Iterating through an Expression in the Clang AST

Clang Frontend
#1

Hi,

I want to iterate through an Expression while visiting the nodes in the
Clang AST. Using the function VisitExpr(),
I am able to visit various expressions, but I wish to find sub expessions
for analysis.

Eg. given an expression: 3+A+B, I wish to iterate through this expression
and visit 3,A and B.

Does anyone have any idea how this can be done?

Thanks

#2

Expressions are derived from Statements. You can use the child_begin and
child_end iterators in Statement to iterate through child statements. Use
dump() to output the whole expression (including children) on to the std
stream.

#3

thanks! i used the iterators to iterate through a stmt but how do i check
what type the sub statement contains? eg. how do i find out if the sub
statement is say, a binary operator?

#4

Thanks everyone!