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41551de331
repl now rewrites query to do implicit display inside the sub eval. This makes it possible to interrupt eval and output in a better and faster way. Make JSON encoder fail early on errors. Add more interrupt tests.
109 lines
3.0 KiB
Plaintext
109 lines
3.0 KiB
Plaintext
include "internal";
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include "query";
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def _eval_error($what; $error):
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error({
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what: $what,
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error: $error,
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column: 0,
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line: 1,
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filename: ""
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});
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def _eval_error_function_not_defined($name; $args):
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_eval_error(
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"compile";
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"function not defined: \($name)/\($args | length)"
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);
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# if catch_query . -> try (.) catch .catch_query
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# if input_query . -> .input_query | .
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# if ... | <.slurp.> -> .slurp({slurp: "<slurp>", slurp_args: [arg query ast], orig: orig query ast, rewrite: rewritten query})
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# else if .output_query -> . | .output_query
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#
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# ex ... | slurp -> <slurp>({...})
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# ex no slurp: . -> try (.input_query | . | .output_query) catch .catch_query
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def _eval_query_rewrite($opts):
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_query_fromtostring(
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( . as $orig_query
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| _query_pipe_last as $last
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| ( $last
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| if _query_is_func then [_query_func_name, _query_func_args]
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else ["", []]
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end
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) as [$last_func_name, $last_func_args]
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| $opts.slurps[$last_func_name] as $slurp
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| if $slurp then
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_query_transform_pipe_last(_query_ident)
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end
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| if $opts.catch_query then
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# _query_query to get correct precedence and a valid query
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# try (1+1) catch vs try 1 + 1 catch
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_query_try(. | _query_query; $opts.catch_query)
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end
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| if $opts.input_query then
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_query_pipe($opts.input_query; .)
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end
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| if $slurp then
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_query_func(
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$slurp;
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[ # pass original, rewritten and args queries as query ast trees
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( { slurp: _query_string($last_func_name)
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, slurp_args:
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( $last_func_args
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| if . then
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( map(_query_toquery)
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| _query_commas
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| _query_array
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)
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else (null | _query_array)
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end
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)
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, orig: ($orig_query | _query_toquery)
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, rewrite: _query_toquery
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}
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| _query_object
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)
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]
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)
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elif $opts.output_query then
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_query_pipe(.; $opts.output_query)
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end
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)
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);
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# TODO: better way? what about nested eval errors?
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def _eval_is_compile_error:
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type == "object" and .error != null and .what != null;
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def _eval_compile_error_tostring:
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[ (.filename // "expr")
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, if .line != 1 or .column != 0 then "\(.line):\(.column)"
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else empty
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end
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, " \(.error)"
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] | join(":");
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def eval($expr; $opts; on_error; on_compile_error):
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( . as $c
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| ($opts.filename // "expr") as $filename
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| try
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_eval(
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$expr | _eval_query_rewrite($opts);
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$filename
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)
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catch
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if _eval_is_compile_error then
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# rewrite parse error will not have filename
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( .filename = $filename
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| {error: ., input: $c}
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| on_compile_error
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)
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else
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( {error: ., input: $c}
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| on_error
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)
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end
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);
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def eval($expr): eval($expr; {}; .error | error; .error | error);
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