DesugarCompiler
is a compiler that desugars Ruby code into a more primitive form. This is useful for consumers that want to deal with fewer node types.
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 145
def desugar_and_write_node(node, read_class, write_class, *arguments)
AndNode.new(
read_class.new(*arguments, node.name_loc),
write_class.new(*arguments, node.name_loc, node.value, node.operator_loc, node.location),
node.operator_loc,
node.location
)
end
Desugar ‘x &&= y` to `x && x = y`
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 155
def desugar_operator_write_node(node, read_class, write_class, *arguments)
write_class.new(
*arguments,
node.name_loc,
CallNode.new(
0,
read_class.new(*arguments, node.name_loc),
nil,
node.operator_loc.slice.chomp("="),
node.operator_loc.copy(length: node.operator_loc.length - 1),
nil,
ArgumentsNode.new(0, [node.value], node.value.location),
nil,
nil,
node.location
),
node.operator_loc.copy(start_offset: node.operator_loc.end_offset - 1, length: 1),
node.location
)
end
Desugar ‘x += y` to `x = x + y`
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 187
def desugar_or_write_defined_node(node, read_class, write_class, *arguments)
IfNode.new(
node.operator_loc,
DefinedNode.new(nil, read_class.new(*arguments, node.name_loc), nil, node.operator_loc, node.name_loc),
node.operator_loc,
StatementsNode.new([read_class.new(*arguments, node.name_loc)], node.location),
ElseNode.new(
node.operator_loc,
StatementsNode.new(
[write_class.new(*arguments, node.name_loc, node.value, node.operator_loc, node.location)],
node.location
),
node.operator_loc,
node.location
),
node.operator_loc,
node.location
)
end
Desugar ‘x ||= y` to `defined?(x) ? x : x = y`
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 177
def desugar_or_write_node(node, read_class, write_class, *arguments)
OrNode.new(
read_class.new(*arguments, node.name_loc),
write_class.new(*arguments, node.name_loc, node.value, node.operator_loc, node.location),
node.operator_loc,
node.location
)
end
Desugar ‘x ||= y` to `x || x = y`
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 12
def visit_class_variable_and_write_node(node)
desugar_and_write_node(node, ClassVariableReadNode, ClassVariableWriteNode, node.name)
end
@@foo &&= bar
becomes
@@foo && @@foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 30
def visit_class_variable_operator_write_node(node)
desugar_operator_write_node(node, ClassVariableReadNode, ClassVariableWriteNode, node.name)
end
@@foo += bar
becomes
@@foo = @@foo + bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 21
def visit_class_variable_or_write_node(node)
desugar_or_write_defined_node(node, ClassVariableReadNode, ClassVariableWriteNode, node.name)
end
@@foo ||= bar
becomes
defined?(@@foo) ? @@foo : @@foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 39
def visit_constant_and_write_node(node)
desugar_and_write_node(node, ConstantReadNode, ConstantWriteNode, node.name)
end
Foo &&= bar
becomes
Foo && Foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 57
def visit_constant_operator_write_node(node)
desugar_operator_write_node(node, ConstantReadNode, ConstantWriteNode, node.name)
end
Foo += bar
becomes
Foo = Foo + bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 48
def visit_constant_or_write_node(node)
desugar_or_write_defined_node(node, ConstantReadNode, ConstantWriteNode, node.name)
end
Foo ||= bar
becomes
defined?(Foo) ? Foo : Foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 66
def visit_global_variable_and_write_node(node)
desugar_and_write_node(node, GlobalVariableReadNode, GlobalVariableWriteNode, node.name)
end
$foo &&= bar
becomes
$foo && $foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 84
def visit_global_variable_operator_write_node(node)
desugar_operator_write_node(node, GlobalVariableReadNode, GlobalVariableWriteNode, node.name)
end
$foo += bar
becomes
$foo = $foo + bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 75
def visit_global_variable_or_write_node(node)
desugar_or_write_defined_node(node, GlobalVariableReadNode, GlobalVariableWriteNode, node.name)
end
$foo ||= bar
becomes
defined?($foo) ? $foo : $foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 93
def visit_instance_variable_and_write_node(node)
desugar_and_write_node(node, InstanceVariableReadNode, InstanceVariableWriteNode, node.name)
end
@foo &&= bar
becomes
@foo && @foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 111
def visit_instance_variable_operator_write_node(node)
desugar_operator_write_node(node, InstanceVariableReadNode, InstanceVariableWriteNode, node.name)
end
@foo += bar
becomes
@foo = @foo + bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 102
def visit_instance_variable_or_write_node(node)
desugar_or_write_node(node, InstanceVariableReadNode, InstanceVariableWriteNode, node.name)
end
@foo ||= bar
becomes
@foo || @foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 120
def visit_local_variable_and_write_node(node)
desugar_and_write_node(node, LocalVariableReadNode, LocalVariableWriteNode, node.name, node.depth)
end
foo &&= bar
becomes
foo && foo = bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 138
def visit_local_variable_operator_write_node(node)
desugar_operator_write_node(node, LocalVariableReadNode, LocalVariableWriteNode, node.name, node.depth)
end
foo += bar
becomes
foo = foo + bar
# File tmp/rubies/ruby-3.3.0/lib/prism/desugar_compiler.rb, line 129
def visit_local_variable_or_write_node(node)
desugar_or_write_node(node, LocalVariableReadNode, LocalVariableWriteNode, node.name, node.depth)
end
foo ||= bar
becomes
foo || foo = bar