[6a3a178] | 1 | "use strict";
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| 2 |
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| 3 | Object.defineProperty(exports, "__esModule", {
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| 4 | value: true
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| 5 | });
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| 6 | exports.transform = transform;
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| 7 |
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| 8 | var _index = require("../../index");
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| 9 |
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| 10 | var _astModuleToModuleContext = require("../ast-module-to-module-context");
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| 11 |
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| 12 | function _typeof(obj) { 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); }
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| 13 |
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| 14 | function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_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; }
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| 15 |
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| 16 | function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
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| 17 |
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| 18 | // FIXME(sven): do the same with all block instructions, must be more generic here
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| 19 | function newUnexpectedFunction(i) {
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| 20 | return new Error("unknown function at offset: " + i);
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| 21 | }
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| 22 |
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| 23 | function transform(ast) {
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| 24 | var module;
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| 25 | (0, _index.traverse)(ast, {
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| 26 | Module: function (_Module) {
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| 27 | function Module(_x) {
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| 28 | return _Module.apply(this, arguments);
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| 29 | }
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| 30 |
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| 31 | Module.toString = function () {
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| 32 | return _Module.toString();
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| 33 | };
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| 34 |
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| 35 | return Module;
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| 36 | }(function (path) {
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| 37 | module = path.node;
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| 38 | })
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| 39 | });
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| 40 | var moduleContext = (0, _astModuleToModuleContext.moduleContextFromModuleAST)(module); // Transform the actual instruction in function bodies
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| 41 |
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| 42 | (0, _index.traverse)(ast, {
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| 43 | Func: function (_Func) {
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| 44 | function Func(_x2) {
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| 45 | return _Func.apply(this, arguments);
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| 46 | }
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| 47 |
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| 48 | Func.toString = function () {
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| 49 | return _Func.toString();
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| 50 | };
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| 51 |
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| 52 | return Func;
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| 53 | }(function (path) {
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| 54 | transformFuncPath(path, moduleContext);
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| 55 | }),
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| 56 | Start: function (_Start) {
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| 57 | function Start(_x3) {
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| 58 | return _Start.apply(this, arguments);
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| 59 | }
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| 60 |
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| 61 | Start.toString = function () {
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| 62 | return _Start.toString();
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| 63 | };
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| 64 |
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| 65 | return Start;
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| 66 | }(function (path) {
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| 67 | var index = path.node.index;
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| 68 |
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| 69 | if ((0, _index.isIdentifier)(index) === true) {
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| 70 | var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
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| 71 |
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| 72 | if (typeof offsetInModule === "undefined") {
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| 73 | throw newUnexpectedFunction(index.value);
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| 74 | } // Replace the index Identifier
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| 75 | // $FlowIgnore: reference?
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| 76 |
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| 77 |
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| 78 | path.node.index = (0, _index.numberLiteralFromRaw)(offsetInModule);
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| 79 | }
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| 80 | })
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| 81 | });
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| 82 | }
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| 83 |
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| 84 | function transformFuncPath(funcPath, moduleContext) {
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| 85 | var funcNode = funcPath.node;
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| 86 | var signature = funcNode.signature;
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| 87 |
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| 88 | if (signature.type !== "Signature") {
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| 89 | throw new Error("Function signatures must be denormalised before execution");
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| 90 | }
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| 91 |
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| 92 | var params = signature.params; // Add func locals in the context
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| 93 |
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| 94 | params.forEach(function (p) {
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| 95 | return moduleContext.addLocal(p.valtype);
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| 96 | });
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| 97 | (0, _index.traverse)(funcNode, {
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| 98 | Instr: function (_Instr) {
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| 99 | function Instr(_x4) {
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| 100 | return _Instr.apply(this, arguments);
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| 101 | }
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| 102 |
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| 103 | Instr.toString = function () {
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| 104 | return _Instr.toString();
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| 105 | };
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| 106 |
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| 107 | return Instr;
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| 108 | }(function (instrPath) {
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| 109 | var instrNode = instrPath.node;
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| 110 | /**
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| 111 | * Local access
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| 112 | */
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| 113 |
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| 114 | if (instrNode.id === "get_local" || instrNode.id === "set_local" || instrNode.id === "tee_local") {
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| 115 | var _instrNode$args = _slicedToArray(instrNode.args, 1),
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| 116 | firstArg = _instrNode$args[0];
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| 117 |
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| 118 | if (firstArg.type === "Identifier") {
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| 119 | var offsetInParams = params.findIndex(function (_ref) {
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| 120 | var id = _ref.id;
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| 121 | return id === firstArg.value;
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| 122 | });
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| 123 |
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| 124 | if (offsetInParams === -1) {
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| 125 | throw new Error("".concat(firstArg.value, " not found in ").concat(instrNode.id, ": not declared in func params"));
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| 126 | } // Replace the Identifer node by our new NumberLiteral node
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| 127 |
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| 128 |
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| 129 | instrNode.args[0] = (0, _index.numberLiteralFromRaw)(offsetInParams);
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| 130 | }
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| 131 | }
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| 132 | /**
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| 133 | * Global access
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| 134 | */
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| 135 |
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| 136 |
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| 137 | if (instrNode.id === "get_global" || instrNode.id === "set_global") {
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| 138 | var _instrNode$args2 = _slicedToArray(instrNode.args, 1),
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| 139 | _firstArg = _instrNode$args2[0];
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| 140 |
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| 141 | if ((0, _index.isIdentifier)(_firstArg) === true) {
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| 142 | var globalOffset = moduleContext.getGlobalOffsetByIdentifier( // $FlowIgnore: reference?
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| 143 | _firstArg.value);
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| 144 |
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| 145 | if (typeof globalOffset === "undefined") {
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| 146 | // $FlowIgnore: reference?
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| 147 | throw new Error("global ".concat(_firstArg.value, " not found in module"));
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| 148 | } // Replace the Identifer node by our new NumberLiteral node
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| 149 |
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| 150 |
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| 151 | instrNode.args[0] = (0, _index.numberLiteralFromRaw)(globalOffset);
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| 152 | }
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| 153 | }
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| 154 | /**
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| 155 | * Labels lookup
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| 156 | */
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| 157 |
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| 158 |
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| 159 | if (instrNode.id === "br") {
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| 160 | var _instrNode$args3 = _slicedToArray(instrNode.args, 1),
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| 161 | _firstArg2 = _instrNode$args3[0];
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| 162 |
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| 163 | if ((0, _index.isIdentifier)(_firstArg2) === true) {
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| 164 | // if the labels is not found it is going to be replaced with -1
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| 165 | // which is invalid.
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| 166 | var relativeBlockCount = -1; // $FlowIgnore: reference?
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| 167 |
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| 168 | instrPath.findParent(function (_ref2) {
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| 169 | var node = _ref2.node;
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| 170 |
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| 171 | if ((0, _index.isBlock)(node)) {
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| 172 | relativeBlockCount++; // $FlowIgnore: reference?
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| 173 |
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| 174 | var name = node.label || node.name;
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| 175 |
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| 176 | if (_typeof(name) === "object") {
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| 177 | // $FlowIgnore: isIdentifier ensures that
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| 178 | if (name.value === _firstArg2.value) {
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| 179 | // Found it
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| 180 | return false;
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| 181 | }
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| 182 | }
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| 183 | }
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| 184 |
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| 185 | if ((0, _index.isFunc)(node)) {
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| 186 | return false;
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| 187 | }
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| 188 | }); // Replace the Identifer node by our new NumberLiteral node
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| 189 |
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| 190 | instrNode.args[0] = (0, _index.numberLiteralFromRaw)(relativeBlockCount);
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| 191 | }
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| 192 | }
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| 193 | }),
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| 194 |
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| 195 | /**
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| 196 | * Func lookup
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| 197 | */
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| 198 | CallInstruction: function (_CallInstruction) {
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| 199 | function CallInstruction(_x5) {
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| 200 | return _CallInstruction.apply(this, arguments);
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| 201 | }
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| 202 |
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| 203 | CallInstruction.toString = function () {
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| 204 | return _CallInstruction.toString();
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| 205 | };
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| 206 |
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| 207 | return CallInstruction;
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| 208 | }(function (_ref3) {
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| 209 | var node = _ref3.node;
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| 210 | var index = node.index;
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| 211 |
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| 212 | if ((0, _index.isIdentifier)(index) === true) {
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| 213 | var offsetInModule = moduleContext.getFunctionOffsetByIdentifier(index.value);
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| 214 |
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| 215 | if (typeof offsetInModule === "undefined") {
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| 216 | throw newUnexpectedFunction(index.value);
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| 217 | } // Replace the index Identifier
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| 218 | // $FlowIgnore: reference?
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| 219 |
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| 220 |
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| 221 | node.index = (0, _index.numberLiteralFromRaw)(offsetInModule);
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| 222 | }
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| 223 | })
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| 224 | });
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| 225 | } |
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