parsing error are not properly reported

[ImpleLee]

Steps to reproduce

0. create an empty directory in /tmp and cd into it.
1. pip install hererocks
2. hererocks . -r^ --lua=5.3
3. ./bin/luarocks install lua-parser
4. copy the code example in README as parse.lua:

local parser = require "lua-parser.parser"
local pp = require "lua-parser.pp"

if #arg ~= 1 then
    print("Usage: parse.lua <string>")
    os.exit(1)
end

local ast, error_msg = parser.parse(arg[1], "example.lua")
if not ast then
    print(error_msg)
    os.exit(1)
end

pp.print(ast)
os.exit(0)

5. ./bin/lua parse.lua "for i=1, 10 do print(i)"

Expected behavior

example.lua:1:24: syntax error, expected 'end' to close the for loop

Actual behavior

./bin/lua: ./share/lua/5.3/lua-parser/parser.lua:478: attempt to get length of a number value (local 'sfail')
stack traceback:
	./share/lua/5.3/lua-parser/parser.lua:478: in function 'lua-parser.parser.parse'
	parse.lua:9: in main chunk
	[C]: in ?

[ImpleLee]

System Information

$ uname -srvmo
Linux 5.4.0-109-generic #123-Ubuntu SMP Fri Apr 8 09:10:54 UTC 2022 x86_64 GNU/Linux

[ImpleLee]

Package Information

$ ./bin/luarocks list

Rocks installed for Lua 5.3
---------------------------

lpeglabel
   1.6.0-1 (installed) - ./lib/luarocks/rocks-5.3

lua-parser
   1.0.1-1 (installed) - ./lib/luarocks/rocks-5.3

[ImpleLee]

I think this is maybe just #15 again...

[ImpleLee]

In rockspec of 1.0.1, the tag is specified as v1.0.0, so users from luarocks will just use the wrong code...

lua-parser/rockspecs/lua-parser-1.0.1-1.rockspec

Line 6 in e98c1f4

tag = "v1.0.0",

[andremm]

5. ./bin/lua parse.lua "for i=1, 10 do print(i)"

Thanks for spotting this issue and sorry for the inconvenience. I just pushed a new release that should solved this issue.