Class StringOps :: ConcatenationNode

A data flow node that performs a string concatenation or occurs as an operand in a string concatenation.

For example, the expression x + y + z contains the following concatenation nodes:

The leaf nodes x, y, and z
The intermediate node x + y, which is both a concatenation and an operand
The root node x + y + z

Note that the following are not recognized a string concatenations:

Array join() calls with a non-empty separator
Tagged template literals

Also note that all + operators are seen as string concatenations, even in cases where it is used for arithmetic.

Examples of string concatenations:

x + y
x += y
[x, y].join('')
Array(x, y).join('')
`Hello, ${message}`

Import path


                                import javascript

Direct supertypes

Node

Indirect supertypes

TNode

Known direct subtypes

Predicates

getAnOperand	Gets an operand of this string concatenation.
getFirstLeaf	Gets the first leaf in this concatenation tree.
getFirstOperand	Gets the first operand of this string concatenation.
getLastLeaf	Gets the last leaf in this concatenation tree.
getLastOperand	Gets the last operand of this string concatenation
getNextLeaf	Gets the leaf that is occurs immediately after this leaf in the concatenation tree, if any.
getNumOperand	Gets the number of operands of this string concatenation.
getOperand	Gets the `n`th operand of this string concatenation.
getParentConcatenation	Gets the enclosing concatenation in which this is an operand, if any.
getPreviousLeaf	Gets the leaf that is occurs immediately before this leaf in the concatenation tree, if any.
getRoot	Gets the root of the concatenation tree in which this is an operator.
isCoercion	Holds if this only acts as a string coercion, such as `"" + x`.
isLeaf	Holds if this is a leaf in the concatenation tree, that is, it is not itself a concatenation.
isRoot	Holds if this is the root of a concatenation tree, that is, it is a concatenation operator that is not itself the immediate operand to another concatenation operator.

Inherited predicates

accessesGlobal	Holds if this data flow node accesses the global variable `g`, either directly or through the `window` object.	from Node
analyze	Gets type inference results for this data flow node.	from Node
asExpr	Gets the expression corresponding to this data flow node, if any.	from Node
getABoundFunctionValue	Gets a function value that may reach this node, possibly derived from a partial function invocation.	from Node
getAFunctionValue	Gets a function value that may reach this node.	from Node
getAFunctionValue	Gets a function value that may reach this node with the given `imprecision` level.	from Node
getALocalSource	Gets a source node from which data may flow to this node in zero or more local steps.	from Node
getAPredecessor	Gets a data flow node from which data may flow to this node in one local step.	from Node
getASuccessor	Gets a data flow node to which data may flow from this node in one local step.	from Node
getAstNode	Gets the AST node corresponding to this data flow node, if any.	from Node
getBasicBlock	Gets the basic block to which this node belongs.	from Node
getContainer	Gets the container in which this node occurs.	from Node
getEnclosingExpr	Gets the expression enclosing this data flow node. In most cases the result is the same as `asExpr()`, however this method additionally includes the `InvokeExpr` corresponding to reflective calls.	from Node
getEndColumn	Gets the end column of this data flow node.	from Node
getEndLine	Gets the end line of this data flow node.	from Node
getFile	Gets the file this data flow node comes from.	from Node
getImmediatePredecessor	Gets the immediate predecessor of this node, if any.	from Node
getIntValue	Gets the integer value of this node, if it is an integer constant.	from Node
getStartColumn	Gets the start column of this data flow node.	from Node
getStartLine	Gets the start line of this data flow node.	from Node
getStringValue	Gets the string value of this node, if it is a string literal or constant string concatenation.	from Node
getTopLevel	Gets the toplevel in which this node occurs.	from Node
hasLocationInfo	Holds if this element is at the specified location. The location spans column `startcolumn` of line `startline` to column `endcolumn` of line `endline` in file `filepath`. For more information, see Locations.	from Node
hasUnderlyingType	Holds if this node is annotated with the given named type, or is declared as a subtype thereof, or is a union or intersection containing such a type.	from Node
hasUnderlyingType	Holds if this node is annotated with the given named type, or is declared as a subtype thereof, or is a union or intersection containing such a type.	from Node
isIncomplete	Holds if the flow information for this node is incomplete.	from Node
mayHaveBooleanValue	Holds if this node may evaluate to the Boolean value `b`.	from Node
mayHaveStringValue	Holds if this node may evaluate to the string `s`, possibly through local data flow.	from Node
mayReferToParameter	DEPRECATED: Use `DataFlow::ParameterNode::flowsTo()` instead. Holds if this expression may refer to the initial value of parameter `p`.	from Node
toString	Gets a textual representation of this element.	from Node

Charpred

ConcatenationNode