mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
ec847fad4e
The list of bug fixes/enhancements is at: http://www.germane-software.com/projects/rexml/query?status=closed&milestone=3.1.5 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@10888 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
753 lines
24 KiB
Ruby
753 lines
24 KiB
Ruby
require 'rexml/namespace'
|
|
require 'rexml/xmltokens'
|
|
require 'rexml/attribute'
|
|
require 'rexml/syncenumerator'
|
|
require 'rexml/parsers/xpathparser'
|
|
|
|
class Object
|
|
def dclone
|
|
clone
|
|
end
|
|
end
|
|
class Symbol
|
|
def dclone ; self ; end
|
|
end
|
|
class Fixnum
|
|
def dclone ; self ; end
|
|
end
|
|
class Float
|
|
def dclone ; self ; end
|
|
end
|
|
class Array
|
|
def dclone
|
|
klone = self.clone
|
|
klone.clear
|
|
self.each{|v| klone << v.dclone}
|
|
klone
|
|
end
|
|
end
|
|
|
|
module REXML
|
|
# You don't want to use this class. Really. Use XPath, which is a wrapper
|
|
# for this class. Believe me. You don't want to poke around in here.
|
|
# There is strange, dark magic at work in this code. Beware. Go back! Go
|
|
# back while you still can!
|
|
class XPathParser
|
|
include XMLTokens
|
|
LITERAL = /^'([^']*)'|^"([^"]*)"/u
|
|
|
|
def initialize( )
|
|
@parser = REXML::Parsers::XPathParser.new
|
|
@namespaces = nil
|
|
@variables = {}
|
|
end
|
|
|
|
def namespaces=( namespaces={} )
|
|
Functions::namespace_context = namespaces
|
|
@namespaces = namespaces
|
|
end
|
|
|
|
def variables=( vars={} )
|
|
Functions::variables = vars
|
|
@variables = vars
|
|
end
|
|
|
|
def parse path, nodeset
|
|
#puts "#"*40
|
|
path_stack = @parser.parse( path )
|
|
#puts "PARSE: #{path} => #{path_stack.inspect}"
|
|
#puts "PARSE: nodeset = #{nodeset.inspect}"
|
|
match( path_stack, nodeset )
|
|
end
|
|
|
|
def get_first path, nodeset
|
|
#puts "#"*40
|
|
path_stack = @parser.parse( path )
|
|
#puts "PARSE: #{path} => #{path_stack.inspect}"
|
|
#puts "PARSE: nodeset = #{nodeset.inspect}"
|
|
first( path_stack, nodeset )
|
|
end
|
|
|
|
def predicate path, nodeset
|
|
path_stack = @parser.parse( path )
|
|
expr( path_stack, nodeset )
|
|
end
|
|
|
|
def []=( variable_name, value )
|
|
@variables[ variable_name ] = value
|
|
end
|
|
|
|
|
|
# Performs a depth-first (document order) XPath search, and returns the
|
|
# first match. This is the fastest, lightest way to return a single result.
|
|
#
|
|
# FIXME: This method is incomplete!
|
|
def first( path_stack, node )
|
|
#puts "#{depth}) Entering match( #{path.inspect}, #{tree.inspect} )"
|
|
return nil if path.size == 0
|
|
|
|
case path[0]
|
|
when :document
|
|
# do nothing
|
|
return first( path[1..-1], node )
|
|
when :child
|
|
for c in node.children
|
|
#puts "#{depth}) CHILD checking #{name(c)}"
|
|
r = first( path[1..-1], c )
|
|
#puts "#{depth}) RETURNING #{r.inspect}" if r
|
|
return r if r
|
|
end
|
|
when :qname
|
|
name = path[2]
|
|
#puts "#{depth}) QNAME #{name(tree)} == #{name} (path => #{path.size})"
|
|
if node.name == name
|
|
#puts "#{depth}) RETURNING #{tree.inspect}" if path.size == 3
|
|
return node if path.size == 3
|
|
return first( path[3..-1], node )
|
|
else
|
|
return nil
|
|
end
|
|
when :descendant_or_self
|
|
r = first( path[1..-1], node )
|
|
return r if r
|
|
for c in node.children
|
|
r = first( path, c )
|
|
return r if r
|
|
end
|
|
when :node
|
|
return first( path[1..-1], node )
|
|
when :any
|
|
return first( path[1..-1], node )
|
|
end
|
|
return nil
|
|
end
|
|
|
|
|
|
def match( path_stack, nodeset )
|
|
#puts "MATCH: path_stack = #{path_stack.inspect}"
|
|
#puts "MATCH: nodeset = #{nodeset.inspect}"
|
|
r = expr( path_stack, nodeset )
|
|
#puts "MAIN EXPR => #{r.inspect}"
|
|
r
|
|
end
|
|
|
|
private
|
|
|
|
|
|
# Returns a String namespace for a node, given a prefix
|
|
# The rules are:
|
|
#
|
|
# 1. Use the supplied namespace mapping first.
|
|
# 2. If no mapping was supplied, use the context node to look up the namespace
|
|
def get_namespace( node, prefix )
|
|
if @namespaces
|
|
return @namespaces[prefix] || ''
|
|
else
|
|
return node.namespace( prefix ) if node.node_type == :element
|
|
return ''
|
|
end
|
|
end
|
|
|
|
|
|
# Expr takes a stack of path elements and a set of nodes (either a Parent
|
|
# or an Array and returns an Array of matching nodes
|
|
ALL = [ :attribute, :element, :text, :processing_instruction, :comment ]
|
|
ELEMENTS = [ :element ]
|
|
def expr( path_stack, nodeset, context=nil )
|
|
#puts "#"*15
|
|
#puts "In expr with #{path_stack.inspect}"
|
|
#puts "Returning" if path_stack.length == 0 || nodeset.length == 0
|
|
node_types = ELEMENTS
|
|
return nodeset if path_stack.length == 0 || nodeset.length == 0
|
|
while path_stack.length > 0
|
|
#puts "Path stack = #{path_stack.inspect}"
|
|
#puts "Nodeset is #{nodeset.inspect}"
|
|
case (op = path_stack.shift)
|
|
when :document
|
|
nodeset = [ nodeset[0].root_node ]
|
|
#puts ":document, nodeset = #{nodeset.inspect}"
|
|
|
|
when :qname
|
|
#puts "IN QNAME"
|
|
prefix = path_stack.shift
|
|
name = path_stack.shift
|
|
nodeset.delete_if do |node|
|
|
# FIXME: This DOUBLES the time XPath searches take
|
|
ns = get_namespace( node, prefix )
|
|
#puts "NS = #{ns.inspect}"
|
|
#puts "node.node_type == :element => #{node.node_type == :element}"
|
|
if node.node_type == :element
|
|
#puts "node.name == #{name} => #{node.name == name}"
|
|
if node.name == name
|
|
#puts "node.namespace == #{ns.inspect} => #{node.namespace == ns}"
|
|
end
|
|
end
|
|
!(node.node_type == :element and
|
|
node.name == name and
|
|
node.namespace == ns )
|
|
end
|
|
node_types = ELEMENTS
|
|
|
|
when :any
|
|
#puts "ANY 1: nodeset = #{nodeset.inspect}"
|
|
#puts "ANY 1: node_types = #{node_types.inspect}"
|
|
nodeset.delete_if { |node| !node_types.include?(node.node_type) }
|
|
#puts "ANY 2: nodeset = #{nodeset.inspect}"
|
|
|
|
when :self
|
|
# This space left intentionally blank
|
|
|
|
when :processing_instruction
|
|
target = path_stack.shift
|
|
nodeset.delete_if do |node|
|
|
(node.node_type != :processing_instruction) or
|
|
( target!='' and ( node.target != target ) )
|
|
end
|
|
|
|
when :text
|
|
nodeset.delete_if { |node| node.node_type != :text }
|
|
|
|
when :comment
|
|
nodeset.delete_if { |node| node.node_type != :comment }
|
|
|
|
when :node
|
|
# This space left intentionally blank
|
|
node_types = ALL
|
|
|
|
when :child
|
|
new_nodeset = []
|
|
nt = nil
|
|
for node in nodeset
|
|
nt = node.node_type
|
|
new_nodeset += node.children if nt == :element or nt == :document
|
|
end
|
|
nodeset = new_nodeset
|
|
node_types = ELEMENTS
|
|
|
|
when :literal
|
|
return path_stack.shift
|
|
|
|
when :attribute
|
|
new_nodeset = []
|
|
case path_stack.shift
|
|
when :qname
|
|
prefix = path_stack.shift
|
|
name = path_stack.shift
|
|
for element in nodeset
|
|
if element.node_type == :element
|
|
#puts element.name
|
|
attr = element.attribute( name, get_namespace(element, prefix) )
|
|
new_nodeset << attr if attr
|
|
end
|
|
end
|
|
when :any
|
|
#puts "ANY"
|
|
for element in nodeset
|
|
if element.node_type == :element
|
|
new_nodeset += element.attributes.to_a
|
|
end
|
|
end
|
|
end
|
|
nodeset = new_nodeset
|
|
|
|
when :parent
|
|
#puts "PARENT 1: nodeset = #{nodeset}"
|
|
nodeset = nodeset.collect{|n| n.parent}.compact
|
|
#nodeset = expr(path_stack.dclone, nodeset.collect{|n| n.parent}.compact)
|
|
#puts "PARENT 2: nodeset = #{nodeset.inspect}"
|
|
node_types = ELEMENTS
|
|
|
|
when :ancestor
|
|
new_nodeset = []
|
|
for node in nodeset
|
|
while node.parent
|
|
node = node.parent
|
|
new_nodeset << node unless new_nodeset.include? node
|
|
end
|
|
end
|
|
nodeset = new_nodeset
|
|
node_types = ELEMENTS
|
|
|
|
when :ancestor_or_self
|
|
new_nodeset = []
|
|
for node in nodeset
|
|
if node.node_type == :element
|
|
new_nodeset << node
|
|
while ( node.parent )
|
|
node = node.parent
|
|
new_nodeset << node unless new_nodeset.include? node
|
|
end
|
|
end
|
|
end
|
|
nodeset = new_nodeset
|
|
node_types = ELEMENTS
|
|
|
|
when :predicate
|
|
new_nodeset = []
|
|
subcontext = { :size => nodeset.size }
|
|
pred = path_stack.shift
|
|
nodeset.each_with_index { |node, index|
|
|
subcontext[ :node ] = node
|
|
#puts "PREDICATE SETTING CONTEXT INDEX TO #{index+1}"
|
|
subcontext[ :index ] = index+1
|
|
pc = pred.dclone
|
|
#puts "#{node.hash}) Recursing with #{pred.inspect} and [#{node.inspect}]"
|
|
result = expr( pc, [node], subcontext )
|
|
result = result[0] if result.kind_of? Array and result.length == 1
|
|
#puts "#{node.hash}) Result = #{result.inspect} (#{result.class.name})"
|
|
if result.kind_of? Numeric
|
|
#puts "Adding node #{node.inspect}" if result == (index+1)
|
|
new_nodeset << node if result == (index+1)
|
|
elsif result.instance_of? Array
|
|
#puts "Adding node #{node.inspect}" if result.size > 0
|
|
new_nodeset << node if result.size > 0
|
|
else
|
|
#puts "Adding node #{node.inspect}" if result
|
|
new_nodeset << node if result
|
|
end
|
|
}
|
|
#puts "New nodeset = #{new_nodeset.inspect}"
|
|
#puts "Path_stack = #{path_stack.inspect}"
|
|
nodeset = new_nodeset
|
|
=begin
|
|
predicate = path_stack.shift
|
|
ns = nodeset.clone
|
|
result = expr( predicate, ns )
|
|
#puts "Result = #{result.inspect} (#{result.class.name})"
|
|
#puts "nodeset = #{nodeset.inspect}"
|
|
if result.kind_of? Array
|
|
nodeset = result.zip(ns).collect{|m,n| n if m}.compact
|
|
else
|
|
nodeset = result ? nodeset : []
|
|
end
|
|
#puts "Outgoing NS = #{nodeset.inspect}"
|
|
=end
|
|
|
|
when :descendant_or_self
|
|
rv = descendant_or_self( path_stack, nodeset )
|
|
path_stack.clear
|
|
nodeset = rv
|
|
node_types = ELEMENTS
|
|
|
|
when :descendant
|
|
results = []
|
|
nt = nil
|
|
for node in nodeset
|
|
nt = node.node_type
|
|
results += expr( path_stack.dclone.unshift( :descendant_or_self ),
|
|
node.children ) if nt == :element or nt == :document
|
|
end
|
|
nodeset = results
|
|
node_types = ELEMENTS
|
|
|
|
when :following_sibling
|
|
#puts "FOLLOWING_SIBLING 1: nodeset = #{nodeset}"
|
|
results = []
|
|
for node in nodeset
|
|
all_siblings = node.parent.children
|
|
current_index = all_siblings.index( node )
|
|
following_siblings = all_siblings[ current_index+1 .. -1 ]
|
|
results += expr( path_stack.dclone, following_siblings )
|
|
end
|
|
#puts "FOLLOWING_SIBLING 2: nodeset = #{nodeset}"
|
|
nodeset = results
|
|
|
|
when :preceding_sibling
|
|
results = []
|
|
for node in nodeset
|
|
all_siblings = node.parent.children
|
|
current_index = all_siblings.index( node )
|
|
preceding_siblings = all_siblings[ 0 .. current_index-1 ].reverse
|
|
#results += expr( path_stack.dclone, preceding_siblings )
|
|
end
|
|
nodeset = preceding_siblings || []
|
|
node_types = ELEMENTS
|
|
|
|
when :preceding
|
|
new_nodeset = []
|
|
for node in nodeset
|
|
new_nodeset += preceding( node )
|
|
end
|
|
#puts "NEW NODESET => #{new_nodeset.inspect}"
|
|
nodeset = new_nodeset
|
|
node_types = ELEMENTS
|
|
|
|
when :following
|
|
new_nodeset = []
|
|
for node in nodeset
|
|
new_nodeset += following( node )
|
|
end
|
|
nodeset = new_nodeset
|
|
node_types = ELEMENTS
|
|
|
|
when :namespace
|
|
new_set = []
|
|
for node in nodeset
|
|
new_nodeset << node.namespace if node.node_type == :element or node.node_type == :attribute
|
|
end
|
|
nodeset = new_nodeset
|
|
|
|
when :variable
|
|
var_name = path_stack.shift
|
|
return @variables[ var_name ]
|
|
|
|
# :and, :or, :eq, :neq, :lt, :lteq, :gt, :gteq
|
|
# TODO: Special case for :or and :and -- not evaluate the right
|
|
# operand if the left alone determines result (i.e. is true for
|
|
# :or and false for :and).
|
|
when :eq, :neq, :lt, :lteq, :gt, :gteq, :and, :or
|
|
left = expr( path_stack.shift, nodeset.dup, context )
|
|
#puts "LEFT => #{left.inspect} (#{left.class.name})"
|
|
right = expr( path_stack.shift, nodeset.dup, context )
|
|
#puts "RIGHT => #{right.inspect} (#{right.class.name})"
|
|
res = equality_relational_compare( left, op, right )
|
|
#puts "RES => #{res.inspect}"
|
|
return res
|
|
|
|
when :div
|
|
left = Functions::number(expr(path_stack.shift, nodeset, context)).to_f
|
|
right = Functions::number(expr(path_stack.shift, nodeset, context)).to_f
|
|
return (left / right)
|
|
|
|
when :mod
|
|
left = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
right = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
return (left % right)
|
|
|
|
when :mult
|
|
left = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
right = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
return (left * right)
|
|
|
|
when :plus
|
|
left = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
right = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
return (left + right)
|
|
|
|
when :minus
|
|
left = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
right = Functions::number(expr(path_stack.shift, nodeset, context )).to_f
|
|
return (left - right)
|
|
|
|
when :union
|
|
left = expr( path_stack.shift, nodeset, context )
|
|
right = expr( path_stack.shift, nodeset, context )
|
|
return (left | right)
|
|
|
|
when :neg
|
|
res = expr( path_stack, nodeset, context )
|
|
return -(res.to_f)
|
|
|
|
when :not
|
|
when :function
|
|
func_name = path_stack.shift.tr('-','_')
|
|
arguments = path_stack.shift
|
|
#puts "FUNCTION 0: #{func_name}(#{arguments.collect{|a|a.inspect}.join(', ')})"
|
|
subcontext = context ? nil : { :size => nodeset.size }
|
|
|
|
res = []
|
|
cont = context
|
|
nodeset.each_with_index { |n, i|
|
|
if subcontext
|
|
subcontext[:node] = n
|
|
subcontext[:index] = i
|
|
cont = subcontext
|
|
end
|
|
arg_clone = arguments.dclone
|
|
args = arg_clone.collect { |arg|
|
|
#puts "FUNCTION 1: Calling expr( #{arg.inspect}, [#{n.inspect}] )"
|
|
expr( arg, [n], cont )
|
|
}
|
|
#puts "FUNCTION 2: #{func_name}(#{args.collect{|a|a.inspect}.join(', ')})"
|
|
Functions.context = cont
|
|
res << Functions.send( func_name, *args )
|
|
#puts "FUNCTION 3: #{res[-1].inspect}"
|
|
}
|
|
return res
|
|
|
|
end
|
|
end # while
|
|
#puts "EXPR returning #{nodeset.inspect}"
|
|
return nodeset
|
|
end
|
|
|
|
|
|
##########################################################
|
|
# FIXME
|
|
# The next two methods are BAD MOJO!
|
|
# This is my achilles heel. If anybody thinks of a better
|
|
# way of doing this, be my guest. This really sucks, but
|
|
# it took me three days to get it to work at all.
|
|
# ########################################################
|
|
|
|
def descendant_or_self( path_stack, nodeset )
|
|
rs = []
|
|
#puts "#"*80
|
|
#puts "PATH_STACK = #{path_stack.inspect}"
|
|
#puts "NODESET = #{nodeset.collect{|n|n.inspect}.inspect}"
|
|
d_o_s( path_stack, nodeset, rs )
|
|
#puts "RS = #{rs.collect{|n|n.inspect}.inspect}"
|
|
document_order(rs.flatten.compact)
|
|
#rs.flatten.compact
|
|
end
|
|
|
|
def d_o_s( p, ns, r )
|
|
#puts "IN DOS with #{ns.inspect}; ALREADY HAVE #{r.inspect}"
|
|
nt = nil
|
|
ns.each_index do |i|
|
|
n = ns[i]
|
|
#puts "P => #{p.inspect}"
|
|
x = expr( p.dclone, [ n ] )
|
|
nt = n.node_type
|
|
d_o_s( p, n.children, x ) if nt == :element or nt == :document and n.children.size > 0
|
|
r.concat(x) if x.size > 0
|
|
end
|
|
end
|
|
|
|
|
|
# Reorders an array of nodes so that they are in document order
|
|
# It tries to do this efficiently.
|
|
#
|
|
# FIXME: I need to get rid of this, but the issue is that most of the XPath
|
|
# interpreter functions as a filter, which means that we lose context going
|
|
# in and out of function calls. If I knew what the index of the nodes was,
|
|
# I wouldn't have to do this. Maybe add a document IDX for each node?
|
|
# Problems with mutable documents. Or, rewrite everything.
|
|
def document_order( array_of_nodes )
|
|
new_arry = []
|
|
array_of_nodes.each { |node|
|
|
node_idx = []
|
|
np = node.node_type == :attribute ? node.element : node
|
|
while np.parent and np.parent.node_type == :element
|
|
node_idx << np.parent.index( np )
|
|
np = np.parent
|
|
end
|
|
new_arry << [ node_idx.reverse, node ]
|
|
}
|
|
#puts "new_arry = #{new_arry.inspect}"
|
|
new_arry.sort{ |s1, s2| s1[0] <=> s2[0] }.collect{ |s| s[1] }
|
|
end
|
|
|
|
|
|
def recurse( nodeset, &block )
|
|
for node in nodeset
|
|
yield node
|
|
recurse( node, &block ) if node.node_type == :element
|
|
end
|
|
end
|
|
|
|
|
|
|
|
# Builds a nodeset of all of the preceding nodes of the supplied node,
|
|
# in reverse document order
|
|
# preceding:: includes every element in the document that precedes this node,
|
|
# except for ancestors
|
|
def preceding( node )
|
|
#puts "IN PRECEDING"
|
|
ancestors = []
|
|
p = node.parent
|
|
while p
|
|
ancestors << p
|
|
p = p.parent
|
|
end
|
|
|
|
acc = []
|
|
p = preceding_node_of( node )
|
|
#puts "P = #{p.inspect}"
|
|
while p
|
|
if ancestors.include? p
|
|
ancestors.delete(p)
|
|
else
|
|
acc << p
|
|
end
|
|
p = preceding_node_of( p )
|
|
#puts "P = #{p.inspect}"
|
|
end
|
|
acc
|
|
end
|
|
|
|
def preceding_node_of( node )
|
|
#puts "NODE: #{node.inspect}"
|
|
#puts "PREVIOUS NODE: #{node.previous_sibling_node.inspect}"
|
|
#puts "PARENT NODE: #{node.parent}"
|
|
psn = node.previous_sibling_node
|
|
if psn.nil?
|
|
if node.parent.nil? or node.parent.class == Document
|
|
return nil
|
|
end
|
|
return node.parent
|
|
#psn = preceding_node_of( node.parent )
|
|
end
|
|
while psn and psn.kind_of? Element and psn.children.size > 0
|
|
psn = psn.children[-1]
|
|
end
|
|
psn
|
|
end
|
|
|
|
def following( node )
|
|
#puts "IN PRECEDING"
|
|
acc = []
|
|
p = next_sibling_node( node )
|
|
#puts "P = #{p.inspect}"
|
|
while p
|
|
acc << p
|
|
p = following_node_of( p )
|
|
#puts "P = #{p.inspect}"
|
|
end
|
|
acc
|
|
end
|
|
|
|
def following_node_of( node )
|
|
#puts "NODE: #{node.inspect}"
|
|
#puts "PREVIOUS NODE: #{node.previous_sibling_node.inspect}"
|
|
#puts "PARENT NODE: #{node.parent}"
|
|
if node.kind_of? Element and node.children.size > 0
|
|
return node.children[0]
|
|
end
|
|
return next_sibling_node(node)
|
|
end
|
|
|
|
def next_sibling_node(node)
|
|
psn = node.next_sibling_node
|
|
while psn.nil?
|
|
if node.parent.nil? or node.parent.class == Document
|
|
return nil
|
|
end
|
|
node = node.parent
|
|
psn = node.next_sibling_node
|
|
#puts "psn = #{psn.inspect}"
|
|
end
|
|
return psn
|
|
end
|
|
|
|
def norm b
|
|
case b
|
|
when true, false
|
|
return b
|
|
when 'true', 'false'
|
|
return Functions::boolean( b )
|
|
when /^\d+(\.\d+)?$/
|
|
return Functions::number( b )
|
|
else
|
|
return Functions::string( b )
|
|
end
|
|
end
|
|
|
|
def equality_relational_compare( set1, op, set2 )
|
|
#puts "EQ_REL_COMP(#{set1.inspect} #{op.inspect} #{set2.inspect})"
|
|
if set1.kind_of? Array and set2.kind_of? Array
|
|
#puts "#{set1.size} & #{set2.size}"
|
|
if set1.size == 1 and set2.size == 1
|
|
set1 = set1[0]
|
|
set2 = set2[0]
|
|
elsif set1.size == 0 or set2.size == 0
|
|
nd = set1.size==0 ? set2 : set1
|
|
rv = nd.collect { |il| compare( il, op, nil ) }
|
|
#puts "RV = #{rv.inspect}"
|
|
return rv
|
|
else
|
|
res = []
|
|
enum = SyncEnumerator.new( set1, set2 ).each { |i1, i2|
|
|
#puts "i1 = #{i1.inspect} (#{i1.class.name})"
|
|
#puts "i2 = #{i2.inspect} (#{i2.class.name})"
|
|
i1 = norm( i1 )
|
|
i2 = norm( i2 )
|
|
res << compare( i1, op, i2 )
|
|
}
|
|
return res
|
|
end
|
|
end
|
|
#puts "EQ_REL_COMP: #{set1.inspect} (#{set1.class.name}), #{op}, #{set2.inspect} (#{set2.class.name})"
|
|
#puts "COMPARING VALUES"
|
|
# If one is nodeset and other is number, compare number to each item
|
|
# in nodeset s.t. number op number(string(item))
|
|
# If one is nodeset and other is string, compare string to each item
|
|
# in nodeset s.t. string op string(item)
|
|
# If one is nodeset and other is boolean, compare boolean to each item
|
|
# in nodeset s.t. boolean op boolean(item)
|
|
if set1.kind_of? Array or set2.kind_of? Array
|
|
#puts "ISA ARRAY"
|
|
if set1.kind_of? Array
|
|
a = set1
|
|
b = set2
|
|
else
|
|
a = set2
|
|
b = set1
|
|
end
|
|
|
|
case b
|
|
when true, false
|
|
return a.collect {|v| compare( Functions::boolean(v), op, b ) }
|
|
when Numeric
|
|
return a.collect {|v| compare( Functions::number(v), op, b )}
|
|
when /^\d+(\.\d+)?$/
|
|
b = Functions::number( b )
|
|
#puts "B = #{b.inspect}"
|
|
return a.collect {|v| compare( Functions::number(v), op, b )}
|
|
else
|
|
#puts "Functions::string( #{b}(#{b.class.name}) ) = #{Functions::string(b)}"
|
|
b = Functions::string( b )
|
|
return a.collect { |v| compare( Functions::string(v), op, b ) }
|
|
end
|
|
else
|
|
# If neither is nodeset,
|
|
# If op is = or !=
|
|
# If either boolean, convert to boolean
|
|
# If either number, convert to number
|
|
# Else, convert to string
|
|
# Else
|
|
# Convert both to numbers and compare
|
|
s1 = set1.to_s
|
|
s2 = set2.to_s
|
|
#puts "EQ_REL_COMP: #{set1}=>#{s1}, #{set2}=>#{s2}"
|
|
if s1 == 'true' or s1 == 'false' or s2 == 'true' or s2 == 'false'
|
|
#puts "Functions::boolean(#{set1})=>#{Functions::boolean(set1)}"
|
|
#puts "Functions::boolean(#{set2})=>#{Functions::boolean(set2)}"
|
|
set1 = Functions::boolean( set1 )
|
|
set2 = Functions::boolean( set2 )
|
|
else
|
|
if op == :eq or op == :neq
|
|
if s1 =~ /^\d+(\.\d+)?$/ or s2 =~ /^\d+(\.\d+)?$/
|
|
set1 = Functions::number( s1 )
|
|
set2 = Functions::number( s2 )
|
|
else
|
|
set1 = Functions::string( set1 )
|
|
set2 = Functions::string( set2 )
|
|
end
|
|
else
|
|
set1 = Functions::number( set1 )
|
|
set2 = Functions::number( set2 )
|
|
end
|
|
end
|
|
#puts "EQ_REL_COMP: #{set1} #{op} #{set2}"
|
|
#puts ">>> #{compare( set1, op, set2 )}"
|
|
return compare( set1, op, set2 )
|
|
end
|
|
return false
|
|
end
|
|
|
|
def compare a, op, b
|
|
#puts "COMPARE #{a.inspect}(#{a.class.name}) #{op} #{b.inspect}(#{b.class.name})"
|
|
case op
|
|
when :eq
|
|
a == b
|
|
when :neq
|
|
a != b
|
|
when :lt
|
|
a < b
|
|
when :lteq
|
|
a <= b
|
|
when :gt
|
|
a > b
|
|
when :gteq
|
|
a >= b
|
|
when :and
|
|
a and b
|
|
when :or
|
|
a or b
|
|
else
|
|
false
|
|
end
|
|
end
|
|
end
|
|
end
|