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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-04-14 13:05:52 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-04-14 13:05:52 +0000 |
commit | 9fa0d0058d234ee2d3557761605870a4904840c2 (patch) | |
tree | e3dd695c401cd75c04fb5265fa1f1730b29a9ddc | |
parent | d6dc676d07427e4c1459e9c7509329bb54cbdc7c (diff) | |
download | ruby-9fa0d0058d234ee2d3557761605870a4904840c2.tar.gz |
irb.rb: restore the last error
* lib/irb.rb (eval_input): restore the last error `$!`, as the
previous result. [Feature #14684]
* lib/irb/context.rb (evaluate): add `exception` keyword argument
to set the last error.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63150 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | lib/irb.rb | 5 | ||||
-rw-r--r-- | lib/irb/context.rb | 6 | ||||
-rw-r--r-- | test/irb/test_context.rb | 9 |
3 files changed, 18 insertions, 2 deletions
diff --git a/lib/irb.rb b/lib/irb.rb index 16c03e964f..98bcac016d 100644 --- a/lib/irb.rb +++ b/lib/irb.rb @@ -439,6 +439,8 @@ module IRB # Evaluates input for this session. def eval_input + last_error = nil + @scanner.set_prompt do |ltype, indent, continue, line_no| if ltype @@ -488,7 +490,7 @@ module IRB signal_status(:IN_EVAL) do begin line.untaint - @context.evaluate(line, line_no) + @context.evaluate(line, line_no, exception: last_error) output_value if @context.echo? exc = nil rescue Interrupt => exc @@ -497,6 +499,7 @@ module IRB rescue Exception => exc end if exc + last_error = exc handle_exception(exc) end end diff --git a/lib/irb/context.rb b/lib/irb/context.rb index 1a06ebfad1..b82aaea6a6 100644 --- a/lib/irb/context.rb +++ b/lib/irb/context.rb @@ -376,8 +376,12 @@ module IRB @debug_level > 0 end - def evaluate(line, line_no) # :nodoc: + def evaluate(line, line_no, exception: nil) # :nodoc: @line_no = line_no + if exception + line = "begin ::Kernel.raise _; rescue _.class; #{line}; end" + @workspace.local_variable_set(:_, exception) + end set_last_value(@workspace.evaluate(self, line, irb_path, line_no)) end diff --git a/test/irb/test_context.rb b/test/irb/test_context.rb index 35141a41a4..1faf2b373d 100644 --- a/test/irb/test_context.rb +++ b/test/irb/test_context.rb @@ -40,5 +40,14 @@ module TestIRB assert_same(obj, @context.last_value) assert_same(obj, @context.evaluate('_', 1)) end + + def test_evaluate_with_exception + assert_nil(@context.evaluate("$!", 1)) + e = assert_raise_with_message(RuntimeError, 'foo') { + @context.evaluate("raise 'foo'", 1) + } + assert_equal('foo', e.message) + assert_same(e, @context.evaluate('$!', 1, exception: e)) + end end end |