Sha256: cfb7e003279782110c03c8ff4dd7c4b620489ba6f9ba74f90de741216c8ec0b4
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Size: 1.6 KB
Versions: 8
Compression:
Stored size: 1.6 KB
Contents
module Treetop
module Compiler
class ParsingRule < Runtime::SyntaxNode
def compile(builder)
compile_inline_module_declarations(builder)
generate_method_definition(builder)
end
def compile_inline_module_declarations(builder)
parsing_expression.inline_modules.each_with_index do |inline_module, i|
inline_module.compile(i, builder, self)
builder.newline
end
end
def generate_method_definition(builder)
builder.reset_addresses
expression_address = builder.next_address
result_var = "r#{expression_address}"
builder.method_declaration(method_name) do
builder.assign 'start_index', 'index'
generate_cache_lookup(builder)
builder.newline
parsing_expression.compile(expression_address, builder)
builder.newline
generate_cache_storage(builder, result_var)
builder.newline
builder << "return #{result_var}"
end
end
def generate_cache_lookup(builder)
builder.if_ "node_cache[:#{name}].has_key?(index)" do
builder.assign 'cached', "node_cache[:#{name}][index]"
builder << '@index = cached.interval.end if cached'
builder << 'return cached'
end
end
def generate_cache_storage(builder, result_var)
builder.assign "node_cache[:#{name}][start_index]", result_var
end
def method_name
"_nt_#{name}"
end
def name
nonterminal.text_value
end
end
end
end
Version data entries
8 entries across 8 versions & 4 rubygems