INTERFACE M3CChkRaises;
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IMPORT AST, M3AST_AS;
IMPORT ASTWalk;
The following procedures check whether procedure calls or RAISE statements
raise exceptions which are not dealt with by an enclosing RAISES or TRY EXCEPT
statement, or mentioned in an FATAL pragma.
TYPE
Handle <: ASTWalk.Closure;
PROCEDURE NewHandle(
cu: M3AST_AS.Compilation_Unit)
: Handle
RAISES {};
Create a new handle for use with the 'Node' procedure. 'cu' is the unit
containing the tree which will be walked. The result handle can be
passed directly to the tree walker or directly to 'Node' from another
tree walk, as desired.
PROCEDURE Node(h: Handle; n: AST.NODE; vm: ASTWalk.VisitMode) RAISES {};
This procedure is intended to be called from the tree walker (in
entry and exit mode) so that it is called on every node in a section of AST.
It checks for places which may raise exceptions which may not be caught.
END M3CChkRaises.