fn mk_ident(builder: &aster::AstBuilder, ident: ast::Ident) -> P<ast::Expr> {
    builder.expr().method_call("ident_of").id("ext_cx")
        .arg().str(ident)
        .build()
}
// Lift an ident to the expr that evaluates to that ident.
Lift an ident to the expr that evaluates to that ident.
Lift an ident to the expr that evaluates to that ident .
fn mk_ident(builder: &aster::AstBuilder, ident: ast::Ident) -> P<ast::Expr> {
    builder.expr().method_call("ident_of").id("ext_cx")
        .arg().str(ident)
        .build()
}
fn mk_ident ( builder : & aster :: AstBuilder , ident : ast :: Ident ) -> P < ast :: Expr > { builder . expr ( ) . method_call ( " " ) . id ( " " ) . arg ( ) . str ( ident ) . build ( ) }
Lift an ident to the expr that evaluates to that ident.
Lift an ident to the expr that evaluates to that ident .
builder
&aster::AstBuilder
ident
ast::Ident
builder
&aster::AstBuilder
ident
ast::Ident