Class ControlFlow::Node

A node in the control-flow graph of a Go file or function.

Nodes correspond to expressions and statements that compute a value or perform an operation (as opposed to providing syntactic structure or type information).

There are also synthetic entry and exit nodes for each Go file or function that mark the beginning and the end, respectively, of its execution.

Import path

import semmle.go.controlflow.ControlFlowGraph

Direct supertypes

ControlFlowNode

Indirect supertypes

Known direct subtypes

Predicates

dominatesNode	Holds if this node dominates `dominee` in the control-flow graph.
getFile	Gets the file to which this node belongs.
getRoot	Gets the innermost function to which this node belongs, or the file if it is not inside a function.
hasLocationInfo	DEPRECATED: Use `getLocation()` instead.
isBranch	Holds if this is a node with more than one successor.
isEntryNode	Holds if this node is the unique entry node of a file or function.
isExitNode	Holds if this node is the unique exit node of a file or function.
isFirstNodeOf	Holds if this is the first control-flow node in `subtree`.
isJoin	Holds if this is a node with more than one predecessor.

Inherited predicates

asExpr	Gets the expression this control flow node uniquely represents, if any.	from NodeImpl
asStmt	Gets the statement this control flow node uniquely represents, if any.	from NodeImpl
dominates	Holds if this node dominates `that` node.	from ControlFlowNode
getANormalSuccessor	Gets a normal successor of this node, if any. This includes direct successors and conditional successors.	from ControlFlowNode
getAPredecessor	Gets an immediate predecessor of this node, if this is not an `EntryNode`.	from ControlFlowNode
getASuccessor	Gets an immediate successor of this node, if this is not an `ExitNode`.	from ControlFlowNode
getASuccessor	Gets an immediate successor of a given type, if any.	from ControlFlowNode
getAnExceptionSuccessor	Gets an exception successor of this node, if any.	from ControlFlowNode
getAstNode	Gets the AST node with which this control flow node is associated. Note that several control flow nodes are usually associated with the same AST node, but each control flow node is associated with a unique AST node.	from NodeImpl
getBasicBlock	Gets the basic block containing this control flow node.	from ControlFlowNode
getEnclosingCallable	Gets the enclosing callable of this control flow node.	from NodeImpl
getIdTag	INTERNAL: Do not use.	from NodeImpl
getLocation	Gets the source location for this node.	from NodeImpl
injects	Holds if this is the unique control flow node that represents the given AST node.	from NodeImpl
isAdditional	Holds if this is an additional control flow node with the given tag for the given AST node.	from NodeImpl
isAfter	Holds if this is a node representing the point in the control flow after the normal termination of `n`. For simple leaf nodes, this is merged with the “before” node and is hence equal to it. For nodes in conditional contexts, this may be one of two possible “after” nodes representing the different possible values of `n`.	from NodeImpl
isAfterFalse	Holds if this node indicates that `n` evaluates to the value `false`.	from ControlFlowNode
isAfterTrue	Holds if this node indicates that `n` evaluates to the value `true`.	from ControlFlowNode
isAfterValue	Holds if this node indicates that `n` evaluates to the value `t`.	from ControlFlowNode
isBefore	Holds if this is the node representing the point in the control flow before the execution of `n`.	from NodeImpl
isIn	Holds if this is the node representing the given AST node when `n` has an in-order or post-order execution.	from NodeImpl
postDominates	Holds if this node post-dominates `that` node.	from ControlFlowNode
strictlyDominates	Holds if this node strictly dominates `that` node.	from ControlFlowNode
strictlyPostDominates	Holds if this node strictly post-dominates `that` node.	from ControlFlowNode
toString	Gets a textual representation of this node.	from NodeImpl