[cfe-dev] A newbie question on getting operator in Expr

[Sirinda Palahan]

Hi there

I am using clang to instrument code to print out all assignment  
statements that are relevant to formal variables.
I implement ASTConsumer and StmtVisitor to visit Stmt, especially  
Expr. Right now I can get all expressions in a code. What I want to do  
is to check if the expression contains an assignment operator. If it  
does, I would like to get LHS and RHS of the expression to see if  
there is any formal variables in it.

For example: an expression-> x = y + z;
I want to get x and (y+z) , then decompose y+z to y z and +

  How could I do that?

Thank you very much.
- Sirinda
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