| Class | +MCollective::Matcher::Parser | +
| In: | +
+
+ lib/mcollective/matcher/parser.rb
+
+ + |
+
| Parent: | ++ Object + | +
| execution_stack | +[R] | ++ |
| scanner | +[R] | ++ |
+ # File lib/mcollective/matcher/parser.rb, line 6 + 6: def initialize(args) + 7: @scanner = Scanner.new(args) + 8: @execution_stack = [] + 9: @parse_errors = [] +10: @token_errors = [] +11: @paren_errors = [] +12: parse +13: exit_with_token_errors if @token_errors.size > 0 +14: exit_with_parse_errors if @parse_errors.size > 0 +15: exit_with_paren_errors if @paren_errors.size > 0 +16: end ++
+ # File lib/mcollective/matcher/parser.rb, line 37 +37: def exit_with_paren_errors +38: @paren_errors.each do |i| +39: @scanner.arguments[i] = Util.colorize(:red, @scanner.arguments[i]) +40: end +41: raise "Missing parenthesis found while parsing -S input #{@scanner.arguments.join}" +42: end ++
+ # File lib/mcollective/matcher/parser.rb, line 28 +28: def exit_with_parse_errors +29: @parse_errors.each do |error_range| +30: (error_range[0]..error_range[1]).each do |i| +31: @scanner.arguments[i] = Util.colorize(:red, @scanner.arguments[i]) +32: end +33: end +34: raise "Parse errors found while parsing -S input #{ @scanner.arguments.join}" +35: end ++
+Exit and highlight any malformed tokens +
+ ++ # File lib/mcollective/matcher/parser.rb, line 19 +19: def exit_with_token_errors +20: @token_errors.each do |error_range| +21: (error_range[0]..error_range[1]).each do |i| +22: @scanner.arguments[i] = Util.colorize(:red, @scanner.arguments[i]) +23: end +24: end +25: raise "Malformed token(s) found while parsing -S input #{@scanner.arguments.join}" +26: end ++
+Parse the input string, one token at a time a contruct the call stack +
+ ++ # File lib/mcollective/matcher/parser.rb, line 45 + 45: def parse + 46: pre_index = @scanner.token_index + 47: p_token,p_token_value = nil + 48: c_token,c_token_value = @scanner.get_token + 49: parenth = 0 + 50: + 51: while (c_token != nil) + 52: @scanner.token_index += 1 + 53: n_token, n_token_value = @scanner.get_token + 54: + 55: unless n_token == " " + 56: case c_token + 57: when "bad_token" + 58: @token_errors << c_token_value + 59: + 60: when "and" + 61: unless (n_token =~ /not|fstatement|statement|\(/) || (scanner.token_index == scanner.arguments.size) && !(n_token == nil) + 62: @parse_errors << [pre_index, scanner.token_index] + 63: end + 64: + 65: if p_token == nil + 66: @parse_errors << [pre_index - c_token.size, scanner.token_index] + 67: elsif (p_token == "and" || p_token == "or") + 68: @parse_errors << [pre_index - 1 - p_token.size, pre_index - 1] + 69: end + 70: + 71: when "or" + 72: unless (n_token =~ /not|fstatement|statement|\(/) || (scanner.token_index == scanner.arguments.size) && !(n_token == nil) + 73: @parse_errors << [pre_index, scanner.token_index] + 74: end + 75: + 76: if p_token == nil + 77: @parse_errors << [pre_index - c_token.size, scanner.token_index] + 78: elsif (p_token == "and" || p_token == "or") + 79: @parse_errors << [pre_index - 1 - p_token.size, pre_index - 1] + 80: end + 81: + 82: when "not" + 83: unless n_token =~ /fstatement|statement|\(|not/ && !(n_token == nil) + 84: @parse_errors << [pre_index, scanner.token_index] + 85: end + 86: + 87: when "statement","fstatement" + 88: unless n_token =~ /and|or|\)/ + 89: unless scanner.token_index == scanner.arguments.size + 90: @parse_errors << [pre_index, scanner.token_index] + 91: end + 92: end + 93: + 94: when ")" + 95: unless (n_token =~ /|and|or|not|\(/) + 96: unless(scanner.token_index == scanner.arguments.size) + 97: @parse_errors << [pre_index, scanner.token_index] + 98: end + 99: end +100: unless @paren_errors.empty? +101: @paren_errors.pop +102: else +103: @paren_errors.push((n_token.nil?) ? scanner.token_index - 1: scanner.token_index - n_token_value.size) +104: end +105: +106: when "(" +107: unless n_token =~ /fstatement|statement|not|\(/ +108: @parse_errors << [pre_index, scanner.token_index] +109: end +110: @paren_errors.push((n_token.nil?) ? scanner.token_index - 1: scanner.token_index - n_token_value.size) +111: +112: else +113: @parse_errors << [pre_index, scanner.token_index] +114: end +115: +116: unless n_token == " " ||c_token == "bad_token" +117: @execution_stack << {c_token => c_token_value} +118: end +119: +120: p_token, p_token_value = c_token, c_token_value +121: c_token, c_token_value = n_token, n_token_value +122: end +123: pre_index = @scanner.token_index +124: end +125: end ++