Bruce Hill
10bd72e858
better error reporting, e.g. for (fail) (no arguments). Overall better
error reporting now. Also added shorthand ("Action" tree with ...) for
(SyntaxTree {.type = "Action", .1 = ...}).
27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
#
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This file defines some actions for running shell commands.
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external:
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(at $callsite =sh $cmd) means:
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$f = ($io.popen $cmd)
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$contents = ($f, read "*a")
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[$ok, $return_type, $return] = ($f, close)
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unless $ok:
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if ($return_type == "exit"):
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at $callsite fail "Command failure: Command `\$cmd` failed with exit code \$return"
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..else:
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at $callsite fail "Command failure: Command `\$cmd` was terminated by signal \$return"
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return $contents
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(at $callsite sh> $cmd) means:
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[$ok, $return_type, $return] = ($os.execute $cmd)
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unless $ok:
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if ($return_type == "exit"):
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at $callsite fail "Command failure: Command `\$cmd` failed with exit code \$return"
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..else:
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at $callsite fail "Command failure: Command `\$cmd` was terminated by signal \$return"
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# Attach callsite information for better error reporting
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(=sh $cmd) compiles to (\(at ("Text" tree with "\($cmd.source)") =sh $cmd) as lua)
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(sh> $cmd) compiles to (\(at ("Text" tree with "\($cmd.source)") sh> $cmd) as lua)
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