# Services to generate extern class `in "Java"`
module code_generator
+import gen_nit
+
intrude import model
class CodeGenerator
# Module declaration
var module_name = module_name
- if module_name != null then file_out.write "module {module_name}\n"
+ if module_name != null then file_out.write "module {module_name} is no_warning(\"useless-superclass\")\n"
file_out.write "\n"
# All importations
file_out.write imports.join("\n")
file_out.write "\n"
- for key, jclass in model.classes do
- # Skip anonymous classes
- if jclass.class_type.is_anonymous then continue
+ # Sort classes from top-level classes (java.lang.Object) to leaves
+ var standard_classes = new Array[JavaClass]
+ for name, jclass in model.classes do
+ if not jclass.class_type.is_anonymous then standard_classes.add jclass
+ end
+ var linearized = model.class_hierarchy.linearize(standard_classes)
+ for jclass in linearized do
# Skip classes with an invalid name at the Java language level
if jclass.class_type.extern_equivalent.has("-") then continue
generate_class_header(jclass)
- for id, signatures in jclass.methods do
- for signature in signatures do if not signature.is_static then
- generate_method(jclass, id, id, signature.return_type, signature.params)
- file_out.write "\n"
+ if not sys.opt_no_properties.value then
+
+ for id, signatures in jclass.local_intro_methods do
+ for signature in signatures do
+ assert not signature.is_static
+ generate_method(jclass, id, id, signature.return_type, signature.params)
+ file_out.write "\n"
+ end
end
- end
- # Constructors
- for constructor in jclass.constructors do
- var complex = jclass.constructors.length != 1 and constructor.params.not_empty
- var base_name = if complex then "from" else ""
- var name = jclass.nit_name_for(base_name, constructor.params, complex, false)
+ # Constructors
+ for constructor in jclass.constructors do
+ var complex = jclass.constructors.length != 1 and constructor.params.not_empty
+ var base_name = if complex then "from" else ""
+ var name = jclass.nit_name_for(base_name, constructor.params, complex, false, local_only=true)
- generate_constructor(jclass, constructor, name)
- end
+ generate_constructor(jclass, constructor, name)
+ end
- # Attributes
- for id, attribute in jclass.attributes do if not attribute.is_static then
- generate_getter_setter(jclass, id, attribute)
+ # Attributes
+ for id, attribute in jclass.attributes do if not attribute.is_static then
+ generate_getter_setter(jclass, id, attribute)
+ end
end
# JNI services
# Close the class
file_out.write "end\n\n"
- # Static functions as top-level methods
- var static_functions_prefix = jclass.class_type.extern_name.to_snake_case
- for id, signatures in jclass.methods do
- for signature in signatures do if signature.is_static then
- var nit_id = static_functions_prefix + "_" + id
- generate_method(jclass, id, nit_id, signature.return_type, signature.params, is_static=true)
- file_out.write "\n"
+ if not sys.opt_no_properties.value then
+
+ # Static functions as top-level methods
+ var static_functions_prefix = jclass.class_type.extern_name.to_snake_case
+ for id, signatures in jclass.methods do
+ for signature in signatures do if signature.is_static then
+ var nit_id = static_functions_prefix + "_" + id
+ generate_method(jclass, id, nit_id, signature.return_type, signature.params, is_static=true)
+ file_out.write "\n"
+ end
end
- end
- # Static attributes as top-level getters and setters
- for id, attribute in jclass.attributes do if attribute.is_static then
- generate_getter_setter(jclass, id, attribute)
+ # Static attributes as top-level getters and setters
+ for id, attribute in jclass.attributes do if attribute.is_static then
+ generate_getter_setter(jclass, id, attribute)
+ end
end
# Primitive arrays
file_out.close
end
+ # Serialize `model` to a file next to `file_name`
+ fun write_model_to_file
+ do
+ if not sys.opt_save_model.value then return
+
+ # Write the model to file next to the Nit module
+ var model_path = file_name.strip_extension + ".jwrapper.bin"
+ var model_stream = model_path.to_path.open_wo
+ var serializer = new BinarySerializer(model_stream)
+ serializer.serialize model
+ model_stream.close
+ end
+
# License for the header of the generated Nit module
var license = """
# This file is part of NIT (http://www.nitlanguage.org).
var java_type = java_class.class_type
var nit_type = model.java_to_nit_type(java_type)
- var supers = ["super JavaObject"]
+ var super_java_types = new HashSet[JavaType]
+ super_java_types.add_all java_class.extends
+ super_java_types.add_all java_class.implements
+
+ var supers = new Array[String]
+ var effective_supers = 0
+ for java_super in super_java_types do
+ var nit_super = model.java_to_nit_type(java_super)
+
+ # Comment out unknown types
+ var c = ""
+ if not nit_super.is_known and comment_unknown_types then c = "# "
+
+ supers.add "{c}super {nit_super}"
+ if c != "# " then effective_supers += 1
+ end
+
+ if effective_supers == 0 then
+ if java_class.class_type.package_name == "java.lang.Object" or
+ not model.knows_the_object_class then
+ supers.add "super JavaObject"
+ else supers.add "super Java_lang_Object"
+ end
file_out.write """
# Java class: {{{java_type}}}
# List of Nit keywords
#
# These may also be keywords in Java, but there they would be used capitalized.
- private var nit_keywords = new HashSet[String].from(["abort", "abstract", "and", "assert",
- "break", "class", "continue", "do", "else", "end", "enum", "extern", "false", "implies",
- "import", "init", "interface", "intrude", "if", "in", "is", "isa", "isset", "for", "label",
- "loop", "module", "new", "not", "null", "nullable", "or", "package", "private",
- "protected", "public", "return", "self", "super", "then", "true", "type", "var", "while",
-
- # Top-level methods
- "class_name", "get_time", "hash", "inspect", "inspect_head", "is_same_type",
- "is_same_instance", "object_id", "output", "output_class_name", "sys", "to_s",
-
- # Pointer or JavaObject methods
- "free"])
+ private var nit_keywords: Set[String] is lazy do
+ var set = new HashSet[String]
+ set.add_all keywords
+ set.add_all methods_in_pointer
+ return set
+ end
# Name of methods used at the top-level
#
# Used by `JavaClass::nit_name_for` with static properties.
private var top_level_used_names = new HashSet[String]
+
+ # Option to _not_ generate properties (static or from classes)
+ var opt_no_properties = new OptionBool("Do not wrap properties, only classes and basic services", "-n", "--no-properties")
+
+ # Should the model be serialized to a file?
+ var opt_save_model = new OptionBool("Save the model next to the generated Nit module", "-s", "--save-model")
end
redef class String
redef class JavaClass
# Property names used in this class
- private var used_names = new HashSet[String]
+ private var used_names = new HashSet[String] is serialize
# Get an available property name for the Java property with `name` and parameters
#
# If `use_parameters_name` then expect that there will be conflicts,
# so use the types of `parameters` to build the name.
- private fun nit_name_for(name: String, parameters: Array[JavaType], use_parameters_name: Bool, is_static: Bool): String
+ private fun nit_name_for(name: String, parameters: Array[JavaType], use_parameters_name: Bool, is_static: Bool, local_only: nullable Bool): String
do
# Append the name of each parameter
if use_parameters_name then
for param in parameters do
- name += "_" + param.id
+ var id = param.id
+ id += "Array"*param.array_dimension
+ name += "_" + id
end
end
- # Set of property names, local or top-level
+ # Set of sets of property names, local or top-level
+ var local_used_names
var used_names
if is_static then
+ # Top-level methods
+ local_used_names = sys.top_level_used_names
used_names = sys.top_level_used_names
- else used_names = self.used_names
+ else if local_only == true then
+ # Local only: constructors
+ local_used_names = self.used_names
+ used_names = self.used_names
+ else
+ # Avoid conflicts with all super classes
+ local_used_names = self.used_names
+ used_names = new HashSet[String]
+ for sup in in_hierarchy.greaters do
+ used_names.add_all sup.used_names
+ end
+ end
# As a last resort, append numbers to the name
var base_name = name
count += 1
end
- used_names.add name
+ local_used_names.add name
return name
end
end
nitlanguage / nit.git / blobdiff