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; | |
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); | |
} | |
}) | |
}); | |
} |