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variableSystem.cpp
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// variableSystem.cpp - manage user variables ($variables)
#include "common.h"
int bbb = 0;
#ifdef INFORMATION
There are 5 kinds of variables.
1. User variables beginning wih $(regular and transient which begin with $$)
2. Wildcard variables beginning with _
3. Fact sets beginning with @
4. Function variables beginning with ^
5. System variables beginning with %
#endif
unsigned int userVariableThreadList = 0;
int impliedSet = ALREADY_HANDLED; // what fact set is involved in operation
int impliedWild = ALREADY_HANDLED; // what wildcard is involved in operation
char impliedOp = 0; // for impliedSet, what op is in effect += =
int wildcardIndex = 0;
char wildcardOriginalText[MAX_WILDCARDS+1][MAX_USERVAR_SIZE+1]; // spot wild cards can be stored
char wildcardCanonicalText[MAX_WILDCARDS+1][MAX_USERVAR_SIZE+1]; // spot wild cards can be stored
unsigned int wildcardPosition[MAX_WILDCARDS+1]; // spot it started and ended in sentence
char wildcardSeparator[2];
// list of active variables needing saving
WORDP tracedFunctionsList[MAX_TRACED_FUNCTIONS];
unsigned int kernelVariableThreadList = 0;
unsigned int botVariableThreadList = 0;
unsigned int tracedFunctionsIndex;
unsigned int modifiedTraceVal = 0;
bool modifiedTrace = false;
void InitVariableSystem()
{
*wildcardSeparator = ' ';
wildcardSeparator[1] = 0;
kernelVariableThreadList = botVariableThreadList = userVariableThreadList = tracedFunctionsIndex = 0;
}
int GetWildcardID(char* x) // wildcard id is "_10" or "_3"
{
if (!IsDigit(x[1])) return ILLEGAL_MATCHVARIABLE;
unsigned int n = x[1] - '0';
char c = x[2];
if (IsDigit(c)) n = (n * 10) + (c - '0');
return (n > MAX_WILDCARDS) ? ILLEGAL_MATCHVARIABLE : n;
}
static void CompleteWildcard()
{
WORDP D = FindWord(wildcardCanonicalText[wildcardIndex]);
if (D && D->properties & D->internalBits & UPPERCASE_HASH) // but may not be found if original has plural or such or if uses _
{
strcpy(wildcardCanonicalText[wildcardIndex],D->word);
}
++wildcardIndex;
if (wildcardIndex > MAX_WILDCARDS) wildcardIndex = 0;
}
void JoinMatch(int start, int end,int index,bool inpattern)
{
// concatenate the match value
bool started = false;
for (int i = start; i <= end; ++i)
{
if (i < 1 || i > wordCount) continue; // ignore off end
if (unmarked[i]) continue; // ignore words masked
char* word = wordStarts[i];
if (started)
{
strcat(wildcardOriginalText[index], wildcardSeparator);
strcat(wildcardCanonicalText[index], wildcardSeparator);
}
else started = true;
strcat(wildcardOriginalText[index], word);
if (wordCanonical[i]) strcat(wildcardCanonicalText[index], wordCanonical[i]);
else strcat(wildcardCanonicalText[index], word);
}
if (strstr(wildcardCanonicalText[index], "unknown-word")) strcpy(wildcardCanonicalText[index], "unknown-word"); // if any are unknown, the composite is unknown
bbb = 1;
WORDP D;
if (uppercaseFind > 0 && uppercaseFind != 0x01000000) D = Index2Word((uppercaseFind & 0x00ffffff));
else D = FindWord(wildcardCanonicalText[index], 0, STANDARD_LOOKUP);
if (D) strcpy(wildcardCanonicalText[index], D->word); // but may not be found if original has plural or such or if uses _
if (uppercaseFind > 0 && uppercaseFind != 0x01000000) D = Index2Word((uppercaseFind & 0x00ffffff));
else D = FindWord(wildcardOriginalText[index], 0, STANDARD_LOOKUP);
if (D) strcpy(wildcardOriginalText[index], D->word); // but may not be found if original has plural or such or if uses _
bbb = 0;
uppercaseFind = -1; // use it up
if (trace & TRACE_OUTPUT && !inpattern && CheckTopicTrace()) Log(STDTRACELOG, (char*)"_%d=%s/%s ", index, wildcardOriginalText[index], wildcardCanonicalText[index]);
}
void SetWildCard(int start, int end, bool inpattern)
{
if (end < start) end = start; // matched within a token
if (end > wordCount)
{
if (start != end) end = wordCount; // for start==end we allow being off end, eg _>
else start = end = wordCount;
}
while (unmarked[start]) ++start; // skip over unmarked words at start
while (unmarked[end]) --end; // skip over unmarked words at end
wildcardPosition[wildcardIndex] = start | (end << 16);
*wildcardOriginalText[wildcardIndex] = 0;
*wildcardCanonicalText[wildcardIndex] = 0;
if (start == 0 || wordCount == 0 || (end == 0 && start != 1) ) // null match, like _{ .. }
{
++wildcardIndex;
if (wildcardIndex > MAX_WILDCARDS) wildcardIndex = 0;
}
else // did match
{
JoinMatch(start, end,wildcardIndex,inpattern);
CompleteWildcard();
}
}
void SetWildCardGiven(int start, int end, bool inpattern, int index)
{
if (end < start) end = start; // matched within a token
if (end > wordCount)
{
if (start != end) end = wordCount + 1; // for start==end we allow being off end, eg _>
else start = end = wordCount + 1;
}
*wildcardOriginalText[index] = 0;
*wildcardCanonicalText[index] = 0;
while (unmarked[start]) ++start; // skip over unmarked words at start
while (unmarked[end]) --end; // skip over unmarked words at end
wildcardPosition[index] = start | (end << 16);
if (start == 0 || wordCount == 0 || (end == 0 && start != 1) ) // null match, like _{ .. }
{
}
else JoinMatch(start, end, index, inpattern); // did match
}
void SetWildCardNull()
{
SetWildCardGivenValue((char*)"", (char*)"",0,0, wildcardIndex);
CompleteWildcard();
}
void SetWildCardGivenValue(char* original, char* canonical,int start, int end, int index)
{
if (end < start) end = start; // matched within a token
if (end > wordCount && start != end) end = wordCount; // for start==end we allow being off end, eg _>
wildcardPosition[index] = start | (end << 16);
*wildcardOriginalText[index] = 0;
*wildcardCanonicalText[index] = 0;
if (start == 0 || wordCount == 0 || (end == 0 && start != 1) ) // null match, like _{ .. }
{
}
else JoinMatch(start, end, index, false); // did match
}
void SetWildCardIndexStart(int index)
{
wildcardIndex = index;
}
void SetWildCard(char* value, char* canonicalValue,const char* index,unsigned int position)
{
// adjust values to assign
if (!value) value = "";
if (!canonicalValue) canonicalValue = "";
if (strlen(value) > MAX_USERVAR_SIZE)
{
value[MAX_USERVAR_SIZE] = 0;
ReportBug((char*)"Too long matchvariable original value %s",value)
}
if (strlen(canonicalValue) > MAX_USERVAR_SIZE)
{
canonicalValue[MAX_USERVAR_SIZE] = 0;
ReportBug((char*)"Too long matchvariable canonical value %s",value)
}
while (value[0] == ' ') ++value;
while (canonicalValue && canonicalValue[0] == ' ') ++canonicalValue;
// store the values
if (index) wildcardIndex = GetWildcardID((char*)index);
strcpy(wildcardOriginalText[wildcardIndex],value);
strcpy(wildcardCanonicalText[wildcardIndex],(canonicalValue) ? canonicalValue : value);
wildcardPosition[wildcardIndex] = position | (position << 16);
CompleteWildcard();
}
char* GetwildcardText(unsigned int i, bool canon)
{
if (i > MAX_WILDCARDS) return "";
return canon ? wildcardCanonicalText[i] : wildcardOriginalText[i];
}
char* GetUserVariable(const char* word,bool nojson,bool fortrace)
{
int len = 0;
const char* separator = (nojson) ? (const char*) NULL : strchr(word,'.');
const char* bracket = (nojson) ? (const char*) NULL : strchr(word,'[');
if (!separator && bracket) separator = bracket;
if (bracket && bracket < separator) separator = bracket; // this happens first
if (separator) len = separator - word;
bool localvar = strstr(word,"$_") != NULL; // local var anywhere in the chain?
char* item = NULL;
char* answer;
char path[MAX_WORD_SIZE];
*path = 0;
WORDP D = FindWord((char*) word,len,LOWERCASE_LOOKUP);
if (!D) { goto NULLVALUE; } // no such variable
item = D->w.userValue;
if (localvar) // is $_local variable whose value we get
{
if (!item) goto NULLVALUE;
if (*item == LCLVARDATA_PREFIX && item[1] == LCLVARDATA_PREFIX) // should be true
{
item += 2; // skip `` marker
}
}
else if (!item) goto NULLVALUE; // null value normal
if (separator) // json object or array follows this
{
if (fortrace) localvar = false; // dont allocate memory
strcpy(path,item);
LOOPDEEPER:
FACT* factvalue = NULL;
if (IsDigitWord(item, AMERICAN_NUMBERS) && (!strnicmp(separator,".subject",8) || !strnicmp(separator,".verb",5) ||!strnicmp(separator,".object",7)) ) // fact id?
{
int val = atoi(item);
factvalue = Index2Fact(val);
if (!factvalue) goto NULLVALUE;
}
else D = FindWord(item); // the basic item
if (!D) goto NULLVALUE;
if (*separator == '.' && strncmp(item,"jo-",3) && !factvalue) goto NULLVALUE; // cannot be dotted
if (*separator == '[' && strncmp(item,"ja-",3)) goto NULLVALUE; // cannot be indexed
// is there more later
char* separator1 = (char*)strchr(separator+1,'.'); // more dot like $x.y.z?
char* bracket1 = (char*)strchr(separator+1,'['); // more [ like $x[y][z]?
if (!bracket1) bracket1 = (char*)strchr(separator+1,']'); // is there a closer as final
if (bracket1 && !separator1) separator1 = bracket1;
if (bracket1 && bracket1 < separator1) separator1 = bracket1;
// get the label for this current separator
char* label = (char*)separator + 1;
if (separator1)
{
len = (separator1 - label);
if (*(separator1-1) == ']') --len; // prior close of array ref
}
else len = 0;
WORDP key;
if (factvalue)
{
if (separator[1] == 's' || separator[1] == 'S') label = "subject";
else if (separator[1] == 'v' || separator[1] == 'V') label = "verb";
else label = "object";
}
else if (*separator == '.') // it is a key
{
key = FindWord(label,len,PRIMARY_CASE_ALLOWED); // case sensitive find
if (!key) goto NULLVALUE; // dont recognize such a name
label = key->word;
if (separator[1] == '$') // indirection
{
label = GetUserVariable(key->word); // key is a variable name , go get it to use real key
key = FindWord(label);
if (!key) goto NULLVALUE; // cannot find
}
}
else // it is an index - of either array OR object
{
if (IsDigit(*label))
{
char* end = strchr(label,']');
key = FindWord(label,end-label);
if (!key) goto NULLVALUE;
label = key->word;
}
else if (*label == '$') // indirect
{
char val[MAX_WORD_SIZE];
strncpy(val,label,len);
val[len] = 0;
label = GetUserVariable(val); // key is a variable name or index, go get it to use real key
if (IsDigit(*label)) key = FindWord(label);
if (!IsDigit(*label)) goto NULLVALUE;
}
else goto NULLVALUE; // not a number or indirect
}
if (*separator == '.') strcat(path,".");
else strcat(path,"[");
strcat(path,label);
if (*separator != '.') strcat(path,"]");
if (factvalue) // $x.subject
{
if (separator[1] == 's' || separator[1] == 'S') answer = Meaning2Word(factvalue->subject)->word;
else if (separator[1] == 'v' || separator[1] == 'V') answer = Meaning2Word(factvalue->verb)->word;
else answer = Meaning2Word(factvalue->object)->word;
separator = separator1;
if (!separator) goto ANSWER;
item = answer;
goto LOOPDEEPER;
}
FACT* F = GetSubjectNondeadHead(D);
MEANING verb = MakeMeaning(key);
while (F)
{
if (F->verb == verb)
{
answer = Meaning2Word(F->object)->word;
if (!strcmp(answer,"null"))
{
item = "``";
return item + 2; // null value for locals
}
// does it continue?
if (separator1 && *separator1 == ']') ++separator1; // after current key/index there is another
if (separator1 && *separator1) // after current key/index there is another
{
item = answer;
separator = separator1;
goto LOOPDEEPER;
}
goto ANSWER;
}
F = GetSubjectNondeadNext(F);
}
goto NULLVALUE;
}
answer = item;
// OLD NO LONGER VALID? if item is in fact & there are problems return (*item == '&') ? (item + 1) : item; // value is quoted or not
ANSWER:
if (localvar)
{
char* limit;
char* ans = InfiniteStack(limit,"GetUserVariable"); // has complete
strcpy(ans,"``");
strcpy(ans+2,answer);
CompleteBindStack();
if (*path && trace & TRACE_VARIABLE && !fortrace) Log(STDTRACELOG,"(%s->%s)",path,ans);
return ans + 2;
}
if (*path && trace & TRACE_VARIABLE && !fortrace) Log(STDTRACELOG,"(%s->%s)",path,answer);
return answer;
NULLVALUE:
if (localvar)
{
item = "``";
return item + 2; // null value for locals
}
return "";
}
void ClearUserVariableSetFlags()
{
unsigned int varthread = userVariableThreadList;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
RemoveInternalFlag(D, VAR_CHANGED);
}
}
void ShowChangedVariables()
{
unsigned int varthread = userVariableThreadList;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
char* value = D->w.userValue;
if (value && *value) Log(1,(char*)"%s = %s\r\n",D->word,value);
else Log(1,(char*)"%s = null\r\n",D->word);
}
}
void PrepareVariableChange(WORDP D,char* word,bool init)
{
if (D->word[1] == '_') // tmp var
{
if (init) D->w.userValue = NULL;
}
else if (!(D->internalBits & VAR_CHANGED)) // not changed already this volley
{
char* data = AllocateHeap(NULL, 2, 4); // word aligned
((unsigned int*)data)[0] = userVariableThreadList;
((unsigned int*)data)[1] = Word2Index(D);
userVariableThreadList = Heap2Index(data);
if (init) D->w.userValue = NULL;
D->internalBits |= VAR_CHANGED; // bypasses even locked preexisting variables
}
}
void SetUserVariable(const char* var, char* word, bool assignment)
{
if (!stricmp(var, "$_specialty"))
{
int xx = 0;
}
char varname[MAX_WORD_SIZE];
MakeLowerCopy(varname,(char*)var);
WORDP D = StoreWord(varname); // find or create the var.
if (!D) return; // ran out of memory
#ifndef DISCARDTESTING
if (debugVar) (*debugVar)(varname, word);
#endif
// adjust value
if (word) // has a nonnull value?
{
if (!*word || !stricmp(word,(char*)"null") ) word = NULL; // really is null
else // some value
{
bool purelocal = (D->word[1] == LOCALVAR_PREFIX);
if (purelocal) word = AllocateStack(word,0,true); // trying to save on permanent space
else word = AllocateHeap(word,0,1,false,purelocal); // we may be restoring old value which doesnt need allocation
if (!word) return;
}
}
PrepareVariableChange(D,word,true);
if (planning && !documentMode) // handle undoable assignment (cannot use text sharing as done in document mode)
{
if (D->w.userValue == NULL) SpecialFact(MakeMeaning(D),(MEANING)1,0);
else SpecialFact(MakeMeaning(D),(MEANING) (D->w.userValue - heapBase ),0);
}
D->w.userValue = word;
// tokencontrol changes are noticed by the engine
if (!stricmp(var,(char*)"$cs_token"))
{
int64 val = 0;
if (word && *word) ReadInt64(word,val);
else
{
val = (DO_INTERJECTION_SPLITTING|DO_SUBSTITUTE_SYSTEM|DO_NUMBER_MERGE|DO_PROPERNAME_MERGE|DO_SPELLCHECK);
if (!stricmp(language,"english")) val |= DO_PARSE;
}
tokenControl = val;
}
// cs_float changes are noticed by the engine
if (!stricmp(var, (char*)"$cs_fullfloat"))
fullfloat = (word && *word) ? true : false;
// cs_numbers changes are noticed by the engine (india, french, other)
else if (!stricmp(var, (char*)"$cs_numbers"))
{
if (!word) numberStyle = AMERICAN_NUMBERS;
else if (!stricmp(word, "indian")) numberStyle = INDIAN_NUMBERS;
else if (!stricmp(word, "french")) numberStyle = FRENCH_NUMBERS;
else numberStyle = AMERICAN_NUMBERS;
if (numberStyle == FRENCH_NUMBERS)
{
numberComma = '.';
numberPeriod = ',';
}
else
{
numberComma = ',';
numberPeriod = '.';
}
}
// trace
else if (!stricmp(var,(char*)"$cs_trace"))
{
int64 val = 0;
if (word && *word) ReadInt64(word,val);
trace = (unsigned int)val;
if (assignment) // remember script changed it
{
modifiedTraceVal = trace;
modifiedTrace = true;
}
}
// output random choice selection
else if (!stricmp(var, (char*)"$cs_outputchoice"))
{
int64 val = -1;
if (word && *word) ReadInt64(word, val);
outputchoice = (unsigned int)val;
}
// responsecontrol changes are noticed by the engine
else if (!stricmp(var,(char*)"$cs_response"))
{
int64 val = 0;
if (word && *word) ReadInt64(word,val);
else val = ALL_RESPONSES;
responseControl = (unsigned int)val;
}
// cs_botid changes are noticed by the engine
else if (!stricmp(var,(char*)"$cs_botid"))
{
int64 val = 0;
if (word && *word) ReadInt64(word,val);
myBot = (uint64)val;
}
// wildcardseparator changes are noticed by the engine
else if (!stricmp(var,(char*)"$cs_wildcardSeparator"))
{
if (*word == '\\') *wildcardSeparator = word[2];
else *wildcardSeparator = (*word == '"') ? word[1] : *word; // 1st char in string if need be
}
if (trace && D->internalBits & MACRO_TRACE)
{
char pattern[110];
char label[MAX_LABEL_SIZE];
GetPattern(currentRule,label,pattern,100); // go to output
Log(ECHOSTDTRACELOG,"%s -> %s at %s.%d.%d %s %s\r\n",D->word,word, GetTopicName(currentTopicID),TOPLEVELID(currentRuleID),REJOINDERID(currentRuleID),label,pattern);
}
}
FunctionResult Add2UserVariable(char* var, char* moreValue,char* op,char* originalArg)
{
// get original value
char minusflag = *op;
char* oldValue;
if (*var == '_') oldValue = GetwildcardText(GetWildcardID(var),true); // onto a wildcard
else if (*var == USERVAR_PREFIX) oldValue = GetUserVariable(var); // onto user variable
else if (*var == '^') oldValue = FNVAR(var+1); // onto function argument
else return FAILRULE_BIT; // illegal
// get augment value
if (*moreValue == '_') moreValue = GetwildcardText(GetWildcardID(moreValue),true);
else if (*moreValue == USERVAR_PREFIX) moreValue = GetUserVariable(moreValue);
else if (*moreValue == '^') moreValue = FNVAR(moreValue+1);
// try json array set op?
if (!strnicmp(oldValue, "ja-",3))
{
if (*op != '+') return FAILRULE_BIT;
FunctionResult result = NOPROBLEM_BIT;
WORDP old = FindWord(oldValue);
char junk[10];
if (!strnicmp(moreValue, "ja-", 3))
{
char* limit;
FACT* F = GetSubjectNondeadHead(FindWord(moreValue));
FACT** stack = (FACT**)InfiniteStack64(limit, "array merge");
int index = 0;
while (F) // stack object key data
{
if (F->flags & JSON_ARRAY_FACT) stack[index++] = F;
F = GetSubjectNondeadNext(F);
}
CompleteBindStack64(index, (char*)stack);
for (int i = index-1; i >= 0; --i)
{
F = stack[i];
unsigned int flags = JSON_ARRAY_FACT | (F->flags & JSON_OBJECT_FLAGS);
if (oldValue[3] == 't') flags |= FACTTRANSIENT;
MEANING value = F->object;
result = DoJSONArrayInsert(true,old, value, flags, junk);
if (result == FAILRULE_BIT) break;
}
ReleaseStack((char*)stack);
}
else
{
unsigned int flags = JSON_ARRAY_FACT;
if (oldValue[3] == 't') flags |= FACTTRANSIENT;
MEANING value = jsonValue(moreValue, flags);
result = DoJSONArrayInsert(true,old, value, flags,junk);
}
return result;
}
// perform numeric op
bool floating = false;
if (strchr(oldValue,'.') || strchr(moreValue,'.') || *op == '/' ) floating = true;
char result[MAX_WORD_SIZE];
if (floating)
{
double newval = Convert2Float(oldValue);
double more = Convert2Float(moreValue);
if (minusflag == '-') newval -= more;
else if (minusflag == '*') newval *= more;
else if (minusflag == '/') {
if (more == 0) return FAILRULE_BIT; // cannot divide by 0
newval /= more;
}
else if (minusflag == '%')
{
if (more == 0) return FAILRULE_BIT;
int64 ivalue = (int64) newval;
int64 morval = (int64) more;
newval = (double) (ivalue % morval);
}
else newval += more;
WriteFloat(result,newval);
if (trace & TRACE_OUTPUT && CheckTopicTrace()) Log(STDTRACELOG,(char*)" %s ",result);
}
else
{
int64 newval;
ReadInt64(oldValue,newval);
int64 more;
ReadInt64(moreValue,more);
if (minusflag == '-') newval -= more;
else if (minusflag == '*') newval *= more;
else if (minusflag == '/')
{
if (more == 0) return FAILRULE_BIT; // cannot divide by 0
newval /= more;
}
else if (minusflag == '%')
{
if (more == 0) return FAILRULE_BIT;
newval %= more;
}
else if (minusflag == '|')
{
newval |= more;
if (op[1] == '^') newval ^= more;
}
else if (minusflag == '&') newval &= more;
else if (minusflag == '^') newval ^= more;
else if (minusflag == '<') newval <<= more;
else if (minusflag == '>') newval >>= more;
else newval += more;
char tracex[MAX_WORD_SIZE];
#ifdef WIN32
sprintf(result,(char*)"%I64d",newval);
#else
sprintf(result,(char*)"%lld",newval);
#endif
if (trace & TRACE_OUTPUT && CheckTopicTrace())
{
sprintf(tracex,"0x%016llx",newval);
Log(STDTRACELOG,(char*)" %s/%s ",result,tracex);
}
}
// store result back
if (*var == '_')
SetWildCard(result,result,var,0);
else if (*var == USERVAR_PREFIX)
{
char* dot = strchr(var,'.');
if (!dot) SetUserVariable(var,result,true);
else JSONVariableAssign(var,result);// json object insert
}
else if (*var == '^') strcpy(FNVAR(var+1),result);
return NOPROBLEM_BIT;
}
static void SetBotVars(unsigned int varthread)
{
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
D->w.userValue = Index2Heap(cell[2]);
}
}
void ReestablishBotVariables() // refresh bot variables in case user overwrote them
{
SetBotVars(botVariableThreadList);
SetBotVars(kernelVariableThreadList);
}
void ClearBotVariables()
{
kernelVariableThreadList = 0;
botVariableThreadList = 0;
}
void NoteBotVariables() // system defined variables
{
unsigned int varthread = userVariableThreadList;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
if (D->word[1] != LOCALVAR_PREFIX && D->word[1] != TRANSIENTVAR_PREFIX) // not a transient var
{
if (!strnicmp(D->word,"$cs_",4)) continue; // dont force these, they are for user
int* data = (int*)AllocateHeap(NULL, 3, 4);
data[0] = botVariableThreadList;
data[1] = Word2Index(D);
data[2] = Heap2Index(D->w.userValue);
botVariableThreadList = Heap2Index((char*)data);
}
RemoveInternalFlag(D,VAR_CHANGED);
}
userVariableThreadList = 0;
}
void MigrateUserVariables()
{
unsigned int varthread = userVariableThreadList; // does not include $_ locals
userVariableThreadList = 0;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
D->w.userValue = AllocateStack(D->w.userValue, 0);
D->word = AllocateStack(D->word, 0); // reallocate name
// recreate thread list
unsigned int* data = (unsigned int*)AllocateStack(NULL, 8, false, true); // allocate list
data[0] = userVariableThreadList;
data[1] = cell[1];
userVariableThreadList = Stack2Index((char*)data);
}
}
void RecoverUserVariables()
{
unsigned int varthread = userVariableThreadList;
userVariableThreadList = 0;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Stack(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]); // 0 based
D->w.userValue = AllocateHeap(D->w.userValue, 0);
D->word = AllocateHeap(D->word, 0);
unsigned int* data = (unsigned int*)AllocateHeap(NULL, 2, 4); // allocate list
data[0] = userVariableThreadList;
data[1] = cell[1];
userVariableThreadList = Heap2Index((char*)data);
}
}
void ClearUserVariables(char* above)
{
unsigned int varthread = userVariableThreadList;
unsigned int* prevcell = 0;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
if (!above) // removing ALL variables
{
D->w.userValue = NULL;
RemoveInternalFlag(D,VAR_CHANGED);
}
else if (D->w.userValue < above) // heap spaces runs DOWN, so this passes more recent entries into here
{
if (prevcell) prevcell[0] = varthread; // previous needs to point to next
else userVariableThreadList = varthread; // potential new start of list
}
else prevcell = cell; // keeping this one, so remember it
}
if (!above) userVariableThreadList = 0;
}
// This is the comparison function for the sort operation.
static int compareVariables(const void *var1, const void *var2)
{
return strcmp((*(WORDP *)var1)->word, (*(WORDP *)var2)->word);
}
static void ListVariables(char* header,unsigned int varthread)
{
char* value;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
value = D->w.userValue;
if (value && *value) Log(STDTRACELOG, (char*)" %s variable: %s = %s\r\n", header,D->word, value);
}
}
void DumpUserVariables()
{
char* value;
ListVariables("preboot", kernelVariableThreadList);
ListVariables("boot", botVariableThreadList);
// count entries
int counter = 0;
unsigned int varthread = userVariableThreadList;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
++counter;
}
// Show the user variables in alphabetically sorted order.
WORDP *arySortVariablesHelper = (WORDP*) AllocateStack(NULL,((counter) ? counter : 1) * sizeof(WORDP));
// Load the array.
varthread = userVariableThreadList;
int i = 0;
while (varthread)
{
unsigned int* cell = (unsigned int*)Index2Heap(varthread);
varthread = cell[0];
WORDP D = Index2Word(cell[1]);
arySortVariablesHelper[i++] = D;
}
// Sort it.
qsort(arySortVariablesHelper, counter, sizeof(WORDP), compareVariables);
// Display the variables in sorted order.
for (i = 0; i < counter; ++i)
{
WORDP D = arySortVariablesHelper[i];
value = D->w.userValue;
if (value && *value)
{
if (!stricmp(D->word, "$cs_token"))
{
Log(STDTRACELOG, " variable: $cs_token decoded = ");
int64 val;
ReadInt64(value, val);
DumpTokenControls(val);
Log(STDTRACELOG, "\r\n");
}
else Log(STDTRACELOG, " variable: %s = %s\r\n", D->word, value);
}
}
ReleaseStack((char*) arySortVariablesHelper); // short term
}
char* PerformAssignment(char* word,char* ptr,char* buffer,FunctionResult &result,bool nojson)
{// assign to and from $var, _var, ^var, @set, and %sysvar
char op[MAX_WORD_SIZE];
currentFact = NULL; // No assignment can start with a fact lying around
int oldImpliedSet = impliedSet; // in case nested calls happen
int oldImpliedWild = impliedWild; // in case nested calls happen
int assignFromWild = ALREADY_HANDLED;
result = NOPROBLEM_BIT;
if (*word == '^' && word[1] == '^' && IsDigit(word[2])) // indirect function variable assign
{
char* value = FNVAR(word+2);
if (*value == LCLVARDATA_PREFIX && value[1] == LCLVARDATA_PREFIX)// not allowed to write indirect to caller arg
{
result = FAILRULE_BIT;
return ptr;
}
strcpy(word,value); // change over to indirect to assign onto
strcpy(word,GetUserVariable(word)); // now indirect thru him if we can
if (!*word)
{
result = FAILRULE_BIT;
return ptr;
}
}
else if (*word == '^' && IsDigit(word[1])) // indirect function variable assign
{
char* value = FNVAR(word+1);
if (*value == LCLVARDATA_PREFIX && value[1] == LCLVARDATA_PREFIX)// not allowed to write indirect to caller arg
{
result = FAILRULE_BIT;
return ptr;
}
strcpy(word,value); // change over to assign onto caller var
}
impliedSet = ALREADY_HANDLED;
impliedWild = ALREADY_HANDLED;
if (*word == '@')
{
impliedSet = GetSetID(word);
if (impliedSet == ILLEGAL_FACTSET)
{
result = FAILRULE_BIT;
return ptr;
}
char* at = word + 1;
while (*++at && IsDigit(*at)){;} // find end
if (*at) // not allowed to assign onto annotated factset
{
result = FAILRULE_BIT;
return ptr;
}
}
else if (*word == '_')
{
impliedWild = GetWildcardID(word); // if a wildcard save location
if (impliedWild == ILLEGAL_MATCHVARIABLE)
{
result = FAILRULE_BIT;
return ptr;
}
}
int setToImply = impliedSet; // what he originally requested
int setToWild = impliedWild; // what he originally requested
bool otherassign = (*word != '@') && (*word != '_');
// Get assignment operator
ptr = ReadCompiledWord(ptr,op); // assignment operator = += -= /= *= %= ^= |= &=
impliedOp = *op;
if (*op == '=' && impliedSet >= 0) SET_FACTSET_COUNT(impliedSet,0); // force to be empty for @0 = ^first(...)
char originalWord1[MAX_WORD_SIZE];
ReadCompiledWord(ptr,originalWord1);
// get the from value
assignFromWild = (*ptr == '_' && IsDigit(ptr[1])) ? GetWildcardID(ptr) : -1;
if (*word == '_' && *ptr == '\'' && ptr[1] == '_' && IsDigit(ptr[2]))
{
assignFromWild = GetWildcardID(ptr + 1); // allow quoted assign across
ptr = ReadCompiledWord(ptr + 1, buffer);
}
else if (assignFromWild >= 0 && *word == '_') ptr = ReadCompiledWord(ptr,buffer); // assigning from wild to wild. Just copy across
else
{
ptr = GetCommandArg(ptr,buffer,result,OUTPUT_NOCOMMANUMBER|ASSIGNMENT); // need to see null assigned -- store raw numbers, not with commas, lest relations break
if (*buffer == '#') // substitute a constant? user type-in :set command for example
{
uint64 n = FindValueByName(buffer+1);
if (!n) n = FindSystemValueByName(buffer+1);
if (n)
{
#ifdef WIN32
sprintf(buffer,(char*)"%I64d",(long long int) n);
#else
sprintf(buffer,(char*)"%lld",(long long int) n);
#endif
}
}
if (result & ENDCODES) goto exit;
// impliedwild will be used up when spreading a fact by assigned. impliedset will get used up if assigning to a factset.
// assigning to a var is simple
// A fact was created but not used up by retrieving some field of it. Convert to a reference to fact.
// if we already did a conversion into a set or wildcard, dont do it here. Otherwise do it now into those or $uservars.
// DO NOT CHANGE TO add: if settowild != IMPLIED_WILD. that introduces a bug assigning to $vars.
// if he original requested to assign to and the assignment has been done, then we dont need to do anything
if ((setToImply != impliedSet && setToImply != ALREADY_HANDLED) || (setToWild != impliedWild && setToWild != ALREADY_HANDLED) ) currentFact = NULL; // used up
// A fact was created but not used up by retrieving some field of it. Convert to a reference to fact. -- eg $$f = createfact()
else if (currentFact && setToImply == impliedSet && setToWild == impliedWild && (setToWild != ALREADY_HANDLED || setToImply != ALREADY_HANDLED || otherassign)) sprintf(buffer,(char*)"%d",currentFactIndex());
}
// normally null is empty string, but for assignment allow the word, which means null as in removal
if (!stricmp(buffer,(char*)"null") && (*word != USERVAR_PREFIX || !strchr(word,'.'))) *buffer = 0;
// now sort out who we are assigning into and if its arithmetic or simple assign
if (*word == '@')
{
if (trace & TRACE_OUTPUT && CheckTopicTrace()) Log(STDTRACETABLOG,(char*)"%s(%s) %s %s => ",word,GetUserVariable(word),op,originalWord1);
if (impliedSet == ALREADY_HANDLED){;}
else if (!*buffer && *op == '=') // null assign to set as a whole
{
if (*originalWord1 == '^') {;} // presume its a factset function and it has done its job - @0 = next(fact @1fact)
else SET_FACTSET_COUNT(impliedSet,0);
}
else if (*buffer == '@') // set to set operator
{
FACT* F;
int rightSet = GetSetID(buffer);
if (rightSet == ILLEGAL_FACTSET)
{
result = FAILRULE_BIT;
impliedOp = 0;
goto exit;
}
unsigned int rightCount = FACTSET_COUNT(rightSet);
unsigned int impliedCount = FACTSET_COUNT(impliedSet);
if (*op == '+') while (rightCount) AddFact(impliedSet,factSet[rightSet][rightCount--]); // add set to set preserving order
else if (*op == '-') // remove from set
{
for (unsigned int i = 1; i <= rightCount; ++i) factSet[rightSet][i]->flags |= MARKED_FACT; // mark right facts
for (unsigned int i = 1; i <= impliedCount; ++i) // erase from the left side
{
F = factSet[impliedSet][i];
if (F->flags & MARKED_FACT)
{
memmove(&factSet[impliedSet][i],&factSet[impliedSet][i+1], (impliedCount - i)* sizeof(FACT*));
--impliedCount; // new end count
--i; // redo loop at this point
}
}
for (unsigned int i = 1; i <= rightCount; ++i) factSet[rightSet][i]->flags ^= MARKED_FACT; // erase marks
SET_FACTSET_COUNT(impliedSet,impliedCount);
}
else if (*op == '=') memmove(&factSet[impliedSet][0],&factSet[rightSet][0], (rightCount+1) * sizeof(FACT*)); // assigned from set
else result = FAILRULE_BIT;
}
else if (IsDigit(*buffer) || !*buffer) // fact index (or null fact) to set operators
{