Class: SyntaxTree::YARV::Compiler
- Inherits:
-
BasicVisitor
- Object
- BasicVisitor
- SyntaxTree::YARV::Compiler
- Defined in:
- lib/syntax_tree/yarv/compiler.rb
Overview
This class is an experiment in transforming Syntax Tree nodes into their corresponding YARV instruction sequences. It attempts to mirror the behavior of RubyVM::InstructionSequence.compile.
You use this as with any other visitor. First you parse code into a tree, then you visit it with this compiler. Visiting the root node of the tree will return a SyntaxTree::YARV::Compiler::InstructionSequence object. With that object you can call #to_a on it, which will return a serialized form of the instruction sequence as an array. This array should mirror the array given by RubyVM::InstructionSequence#to_a.
As an example, here is how you would compile a single expression:
program = SyntaxTree.parse("1 + 2")
program.accept(SyntaxTree::YARV::Compiler.new).to_a
[
"YARVInstructionSequence/SimpleDataFormat",
3,
1,
1,
{:arg_size=>0, :local_size=>0, :stack_max=>2},
"<compiled>",
"<compiled>",
"<compiled>",
1,
:top,
[],
{},
[],
[
[:putobject_INT2FIX_1_],
[:putobject, 2],
[:opt_plus, {:mid=>:+, :flag=>16, :orig_argc=>1}],
[:leave]
]
]
Note that this is the same output as calling:
RubyVM::InstructionSequence.compile("1 + 2").to_a
Defined Under Namespace
Classes: Options, RubyVisitor
Instance Attribute Summary collapse
-
#iseq ⇒ Object
readonly
The current instruction sequence that is being compiled.
-
#last_statement ⇒ Object
readonly
A boolean to track if we’re currently compiling the last statement within a set of statements.
-
#options ⇒ Object
readonly
These options mirror the compilation options that we currently support that can be also passed to RubyVM::InstructionSequence.compile.
Instance Method Summary collapse
-
#initialize(options = Options.new) ⇒ Compiler
constructor
A new instance of Compiler.
- #visit_alias(node) ⇒ Object
- #visit_aref(node) ⇒ Object
- #visit_arg_block(node) ⇒ Object
- #visit_arg_paren(node) ⇒ Object
- #visit_arg_star(node) ⇒ Object
- #visit_args(node) ⇒ Object
- #visit_array(node) ⇒ Object
- #visit_aryptn(node) ⇒ Object
- #visit_assign(node) ⇒ Object
- #visit_assoc(node) ⇒ Object
- #visit_assoc_splat(node) ⇒ Object
- #visit_backref(node) ⇒ Object
- #visit_bare_assoc_hash(node) ⇒ Object
- #visit_BEGIN(node) ⇒ Object
- #visit_begin(node) ⇒ Object
- #visit_binary(node) ⇒ Object
- #visit_block(node) ⇒ Object
- #visit_block_var(node) ⇒ Object
- #visit_blockarg(node) ⇒ Object
- #visit_bodystmt(node) ⇒ Object
- #visit_break(node) ⇒ Object
- #visit_call(node) ⇒ Object
- #visit_case(node) ⇒ Object
- #visit_CHAR(node) ⇒ Object
- #visit_class(node) ⇒ Object
- #visit_command(node) ⇒ Object
- #visit_command_call(node) ⇒ Object
- #visit_const_path_field(node) ⇒ Object
- #visit_const_path_ref(node) ⇒ Object
- #visit_def(node) ⇒ Object
- #visit_defined(node) ⇒ Object
- #visit_dyna_symbol(node) ⇒ Object
- #visit_else(node) ⇒ Object
- #visit_elsif(node) ⇒ Object
- #visit_END(node) ⇒ Object
- #visit_ensure(node) ⇒ Object
- #visit_field(node) ⇒ Object
- #visit_float(node) ⇒ Object
- #visit_fndptn(node) ⇒ Object
- #visit_for(node) ⇒ Object
- #visit_hash(node) ⇒ Object
- #visit_heredoc(node) ⇒ Object
- #visit_hshptn(node) ⇒ Object
- #visit_if(node) ⇒ Object
- #visit_if_op(node) ⇒ Object
- #visit_imaginary(node) ⇒ Object
- #visit_int(node) ⇒ Object
- #visit_kwrest_param(node) ⇒ Object
- #visit_label(node) ⇒ Object
- #visit_lambda(node) ⇒ Object
- #visit_lambda_var(node) ⇒ Object
- #visit_massign(node) ⇒ Object
- #visit_method_add_block(node) ⇒ Object
- #visit_mlhs(node) ⇒ Object
- #visit_module(node) ⇒ Object
- #visit_mrhs(node) ⇒ Object
- #visit_next(node) ⇒ Object
- #visit_not(node) ⇒ Object
- #visit_opassign(node) ⇒ Object
- #visit_params(node) ⇒ Object
- #visit_paren(node) ⇒ Object
- #visit_pinned_begin(node) ⇒ Object
- #visit_pinned_var_ref(node) ⇒ Object
- #visit_program(node) ⇒ Object
- #visit_qsymbols(node) ⇒ Object
- #visit_qwords(node) ⇒ Object
- #visit_range(node) ⇒ Object
- #visit_rassign(node) ⇒ Object
- #visit_rational(node) ⇒ Object
- #visit_redo(node) ⇒ Object
- #visit_regexp_literal(node) ⇒ Object
- #visit_rescue(node) ⇒ Object
- #visit_rescue_ex(node) ⇒ Object
- #visit_rescue_mod(node) ⇒ Object
- #visit_rest_param(node) ⇒ Object
- #visit_retry(node) ⇒ Object
- #visit_return(node) ⇒ Object
- #visit_sclass(node) ⇒ Object
- #visit_statements(node) ⇒ Object
- #visit_string_concat(node) ⇒ Object
- #visit_string_embexpr(node) ⇒ Object
- #visit_string_literal(node) ⇒ Object
- #visit_super(node) ⇒ Object
- #visit_symbol_literal(node) ⇒ Object
- #visit_symbols(node) ⇒ Object
- #visit_top_const_ref(node) ⇒ Object
- #visit_tstring_content(node) ⇒ Object
- #visit_unary(node) ⇒ Object
- #visit_undef(node) ⇒ Object
- #visit_unless(node) ⇒ Object
- #visit_until(node) ⇒ Object
- #visit_var_field(node) ⇒ Object
- #visit_var_ref(node) ⇒ Object
- #visit_vcall(node) ⇒ Object
- #visit_when(node) ⇒ Object
- #visit_while(node) ⇒ Object
- #visit_word(node) ⇒ Object
- #visit_words(node) ⇒ Object
- #visit_xstring_literal(node) ⇒ Object
- #visit_yield(node) ⇒ Object
- #visit_zsuper(_node) ⇒ Object
Methods inherited from BasicVisitor
valid_visit_methods, #visit, #visit_all, #visit_child_nodes, visit_method, visit_methods
Constructor Details
Instance Attribute Details
#iseq ⇒ Object (readonly)
The current instruction sequence that is being compiled.
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# File 'lib/syntax_tree/yarv/compiler.rb', line 286 def iseq @iseq end |
#last_statement ⇒ Object (readonly)
A boolean to track if we’re currently compiling the last statement within a set of statements. This information is necessary to determine if we need to return the value of the last statement.
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# File 'lib/syntax_tree/yarv/compiler.rb', line 291 def last_statement @last_statement end |
#options ⇒ Object (readonly)
These options mirror the compilation options that we currently support that can be also passed to RubyVM::InstructionSequence.compile.
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# File 'lib/syntax_tree/yarv/compiler.rb', line 283 def @options end |
Instance Method Details
#visit_alias(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 339 def visit_alias(node) iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.putspecialobject(PutSpecialObject::OBJECT_CBASE) visit(node.left) visit(node.right) iseq.send(YARV.calldata(:"core#set_method_alias", 3)) end |
#visit_aref(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 347 def visit_aref(node) calldata = YARV.calldata(:[], 1) visit(node.collection) if !.frozen_string_literal? && .specialized_instruction? && (node.index.parts.length == 1) arg = node.index.parts.first if arg.is_a?(StringLiteral) && (arg.parts.length == 1) string_part = arg.parts.first if string_part.is_a?(TStringContent) iseq.opt_aref_with(string_part.value, calldata) return end end end visit(node.index) iseq.send(calldata) end |
#visit_arg_block(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 369 def visit_arg_block(node) visit(node.value) end |
#visit_arg_paren(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 373 def visit_arg_paren(node) visit(node.arguments) end |
#visit_arg_star(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 377 def visit_arg_star(node) visit(node.value) iseq.splatarray(false) end |
#visit_args(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 382 def visit_args(node) visit_all(node.parts) end |
#visit_array(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 386 def visit_array(node) if (compiled = RubyVisitor.compile(node)) iseq.duparray(compiled) elsif node.contents && node.contents.parts.length == 1 && node.contents.parts.first.is_a?(BareAssocHash) && node.contents.parts.first.assocs.length == 1 && node.contents.parts.first.assocs.first.is_a?(AssocSplat) iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.newhash(0) visit(node.contents.parts.first) iseq.send(YARV.calldata(:"core#hash_merge_kwd", 2)) iseq.newarraykwsplat(1) else length = 0 node.contents.parts.each do |part| if part.is_a?(ArgStar) if length > 0 iseq.newarray(length) length = 0 end visit(part.value) iseq.concatarray else visit(part) length += 1 end end iseq.newarray(length) if length > 0 iseq.concatarray if length > 0 && length != node.contents.parts.length end end |
#visit_aryptn(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 421 def visit_aryptn(node) end |
#visit_assign(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 424 def visit_assign(node) case node.target when ARefField calldata = YARV.calldata(:[]=, 2) if !.frozen_string_literal? && .specialized_instruction? && (node.target.index.parts.length == 1) arg = node.target.index.parts.first if arg.is_a?(StringLiteral) && (arg.parts.length == 1) string_part = arg.parts.first if string_part.is_a?(TStringContent) visit(node.target.collection) visit(node.value) iseq.swap iseq.topn(1) iseq.opt_aset_with(string_part.value, calldata) iseq.pop return end end end iseq.putnil visit(node.target.collection) visit(node.target.index) visit(node.value) iseq.setn(3) iseq.send(calldata) iseq.pop when ConstPathField names = constant_names(node.target) name = names.pop if RUBY_VERSION >= "3.2" iseq.opt_getconstant_path(names) visit(node.value) iseq.swap iseq.topn(1) iseq.swap iseq.setconstant(name) else visit(node.value) iseq.dup if last_statement? iseq.opt_getconstant_path(names) iseq.setconstant(name) end when Field iseq.putnil visit(node.target) visit(node.value) iseq.setn(2) iseq.send(YARV.calldata(:"#{node.target.name.value}=", 1)) iseq.pop when TopConstField name = node.target.constant.value.to_sym if RUBY_VERSION >= "3.2" iseq.putobject(Object) visit(node.value) iseq.swap iseq.topn(1) iseq.swap iseq.setconstant(name) else visit(node.value) iseq.dup if last_statement? iseq.putobject(Object) iseq.setconstant(name) end when VarField visit(node.value) iseq.dup if last_statement? case node.target.value when Const iseq.putspecialobject(PutSpecialObject::OBJECT_CONST_BASE) iseq.setconstant(node.target.value.value.to_sym) when CVar iseq.setclassvariable(node.target.value.value.to_sym) when GVar iseq.setglobal(node.target.value.value.to_sym) when Ident lookup = visit(node.target) if lookup.local.is_a?(LocalTable::BlockLocal) iseq.setblockparam(lookup.index, lookup.level) else iseq.setlocal(lookup.index, lookup.level) end when IVar iseq.setinstancevariable(node.target.value.value.to_sym) end end end |
#visit_assoc(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 522 def visit_assoc(node) visit(node.key) visit(node.value) end |
#visit_assoc_splat(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 527 def visit_assoc_splat(node) visit(node.value) end |
#visit_backref(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 531 def visit_backref(node) iseq.getspecial(GetSpecial::SVAR_BACKREF, node.value[1..].to_i << 1) end |
#visit_bare_assoc_hash(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 535 def (node) if (compiled = RubyVisitor.compile(node)) iseq.duphash(compiled) else visit_all(node.assocs) end end |
#visit_BEGIN(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 299 def visit_BEGIN(node) visit(node.statements) end |
#visit_begin(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 543 def visit_begin(node) end |
#visit_binary(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 546 def visit_binary(node) case node.operator when :"&&" done_label = iseq.label visit(node.left) iseq.dup iseq.branchunless(done_label) iseq.pop visit(node.right) iseq.push(done_label) when :"||" visit(node.left) iseq.dup skip_right_label = iseq.label iseq.branchif(skip_right_label) iseq.pop visit(node.right) iseq.push(skip_right_label) else visit(node.left) visit(node.right) iseq.send(YARV.calldata(node.operator, 1)) end end |
#visit_block(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 575 def visit_block(node) with_child_iseq(iseq.block_child_iseq(node.location.start_line)) do iseq.event(:RUBY_EVENT_B_CALL) visit(node.block_var) visit(node.bodystmt) iseq.event(:RUBY_EVENT_B_RETURN) iseq.leave end end |
#visit_block_var(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 585 def visit_block_var(node) params = node.params if params.requireds.length == 1 && params.optionals.empty? && !params.rest && params.posts.empty? && params.keywords.empty? && !params.keyword_rest && !params.block iseq.[:ambiguous_param0] = true end visit(node.params) node.locals.each { |local| iseq.local_table.plain(local.value.to_sym) } end |
#visit_blockarg(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 599 def visit_blockarg(node) iseq.[:block_start] = iseq.argument_size iseq.local_table.block(node.name.value.to_sym) iseq.argument_size += 1 end |
#visit_bodystmt(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 605 def visit_bodystmt(node) visit(node.statements) end |
#visit_break(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 609 def visit_break(node) end |
#visit_call(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 612 def visit_call(node) if node.is_a?(CallNode) return( visit_call( CommandCall.new( receiver: node.receiver, operator: node.operator, message: node., arguments: node.arguments, block: nil, location: node.location ) ) ) end # Track whether or not this is a method call on a block proxy receiver. # If it is, we can potentially do tailcall optimizations on it. block_receiver = false if node.receiver if node.receiver.is_a?(VarRef) lookup = iseq.local_variable(node.receiver.value.value.to_sym) if lookup.local.is_a?(LocalTable::BlockLocal) iseq.getblockparamproxy(lookup.index, lookup.level) block_receiver = true else visit(node.receiver) end else visit(node.receiver) end else iseq.putself end after_call_label = nil if node.operator&.value == "&." iseq.dup after_call_label = iseq.label iseq.branchnil(after_call_label) end arg_parts = argument_parts(node.arguments) argc = arg_parts.length flag = 0 arg_parts.each do |arg_part| case arg_part when ArgBlock argc -= 1 flag |= CallData::CALL_ARGS_BLOCKARG visit(arg_part) when ArgStar flag |= CallData::CALL_ARGS_SPLAT visit(arg_part) when ArgsForward flag |= CallData::CALL_TAILCALL if .tailcall_optimization? flag |= CallData::CALL_ARGS_SPLAT lookup = iseq.local_table.find(:*) iseq.getlocal(lookup.index, lookup.level) iseq.splatarray(arg_parts.length != 1) flag |= CallData::CALL_ARGS_BLOCKARG lookup = iseq.local_table.find(:&) iseq.getblockparamproxy(lookup.index, lookup.level) when BareAssocHash flag |= CallData::CALL_KW_SPLAT visit(arg_part) else visit(arg_part) end end block_iseq = visit(node.block) if node.block # If there's no block and we don't already have any special flags set, # then we can safely call this simple arguments. Note that has to be the # first flag we set after looking at the arguments to get the flags # correct. flag |= CallData::CALL_ARGS_SIMPLE if block_iseq.nil? && flag == 0 # If there's no receiver, then this is an "fcall". flag |= CallData::CALL_FCALL if node.receiver.nil? # If we're calling a method on the passed block object and we have # tailcall optimizations turned on, then we can set the tailcall flag. if block_receiver && .tailcall_optimization? flag |= CallData::CALL_TAILCALL end iseq.send( YARV.calldata(node..value.to_sym, argc, flag), block_iseq ) iseq.event(after_call_label) if after_call_label end |
#visit_case(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 712 def visit_case(node) visit(node.value) if node.value clauses = [] else_clause = nil current = node.consequent while current clauses << current if (current = current.consequent).is_a?(Else) else_clause = current break end end branches = clauses.map do |clause| visit(clause.arguments) iseq.topn(1) iseq.send( YARV.calldata( :===, 1, CallData::CALL_FCALL | CallData::CALL_ARGS_SIMPLE ) ) label = iseq.label iseq.branchif(label) [clause, label] end iseq.pop else_clause ? visit(else_clause) : iseq.putnil iseq.leave branches.each_with_index do |(clause, label), index| iseq.leave if index != 0 iseq.push(label) iseq.pop visit(clause) end end |
#visit_CHAR(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 303 def visit_CHAR(node) if .frozen_string_literal? iseq.putobject(node.value[1..]) else iseq.putstring(node.value[1..]) end end |
#visit_class(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 757 def visit_class(node) name = node.constant.constant.value.to_sym class_iseq = with_child_iseq( iseq.class_child_iseq(name, node.location.start_line) ) do iseq.event(:RUBY_EVENT_CLASS) visit(node.bodystmt) iseq.event(:RUBY_EVENT_END) iseq.leave end flags = DefineClass::TYPE_CLASS case node.constant when ConstPathRef flags |= DefineClass::FLAG_SCOPED visit(node.constant.parent) when ConstRef iseq.putspecialobject(PutSpecialObject::OBJECT_CONST_BASE) when TopConstRef flags |= DefineClass::FLAG_SCOPED iseq.putobject(Object) end if node.superclass flags |= DefineClass::FLAG_HAS_SUPERCLASS visit(node.superclass) else iseq.putnil end iseq.defineclass(name, class_iseq, flags) end |
#visit_command(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 792 def visit_command(node) visit_call( CommandCall.new( receiver: nil, operator: nil, message: node., arguments: node.arguments, block: node.block, location: node.location ) ) end |
#visit_command_call(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 805 def visit_command_call(node) visit_call( CommandCall.new( receiver: node.receiver, operator: node.operator, message: node., arguments: node.arguments, block: node.block, location: node.location ) ) end |
#visit_const_path_field(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 818 def visit_const_path_field(node) visit(node.parent) end |
#visit_const_path_ref(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 822 def visit_const_path_ref(node) names = constant_names(node) iseq.opt_getconstant_path(names) end |
#visit_def(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 827 def visit_def(node) name = node.name.value.to_sym method_iseq = iseq.method_child_iseq(name.to_s, node.location.start_line) with_child_iseq(method_iseq) do visit(node.params) if node.params iseq.event(:RUBY_EVENT_CALL) visit(node.bodystmt) iseq.event(:RUBY_EVENT_RETURN) iseq.leave end if node.target visit(node.target) iseq.definesmethod(name, method_iseq) else iseq.definemethod(name, method_iseq) end iseq.putobject(name) end |
#visit_defined(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 850 def visit_defined(node) case node.value when Assign # If we're assigning to a local variable, then we need to make sure # that we put it into the local table. if node.value.target.is_a?(VarField) && node.value.target.value.is_a?(Ident) iseq.local_table.plain(node.value.target.value.value.to_sym) end iseq.putobject("assignment") when VarRef value = node.value.value name = value.value.to_sym case value when Const iseq.putnil iseq.defined(Defined::TYPE_CONST, name, "constant") when CVar iseq.putnil iseq.defined(Defined::TYPE_CVAR, name, "class variable") when GVar iseq.putnil iseq.defined(Defined::TYPE_GVAR, name, "global-variable") when Ident iseq.putobject("local-variable") when IVar iseq.putnil iseq.defined(Defined::TYPE_IVAR, name, "instance-variable") when Kw case name when :false iseq.putobject("false") when :nil iseq.putobject("nil") when :self iseq.putobject("self") when :true iseq.putobject("true") end end when VCall iseq.putself name = node.value.value.value.to_sym iseq.defined(Defined::TYPE_FUNC, name, "method") when YieldNode iseq.putnil iseq.defined(Defined::TYPE_YIELD, false, "yield") when ZSuper iseq.putnil iseq.defined(Defined::TYPE_ZSUPER, false, "super") else iseq.putobject("expression") end end |
#visit_dyna_symbol(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 908 def visit_dyna_symbol(node) if node.parts.length == 1 && node.parts.first.is_a?(TStringContent) iseq.putobject(node.parts.first.value.to_sym) end end |
#visit_else(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 914 def visit_else(node) visit(node.statements) iseq.pop unless last_statement? end |
#visit_elsif(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 919 def visit_elsif(node) visit_if( IfNode.new( predicate: node.predicate, statements: node.statements, consequent: node.consequent, location: node.location ) ) end |
#visit_END(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 311 def visit_END(node) start_line = node.location.start_line once_iseq = with_child_iseq(iseq.block_child_iseq(start_line)) do postexe_iseq = with_child_iseq(iseq.block_child_iseq(start_line)) do iseq.event(:RUBY_EVENT_B_CALL) *statements, last_statement = node.statements.body visit_all(statements) with_last_statement { visit(last_statement) } iseq.event(:RUBY_EVENT_B_RETURN) iseq.leave end iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.send( YARV.calldata(:"core#set_postexe", 0, CallData::CALL_FCALL), postexe_iseq ) iseq.leave end iseq.once(once_iseq, iseq.inline_storage) iseq.pop end |
#visit_ensure(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 930 def visit_ensure(node) end |
#visit_field(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 933 def visit_field(node) visit(node.parent) end |
#visit_float(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 937 def visit_float(node) iseq.putobject(node.accept(RubyVisitor.new)) end |
#visit_fndptn(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 941 def visit_fndptn(node) end |
#visit_for(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 944 def visit_for(node) visit(node.collection) name = node.index.value.value.to_sym iseq.local_table.plain(name) block_iseq = with_child_iseq( iseq.block_child_iseq(node.statements.location.start_line) ) do iseq.[:lead_num] ||= 0 iseq.[:lead_num] += 1 iseq.[:ambiguous_param0] = true iseq.argument_size += 1 iseq.local_table.plain(2) iseq.getlocal(0, 0) local_variable = iseq.local_variable(name) iseq.setlocal(local_variable.index, local_variable.level) iseq.event(:RUBY_EVENT_B_CALL) iseq.nop visit(node.statements) iseq.event(:RUBY_EVENT_B_RETURN) iseq.leave end iseq.send(YARV.calldata(:each, 0, 0), block_iseq) end |
#visit_hash(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 977 def visit_hash(node) if (compiled = RubyVisitor.compile(node)) iseq.duphash(compiled) else visit_all(node.assocs) iseq.newhash(node.assocs.length * 2) end end |
#visit_heredoc(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 989 def visit_heredoc(node) if node.beginning.value.end_with?("`") visit_xstring_literal(node) elsif node.parts.length == 1 && node.parts.first.is_a?(TStringContent) visit(node.parts.first) else length = visit_string_parts(node) iseq.concatstrings(length) end end |
#visit_hshptn(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 986 def visit_hshptn(node) end |
#visit_if(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1000 def visit_if(node) if node.predicate.is_a?(RangeNode) true_label = iseq.label false_label = iseq.label end_label = iseq.label iseq.getspecial(GetSpecial::SVAR_FLIPFLOP_START, 0) iseq.branchif(true_label) visit(node.predicate.left) iseq.branchunless(end_label) iseq.putobject(true) iseq.setspecial(GetSpecial::SVAR_FLIPFLOP_START) iseq.push(true_label) visit(node.predicate.right) iseq.branchunless(false_label) iseq.putobject(false) iseq.setspecial(GetSpecial::SVAR_FLIPFLOP_START) iseq.push(false_label) visit(node.statements) iseq.leave iseq.push(end_label) iseq.putnil else consequent_label = iseq.label visit(node.predicate) iseq.branchunless(consequent_label) visit(node.statements) if last_statement? iseq.leave iseq.push(consequent_label) node.consequent ? visit(node.consequent) : iseq.putnil else iseq.pop if node.consequent done_label = iseq.label iseq.jump(done_label) iseq.push(consequent_label) visit(node.consequent) iseq.push(done_label) else iseq.push(consequent_label) end end end end |
#visit_if_op(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1054 def visit_if_op(node) visit_if( IfNode.new( predicate: node.predicate, statements: Statements.new(body: [node.truthy], location: Location.default), consequent: Else.new( keyword: Kw.new(value: "else", location: Location.default), statements: Statements.new( body: [node.falsy], location: Location.default ), location: Location.default ), location: Location.default ) ) end |
#visit_imaginary(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1075 def visit_imaginary(node) iseq.putobject(node.accept(RubyVisitor.new)) end |
#visit_int(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1079 def visit_int(node) iseq.putobject(node.accept(RubyVisitor.new)) end |
#visit_kwrest_param(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1083 def visit_kwrest_param(node) iseq.[:kwrest] = iseq.argument_size iseq.argument_size += 1 iseq.local_table.plain(node.name.value.to_sym) end |
#visit_label(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1089 def visit_label(node) iseq.putobject(node.accept(RubyVisitor.new)) end |
#visit_lambda(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1093 def visit_lambda(node) lambda_iseq = with_child_iseq(iseq.block_child_iseq(node.location.start_line)) do iseq.event(:RUBY_EVENT_B_CALL) visit(node.params) visit(node.statements) iseq.event(:RUBY_EVENT_B_RETURN) iseq.leave end iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.send(YARV.calldata(:lambda, 0, CallData::CALL_FCALL), lambda_iseq) end |
#visit_lambda_var(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1107 def visit_lambda_var(node) visit_block_var(node) end |
#visit_massign(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1111 def visit_massign(node) visit(node.value) iseq.dup visit(node.target) end |
#visit_method_add_block(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1117 def visit_method_add_block(node) visit_call( CommandCall.new( receiver: node.call.receiver, operator: node.call.operator, message: node.call., arguments: node.call.arguments, block: node.block, location: node.location ) ) end |
#visit_mlhs(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1130 def visit_mlhs(node) lookups = [] node.parts.each do |part| case part when VarField lookups << visit(part) end end iseq.(lookups.length, 0) lookups.each { |lookup| iseq.setlocal(lookup.index, lookup.level) } end |
#visit_module(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1143 def visit_module(node) name = node.constant.constant.value.to_sym module_iseq = with_child_iseq( iseq.module_child_iseq(name, node.location.start_line) ) do iseq.event(:RUBY_EVENT_CLASS) visit(node.bodystmt) iseq.event(:RUBY_EVENT_END) iseq.leave end flags = DefineClass::TYPE_MODULE case node.constant when ConstPathRef flags |= DefineClass::FLAG_SCOPED visit(node.constant.parent) when ConstRef iseq.putspecialobject(PutSpecialObject::OBJECT_CONST_BASE) when TopConstRef flags |= DefineClass::FLAG_SCOPED iseq.putobject(Object) end iseq.putnil iseq.defineclass(name, module_iseq, flags) end |
#visit_mrhs(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1172 def visit_mrhs(node) if (compiled = RubyVisitor.compile(node)) iseq.duparray(compiled) else visit_all(node.parts) iseq.newarray(node.parts.length) end end |
#visit_next(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1181 def visit_next(node) end |
#visit_not(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1184 def visit_not(node) visit(node.statement) iseq.send(YARV.calldata(:!)) end |
#visit_opassign(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1189 def visit_opassign(node) flag = CallData::CALL_ARGS_SIMPLE if node.target.is_a?(ConstPathField) || node.target.is_a?(TopConstField) flag |= CallData::CALL_FCALL end case (operator = node.operator.value.chomp("=").to_sym) when :"&&" done_label = iseq.label with_opassign(node) do iseq.dup iseq.branchunless(done_label) iseq.pop visit(node.value) end case node.target when ARefField iseq.leave iseq.push(done_label) iseq.setn(3) iseq.adjuststack(3) when ConstPathField, TopConstField iseq.push(done_label) iseq.swap iseq.pop else iseq.push(done_label) end when :"||" if node.target.is_a?(ConstPathField) || node.target.is_a?(TopConstField) opassign_defined(node) iseq.swap iseq.pop elsif node.target.is_a?(VarField) && [Const, CVar, GVar].include?(node.target.value.class) opassign_defined(node) else skip_value_label = iseq.label with_opassign(node) do iseq.dup iseq.branchif(skip_value_label) iseq.pop visit(node.value) end if node.target.is_a?(ARefField) iseq.leave iseq.push(skip_value_label) iseq.setn(3) iseq.adjuststack(3) else iseq.push(skip_value_label) end end else with_opassign(node) do visit(node.value) iseq.send(YARV.calldata(operator, 1, flag)) end end end |
#visit_params(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1255 def visit_params(node) if node.requireds.any? iseq.[:lead_num] = 0 node.requireds.each do |required| iseq.local_table.plain(required.value.to_sym) iseq.argument_size += 1 iseq.[:lead_num] += 1 end end node.optionals.each do |(optional, value)| index = iseq.local_table.size name = optional.value.to_sym iseq.local_table.plain(name) iseq.argument_size += 1 unless iseq..key?(:opt) start_label = iseq.label iseq.push(start_label) iseq.[:opt] = [start_label] end visit(value) iseq.setlocal(index, 0) arg_given_label = iseq.label iseq.push(arg_given_label) iseq.[:opt] << arg_given_label end visit(node.rest) if node.rest if node.posts.any? iseq.[:post_start] = iseq.argument_size iseq.[:post_num] = 0 node.posts.each do |post| iseq.local_table.plain(post.value.to_sym) iseq.argument_size += 1 iseq.[:post_num] += 1 end end if node.keywords.any? iseq.[:kwbits] = 0 iseq.[:keyword] = [] keyword_bits_name = node.keyword_rest ? 3 : 2 iseq.argument_size += 1 keyword_bits_index = iseq.local_table.locals.size + node.keywords.size node.keywords.each_with_index do |(keyword, value), keyword_index| name = keyword.value.chomp(":").to_sym index = iseq.local_table.size iseq.local_table.plain(name) iseq.argument_size += 1 iseq.[:kwbits] += 1 if value.nil? iseq.[:keyword] << name elsif (compiled = RubyVisitor.compile(value)) iseq.[:keyword] << [name, compiled] else skip_value_label = iseq.label iseq.[:keyword] << [name] iseq.checkkeyword(keyword_bits_index, keyword_index) iseq.branchif(skip_value_label) visit(value) iseq.setlocal(index, 0) iseq.push(skip_value_label) end end iseq.local_table.plain(keyword_bits_name) end if node.keyword_rest.is_a?(ArgsForward) if RUBY_VERSION >= "3.2" iseq.local_table.plain(:*) iseq.local_table.plain(:&) iseq.local_table.plain(:"...") iseq.[:rest_start] = iseq.argument_size iseq.[:block_start] = iseq.argument_size + 1 iseq.argument_size += 2 else iseq.local_table.plain(:*) iseq.local_table.plain(:&) iseq.[:rest_start] = iseq.argument_size iseq.[:block_start] = iseq.argument_size + 1 iseq.argument_size += 2 end elsif node.keyword_rest visit(node.keyword_rest) end visit(node.block) if node.block end |
#visit_paren(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1361 def visit_paren(node) visit(node.contents) end |
#visit_pinned_begin(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1365 def visit_pinned_begin(node) end |
#visit_pinned_var_ref(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1368 def visit_pinned_var_ref(node) end |
#visit_program(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1371 def visit_program(node) node.statements.body.each do |statement| break unless statement.is_a?(Comment) if statement.value == "# frozen_string_literal: true" .frozen_string_literal! end end preexes = [] statements = [] node.statements.body.each do |statement| case statement when Comment, EmbDoc, EndContent, VoidStmt # ignore when BEGINBlock preexes << statement else statements << statement end end top_iseq = InstructionSequence.new( "<compiled>", "<compiled>", 1, :top, nil, ) with_child_iseq(top_iseq) do visit_all(preexes) if statements.empty? iseq.putnil else *statements, last_statement = statements visit_all(statements) with_last_statement { visit(last_statement) } end iseq.leave end top_iseq.compile! top_iseq end |
#visit_qsymbols(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1422 def visit_qsymbols(node) iseq.duparray(node.accept(RubyVisitor.new)) end |
#visit_qwords(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1426 def visit_qwords(node) if .frozen_string_literal? iseq.duparray(node.accept(RubyVisitor.new)) else visit_all(node.elements) iseq.newarray(node.elements.length) end end |
#visit_range(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1435 def visit_range(node) if (compiled = RubyVisitor.compile(node)) iseq.putobject(compiled) else visit(node.left) visit(node.right) iseq.newrange(node.operator.value == ".." ? 0 : 1) end end |
#visit_rassign(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1445 def visit_rassign(node) iseq.putnil if node.operator.is_a?(Kw) match_label = iseq.label visit(node.value) iseq.dup visit_pattern(node.pattern, match_label) iseq.pop iseq.pop iseq.putobject(false) iseq.leave iseq.push(match_label) iseq.adjuststack(2) iseq.putobject(true) else no_key_label = iseq.label end_leave_label = iseq.label end_label = iseq.label iseq.putnil iseq.putobject(false) iseq.putnil iseq.putnil visit(node.value) iseq.dup visit_pattern(node.pattern, end_label) # First we're going to push the core onto the stack, then we'll check # if the value to match is truthy. If it is, we'll jump down to raise # NoMatchingPatternKeyError. Otherwise we'll raise # NoMatchingPatternError. iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.topn(4) iseq.branchif(no_key_label) # Here we're going to raise NoMatchingPatternError. iseq.putobject(NoMatchingPatternError) iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.putobject("%p: %s") iseq.topn(4) iseq.topn(7) iseq.send(YARV.calldata(:"core#sprintf", 3)) iseq.send(YARV.calldata(:"core#raise", 2)) iseq.jump(end_leave_label) # Here we're going to raise NoMatchingPatternKeyError. iseq.push(no_key_label) iseq.putobject(NoMatchingPatternKeyError) iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.putobject("%p: %s") iseq.topn(4) iseq.topn(7) iseq.send(YARV.calldata(:"core#sprintf", 3)) iseq.topn(7) iseq.topn(9) iseq.send( YARV.calldata(:new, 1, CallData::CALL_KWARG, %i[matchee key]) ) iseq.send(YARV.calldata(:"core#raise", 1)) iseq.push(end_leave_label) iseq.adjuststack(7) iseq.putnil iseq.leave iseq.push(end_label) iseq.adjuststack(6) iseq.putnil end end |
#visit_rational(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1522 def visit_rational(node) iseq.putobject(node.accept(RubyVisitor.new)) end |
#visit_redo(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1526 def visit_redo(node) end |
#visit_regexp_literal(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1529 def visit_regexp_literal(node) if (compiled = RubyVisitor.compile(node)) iseq.putobject(compiled) else flags = RubyVisitor.new.visit_regexp_literal_flags(node) length = visit_string_parts(node) iseq.toregexp(flags, length) end end |
#visit_rescue(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1539 def visit_rescue(node) end |
#visit_rescue_ex(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1542 def visit_rescue_ex(node) end |
#visit_rescue_mod(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1545 def visit_rescue_mod(node) end |
#visit_rest_param(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1548 def visit_rest_param(node) iseq.local_table.plain(node.name.value.to_sym) iseq.[:rest_start] = iseq.argument_size iseq.argument_size += 1 end |
#visit_retry(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1554 def visit_retry(node) end |
#visit_return(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1557 def visit_return(node) end |
#visit_sclass(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1560 def visit_sclass(node) visit(node.target) iseq.putnil singleton_iseq = with_child_iseq( iseq.singleton_class_child_iseq(node.location.start_line) ) do iseq.event(:RUBY_EVENT_CLASS) visit(node.bodystmt) iseq.event(:RUBY_EVENT_END) iseq.leave end iseq.defineclass( :singletonclass, singleton_iseq, DefineClass::TYPE_SINGLETON_CLASS ) end |
#visit_statements(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1581 def visit_statements(node) statements = node.body.select do |statement| case statement when Comment, EmbDoc, EndContent, VoidStmt false else true end end statements.empty? ? iseq.putnil : visit_all(statements) end |
#visit_string_concat(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1595 def visit_string_concat(node) value = node.left.parts.first.value + node.right.parts.first.value visit_string_literal( StringLiteral.new( parts: [TStringContent.new(value: value, location: node.location)], quote: node.left.quote, location: node.location ) ) end |
#visit_string_embexpr(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1607 def visit_string_embexpr(node) visit(node.statements) end |
#visit_string_literal(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1611 def visit_string_literal(node) if node.parts.length == 1 && node.parts.first.is_a?(TStringContent) visit(node.parts.first) else length = visit_string_parts(node) iseq.concatstrings(length) end end |
#visit_super(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1620 def visit_super(node) iseq.putself visit(node.arguments) iseq.invokesuper( YARV.calldata( nil, argument_parts(node.arguments).length, CallData::CALL_FCALL | CallData::CALL_ARGS_SIMPLE | CallData::CALL_SUPER ), nil ) end |
#visit_symbol_literal(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1634 def visit_symbol_literal(node) iseq.putobject(node.accept(RubyVisitor.new)) end |
#visit_symbols(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1638 def visit_symbols(node) if (compiled = RubyVisitor.compile(node)) iseq.duparray(compiled) else node.elements.each do |element| if element.parts.length == 1 && element.parts.first.is_a?(TStringContent) iseq.putobject(element.parts.first.value.to_sym) else length = visit_string_parts(element) iseq.concatstrings(length) iseq.intern end end iseq.newarray(node.elements.length) end end |
#visit_top_const_ref(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1657 def visit_top_const_ref(node) iseq.opt_getconstant_path(constant_names(node)) end |
#visit_tstring_content(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1661 def visit_tstring_content(node) if .frozen_string_literal? iseq.putobject(node.accept(RubyVisitor.new)) else iseq.putstring(node.accept(RubyVisitor.new)) end end |
#visit_unary(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1669 def visit_unary(node) method_id = case node.operator when "+", "-" "#{node.operator}@" else node.operator end visit_call( CommandCall.new( receiver: node.statement, operator: nil, message: Ident.new(value: method_id, location: Location.default), arguments: nil, block: nil, location: Location.default ) ) end |
#visit_undef(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1690 def visit_undef(node) node.symbols.each_with_index do |symbol, index| iseq.pop if index != 0 iseq.putspecialobject(PutSpecialObject::OBJECT_VMCORE) iseq.putspecialobject(PutSpecialObject::OBJECT_CBASE) visit(symbol) iseq.send(YARV.calldata(:"core#undef_method", 2)) end end |
#visit_unless(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1700 def visit_unless(node) statements_label = iseq.label visit(node.predicate) iseq.branchunless(statements_label) node.consequent ? visit(node.consequent) : iseq.putnil if last_statement? iseq.leave iseq.push(statements_label) visit(node.statements) else iseq.pop if node.consequent done_label = iseq.label iseq.jump(done_label) iseq.push(statements_label) visit(node.consequent) iseq.push(done_label) else iseq.push(statements_label) end end end |
#visit_until(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1726 def visit_until(node) predicate_label = iseq.label statements_label = iseq.label iseq.jump(predicate_label) iseq.putnil iseq.pop iseq.jump(predicate_label) iseq.push(statements_label) visit(node.statements) iseq.pop iseq.push(predicate_label) visit(node.predicate) iseq.branchunless(statements_label) iseq.putnil if last_statement? end |
#visit_var_field(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1745 def visit_var_field(node) case node.value when CVar, IVar name = node.value.value.to_sym iseq.inline_storage_for(name) when Ident name = node.value.value.to_sym if (local_variable = iseq.local_variable(name)) local_variable else iseq.local_table.plain(name) iseq.local_variable(name) end end end |
#visit_var_ref(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1762 def visit_var_ref(node) case node.value when Const iseq.opt_getconstant_path(constant_names(node)) when CVar name = node.value.value.to_sym iseq.getclassvariable(name) when GVar iseq.getglobal(node.value.value.to_sym) when Ident lookup = iseq.local_variable(node.value.value.to_sym) case lookup.local when LocalTable::BlockLocal iseq.getblockparam(lookup.index, lookup.level) when LocalTable::PlainLocal iseq.getlocal(lookup.index, lookup.level) end when IVar name = node.value.value.to_sym iseq.getinstancevariable(name) when Kw case node.value.value when "false" iseq.putobject(false) when "nil" iseq.putnil when "self" iseq.putself when "true" iseq.putobject(true) end end end |
#visit_vcall(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1797 def visit_vcall(node) iseq.putself iseq.send( YARV.calldata( node.value.value.to_sym, 0, CallData::CALL_FCALL | CallData::CALL_VCALL | CallData::CALL_ARGS_SIMPLE ) ) end |
#visit_when(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1809 def visit_when(node) visit(node.statements) end |
#visit_while(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1813 def visit_while(node) predicate_label = iseq.label statements_label = iseq.label iseq.jump(predicate_label) iseq.putnil iseq.pop iseq.jump(predicate_label) iseq.push(statements_label) visit(node.statements) iseq.pop iseq.push(predicate_label) visit(node.predicate) iseq.branchif(statements_label) iseq.putnil if last_statement? end |
#visit_word(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1832 def visit_word(node) if node.parts.length == 1 && node.parts.first.is_a?(TStringContent) visit(node.parts.first) else length = visit_string_parts(node) iseq.concatstrings(length) end end |
#visit_words(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1841 def visit_words(node) if .frozen_string_literal? && (compiled = RubyVisitor.compile(node)) iseq.duparray(compiled) else visit_all(node.elements) iseq.newarray(node.elements.length) end end |
#visit_xstring_literal(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1851 def visit_xstring_literal(node) iseq.putself length = visit_string_parts(node) iseq.concatstrings(node.parts.length) if length > 1 iseq.send( YARV.calldata( :`, 1, CallData::CALL_FCALL | CallData::CALL_ARGS_SIMPLE ) ) end |
#visit_yield(node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1864 def visit_yield(node) parts = argument_parts(node.arguments) visit_all(parts) iseq.invokeblock(YARV.calldata(nil, parts.length)) end |
#visit_zsuper(_node) ⇒ Object
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# File 'lib/syntax_tree/yarv/compiler.rb', line 1870 def visit_zsuper(_node) iseq.putself iseq.invokesuper( YARV.calldata( nil, 0, CallData::CALL_FCALL | CallData::CALL_ARGS_SIMPLE | CallData::CALL_SUPER | CallData::CALL_ZSUPER ), nil ) end |