17#ifndef QGSEXPRESSIONNODEIMPL_H
18#define QGSEXPRESSIONNODEIMPL_H
50 SIP_PYOBJECT __repr__();
52 QString str = QStringLiteral(
"<QgsExpressionNodeUnaryOperator: %1>" ).arg( sipCpp->text() );
53 sipRes = PyUnicode_FromString( str.toUtf8().constData() );
70 QString
dump()
const override;
75 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
97 std::unique_ptr<QgsExpressionNode> mOperand;
99 static const char *UNARY_OPERATOR_TEXT[];
154 , mOpRight( opRight )
158 SIP_PYOBJECT __repr__();
160 QString str = QStringLiteral(
"<QgsExpressionNodeBinaryOperator: %1>" ).arg( sipCpp->text() );
161 sipRes = PyUnicode_FromString( str.toUtf8().constData() );
185 QString
dump()
const override;
190 QList<const QgsExpressionNode *>
nodes( )
const override;
SIP_SKIP
199 int precedence() const;
204 bool leftAssociative() const;
210 QString text() const;
221 bool compare(
double diff );
222 qlonglong computeInt( qlonglong x, qlonglong y );
223 double computeDouble(
double x,
double y );
230 QDateTime computeDateTimeFromInterval(
const QDateTime &d,
QgsInterval *i );
233 std::unique_ptr<QgsExpressionNode> mOpLeft;
234 std::unique_ptr<QgsExpressionNode> mOpRight;
236 static const char *BINARY_OPERATOR_TEXT[];
252 : mContainer( container )
271 QString
dump()
const override;
276 QList<const QgsExpressionNode *>
nodes( )
const override;
SIP_SKIP
291 std::unique_ptr<QgsExpressionNode> mContainer;
292 std::unique_ptr<QgsExpressionNode> mIndex;
310 , mLowerBound( nodeLowerBound )
311 , mHigherBound( nodeHigherBound )
326 QString
dump()
const override;
331 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
361 std::unique_ptr<QgsExpressionNode> mNode;
362 std::unique_ptr<QgsExpressionNode> mLowerBound;
363 std::unique_ptr<QgsExpressionNode> mHigherBound;
364 bool mNegate =
false;
404 QString
dump()
const override;
409 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
423 std::unique_ptr<QgsExpressionNode> mNode;
424 std::unique_ptr<QgsExpressionNodeInOperator::NodeList> mList;
445 SIP_PYOBJECT __repr__();
450 function = fd->name();
454 function = QString::number( sipCpp->fnIndex() );
457 QString str = QStringLiteral(
"<QgsExpressionNodeFunction: %1>" ).arg( function );
458 sipRes = PyUnicode_FromString( str.toUtf8().constData() );
475 QString
dump()
const override;
481 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
487 static
bool validateParams(
int fnIndex,
QgsExpressionNode::NodeList *args, QString &error );
501 std::unique_ptr<NodeList> mArgs;
520 SIP_PYOBJECT __repr__();
522 QString str = QStringLiteral(
"<QgsExpressionNodeLiteral: %1>" ).arg( sipCpp->valueAsString() );
523 sipRes = PyUnicode_FromString( str.toUtf8().constData() );
528 inline QVariant
value()
const {
return mValue; }
533 QString
dump()
const override;
539 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
549 QString valueAsString() const;
573 SIP_PYOBJECT __repr__();
575 QString str = QStringLiteral(
"<QgsExpressionNodeColumnRef: \"%1\">" ).arg( sipCpp->name() );
576 sipRes = PyUnicode_FromString( str.toUtf8().constData() );
581 QString
name()
const {
return mName; }
586 QString
dump()
const override;
591 QList<const QgsExpressionNode *>
nodes( )
const override;
SIP_SKIP
650 std::unique_ptr<QgsExpressionNode> mWhenExp;
651 std::unique_ptr<QgsExpressionNode> mThenExp;
666 : mConditions( conditions )
667 , mElseExp( elseExp )
675 QString
dump()
const override;
693 QList<const QgsExpressionNode *>
nodes()
const override;
SIP_SKIP
709 WhenThenList mConditions;
710 std::unique_ptr<QgsExpressionNode> mElseExp;
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
An 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.
BinaryOperator
list of binary operators
An expression node which takes its 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.
An indexing expression operator, which allows use of square brackets [] to reference map and array it...
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.
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::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.
Handles parsing and evaluation of expressions (formerly called "search strings").
A representation of the interval between two datetime values.