Class: Puppet::Pops::Parser::EvaluatingParser

Inherits:
Object
  • Object
show all
Extended by:
Concurrent::ThreadLocalSingleton
Defined in:
lib/puppet/pops/parser/evaluating_parser.rb

Overview

Does not support “import” and parsing ruby files

Direct Known Subclasses

EvaluatingEppParser

Defined Under Namespace

Classes: EvaluatingEppParser

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Concurrent::ThreadLocalSingleton

singleton

Constructor Details

#initialize ⇒ EvaluatingParser

Returns a new instance of EvaluatingParser.

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 14 def initialize @parser = Parser.new() end

Instance Attribute Details

#parser ⇒ Object (readonly) 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 12 def parser @parser end

Class Method Details

.quote(x) ⇒ String

Translates an already parsed string that contains control characters, quotes and backslashes into a quoted string where all such constructs have been escaped. Parsing the return value of this method using the puppet parser should yield exactly the same string as the argument passed to this method

The method makes an exception for the two character sequences $ and s. They will not be escaped since they have a special meaning in puppet syntax.

TODO: Handle uXXXX characters ??

Parameters:

  • x (String) —

    The string to quote and “unparse”

Returns:

  • (String) —

    The quoted string

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 130 def self.quote(x) escaped = '"'.dup p = nil x.each_char do |c| case p when nil # do nothing  when "\t" escaped << '\\t' when "\n" escaped << '\\n' when "\f" escaped << '\\f' # TODO: \cx is a range of characters - skip for now  # when "\c"  # escaped << '\\c'  when '"' escaped << '\\"' when '\\' escaped << ((c == '$' || c == 's') ? p : '\\\\') # don't escape \ when followed by s or $  else escaped << p end p = c end escaped << p unless p.nil? escaped << '"' end

Instance Method Details

#acceptor ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 92 def acceptor Validation::Acceptor.new end

#assert_and_report(parse_result, file_source) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 100 def assert_and_report(parse_result, file_source) return nil unless parse_result if parse_result['source_ref'].nil? || parse_result['source_ref'] == '' parse_result['source_ref'] = file_source end validation_result = validate(parse_result.model) IssueReporter.assert_and_report(validation_result, :emit_warnings => true) parse_result end

#clear ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 50 def clear @acceptor = nil end

#closure(model, scope) ⇒ Object

Create a closure that can be called in the given scope

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 55 def closure(model, scope) Evaluator::Closure::Dynamic.new(evaluator, model, scope) end

#convert_to_3x(object, scope) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 82 def convert_to_3x(object, scope) evaluator.convert(object, scope, nil) end

#evaluate(scope, model) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 59 def evaluate(scope, model) return nil unless model evaluator.evaluate(model, scope) end

#evaluate_expression_with_bindings(scope, variable_bindings, expression) ⇒ Object

Evaluates the given expression in a local scope with the given variable bindings set in this local scope, returns what the expression returns.

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 68 def evaluate_expression_with_bindings(scope, variable_bindings, expression) evaluator.evaluate_block_with_bindings(scope, variable_bindings, expression) end

#evaluate_file(scope, file) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 46 def evaluate_file(scope, file) evaluate(scope, parse_file(file)) end

#evaluate_string(scope, s, file_source = nil) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 42 def evaluate_string(scope, s, file_source = nil) evaluate(scope, parse_string(s, file_source)) end

#evaluator ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 72 def evaluator # Do not use the cached evaluator if this is a migration run  if Puppet.lookup(:migration_checker) { nil } return Evaluator::EvaluatorImpl.new() end @@evaluator ||= Evaluator::EvaluatorImpl.new() @@evaluator end

#parse_file(file) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 37 def parse_file(file) clear() assert_and_report(parser.parse_file(file), file).model end

#parse_string(s, file_source = nil) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 18 def parse_string(s, file_source = nil) clear() # Handling of syntax error can be much improved (in general), now it bails out of the parser  # and does not have as rich information (when parsing a string), need to update it with the file source  # (ideally, a syntax error should be entered as an issue, and not just thrown - but that is a general problem  # and an improvement that can be made in the eparser (rather than here).  # Also a possible improvement (if the YAML parser returns positions) is to provide correct output of position.  #  begin assert_and_report(parser.parse_string(s, file_source), file_source).model rescue Puppet::ParseErrorWithIssue => e raise e rescue Puppet::ParseError => e # TODO: This is not quite right, why does not the exception have the correct file?  e.file = file_source unless e.file.is_a?(String) && !e.file.empty? raise e end end

#quote(x) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 113 def quote(x) self.class.quote(x) end

#validate(parse_result) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 86 def validate(parse_result) resulting_acceptor = acceptor() validator(resulting_acceptor).validate(parse_result) resulting_acceptor end

#validator(acceptor) ⇒ Object 

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# File 'lib/puppet/pops/parser/evaluating_parser.rb', line 96 def validator(acceptor) Validation::ValidatorFactory_4_0.new().validator(acceptor) end