[GROOVY-7979] JsonSlurper parses a single minus character as a number

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4.7
• Fix Version/s: 2.4.12
• Component/s: JSON
• Assignee: John Wagenleitner
• Reporter: John Wagenleitner
• Created: 28/Oct/16 21:10
• Updated: 06/Mar/18 23:14
• Resolved: 27/May/17 21:32

Description

A minus sign not followed by some digits should fail parsing but succeeds. The Character Source parser correctly throws an exception..

import groovy.json.*
import static groovy.json.JsonParserType.*

println new JsonSlurper().setType(CHAR_BUFFER).parseText('[-]') // [-45]
println new JsonSlurper().setType(INDEX_OVERLAY).parseText('[-]') // [-45]
println new JsonSlurper().setType(LAX).parseText('[-]') // [-45]

println new JsonSlurper().setType(CHARACTER_SOURCE).parseText('[-]') // throws JsonException

The parsers fail to recognize that no digits are appearing after the minus and end up calculating a value based on the next char value. For example, the char value of ] is 93 and that from the char value of 0 (48) is 45.

Issue Links

• links to: GitHub Pull Request #552