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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/@webassemblyjs/helper-module-context/lib/index.js | |
download | website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.gz website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.bz2 website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.zip |
api, login, auth
Diffstat (limited to 'node_modules/@webassemblyjs/helper-module-context/lib/index.js')
-rw-r--r-- | node_modules/@webassemblyjs/helper-module-context/lib/index.js | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/helper-module-context/lib/index.js b/node_modules/@webassemblyjs/helper-module-context/lib/index.js new file mode 100644 index 0000000..189e719 --- /dev/null +++ b/node_modules/@webassemblyjs/helper-module-context/lib/index.js @@ -0,0 +1,389 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.moduleContextFromModuleAST = moduleContextFromModuleAST; +exports.ModuleContext = void 0; + +var _ast = require("@webassemblyjs/ast"); + +function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } + +function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } + +function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; } + +function moduleContextFromModuleAST(m) { + var moduleContext = new ModuleContext(); + + if (!(m.type === "Module")) { + throw new Error('m.type === "Module"' + " error: " + (undefined || "unknown")); + } + + m.fields.forEach(function (field) { + switch (field.type) { + case "Start": + { + moduleContext.setStart(field.index); + break; + } + + case "TypeInstruction": + { + moduleContext.addType(field); + break; + } + + case "Func": + { + moduleContext.addFunction(field); + break; + } + + case "Global": + { + moduleContext.defineGlobal(field); + break; + } + + case "ModuleImport": + { + switch (field.descr.type) { + case "GlobalType": + { + moduleContext.importGlobal(field.descr.valtype, field.descr.mutability); + break; + } + + case "Memory": + { + moduleContext.addMemory(field.descr.limits.min, field.descr.limits.max); + break; + } + + case "FuncImportDescr": + { + moduleContext.importFunction(field.descr); + break; + } + + case "Table": + { + // FIXME(sven): not implemented yet + break; + } + + default: + throw new Error("Unsupported ModuleImport of type " + JSON.stringify(field.descr.type)); + } + + break; + } + + case "Memory": + { + moduleContext.addMemory(field.limits.min, field.limits.max); + break; + } + } + }); + return moduleContext; +} +/** + * Module context for type checking + */ + + +var ModuleContext = +/*#__PURE__*/ +function () { + function ModuleContext() { + _classCallCheck(this, ModuleContext); + + this.funcs = []; + this.funcsOffsetByIdentifier = []; + this.types = []; + this.globals = []; + this.globalsOffsetByIdentifier = []; + this.mems = []; // Current stack frame + + this.locals = []; + this.labels = []; + this.return = []; + this.debugName = "unknown"; + this.start = null; + } + /** + * Set start segment + */ + + + _createClass(ModuleContext, [{ + key: "setStart", + value: function setStart(index) { + this.start = index.value; + } + /** + * Get start function + */ + + }, { + key: "getStart", + value: function getStart() { + return this.start; + } + /** + * Reset the active stack frame + */ + + }, { + key: "newContext", + value: function newContext(debugName, expectedResult) { + this.locals = []; + this.labels = [expectedResult]; + this.return = expectedResult; + this.debugName = debugName; + } + /** + * Functions + */ + + }, { + key: "addFunction", + value: function addFunction(func + /*: Func*/ + ) { + // eslint-disable-next-line prefer-const + var _ref = func.signature || {}, + _ref$params = _ref.params, + args = _ref$params === void 0 ? [] : _ref$params, + _ref$results = _ref.results, + result = _ref$results === void 0 ? [] : _ref$results; + + args = args.map(function (arg) { + return arg.valtype; + }); + this.funcs.push({ + args: args, + result: result + }); + + if (typeof func.name !== "undefined") { + this.funcsOffsetByIdentifier[func.name.value] = this.funcs.length - 1; + } + } + }, { + key: "importFunction", + value: function importFunction(funcimport) { + if ((0, _ast.isSignature)(funcimport.signature)) { + // eslint-disable-next-line prefer-const + var _funcimport$signature = funcimport.signature, + args = _funcimport$signature.params, + result = _funcimport$signature.results; + args = args.map(function (arg) { + return arg.valtype; + }); + this.funcs.push({ + args: args, + result: result + }); + } else { + if (!(0, _ast.isNumberLiteral)(funcimport.signature)) { + throw new Error('isNumberLiteral(funcimport.signature)' + " error: " + (undefined || "unknown")); + } + + var typeId = funcimport.signature.value; + + if (!this.hasType(typeId)) { + throw new Error('this.hasType(typeId)' + " error: " + (undefined || "unknown")); + } + + var signature = this.getType(typeId); + this.funcs.push({ + args: signature.params.map(function (arg) { + return arg.valtype; + }), + result: signature.results + }); + } + + if (typeof funcimport.id !== "undefined") { + // imports are first, we can assume their index in the array + this.funcsOffsetByIdentifier[funcimport.id.value] = this.funcs.length - 1; + } + } + }, { + key: "hasFunction", + value: function hasFunction(index) { + return typeof this.getFunction(index) !== "undefined"; + } + }, { + key: "getFunction", + value: function getFunction(index) { + if (typeof index !== "number") { + throw new Error("getFunction only supported for number index"); + } + + return this.funcs[index]; + } + }, { + key: "getFunctionOffsetByIdentifier", + value: function getFunctionOffsetByIdentifier(name) { + if (!(typeof name === "string")) { + throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown")); + } + + return this.funcsOffsetByIdentifier[name]; + } + /** + * Labels + */ + + }, { + key: "addLabel", + value: function addLabel(result) { + this.labels.unshift(result); + } + }, { + key: "hasLabel", + value: function hasLabel(index) { + return this.labels.length > index && index >= 0; + } + }, { + key: "getLabel", + value: function getLabel(index) { + return this.labels[index]; + } + }, { + key: "popLabel", + value: function popLabel() { + this.labels.shift(); + } + /** + * Locals + */ + + }, { + key: "hasLocal", + value: function hasLocal(index) { + return typeof this.getLocal(index) !== "undefined"; + } + }, { + key: "getLocal", + value: function getLocal(index) { + return this.locals[index]; + } + }, { + key: "addLocal", + value: function addLocal(type) { + this.locals.push(type); + } + /** + * Types + */ + + }, { + key: "addType", + value: function addType(type) { + if (!(type.functype.type === "Signature")) { + throw new Error('type.functype.type === "Signature"' + " error: " + (undefined || "unknown")); + } + + this.types.push(type.functype); + } + }, { + key: "hasType", + value: function hasType(index) { + return this.types[index] !== undefined; + } + }, { + key: "getType", + value: function getType(index) { + return this.types[index]; + } + /** + * Globals + */ + + }, { + key: "hasGlobal", + value: function hasGlobal(index) { + return this.globals.length > index && index >= 0; + } + }, { + key: "getGlobal", + value: function getGlobal(index) { + return this.globals[index].type; + } + }, { + key: "getGlobalOffsetByIdentifier", + value: function getGlobalOffsetByIdentifier(name) { + if (!(typeof name === "string")) { + throw new Error('typeof name === "string"' + " error: " + (undefined || "unknown")); + } + + return this.globalsOffsetByIdentifier[name]; + } + }, { + key: "defineGlobal", + value: function defineGlobal(global + /*: Global*/ + ) { + var type = global.globalType.valtype; + var mutability = global.globalType.mutability; + this.globals.push({ + type: type, + mutability: mutability + }); + + if (typeof global.name !== "undefined") { + this.globalsOffsetByIdentifier[global.name.value] = this.globals.length - 1; + } + } + }, { + key: "importGlobal", + value: function importGlobal(type, mutability) { + this.globals.push({ + type: type, + mutability: mutability + }); + } + }, { + key: "isMutableGlobal", + value: function isMutableGlobal(index) { + return this.globals[index].mutability === "var"; + } + }, { + key: "isImmutableGlobal", + value: function isImmutableGlobal(index) { + return this.globals[index].mutability === "const"; + } + /** + * Memories + */ + + }, { + key: "hasMemory", + value: function hasMemory(index) { + return this.mems.length > index && index >= 0; + } + }, { + key: "addMemory", + value: function addMemory(min, max) { + this.mems.push({ + min: min, + max: max + }); + } + }, { + key: "getMemory", + value: function getMemory(index) { + return this.mems[index]; + } + }]); + + return ModuleContext; +}(); + +exports.ModuleContext = ModuleContext;
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