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# File 'lib/amber/languages/math/compiler.rb', line 13
def Compiler.compile tree
if tree.is_a? Array
compile(tree.first)
elsif tree.is_a? Hash
case tree[:type]
when :number
Interpreter.const(:number, tree[:number])
when :function
params = tree[:params].map {|p| compile(p)}
case tree[:op]
when '-'
CoreCall.new :neg, params
else
FunctionCall.new tree[:op], params
end
when :ident
Interpreter::Variable.new(Interpreter.const(:string, tree[:ident]))
when :op
case tree[:op]
when ';'
s = Interpreter::Sequence.new()
if (tree[:left][:type] == :op) and (tree[:left][:op] == ';')
s += compile(tree[:left])
else
s << compile(tree[:left])
end
if (tree[:right][:type] == :op) and (tree[:right][:op] == ';')
s += compile(tree[:right])
else
s << compile(tree[:right])
end
when '='
case tree[:left][:type]
when :ident
Interpreter::Assignment.new(Interpreter.const(:string, tree[:left][:ident]),compile(tree[:right]))
when :function
body = Interpreter::Sequence.new()
i = 0
tree[:left][:params].each do |p|
raise ArgumentError, "Bad ype for a function parameter: #{p[:type]} " if p[:type] != :ident
body << Interpreter::Assignment.new(Interpreter.const(:string, p[:ident]), Interpreter::Parameter.new(Interpreter.const(:number, i)))
i += 1
end
body << compile(tree[:right])
Interpreter::FunctionDefinition.new(Interpreter.const(:string, tree[:left][:op]), AmberVM::Classes::Block.new(body))
else
raise ArgumentError, "Bad name for a variable!"
end
else
CoreCall.new(FUNCTION_MAP[tree[:op]], [compile(tree[:left]),compile(tree[:right])])
end
end
end
end
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