Created
December 28, 2013 03:39
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nand2tetris HDL parser using Instaparse
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(ns stuff | |
(:require [instaparse.core :as insta])) | |
(def hdl-parse | |
(insta/parser | |
"CHIP = <'CHIP'> <SPACE+> NAME <SPACE*> <'{'> <SPACE*> INSPEC <SPACE*> OUTSPEC <SPACE*> PARTS <SPACE*> <'}'> | |
INSPEC = <'IN'> <SPACE+> (SPECITEM <SPACE*> <','?> <SPACE*>)* <';'> | |
OUTSPEC = <'OUT'> <SPACE+> (SPECITEM <SPACE*> <','?> <SPACE*>)* <';'> | |
PARTS = <'PARTS:'> <SPACE*> (PART <SPACE*>)* | |
PART = NAME <'('> (<SPACE*> PARTIO <','>?)+ <');'> | |
PARTIO = NAME <SPACE*> <'='> <SPACE*> NAME PINWIDTH? | |
PINWIDTH = <'['> NUMBER <']'> | |
SPECITEM = NAME PINWIDTH? | |
NAME = #'[a-zA-Z][a-zA-Z0-9]*' | |
COMMENT = '//' #'[^\n]*' '\n' | |
SPACE = ' '|'\t'|'\n'|'\r' | |
<NUMBER> = '-'? ('0'|'1'|'2'|'3'|'4'|'5'|'6'|'7'|'8'|'9')+")) | |
(def input0 | |
"CHIP ALU { | |
IN x[16], y[16], zx, nx, zy, ny, f, no; | |
OUT out[16], zr, ng; | |
PARTS: | |
Zero16(in = zx, out = zeros); | |
Mux16(a = x, b = zeros, sel = zx, out = selectedx); | |
Not16(in = selectedx, out = notselectedx); | |
Mux16(a = selectedx, b = notselectedx, sel = nx, out = realx); | |
}") | |
(def input1 "CHIP And16 { | |
IN a[16], b[16]; | |
OUT out[16]; | |
PARTS: | |
And(a = a[0], b = b[0], out = out[0]); | |
And(a = a[1], b = b[1], out = out[1]); | |
And(a = a[2], b = b[2], out = out[2]); | |
And(a = a[3], b = b[3], out = out[3]); | |
And(a = a[4], b = b[4], out = out[4]); | |
And(a = a[5], b = b[5], out = out[5]); | |
And(a = a[6], b = b[6], out = out[6]); | |
And(a = a[7], b = b[7], out = out[7]); | |
And(a = a[8], b = b[8], out = out[8]); | |
And(a = a[9], b = b[9], out = out[9]); | |
And(a = a[10], b = b[10], out = out[10]); | |
And(a = a[11], b = b[11], out = out[11]); | |
And(a = a[12], b = b[12], out = out[12]); | |
And(a = a[13], b = b[13], out = out[13]); | |
And(a = a[14], b = b[14], out = out[14]); | |
And(a = a[15], b = b[15], out = out[15]); | |
}") | |
;(hdl-parse input0) | |
;(hdl-parse input1) |
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