diff options
| author | Alasdair Armstrong | 2018-07-12 16:14:13 +0100 |
|---|---|---|
| committer | Alasdair Armstrong | 2018-07-12 16:14:13 +0100 |
| commit | d482dcd0152b1f44faf1ad3b1ae06c029a048dab (patch) | |
| tree | 0c92d89e12c7872592571558ba400eb6b0e64a00 | |
| parent | 79ecf8b83b06a6bd1330e1f243826cbe951a9e7d (diff) | |
Handle failures during interpreting better
Changes to the interpreter to better support constant folding during
compilation mean it can now throw exceptions to the caller, allow the
caller to handle the error, rather than simply printing an error. This
broke the ARM interpreter test because exit() is handled by throwing
an Exit exception in the interpreter.
| -rw-r--r-- | src/isail.ml | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/src/isail.ml b/src/isail.ml index 593167f9..4adc1cd2 100644 --- a/src/isail.ml +++ b/src/isail.ml @@ -127,7 +127,12 @@ let rec run () = print_endline ("Result = " ^ Value.string_of_value v); current_mode := Normal | Step (out, state, _, stack) -> - current_mode := Evaluation (eval_frame !interactive_ast frame); + begin + try + current_mode := Evaluation (eval_frame !interactive_ast frame) + with + | Failure str -> print_endline str; current_mode := Normal + end; run () | Break frame -> print_endline "Breakpoint"; @@ -147,7 +152,12 @@ let rec run_steps n = print_endline ("Result = " ^ Value.string_of_value v); current_mode := Normal | Step (out, state, _, stack) -> - current_mode := Evaluation (eval_frame !interactive_ast frame); + begin + try + current_mode := Evaluation (eval_frame !interactive_ast frame) + with + | Failure str -> print_endline str; current_mode := Normal + end; run_steps (n - 1) | Break frame -> print_endline "Breakpoint"; @@ -352,9 +362,14 @@ let handle_input' input = print_endline ("Result = " ^ Value.string_of_value v); current_mode := Normal | Step (out, state, _, stack) -> - interactive_state := state; - current_mode := Evaluation (eval_frame !interactive_ast frame); - print_program () + begin + try + interactive_state := state; + current_mode := Evaluation (eval_frame !interactive_ast frame); + print_program () + with + | Failure str -> print_endline str; current_mode := Normal + end | Break frame -> print_endline "Breakpoint"; current_mode := Evaluation frame |