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Shell: Fix job control and backgrounding

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This patchset makes the shell capable of lazily resolving and executing
sequences of commands, to allow for putting logical sequences in the
background.
In particular, it enables And/Or/Sequence nodes to be run in the background,
and consequently unmarks them as `would_execute`.
Doing so also fixes job control to an extent, as jobs are now capable of
having 'tails', so sequences can be put in the background while
preserving their following sequences.
This commit is contained in:
AnotherTest 2020-09-01 08:42:16 +04:30 • committed by Andreas Kling
parent a2a54f459f
commit 715e11f692
10 changed files with 180 additions and 151 deletions
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4
Shell/Parser.cpp
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@ -283,7 +283,7 @@ RefPtr<AST::Node> Parser::parse_or_logical_sequence()
if (!right_and_sequence)
right_and_sequence = create<AST::SyntaxError>("Expected an expression after '||'");
return create<AST::Or>(create<AST::Execute>(move(and_sequence)), create<AST::Execute>(move(right_and_sequence)));
return create<AST::Or>(move(and_sequence), move(right_and_sequence));
}
RefPtr<AST::Node> Parser::parse_and_logical_sequence()
@ -305,7 +305,7 @@ RefPtr<AST::Node> Parser::parse_and_logical_sequence()
if (!right_and_sequence)
right_and_sequence = create<AST::SyntaxError>("Expected an expression after '&&'");
return create<AST::And>(create<AST::Execute>(move(pipe_sequence)), create<AST::Execute>(move(right_and_sequence)));
return create<AST::And>(move(pipe_sequence), move(right_and_sequence));
}
RefPtr<AST::Node> Parser::parse_pipe_sequence()