[GitHub] [incubator-tvm] ZihengJiang commented on a change in pull request #6779: [WIP] Object Schema

[GitBox <gi...@apache.org>]

ZihengJiang commented on a change in pull request #6779:
URL: https://github.com/apache/incubator-tvm/pull/6779#discussion_r516311228



##########
File path: schema/python/schema/parser.py
##########
@@ -0,0 +1,123 @@
+from .registry import register, lookup
+from .ir import ObjectDef, ObjectRefDef, FieldDef
+from .codegen import generate
+from . import typing as ty
+
+import re
+import ast
+import inspect
+
+
+# root class
+class Object:
+    pass
+
+class ObjectRef:
+    pass
+
+_ObjectBaseDef = ObjectDef("Object", "ObjectRef", base=None)
+register(_ObjectBaseDef)
+
+_ObjectRefBaseDef = ObjectRefDef("ObjectRef", base=None,
+    internal=_ObjectBaseDef)
+register(_ObjectRefBaseDef)
+
+
+class Parser(ast.NodeVisitor):
+    def __init__(self):
+        self.type_key = None
+        self.default_visit_attrs = True
+        self.default_sequal_reduce = True
+        self.default_shash_reduce = True
+        self.fields = []
+
+    def visit_Assign(self, node):
+        target = node.targets[0]
+        value = node.value
+        if target.id == 'type_key':
+            self.type_key = value.s
+        elif target.id == 'default_visit_attrs':
+            self.default_visit_attrs = value.value
+        elif target.id == 'default_sequal_reduce':
+            self.default_sequal_reduce = value.value
+        elif target.id == 'default_shash_reduce':
+            self.default_shash_reduce = value.value
+        self.generic_visit(node)
+
+    def visit_AnnAssign(self, node):
+        name = node.target.id
+        type_name = node.annotation.attr
+        type_ = ty.get_type(type_name)
+        self.fields.append(FieldDef(name, type_))
+        self.generic_visit(node)
+
+
+def parse_comment(text):
+    ret = {}
+    lines = text.split('\n')
+    block_delimiter = [0]
+    for lnum, line in enumerate(lines):
+        result = re.match(r"\s*-+", line)
+        if result:
+            block_delimiter.append(lnum - 1)
+    block_delimiter.append(len(lines))
+    ret['Root'] = lines[block_delimiter[0]: block_delimiter[1]]
+    for idx in range(1, len(block_delimiter) - 1):
+        key = lines[block_delimiter[idx]].strip()
+        ret[key] = lines[block_delimiter[idx]+2: block_delimiter[idx+1]]
+
+    for key in ret:
+        lines = [line.strip() for line in ret[key]]
+        # remove space lines at beginning and the end
+        while lines and not lines[0]:
+            lines.pop(0)
+        while lines and not lines[-1]:
+            lines.pop()
+        ret[key] = lines
+
+    return ret
+
+from json import JSONEncoder
+
+
+def declare(cls):
+    print('\n\n')

Review comment:
       This will be deleted. Current code is still WIP.




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