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Mini Shell
Mini Shell
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.collectVariableUsage = exports.getDeclarationDomain = exports.getUsageDomain = exports.UsageDomain = exports.DeclarationDomain = void 0;
const util_1 = require("./util");
const ts = require("typescript");
var DeclarationDomain;
(function (DeclarationDomain) {
DeclarationDomain[DeclarationDomain["Namespace"] = 1] = "Namespace";
DeclarationDomain[DeclarationDomain["Type"] = 2] = "Type";
DeclarationDomain[DeclarationDomain["Value"] = 4] = "Value";
DeclarationDomain[DeclarationDomain["Import"] = 8] = "Import";
DeclarationDomain[DeclarationDomain["Any"] = 7] = "Any";
})(DeclarationDomain = exports.DeclarationDomain || (exports.DeclarationDomain = {}));
var UsageDomain;
(function (UsageDomain) {
UsageDomain[UsageDomain["Namespace"] = 1] = "Namespace";
UsageDomain[UsageDomain["Type"] = 2] = "Type";
UsageDomain[UsageDomain["Value"] = 4] = "Value";
UsageDomain[UsageDomain["ValueOrNamespace"] = 5] = "ValueOrNamespace";
UsageDomain[UsageDomain["Any"] = 7] = "Any";
UsageDomain[UsageDomain["TypeQuery"] = 8] = "TypeQuery";
})(UsageDomain = exports.UsageDomain || (exports.UsageDomain = {}));
// TODO handle cases where values are used only for their types, e.g. `declare [propSymbol]: number`
function getUsageDomain(node) {
const parent = node.parent;
switch (parent.kind) {
case ts.SyntaxKind.TypeReference:
return node.originalKeywordKind !== ts.SyntaxKind.ConstKeyword ? 2 /* Type */ : undefined;
case ts.SyntaxKind.ExpressionWithTypeArguments:
return parent.parent.token === ts.SyntaxKind.ImplementsKeyword ||
parent.parent.parent.kind === ts.SyntaxKind.InterfaceDeclaration
? 2 /* Type */
: 4 /* Value */;
case ts.SyntaxKind.TypeQuery:
return 5 /* ValueOrNamespace */ | 8 /* TypeQuery */;
case ts.SyntaxKind.QualifiedName:
if (parent.left === node) {
if (getEntityNameParent(parent).kind === ts.SyntaxKind.TypeQuery)
return 1 /* Namespace */ | 8 /* TypeQuery */;
return 1 /* Namespace */;
}
break;
case ts.SyntaxKind.ExportSpecifier:
// either {name} or {propertyName as name}
if (parent.propertyName === undefined ||
parent.propertyName === node)
return 7 /* Any */; // TODO handle type-only exports
break;
case ts.SyntaxKind.ExportAssignment:
return 7 /* Any */;
// Value
case ts.SyntaxKind.BindingElement:
if (parent.initializer === node)
return 5 /* ValueOrNamespace */;
break;
case ts.SyntaxKind.Parameter:
case ts.SyntaxKind.EnumMember:
case ts.SyntaxKind.PropertyDeclaration:
case ts.SyntaxKind.VariableDeclaration:
case ts.SyntaxKind.PropertyAssignment:
case ts.SyntaxKind.PropertyAccessExpression:
case ts.SyntaxKind.ImportEqualsDeclaration:
if (parent.name !== node)
return 5 /* ValueOrNamespace */; // TODO handle type-only imports
break;
case ts.SyntaxKind.JsxAttribute:
case ts.SyntaxKind.FunctionDeclaration:
case ts.SyntaxKind.FunctionExpression:
case ts.SyntaxKind.NamespaceImport:
case ts.SyntaxKind.ClassDeclaration:
case ts.SyntaxKind.ClassExpression:
case ts.SyntaxKind.ModuleDeclaration:
case ts.SyntaxKind.MethodDeclaration:
case ts.SyntaxKind.EnumDeclaration:
case ts.SyntaxKind.GetAccessor:
case ts.SyntaxKind.SetAccessor:
case ts.SyntaxKind.LabeledStatement:
case ts.SyntaxKind.BreakStatement:
case ts.SyntaxKind.ContinueStatement:
case ts.SyntaxKind.ImportClause:
case ts.SyntaxKind.ImportSpecifier:
case ts.SyntaxKind.TypePredicate: // TODO this actually references a parameter
case ts.SyntaxKind.MethodSignature:
case ts.SyntaxKind.PropertySignature:
case ts.SyntaxKind.NamespaceExportDeclaration:
case ts.SyntaxKind.NamespaceExport:
case ts.SyntaxKind.InterfaceDeclaration:
case ts.SyntaxKind.TypeAliasDeclaration:
case ts.SyntaxKind.TypeParameter:
case ts.SyntaxKind.NamedTupleMember:
break;
default:
return 5 /* ValueOrNamespace */;
}
}
exports.getUsageDomain = getUsageDomain;
function getDeclarationDomain(node) {
switch (node.parent.kind) {
case ts.SyntaxKind.TypeParameter:
case ts.SyntaxKind.InterfaceDeclaration:
case ts.SyntaxKind.TypeAliasDeclaration:
return 2 /* Type */;
case ts.SyntaxKind.ClassDeclaration:
case ts.SyntaxKind.ClassExpression:
return 2 /* Type */ | 4 /* Value */;
case ts.SyntaxKind.EnumDeclaration:
return 7 /* Any */;
case ts.SyntaxKind.NamespaceImport:
case ts.SyntaxKind.ImportClause:
return 7 /* Any */ | 8 /* Import */; // TODO handle type-only imports
case ts.SyntaxKind.ImportEqualsDeclaration:
case ts.SyntaxKind.ImportSpecifier:
return node.parent.name === node
? 7 /* Any */ | 8 /* Import */ // TODO handle type-only imports
: undefined;
case ts.SyntaxKind.ModuleDeclaration:
return 1 /* Namespace */;
case ts.SyntaxKind.Parameter:
if (node.parent.parent.kind === ts.SyntaxKind.IndexSignature || node.originalKeywordKind === ts.SyntaxKind.ThisKeyword)
return;
// falls through
case ts.SyntaxKind.BindingElement:
case ts.SyntaxKind.VariableDeclaration:
return node.parent.name === node ? 4 /* Value */ : undefined;
case ts.SyntaxKind.FunctionDeclaration:
case ts.SyntaxKind.FunctionExpression:
return 4 /* Value */;
}
}
exports.getDeclarationDomain = getDeclarationDomain;
function collectVariableUsage(sourceFile) {
return new UsageWalker().getUsage(sourceFile);
}
exports.collectVariableUsage = collectVariableUsage;
class AbstractScope {
constructor(_global) {
this._global = _global;
this._variables = new Map();
this._uses = [];
this._namespaceScopes = undefined;
this._enumScopes = undefined;
}
addVariable(identifier, name, selector, exported, domain) {
const variables = this.getDestinationScope(selector).getVariables();
const declaration = {
domain,
exported,
declaration: name,
};
const variable = variables.get(identifier);
if (variable === undefined) {
variables.set(identifier, {
domain,
declarations: [declaration],
uses: [],
});
}
else {
variable.domain |= domain;
variable.declarations.push(declaration);
}
}
addUse(use) {
this._uses.push(use);
}
getVariables() {
return this._variables;
}
getFunctionScope() {
return this;
}
end(cb) {
if (this._namespaceScopes !== undefined)
this._namespaceScopes.forEach((value) => value.finish(cb));
this._namespaceScopes = this._enumScopes = undefined;
this._applyUses();
this._variables.forEach((variable) => {
for (const declaration of variable.declarations) {
const result = {
declarations: [],
domain: declaration.domain,
exported: declaration.exported,
inGlobalScope: this._global,
uses: [],
};
for (const other of variable.declarations)
if (other.domain & declaration.domain)
result.declarations.push(other.declaration);
for (const use of variable.uses)
if (use.domain & declaration.domain)
result.uses.push(use);
cb(result, declaration.declaration, this);
}
});
}
// tslint:disable-next-line:prefer-function-over-method
markExported(_name) { } // only relevant for the root scope
createOrReuseNamespaceScope(name, _exported, ambient, hasExportStatement) {
let scope;
if (this._namespaceScopes === undefined) {
this._namespaceScopes = new Map();
}
else {
scope = this._namespaceScopes.get(name);
}
if (scope === undefined) {
scope = new NamespaceScope(ambient, hasExportStatement, this);
this._namespaceScopes.set(name, scope);
}
else {
scope.refresh(ambient, hasExportStatement);
}
return scope;
}
createOrReuseEnumScope(name, _exported) {
let scope;
if (this._enumScopes === undefined) {
this._enumScopes = new Map();
}
else {
scope = this._enumScopes.get(name);
}
if (scope === undefined) {
scope = new EnumScope(this);
this._enumScopes.set(name, scope);
}
return scope;
}
_applyUses() {
for (const use of this._uses)
if (!this._applyUse(use))
this._addUseToParent(use);
this._uses = [];
}
_applyUse(use, variables = this._variables) {
const variable = variables.get(use.location.text);
if (variable === undefined || (variable.domain & use.domain) === 0)
return false;
variable.uses.push(use);
return true;
}
_addUseToParent(_use) { } // tslint:disable-line:prefer-function-over-method
}
class RootScope extends AbstractScope {
constructor(_exportAll, global) {
super(global);
this._exportAll = _exportAll;
this._exports = undefined;
this._innerScope = new NonRootScope(this, 1 /* Function */);
}
addVariable(identifier, name, selector, exported, domain) {
if (domain & 8 /* Import */)
return super.addVariable(identifier, name, selector, exported, domain);
return this._innerScope.addVariable(identifier, name, selector, exported, domain);
}
addUse(use, origin) {
if (origin === this._innerScope)
return super.addUse(use);
return this._innerScope.addUse(use);
}
markExported(id) {
if (this._exports === undefined) {
this._exports = [id.text];
}
else {
this._exports.push(id.text);
}
}
end(cb) {
this._innerScope.end((value, key) => {
value.exported = value.exported || this._exportAll
|| this._exports !== undefined && this._exports.includes(key.text);
value.inGlobalScope = this._global;
return cb(value, key, this);
});
return super.end((value, key, scope) => {
value.exported = value.exported || scope === this
&& this._exports !== undefined && this._exports.includes(key.text);
return cb(value, key, scope);
});
}
getDestinationScope() {
return this;
}
}
class NonRootScope extends AbstractScope {
constructor(_parent, _boundary) {
super(false);
this._parent = _parent;
this._boundary = _boundary;
}
_addUseToParent(use) {
return this._parent.addUse(use, this);
}
getDestinationScope(selector) {
return this._boundary & selector
? this
: this._parent.getDestinationScope(selector);
}
}
class EnumScope extends NonRootScope {
constructor(parent) {
super(parent, 1 /* Function */);
}
end() {
this._applyUses();
}
}
class ConditionalTypeScope extends NonRootScope {
constructor(parent) {
super(parent, 8 /* ConditionalType */);
this._state = 0 /* Initial */;
}
updateState(newState) {
this._state = newState;
}
addUse(use) {
if (this._state === 2 /* TrueType */)
return void this._uses.push(use);
return this._parent.addUse(use, this);
}
}
class FunctionScope extends NonRootScope {
constructor(parent) {
super(parent, 1 /* Function */);
}
beginBody() {
this._applyUses();
}
}
class AbstractNamedExpressionScope extends NonRootScope {
constructor(_name, _domain, parent) {
super(parent, 1 /* Function */);
this._name = _name;
this._domain = _domain;
}
end(cb) {
this._innerScope.end(cb);
return cb({
declarations: [this._name],
domain: this._domain,
exported: false,
uses: this._uses,
inGlobalScope: false,
}, this._name, this);
}
addUse(use, source) {
if (source !== this._innerScope)
return this._innerScope.addUse(use);
if (use.domain & this._domain && use.location.text === this._name.text) {
this._uses.push(use);
}
else {
return this._parent.addUse(use, this);
}
}
getFunctionScope() {
return this._innerScope;
}
getDestinationScope() {
return this._innerScope;
}
}
class FunctionExpressionScope extends AbstractNamedExpressionScope {
constructor(name, parent) {
super(name, 4 /* Value */, parent);
this._innerScope = new FunctionScope(this);
}
beginBody() {
return this._innerScope.beginBody();
}
}
class ClassExpressionScope extends AbstractNamedExpressionScope {
constructor(name, parent) {
super(name, 4 /* Value */ | 2 /* Type */, parent);
this._innerScope = new NonRootScope(this, 1 /* Function */);
}
}
class BlockScope extends NonRootScope {
constructor(_functionScope, parent) {
super(parent, 2 /* Block */);
this._functionScope = _functionScope;
}
getFunctionScope() {
return this._functionScope;
}
}
function mapDeclaration(declaration) {
return {
declaration,
exported: true,
domain: getDeclarationDomain(declaration),
};
}
class NamespaceScope extends NonRootScope {
constructor(_ambient, _hasExport, parent) {
super(parent, 1 /* Function */);
this._ambient = _ambient;
this._hasExport = _hasExport;
this._innerScope = new NonRootScope(this, 1 /* Function */);
this._exports = undefined;
}
finish(cb) {
return super.end(cb);
}
end(cb) {
this._innerScope.end((variable, key, scope) => {
if (scope !== this._innerScope ||
!variable.exported && (!this._ambient || this._exports !== undefined && !this._exports.has(key.text)))
return cb(variable, key, scope);
const namespaceVar = this._variables.get(key.text);
if (namespaceVar === undefined) {
this._variables.set(key.text, {
declarations: variable.declarations.map(mapDeclaration),
domain: variable.domain,
uses: [...variable.uses],
});
}
else {
outer: for (const declaration of variable.declarations) {
for (const existing of namespaceVar.declarations)
if (existing.declaration === declaration)
continue outer;
namespaceVar.declarations.push(mapDeclaration(declaration));
}
namespaceVar.domain |= variable.domain;
for (const use of variable.uses) {
if (namespaceVar.uses.includes(use))
continue;
namespaceVar.uses.push(use);
}
}
});
this._applyUses();
this._innerScope = new NonRootScope(this, 1 /* Function */);
}
createOrReuseNamespaceScope(name, exported, ambient, hasExportStatement) {
if (!exported && (!this._ambient || this._hasExport))
return this._innerScope.createOrReuseNamespaceScope(name, exported, ambient || this._ambient, hasExportStatement);
return super.createOrReuseNamespaceScope(name, exported, ambient || this._ambient, hasExportStatement);
}
createOrReuseEnumScope(name, exported) {
if (!exported && (!this._ambient || this._hasExport))
return this._innerScope.createOrReuseEnumScope(name, exported);
return super.createOrReuseEnumScope(name, exported);
}
addUse(use, source) {
if (source !== this._innerScope)
return this._innerScope.addUse(use);
this._uses.push(use);
}
refresh(ambient, hasExport) {
this._ambient = ambient;
this._hasExport = hasExport;
}
markExported(name, _as) {
if (this._exports === undefined)
this._exports = new Set();
this._exports.add(name.text);
}
getDestinationScope() {
return this._innerScope;
}
}
function getEntityNameParent(name) {
let parent = name.parent;
while (parent.kind === ts.SyntaxKind.QualifiedName)
parent = parent.parent;
return parent;
}
// TODO class decorators resolve outside of class, element and parameter decorator resolve inside/at the class
// TODO computed property name resolves inside/at the cass
// TODO this and super in all of them are resolved outside of the class
class UsageWalker {
constructor() {
this._result = new Map();
}
getUsage(sourceFile) {
const variableCallback = (variable, key) => {
this._result.set(key, variable);
};
const isModule = ts.isExternalModule(sourceFile);
this._scope = new RootScope(sourceFile.isDeclarationFile && isModule && !containsExportStatement(sourceFile), !isModule);
const cb = (node) => {
if (util_1.isBlockScopeBoundary(node))
return continueWithScope(node, new BlockScope(this._scope.getFunctionScope(), this._scope), handleBlockScope);
switch (node.kind) {
case ts.SyntaxKind.ClassExpression:
return continueWithScope(node, node.name !== undefined
? new ClassExpressionScope(node.name, this._scope)
: new NonRootScope(this._scope, 1 /* Function */));
case ts.SyntaxKind.ClassDeclaration:
this._handleDeclaration(node, true, 4 /* Value */ | 2 /* Type */);
return continueWithScope(node, new NonRootScope(this._scope, 1 /* Function */));
case ts.SyntaxKind.InterfaceDeclaration:
case ts.SyntaxKind.TypeAliasDeclaration:
this._handleDeclaration(node, true, 2 /* Type */);
return continueWithScope(node, new NonRootScope(this._scope, 4 /* Type */));
case ts.SyntaxKind.EnumDeclaration:
this._handleDeclaration(node, true, 7 /* Any */);
return continueWithScope(node, this._scope.createOrReuseEnumScope(node.name.text, util_1.hasModifier(node.modifiers, ts.SyntaxKind.ExportKeyword)));
case ts.SyntaxKind.ModuleDeclaration:
return this._handleModule(node, continueWithScope);
case ts.SyntaxKind.MappedType:
return continueWithScope(node, new NonRootScope(this._scope, 4 /* Type */));
case ts.SyntaxKind.FunctionExpression:
case ts.SyntaxKind.ArrowFunction:
case ts.SyntaxKind.Constructor:
case ts.SyntaxKind.MethodDeclaration:
case ts.SyntaxKind.FunctionDeclaration:
case ts.SyntaxKind.GetAccessor:
case ts.SyntaxKind.SetAccessor:
case ts.SyntaxKind.MethodSignature:
case ts.SyntaxKind.CallSignature:
case ts.SyntaxKind.ConstructSignature:
case ts.SyntaxKind.ConstructorType:
case ts.SyntaxKind.FunctionType:
return this._handleFunctionLikeDeclaration(node, cb, variableCallback);
case ts.SyntaxKind.ConditionalType:
return this._handleConditionalType(node, cb, variableCallback);
// End of Scope specific handling
case ts.SyntaxKind.VariableDeclarationList:
this._handleVariableDeclaration(node);
break;
case ts.SyntaxKind.Parameter:
if (node.parent.kind !== ts.SyntaxKind.IndexSignature &&
(node.name.kind !== ts.SyntaxKind.Identifier ||
node.name.originalKeywordKind !== ts.SyntaxKind.ThisKeyword))
this._handleBindingName(node.name, false, false);
break;
case ts.SyntaxKind.EnumMember:
this._scope.addVariable(util_1.getPropertyName(node.name), node.name, 1 /* Function */, true, 4 /* Value */);
break;
case ts.SyntaxKind.ImportClause:
case ts.SyntaxKind.ImportSpecifier:
case ts.SyntaxKind.NamespaceImport:
case ts.SyntaxKind.ImportEqualsDeclaration:
this._handleDeclaration(node, false, 7 /* Any */ | 8 /* Import */);
break;
case ts.SyntaxKind.TypeParameter:
this._scope.addVariable(node.name.text, node.name, node.parent.kind === ts.SyntaxKind.InferType ? 8 /* InferType */ : 7 /* Type */, false, 2 /* Type */);
break;
case ts.SyntaxKind.ExportSpecifier:
if (node.propertyName !== undefined)
return this._scope.markExported(node.propertyName, node.name);
return this._scope.markExported(node.name);
case ts.SyntaxKind.ExportAssignment:
if (node.expression.kind === ts.SyntaxKind.Identifier)
return this._scope.markExported(node.expression);
break;
case ts.SyntaxKind.Identifier:
const domain = getUsageDomain(node);
if (domain !== undefined)
this._scope.addUse({ domain, location: node });
return;
}
return ts.forEachChild(node, cb);
};
const continueWithScope = (node, scope, next = forEachChild) => {
const savedScope = this._scope;
this._scope = scope;
next(node);
this._scope.end(variableCallback);
this._scope = savedScope;
};
const handleBlockScope = (node) => {
if (node.kind === ts.SyntaxKind.CatchClause && node.variableDeclaration !== undefined)
this._handleBindingName(node.variableDeclaration.name, true, false);
return ts.forEachChild(node, cb);
};
ts.forEachChild(sourceFile, cb);
this._scope.end(variableCallback);
return this._result;
function forEachChild(node) {
return ts.forEachChild(node, cb);
}
}
_handleConditionalType(node, cb, varCb) {
const savedScope = this._scope;
const scope = this._scope = new ConditionalTypeScope(savedScope);
cb(node.checkType);
scope.updateState(1 /* Extends */);
cb(node.extendsType);
scope.updateState(2 /* TrueType */);
cb(node.trueType);
scope.updateState(3 /* FalseType */);
cb(node.falseType);
scope.end(varCb);
this._scope = savedScope;
}
_handleFunctionLikeDeclaration(node, cb, varCb) {
if (node.decorators !== undefined)
node.decorators.forEach(cb);
const savedScope = this._scope;
if (node.kind === ts.SyntaxKind.FunctionDeclaration)
this._handleDeclaration(node, false, 4 /* Value */);
const scope = this._scope = node.kind === ts.SyntaxKind.FunctionExpression && node.name !== undefined
? new FunctionExpressionScope(node.name, savedScope)
: new FunctionScope(savedScope);
if (node.name !== undefined)
cb(node.name);
if (node.typeParameters !== undefined)
node.typeParameters.forEach(cb);
node.parameters.forEach(cb);
if (node.type !== undefined)
cb(node.type);
if (node.body !== undefined) {
scope.beginBody();
cb(node.body);
}
scope.end(varCb);
this._scope = savedScope;
}
_handleModule(node, next) {
if (node.flags & ts.NodeFlags.GlobalAugmentation)
return next(node, this._scope.createOrReuseNamespaceScope('-global', false, true, false));
if (node.name.kind === ts.SyntaxKind.Identifier) {
const exported = isNamespaceExported(node);
this._scope.addVariable(node.name.text, node.name, 1 /* Function */, exported, 1 /* Namespace */ | 4 /* Value */);
const ambient = util_1.hasModifier(node.modifiers, ts.SyntaxKind.DeclareKeyword);
return next(node, this._scope.createOrReuseNamespaceScope(node.name.text, exported, ambient, ambient && namespaceHasExportStatement(node)));
}
return next(node, this._scope.createOrReuseNamespaceScope(`"${node.name.text}"`, false, true, namespaceHasExportStatement(node)));
}
_handleDeclaration(node, blockScoped, domain) {
if (node.name !== undefined)
this._scope.addVariable(node.name.text, node.name, blockScoped ? 3 /* Block */ : 1 /* Function */, util_1.hasModifier(node.modifiers, ts.SyntaxKind.ExportKeyword), domain);
}
_handleBindingName(name, blockScoped, exported) {
if (name.kind === ts.SyntaxKind.Identifier)
return this._scope.addVariable(name.text, name, blockScoped ? 3 /* Block */ : 1 /* Function */, exported, 4 /* Value */);
util_1.forEachDestructuringIdentifier(name, (declaration) => {
this._scope.addVariable(declaration.name.text, declaration.name, blockScoped ? 3 /* Block */ : 1 /* Function */, exported, 4 /* Value */);
});
}
_handleVariableDeclaration(declarationList) {
const blockScoped = util_1.isBlockScopedVariableDeclarationList(declarationList);
const exported = declarationList.parent.kind === ts.SyntaxKind.VariableStatement &&
util_1.hasModifier(declarationList.parent.modifiers, ts.SyntaxKind.ExportKeyword);
for (const declaration of declarationList.declarations)
this._handleBindingName(declaration.name, blockScoped, exported);
}
}
function isNamespaceExported(node) {
return node.parent.kind === ts.SyntaxKind.ModuleDeclaration || util_1.hasModifier(node.modifiers, ts.SyntaxKind.ExportKeyword);
}
function namespaceHasExportStatement(ns) {
if (ns.body === undefined || ns.body.kind !== ts.SyntaxKind.ModuleBlock)
return false;
return containsExportStatement(ns.body);
}
function containsExportStatement(block) {
for (const statement of block.statements)
if (statement.kind === ts.SyntaxKind.ExportDeclaration || statement.kind === ts.SyntaxKind.ExportAssignment)
return true;
return false;
}
//# sourceMappingURL=usage.js.map
Zerion Mini Shell 1.0