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hqlgram2.cpp
11297 lines (10067 loc) · 382 KB
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hqlgram2.cpp
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/*##############################################################################
Copyright (C) 2011 HPCC Systems.
All rights reserved. This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
############################################################################## */
#include "platform.h"
#include <stdio.h>
#include <stdlib.h>
#include "hql.hpp"
#include "jlib.hpp"
#include "jmisc.hpp"
#include "jexcept.hpp"
#include "hqlerrors.hpp"
#include "jfile.hpp"
#include "junicode.hpp"
#include "hqlgram.hpp"
#include "hqlgram.h"
#include "hqlgram.hpp"
#include "hqlfold.hpp"
#include "hqlpmap.hpp"
#include "eclrtl.hpp"
#include "hqlerrors.hpp"
#include "hqlexpr.ipp"
#include "hqlattr.hpp"
#include "hqlmeta.hpp"
#include "hqlerror.hpp"
#include "hqlplugins.hpp"
#include "hqlscope.hpp"
#include "hqlthql.hpp"
#include "hqlpregex.hpp"
#include "hqlutil.hpp"
#include "hqltrans.ipp"
#include "hqlvalid.hpp"
#include "hqlrepository.hpp"
#define FAST_FIND_FIELD
//#define USE_WHEN_FOR_SIDEEFFECTS
#define MANYFIELDS_THRESHOLD 2000
#define MAX_SENSIBLE_FIELD_LENGTH 1000000000
struct TokenMap
{
int lexToken;
int attrToken;
};
static int defaultTokenMap[YY_LAST_TOKEN];
static int attributeToTokenMap[YY_LAST_TOKEN];
static TokenMap * nestedAttributeMap[YY_LAST_TOKEN];
static IHqlExpression * alreadyAssignedNestedTag;
//Called if token is only ever used as an attribute
static void setAttribute(int attrToken)
{
defaultTokenMap[attrToken] = 0;
attributeToTokenMap[attrToken] = attrToken;
}
static void setKeyword(int attrToken)
{
attributeToTokenMap[attrToken] = attrToken;
}
//called if the attribute is clashes with another reserved word
static void setAttribute(int attrToken, int lexToken)
{
attributeToTokenMap[attrToken] = lexToken;
}
static void setAttributes(int lexToken, ...)
{
unsigned numAttrs = 0;
va_list args;
va_start(args, lexToken);
for (;;)
{
int attrToken = va_arg(args, int);
if (!attrToken)
break;
numAttrs++;
}
va_end(args);
assertex(numAttrs);
TokenMap * map = new TokenMap[numAttrs+1];
unsigned curAttr = 0;
va_list args2;
va_start(args2, lexToken);
for (;;)
{
int attrToken = va_arg(args2, int);
if (!attrToken)
break;
int lexToken = attributeToTokenMap[attrToken];
assertex(lexToken);
map[curAttr].lexToken = lexToken;
map[curAttr].attrToken = attrToken;
curAttr++;
}
va_end(args2);
assertex(curAttr == numAttrs);
map[curAttr].lexToken = 0;
map[curAttr].attrToken = 0;
nestedAttributeMap[lexToken] = map;
}
/*
Why dynamically map keywords? There are several different reasons:
a) If an attribute has a different syntax from the non attribute form of the keyword then dynamically mapping the keyword can allow the
grammar to disambiguate between the two.
b) If a keyword is only used as an attribute name then it allows us to only pollute the name space when that attribute would be valid.
c) If attributes have different forms in different places then using different mapped attributes can allow us to use a single shared
production with all the possible attributes.
(a) Is required in a couple of cases at the moment, there may be other situations in the future.
(b) Generally this is implemented by looking ahead in the parser tables. FORMAT_ATTR is an example that is handled this way.
(c) Unlikely to ever come to anything...
*/
MODULE_INIT(INIT_PRIORITY_STANDARD)
{
for (unsigned i=0; i < YY_LAST_TOKEN; i++)
defaultTokenMap[i] = i;
setAttribute(FORMAT_ATTR);
setAttribute(MERGE_ATTR, MERGE);
setAttribute(PARTITION_ATTR, PARTITION);
setAttributes(DISTRIBUTE, MERGE_ATTR, PARTITION_ATTR, 0);
setAttributes(HEADING, FORMAT_ATTR, 0);
alreadyAssignedNestedTag = createAttribute(_alreadyAssignedNestedTag_Atom);
return true;
}
MODULE_EXIT()
{
::Release(alreadyAssignedNestedTag);
for (unsigned i=0; i < YY_LAST_TOKEN; i++)
delete [] nestedAttributeMap[i];
}
// An experiment in programming style.
template <class T>
class RestoreValueBlock
{
public:
inline RestoreValueBlock(T & _variable) : variable(_variable), oldValue(_variable) {}
inline RestoreValueBlock(T & _variable, const T newValue) : variable(_variable), oldValue(_variable) { _variable = newValue; }
inline ~RestoreValueBlock() { variable = oldValue; }
protected:
T & variable;
const T oldValue;
};
/* This enables warning on a assignall which tries to reassign a field. */
//#define _WARN_ON_ASSIGNALL
void attribute::annotateExprWithLocation()
{
if ((atr_type==t_expr) && expr && !queryLocation(expr))
expr = createLocationAnnotation(expr, pos);
}
bool attribute::isZero() const
{
IValue * value = queryExpr()->queryValue();
return (value && (value->getIntValue() == 0));
}
void attribute::setPosition(int _line, int _column, int _position, ISourcePath * _sourcePath)
{
pos.set(_line, _column, _position, _sourcePath);
if ((atr_type==t_expr) && expr)
{
if (okToAddLocation(expr) && !queryLocation(expr))
expr = createLocationAnnotation(expr, pos);
}
}
IHqlExpression * ActiveScopeInfo::createDefaults()
{
ForEachItemIn(i, activeDefaults)
{
if (activeDefaults.item(i).getOperator() != no_omitted)
return createValueSafe(no_sortlist, makeSortListType(NULL), activeDefaults);
}
return NULL;
}
IHqlExpression * ActiveScopeInfo::createFormals(bool oldSetFormat)
{
assertex(isParametered);
if (oldSetFormat)
{
ForEachItemIn(i, activeParameters)
{
IHqlExpression & cur = activeParameters.item(i);
assertex(cur.getOperator() == no_param);
ITypeInfo * type = cur.queryType();
if (type->getTypeCode() == type_set)
{
Owned<ITypeInfo> newType = makeAttributeModifier(LINK(type), createAttribute(oldSetFormatAtom));
HqlExprArray args;
unwindChildren(args, &cur);
activeParameters.replace(*createParameter(cur.queryName(), (unsigned)cur.querySequenceExtra(), newType.getClear(), args), i);
}
}
}
return createValueSafe(no_sortlist, makeSortListType(NULL), activeParameters);
}
void ActiveScopeInfo::newPrivateScope()
{
if (localScope)
privateScope.setown(createPrivateScope(localScope));
}
IHqlExpression * ActiveScopeInfo::queryParameter(_ATOM name)
{
ForEachItemIn(idx, activeParameters)
{
IHqlExpression &parm = activeParameters.item(idx);
if (parm.queryName()==name)
return &parm;
}
return NULL;
}
bool HqlGramCtx::hasAnyActiveParameters()
{
ForEachItemIn(i2, defineScopes)
{
if (defineScopes.item(i2).activeParameters.ordinality())
return true;
}
return false;
}
void HqlGram::gatherActiveParameters(HqlExprCopyArray & target)
{
ForEachItemIn(i2, defineScopes)
{
appendArray(target, defineScopes.item(i2).activeParameters);
}
}
/* In parm: scope not linked */
HqlGram::HqlGram(IHqlScope * _globalScope, IHqlScope * _containerScope, IFileContents * _text, HqlLookupContext & _ctx, IXmlScope *xmlScope, bool _hasFieldMap, bool loadImplicit)
: lookupCtx(_ctx)
{
parseConstantText = false;
init(_globalScope, _containerScope);
fieldMapUsed = _hasFieldMap;
if (!lookupCtx.functionCache)
lookupCtx.functionCache = &localFunctionCache;
errorHandler = lookupCtx.errs;
sourcePath.set(_text->querySourcePath());
moduleName = _containerScope->queryName();
forceResult = false;
lexObject = new HqlLex(this, _text, xmlScope, NULL);
if(lookupCtx.queryRepository() && loadImplicit && legacyEclSemantics)
{
HqlScopeArray scopes;
getImplicitScopes(scopes, lookupCtx.queryRepository(), _containerScope, lookupCtx);
ForEachItemIn(i, scopes)
defaultScopes.append(OLINK(scopes.item(i)));
}
}
HqlGram::HqlGram(HqlGramCtx & parent, IHqlScope * _containerScope, IFileContents * _text, IXmlScope *xmlScope, bool _parseConstantText)
: lookupCtx(parent.lookupCtx)
{
//This is used for parsing a constant expression inside the preprocessor
//And reprocessing FORWARD module definitions.
ForEachItemIn(i2, parent.defineScopes)
defineScopes.append(OLINK(parent.defineScopes.item(i2)));
init(parent.globalScope, _containerScope);
for (unsigned i=0;i<parent.defaultScopes.length();i++)
defaultScopes.append(*LINK(&parent.defaultScopes.item(i)));
sourcePath.set(parent.sourcePath);
errorHandler = lookupCtx.errs;
moduleName = containerScope->queryName();
ForEachItemIn(i3, parent.imports)
parseScope->defineSymbol(LINK(&parent.imports.item(i3)));
//Clone parseScope
lexObject = new HqlLex(this, _text, xmlScope, NULL);
forceResult = true;
parseConstantText = _parseConstantText;
}
void HqlGram::saveContext(HqlGramCtx & ctx, bool cloneScopes)
{
ForEachItemIn(i2, defineScopes)
{
ActiveScopeInfo & cur = defineScopes.item(i2);
if (cloneScopes)
{
//parameters will be cleared as the rest of the file is parsed => need to preserve
ActiveScopeInfo & clone = * new ActiveScopeInfo;
clone.localScope.set(cur.localScope);
clone.privateScope.set(cur.privateScope);
clone.isParametered = cur.isParametered;
appendArray(clone.activeParameters, cur.activeParameters);
appendArray(clone.activeDefaults, cur.activeDefaults);
ctx.defineScopes.append(clone);
}
else
ctx.defineScopes.append(OLINK(cur));
}
ctx.globalScope.set(globalScope);
appendArray(ctx.defaultScopes, defaultScopes);
ctx.sourcePath.set(sourcePath);
parseScope->getSymbols(ctx.imports);
};
IHqlScope * HqlGram::queryGlobalScope()
{
return globalScope;
}
void HqlGram::init(IHqlScope * _globalScope, IHqlScope * _containerScope)
{
minimumScopeIndex = 0;
isQuery = false;
legacyEclSemantics = queryLegacyEclSemantics();
current_id = NULL;
lexObject = NULL;
expectedAttribute = NULL;
pendingAttributes = NULL;
outerScopeAccessDepth = 0;
inType = false;
aborting = false;
errorHandler = NULL;
moduleName = NULL;
resolveSymbols = true;
lastpos = 0;
containerScope = _containerScope;
globalScope = _globalScope;
parseScope.setown(createPrivateScope(_containerScope));
transformScope = NULL;
if (globalScope->queryName() && legacyEclSemantics)
parseScope->defineSymbol(globalScope->queryName(), NULL, LINK(queryExpression(globalScope)), false, false, ob_import);
boolType = makeBoolType();
defaultIntegralType = makeIntType(8, true);
uint4Type = makeIntType(4, false);
defaultRealType = makeRealType(DEFAULT_REAL_SIZE);
current_type = NULL;
curTransform = NULL;
insideEvaluate = false;
fieldMapUsed = false;
associateWarnings = true;
errorDisabled = false;
setIdUnknown(false);
m_maxErrorsAllowed = DEFAULT_MAX_ERRORS;
sortDepth = 0;
serviceScope.clear();
selfUsedOnRhs = false;
if (globalScope->isPlugin())
{
StringBuffer plugin, version;
globalScope->getProp(pluginAtom, plugin);
globalScope->getProp(versionAtom, version);
serviceExtraAttributes.setown(createAttribute(pluginAtom, createConstant(plugin.str()), createConstant(version.str())));
}
}
HqlGram::~HqlGram()
{
errorHandler = NULL;
delete lexObject;
boolType->Release();
defaultIntegralType->Release();
uint4Type->Release();
defaultRealType->Release();
cleanCurTransform();
}
int HqlGram::yyLex(attribute * yylval, const short * activeState)
{
if (aborting) return 0;
return lexObject->yyLex(*yylval, resolveSymbols, activeState);
}
void HqlGram::cleanCurTransform()
{
attribute pseudoErrPos;
loop
{
IHqlExpression * ret = endTransform(pseudoErrPos);
if (!ret)
break;
ret->Release();
}
}
void HqlGram::pushTopScope(IHqlExpression *newScope)
{
newScope->Link();
topScopes.append(*newScope);
wasInEvaluate.append(insideEvaluate);
insideEvaluate = false;
}
void HqlGram::pushLeftScope(IHqlExpression *newScope)
{
newScope->Link();
leftScopes.append(*newScope);
}
void HqlGram::pushRightScope(IHqlExpression *newScope)
{
newScope->Link();
rightScopes.append(*newScope);
}
void HqlGram::pushRowsScope(IHqlExpression *newScope)
{
newScope->Link();
rowsScopes.append(*newScope);
rowsIds.append(*createUniqueRowsId());
}
/* in: linked */
void HqlGram::pushSelfScope(IHqlExpression *newScope)
{
selfScopes.append(*newScope);
}
void HqlGram::pushSelfScope(ITypeInfo * selfType)
{
IHqlExpression * record = queryExpression(selfType);
pushSelfScope(createSelector(no_self, record, NULL));
}
void HqlGram::popTopScope()
{
if(topScopes.length() > 0)
{
topScopes.pop();
insideEvaluate = wasInEvaluate.pop();
}
}
void HqlGram::popLeftScope()
{
if(leftScopes.length() > 0)
leftScopes.pop();
}
void HqlGram::popRightScope()
{
if(rightScopes.length() > 0)
rightScopes.pop();
}
IHqlExpression * HqlGram::popRowsScope()
{
if(rowsScopes.length() > 0)
{
rowsScopes.pop();
return &rowsIds.popGet();
}
return createAttribute(_rowsid_Atom, createConstant(0));
}
void HqlGram::popSelfScope()
{
if(selfScopes.length() > 0)
selfScopes.pop();
}
void HqlGram::swapTopScopeForLeftScope()
{
assertex(topScopes.ordinality() > 0);
leftScopes.append(topScopes.popGet());
}
IHqlExpression * HqlGram::getSelectorSequence()
{
if (activeSelectorSequences.ordinality())
return LINK(&activeSelectorSequences.tos());
//Can occur when LEFT is used in an invalid context
return createDummySelectorSequence();
}
void HqlGram::pushLocale(IHqlExpression *newLocale)
{
localeStack.append(*newLocale);
}
void HqlGram::popLocale()
{
if(localeStack.length() > 0)
localeStack.pop();
}
IHqlExpression * HqlGram::queryDefaultLocale()
{
if(localeStack.length() == 0)
return NULL;
return &localeStack.tos();
}
void HqlGram::pushRecord(IHqlExpression *newRecord)
{
activeRecords.append(*newRecord);
}
IHqlExpression* HqlGram::popRecord()
{
return &activeRecords.pop();
}
void HqlGram::beginFunctionCall(attribute & function)
{
IHqlExpression * funcdef = function.queryExpr();
//Check for strange situation where this isn't really a function (e.g., an alien type)
//but the grammar allows optional parameters - so need a record on the stack
if (!funcdef->isFunction())
funcdef = NULL;
activeFunctionCalls.append(*new FunctionCallInfo(funcdef));
}
void HqlGram::addActual(const attribute & errpos, IHqlExpression * ownedExpr)
{
assertex(ownedExpr);
FunctionCallInfo & call = activeFunctionCalls.tos();
OwnedHqlExpr releaseExpr = ownedExpr;
processParameter(call, NULL, ownedExpr, errpos);
// call.actuals.append(*LINK(ownedExpr));
}
void HqlGram::addNamedActual(const attribute & errpos, _ATOM name, IHqlExpression * ownedExpr)
{
assertex(ownedExpr);
FunctionCallInfo & call = activeFunctionCalls.tos();
OwnedHqlExpr releaseExpr = ownedExpr;
processParameter(call, name, ownedExpr, errpos);
// IHqlExpression * named = createValue(no_namedactual, makeVoidType(), createAttribute(name), ownedExpr);
// call.actuals.append(*named);
}
IHqlExpression * HqlGram::endFunctionCall()
{
FunctionCallInfo & call = activeFunctionCalls.tos();
leaveActualTopScope(call);
OwnedHqlExpr ret = call.getFinalActuals();
activeFunctionCalls.pop();
return ret.getClear();
}
IHqlExpression * HqlGram::createUniqueId()
{
HqlExprArray args;
ForEachItemIn(i, defineScopes)
{
ActiveScopeInfo & curScope = defineScopes.item(i);
appendArray(args, curScope.activeParameters);
}
if (args.ordinality())
{
args.add(*::createUniqueId(), 0);
return createExprAttribute(_uid_Atom, args);
}
return ::createUniqueId();
}
IHqlExpression * HqlGram::doCreateUniqueSelectorSequence()
{
HqlExprArray args;
ForEachItemIn(i, defineScopes)
{
ActiveScopeInfo & curScope = defineScopes.item(i);
appendArray(args, curScope.activeParameters);
}
if (args.ordinality())
{
args.add(*createUniqueId(), 0);
return createAttribute(_selectorSequence_Atom, args);
}
return ::createUniqueSelectorSequence();
}
IHqlExpression * HqlGram::createActiveSelectorSequence(IHqlExpression * left, IHqlExpression * right)
{
#ifdef USE_SELSEQ_UID
if (left || right)
{
HqlExprArray args;
if (left) args.append(*LINK(left->queryNormalizedSelector()));
if (right) args.append(*LINK(right->queryNormalizedSelector()));
return createAttribute(_selectorSequence_Atom, args);
}
return ::createUniqueSelectorSequence();
return doCreateUniqueSelectorSequence();
#else
return createSelectorSequence();
#endif
}
void HqlGram::pushSelectorSequence(IHqlExpression * ds1, IHqlExpression * ds2)
{
IHqlExpression * selSeq = createActiveSelectorSequence(ds1, ds2);
activeSelectorSequences.append(*selSeq);
}
void HqlGram::pushUniqueSelectorSequence()
{
IHqlExpression * selSeq = ::createUniqueSelectorSequence();
activeSelectorSequences.append(*selSeq);
}
IHqlExpression * HqlGram::popSelectorSequence()
{
if (activeSelectorSequences.ordinality())
return &activeSelectorSequences.popGet();
else
return createDummySelectorSequence();
}
void HqlGram::beginList()
{
if (curList)
curListStack.append(*curList.getClear());
curList.setown(createOpenValue(no_comma, makeNullType()));
}
void HqlGram::addListElement(IHqlExpression * expr)
{
if (expr)
curList->addOperand(expr);
}
void HqlGram::endList(HqlExprArray & args)
{
OwnedHqlExpr list = curList.getClear()->closeExpr();
if (curListStack.ordinality())
curList.setown(&curListStack.popGet());
unwindChildren(args, list);
}
IHqlExpression * HqlGram::getActiveCounter(attribute & errpos)
{
OwnedHqlExpr tempCounter;
OwnedHqlExpr * ref;
if (counterStack.empty())
{
reportError(ERR_COUNT_ILL_HERE, errpos, "COUNTER not valid in this context");
ref = &tempCounter;
}
else
ref = &counterStack.tos().value;
if (!ref->get())
ref->setown(createCounter());
return LINK(*ref);
}
static StringBuffer& getFldName(IHqlExpression* field, StringBuffer& s)
{
switch (field->getOperator())
{
case no_select:
getFldName(field->queryChild(0), s).append(".");
getFldName(field->queryChild(1), s);
break;
case no_field:
default:
s.append(field->queryName()->str());
break;
case no_self:
case no_left:
case no_right:
case no_top:
case no_activetable:
s.append(getOpString(field->getOperator()));
break;
}
return s;
}
IHqlExpression * HqlGram::translateFieldsToNewScope(IHqlExpression * expr, IHqlSimpleScope * record, const attribute & err)
{
switch (expr->getOperator())
{
case no_field:
return record->lookupSymbol(expr->queryName());
case no_select:
{
OwnedHqlExpr newDs = translateFieldsToNewScope(expr->queryChild(0), record, err);
IHqlExpression * lhsRecord = newDs->queryRecord();
OwnedHqlExpr newField;
_ATOM name = expr->queryChild(1)->queryName();
if (lhsRecord)
newField.setown(lhsRecord->querySimpleScope()->lookupSymbol(name));
if (!newField)
newField.setown(record->lookupSymbol(name));
if (!newField)
{
reportError(ERR_FIELD_NOT_FOUND, err, "Could not find field %s", name->str());
return LINK(expr);
}
return createSelectExpr(newDs.getClear(), newField.getClear());
}
}
bool same = true;
HqlExprArray args;
ForEachChild(idx, expr)
{
IHqlExpression * cur = expr->queryChild(idx);
IHqlExpression * updated = translateFieldsToNewScope(cur, record, err);
if (cur != updated)
same = false;
args.append(*updated);
}
if (same)
return LINK(expr);
return expr->clone(args);
}
DefineIdSt * HqlGram::createDefineId(int scope, ITypeInfo * ownedType)
{
DefineIdSt* defineid = new DefineIdSt();
defineid->scope = scope;
defineid->setType(ownedType);
defineid->id = current_id;
defineid->setDoc(lexObject->getClearJavadoc());
return defineid;
}
void HqlGram::beginAlienType(const attribute & errpos)
{
if (inType)
reportError(ERR_USRTYPE_NESTEDDECL, errpos, "Cannot nest TYPE declarations");
inType = true;
enterType(errpos, queryParametered());
}
void HqlGram::beginDefineId(_ATOM name, ITypeInfo * type)
{
current_id = name;
current_type = type;
}
IHqlExpression * HqlGram::processAlienType(const attribute & errpos)
{
IHqlScope * alienScope = NULL;
ActiveScopeInfo & cur = defineScopes.tos();
if (checkAlienTypeDef(cur.localScope, errpos))
alienScope = LINK(cur.localScope);
leaveType(errpos);
if (alienScope)
return (createAlienType(current_id, closeScope(alienScope)))->closeExpr();
return createConstant(false);
}
IHqlExpression * HqlGram::processCompoundFunction(attribute & resultAttr, bool outOfLine)
{
OwnedHqlExpr resultExpr = resultAttr.getExpr();
OwnedHqlExpr expr = associateSideEffects(resultExpr, resultAttr.pos);
leaveScope(resultAttr);
leaveCompoundObject();
return expr.getClear();
}
IHqlExpression * HqlGram::convertToOutOfLineFunction(const ECLlocation & errpos, IHqlExpression * expr)
{
if (expr->getOperator() != no_outofline)
{
if (queryParametered())
{
OwnedHqlExpr mapped = convertWorkflowToImplicitParmeters(defineScopes.tos().activeParameters, defineScopes.tos().activeDefaults, expr);
if (containsWorkflow(mapped))
{
reportError(ERR_USER_FUNC_NO_WORKFLOW, errpos, "Out of line user functions cannot contain workflow/stored");
return mapped.getClear();
}
return createWrapper(no_outofline, mapped.getClear());
}
}
return LINK(expr);
}
IHqlExpression * HqlGram::processCppBody(const attribute & errpos, IHqlExpression * cpp)
{
HqlExprArray args;
cpp->unwindList(args, no_comma);
Linked<ITypeInfo> type = current_type;
if (!type)
type.setown(makeVoidType());
IHqlExpression * record = queryOriginalRecord(type);
OwnedHqlExpr result;
if (record)
{
args.add(*LINK(record),1);
if (hasLinkCountedModifier(type))
args.append(*getLinkCountedAttr());
if (hasStreamedModifier(type))
args.append(*getStreamedAttr());
switch (type->getTypeCode())
{
case type_row:
case type_record:
result.setown(createRow(no_cppbody, args));
break;
case type_table:
case type_groupedtable:
result.setown(createDataset(no_cppbody, args));
break;
case type_transform:
result.setown(createValue(no_cppbody, makeTransformType(LINK(record->queryType())), args));
break;
default:
throwUnexpected();
}
}
else
result.setown(createValue(no_cppbody, LINK(type), args));
result.setown(createLocationAnnotation(result.getClear(), errpos.pos));
if (queryParametered())
return createWrapper(no_outofline, result.getClear());
return result.getClear();
}
IHqlExpression * HqlGram::processUserAggregate(const attribute & mainPos, attribute & dsAttr, attribute & recordAttr, attribute & transformAttr, attribute * mergeAttr,
attribute *itemsAttr, attribute &rowsAttr, attribute &seqAttr)
{
HqlExprArray sortItems;
endList(sortItems);
OwnedHqlExpr dataset = dsAttr.getExpr();
OwnedHqlExpr record = recordAttr.getExpr();
OwnedHqlExpr transform = transformAttr.getExpr();
OwnedHqlExpr merge = mergeAttr ? mergeAttr->getExpr() : NULL;
OwnedHqlExpr rowsid = rowsAttr.getExpr();
OwnedHqlExpr selSeq = seqAttr.getExpr();
//check the record match
OwnedHqlExpr attrs;
OwnedHqlExpr grouping = itemsAttr ? processSortList(*itemsAttr, no_aggregate, dataset, sortItems, NULL, &attrs) : NULL;
if (grouping && (dataset->getOperator() == no_group) && isGrouped(dataset))
reportWarning(WRN_GROUPINGIGNORED, dsAttr.pos, "Grouping of aggregate input will have no effect, was this intended?");
HqlExprArray args;
args.append(*LINK(dataset));
args.append(*LINK(record));
args.append(*LINK(transform));
if (grouping)
args.append(*LINK(grouping));
if (merge)
args.append(*createExprAttribute(mergeTransformAtom, merge.getClear()));
if (attrs)
attrs->unwindList(args, no_comma);
args.append(*LINK(rowsid));
args.append(*LINK(selSeq));
OwnedHqlExpr ret = createDataset(no_aggregate, args);
checkAggregateRecords(ret, record, transformAttr);
return ret.getClear();
}
IHqlExpression * HqlGram::processIndexBuild(attribute & indexAttr, attribute * recordAttr, attribute * payloadAttr, attribute & filenameAttr, attribute & flagsAttr)
{
if (!recordAttr)
warnIfRecordPacked(indexAttr);
transferOptions(filenameAttr, flagsAttr);
normalizeExpression(filenameAttr, type_string, false);
OwnedHqlExpr dataset = indexAttr.getExpr();
checkBuildIndexFilenameFlags(dataset, flagsAttr);
LinkedHqlExpr inputDataset = dataset;
OwnedHqlExpr flags = flagsAttr.getExpr();
if (recordAttr)
{
OwnedHqlExpr record = recordAttr->getExpr();
if (payloadAttr)
{
OwnedHqlExpr payload = payloadAttr->getExpr();
checkIndexRecordType(record, 0, false, *recordAttr);
checkIndexRecordType(payload, payload->numChildren(), false, *payloadAttr);
modifyIndexPayloadRecord(record, payload, flags, indexAttr);
}
else
{
checkIndexRecordType(record, 1, false, *recordAttr);
}
record.setown(checkBuildIndexRecord(record.getClear(), *recordAttr));
record.setown(checkIndexRecord(record, *recordAttr));
inputDataset.setown(createDatasetF(no_selectfields, LINK(dataset), LINK(record), NULL));
warnIfRecordPacked(inputDataset, *recordAttr);
}
else
{
checkIndexRecordType(dataset->queryRecord(), 1, false, indexAttr);
}
HqlExprArray args;
args.append(*LINK(inputDataset));
args.append(*filenameAttr.getExpr());
if (flags)
flags->unwindList(args, no_comma);
checkDistributer(flagsAttr, args);
return createValue(no_buildindex, makeVoidType(), args);
}
void HqlGram::processError(bool full)
{
releaseScopes();
sortDepth = 0;
if (full)
{
resetParameters();
current_id = NULL;
current_type = NULL;
}
}
void HqlGram::processEnum(attribute & idAttr, IHqlExpression * value)
{
if (value)
lastEnumValue.setown(ensureExprType(value, curEnumType));
else
lastEnumValue.setown(nextEnumValue());
DefineIdSt * id = new DefineIdSt;
id->id = idAttr.getName();
id->scope = EXPORT_FLAG;
doDefineSymbol(id, LINK(lastEnumValue), NULL, idAttr, idAttr.pos.position, idAttr.pos.position, false);
}
bool HqlGram::extractConstantString(StringBuffer & text, attribute & attr)
{
normalizeExpression(attr, type_string, true);
OwnedHqlExpr str = attr.getExpr();
if (!str->queryValue())
{
reportError(999, attr, "Const-foldable string expression expected");
return false;
}