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eval: Use better error messages when failing to dump values

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Examples:

    let g:SR = [[]]
    call add(g:SR[0], g:SR)
    wshada
    " E952: Unable to dump variable g:SR: container references itself in index 0, index 0

    let g:F = {'_TYPE': v:msgpack_types.map, '_VAL': [[{'abc': 1}, function("tr")]]}
    wshada
    " E951: Error while dumping variable g:F, key {'abc': 1} at index 0 from special map, key '': attempt to dump function reference
    " (no msgpack#string available)
    " E951: Error while dumping variable g:F, key {="abc": 1} at index 0 from special map, key '': attempt to dump function reference
    " (msgpack#string available)

    let g:F = {'_TYPE': v:msgpack_types.map, '_VAL': [[g:SR, function("tr")]]}
    wshada
    " E951: Error while dumping variable g:F, key [[[[{E724@0}]]]] at index 0 from special map, index 1: attempt to dump function reference

    call msgpackdump([g:SR])
    " E952: Unable to dump msgpackdump() argument, index 0: container references itself in index 0, index 0

Not tested yet.
This commit is contained in:
ZyX
2016-01-04 17:20:16 +03:00
parent 59eaba2894
commit d26b01d4bd
3 changed files with 147 additions and 32 deletions
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3
src/nvim/eval.h
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@@ -118,7 +118,8 @@ enum {
/// Maximum number of function arguments
#define MAX_FUNC_ARGS 20
int vim_to_msgpack(msgpack_packer *const, typval_T *const);
int vim_to_msgpack(msgpack_packer *const, typval_T *const,
const char *const objname);
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "eval.h.generated.h"