static void ShowVariablesFormatted(EvalContext *ctx)
{
VariableTableIterator *iter = EvalContextVariableTableIteratorNew(ctx, NULL, NULL, NULL);
Variable *v = NULL;
Seq *seq = SeqNew(2000, free);
while ((v = VariableTableIteratorNext(iter)))
{
char *varname = VarRefToString(v->ref, true);
Writer *w = StringWriter();
switch (DataTypeToRvalType(v->type))
{
case RVAL_TYPE_CONTAINER:
JsonWriteCompact(w, RvalContainerValue(v->rval));
break;
default:
RvalWrite(w, v->rval);
}
const char *var_value;
if (StringIsPrintable(StringWriterData(w)))
{
var_value = StringWriterData(w);
}
else
{
var_value = "<non-printable>";
}
StringSet *tagset = EvalContextVariableTags(ctx, v->ref);
Buffer *tagbuf = StringSetToBuffer(tagset, ',');
char *line;
xasprintf(&line, "%-40s %-60s %-40s", varname, var_value, BufferData(tagbuf));
SeqAppend(seq, line);
BufferDestroy(tagbuf);
WriterClose(w);
free(varname);
}
SeqSort(seq, (SeqItemComparator)strcmp, NULL);
printf("%-40s %-60s %-40s\n", "Variable name", "Variable value", "Meta tags");
for (size_t i = 0; i < SeqLength(seq); i++)
{
const char *variable = SeqAt(seq, i);
printf("%s\n", variable);
}
SeqDestroy(seq);
VariableTableIteratorDestroy(iter);
}
static void CheckToString(const char *str)
{
VarRef ref = VarRefParse(str);
char *out = VarRefToString(ref);
assert_string_equal(str, out);
free(out);
VarRefDestroy(ref);
}
static JsonElement *DefaultTemplateData(const EvalContext *ctx)
{
JsonElement *hash = JsonObjectCreate(10);
{
ClassTableIterator *it = EvalContextClassTableIteratorNewGlobal(ctx, NULL, true, true);
Class *cls = NULL;
while ((cls = ClassTableIteratorNext(it)))
{
char *key = ClassRefToString(cls->ns, cls->name);
JsonObjectAppendBool(hash, key, true);
free(key);
}
ClassTableIteratorDestroy(it);
}
{
ClassTableIterator *it = EvalContextClassTableIteratorNewLocal(ctx);
Class *cls = NULL;
while ((cls = ClassTableIteratorNext(it)))
{
char *key = ClassRefToString(cls->ns, cls->name);
JsonObjectAppendBool(hash, key, true);
free(key);
}
ClassTableIteratorDestroy(it);
}
{
VariableTableIterator *it = EvalContextVariableTableIteratorNew(ctx, NULL, NULL, NULL);
Variable *var = NULL;
while ((var = VariableTableIteratorNext(it)))
{
// TODO: need to get a CallRef, this is bad
char *scope_key = ClassRefToString(var->ref->ns, var->ref->scope);
JsonElement *scope_obj = JsonObjectGetAsObject(hash, scope_key);
if (!scope_obj)
{
scope_obj = JsonObjectCreate(50);
JsonObjectAppendObject(hash, scope_key, scope_obj);
}
free(scope_key);
char *lval_key = VarRefToString(var->ref, false);
JsonObjectAppendElement(scope_obj, lval_key, RvalToJson(var->rval));
free(lval_key);
}
VariableTableIteratorDestroy(it);
}
return hash;
}
std::string RvalueToString(std::ostream &os, const Rvalue &x) {
if(x.has_cons())
return ConstToString(x.cons());
if(x.has_binop())
return BinopToString(os, x.binop());
if(x.has_varref()) {
std::string var_ref = VarRefToString(os, x.varref());
std::string val_var = get_var();
os << val_var << " = load i32, i32* " << var_ref << "\n";
return val_var;
}
return "1";
}
char *VarRefMangle(const VarRef *ref)
{
char *suffix = VarRefToString(ref, false);
if (!ref->scope)
{
return suffix;
}
else
{
if (ref->ns)
{
char *mangled = StringFormat("%s*%s#%s", ref->ns, ref->scope, suffix);
free(suffix);
return mangled;
}
else
{
char *mangled = StringFormat("%s#%s", ref->scope, suffix);
free(suffix);
return mangled;
}
}
}
PromiseResult VerifyVarPromise(EvalContext *ctx, const Promise *pp, bool allow_duplicates)
{
ConvergeVariableOptions opts = CollectConvergeVariableOptions(ctx, pp, allow_duplicates);
if (!opts.should_converge)
{
return PROMISE_RESULT_NOOP;
}
Attributes a = { {0} };
// More consideration needs to be given to using these
//a.transaction = GetTransactionConstraints(pp);
a.classes = GetClassDefinitionConstraints(ctx, pp);
VarRef *ref = VarRefParseFromBundle(pp->promiser, PromiseGetBundle(pp));
if (strcmp("meta", pp->parent_promise_type->name) == 0)
{
VarRefSetMeta(ref, true);
}
DataType existing_value_type = CF_DATA_TYPE_NONE;
const void *const existing_value =
IsExpandable(pp->promiser) ? NULL : EvalContextVariableGet(ctx, ref, &existing_value_type);
PromiseResult result = PROMISE_RESULT_NOOP;
Rval rval = opts.cp_save->rval;
if (rval.item != NULL)
{
DataType data_type = DataTypeFromString(opts.cp_save->lval);
if (opts.cp_save->rval.type == RVAL_TYPE_FNCALL)
{
FnCall *fp = RvalFnCallValue(rval);
const FnCallType *fn = FnCallTypeGet(fp->name);
if (!fn)
{
assert(false && "Canary: should have been caught before this point");
FatalError(ctx, "While setting variable '%s' in bundle '%s', unknown function '%s'",
pp->promiser, PromiseGetBundle(pp)->name, fp->name);
}
if (fn->dtype != DataTypeFromString(opts.cp_save->lval))
{
FatalError(ctx, "While setting variable '%s' in bundle '%s', variable declared type '%s' but function '%s' returns type '%s'",
pp->promiser, PromiseGetBundle(pp)->name, opts.cp_save->lval,
fp->name, DataTypeToString(fn->dtype));
}
if (existing_value_type != CF_DATA_TYPE_NONE)
{
// Already did this
VarRefDestroy(ref);
return PROMISE_RESULT_NOOP;
}
FnCallResult res = FnCallEvaluate(ctx, PromiseGetPolicy(pp), fp, pp);
if (res.status == FNCALL_FAILURE)
{
/* We do not assign variables to failed fn calls */
RvalDestroy(res.rval);
VarRefDestroy(ref);
return PROMISE_RESULT_NOOP;
}
else
{
rval = res.rval;
}
}
else
{
Buffer *conv = BufferNew();
bool malformed = false, misprint = false;
if (strcmp(opts.cp_save->lval, "int") == 0)
{
long int asint = IntFromString(opts.cp_save->rval.item);
if (asint == CF_NOINT)
{
malformed = true;
}
else if (0 > BufferPrintf(conv, "%ld", asint))
{
misprint = true;
}
else
{
rval = RvalNew(BufferData(conv), opts.cp_save->rval.type);
}
}
else if (strcmp(opts.cp_save->lval, "real") == 0)
{
double real_value;
if (!DoubleFromString(opts.cp_save->rval.item, &real_value))
{
malformed = true;
}
else if (0 > BufferPrintf(conv, "%lf", real_value))
{
misprint = true;
}
else
{
rval = RvalNew(BufferData(conv), opts.cp_save->rval.type);
}
}
else
{
rval = RvalCopy(opts.cp_save->rval);
}
BufferDestroy(conv);
if (malformed)
{
/* Arises when opts->cp_save->rval.item isn't yet expanded. */
/* Has already been logged by *FromString */
VarRefDestroy(ref);
return PromiseResultUpdate(result, PROMISE_RESULT_FAIL);
}
else if (misprint)
{
/* Even though no problems with memory allocation can
* get here, there might be other problems. */
UnexpectedError("Problems writing to buffer");
VarRefDestroy(ref);
return PROMISE_RESULT_NOOP;
}
else if (rval.type == RVAL_TYPE_LIST)
{
Rlist *rval_list = RvalRlistValue(rval);
RlistFlatten(ctx, &rval_list);
rval.item = rval_list;
}
}
if (Epimenides(ctx, PromiseGetBundle(pp)->ns, PromiseGetBundle(pp)->name, pp->promiser, rval, 0))
{
Log(LOG_LEVEL_ERR, "Variable '%s' contains itself indirectly - an unkeepable promise", pp->promiser);
exit(EXIT_FAILURE);
}
else
{
/* See if the variable needs recursively expanding again */
Rval returnval = EvaluateFinalRval(ctx, PromiseGetPolicy(pp), ref->ns, ref->scope, rval, true, pp);
RvalDestroy(rval);
// freed before function exit
rval = returnval;
}
if (existing_value_type != CF_DATA_TYPE_NONE)
{
if (!opts.ok_redefine) /* only on second iteration, else we ignore broken promises */
{
if (THIS_AGENT_TYPE == AGENT_TYPE_COMMON &&
!CompareRval(existing_value, DataTypeToRvalType(existing_value_type),
rval.item, rval.type))
{
switch (rval.type)
{
case RVAL_TYPE_SCALAR:
Log(LOG_LEVEL_VERBOSE, "Redefinition of a constant scalar '%s', was '%s' now '%s'",
pp->promiser, (const char *)existing_value, RvalScalarValue(rval));
PromiseRef(LOG_LEVEL_VERBOSE, pp);
break;
case RVAL_TYPE_LIST:
{
Log(LOG_LEVEL_VERBOSE, "Redefinition of a constant list '%s'", pp->promiser);
Writer *w = StringWriter();
RlistWrite(w, existing_value);
char *oldstr = StringWriterClose(w);
Log(LOG_LEVEL_VERBOSE, "Old value '%s'", oldstr);
free(oldstr);
w = StringWriter();
RlistWrite(w, rval.item);
char *newstr = StringWriterClose(w);
Log(LOG_LEVEL_VERBOSE, " New value '%s'", newstr);
free(newstr);
PromiseRef(LOG_LEVEL_VERBOSE, pp);
}
break;
case RVAL_TYPE_CONTAINER:
case RVAL_TYPE_FNCALL:
case RVAL_TYPE_NOPROMISEE:
break;
}
}
RvalDestroy(rval);
VarRefDestroy(ref);
return result;
}
}
if (IsCf3VarString(pp->promiser))
{
// Unexpanded variables, we don't do anything with
RvalDestroy(rval);
VarRefDestroy(ref);
return result;
}
if (!IsValidVariableName(pp->promiser))
{
Log(LOG_LEVEL_ERR, "Variable identifier contains illegal characters");
PromiseRef(LOG_LEVEL_ERR, pp);
RvalDestroy(rval);
VarRefDestroy(ref);
return result;
}
if (rval.type == RVAL_TYPE_LIST)
{
if (opts.drop_undefined)
{
for (Rlist *rp = RvalRlistValue(rval); rp; rp = rp->next)
{
if (IsNakedVar(RlistScalarValue(rp), '@'))
{
free(rp->val.item);
rp->val.item = xstrdup(CF_NULL_VALUE);
}
}
}
for (const Rlist *rp = RvalRlistValue(rval); rp; rp = rp->next)
{
switch (rp->val.type)
{
case RVAL_TYPE_SCALAR:
break;
default:
// Cannot assign variable because value is a list containing a non-scalar item
VarRefDestroy(ref);
RvalDestroy(rval);
return result;
}
}
}
if (ref->num_indices > 0)
{
if (data_type == CF_DATA_TYPE_CONTAINER)
{
char *lval_str = VarRefToString(ref, true);
Log(LOG_LEVEL_ERR, "Cannot assign a container to an indexed variable name '%s'. Should be assigned to '%s' instead",
lval_str, ref->lval);
free(lval_str);
VarRefDestroy(ref);
RvalDestroy(rval);
return result;
}
else
{
DataType existing_type = CF_DATA_TYPE_NONE;
VarRef *base_ref = VarRefCopyIndexless(ref);
if (EvalContextVariableGet(ctx, ref, &existing_type) && existing_type == CF_DATA_TYPE_CONTAINER)
{
char *lval_str = VarRefToString(ref, true);
char *base_ref_str = VarRefToString(base_ref, true);
Log(LOG_LEVEL_ERR, "Cannot assign value to indexed variable name '%s', because a container is already assigned to the base name '%s'",
lval_str, base_ref_str);
free(lval_str);
free(base_ref_str);
VarRefDestroy(base_ref);
VarRefDestroy(ref);
RvalDestroy(rval);
return result;
}
VarRefDestroy(base_ref);
}
}
DataType required_datatype = DataTypeFromString(opts.cp_save->lval);
if (rval.type != DataTypeToRvalType(required_datatype))
{
char *ref_str = VarRefToString(ref, true);
char *value_str = RvalToString(rval);
Log(LOG_LEVEL_ERR, "Variable '%s' expected a variable of type '%s', but was given incompatible value '%s'",
ref_str, DataTypeToString(required_datatype), value_str);
PromiseRef(LOG_LEVEL_ERR, pp);
free(ref_str);
free(value_str);
VarRefDestroy(ref);
RvalDestroy(rval);
return PromiseResultUpdate(result, PROMISE_RESULT_FAIL);
}
if (!EvalContextVariablePut(ctx, ref, rval.item, required_datatype, "source=promise"))
{
Log(LOG_LEVEL_VERBOSE,
"Unable to converge %s.%s value (possibly empty or infinite regression)",
ref->scope, pp->promiser);
PromiseRef(LOG_LEVEL_VERBOSE, pp);
result = PromiseResultUpdate(result, PROMISE_RESULT_FAIL);
}
else
{
Rlist *promise_meta = PromiseGetConstraintAsList(ctx, "meta", pp);
if (promise_meta)
{
StringSet *class_meta = EvalContextVariableTags(ctx, ref);
Buffer *print;
for (const Rlist *rp = promise_meta; rp; rp = rp->next)
{
StringSetAdd(class_meta, xstrdup(RlistScalarValue(rp)));
print = StringSetToBuffer(class_meta, ',');
Log(LOG_LEVEL_DEBUG,
"Added tag %s to class %s, tags now [%s]",
RlistScalarValue(rp), pp->promiser, BufferData(print));
BufferDestroy(print);
}
}
}
}
else
{
Log(LOG_LEVEL_ERR, "Variable %s has no promised value", pp->promiser);
Log(LOG_LEVEL_ERR, "Rule from %s at/before line %llu",
PromiseGetBundle(pp)->source_path,
(unsigned long long)opts.cp_save->offset.line);
result = PromiseResultUpdate(result, PROMISE_RESULT_FAIL);
}
/*
* FIXME: Variable promise are exempt from normal evaluation logic still, so
* they are not pushed to evaluation stack before being evaluated. Due to
* this reason, we cannot call cfPS here to set classes, as it will error
* out with ProgrammingError.
*
* In order to support 'classes' body for variables as well, we call
* ClassAuditLog explicitly.
*/
ClassAuditLog(ctx, pp, a, result);
VarRefDestroy(ref);
RvalDestroy(rval);
return result;
}
bool EvalContextVariablePut(EvalContext *ctx, VarRef lval, Rval rval, DataType type)
{
Scope *ptr;
const Rlist *rp;
CfAssoc *assoc;
if (rval.type == RVAL_TYPE_SCALAR)
{
CfDebug("AddVariableHash(%s.%s=%s (%s) rtype=%c)\n", lval.scope, lval.lval, (const char *) rval.item, CF_DATATYPES[type],
rval.type);
}
else
{
CfDebug("AddVariableHash(%s.%s=(list) (%s) rtype=%c)\n", lval.scope, lval.lval, CF_DATATYPES[type], rval.type);
}
if (lval.lval == NULL || lval.scope == NULL)
{
CfOut(OUTPUT_LEVEL_ERROR, "", "scope.value = %s.%s", lval.scope, lval.lval);
ProgrammingError("Bad variable or scope in a variable assignment, should not happen - forgotten to register a function call in fncall.c?");
}
if (rval.item == NULL)
{
CfDebug("No value to assignment - probably a parameter in an unused bundle/body\n");
return false;
}
if (strlen(lval.lval) > CF_MAXVARSIZE)
{
char *lval_str = VarRefToString(lval);
CfOut(OUTPUT_LEVEL_ERROR, "", "Variable %s cannot be added because its length exceeds the maximum length allowed: %d", lval_str, CF_MAXVARSIZE);
free(lval_str);
return false;
}
/* If we are not expanding a body template, check for recursive singularities */
if (strcmp(lval.scope, "body") != 0)
{
switch (rval.type)
{
case RVAL_TYPE_SCALAR:
if (StringContainsVar((char *) rval.item, lval.lval))
{
CfOut(OUTPUT_LEVEL_ERROR, "", "Scalar variable %s.%s contains itself (non-convergent): %s", lval.scope, lval.lval,
(char *) rval.item);
return false;
}
break;
case RVAL_TYPE_LIST:
for (rp = rval.item; rp != NULL; rp = rp->next)
{
if (StringContainsVar((char *) rp->item, lval.lval))
{
CfOut(OUTPUT_LEVEL_ERROR, "", "List variable %s contains itself (non-convergent)", lval.lval);
return false;
}
}
break;
default:
break;
}
}
ptr = ScopeGet(lval.scope);
if (!ptr)
{
ptr = ScopeNew(lval.scope);
if (!ptr)
{
return false;
}
}
// Look for outstanding lists in variable rvals
if (THIS_AGENT_TYPE == AGENT_TYPE_COMMON)
{
Rlist *listvars = NULL;
if (ScopeGetCurrent() && strcmp(ScopeGetCurrent()->scope, "this") != 0)
{
MapIteratorsFromRval(ScopeGetCurrent()->scope, &listvars, rval);
if (listvars != NULL)
{
CfOut(OUTPUT_LEVEL_ERROR, "", " !! Redefinition of variable \"%s\" (embedded list in RHS) in context \"%s\"",
lval.lval, ScopeGetCurrent()->scope);
}
RlistDestroy(listvars);
}
}
assoc = HashLookupElement(ptr->hashtable, lval.lval);
if (assoc)
{
if (CompareVariableValue(rval, assoc) == 0)
{
/* Identical value, keep as is */
}
else
{
/* Different value, bark and replace */
if (!UnresolvedVariables(assoc, rval.type))
{
CfOut(OUTPUT_LEVEL_INFORM, "", " !! Duplicate selection of value for variable \"%s\" in scope %s", lval.lval, ptr->scope);
}
RvalDestroy(assoc->rval);
assoc->rval = RvalCopy(rval);
assoc->dtype = type;
CfDebug("Stored \"%s\" in context %s\n", lval.lval, lval.scope);
}
}
else
{
if (!HashInsertElement(ptr->hashtable, lval.lval, rval, type))
{
ProgrammingError("Hash table is full");
}
}
CfDebug("Added Variable %s in scope %s with value (omitted)\n", lval.lval, lval.scope);
return true;
}
bool EvalContextVariablePut(EvalContext *ctx, VarRef lval, Rval rval, DataType type)
{
assert(type != DATA_TYPE_NONE);
if (lval.lval == NULL || lval.scope == NULL)
{
ProgrammingError("Bad variable or scope in a variable assignment. scope.value = %s.%s", lval.scope, lval.lval);
}
if (rval.item == NULL)
{
return false;
}
if (strlen(lval.lval) > CF_MAXVARSIZE)
{
char *lval_str = VarRefToString(lval, true);
Log(LOG_LEVEL_ERR, "Variable '%s'' cannot be added because its length exceeds the maximum length allowed '%d' characters", lval_str, CF_MAXVARSIZE);
free(lval_str);
return false;
}
// If we are not expanding a body template, check for recursive singularities
if (strcmp(lval.scope, "body") != 0)
{
switch (rval.type)
{
case RVAL_TYPE_SCALAR:
if (StringContainsVar((char *) rval.item, lval.lval))
{
Log(LOG_LEVEL_ERR, "Scalar variable '%s.%s' contains itself (non-convergent), value '%s'", lval.scope, lval.lval,
(char *) rval.item);
return false;
}
break;
case RVAL_TYPE_LIST:
for (const Rlist *rp = rval.item; rp != NULL; rp = rp->next)
{
if (StringContainsVar(rp->item, lval.lval))
{
Log(LOG_LEVEL_ERR, "List variable '%s' contains itself (non-convergent)", lval.lval);
return false;
}
}
break;
default:
break;
}
}
else
{
assert(STACK_FRAME_TYPE_BODY == LastStackFrame(ctx, 0)->type);
}
Scope *put_scope = ScopeGet(lval.scope);
if (!put_scope)
{
put_scope = ScopeNew(lval.scope);
if (!put_scope)
{
return false;
}
}
// Look for outstanding lists in variable rvals
if (THIS_AGENT_TYPE == AGENT_TYPE_COMMON)
{
Rlist *listvars = NULL;
Rlist *scalars = NULL; // TODO what do we do with scalars?
if (ScopeGetCurrent() && strcmp(ScopeGetCurrent()->scope, "this") != 0)
{
MapIteratorsFromRval(ctx, ScopeGetCurrent()->scope, &listvars, &scalars, rval);
if (listvars != NULL)
{
Log(LOG_LEVEL_ERR, "Redefinition of variable '%s' (embedded list in RHS) in context '%s'",
lval.lval, ScopeGetCurrent()->scope);
}
RlistDestroy(listvars);
RlistDestroy(scalars);
}
}
// FIX: lval is stored with array params as part of the lval for legacy reasons.
char *final_lval = VarRefToString(lval, false);
CfAssoc *assoc = HashLookupElement(put_scope->hashtable, final_lval);
if (assoc)
{
if (CompareVariableValue(rval, assoc) != 0)
{
/* Different value, bark and replace */
if (!UnresolvedVariables(assoc, rval.type))
{
Log(LOG_LEVEL_INFO, "Replaced value of variable '%s' in scope '%s'", lval.lval, put_scope->scope);
}
RvalDestroy(assoc->rval);
assoc->rval = RvalCopy(rval);
assoc->dtype = type;
}
}
else
{
if (!HashInsertElement(put_scope->hashtable, final_lval, rval, type))
{
ProgrammingError("Hash table is full");
}
}
free(final_lval);
return true;
}
std::ostream &operator<<(std::ostream &os, const AssignmentStatement &x) {
std::string rvalue = RvalueToString(os, x.rvalue());
std::string var_ref = VarRefToString(os, x.varref());
return os << "store i32 " << rvalue << ", i32* " << var_ref << "\n";
}
