A match expression. For example:
match x {
Option::Some(y) => y,
Option::None => 0,
}
match x {
Some(y) if y != 0 => 1 / y,
_ => 0,
}
Import path
import codeql.rust.elements.internal.MatchExprImplDirect supertypes
Indirect supertypes
Predicates
| getAnArm | Gets any of the arms of this match expression. |
| getArm | Gets the |
| getLastArm | Gets the last arm of this match expression. Due to exhaustiveness checking, this arm is guaranteed to succeed. |
| getNumberOfArms | Gets the number of arms of this match expression. |
| toStringImpl | INTERNAL: Do not use. |
Inherited predicates
| fromSource | Holds if this element is from source code. | from Locatable |
| getACfgNode | Gets a control flow node for this AST node, if any. | from AstNode |
| getAPrimaryQlClass | Gets the name of a primary CodeQL class to which this element belongs. | from MatchExpr |
| getAnAttr | Gets any of the attrs of this match expression. | from MatchExpr |
| getAttr | Gets the | from MatchExpr |
| getEnclosingBlock | Gets the block that encloses this node, if any. | from AstNode |
| getEnclosingCallable | Gets the immediately enclosing callable of this node, if any. | from AstNode |
| getEnclosingCfgScope | Gets the CFG scope that encloses this node, if any. | from AstNode |
| getFile | Gets the primary file where this element occurs. | from Locatable |
| getLocation | from Locatable | |
| getMatchArmList | Gets the match arm list of this match expression, if it exists. | from MatchExpr |
| getNumberOfAttrs | Gets the number of attrs of this match expression. | from MatchExpr |
| getParentNode | Gets the nearest enclosing parent of this node, which is also an | from AstNode |
| getPrimaryQlClasses | Gets a comma-separated list of the names of the primary CodeQL classes to which this element belongs. | from Element |
| getResolveStep | Gets the most immediate element that should substitute this element in the explicit AST, if any. Classes can override this to indicate this node should be in the “hidden” AST, mostly reserved for conversions and syntactic sugar nodes like parentheses. | from Element |
| getScrutinee | Gets the scrutinee (the expression being matched) of this match expression, if it exists. | from MatchExpr |
| hasEnclosingCfgScope | Holds if this node is inside a CFG scope. | from AstNode |
| hasMatchArmList | Holds if | from MatchExpr |
| hasScrutinee | Holds if | from MatchExpr |
| isFromMacroExpansion | Holds if this node exists only as the result of a macro expansion. | from AstNode |
| isInMacroExpansion | Holds if this node is inside a macro expansion. | from AstNode |
| isUnknown | from Element | |
| resolve | Gets the element that should substitute this element in the explicit AST, applying | from Element |
| toAbbreviatedString | INTERNAL: Do not use. | from Element |
| toString | Gets the string representation of this element. | from Element |