Class: Mirah::JVM::Types::JavaSourceMirror::JavaSourceParser

Inherits:
ElementScanner6
  • Object
show all
Includes:
AnnotationValueVisitor
Defined in:
lib/mirah/jvm/types/source_mirror.rb

Instance Method Summary collapse

Constructor Details

#initialize(file, type_factory) ⇒ JavaSourceParser

TODO support generics



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 65

def initialize(file, type_factory)
  super()
  @file = file
  @type_factory = type_factory
  @mirrors = []
end

Instance Method Details

#anno_visitType(t, arg) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 191

def anno_visitType(t, arg)
  anno, name = arg
  anno.visit(name, BiteScript::ASM::Type.getType(type_desc(t)))
end

#classpath ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 82

def classpath
  [
    '-classpath',
    $CLASSPATH.to_a.join(java.io.File.pathSeparator)
  ]
end

#flags_from_modifiers(elem) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 205

def flags_from_modifiers(elem)
  flags = 0
  elem.modifiers.each do |modifier|
    flags |= BiteScript::ASM::Opcodes.const_get("ACC_#{modifier.name}")
  end
  flags
end

#get_fake_files ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 94

def get_fake_files
  mirah_typedefs = Set.new(@type_factory.known_types.values.reject {|t| !t.kind_of?(TypeDefinition)})
  files = [FakeJavaFile.new('org.mirah.infer', 'FakeClass', '@interface')]
  mirah_typedefs.each do |typedef|
    typedef.name =~ /^(?:(.+)\.)?([^.]+)$/
    package, name = $1, $2
    kind = if typedef.interface?
      'interface'
    else
      'class'
    end
    files << FakeJavaFile.new(package, name, kind)
  end
  files
end

#get_java_file(tools) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 89

def get_java_file(tools)
  fm = tools.get_standard_file_manager(nil, nil, nil)
  fm.get_java_file_objects(@file).to_a[0]
end

#internal_name(element) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 213

def internal_name(element)
  @element_utils.get_binary_name(element).to_s.tr('.', '/')
end

#internal_type_name(type) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 217

def internal_type_name(type)
  return nil if type.kind == TypeKind::NONE
  return @element_utils.get_binary_name(type.as_element).to_s.tr('.', '/')
end

#parse ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 72

def parse
  tools = ToolProvider.system_java_compiler
  units = [get_java_file(tools)] + get_fake_files
  @javac = tools.get_task(nil, nil, nil, classpath, nil, units)
  @element_utils = JavacElements.instance(@javac.context)
  elements = @javac.enter
  elements.each {|elem| scan(elem)}
  @mirrors
end

#type_desc(type) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 222

def type_desc(type)
  case type.kind.name
  when 'ARRAY'
    "[#{type_desc(type.component_type)}"
  when 'BOOLEAN'
    'Z'
  when 'BYTE'
    'B'
  when 'CHAR'
    'C'
  when 'DECLARED'
    name = internal_type_name(type)
    "L#{name};"
  when 'DOUBLE'
    'D'
  when 'FLOAT'
    'F'
  when 'INT'
    'I'
  when 'LONG'
    'J'
  when 'SHORT'
    'S'
  when 'VOID'
    'V'
  when 'EXECUTABLE'
    desc = '('
    type.parameter_types.each do |param|
      desc << type_desc(param)
    end
    desc << ')'
    desc << type_desc(type.return_type)
  else
    raise ArgumentError, "Unsupported type #{type.kind.name}"
  end
end

#visitAnnotation(elem, arg = nil) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 149

def visitAnnotation(elem, arg=nil)
  desc = type_desc(elem.annotation_type)
  if arg.nil?
    anno = @current.visitAnnotation(desc, 0)
  else
    builder, name = arg
    anno = builder.visitAnnotation(name, desc)
  end
  elem.element_values.each do |method, value|
    name = method.simple_name
    visit(value, [anno, name])
  end
end

#visitArray(values, arg) ⇒ Object

AnnotationValueVisitor



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 164

def visitArray(values, arg)
  anno, name = arg
  array = anno.visitArray(name)
  values.each do |value|
    visit(value, [array, name])
  end
end

#visitBoolean(val, arg) ⇒ Object Also known as: visitByte, visitChar, visitDouble, visitFloat, visitInt, visitLong, visitShort, visitString, visitUnknown 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 172

def visitBoolean(val, arg)
  anno, name = arg
  anno.visit(name, val)
end

#visitEnumConstant(c, arg) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 186

def visitEnumConstant(c, arg)
  anno, name = arg
  anno.visitEnum(name, type_desc(c.as_type), c.simple_name)
end

#visitExecutable(method, arg) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 138

def visitExecutable(method, arg)
  # TODO varags
  flags = flags_from_modifiers(method)
  exceptions = method.thrown_types.map {|t| internal_type_name(t)}
  desc = type_desc(method.as_type)
  mbuilder = @current.visitMethod(flags, method.simple_name, desc, nil, exceptions)
  with mbuilder do
    method.annotation_mirrors.each {|anno| visitAnnotation(anno)}
  end
end

#visitType(elem, arg) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 110

def visitType(elem, arg)
  return anno_visitType(elem, arg) if elem.kind_of?(TypeMirror)
  if elem.annotation_mirrors.any? {|a| a.toString == '@org.mirah.infer.FakeClass'}
    return
  end
  superclass = internal_type_name(elem.superclass) || 'java/lang/Object'
  interfaces = elem.interfaces.map {|i| internal_type_name(i)}
  flags = flags_from_modifiers(elem)
  builder = BiteScript::ASM::ClassMirror::Builder.new
  builder.visit(0, flags, internal_name(elem), nil, superclass, interfaces)
  with(builder) do
    elem.annotation_mirrors.each {|anno| visitAnnotation(anno)}
    super(elem, arg)
  end
  @mirrors << builder.mirror
  builder.mirror
end

#visitVariable(field, arg) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 128

def visitVariable(field, arg)
  flags = flags_from_modifiers(field)
  type = type_desc(field.as_type)
  fbuilder = @current.visitField(
    flags, field.simple_name, type, nil, field.constant_value)
  with fbuilder do
    field.annotation_mirrors.each {|anno| visitAnnotation(anno)}
  end
end

#with(elem) ⇒ Object 



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# File 'lib/mirah/jvm/types/source_mirror.rb', line 196

def with(elem)
  saved, @current = @current, elem
  begin
    yield
  ensure
    @current = saved
  end
end