Spaces:
Running
Running
File size: 8,263 Bytes
7c5b7bd |
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 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 |
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.transform = transform;
var _index = require("../../index");
var _astModuleToModuleContext = require("../ast-module-to-module-context");
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
// FIXME(sven): do the same with all block instructions, must be more generic here
function newUnexpectedFunction(i) {
return new Error("unknown function at offset: " + i);
}
function transform(ast) {
var module = null;
(0, _index.traverse)(ast, {
Module: function (_Module) {
function Module(_x) {
return _Module.apply(this, arguments);
}
Module.toString = function () {
return _Module.toString();
};
return Module;
}(function (path) {
module = path.node;
})
});
if (module == null) {
throw new Error("Module not foudn in program");
}
var moduleContext = (0, _astModuleToModuleContext.moduleContextFromModuleAST)(module); // Transform the actual instruction in function bodies
(0, _index.traverse)(ast, {
Func: function (_Func) {
function Func(_x2) {
return _Func.apply(this, arguments);
}
Func.toString = function () {
return _Func.toString();
};
return Func;
}(function (path) {
transformFuncPath(path, moduleContext);
}),
Start: function (_Start) {
function Start(_x3) {
return _Start.apply(this, arguments);
}
Start.toString = function () {
return _Start.toString();
};
return Start;
}(function (path) {
var index = path.node.index;
if ((0, _index.isIdentifier)(index) === true) {
var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
if (typeof offsetInModule === "undefined") {
throw newUnexpectedFunction(index.value);
} // Replace the index Identifier
// $FlowIgnore: reference?
path.node.index = (0, _index.numberLiteralFromRaw)(offsetInModule);
}
})
});
}
function transformFuncPath(funcPath, moduleContext) {
var funcNode = funcPath.node;
var signature = funcNode.signature;
if (signature.type !== "Signature") {
throw new Error("Function signatures must be denormalised before execution");
}
var params = signature.params; // Add func locals in the context
params.forEach(function (p) {
return moduleContext.addLocal(p.valtype);
});
(0, _index.traverse)(funcNode, {
Instr: function (_Instr) {
function Instr(_x4) {
return _Instr.apply(this, arguments);
}
Instr.toString = function () {
return _Instr.toString();
};
return Instr;
}(function (instrPath) {
var instrNode = instrPath.node;
/**
* Local access
*/
if (instrNode.id === "get_local" || instrNode.id === "set_local" || instrNode.id === "tee_local") {
var _instrNode$args = _slicedToArray(instrNode.args, 1),
firstArg = _instrNode$args[0];
if (firstArg.type === "Identifier") {
var offsetInParams = params.findIndex(function (_ref) {
var id = _ref.id;
return id === firstArg.value;
});
if (offsetInParams === -1) {
throw new Error("".concat(firstArg.value, " not found in ").concat(instrNode.id, ": not declared in func params"));
} // Replace the Identifer node by our new NumberLiteral node
instrNode.args[0] = (0, _index.numberLiteralFromRaw)(offsetInParams);
}
}
/**
* Global access
*/
if (instrNode.id === "get_global" || instrNode.id === "set_global") {
var _instrNode$args2 = _slicedToArray(instrNode.args, 1),
_firstArg = _instrNode$args2[0];
if ((0, _index.isIdentifier)(_firstArg) === true) {
var globalOffset = moduleContext.getGlobalOffsetByIdentifier( // $FlowIgnore: reference?
_firstArg.value);
if (typeof globalOffset === "undefined") {
// $FlowIgnore: reference?
throw new Error("global ".concat(_firstArg.value, " not found in module"));
} // Replace the Identifer node by our new NumberLiteral node
instrNode.args[0] = (0, _index.numberLiteralFromRaw)(globalOffset);
}
}
/**
* Labels lookup
*/
if (instrNode.id === "br") {
var _instrNode$args3 = _slicedToArray(instrNode.args, 1),
_firstArg2 = _instrNode$args3[0];
if ((0, _index.isIdentifier)(_firstArg2) === true) {
// if the labels is not found it is going to be replaced with -1
// which is invalid.
var relativeBlockCount = -1; // $FlowIgnore: reference?
instrPath.findParent(function (_ref2) {
var node = _ref2.node;
if ((0, _index.isBlock)(node)) {
relativeBlockCount++; // $FlowIgnore: reference?
var name = node.label || node.name;
if (_typeof(name) === "object") {
// $FlowIgnore: isIdentifier ensures that
if (name.value === _firstArg2.value) {
// Found it
return false;
}
}
}
if ((0, _index.isFunc)(node)) {
return false;
}
}); // Replace the Identifer node by our new NumberLiteral node
instrNode.args[0] = (0, _index.numberLiteralFromRaw)(relativeBlockCount);
}
}
}),
/**
* Func lookup
*/
CallInstruction: function (_CallInstruction) {
function CallInstruction(_x5) {
return _CallInstruction.apply(this, arguments);
}
CallInstruction.toString = function () {
return _CallInstruction.toString();
};
return CallInstruction;
}(function (_ref3) {
var node = _ref3.node;
var index = node.index;
if ((0, _index.isIdentifier)(index) === true) {
var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
if (typeof offsetInModule === "undefined") {
throw newUnexpectedFunction(index.value);
} // Replace the index Identifier
// $FlowIgnore: reference?
node.index = (0, _index.numberLiteralFromRaw)(offsetInModule);
}
})
});
} |