1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
"""Comparative program understanding between shell implementation snippets."""
import random
import os
from timeit import default_timer as timer
from tactic_utils import Fix, ApplyRulesMatching
from ui import serve
from lazy_structure import LazyStructure
from analyzelib import LoadDocument, AnalyzeCodelets
from analogy_utils import Analogy
def Main():
"""Runs the analogy-maker and displays the output."""
start = timer()
print("Setting up the structure...")
random.seed(24)
demo_path = os.environ.get("BUILD_WORKSPACE_DIRECTORY", ".")
demo_path += "/examples/program_analysis/paper_demos"
extra_special = [
"static_shell_builtins", "shell_builtins", "builtin_address_internal",
"builtin_datas", "builtin_lookup", "_builtin", "builtin_"]
bash = LoadDocument(f"{demo_path}/bash.txt", extra_special=extra_special)
fish = LoadDocument(f"{demo_path}/fish.txt", extra_special=extra_special)
# These could be provided, eg., by an AST, or we could even have Sifter
# rewrite rules which identify them. We can also make each the membor of
# its sub-struct then make the sub-struct a member of the parent struct.
bash.AnnotateChunks(dict({
bash.FindChunks("shell_builtins")[0]: "/:Semantics:Collection",
bash.FindChunks("cd")[2]: "/:Semantics:CollectionMember",
}))
fish.AnnotateChunks(dict({
fish.FindChunks("builtin_datas")[0]: "/:Semantics:Collection",
fish.FindChunks("cd")[2]: "/:Semantics:CollectionMember",
}))
bash.AnnotateChunks(dict({
bash.FindChunks("shell_builtins")[-1]: "/:Semantics:FunctionBody",
bash.FindChunks("builtin_address_internal")[-1]: "/:Semantics:Function",
}))
fish.AnnotateChunks(dict({
fish.FindChunks("builtin_datas")[-1]: "/:Semantics:FunctionBody",
fish.FindChunks("builtin_lookup")[-1]: "/:Semantics:Function",
}))
structure = LazyStructure([bash, fish], AnalyzeCodelets)
for document in structure.documents:
for chunk in document.chunks:
structure.ChunkToNode(document, chunk)
print("Identifying word pairs...")
for word in ["cd", "shell_builtins", "builtin_datas"]:
ApplyRulesMatching(structure.rt, "SameWord", dict({
"/:Rules:SameWord:MustMap:Word": structure.dictionary[word].full_name,
}))
print("Finding the analogy...")
analogy = Analogy.Begin(structure.rt, dict({
"/:Mapper:NoSlipRules:A":
structure.NodeOfChunk(bash, bash.FindChunk("cd")),
"/:Mapper:NoSlipRules:B":
structure.NodeOfChunk(fish, fish.FindChunk("cd")),
}), extend_here=False)
Fix(analogy.ExtendMap,
["/:Semantics:CollectionMember", "/:Semantics:Function",
"/:Semantics:FunctionBody", "/:SameWord"])
print(timer() - start)
serve.start_server(structure)
if __name__ == "__main__":
Main()
|
