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# A syntax checker for JSON.
# @api public
require_relative '../../puppet/syntax_checkers'
class Puppet::SyntaxCheckers::PP < Puppet::Plugins::SyntaxCheckers::SyntaxChecker
# Checks the text for Puppet Language syntax issues and reports them to the given acceptor.
#
# Error messages from the checker are capped at 100 chars from the source text.
#
# @param text [String] The text to check
# @param syntax [String] The syntax identifier in mime style (only accepts 'pp')
# @param acceptor [#accept] A Diagnostic acceptor
# @param source_pos [Puppet::Pops::Adapters::SourcePosAdapter] A source pos adapter with location information
# @api public
#
def check(text, syntax, acceptor, source_pos)
raise ArgumentError.new(_("PP syntax checker: the text to check must be a String.")) unless text.is_a?(String)
raise ArgumentError.new(_("PP syntax checker: the syntax identifier must be a String, e.g. pp")) unless syntax == 'pp'
raise ArgumentError.new(_("PP syntax checker: invalid Acceptor, got: '%{klass}'.") % { klass: acceptor.class.name }) unless acceptor.is_a?(Puppet::Pops::Validation::Acceptor)
begin
Puppet::Pops::Parser::EvaluatingParser.singleton.parse_string(text)
rescue => e
# Cap the message to 100 chars and replace newlines
msg = _("PP syntax checker: \"%{message}\"") % { message: e.message().slice(0,500).gsub(/\r?\n/, "\\n") }
# TODO: improve the pops API to allow simpler diagnostic creation while still maintaining capabilities
# and the issue code. (In this case especially, where there is only a single error message being issued).
#
issue = Puppet::Pops::Issues::issue(:ILLEGAL_PP) { msg }
acceptor.accept(Puppet::Pops::Validation::Diagnostic.new(:error, issue, source_pos.file, source_pos, {}))
end
end
end
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