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Print offending object in runtime error messages

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When reporting an error to the user, add information about the offending
object/value (possibly truncated).

The goal is to give a user some context regarding which input object
caused the runtime error.

Examples:

    $ echo '"hello"' | ./jq '-.'
    jq: error: string ("hello") cannot be negated

    $ echo '"very-long-string"' | ./jq '-.'
    jq: error: string ("very-long-...) cannot be negated

    $ echo '["1",2]' | ./jq '.|join(",")'
    jq: error: string (",") and number (2) cannot be added

    $ echo '["1","2",{"a":{"b":{"c":33}}}]' | ./jq '.|join(",")'
    jq: error: string (",") and object ({"a":{"b":{...) cannot be added

    $ echo '{"a":{"b":{"c":33}}}' | ./jq '.a | @tsv'
    jq: error: object ({"b":{"c":33}}) cannot be tsv-formatted, only array

(Fix #754)
This commit is contained in:
Assaf Gordon authored and Nicolas Williams committed 2015-05-21 18:49:24 -05:00
1 parent a50e548cc5
commit 7b6a018dff
5 files changed
+44 -6
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builtin.c
+7 -2
View File
@@ -22,17 +22,22 @@
static jv type_error(jv bad, const char* msg) {
jv err = jv_invalid_with_msg(jv_string_fmt("%s %s",
char errbuf[15];
jv err = jv_invalid_with_msg(jv_string_fmt("%s (%s) %s",
jv_kind_name(jv_get_kind(bad)),
jv_dump_string_trunc(jv_copy(bad), errbuf, sizeof(errbuf)),
msg));
jv_free(bad);
return err;
}
static jv type_error2(jv bad1, jv bad2, const char* msg) {
jv err = jv_invalid_with_msg(jv_string_fmt("%s and %s %s",
char errbuf1[15],errbuf2[15];
jv err = jv_invalid_with_msg(jv_string_fmt("%s (%s) and %s (%s) %s",
jv_kind_name(jv_get_kind(bad1)),
jv_dump_string_trunc(jv_copy(bad1), errbuf1, sizeof(errbuf1)),
jv_kind_name(jv_get_kind(bad2)),
jv_dump_string_trunc(jv_copy(bad2), errbuf2, sizeof(errbuf2)),
msg));
jv_free(bad1);
jv_free(bad2);