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Contents
module Ruby2JS
class Converter
# (and
# (...)
# (...))
# (or
# (...)
# (...))
# Note: not handled below
# (...))
handle :and, :or do |left, right|
type = @ast.type
op_index = operator_index type
lgroup = LOGICAL.include?( left.type ) &&
op_index < operator_index( left.type )
lgroup = true if left and left.type == :begin
left = parse left
left = "(#{ left })" if lgroup
rgroup = LOGICAL.include?( right.type ) &&
op_index < operator_index( right.type )
rgroup = true if right.type == :begin
right = parse right
right = "(#{ right })" if rgroup
"#{ left } #{ type==:and ? '&&' : '||' } #{ right }"
end
# (not
# (...))
handle :not do |expr|
if expr.type == :send and INVERT_OP.include? expr.children[1]
parse(s(:send, expr.children[0], INVERT_OP[expr.children[1]],
expr.children[2]))
elsif expr.type == :defined?
parse s(:undefined?, *expr.children)
elsif expr.type == :or
parse s(:and, s(:not, expr.children[0]), s(:not, expr.children[1]))
elsif expr.type == :and
parse s(:or, s(:not, expr.children[0]), s(:not, expr.children[1]))
else
group = LOGICAL.include?( expr.type ) &&
operator_index( :not ) < operator_index( expr.type )
group = true if expr and expr.type == :begin
expr = parse expr
expr = "(#{ expr })" if group
"!#{ expr }"
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems