Class: Packcr::Node::PredicateNode
- Inherits:
-
Packcr::Node
- Object
- Packcr::Node
- Packcr::Node::PredicateNode
- Defined in:
- lib/packcr/node/predicate_node.rb
Instance Attribute Summary collapse
-
#expr ⇒ Object
Returns the value of attribute expr.
-
#neg ⇒ Object
Returns the value of attribute neg.
Instance Method Summary collapse
- #debug_dump(indent = 0) ⇒ Object
- #generate_code(gen, onfail, indent, bare) ⇒ Object
-
#initialize ⇒ PredicateNode
constructor
A new instance of PredicateNode.
- #link_references(ctx) ⇒ Object
- #verify_captures(ctx, capts) ⇒ Object
- #verify_variables(vars) ⇒ Object
Constructor Details
#initialize ⇒ PredicateNode
Returns a new instance of PredicateNode.
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# File 'lib/packcr/node/predicate_node.rb', line 6 def initialize super self.neg = false end |
Instance Attribute Details
#expr ⇒ Object
Returns the value of attribute expr.
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# File 'lib/packcr/node/predicate_node.rb', line 4 def expr @expr end |
#neg ⇒ Object
Returns the value of attribute neg.
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# File 'lib/packcr/node/predicate_node.rb', line 4 def neg @neg end |
Instance Method Details
#debug_dump(indent = 0) ⇒ Object
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# File 'lib/packcr/node/predicate_node.rb', line 11 def debug_dump(indent = 0) $stdout.print "#{" " * indent}Predicate(neg:#{neg ? 1 : 0}) {\n" expr.debug_dump(indent + 2) $stdout.print "#{" " * indent}}\n" end |
#generate_code(gen, onfail, indent, bare) ⇒ Object
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# File 'lib/packcr/node/predicate_node.rb', line 17 def generate_code(gen, onfail, indent, ) r = nil if neg l = gen.next_label r, code = gen.generate_code_str(expr, l, 4, false) gen.write Packcr.template("node/predicate_neg.#{gen.lang}.erb", binding, indent: indent, unwrap: ) case r when Packcr::CODE_REACH__ALWAYS_SUCCEED r = Packcr::CODE_REACH__ALWAYS_FAIL when Packcr::CODE_REACH__ALWAYS_FAIL r = Packcr::CODE_REACH__ALWAYS_SUCCEED end else l = gen.next_label m = gen.next_label r, code = gen.generate_code_str(expr, l, 4, false) gen.write Packcr.template("node/predicate.#{gen.lang}.erb", binding, indent: indent, unwrap: ) end return r end |
#link_references(ctx) ⇒ Object
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# File 'lib/packcr/node/predicate_node.rb', line 46 def link_references(ctx) expr.link_references(ctx) end |
#verify_captures(ctx, capts) ⇒ Object
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# File 'lib/packcr/node/predicate_node.rb', line 42 def verify_captures(ctx, capts) expr.verify_captures(ctx, capts) end |
#verify_variables(vars) ⇒ Object
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# File 'lib/packcr/node/predicate_node.rb', line 38 def verify_variables(vars) expr.verify_variables(vars) end |