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pykWasm.py
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#!/usr/bin/env python3
import difflib
import json
import os
import pyk
import sys
import tempfile
from pyk.kast import KApply, KConstant, KRewrite, KSequence, KToken, KVariable, _notif, _warning, _fatal
################################################################################
# Should be Upstreamed #
################################################################################
def flattenAnd(input):
if not (pyk.isKApply(input) and input['label'] == '#And'):
return [input]
output = []
work = [ arg for arg in input['args'] ]
while len(work) > 0:
first = work.pop(0)
if pyk.isKApply(first) and first['label'] == '#And':
work.extend(first['args'])
else:
output.append(first)
return output
def extractTermAndConstraint(input):
term_and_constraints = flattenAnd(input)
term = [ r for r in term_and_constraints if pyk.isKApply(r) and r['label'] == '<generatedTop>' ][0]
constraints = [ r for r in term_and_constraints if not (pyk.isKApply(r) and r['label'] == '<generatedTop>') ]
constraint = KConstant('#True')
for c in constraints:
constraint = KApply('#And', [c, constraint])
return (term, constraint)
def kompile_definition(definition_dir, backend, main_defn_file, main_module, kompileArgs = [], teeOutput = True, kRelease = None):
command = 'kompile'
if kRelease is not None:
command = kRelease + '/bin/' + command
elif 'K_RELEASE' in os.environ:
command = os.environ['K_RELEASE'] + '/bin/' + command
kCommand = [ command , '--backend' , backend , '--directory' , definition_dir , '-I' , definition_dir , '--main-module' , main_module , main_defn_file ] + kompileArgs
_notif('Running: ' + ' '.join(kCommand))
return pyk._teeProcessStdout(kCommand, tee = teeOutput)
def getRuleById(definition, rule_id):
for module in definition['modules']:
for sentence in module['localSentences']:
if pyk.isKRule(sentence) and 'att' in sentence:
atts = sentence['att']['att']
if 'UNIQUE_ID' in atts and atts['UNIQUE_ID'] == rule_id:
return sentence
def _runK2(command, definition, kArgs = [], teeOutput = True, kRelease = None):
if kRelease is not None:
command = kRelease + '/bin/' + command
elif 'K_RELEASE' in os.environ:
command = os.environ['K_RELEASE'] + '/bin/' + command
kCommand = [ command , definition ] + kArgs
_notif('Running: ' + ' '.join(kCommand))
return pyk._teeProcessStdout(kCommand, tee = teeOutput)
def mergeRulesKoreExec(definition_dir, ruleList, kArgs = [], teeOutput = True, kRelease = None, symbolTable = None, definition = None):
if symbolTable is not None and definition is not None:
_notif('Merging rules:')
for rule in ruleList:
print()
print('rule: ' + rule)
print(prettyPrintRule(getRuleById(definition, rule), symbolTable))
sys.stdout.flush()
with tempfile.NamedTemporaryFile(mode = 'w') as tempf:
tempf.write('\n'.join(ruleList))
tempf.flush()
sys.stdout.write('\n'.join(ruleList))
sys.stdout.flush()
return _runK2('kore-exec', definition_dir, kArgs = ['--merge-rules', tempf.name] + kArgs, teeOutput = teeOutput, kRelease = kRelease)
def mergeRules(definition_dir, main_defn_file, main_module, subsequence, symbolTable = None, definition = None):
(returnCode, stdout, stderr) = mergeRulesKoreExec(definition_dir + '/' + main_defn_file + '-kompiled/definition.kore', subsequence, kArgs = ['--module', main_module], symbolTable = symbolTable, definition = definition)
if returnCode == 0:
with tempfile.NamedTemporaryFile(mode = 'w') as tempf:
tempf.write(stdout)
tempf.flush()
(returnCode, stdout, stderr) = pyk.kast(definition_dir, tempf.name, kastArgs = ['--input', 'kore', '--output', 'json'])
if returnCode != 0:
print(stderr)
_warning('Cannot merge rules!')
return None
merged_rule = json.loads(stdout)['term']
(lhs_term, lhs_constraint) = extractTermAndConstraint(merged_rule['lhs'])
(rhs_term, rhs_constraint) = extractTermAndConstraint(merged_rule['rhs'])
gen_rule = pyk.KRule(KRewrite(lhs_term, rhs_term), requires = lhs_constraint, ensures = rhs_constraint)
if symbolTable is not None:
_notif('Merged rule:')
print(prettyPrintRule(gen_rule, symbolTable))
sys.stdout.flush()
return gen_rule
else:
print(stderr)
_warning('Cannot merge rules!')
return None
def tryMergeRules(definition_dir, main_defn_file, main_module, rule_sequences):
merged_rules = []
for rule_sequence in rule_sequences:
gen_rule = mergeRules(definition_dir, main_defn_file, main_module, rule_sequence)
if gen_rule is not None:
merged_rules.append(gen_rule)
return merged_rules
################################################################################
# Load Definition Specific Stuff #
################################################################################
WASM_definition_main_file = 'kwasm-polkadot-host'
WASM_definition_main_module = 'KWASM-POLKADOT-HOST'
WASM_definition_llvm_no_coverage_dir = '.build/defn/kwasm/llvm'
WASM_definition_llvm_coverage_dir = '.build/defn/coverage/llvm'
WASM_definition_haskell_no_coverage_dir = '.build/defn/kwasm/haskell'
WASM_definition_haskell_coverage_dir = '.build/defn/coverage/haskell'
WASM_definition_llvm_no_coverage = pyk.readKastTerm(WASM_definition_llvm_no_coverage_dir + '/' + WASM_definition_main_file + '-kompiled/compiled.json')
WASM_definition_llvm_coverage = pyk.readKastTerm(WASM_definition_llvm_coverage_dir + '/' + WASM_definition_main_file + '-kompiled/compiled.json')
WASM_definition_haskell_no_coverage = pyk.readKastTerm(WASM_definition_haskell_no_coverage_dir + '/' + WASM_definition_main_file + '-kompiled/compiled.json')
WASM_definition_haskell_coverage = pyk.readKastTerm(WASM_definition_haskell_coverage_dir + '/' + WASM_definition_main_file + '-kompiled/compiled.json')
WASM_symbols_llvm_no_coverage = pyk.buildSymbolTable(WASM_definition_llvm_no_coverage)
WASM_symbols_llvm_coverage = pyk.buildSymbolTable(WASM_definition_llvm_coverage)
WASM_symbols_haskell_no_coverage = pyk.buildSymbolTable(WASM_definition_haskell_no_coverage)
WASM_symbols_haskell_coverage = pyk.buildSymbolTable(WASM_definition_haskell_coverage)
for symbolTable in [WASM_symbols_llvm_no_coverage, WASM_symbols_llvm_coverage, WASM_symbols_haskell_no_coverage, WASM_symbols_haskell_coverage]:
symbolTable['#init_locals___WASM_Instr_Int_ValStack'] = lambda k, s: '#init_locals ' + k + ' ' + s
symbolTable['init_locals__WASM_Instr_ValStack'] = lambda s: 'init_locals ' + s
symbolTable['init_local___WASM_Instr_Val_ValStack'] = lambda k, v: 'init_local ' + k + ' ' + v
symbolTable['#dotsLeft'] = lambda k: '... ' + k
symbolTable['#dotsRight'] = lambda k: k + ' ...'
symbolTable['#dotsBoth'] = lambda k: '... ' + k + ' ...'
symbolTable['_in_keys(_)_MAP_Bool_KItem_Map'] = lambda k, s: k + ' in_keys( ' + s + ' )'
def insertDots(k):
(config, subst) = pyk.splitConfigFrom(k)
if pyk.isKSequence(subst['INSTRS_CELL']) and pyk.isKVariable(subst['INSTRS_CELL']['items'][-1]) and subst['INSTRS_CELL']['items'][-1]['name'].startswith('DotVar'):
subst['INSTRS_CELL'] = KApply('#dotsRight', [KSequence(subst['INSTRS_CELL']['items'][0:-1])])
return pyk.substitute(config, subst)
def prettyPrintRule(kRule, symbolTable):
newRule = pyk.KRule(pyk.pushDownRewrites(kRule['body']), requires = kRule['requires'], ensures = kRule['ensures'], att = kRule['att'])
minRule = pyk.minimizeRule(newRule)
ruleBody = minRule['body']
if pyk.isKApply(ruleBody) and ruleBody['label'] == '<generatedTop>':
ruleBody = ruleBody['args'][0]
minRule['body'] = insertDots(ruleBody)
return pyk.prettyPrintKast(minRule, symbolTable)
################################################################################
# Runner Wrappers #
################################################################################
def kast(inputJson, *kastArgs):
return pyk.kastJSON(WASM_definition_llvm_no_coverage_dir, inputJson, kastArgs = list(kastArgs))
def krun(inputJson, *krunArgs):
return pyk.krunJSON(WASM_definition_llvm_no_coverage_dir, inputJson, krunArgs = list(krunArgs))
def findCoverageFiles(path):
files = os.listdir(path)
return [ path + '/' + f for f in files if f.endswith('_coverage.txt') ]
def krunCoverage(inputJson, *krunArgs):
for f in findCoverageFiles(WASM_definition_llvm_coverage_dir + '/' + WASM_definition_main_file + '-kompiled'):
os.remove(f)
ret = pyk.krunJSON(WASM_definition_llvm_coverage_dir, inputJson, krunArgs = list(krunArgs))
[ coverageFile ] = findCoverageFiles(WASM_definition_llvm_coverage_dir + '/' + WASM_definition_main_file + '-kompiled')
return coverageFile
def kprove(inputJson, *krunArgs):
return pyk.kproveJSON(WASM_definition_llvm_no_coverage, inputJson, kproveArgs = list(kproveArgs))
################################################################################
# Main Functionality #
################################################################################
def get_init_config():
init_term = { 'format': 'KAST', 'version': 1, 'term': KConstant('.List{"___WASM_Stmts_Stmt_Stmts"}_Stmts') }
(_, simple_config, _) = krun(init_term)
return pyk.splitConfigFrom(simple_config)
if __name__ == '__main__':
(generatedTop, initSubst) = get_init_config()
initial_configuration = pyk.substitute(generatedTop, initSubst)
kast_json = { 'format': 'KAST', 'version': 1, 'term': initial_configuration }
fastPrinted = pyk.prettyPrintKast(initial_configuration['args'][0], WASM_symbols_llvm_no_coverage)
_notif('fastPrinted output')
print(fastPrinted)