17#ifndef QGSEXPRESSIONNODEIMPL_H
18#define QGSEXPRESSIONNODEIMPL_H
51 SIP_PYOBJECT __repr__();
53 QString
str = QStringLiteral(
"<QgsExpressionNodeUnaryOperator: %1>" ).arg( sipCpp->text() );
54 sipRes = PyUnicode_FromString(
str.toUtf8().constData() );
71 QString
dump()
const override;
76 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
92 static const
char *UNARY_OPERATOR_TEXT[];
147 , mOpRight( opRight )
152 SIP_PYOBJECT __repr__();
154 QString
str = QStringLiteral(
"<QgsExpressionNodeBinaryOperator: %1>" ).arg( sipCpp->text() );
155 sipRes = PyUnicode_FromString(
str.toUtf8().constData() );
179 QString
dump()
const override;
184 QList<const QgsExpressionNode *>
nodes( )
const override;
SIP_SKIP
193 int precedence() const;
198 bool leftAssociative() const;
204 QString text() const;
207 bool compare(
double diff );
208 qlonglong computeInt( qlonglong x, qlonglong y );
209 double computeDouble(
double x,
double y );
216 QDateTime computeDateTimeFromInterval( const QDateTime &d,
QgsInterval *i );
222 static const
char *BINARY_OPERATOR_TEXT[];
238 : mContainer( container )
258 QString
dump()
const override;
263 QList<const QgsExpressionNode *>
nodes( )
const override;
SIP_SKIP
290 , mLowerBound( nodeLowerBound )
291 , mHigherBound( nodeHigherBound )
306 QString
dump()
const override;
311 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
335 bool mNegate = false;
375 QString
dump()
const override;
380 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
408 SIP_PYOBJECT __repr__();
413 function = fd->name();
417 function = QString::number( sipCpp->fnIndex() );
420 QString
str = QStringLiteral(
"<QgsExpressionNodeFunction: %1>" ).arg( function );
421 sipRes = PyUnicode_FromString(
str.toUtf8().constData() );
438 QString
dump()
const override;
444 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
450 static
bool validateParams(
int fnIndex,
QgsExpressionNode::NodeList *args, QString &error );
454 NodeList *mArgs =
nullptr;
473 SIP_PYOBJECT __repr__();
475 QString
str = QStringLiteral(
"<QgsExpressionNodeLiteral: %1>" ).arg( sipCpp->valueAsString() );
476 sipRes = PyUnicode_FromString(
str.toUtf8().constData() );
481 inline QVariant
value()
const {
return mValue; }
486 QString
dump()
const override;
492 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
502 QString valueAsString() const;
526 SIP_PYOBJECT __repr__();
528 QString
str = QStringLiteral(
"<QgsExpressionNodeColumnRef: \"%1\">" ).arg( sipCpp->name() );
529 sipRes = PyUnicode_FromString(
str.toUtf8().constData() );
534 QString
name()
const {
return mName; }
539 QString
dump()
const override;
544 QList<const QgsExpressionNode *>
nodes( )
const override;
SIP_SKIP
619 : mConditions( conditions )
620 , mElseExp( elseExp )
628 QString
dump()
const override;
646 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
653 WhenThenList mConditions;
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
A abstract base class for defining QgsExpression functions.
SQL-like BETWEEN and NOT BETWEEN predicates.
QgsExpressionNode * node() const
Returns the expression node.
QgsExpressionNodeBetweenOperator(QgsExpressionNode *node, QgsExpressionNode *nodeLowerBound, QgsExpressionNode *nodeHigherBound, bool negate=false)
This node tests if the result of node is between the result of nodeLowerBound and nodeHigherBound nod...
A binary expression operator, which operates on two values.
QgsExpressionNode * opLeft() const
Returns the node to the left of the operator.
QgsExpressionNode * opRight() const
Returns the node to the right of the operator.
QgsExpressionNodeBinaryOperator::BinaryOperator op() const
Returns the binary operator.
QgsExpressionNodeBinaryOperator(QgsExpressionNodeBinaryOperator::BinaryOperator op, QgsExpressionNode *opLeft, QgsExpressionNode *opRight)
Binary combination of the left and the right with op.
~QgsExpressionNodeBinaryOperator() override
BinaryOperator
list of binary operators
An expression node which takes it value from a feature's field.
QgsExpressionNodeColumnRef(const QString &name)
Constructor for QgsExpressionNodeColumnRef, referencing the column with the specified name.
QString name() const
The name of the column.
Represents a "WHEN... THEN..." portation of a CASE WHEN clause in an expression.
WhenThen & operator=(const WhenThen &rh)=delete
WhenThen(const WhenThen &rh)=delete
QgsExpressionNode * thenExp() const
The expression node that makes the THEN result part of the condition.
An expression node for CASE WHEN clauses.
QgsExpressionNodeCondition(const QgsExpressionNodeCondition::WhenThenList &conditions, QgsExpressionNode *elseExp=nullptr)
Create a new node with the given list of conditions and an optional elseExp expression.
QList< QgsExpressionNodeCondition::WhenThen * > WhenThenList
QgsExpressionNode * elseExp() const
The ELSE expression used for the condition.
WhenThenList conditions() const
The list of WHEN THEN expression parts of the expression.
An expression node for expression functions.
int fnIndex() const
Returns the index of the node's function.
QgsExpressionNode::NodeList * args() const
Returns a list of arguments specified for the function.
An expression node for value IN or NOT IN clauses.
QgsExpressionNode * node() const
Returns the expression node.
QgsExpressionNodeInOperator(QgsExpressionNode *node, QgsExpressionNode::NodeList *list, bool notin=false)
This node tests if the result of node is in the result of list.
QgsExpressionNode::NodeList * list() const
Returns the list of nodes to search for matching values within.
bool isNotIn() const
Returns true if this node is a "NOT IN" operator, or false if the node is a normal "IN" operator.
A indexing expression operator, which allows use of square brackets [] to reference map and array ite...
QgsExpressionNodeIndexOperator(QgsExpressionNode *container, QgsExpressionNode *index)
Constructor for QgsExpressionNodeIndexOperator.
QgsExpressionNode * index() const
Returns the index node, representing an array element index or map key.
QgsExpressionNode * container() const
Returns the container node, representing an array or map value.
~QgsExpressionNodeIndexOperator() override
An expression node for literal values.
QVariant value() const
The value of the literal.
QgsExpressionNodeLiteral(const QVariant &value)
Constructor for QgsExpressionNodeLiteral, with the specified literal value.
A unary node is either negative as in boolean (not) or as in numbers (minus).
~QgsExpressionNodeUnaryOperator() override
QgsExpressionNodeUnaryOperator::UnaryOperator op() const
Returns the unary operator.
QgsExpressionNodeUnaryOperator(QgsExpressionNodeUnaryOperator::UnaryOperator op, QgsExpressionNode *operand)
A node unary operator is modifying the value of operand by negating it with op.
QgsExpressionNode * operand() const
Returns the node the operator will operate upon.
UnaryOperator
list of unary operators
A list of expression nodes.
Abstract base class for all nodes that can appear in an expression.
virtual QString dump() const =0
Dump this node into a serialized (part) of an expression.
virtual QgsExpressionNode * clone() const =0
Generate a clone of this node.
virtual QSet< QString > referencedColumns() const =0
Abstract virtual method which returns a list of columns required to evaluate this node.
virtual QgsExpressionNode::NodeType nodeType() const =0
Gets the type of this node.
virtual QSet< QString > referencedVariables() const =0
Returns a set of all variables which are used in this expression.
NodeType
Known node types.
virtual bool needsGeometry() const =0
Abstract virtual method which returns if the geometry is required to evaluate this expression.
virtual QList< const QgsExpressionNode * > nodes() const =0
Returns a list of all nodes which are used in this expression.
virtual QSet< QString > referencedFunctions() const =0
Returns a set of all functions which are used in this expression.
Class for parsing and evaluation of expressions (formerly called "search strings").
A representation of the interval between two datetime values.