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- MCollective::Matcher
+ +
+
-
-
- A parser and scanner that creates a stack machine for a simple fact and class matching language used on the CLI to facilitate a rich discovery language @@ -90,71 +352,48 @@ language Language EBNF
-compound = ["("] expression [")"] {["("] -expression [")"]} expression = [!|not]statement -["and"|"or"] [!|not] statement char = A-Z | a-z | < -| > | => | =< | _ | - |* | / { A-Z | a-z | < | > | => | -=< | _ | - | * | / | } int = 0|1|2|3|4|5|6|7|8|9{|0|1|2|3|4|5|6|7|8|9|0} +compound = [“(“] expression [“)”] +{[“(“] expression [“)”]} expression = +[!|not]statement [“and”|“or”] [!|not] statement +char = A-Z | a-z | < | > | => | =< | _ | - |* | / { A-Z | a-z | < | > | => +| =< | _ | - | * | / | } int = 0|1|2|3|4|5|6|7|8|9{|0|1|2|3|4|5|6|7|8|9|0}
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-Class MCollective::Matcher::Scanner
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+ Classes and Modules
+ + - Class MCollective::Matcher::Parser-Class MCollective::Matcher::Scanner
+ + -
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+ Public Class Methods
+ +
+
+
+
+
+
+ create_compound_callstack(call_string)
+ click to toggle source
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- Public Class methods
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+ Creates a callstack to be evaluated from a compound evaluation string
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# File lib/mcollective/matcher.rb, line 181
181: def self.create_compound_callstack(call_string)
@@ -165,28 +404,36 @@ Creates a callstack to be evaluated from a compound evaluation string
186: end
187: end
188: callstack
-189: end
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+ create_function_hash(function_call)
+ click to toggle source
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+ Helper creates a hash from a function call string
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# File lib/mcollective/matcher.rb, line 17
17: def self.create_function_hash(function_call)
@@ -247,29 +494,37 @@ Helper creates a hash from a function call string
72: end
73:
74: func_hash
-75: end
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+ eval_compound_fstatement(function_hash)
+ click to toggle source
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+ Returns the result of an evaluated compound statement that includes a function
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# File lib/mcollective/matcher.rb, line 135
135: def self.eval_compound_fstatement(function_hash)
@@ -315,28 +570,36 @@ function
175: result = eval("#{l_compare} #{function_hash["operator"]} #{function_hash["r_compare"]}")
176: (result.nil?) ? false : result
177: end
-178: end
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+ eval_compound_statement(expression)
+ click to toggle source
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+ Evaluates a compound statement
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# File lib/mcollective/matcher.rb, line 115
115: def self.eval_compound_statement(expression)
@@ -355,28 +618,36 @@ Evaluates a compound statement
128: else
129: return Util.has_cf_class?(expression.values.first)
130: end
-131: end
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+ execute_function(function_hash)
+ click to toggle source
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+112: end
+ Returns the result of an executed function
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# File lib/mcollective/matcher.rb, line 78
78: def self.execute_function(function_hash)
@@ -413,22 +684,33 @@ Returns the result of an executed function
109: rescue NoMethodError
110: Log.debug("cannot execute discovery function '#{function_hash["name"]}'. data plugin not found")
111: raise DDLValidationError
-112: end
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