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Versions: 262
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Stored size: 1.43 KB
Contents
require 'spec_helper'
module ParsingRuleSpec
describe "a grammar with one parsing rule" do
testing_grammar %{
grammar Foo
rule bar
"baz"
end
end
}
it "stores and retrieves nodes in its node cache" do
parser = self.class.const_get(:FooParser).new
parser.send(:prepare_to_parse, 'baz')
node_cache = parser.send(:node_cache)
node_cache[:bar][0].should be_nil
parser._nt_bar
cached_node = node_cache[:bar][0]
cached_node.should be_an_instance_of(Runtime::SyntaxNode)
cached_node.text_value.should == 'baz'
parser.instance_eval { @index = 0 }
parser._nt_bar.should equal(cached_node)
parser.index.should == cached_node.interval.end
end
end
describe "a grammar with choice that uses the cache and has a subsequent expression" do
testing_grammar %{
grammar Logic
rule expression
value_plus
/
value
end
rule value_plus
value "something else"
end
rule value
[a-z]
/
"foobar" # the subsequent expression that needs cached.interval.end
end
end
}
it "parses a single-character value and generates a node from the cache" do
result = parse('a')
result.should be_a(Treetop::Runtime::SyntaxNode)
result.elements.should be_nil
end
end
end
Version data entries
262 entries across 217 versions & 32 rubygems