File size: 1,748 Bytes
0f034b9 | 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 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | #!/usr/bin/awk -f
# Copyright (c) 2020 International Business Machines Corporation
# Prepared by: Geert Janssen <geert@us.ibm.com>
# Expects a tokenizer generated csv file as input.
# Filters out certain operators and keywords and encodes them
# as numbers in the range [0:16], one per line.
# Hiroki Ohashi, Yutaka Watanobe,
# "Convolutional Neural Network for Classification of Source Codes,"
# 2019 IEEE 13th Int. Symp. on Embedded Multicore/Many-core Systems-on-Chip
BEGIN {
# Assignment operator
encode["="]=0
encode["+"]=1
encode["-"]=1
encode["*"]=1
encode["/"]=1
encode["%"]=1
# Bitwise Operators
encode["&"]=2
encode["|"]=2
encode["^"]=2
encode["~"]=2
encode["<<"]=2
encode[">>"]=2
# Compound arithmetic assignment operators
encode["+="]=3
encode["-="]=3
encode["*="]=3
encode["/="]=3
encode["%="]=3
encode["++"]=3
encode["--"]=3
# Compound bitwise assignment operators
encode["&="]=4
encode["|="]=4
encode["^="]=4
encode["<<="]=4
encode[">>="]=4
# Comparison operators
encode["=="]=5
encode["!="]=5
encode["<"]=5
encode["<="]=5
encode[">"]=5
encode[">="]=5
# Logical operators
encode["&&"]=6
encode["||"]=6
encode["!"]=6
# Others
encode["if"]=7
encode["else"]=8
encode["for"]=9
encode["while"]=10
encode["("]=11
encode[")"]=12
encode["{"]=13
encode["}"]=14
encode["["]=15
encode["]"]=16
FS=","
}
{
# read csv
# check for operator and keyword in column 3 (class)
if ($3 == "operator" || $3 == "keyword") {
# look up field value of column 4 (token)
if ($4 in encode) {
code=encode[$4]
#print $4
print code
}
}
}
END {}
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