--- /dev/null
+#
+# Copyright 2012-2015 Bronto Software, Inc. and contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+"""
+Convert Java syntax tree nodes to string representations.
+
+"""
+
+import javalang
+
+from .util import StringBuilder
+
+# The order for displaying modifiers
+__modifiers_order = ('public', 'protected', 'private', 'static', 'abstract', 'final',
+ 'native', 'synchronized', 'transient', 'volatile', 'strictfp')
+
+def formatter(f):
+ def _f(node, output=None, **kwargs):
+ if output is None:
+ output = StringBuilder()
+
+ f(node, output, **kwargs)
+ return output
+ return _f
+
+def output_list(f, items, output=None, sep=', '):
+ if items:
+ f(items[0], output)
+ for item in items[1:]:
+ output.append(sep)
+ f(item, output)
+
+@formatter
+def output_annotation(annotation, output):
+ output.append('@')
+ output.append(annotation.name)
+ output.append(' ')
+
+@formatter
+def output_type(type, output, with_generics=True):
+ if not type:
+ output.append('void')
+ return
+
+ if type.dimensions:
+ dim = '[]' * len(type.dimensions)
+ else:
+ dim = ''
+
+ if isinstance(type, javalang.tree.BasicType):
+ output.append(type.name)
+ else:
+ while type:
+ output.append(type.name)
+
+ if with_generics:
+ output_type_args(type.arguments, output)
+
+ type = type.sub_type
+
+ if type:
+ output.append('.')
+ output.append(dim)
+
+@formatter
+def output_exception(exception, output):
+ output.append(exception)
+
+@formatter
+def output_type_arg(type_arg, output):
+ if type_arg.pattern_type == '?':
+ output.append('?')
+ else:
+ if type_arg.pattern_type:
+ output.append('? ')
+ output.append(type_arg.pattern_type)
+ output.append(' ')
+
+ output_type(type_arg.type, output)
+
+@formatter
+def output_type_args(type_args, output):
+ if type_args:
+ output.append('<')
+ output_list(output_type_arg, type_args, output, ', ')
+ output.append('>')
+
+@formatter
+def output_type_param(type_param, output):
+ output.append(type_param.name)
+
+ if type_param.extends:
+ output.append(' extends ')
+ output_list(output_type, type_param.extends, output, ' & ')
+
+@formatter
+def output_type_params(type_params, output):
+ if type_params:
+ output.append('<')
+ output_list(output_type_param, type_params, output, ', ')
+ output.append('>')
+
+@formatter
+def output_declaration(declaration, output):
+ for annotation in declaration.annotations:
+ output_annotation(annotation, output)
+
+ output_modifiers(declaration.modifiers, output)
+ output.append(' ')
+
+ if isinstance(declaration, javalang.tree.ClassDeclaration):
+ output.append('class ')
+ elif isinstance(declaration, javalang.tree.EnumDeclaration):
+ output.append('enum ')
+ elif isinstance(declaration, javalang.tree.InterfaceDeclaration):
+ output.append('interface ')
+ elif isinstance(declaration, javalang.tree.AnnotationDeclaration):
+ output.append('@interface ')
+
+ output.append(declaration.name)
+
+ if isinstance(declaration, (javalang.tree.ClassDeclaration, javalang.tree.InterfaceDeclaration)):
+ output_type_params(declaration.type_parameters, output)
+
+ if isinstance(declaration, javalang.tree.ClassDeclaration) and declaration.extends:
+ output.append(' extends ')
+ output_type(declaration.extends, output)
+
+ if isinstance(declaration, javalang.tree.InterfaceDeclaration) and declaration.extends:
+ output.append(' extends ')
+ output_list(output_type, declaration.extends, output, ', ')
+
+ if isinstance(declaration, (javalang.tree.ClassDeclaration, javalang.tree.EnumDeclaration)) and declaration.implements:
+ output.append(' implements ')
+ output_list(output_type, declaration.implements, output, ', ')
+
+@formatter
+def output_formal_param(param, output):
+ output_type(param.type, output)
+
+ if param.varargs:
+ output.append('...')
+
+ output.append(' ')
+ output.append(param.name)
+
+@formatter
+def output_modifiers(modifiers, output):
+ ordered_modifiers = [mod for mod in __modifiers_order if mod in modifiers]
+ output_list(lambda mod, output: output.append(mod), ordered_modifiers, output, ' ')
