mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-12 09:20:36 +00:00
507 lines
17 KiB
Python
507 lines
17 KiB
Python
#!/usr/bin/env python3
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import struct
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from sys import argv, stderr
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from os import path
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from string import whitespace
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import re
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import math
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from tempfile import NamedTemporaryFile
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from subprocess import call
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import json
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atom_end = set('()"' + whitespace)
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def parse(sexp):
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sexp = re.sub(r'(?m)\(;.*;\)', '', re.sub(r'(;;.*)', '', sexp))
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stack, i, length = [[]], 0, len(sexp)
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while i < length:
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c = sexp[i]
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kind = type(stack[-1])
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if kind == list:
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if c == '(':
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stack.append([])
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elif c == ')':
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stack[-2].append(stack.pop())
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elif c == '"':
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stack.append('')
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elif c in whitespace:
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pass
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else:
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stack.append((c,))
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elif kind == str:
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if c == '"':
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stack[-2].append(stack.pop())
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elif c == '\\':
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i += 1
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if sexp[i] != '"':
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stack[-1] += '\\'
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stack[-1] += sexp[i]
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else:
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stack[-1] += c
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elif kind == tuple:
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if c in atom_end:
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atom = stack.pop()
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stack[-1].append(atom)
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continue
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else:
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stack[-1] = ((stack[-1][0] + c),)
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i += 1
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return stack.pop()
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class TestGenerationError(Exception):
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def __init__(self, message):
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self.msg = message
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def parse_typed_value(ast):
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types = {
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'i32.const': 'i32',
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'i64.const': 'i64',
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'f32.const': 'float',
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'f64.const': 'double',
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}
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if len(ast) == 2 and ast[0][0] in types:
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return {"type": types[ast[0][0]], "value": ast[1][0]}
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return {"type": "error"}
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def generate_module_source_for_compilation(entries):
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s = '('
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for entry in entries:
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if type(entry) == tuple and len(entry) == 1 and type(entry[0]) == str:
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s += entry[0] + ' '
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elif type(entry) == str:
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s += json.dumps(entry).replace('\\\\', '\\') + ' '
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elif type(entry) == list:
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s += generate_module_source_for_compilation(entry)
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else:
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raise Exception("wat? I dunno how to pretty print " + str(type(entry)))
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while s.endswith(' '):
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s = s[:len(s) - 1]
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return s + ')'
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def generate_binary_source(chunks):
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res = b''
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for chunk in chunks:
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i = 0
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while i < len(chunk):
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c = chunk[i]
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if c == '\\':
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res += bytes.fromhex(chunk[i + 1: i + 3])
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i += 3
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continue
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res += c.encode('utf-8')
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i += 1
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return res
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named_modules = {}
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named_modules_inverse = {}
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registered_modules = {}
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module_output_path: str
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def generate_module(ast):
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# (module ...)
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name = None
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mode = 'ast' # binary, quote
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start_index = 1
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if len(ast) > 1:
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if isinstance(ast[1], tuple) and isinstance(ast[1][0], str) and ast[1][0].startswith('$'):
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name = ast[1][0]
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if len(ast) > 2:
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if isinstance(ast[2], tuple) and ast[2][0] in ('binary', 'quote'):
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mode = ast[2][0]
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start_index = 3
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else:
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start_index = 2
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elif isinstance(ast[1][0], str):
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mode = ast[1][0]
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start_index = 2
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result = {
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'ast': lambda: ('parse', generate_module_source_for_compilation(ast)),
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'binary': lambda: ('literal', generate_binary_source(ast[start_index:])),
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# FIXME: Make this work when we have a WAT parser
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'quote': lambda: ('literal', ast[start_index]),
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}[mode]()
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return {
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'module': result,
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'name': name
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}
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def generate(ast):
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global named_modules, named_modules_inverse, registered_modules
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if type(ast) != list:
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return []
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tests = []
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for entry in ast:
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if len(entry) > 0 and entry[0] == ('module',):
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gen = generate_module(entry)
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module, name = gen['module'], gen['name']
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tests.append({
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"module": module,
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"tests": []
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})
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if name is not None:
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named_modules[name] = len(tests) - 1
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named_modules_inverse[len(tests) - 1] = (name, None)
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elif entry[0] == ('assert_unlinkable',):
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# (assert_unlinkable module message)
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if len(entry) < 2 or not isinstance(entry[1], list) or entry[1][0] != ('module',):
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print(f"Invalid argument to assert_unlinkable: {entry[1]}", file=stderr)
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continue
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result = generate_module(entry[1])
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tests.append({
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'module': None,
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'tests': [{
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"kind": "unlinkable",
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"module": result['module'],
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}]
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})
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elif entry[0] in (('assert_malformed',), ('assert_invalid',)):
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# (assert_malformed/invalid module message)
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if len(entry) < 2 or not isinstance(entry[1], list) or entry[1][0] != ('module',):
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print(f"Invalid argument to assert_malformed: {entry[1]}", file=stderr)
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continue
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result = generate_module(entry[1])
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kind = entry[0][0][len('assert_'):]
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tests.append({
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'module': None,
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'kind': kind,
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'tests': [{
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"kind": kind,
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"module": result['module'],
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}]
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})
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elif len(entry) in [2, 3] and entry[0][0].startswith('assert_'):
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if entry[1][0] == ('invoke',):
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arg, name, module = 0, None, None
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if isinstance(entry[1][1], str):
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name = entry[1][1]
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else:
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name = entry[1][2]
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module = named_modules[entry[1][1][0]]
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arg = 1
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kind = entry[0][0][len('assert_'):]
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tests[-1]["tests"].append({
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"kind": kind,
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"function": {
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"module": module,
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"name": name,
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"args": list(parse_typed_value(x) for x in entry[1][arg + 2:])
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},
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"result": parse_typed_value(entry[2]) if len(entry) == 3 + arg and kind != 'exhaustion' else None
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})
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elif entry[1][0] == ('get',):
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arg, name, module = 0, None, None
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if isinstance(entry[1][1], str):
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name = entry[1][1]
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else:
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name = entry[1][2]
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module = named_modules[entry[1][1][0]]
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arg = 1
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tests[-1]["tests"].append({
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"kind": entry[0][0][len('assert_'):],
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"get": {
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"name": name,
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"module": module,
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},
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"result": parse_typed_value(entry[2]) if len(entry) == 3 + arg else None
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})
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else:
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if not len(tests):
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tests.append({
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"module": ('literal', b""),
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"tests": []
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})
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tests[-1]["tests"].append({
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"kind": "testgen_fail",
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"function": {
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"module": None,
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"name": "<unknown>",
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"args": []
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},
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"reason": f"Unknown assertion {entry[0][0][len('assert_'):]}"
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})
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elif len(entry) >= 2 and entry[0][0] == 'invoke':
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# toplevel invoke :shrug:
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arg, name, module = 0, None, None
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if not isinstance(entry[1], str) and isinstance(entry[1][1], str):
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name = entry[1][1]
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elif isinstance(entry[1], str):
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name = entry[1]
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else:
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name = entry[1][2]
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module = named_modules[entry[1][1][0]]
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arg = 1
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tests[-1]["tests"].append({
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"kind": "ignore",
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"function": {
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"module": module,
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"name": name,
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"args": list(parse_typed_value(x) for x in entry[1][arg + 2:])
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},
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"result": parse_typed_value(entry[2]) if len(entry) == 3 + arg else None
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})
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elif len(entry) > 1 and entry[0][0] == 'register':
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if len(entry) == 3:
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registered_modules[entry[1]] = named_modules[entry[2][0]]
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x = named_modules_inverse[named_modules[entry[2][0]]]
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named_modules_inverse[named_modules[entry[2][0]]] = (x[0], entry[1])
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else:
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index = len(tests) - 1
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registered_modules[entry[1]] = index
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named_modules_inverse[index] = (":" + entry[1], entry[1])
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else:
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if not len(tests):
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tests.append({
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"module": ('literal', b""),
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"tests": []
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})
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tests[-1]["tests"].append({
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"kind": "testgen_fail",
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"function": {
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"module": None,
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"name": "<unknown>",
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"args": []
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},
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"reason": f"Unknown command {entry[0][0]}"
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})
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return tests
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def genarg(spec):
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if spec['type'] == 'error':
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return '0'
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def gen():
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x = spec['value']
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if spec['type'] in ('i32', 'i64'):
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if x.startswith('0x'):
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if spec['type'] == 'i32':
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# cast back to i32 to get the correct sign
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return str(struct.unpack('>i', struct.pack('>Q', int(x, 16))[4:])[0])
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# cast back to i64 to get the correct sign
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return str(struct.unpack('>q', struct.pack('>Q', int(x, 16)))[0]) + 'n'
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if spec['type'] == 'i64':
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# Make a bigint instead, since `double' cannot fit all i64 values.
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if x.startswith('0'):
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x = x.lstrip('0')
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if x == '':
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x = '0'
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return x + 'n'
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return x
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if x == 'nan':
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return 'NaN'
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if x == '-nan':
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return '-NaN'
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try:
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x = float(x)
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if math.isnan(x):
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# FIXME: This is going to mess up the different kinds of nan
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return '-NaN' if math.copysign(1.0, x) < 0 else 'NaN'
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if math.isinf(x):
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return 'Infinity' if x > 0 else '-Infinity'
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return x
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except ValueError:
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try:
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x = float.fromhex(x)
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if math.isnan(x):
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# FIXME: This is going to mess up the different kinds of nan
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return '-NaN' if math.copysign(1.0, x) < 0 else 'NaN'
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if math.isinf(x):
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return 'Infinity' if x > 0 else '-Infinity'
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return x
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except ValueError:
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try:
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x = int(x, 0)
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return x
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except ValueError:
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return x
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x = gen()
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if isinstance(x, str):
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if x.startswith('nan'):
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return 'NaN'
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if x.startswith('-nan'):
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return '-NaN'
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return x
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return str(x)
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all_names_in_main = {}
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def genresult(ident, entry, index):
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expectation = None
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if "function" in entry:
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tmodule = 'module'
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if entry['function']['module'] is not None:
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tmodule = f'namedModules[{json.dumps(named_modules_inverse[entry["function"]["module"]][0])}]'
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expectation = (
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f'{tmodule}.invoke({ident}, {", ".join(genarg(x) for x in entry["function"]["args"])})'
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)
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elif "get" in entry:
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expectation = f'module.getExport({ident})'
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if entry['kind'] == 'return':
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return (
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f'let {ident}_result = {expectation};\n ' +
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(f'expect({ident}_result).toBe({genarg(entry["result"])})\n ' if entry["result"] is not None else '')
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)
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if entry['kind'] == 'ignore':
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return expectation
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if entry['kind'] == 'unlinkable':
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name = f'mod-{ident}-{index}.wasm'
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outpath = path.join(module_output_path, name)
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if not compile_wasm_source(entry['module'], outpath):
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return 'throw new Error("Module compilation failed");'
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return (
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f' expect(() => {{\n'
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f' let content = readBinaryWasmFile("Fixtures/SpecTests/{name}");\n'
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f' parseWebAssemblyModule(content, globalImportObject);\n'
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f' }}).toThrow(TypeError, "Linking failed");'
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)
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if entry['kind'] in ('exhaustion', 'trap', 'invalid'):
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return (
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f'expect(() => {expectation}.toThrow(TypeError, "Execution trapped"));\n '
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)
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if entry['kind'] == 'malformed':
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return ''
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if entry['kind'] == 'testgen_fail':
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raise TestGenerationError(entry["reason"])
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if not expectation:
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raise TestGenerationError(f"Unknown test result structure in {json.dumps(entry)}")
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return expectation
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raw_test_number = 0
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def gentest(entry, main_name):
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global raw_test_number
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isfunction = 'function' in entry
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name: str
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isempty = False
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if isfunction or 'get' in entry:
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name = json.dumps((entry["function"] if isfunction else entry["get"])["name"])[1:-1]
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else:
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isempty = True
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name = str(f"_inline_test_{raw_test_number}")
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raw_test_number += 1
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if type(name) != str:
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print("Unsupported test case (call to", name, ")", file=stderr)
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return '\n '
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ident = '_' + re.sub("[^a-zA-Z_0-9]", "_", name)
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count = all_names_in_main.get(name, 0)
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all_names_in_main[name] = count + 1
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test_name = f'execution of {main_name}: {name} (instance {count})'
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tmodule = 'module'
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if not isempty:
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key = "function" if "function" in entry else "get"
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if entry[key]['module'] is not None:
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tmodule = f'namedModules[{json.dumps(named_modules_inverse[entry[key]["module"]][0])}]'
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test = "_test"
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try:
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result = genresult(ident, entry, count)
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except TestGenerationError as e:
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test = f"/* {e.msg} */ _test.skip"
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result = ""
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return (
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f'{test}({json.dumps(test_name)}, () => {{\n' +
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(
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f'let {ident} = {tmodule}.getExport({json.dumps(name)});\n '
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f'expect({ident}).not.toBeUndefined();\n '
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if not isempty else ''
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) +
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f'{result}'
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'});\n\n '
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)
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def gen_parse_module(name, index):
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export_string = ''
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if index in named_modules_inverse:
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entry = named_modules_inverse[index]
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export_string += f'namedModules[{json.dumps(entry[0])}] = module;\n '
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if entry[1]:
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export_string += f'globalImportObject[{json.dumps(entry[1])}] = module;\n '
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return (
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'let content, module;\n '
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'try {\n '
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f'content = readBinaryWasmFile("Fixtures/SpecTests/{name}.wasm");\n '
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f'module = parseWebAssemblyModule(content, globalImportObject)\n '
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'} catch(e) { _test("parse", () => expect().fail(e)); _test = test.skip; _test.skip = test.skip; }\n '
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f'{export_string}\n '
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)
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def nth(a, x, y=None):
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if y:
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return a[x:y]
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return a[x]
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def compile_wasm_source(mod, outpath):
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if not mod:
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return True
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if mod[0] == 'literal':
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with open(outpath, 'wb+') as f:
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f.write(mod[1])
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return True
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elif mod[0] == 'parse':
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with NamedTemporaryFile("w+") as temp:
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temp.write(mod[1])
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temp.flush()
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rc = call(["wat2wasm", "--enable-all", "--no-check", temp.name, "-o", outpath])
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return rc == 0
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return False
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def main():
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global module_output_path
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with open(argv[1]) as f:
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sexp = f.read()
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name = argv[2]
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module_output_path = argv[3]
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ast = parse(sexp)
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print('let globalImportObject = {};')
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print('let namedModules = {};\n')
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for index, description in enumerate(generate(ast)):
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testname = f'{name}_{index}'
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outpath = path.join(module_output_path, f'{testname}.wasm')
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mod = description["module"]
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if not compile_wasm_source(mod, outpath) and ('kind' not in description or description["kind"] != "malformed"):
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print("Failed to compile", name, "module index", index, "skipping that test", file=stderr)
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continue
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sep = ""
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print(f'''describe({json.dumps(testname)}, () => {{
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let _test = test;
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{gen_parse_module(testname, index) if mod else ''}
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{sep.join(gentest(x, testname) for x in description["tests"])}
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}});
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''')
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if __name__ == "__main__":
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main()
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