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|
(module
(event $e-i32 (attr 0) (param i32))
(event $e-i64 (attr 0) (param i64))
(event $e-i32-i64 (attr 0) (param i32 i64))
(func $foo)
(func $bar)
(func $eh_test (local $x (i32 i64))
;; Simple try-catch
(try
(do
(throw $e-i32 (i32.const 0))
)
(catch $e-i32
(drop (pop i32))
)
)
;; try-catch with multivalue event
(try
(do
(throw $e-i32-i64 (i32.const 0) (i64.const 0))
)
(catch $e-i32-i64
(local.set $x (pop i32 i64))
(drop
(tuple.extract 0
(local.get $x)
)
)
)
)
;; Try with a block label
(try $l1
(do
(br $l1)
)
(catch $e-i32
(drop (pop i32))
(br $l1)
)
)
;; Empty try body
(try
(do)
(catch $e-i32
(drop (pop i32))
)
)
;; Multiple instructions within try and catch bodies
(try
(do
(call $foo)
(call $bar)
)
(catch $e-i32
(drop (pop i32))
(call $foo)
(call $bar)
)
)
;; Multiple catch clauses
(try
(do
(throw $e-i32 (i32.const 0))
)
(catch $e-i32
(drop (pop i32))
)
(catch $e-i64
(drop (pop i64))
)
)
;; Single catch-all clause
(try
(do
(throw $e-i32 (i32.const 0))
)
(catch_all)
)
;; catch and catch-all clauses together
(try
(do
(throw $e-i32 (i32.const 0))
)
(catch $e-i32
(drop (pop i32))
)
(catch $e-i64
(drop (pop i64))
)
(catch_all
(call $foo)
(call $bar)
)
)
;; nested try-catch
(try
(do
(try
(do
(throw $e-i32 (i32.const 0))
)
(catch $e-i32
(drop (pop i32))
)
(catch_all)
)
)
(catch $e-i32
(drop (pop i32))
)
(catch_all
(try
(do
(throw $e-i32 (i32.const 0))
)
(catch $e-i32
(drop (pop i32))
)
(catch_all)
)
)
)
;; rethrow
(try
(do
(throw $e-i32 (i32.const 0))
)
(catch $e-i32
(drop (pop i32))
(rethrow 0)
)
)
)
(func $delegate-test
;; Inner delegates target an outer catch
(try $l0
(do
(try
(do
(call $foo)
)
(delegate $l0) ;; by label
)
(try
(do
(call $foo)
)
(delegate 0) ;; by depth
)
)
(catch_all)
)
;; When there are both a branch and a delegate that target the same try
;; label. Because binaryen only allows blocks and loops to be targetted by
;; branches, we wrap the try with a block and make branches that block
;; instead, resulting in the br and delegate target different labels in the
;; output.
(try $l0
(do
(try
(do
(br_if $l0 (i32.const 1))
)
(delegate $l0) ;; by label
)
(try
(do
(br_if $l0 (i32.const 1))
)
(delegate 0) ;; by depth
)
)
(catch_all)
)
;; The inner delegate targets the outer delegate, which in turn targets the
;; caller.
(try $l0
(do
(try
(do
(call $foo)
)
(delegate $l0)
)
)
(delegate 0)
)
)
)
|
