}
output->addItem(new OutputI(Location().introduce(),new ArrayLit(Location(),std::vector<Expression*>())));
throw ModelInconsistent(*this, Location().introduce());
}
}
bool EnvI::failed() const {
return _failed;
}
unsigned int EnvI::registerEnum(VarDeclI* vdi) {
EnumMap::iterator it = enumMap.find(vdi);
unsigned int ret;
if (it == enumMap.end()) {
ret = enumVarDecls.size();
enumVarDecls.push_back(vdi);
enumMap.insert(std::make_pair(vdi, ret));
} else {
ret = it->second;
}
return ret+1;
}
VarDeclI* EnvI::getEnum(unsigned int i) const {
assert(i > 0 && i <= enumVarDecls.size());
return enumVarDecls[i-1];
}
unsigned int EnvI::registerArrayEnum(const std::vector<unsigned int>& arrayEnum) {
std::ostringstream oss;
for (unsigned int i=0; i<arrayEnum.size(); i++) {
assert(arrayEnum[i] <= enumVarDecls.size());
oss << arrayEnum[i] << ".";
}
ArrayEnumMap::iterator it = arrayEnumMap.find(oss.str());
unsigned int ret;
if (it == arrayEnumMap.end()) {
ret = arrayEnumDecls.size();
arrayEnumDecls.push_back(arrayEnum);
arrayEnumMap.insert(std::make_pair(oss.str(), ret));
} else {
ret = it->second;
}
return ret+1;
}
const std::vector<unsigned int>& EnvI::getArrayEnum(unsigned int i) const {
assert(i > 0 && i <= arrayEnumDecls.size());
return arrayEnumDecls[i-1];
}
bool EnvI::isSubtype(const Type& t1, const Type& t2, bool strictEnums) {
if (!t1.isSubtypeOf(t2,strictEnums))
return false;
if (strictEnums && t1.dim()==0 && t2.dim()!=0 && t2.enumId() != 0) {
// set assigned to an array
const std::vector<unsigned int>& t2enumIds = getArrayEnum(t2.enumId());
if (t2enumIds[t2enumIds.size()-1] != 0 && t1.enumId() != t2enumIds[t2enumIds.size()-1])
return false;
}
if (strictEnums && t1.dim() > 0 && t1.enumId() != t2.enumId()) {
if (t1.enumId()==0) {
return t1.isbot();
}
if (t2.enumId()!=0) {
const std::vector<unsigned int>& t1enumIds = getArrayEnum(t1.enumId());
const std::vector<unsigned int>& t2enumIds = getArrayEnum(t2.enumId());
assert(t1enumIds.size() == t2enumIds.size());
for (unsigned int i=0; i<t1enumIds.size()-1; i++) {
if (t2enumIds[i] != 0 && t1enumIds[i] != t2enumIds[i])
return false;
}
if (!t1.isbot() && t2enumIds[t1enumIds.size()-1]!=0 && t1enumIds[t1enumIds.size()-1]!=t2enumIds[t2enumIds.size()-1])
return false;
}
}
return true;
}
void EnvI::collectVarDecls(bool b) {
collect_vardecls = b;
}
void EnvI::vo_add_exp(VarDecl* vd) {
if (vd->e() && vd->e()->isa<Call>()) {
int prev = idStack.size() > 0 ? idStack.back() : 0;
for (int i = callStack.size()-1; i >= prev; i--) {
Expression* ee = callStack[i]->untag();
for (ExpressionSetIter it = ee->ann().begin(); it != ee->ann().end(); ++it) {
EE ee_ann = flat_exp(*this, Ctx(), *it, NULL, constants().var_true);
vd->e()->addAnnotation(ee_ann.r());
}
}
}
int idx = vo.find(vd);
CollectOccurrencesE ce(vo,(*_flat)[idx]);
topDown(ce, vd->e());
if (collect_vardecls)
modifiedVarDecls.push_back(idx);
}
Model* EnvI::flat(void) {
return _flat;
}
void EnvI::swap() {
Model* tmp = orig;
orig = _flat;
_flat = tmp;
}
ASTString EnvI::reifyId(const ASTString& id) {
ASTStringMap<ASTString>::t::iterator it = reifyMap.find(id);
if (it == reifyMap.end()) {
return id.str()+"_reif";
} else {
return it->second;
}
}
#undef MZN_FILL_REIFY_MAP
void EnvI::addWarning(const std::string& msg) {
if (warnings.size()>20)
return;
if (warnings.size()==20) {
warnings.push_back("Further warnings have been suppressed.\n");
} else {
std::ostringstream oss;
createErrorStack();
dumpStack(oss, true);
warnings.push_back(msg+"\n"+oss.str());
}
}
void EnvI::createErrorStack(void) {
errorStack.clear();
for (unsigned int i=callStack.size(); i--;) {
Expression* e = callStack[i]->untag();
bool isCompIter = callStack[i]->isTagged();
KeepAlive ka(e);
errorStack.push_back(std::make_pair(ka,isCompIter));
}
}
CallStackItem::CallStackItem(EnvI& env0, Expression* e) : env(env0) {
if (e->isa<VarDecl>())
env.idStack.push_back(env.callStack.size());
if (e->isa<Call>() && e->cast<Call>()->id()=="redundant_constraint")
env.in_redundant_constraint++;
if (e->ann().contains(constants().ann.maybe_partial))
env.in_maybe_partial++;
env.callStack.push_back(e);
env.maxCallStack = std::max(env.maxCallStack, static_cast<unsigned int>(env.callStack.size()));
}
CallStackItem::CallStackItem(EnvI& env0, Id* ident, IntVal i) : env(env0) {
Expression* ee = ident->tag();
env.callStack.push_back(ee);
env.maxCallStack = std::max(env.maxCallStack, static_cast<unsigned int>(env.callStack.size()));
}
CallStackItem::~CallStackItem(void) {
Expression* e = env.callStack.back()->untag();
if (e->isa<VarDecl>())
env.idStack.pop_back();
if (e->isa<Call>() && e->cast<Call>()->id()=="redundant_constraint")
env.in_redundant_constraint--;
if (e->ann().contains(constants().ann.maybe_partial))
env.in_maybe_partial--;
env.callStack.pop_back();
}
class CallArgItem {
public:
EnvI& env;
CallArgItem(EnvI& env0) : env(env0) {
env.idStack.push_back(env.callStack.size());
}
~CallArgItem(void) {
env.idStack.pop_back();
}
};
FlatteningError::FlatteningError(EnvI& env, const Location& loc, const std::string& msg)
: LocationException(env,loc,msg) {}
Env::Env(void) : e(new EnvI(NULL)) {}
Env::Env(Model* m) : e(new EnvI(m)) {}
Env::~Env(void) {
delete e;
}
Model*
Env::model(void) { return e->orig; }
void
Env::model(Model* m) { e->orig = m; }
Model*
Env::flat(void) { return e->flat(); }
void
Env::swap() { e->swap(); }
Model*
Env::output(void) { return e->output; }
std::ostream&
Env::evalOutput(std::ostream& os) { return e->evalOutput(os); }
EnvI&
Env::envi(void) { return *e; }
const EnvI&
Env::envi(void) const { return *e; }
std::ostream&
Env::dumpErrorStack(std::ostream& os) {
return e->dumpStack(os, true);
}
std::ostream&
EnvI::dumpStack(std::ostream& os, bool errStack) {
int lastError = 0;
std::vector<Expression*> errStackCopy;
if (errStack) {
errStackCopy.resize(errorStack.size());
for (unsigned int i=0; i<errorStack.size(); i++) {
Expression* e = errorStack[i].first();
if (errorStack[i].second) {
e = e->tag();
}
errStackCopy[i] = e;
}
}
std::vector<Expression*>& stack = errStack ? errStackCopy : callStack;
for (; lastError < stack.size(); lastError++) {
Expression* e = stack[lastError]->untag();
bool isCompIter = stack[lastError]->isTagged();
if (e->loc().is_introduced)
continue;
if (!isCompIter && e->isa<Id>()) {
break;
}
}
ASTString curloc_f;
int curloc_l = -1;
for (int i=lastError-1; i>=0; i--) {
Expression* e = stack[i]->untag();
bool isCompIter = stack[i]->isTagged();
ASTString newloc_f = e->loc().filename;
if (e->loc().is_introduced)
continue;
int newloc_l = e->loc().first_line;
if (newloc_f != curloc_f || newloc_l != curloc_l) {
os << " " << newloc_f << ":" << newloc_l << ":" << std::endl;
curloc_f = newloc_f;
curloc_l = newloc_l;
}
if (isCompIter)
os << " with ";
else
os << " in ";
switch (e->eid()) {
case Expression::E_INTLIT:
os << "integer literal" << std::endl;
break;
case Expression::E_FLOATLIT:
os << "float literal" << std::endl;
break;
case Expression::E_SETLIT:
os << "set literal" << std::endl;
break;
case Expression::E_BOOLLIT:
os << "bool literal" << std::endl;
break;
case Expression::E_STRINGLIT:
os << "string literal" << std::endl;
break;
case Expression::E_ID:
if (isCompIter) {
if (e->cast<Id>()->decl()->e()->type().ispar())
os << *e << " = " << *e->cast<Id>()->decl()->e() << std::endl;
else
os << *e << " = <expression>" << std::endl;
} else {
os << "identifier" << *e << std::endl;
}
break;
case Expression::E_ANON:
os << "anonymous variable" << std::endl;
break;
case Expression::E_ARRAYLIT:
os << "array literal" << std::endl;
break;
case Expression::E_ARRAYACCESS:
os << "array access" << std::endl;
break;
case Expression::E_COMP:
{
const Comprehension* cmp = e->cast<Comprehension>();
if (cmp->set())
os << "set ";
else
os << "array ";
os << "comprehension expression" << std::endl;
}
break;
case Expression::E_ITE:
os << "if-then-else expression" << std::endl;
break;
case Expression::E_BINOP:
os << "binary " << e->cast<BinOp>()->opToString() << " operator expression" << std::endl;
break;
case Expression::E_UNOP:
os << "unary " << e->cast<UnOp>()->opToString() << " operator expression" << std::endl;
break;
case Expression::E_CALL:
os << "call '" << e->cast<Call>()->id() << "'" << std::endl;
break;
case Expression::E_VARDECL:
{
GCLock lock;
os << "variable declaration for '" << e->cast<VarDecl>()->id()->str() << "'" << std::endl;
}
break;
case Expression::E_LET:
os << "let expression" << std::endl;
break;
case Expression::E_TI:
os << "type-inst expression" << std::endl;
break;
case Expression::E_TIID:
os << "type identifier" << std::endl;
break;
default:
assert(false);
os << "unknown expression (internal error)" << std::endl;
break;
}
}
return os;
}
void populateOutput(Env& env) {
EnvI& envi = env.envi();
Model* _flat = envi.flat();
Model* _output = envi.output;
std::vector<Expression*> outputVars;
for (VarDeclIterator it = _flat->begin_vardecls();
it != _flat->end_vardecls(); ++it) {
VarDecl* vd = it->e();
Annotation& ann = vd->ann();
ArrayLit* dims = NULL;
bool has_output_ann = false;
if(!ann.isEmpty()) {
for(ExpressionSetIter ait = ann.begin();
ait != ann.end(); ++ait) {
if (Call* c = (*ait)->dyn_cast<Call>()) {
if (c->id() == constants().ann.output_array) {
dims = c->args()[0]->cast<ArrayLit>();
has_output_ann = true;
break;
}
} else if ((*ait)->isa<Id>() && (*ait)->cast<Id>()->str() == constants().ann.output_var->str()) {
has_output_ann = true;
}
}
if(has_output_ann) {
std::ostringstream s;
s << vd->id()->str().str() << " = ";
_output->addItem(new VarDeclI(Location().introduce(), vd));
if (dims) {
s << "array" << dims->v().size() << "d(";
for (unsigned int i=0; i<dims->v().size(); i++) {
IntSetVal* idxset = eval_intset(envi,dims->v()[i]);
s << *idxset << ",";
}
}
StringLit* sl = new StringLit(Location().introduce(),s.str());
outputVars.push_back(sl);
std::vector<Expression*> showArgs(1);
showArgs[0] = vd->id();
Call* show = new Call(Location().introduce(),constants().ids.show,showArgs);
show->type(Type::parstring());
FunctionI* fi = _flat->matchFn(envi, show, false);
assert(fi);
show->decl(fi);
outputVars.push_back(show);
std::string ends = dims ? ")" : "";
ends += ";\n";
StringLit* eol = new StringLit(Location().introduce(),ends);
outputVars.push_back(eol);
}
}
}
OutputI* newOutputItem = new OutputI(Location().introduce(),new ArrayLit(Location().introduce(),outputVars));
_output->addItem(newOutputItem);
envi.flat()->mergeStdLib(envi, _output);
}
std::ostream&
EnvI::evalOutput(std::ostream &os) {
GCLock lock;
ArrayLit* al = eval_array_lit(*this,output->outputItem()->e());
bool fLastEOL = true;
for (int i=0; i<al->v().size(); i++) {
std::string s = eval_string(*this, al->v()[i]);
if (!s.empty()) {
os << s;
fLastEOL = ( '\n'==s.back() );
}
}
if ( !fLastEOL )
os << '\n';
return os;
}
const std::vector<std::string>& Env::warnings(void) {
return envi().warnings;
}
void Env::clearWarnings(void) {
envi().warnings.clear();
}
unsigned int Env::maxCallStack(void) const {
return envi().maxCallStack;
}
bool isTotal(FunctionI* fi) {
return fi->ann().contains(constants().ann.promise_total);
}
bool isReverseMap(BinOp* e) {
return e->ann().contains(constants().ann.is_reverse_map);
}
void checkIndexSets(EnvI& env, VarDecl* vd, Expression* e) {
ASTExprVec<TypeInst> tis = vd->ti()->ranges();
std::vector<TypeInst*> newtis(tis.size());
bool needNewTypeInst = false;
GCLock lock;
switch (e->eid()) {
case Expression::E_ID:
{
Id* id = e->cast<Id>();
ASTExprVec<TypeInst> e_tis = id->decl()->ti()->ranges();
assert(tis.size()==e_tis.size());
for (unsigned int i=0; i<tis.size(); i++) {
if (tis[i]->domain()==NULL) {
newtis[i] = e_tis[i];
needNewTypeInst = true;
} else {
if (!eval_intset(env,tis[i]->domain())->equal(eval_intset(env,e_tis[i]->domain())))
throw EvalError(env, vd->loc(), "Index set mismatch");
newtis[i] = tis[i];
}
}
}
break;
case Expression::E_ARRAYLIT:
{
ArrayLit* al = e->cast<ArrayLit>();
for (unsigned int i=0; i<tis.size(); i++) {
if (tis[i]->domain()==NULL) {
newtis[i] = new TypeInst(Location().introduce(),Type(),new SetLit(Location().introduce(),IntSetVal::a(al->min(i),al->max(i))));
needNewTypeInst = true;
} else {
IntSetVal* isv = eval_intset(env,tis[i]->domain());
assert(isv->size()<=1);
if ( (isv->size()==0 && al->min(i) <= al->max(i)) ||
(isv->size()!=0 && (isv->min(0) != al->min(i) || isv->max(0) != al->max(i))) )
throw EvalError(env, vd->loc(), "Index set mismatch");
newtis[i] = tis[i];
}
}
}
break;
default:
throw InternalError("not supported yet");
}
if (needNewTypeInst) {
TypeInst* tic = copy(env,vd->ti())->cast<TypeInst>();
tic->setRanges(newtis);
vd->ti(tic);
}
}
/// Turn \a c into domain constraints if possible.
/// Return whether \a c is still required in the model.
bool checkDomainConstraints(EnvI& env, Call* c) {
if (c->id()==constants().ids.int_.le) {
Expression* e0 = c->args()[0];
Expression* e1 = c->args()[1];
if (e0->type().ispar() && e1->isa<Id>()) {
// greater than
Id* id = e1->cast<Id>();
IntVal lb = eval_int(env,e0);
if (id->decl()->ti()->domain()) {
IntSetVal* domain = eval_intset(env,id->decl()->ti()->domain());
if (domain->min() >= lb)
return false;
if (domain->max() < lb) {
env.fail();
return false;
}
IntSetRanges dr(domain);
Ranges::Const<IntVal> cr(lb,IntVal::infinity());
Ranges::Inter<IntVal,IntSetRanges,Ranges::Const<IntVal> > i(dr,cr);
IntSetVal* newibv = IntSetVal::ai(i);
id->decl()->ti()->domain(new SetLit(Location().introduce(), newibv));
id->decl()->ti()->setComputedDomain(false);
} else {
id->decl()->ti()->domain(new SetLit(Location().introduce(), IntSetVal::a(lb,IntVal::infinity())));
}
return false;
} else if (e1->type().ispar() && e0->isa<Id>()) {
// less than
Id* id = e0->cast<Id>();
IntVal ub = eval_int(env,e1);
if (id->decl()->ti()->domain()) {
IntSetVal* domain = eval_intset(env,id->decl()->ti()->domain());
if (domain->max() <= ub)
return false;
if (domain->min() > ub) {
env.fail();
return false;
}
IntSetRanges dr(domain);
Ranges::Const<IntVal> cr(-IntVal::infinity(), ub);
Ranges::Inter<IntVal,IntSetRanges,Ranges::Const<IntVal> > i(dr,cr);
IntSetVal* newibv = IntSetVal::ai(i);
id->decl()->ti()->domain(new SetLit(Location().introduce(), newibv));
id->decl()->ti()->setComputedDomain(false);
} else {
id->decl()->ti()->domain(new SetLit(Location().introduce(), IntSetVal::a(-IntVal::infinity(), ub)));
}
}
} else if (c->id()==constants().ids.int_.lin_le) {
ArrayLit* al_c = follow_id(c->args()[0])->cast<ArrayLit>();
if (al_c->v().size()==1) {
ArrayLit* al_x = follow_id(c->args()[1])->cast<ArrayLit>();
IntVal coeff = eval_int(env,al_c->v()[0]);
IntVal y = eval_int(env,c->args()[2]);
IntVal lb = -IntVal::infinity();
IntVal ub = IntVal::infinity();
IntVal r = y % coeff;
if (coeff >= 0) {
ub = y / coeff;
if (r<0) --ub;
} else {
lb = y / coeff;
if (r<0) ++lb;
}
if (Id* id = al_x->v()[0]->dyn_cast<Id>()) {
if (id->decl()->ti()->domain()) {
IntSetVal* domain = eval_intset(env,id->decl()->ti()->domain());
if (domain->max() <= ub && domain->min() >= lb)
return false;
if (domain->min() > ub || domain->max() < lb) {
env.fail();
return false;
}
IntSetRanges dr(domain);
Ranges::Const<IntVal> cr(lb, ub);
Ranges::Inter<IntVal,IntSetRanges,Ranges::Const<IntVal> > i(dr,cr);
IntSetVal* newibv = IntSetVal::ai(i);
id->decl()->ti()->domain(new SetLit(Location().introduce(), newibv));
id->decl()->ti()->setComputedDomain(false);
} else {
id->decl()->ti()->domain(new SetLit(Location().introduce(), IntSetVal::a(lb, ub)));
}
return false;
}
}
}
return true;
}
KeepAlive bind(EnvI& env, Ctx ctx, VarDecl* vd, Expression* e) {
assert(e==NULL || !e->isa<VarDecl>());
if (vd==constants().var_ignore)
return e;
if (Id* ident = e->dyn_cast<Id>()) {
if (ident->decl()) {
VarDecl* e_vd = follow_id_to_decl(ident)->cast<VarDecl>();
e = e_vd->id();
}
}
if (ctx.neg) {
assert(e->type().bt() == Type::BT_BOOL);
if (vd==constants().var_true) {
if (!isfalse(env,e)) {
if (Id* id = e->dyn_cast<Id>()) {
while (id != NULL) {
assert(id->decl() != NULL);
if (id->decl()->ti()->domain() && istrue(env,id->decl()->ti()->domain())) {
GCLock lock;
env.flat_addItem(new ConstraintI(Location().introduce(),constants().lit_false));
} else {
id->decl()->ti()->domain(constants().lit_false);
GCLock lock;
std::vector<Expression*> args(2);
args[0] = id;
args[1] = constants().lit_false;
Call* c = new Call(Location().introduce(),constants().ids.bool_eq,args);
c->decl(env.orig->matchFn(env,c,false));
c->type(c->decl()->rtype(env,args,false));
if (c->decl()->e()) {
flat_exp(env, Ctx(), c, constants().var_true, constants().var_true);
}
}
id = id->decl()->e() ? id->decl()->e()->dyn_cast<Id>() : NULL;
}
return constants().lit_true;
} else {
GC::lock();
BinOp* bo = new BinOp(e->loc(),e,BOT_EQUIV,constants().lit_false);
bo->type(e->type());
KeepAlive ka(bo);
GC::unlock();
EE ee = flat_exp(env,Ctx(),bo,NULL,constants().var_true);
return bind(env,Ctx(),vd,ee.r());
}
}
return constants().lit_true;
} else {
GC::lock();
BinOp* bo = new BinOp(e->loc(),e,BOT_EQUIV,constants().lit_false);
bo->type(e->type());
KeepAlive ka(bo);
GC::unlock();
EE ee = flat_exp(env,Ctx(),bo,NULL,constants().var_true);
return bind(env,Ctx(),vd,ee.r());
}
} else {
if (vd==constants().var_true) {
if (!istrue(env,e)) {
if (Id* id = e->dyn_cast<Id>()) {
assert(id->decl() != NULL);
while (id != NULL) {
if (id->decl()->ti()->domain() && isfalse(env,id->decl()->ti()->domain())) {
GCLock lock;
env.flat_addItem(new ConstraintI(Location().introduce(),constants().lit_false));
} else if (id->decl()->ti()->domain()==NULL) {
id->decl()->ti()->domain(constants().lit_true);
GCLock lock;
std::vector<Expression*> args(2);
args[0] = id;
args[1] = constants().lit_true;
Call* c = new Call(Location().introduce(),constants().ids.bool_eq,args);
c->decl(env.orig->matchFn(env,c,false));
c->type(c->decl()->rtype(env,args,false));
if (c->decl()->e()) {
flat_exp(env, Ctx(), c, constants().var_true, constants().var_true);
}
}
id = id->decl()->e() ? id->decl()->e()->dyn_cast<Id>() : NULL;
}
} else {
GCLock lock;
// extract domain information from added constraint if possible
if (!e->isa<Call>() || checkDomainConstraints(env,e->cast<Call>())) {
env.flat_addItem(new ConstraintI(Location().introduce(),e));
}
}
}
return constants().lit_true;
} else if (vd==constants().var_false) {
if (!isfalse(env,e)) {
throw InternalError("not supported yet");
}