class Prism::Translation::RubyParser::Compiler
一个构建 Sexp 对象的 prism 访问器。
属性
这是我们正在编译的文件的名称。我们在每个生成的 Sexp 对象上设置它,并用它来编译 __FILE__ 节点。
类变量的类型会根据它们是否在方法定义内部而改变,因此我们需要跟踪该状态。
一些节点在模式内部时会改变它们的表示形式,因此我们需要跟踪该状态。
Public Class Methods
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# File lib/prism/translation/ruby_parser.rb, line 37 def initialize(file, in_def: false, in_pattern: false) @file = file @in_def = in_def @in_pattern = in_pattern end
使用给定的文件名初始化一个新的编译器。
Public Instance Methods
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# File lib/prism/translation/ruby_parser.rb, line 55 def visit_alias_global_variable_node(node) s(node, :valias, node.new_name.name, node.old_name.name) end
alias $foo $bar ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 47 def visit_alias_method_node(node) s(node, :alias, visit(node.new_name), visit(node.old_name)) end
alias foo bar ^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 63 def visit_alternation_pattern_node(node) s(node, :or, visit(node.left), visit(node.right)) end
foo => bar | baz
^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 71 def visit_and_node(node) left = visit(node.left) if left[0] == :and # ruby_parser has the and keyword as right-associative as opposed to # prism which has it as left-associative. We reverse that # associativity here. nest = left nest = nest[2] while nest[2][0] == :and nest[2] = s(node, :and, nest[2], visit(node.right)) left else s(node, :and, left, visit(node.right)) end end
a and b ^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 128 def visit_arguments_node(node) raise "Cannot visit arguments directly" end
foo(bar)
^^^
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# File lib/prism/translation/ruby_parser.rb, line 91 def visit_array_node(node) if in_pattern s(node, :array_pat, nil).concat(visit_all(node.elements)) else s(node, :array).concat(visit_all(node.elements)) end end
[] ^^
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# File lib/prism/translation/ruby_parser.rb, line 103 def visit_array_pattern_node(node) if node.constant.nil? && node.requireds.empty? && node.rest.nil? && node.posts.empty? s(node, :array_pat) else result = s(node, :array_pat, visit_pattern_constant(node.constant)).concat(visit_all(node.requireds)) case node.rest when SplatNode result << :"*#{node.rest.expression&.name}" when ImplicitRestNode result << :* # This doesn't make any sense at all, but since we're trying to # replicate the behavior directly, we'll copy it. result.line(666) end result.concat(visit_all(node.posts)) end end
foo => [bar]
^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 136 def visit_assoc_node(node) [visit(node.key), visit(node.value)] end
{ a: 1 }
^^^^
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# File lib/prism/translation/ruby_parser.rb, line 147 def visit_assoc_splat_node(node) if node.value.nil? [s(node, :kwsplat)] else [s(node, :kwsplat, visit(node.value))] end end
def foo(**); bar(**); end
^^
{ **foo }
^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 159 def visit_back_reference_read_node(node) s(node, :back_ref, node.name.to_s.delete_prefix("$").to_sym) end
$+ ^^
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# File lib/prism/translation/ruby_parser.rb, line 167 def visit_begin_node(node) result = node.statements.nil? ? s(node, :nil) : visit(node.statements) if !node.rescue_clause.nil? if !node.statements.nil? result = s(node.statements, :rescue, result, visit(node.rescue_clause)) else result = s(node.rescue_clause, :rescue, visit(node.rescue_clause)) end current = node.rescue_clause until (current = current.subsequent).nil? result << visit(current) end end if !node.else_clause&.statements.nil? result << visit(node.else_clause) end if !node.ensure_clause.nil? if !node.statements.nil? || !node.rescue_clause.nil? || !node.else_clause.nil? result = s(node.statements || node.rescue_clause || node.else_clause || node.ensure_clause, :ensure, result, visit(node.ensure_clause)) else result = s(node.ensure_clause, :ensure, visit(node.ensure_clause)) end end result end
begin end ^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 202 def visit_block_argument_node(node) s(node, :block_pass).tap do |result| result << visit(node.expression) unless node.expression.nil? end end
foo(&bar)
^^^^
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# File lib/prism/translation/ruby_parser.rb, line 212 def visit_block_local_variable_node(node) node.name end
foo { |; bar| }
^^^
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# File lib/prism/translation/ruby_parser.rb, line 217 def visit_block_node(node) s(node, :block_pass, visit(node.expression)) end
关键字或方法调用上的一个块。
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# File lib/prism/translation/ruby_parser.rb, line 225 def visit_block_parameter_node(node) :"&#{node.name}" end
def foo(&bar); end
^^^^
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# File lib/prism/translation/ruby_parser.rb, line 230 def visit_block_parameters_node(node) # If this block parameters has no parameters and is using pipes, then # it inherits its location from its shadow locals, even if they're not # on the same lines as the pipes. shadow_loc = true result = if node.parameters.nil? s(node, :args) else shadow_loc = false visit(node.parameters) end if node.opening == "(" result.line = node.opening_loc.start_line result.line_max = node.closing_loc.end_line shadow_loc = false end if node.locals.any? shadow = s(node, :shadow).concat(visit_all(node.locals)) shadow.line = node.locals.first.location.start_line shadow.line_max = node.locals.last.location.end_line result << shadow if shadow_loc result.line = shadow.line result.line_max = shadow.line_max end end result end
一个块的参数。
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# File lib/prism/translation/ruby_parser.rb, line 272 def visit_break_node(node) if node.arguments.nil? s(node, :break) elsif node.arguments.arguments.length == 1 s(node, :break, visit(node.arguments.arguments.first)) else s(node, :break, s(node.arguments, :array).concat(visit_all(node.arguments.arguments))) end end
break ^^^^^ break foo ^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 346 def visit_call_and_write_node(node) if op_asgn?(node) s(node, op_asgn_type(node, :op_asgn), visit(node.receiver), visit_write_value(node.value), node.read_name, :"&&") else s(node, op_asgn_type(node, :op_asgn2), visit(node.receiver), node.write_name, :"&&", visit_write_value(node.value)) end end
foo.bar &&= baz ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 292 def visit_call_node(node) case node.name when :!~ return s(node, :not, visit(node.copy(name: :"=~"))) when :=~ if node.arguments&.arguments&.length == 1 && node.block.nil? case node.receiver when StringNode return s(node, :match3, visit(node.arguments.arguments.first), visit(node.receiver)) when RegularExpressionNode, InterpolatedRegularExpressionNode return s(node, :match2, visit(node.receiver), visit(node.arguments.arguments.first)) end case node.arguments.arguments.first when RegularExpressionNode, InterpolatedRegularExpressionNode return s(node, :match3, visit(node.arguments.arguments.first), visit(node.receiver)) end end end type = node.attribute_write? ? :attrasgn : :call type = :"safe_#{type}" if node.safe_navigation? arguments = node.arguments&.arguments || [] write_value = arguments.pop if type == :attrasgn block = node.block if block.is_a?(BlockArgumentNode) arguments << block block = nil end result = s(node, type, visit(node.receiver), node.name).concat(visit_all(arguments)) result << visit_write_value(write_value) unless write_value.nil? visit_block(node, result, block) end
foo
^^^
foo.bar
^^^^^^^
foo.bar() {}
^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 334 def visit_call_operator_write_node(node) if op_asgn?(node) s(node, op_asgn_type(node, :op_asgn), visit(node.receiver), visit_write_value(node.value), node.read_name, node.binary_operator) else s(node, op_asgn_type(node, :op_asgn2), visit(node.receiver), node.write_name, node.binary_operator, visit_write_value(node.value)) end end
foo.bar += baz ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 358 def visit_call_or_write_node(node) if op_asgn?(node) s(node, op_asgn_type(node, :op_asgn), visit(node.receiver), visit_write_value(node.value), node.read_name, :"||") else s(node, op_asgn_type(node, :op_asgn2), visit(node.receiver), node.write_name, :"||", visit_write_value(node.value)) end end
foo.bar ||= baz ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 383 def visit_call_target_node(node) s(node, :attrasgn, visit(node.receiver), node.name) end
foo.bar, = 1 ^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 391 def visit_capture_pattern_node(node) visit(node.target) << visit(node.value) end
foo => bar => baz
^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 407 def visit_case_match_node(node) s(node, :case, visit(node.predicate)).concat(visit_all(node.conditions)) << visit(node.else_clause) end
case foo; in bar; end ^^^^^^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 399 def visit_case_node(node) s(node, :case, visit(node.predicate)).concat(visit_all(node.conditions)) << visit(node.else_clause) end
case foo; when bar; end ^^^^^^^^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 415 def visit_class_node(node) name = if node.constant_path.is_a?(ConstantReadNode) node.name else visit(node.constant_path) end result = if node.body.nil? s(node, :class, name, visit(node.superclass)) elsif node.body.is_a?(StatementsNode) compiler = copy_compiler(in_def: false) s(node, :class, name, visit(node.superclass)).concat(node.body.body.map { |child| child.accept(compiler) }) else s(node, :class, name, visit(node.superclass), node.body.accept(copy_compiler(in_def: false))) end attach_comments(result, node) result end
class Foo; end ^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 468 def visit_class_variable_and_write_node(node) s(node, :op_asgn_and, s(node, :cvar, node.name), s(node, class_variable_write_type, node.name, visit_write_value(node.value))) end
@@foo &&= bar ^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 460 def visit_class_variable_operator_write_node(node) s(node, class_variable_write_type, node.name, s(node, :call, s(node, :cvar, node.name), node.binary_operator, visit_write_value(node.value))) end
@@foo += bar ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 476 def visit_class_variable_or_write_node(node) s(node, :op_asgn_or, s(node, :cvar, node.name), s(node, class_variable_write_type, node.name, visit_write_value(node.value))) end
@@foo ||= bar ^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 441 def visit_class_variable_read_node(node) s(node, :cvar, node.name) end
@@foo ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 484 def visit_class_variable_target_node(node) s(node, class_variable_write_type, node.name) end
@@foo, = bar ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 452 def visit_class_variable_write_node(node) s(node, class_variable_write_type, node.name, visit_write_value(node.value)) end
@@foo = 1 ^^^^^^^^^ @@foo, @@bar = 1 ^^^^^ ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 525 def visit_constant_and_write_node(node) s(node, :op_asgn_and, s(node, :const, node.name), s(node, :cdecl, node.name, visit(node.value))) end
Foo &&= bar ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 517 def visit_constant_operator_write_node(node) s(node, :cdecl, node.name, s(node, :call, s(node, :const, node.name), node.binary_operator, visit_write_value(node.value))) end
Foo += bar ^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 533 def visit_constant_or_write_node(node) s(node, :op_asgn_or, s(node, :const, node.name), s(node, :cdecl, node.name, visit(node.value))) end
Foo ||= bar ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 580 def visit_constant_path_and_write_node(node) s(node, :op_asgn_and, visit(node.target), visit_write_value(node.value)) end
Foo::Bar &&= baz ^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 549 def visit_constant_path_node(node) if node.parent.nil? s(node, :colon3, node.name) else s(node, :colon2, visit(node.parent), node.name) end end
Foo::Bar ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 572 def visit_constant_path_operator_write_node(node) s(node, :op_asgn, visit(node.target), node.binary_operator, visit_write_value(node.value)) end
Foo::Bar += baz ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 588 def visit_constant_path_or_write_node(node) s(node, :op_asgn_or, visit(node.target), visit_write_value(node.value)) end
Foo::Bar ||= baz ^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 596 def visit_constant_path_target_node(node) inner = if node.parent.nil? s(node, :colon3, node.name) else s(node, :colon2, visit(node.parent), node.name) end s(node, :const, inner) end
Foo::Bar, = baz ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 564 def visit_constant_path_write_node(node) s(node, :cdecl, visit(node.target), visit_write_value(node.value)) end
Foo::Bar = 1 ^^^^^^^^^^^^ Foo::Foo, Bar::Bar = 1 ^^^^^^^^ ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 498 def visit_constant_read_node(node) s(node, :const, node.name) end
Foo ^^^
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# File lib/prism/translation/ruby_parser.rb, line 541 def visit_constant_target_node(node) s(node, :cdecl, node.name) end
Foo, = bar ^^^
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# File lib/prism/translation/ruby_parser.rb, line 509 def visit_constant_write_node(node) s(node, :cdecl, node.name, visit_write_value(node.value)) end
Foo = 1 ^^^^^^^ Foo, Bar = 1 ^^^ ^^^
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# File lib/prism/translation/ruby_parser.rb, line 614 def visit_def_node(node) name = node.name_loc.slice.to_sym result = if node.receiver.nil? s(node, :defn, name) else s(node, :defs, visit(node.receiver), name) end attach_comments(result, node) result.line(node.name_loc.start_line) if node.parameters.nil? result << s(node, :args).line(node.name_loc.start_line) else result << visit(node.parameters) end if node.body.nil? result << s(node, :nil) elsif node.body.is_a?(StatementsNode) compiler = copy_compiler(in_def: true) result.concat(node.body.body.map { |child| child.accept(compiler) }) else result << node.body.accept(copy_compiler(in_def: true)) end end
def foo; end ^^^^^^^^^^^^ def self.foo; end ^^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 649 def visit_defined_node(node) s(node, :defined, visit(node.value)) end
defined? a ^^^^^^^^^^ defined?(a) ^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 657 def visit_else_node(node) visit(node.statements) end
if foo then bar else baz end
^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 665 def visit_embedded_statements_node(node) result = s(node, :evstr) result << visit(node.statements) unless node.statements.nil? result end
"foo #{bar}"
^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 675 def visit_embedded_variable_node(node) s(node, :evstr, visit(node.variable)) end
"foo #@bar"
^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 683 def visit_ensure_node(node) node.statements.nil? ? s(node, :nil) : visit(node.statements) end
begin; foo; ensure; bar; end
^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 691 def visit_false_node(node) s(node, :false) end
false ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 699 def visit_find_pattern_node(node) s(node, :find_pat, visit_pattern_constant(node.constant), :"*#{node.left.expression&.name}", *visit_all(node.requireds), :"*#{node.right.expression&.name}") end
foo => [*, bar, *]
^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 707 def visit_flip_flop_node(node) if node.left.is_a?(IntegerNode) && node.right.is_a?(IntegerNode) s(node, :lit, Range.new(node.left.value, node.right.value, node.exclude_end?)) else s(node, node.exclude_end? ? :flip3 : :flip2, visit(node.left), visit(node.right)) end end
if foo .. bar; end ^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 719 def visit_float_node(node) s(node, :lit, node.value) end
1.0 ^^^
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# File lib/prism/translation/ruby_parser.rb, line 727 def visit_for_node(node) s(node, :for, visit(node.collection), visit(node.index), visit(node.statements)) end
for foo in bar do end ^^^^^^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 735 def visit_forwarding_arguments_node(node) s(node, :forward_args) end
def foo(...); bar(...); end
^^^
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# File lib/prism/translation/ruby_parser.rb, line 743 def visit_forwarding_parameter_node(node) s(node, :forward_args) end
def foo(...); end
^^^
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# File lib/prism/translation/ruby_parser.rb, line 754 def visit_forwarding_super_node(node) visit_block(node, s(node, :zsuper), node.block) end
super
^^^^^
super {}
^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 789 def visit_global_variable_and_write_node(node) s(node, :op_asgn_and, s(node, :gvar, node.name), s(node, :gasgn, node.name, visit_write_value(node.value))) end
$foo &&= bar ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 781 def visit_global_variable_operator_write_node(node) s(node, :gasgn, node.name, s(node, :call, s(node, :gvar, node.name), node.binary_operator, visit(node.value))) end
$foo += bar ^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 797 def visit_global_variable_or_write_node(node) s(node, :op_asgn_or, s(node, :gvar, node.name), s(node, :gasgn, node.name, visit_write_value(node.value))) end
$foo ||= bar ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 762 def visit_global_variable_read_node(node) s(node, :gvar, node.name) end
$foo ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 805 def visit_global_variable_target_node(node) s(node, :gasgn, node.name) end
$foo, = bar ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 773 def visit_global_variable_write_node(node) s(node, :gasgn, node.name, visit_write_value(node.value)) end
$foo = 1 ^^^^^^^^ $foo, $bar = 1 ^^^^ ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 813 def visit_hash_node(node) s(node, :hash).concat(node.elements.flat_map { |element| visit(element) }) end
{}
^^
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# File lib/prism/translation/ruby_parser.rb, line 821 def visit_hash_pattern_node(node) result = s(node, :hash_pat, visit_pattern_constant(node.constant)).concat(node.elements.flat_map { |element| visit(element) }) case node.rest when AssocSplatNode result << s(node.rest, :kwrest, :"**#{node.rest.value&.name}") when NoKeywordsParameterNode result << visit(node.rest) end result end
foo => {}
^^
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# File lib/prism/translation/ruby_parser.rb, line 844 def visit_if_node(node) s(node, :if, visit(node.predicate), visit(node.statements), visit(node.subsequent)) end
if foo then bar end ^^^^^^^^^^^^^^^^^^^ bar if foo ^^^^^^^^^^ foo ? bar : baz ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 849 def visit_imaginary_node(node) s(node, :lit, node.value) end
1i
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# File lib/prism/translation/ruby_parser.rb, line 857 def visit_implicit_node(node) end
{ foo: }
^^^^
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# File lib/prism/translation/ruby_parser.rb, line 864 def visit_implicit_rest_node(node) end
foo { |bar,| }
^
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# File lib/prism/translation/ruby_parser.rb, line 871 def visit_in_node(node) pattern = if node.pattern.is_a?(ConstantPathNode) s(node.pattern, :const, visit(node.pattern)) else node.pattern.accept(copy_compiler(in_pattern: true)) end s(node, :in, pattern).concat(node.statements.nil? ? [nil] : visit_all(node.statements.body)) end
case foo; in bar; end ^^^^^^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 901 def visit_index_and_write_node(node) arglist = nil if !node.arguments.nil? || !node.block.nil? arglist = s(node, :arglist).concat(visit_all(node.arguments&.arguments || [])) arglist << visit(node.block) if !node.block.nil? end s(node, :op_asgn1, visit(node.receiver), arglist, :"&&", visit_write_value(node.value)) end
foo[bar] &&= baz ^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 886 def visit_index_operator_write_node(node) arglist = nil if !node.arguments.nil? || !node.block.nil? arglist = s(node, :arglist).concat(visit_all(node.arguments&.arguments || [])) arglist << visit(node.block) if !node.block.nil? end s(node, :op_asgn1, visit(node.receiver), arglist, node.binary_operator, visit_write_value(node.value)) end
foo[bar] += baz ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 916 def visit_index_or_write_node(node) arglist = nil if !node.arguments.nil? || !node.block.nil? arglist = s(node, :arglist).concat(visit_all(node.arguments&.arguments || [])) arglist << visit(node.block) if !node.block.nil? end s(node, :op_asgn1, visit(node.receiver), arglist, :"||", visit_write_value(node.value)) end
foo[bar] ||= baz ^^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 931 def visit_index_target_node(node) arguments = visit_all(node.arguments&.arguments || []) arguments << visit(node.block) unless node.block.nil? s(node, :attrasgn, visit(node.receiver), :[]=).concat(arguments) end
foo[bar], = 1 ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 969 def visit_instance_variable_and_write_node(node) s(node, :op_asgn_and, s(node, :ivar, node.name), s(node, :iasgn, node.name, visit(node.value))) end
@foo &&= bar ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 961 def visit_instance_variable_operator_write_node(node) s(node, :iasgn, node.name, s(node, :call, s(node, :ivar, node.name), node.binary_operator, visit_write_value(node.value))) end
@foo += bar ^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 977 def visit_instance_variable_or_write_node(node) s(node, :op_asgn_or, s(node, :ivar, node.name), s(node, :iasgn, node.name, visit(node.value))) end
@foo ||= bar ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 942 def visit_instance_variable_read_node(node) s(node, :ivar, node.name) end
@foo ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 985 def visit_instance_variable_target_node(node) s(node, :iasgn, node.name) end
@foo, = bar ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 953 def visit_instance_variable_write_node(node) s(node, :iasgn, node.name, visit_write_value(node.value)) end
@foo = 1 ^^^^^^^^ @foo, @bar = 1 ^^^^ ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 993 def visit_integer_node(node) s(node, :lit, node.value) end
1 ^
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# File lib/prism/translation/ruby_parser.rb, line 1001 def visit_interpolated_match_last_line_node(node) parts = visit_interpolated_parts(node.parts) regexp = if parts.length == 1 s(node, :lit, Regexp.new(parts.first, node.options)) else s(node, :dregx).concat(parts).tap do |result| options = node.options result << options if options != 0 end end s(node, :match, regexp) end
if /foo #{bar}/ then end
^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1020 def visit_interpolated_regular_expression_node(node) parts = visit_interpolated_parts(node.parts) if parts.length == 1 s(node, :lit, Regexp.new(parts.first, node.options)) else s(node, :dregx).concat(parts).tap do |result| options = node.options result << options if options != 0 end end end
/foo #{bar}/
^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1037 def visit_interpolated_string_node(node) parts = visit_interpolated_parts(node.parts) parts.length == 1 ? s(node, :str, parts.first) : s(node, :dstr).concat(parts) end
"foo #{bar}"
^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1046 def visit_interpolated_symbol_node(node) parts = visit_interpolated_parts(node.parts) parts.length == 1 ? s(node, :lit, parts.first.to_sym) : s(node, :dsym).concat(parts) end
:"foo #{bar}"
^^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1055 def visit_interpolated_x_string_node(node) source = node.heredoc? ? node.parts.first : node parts = visit_interpolated_parts(node.parts) parts.length == 1 ? s(source, :xstr, parts.first) : s(source, :dxstr).concat(parts) end
`foo #{bar}`
^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1138 def visit_it_local_variable_read_node(node) s(node, :call, nil, :it) end
-> { it }
^^
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# File lib/prism/translation/ruby_parser.rb, line 1146 def visit_keyword_hash_node(node) s(node, :hash).concat(node.elements.flat_map { |element| visit(element) }) end
foo(bar: baz)
^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1157 def visit_keyword_rest_parameter_node(node) :"**#{node.name}" end
def foo(**bar); end
^^^^^
def foo(**); end
^^
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# File lib/prism/translation/ruby_parser.rb, line 1162 def visit_lambda_node(node) parameters = case node.parameters when nil, ItParametersNode, NumberedParametersNode 0 else visit(node.parameters) end if node.body.nil? s(node, :iter, s(node, :lambda), parameters) else s(node, :iter, s(node, :lambda), parameters, visit(node.body)) end end
-> {}
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# File lib/prism/translation/ruby_parser.rb, line 1213 def visit_local_variable_and_write_node(node) s(node, :op_asgn_and, s(node, :lvar, node.name), s(node, :lasgn, node.name, visit_write_value(node.value))) end
foo &&= bar ^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1205 def visit_local_variable_operator_write_node(node) s(node, :lasgn, node.name, s(node, :call, s(node, :lvar, node.name), node.binary_operator, visit_write_value(node.value))) end
foo += bar ^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1221 def visit_local_variable_or_write_node(node) s(node, :op_asgn_or, s(node, :lvar, node.name), s(node, :lasgn, node.name, visit_write_value(node.value))) end
foo ||= bar ^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1182 def visit_local_variable_read_node(node) if node.name.match?(/^_\d$/) s(node, :call, nil, node.name) else s(node, :lvar, node.name) end end
foo ^^^
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# File lib/prism/translation/ruby_parser.rb, line 1229 def visit_local_variable_target_node(node) s(node, :lasgn, node.name) end
foo, = bar ^^^
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# File lib/prism/translation/ruby_parser.rb, line 1197 def visit_local_variable_write_node(node) s(node, :lasgn, node.name, visit_write_value(node.value)) end
foo = 1 ^^^^^^^ foo, bar = 1 ^^^ ^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1237 def visit_match_last_line_node(node) s(node, :match, s(node, :lit, Regexp.new(node.unescaped, node.options))) end
if /foo/ then end ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1245 def visit_match_predicate_node(node) s(node, :case, visit(node.value), s(node, :in, node.pattern.accept(copy_compiler(in_pattern: true)), nil), nil) end
foo in bar ^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1253 def visit_match_required_node(node) s(node, :case, visit(node.value), s(node, :in, node.pattern.accept(copy_compiler(in_pattern: true)), nil), nil) end
foo => bar ^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1261 def visit_match_write_node(node) s(node, :match2, visit(node.call.receiver), visit(node.call.arguments.arguments.first)) end
/(?<foo>foo)/ =~ bar ^^^^^^^^^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1268 def visit_missing_node(node) raise "Cannot visit missing node directly" end
语法树中缺失的节点。这仅在出现语法错误时使用。parser gem 没有这样的概念,所以我们在这里发明了自己的。
Source
# File lib/prism/translation/ruby_parser.rb, line 1276 def visit_module_node(node) name = if node.constant_path.is_a?(ConstantReadNode) node.name else visit(node.constant_path) end result = if node.body.nil? s(node, :module, name) elsif node.body.is_a?(StatementsNode) compiler = copy_compiler(in_def: false) s(node, :module, name).concat(node.body.body.map { |child| child.accept(compiler) }) else s(node, :module, name, node.body.accept(copy_compiler(in_def: false))) end attach_comments(result, node) result end
module Foo; end ^^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1302 def visit_multi_target_node(node) targets = [*node.lefts] targets << node.rest if !node.rest.nil? && !node.rest.is_a?(ImplicitRestNode) targets.concat(node.rights) s(node, :masgn, s(node, :array).concat(visit_all(targets))) end
foo, bar = baz ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1314 def visit_multi_write_node(node) targets = [*node.lefts] targets << node.rest if !node.rest.nil? && !node.rest.is_a?(ImplicitRestNode) targets.concat(node.rights) value = if node.value.is_a?(ArrayNode) && node.value.opening_loc.nil? if node.value.elements.length == 1 && node.value.elements.first.is_a?(SplatNode) visit(node.value.elements.first) else visit(node.value) end else s(node.value, :to_ary, visit(node.value)) end s(node, :masgn, s(node, :array).concat(visit_all(targets)), value) end
foo, bar = baz ^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1340 def visit_next_node(node) if node.arguments.nil? s(node, :next) elsif node.arguments.arguments.length == 1 argument = node.arguments.arguments.first s(node, :next, argument.is_a?(SplatNode) ? s(node, :svalue, visit(argument)) : visit(argument)) else s(node, :next, s(node, :array).concat(visit_all(node.arguments.arguments))) end end
next ^^^^ next foo ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1355 def visit_nil_node(node) s(node, :nil) end
nil ^^^
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# File lib/prism/translation/ruby_parser.rb, line 1363 def visit_no_keywords_parameter_node(node) in_pattern ? s(node, :kwrest, :"**nil") : :"**nil" end
def foo(**nil); end
^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1371 def visit_numbered_parameters_node(node) raise "Cannot visit numbered parameters directly" end
-> { _1 + _2 }
^^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1379 def visit_numbered_reference_read_node(node) s(node, :nth_ref, node.number) end
$1 ^^
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# File lib/prism/translation/ruby_parser.rb, line 1387 def visit_optional_keyword_parameter_node(node) s(node, :kwarg, node.name, visit(node.value)) end
def foo(bar: baz); end
^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1395 def visit_optional_parameter_node(node) s(node, :lasgn, node.name, visit(node.value)) end
def foo(bar = 1); end
^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1403 def visit_or_node(node) left = visit(node.left) if left[0] == :or # ruby_parser has the or keyword as right-associative as opposed to # prism which has it as left-associative. We reverse that # associativity here. nest = left nest = nest[2] while nest[2][0] == :or nest[2] = s(node, :or, nest[2], visit(node.right)) left else s(node, :or, left, visit(node.right)) end end
a or b ^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1423 def visit_parameters_node(node) children = node.compact_child_nodes.map do |element| if element.is_a?(MultiTargetNode) visit_destructured_parameter(element) else visit(element) end end s(node, :args).concat(children) end
def foo(bar, *baz); end
^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1465 def visit_parentheses_node(node) if node.body.nil? s(node, :nil) else visit(node.body) end end
() ^^ (1) ^^^
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# File lib/prism/translation/ruby_parser.rb, line 1477 def visit_pinned_expression_node(node) node.expression.accept(copy_compiler(in_pattern: false)) end
foo => ^(bar)
^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1485 def visit_pinned_variable_node(node) if node.variable.is_a?(LocalVariableReadNode) && node.variable.name.match?(/^_\d$/) s(node, :lvar, node.variable.name) else visit(node.variable) end end
foo = 1 and bar => ^foo
^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1494 def visit_post_execution_node(node) s(node, :iter, s(node, :postexe), 0, visit(node.statements)) end
END {}
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# File lib/prism/translation/ruby_parser.rb, line 1499 def visit_pre_execution_node(node) s(node, :iter, s(node, :preexe), 0, visit(node.statements)) end
BEGIN {}
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# File lib/prism/translation/ruby_parser.rb, line 1504 def visit_program_node(node) visit(node.statements) end
顶层程序节点。
Source
# File lib/prism/translation/ruby_parser.rb, line 1512 def visit_range_node(node) if !in_pattern && !node.left.nil? && !node.right.nil? && ([node.left.type, node.right.type] - %i[nil_node integer_node]).empty? left = node.left.value if node.left.is_a?(IntegerNode) right = node.right.value if node.right.is_a?(IntegerNode) s(node, :lit, Range.new(left, right, node.exclude_end?)) else s(node, node.exclude_end? ? :dot3 : :dot2, visit_range_bounds_node(node.left), visit_range_bounds_node(node.right)) end end
0..5 ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1536 def visit_rational_node(node) s(node, :lit, node.value) end
1r ^^
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# File lib/prism/translation/ruby_parser.rb, line 1544 def visit_redo_node(node) s(node, :redo) end
redo ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1552 def visit_regular_expression_node(node) s(node, :lit, Regexp.new(node.unescaped, node.options)) end
/foo/ ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1560 def visit_required_keyword_parameter_node(node) s(node, :kwarg, node.name) end
def foo(bar:); end
^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1568 def visit_required_parameter_node(node) node.name end
def foo(bar); end
^^^
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# File lib/prism/translation/ruby_parser.rb, line 1576 def visit_rescue_modifier_node(node) s(node, :rescue, visit(node.expression), s(node.rescue_expression, :resbody, s(node.rescue_expression, :array), visit(node.rescue_expression))) end
foo rescue bar ^^^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1584 def visit_rescue_node(node) exceptions = if node.exceptions.length == 1 && node.exceptions.first.is_a?(SplatNode) visit(node.exceptions.first) else s(node, :array).concat(visit_all(node.exceptions)) end if !node.reference.nil? exceptions << (visit(node.reference) << s(node.reference, :gvar, :"$!")) end s(node, :resbody, exceptions).concat(node.statements.nil? ? [nil] : visit_all(node.statements.body)) end
begin; rescue; end
^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1606 def visit_rest_parameter_node(node) :"*#{node.name}" end
def foo(*bar); end
^^^^
def foo(*); end
^
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# File lib/prism/translation/ruby_parser.rb, line 1614 def visit_retry_node(node) s(node, :retry) end
retry ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1625 def visit_return_node(node) if node.arguments.nil? s(node, :return) elsif node.arguments.arguments.length == 1 argument = node.arguments.arguments.first s(node, :return, argument.is_a?(SplatNode) ? s(node, :svalue, visit(argument)) : visit(argument)) else s(node, :return, s(node, :array).concat(visit_all(node.arguments.arguments))) end end
return ^^^^^^ return 1 ^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1640 def visit_self_node(node) s(node, :self) end
self ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1653 def visit_singleton_class_node(node) s(node, :sclass, visit(node.expression)).tap do |sexp| sexp << node.body.accept(copy_compiler(in_def: false)) unless node.body.nil? end end
class << self; end ^^^^^^^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1663 def visit_source_encoding_node(node) # TODO s(node, :colon2, s(node, :const, :Encoding), :UTF_8) end
__ENCODING__ ^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1672 def visit_source_file_node(node) s(node, :str, node.filepath) end
__FILE__ ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1680 def visit_source_line_node(node) s(node, :lit, node.location.start_line) end
__LINE__ ^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1694 def visit_splat_node(node) if node.expression.nil? s(node, :splat) else s(node, :splat, visit(node.expression)) end end
foo(*bar)
^^^^
def foo((bar, *baz)); end
^^^^
def foo(*); bar(*); end
^
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# File lib/prism/translation/ruby_parser.rb, line 1703 def visit_statements_node(node) first, *rest = node.body if rest.empty? visit(first) else s(node, :block).concat(visit_all(node.body)) end end
一个语句列表。
Source
# File lib/prism/translation/ruby_parser.rb, line 1717 def visit_string_node(node) unescaped = node.unescaped if node.forced_binary_encoding? unescaped = unescaped.dup unescaped.force_encoding(Encoding::BINARY) end s(node, :str, unescaped) end
"foo" ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1732 def visit_super_node(node) arguments = node.arguments&.arguments || [] block = node.block if block.is_a?(BlockArgumentNode) arguments << block block = nil end visit_block(node, s(node, :super).concat(visit_all(arguments)), block) end
super(foo) ^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1748 def visit_symbol_node(node) node.value == "!@" ? s(node, :lit, :"!@") : s(node, :lit, node.unescaped.to_sym) end
:foo ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1756 def visit_true_node(node) s(node, :true) end
true ^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1764 def visit_undef_node(node) names = node.names.map { |name| s(node, :undef, visit(name)) } names.length == 1 ? names.first : s(node, :block).concat(names) end
undef foo ^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1776 def visit_unless_node(node) s(node, :if, visit(node.predicate), visit(node.else_clause), visit(node.statements)) end
unless foo; bar end ^^^^^^^^^^^^^^^^^^^ bar unless foo ^^^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1787 def visit_until_node(node) s(node, :until, visit(node.predicate), visit(node.statements), !node.begin_modifier?) end
until foo; bar end ^^^^^^^^^^^^^^^^^ bar until foo ^^^^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1795 def visit_when_node(node) s(node, :when, s(node, :array).concat(visit_all(node.conditions))).concat(node.statements.nil? ? [nil] : visit_all(node.statements.body)) end
case foo; when bar; end
^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1806 def visit_while_node(node) s(node, :while, visit(node.predicate), visit(node.statements), !node.begin_modifier?) end
while foo; bar end ^^^^^^^^^^^^^^^^^^ bar while foo ^^^^^^^^^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1814 def visit_x_string_node(node) result = s(node, :xstr, node.unescaped) if node.heredoc? result.line = node.content_loc.start_line result.line_max = node.content_loc.end_line end result end
`foo` ^^^^^
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# File lib/prism/translation/ruby_parser.rb, line 1832 def visit_yield_node(node) s(node, :yield).concat(visit_all(node.arguments&.arguments || [])) end
yield ^^^^^ yield 1 ^^^^^^^
私有实例方法
Source
# File lib/prism/translation/ruby_parser.rb, line 1839 def attach_comments(sexp, node) return unless node.comments return if node.comments.empty? extra = node.location.start_line - node.comments.last.location.start_line comments = node.comments.map(&:slice) comments.concat([nil] * [0, extra].max) sexp.comments = comments.join("\n") end
将 prism 注释附加到给定的 sexp。
Source
# File lib/prism/translation/ruby_parser.rb, line 490 def class_variable_write_type in_def ? :cvasgn : :cvdecl end
如果在方法定义内写入类变量,其类型与其他地方不同。
Source
# File lib/prism/translation/ruby_parser.rb, line 1850 def copy_compiler(in_def: self.in_def, in_pattern: self.in_pattern) Compiler.new(file, in_def: in_def, in_pattern: in_pattern) end
使用给定的选项创建一个新的编译器。
Source
# File lib/prism/translation/ruby_parser.rb, line 369 def op_asgn?(node) node.call_operator == "::" || (node.value.is_a?(CallNode) && node.value.opening_loc.nil? && !node.value.arguments.nil?) end
后面带有运算符的调用节点将是 op_asgn 或 op_asgn2 节点。这由它们的调用运算符和右侧决定。
Source
# File lib/prism/translation/ruby_parser.rb, line 375 def op_asgn_type(node, type) node.safe_navigation? ? :"safe_#{type}" : type end
后面带有运算符的调用节点可以使用 &。作为运算符,这会通过在前面添加“safe_”来更改其类型。
Source
# File lib/prism/translation/ruby_parser.rb, line 1855 def s(node, *arguments) result = Sexp.new(*arguments) result.file = file result.line = node.location.start_line result.line_max = node.location.end_line result end
从给定的 prism 节点和参数创建一个新的 Sexp 对象。
Source
# File lib/prism/translation/ruby_parser.rb, line 1865 def visit_block(node, sexp, block) if block.nil? sexp else parameters = case block.parameters when nil, ItParametersNode, NumberedParametersNode 0 else visit(block.parameters) end if block.body.nil? s(node, :iter, sexp, parameters) else s(node, :iter, sexp, parameters, visit(block.body)) end end end
访问一个块节点,它将通过将给定的访问节点包装在 iter 节点中来修改 AST。
Source
# File lib/prism/translation/ruby_parser.rb, line 1440 def visit_destructured_parameter(node) children = [*node.lefts, *node.rest, *node.rights].map do |child| case child when RequiredParameterNode visit(child) when MultiTargetNode visit_destructured_parameter(child) when SplatNode :"*#{child.expression&.name}" else raise end end s(node, :masgn).concat(children) end
def foo((bar, baz)); end
^^^^^^^^^^
Source
# File lib/prism/translation/ruby_parser.rb, line 1062 def visit_interpolated_parts(parts) visited = [] parts.each do |part| result = visit(part) if result[0] == :evstr && result[1] if result[1][0] == :str visited << result[1] elsif result[1][0] == :dstr visited.concat(result[1][1..-1]) else visited << result end visited << :space elsif result[0] == :dstr if !visited.empty? && part.parts[0].is_a?(StringNode) # If we are in the middle of an implicitly concatenated string, # we should not have a bare string as the first part. In this # case we need to visit just that first part and then we can # push the rest of the parts onto the visited array. result[1] = visit(part.parts[0]) end visited.concat(result[1..-1]) else visited << result end end state = :beginning #: :beginning | :string_content | :interpolated_content results = [] visited.each_with_index do |result, index| case state when :beginning if result.is_a?(String) results << result state = :string_content elsif result.is_a?(Array) && result[0] == :str results << result[1] state = :string_content else results << "" results << result state = :interpolated_content end when :string_content if result == :space # continue elsif result.is_a?(String) results[0] = "#{results[0]}#{result}" elsif result.is_a?(Array) && result[0] == :str results[0] = "#{results[0]}#{result[1]}" else results << result state = :interpolated_content end when :interpolated_content if result == :space # continue elsif visited[index - 1] != :space && result.is_a?(Array) && result[0] == :str && results[-1][0] == :str && (results[-1].line_max == result.line) results[-1][1] = "#{results[-1][1]}#{result[1]}" results[-1].line_max = result.line_max else results << result end end end results end
访问类字符串节点的插值内容。
Source
# File lib/prism/translation/ruby_parser.rb, line 1886 def visit_pattern_constant(node) case node when nil # nothing when ConstantReadNode visit(node) else s(node, :const, visit(node)) end end
Pattern 常量将被包装在另一层 :const 中。
Source
# File lib/prism/translation/ruby_parser.rb, line 1524 def visit_range_bounds_node(node) if node.is_a?(ParenthesesNode) && node.body.nil? s(node, :begin) else visit(node) end end
如果范围节点的边界是空括号,那么它们不会被其常规的 s(:nil) 替换,而是被替换为 s(:begin)。
Source
# File lib/prism/translation/ruby_parser.rb, line 1900 def visit_write_value(node) if node.is_a?(ArrayNode) && node.opening_loc.nil? if node.elements.length == 1 && node.elements.first.is_a?(SplatNode) s(node, :svalue, visit(node.elements.first)) else s(node, :svalue, visit(node)) end else visit(node) end end
访问写入的值,该值将位于写入运算符的右侧。因为隐式数组可以包含 splats,它们可能会被包装在 svalue 节点中。