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How to use create_case method in localstack

Best Python code snippet using localstack_python

generateWasmOpsHeader.py

Source:generateWasmOpsHeader.py

1#! /usr/bin/python2# Copyright (C) 2016-2017 Apple Inc. All rights reserved.3#4# Redistribution and use in source and binary forms, with or without5# modification, are permitted provided that the following conditions6# are met:7#8# 1.  Redistributions of source code must retain the above copyright9#     notice, this list of conditions and the following disclaimer.10# 2.  Redistributions in binary form must reproduce the above copyright11#     notice, this list of conditions and the following disclaimer in the12#     documentation and/or other materials provided with the distribution.13#14# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY15# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED16# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE17# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY18# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES19# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;20# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND21# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT22# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF23# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.24# This tool has a couple of helpful macros to process Wasm files from the wasm.json.25from generateWasm import *26import optparse27import sys28parser = optparse.OptionParser(usage="usage: %prog <wasm.json> <WasmOps.h>")29(options, args) = parser.parse_args(sys.argv[0:])30if len(args) != 3:31    parser.error(parser.usage)32wasm = Wasm(args[0], args[1])33types = wasm.types34opcodes = wasm.opcodes35wasmOpsHFile = open(args[2], "w")36def cppMacro(wasmOpcode, value, b3, inc):37    return " \\\n    macro(" + wasm.toCpp(wasmOpcode) + ", " + hex(int(value)) + ", " + b3 + ", " + str(inc) + ")"38def typeMacroizer():39    inc = 040    for ty in wasm.types:41        yield cppMacro(ty, wasm.types[ty]["value"], wasm.types[ty]["b3type"], inc)42        inc += 143type_definitions = ["#define FOR_EACH_WASM_TYPE(macro)"]44type_definitions.extend([t for t in typeMacroizer()])45type_definitions = "".join(type_definitions)46def opcodeMacroizer(filter):47    inc = 048    for op in wasm.opcodeIterator(filter):49        b3op = "Oops"50        if isSimple(op["opcode"]):51            b3op = op["opcode"]["b3op"]52        yield cppMacro(op["name"], op["opcode"]["value"], b3op, inc)53        inc += 154defines = ["#define FOR_EACH_WASM_SPECIAL_OP(macro)"]55defines.extend([op for op in opcodeMacroizer(lambda op: not (isUnary(op) or isBinary(op) or op["category"] == "control" or op["category"] == "memory"))])56defines.append("\n\n#define FOR_EACH_WASM_CONTROL_FLOW_OP(macro)")57defines.extend([op for op in opcodeMacroizer(lambda op: op["category"] == "control")])58defines.append("\n\n#define FOR_EACH_WASM_SIMPLE_UNARY_OP(macro)")59defines.extend([op for op in opcodeMacroizer(lambda op: isUnary(op) and isSimple(op))])60defines.append("\n\n#define FOR_EACH_WASM_UNARY_OP(macro) \\\n    FOR_EACH_WASM_SIMPLE_UNARY_OP(macro)")61defines.extend([op for op in opcodeMacroizer(lambda op: isUnary(op) and not (isSimple(op)))])62defines.append("\n\n#define FOR_EACH_WASM_SIMPLE_BINARY_OP(macro)")63defines.extend([op for op in opcodeMacroizer(lambda op: isBinary(op) and isSimple(op))])64defines.append("\n\n#define FOR_EACH_WASM_BINARY_OP(macro) \\\n    FOR_EACH_WASM_SIMPLE_BINARY_OP(macro)")65defines.extend([op for op in opcodeMacroizer(lambda op: isBinary(op) and not (isSimple(op)))])66defines.append("\n\n#define FOR_EACH_WASM_MEMORY_LOAD_OP(macro)")67defines.extend([op for op in opcodeMacroizer(lambda op: (op["category"] == "memory" and len(op["return"]) == 1))])68defines.append("\n\n#define FOR_EACH_WASM_MEMORY_STORE_OP(macro)")69defines.extend([op for op in opcodeMacroizer(lambda op: (op["category"] == "memory" and len(op["return"]) == 0))])70defines.append("\n\n")71defines = "".join(defines)72opValueSet = set([op for op in wasm.opcodeIterator(lambda op: True, lambda op: opcodes[op]["value"])])73maxOpValue = max(opValueSet)74# Luckily, python does floor division rather than trunc division so this works.75def ceilDiv(a, b):76    return -(-a // b)77def bitSet():78    v = ""79    for i in range(ceilDiv(maxOpValue, 8)):80        entry = 081        for j in range(8):82            if i * 8 + j in opValueSet:83                entry |= 1 << j84        v += (", " if i else "") + hex(entry)85    return v86validOps = bitSet()87def memoryLog2AlignmentGenerator(filter):88    result = []89    for op in wasm.opcodeIterator(filter):90        result.append("    case " + wasm.toCpp(op["name"]) + ": return " + memoryLog2Alignment(op) + ";")91    return "\n".join(result)92memoryLog2AlignmentLoads = memoryLog2AlignmentGenerator(lambda op: (op["category"] == "memory" and len(op["return"]) == 1))93memoryLog2AlignmentStores = memoryLog2AlignmentGenerator(lambda op: (op["category"] == "memory" and len(op["return"]) == 0))94contents = wasm.header + """95#pragma once96#if ENABLE(WEBASSEMBLY)97#include <cstdint>98namespace JSC { namespace Wasm {99static constexpr unsigned expectedVersionNumber = """ + wasm.expectedVersionNumber + """;100static constexpr unsigned numTypes = """ + str(len(types)) + """;101""" + type_definitions + """102#define CREATE_ENUM_VALUE(name, id, b3type, inc) name = id,103enum Type : int8_t {104    FOR_EACH_WASM_TYPE(CREATE_ENUM_VALUE)105};106#undef CREATE_ENUM_VALUE107#define CREATE_CASE(name, id, b3type, inc) case id: return true;108template <typename Int>109inline bool isValidType(Int i)110{111    switch (i) {112    default: return false;113    FOR_EACH_WASM_TYPE(CREATE_CASE)114    }115    RELEASE_ASSERT_NOT_REACHED();116    return false;117}118#undef CREATE_CASE119#define CREATE_CASE(name, id, b3type, inc) case name: return b3type;120inline B3::Type toB3Type(Type type)121{122    switch (type) {123    FOR_EACH_WASM_TYPE(CREATE_CASE)124    }125    RELEASE_ASSERT_NOT_REACHED();126    return B3::Void;127}128#undef CREATE_CASE129#define CREATE_CASE(name, id, b3type, inc) case name: return #name;130inline const char* makeString(Type type)131{132    switch (type) {133    FOR_EACH_WASM_TYPE(CREATE_CASE)134    }135    RELEASE_ASSERT_NOT_REACHED();136    return nullptr;137}138#undef CREATE_CASE139#define CREATE_CASE(name, id, b3type, inc) case id: return inc;140inline int linearizeType(Type type)141{142    switch (type) {143    FOR_EACH_WASM_TYPE(CREATE_CASE)144    }145    RELEASE_ASSERT_NOT_REACHED();146    return 0;147}148#undef CREATE_CASE149#define CREATE_CASE(name, id, b3type, inc) case inc: return name;150inline Type linearizedToType(int i)151{152    switch (i) {153    FOR_EACH_WASM_TYPE(CREATE_CASE)154    }155    RELEASE_ASSERT_NOT_REACHED();156    return Void;157}158#undef CREATE_CASE159""" + defines + """160#define FOR_EACH_WASM_OP(macro) \\161    FOR_EACH_WASM_SPECIAL_OP(macro) \\162    FOR_EACH_WASM_CONTROL_FLOW_OP(macro) \\163    FOR_EACH_WASM_UNARY_OP(macro) \\164    FOR_EACH_WASM_BINARY_OP(macro) \\165    FOR_EACH_WASM_MEMORY_LOAD_OP(macro) \\166    FOR_EACH_WASM_MEMORY_STORE_OP(macro)167#define CREATE_ENUM_VALUE(name, id, b3op, inc) name = id,168enum OpType : uint8_t {169    FOR_EACH_WASM_OP(CREATE_ENUM_VALUE)170};171template<typename Int>172inline bool isValidOpType(Int i)173{174    // Bitset of valid ops.175    static const uint8_t valid[] = { """ + validOps + """ };176    return 0 <= i && i <= """ + str(maxOpValue) + """ && (valid[i / 8] & (1 << (i % 8)));177}178enum class BinaryOpType : uint8_t {179    FOR_EACH_WASM_BINARY_OP(CREATE_ENUM_VALUE)180};181enum class UnaryOpType : uint8_t {182    FOR_EACH_WASM_UNARY_OP(CREATE_ENUM_VALUE)183};184enum class LoadOpType : uint8_t {185    FOR_EACH_WASM_MEMORY_LOAD_OP(CREATE_ENUM_VALUE)186};187enum class StoreOpType : uint8_t {188    FOR_EACH_WASM_MEMORY_STORE_OP(CREATE_ENUM_VALUE)189};190#undef CREATE_ENUM_VALUE191inline bool isControlOp(OpType op)192{193    switch (op) {194#define CREATE_CASE(name, id, b3op, inc) case OpType::name:195    FOR_EACH_WASM_CONTROL_FLOW_OP(CREATE_CASE)196        return true;197#undef CREATE_CASE198    default:199        break;200    }201    return false;202}203inline bool isSimple(UnaryOpType op)204{205    switch (op) {206#define CREATE_CASE(name, id, b3op, inc) case UnaryOpType::name:207    FOR_EACH_WASM_SIMPLE_UNARY_OP(CREATE_CASE)208        return true;209#undef CREATE_CASE210    default:211        break;212    }213    return false;214}215inline bool isSimple(BinaryOpType op)216{217    switch (op) {218#define CREATE_CASE(name, id, b3op, inc) case BinaryOpType::name:219    FOR_EACH_WASM_SIMPLE_BINARY_OP(CREATE_CASE)220        return true;221#undef CREATE_CASE222    default:223        break;224    }225    return false;226}227inline uint32_t memoryLog2Alignment(OpType op)228{229    switch (op) {230""" + memoryLog2AlignmentLoads + """231""" + memoryLog2AlignmentStores + """232    default:233        break;234    }235    RELEASE_ASSERT_NOT_REACHED();236    return 0;237}238#define CREATE_CASE(name, id, b3type, inc) case name: return #name;239inline const char* makeString(OpType op)240{241    switch (op) {242    FOR_EACH_WASM_OP(CREATE_CASE)243    }244    RELEASE_ASSERT_NOT_REACHED();245    return nullptr;246}247#undef CREATE_CASE248} } // namespace JSC::Wasm249#endif // ENABLE(WEBASSEMBLY)250"""251wasmOpsHFile.write(contents)...

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