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Copy pathprocessTypes.ts
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1799 lines (1499 loc) · 62.3 KB
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import {
sys,
getDefaultCompilerOptions,
createProgram,
createCompilerHost,
forEachChild,
getLeadingCommentRanges,
computeLineStarts,
createTextWriter,
combinePaths,
getNodeId,
getSymbolId,
getProperty,
hasProperty,
createSourceFile,
map,
SyntaxKind,
CompilerOptions,
CompilerHost,
Program,
TypeChecker,
CommentRange,
EmitTextWriter,
Node,
SourceFile,
Declaration,
ModuleDeclaration,
ModuleBlock,
InterfaceDeclaration,
TypeAliasDeclaration,
EnumDeclaration,
EnumMember,
PropertyDeclaration,
TypeNode,
TypeReferenceNode,
UnionTypeNode,
ExpressionWithTypeArguments,
ExpressionStatement,
Expression,
CallExpression,
PropertyAccessExpression,
ObjectLiteralExpression,
ArrayLiteralExpression,
PropertyAssignment,
LiteralExpression,
Identifier,
SymbolFlags,
Symbol,
SymbolTable,
TypeFlags,
Type,
TypeReference,
InterfaceType,
Map,
} from "./typescript-internal";
interface SyntaxNode {
kind?: SyntaxKind;
kindName?: string;
typeName?: string;
members?: SyntaxMember[];
options?: KindOptions;
}
interface SyntaxMember {
paramName?: string;
propertyName?: string;
typeName?: string;
elementTypeName?: string;
visitorFunction?: string;
isFactoryParam?: boolean;
isNode?: boolean;
isNodeArray?: boolean;
isModifiersArray?: boolean;
startsNewLexicalEnvironment?: boolean;
}
interface EnumValue<T extends number> {
symbol: Symbol;
value: T;
}
const enum FactoryHiddenState {
None,
Hidden,
Visible
}
interface KindOptions {
create: boolean | string;
update: boolean | string;
test: boolean | string;
}
const columnWrap = 150;
const emptyArray: any[] = [];
const annotationPattern = /@(\w+\s*[^\r\n]*)/g;
let options: CompilerOptions;
let host: CompilerHost;
let program: Program;
let checker: TypeChecker;
let typesSourceFile: SourceFile;
let factorySourceFile: SourceFile;
let transformSourceFile: SourceFile;
let utilitiesSourceFile: SourceFile;
let tsModuleSymbol: Symbol;
let nodeSymbol: Symbol;
let nodeArraySymbol: Symbol;
let modifiersArraySymbol: Symbol;
let syntaxKindSymbol: Symbol;
let syntaxNodes: SyntaxNode[] = [];
let annotationConstructors: Map<typeof Annotation> = {};
/**
* A one-to-many map of one Symbol to the many Annotations that are attached to its declarations.
*/
let symbolToAnnotations: Annotation[][] = [];
/**
* A one-to-many map of one node type Symbol to the many SyntaxKind Symbols it directly describes.
*/
let typeToSyntaxKinds: Symbol[][] = [];
/**
* A one-to-one map of one SyntaxKind Symbol to the one node type Symbol that directly describes it.
*/
let syntaxKindToType: Symbol[] = [];
let syntaxKindToSyntaxNode: SyntaxNode[] = [];
let nodeArrayTypeUsages: Map<boolean> = {};
let superTypeSymbolsForTypeSymbol: Symbol[][] = [];
let ancestorTypeSymbolsForTypeSymbol: Symbol[][] = [];
let descendantTypeSymbolsForTypeSymbol: Symbol[][] = [];
let descendantSyntaxKindSymbolsForTypeSymbol: Symbol[][] = [];
let typeSymbolsById: Symbol[] = [];
let syntaxKindTypeUsages: Map<Symbol[]> = {};
let memberTypeUsages: Map<boolean> = {};
let memberTypeUsageRedirects: Map<string> = {};
function main() {
if (sys.args.length < 3) {
sys.write("Usage:" + sys.newLine)
sys.write("\tnode processTypes.js <types-ts-input-file> <factory-ts-input-file> <transform-ts-input-file> <utilities-ts-input-file>" + sys.newLine);
return;
}
options = getCompilerOptions();
host = createCompilerHost(options);
let typesTsFileName = host.getCanonicalFileName(sys.resolvePath(sys.args[0]));
let factoryTsFileName = host.getCanonicalFileName(sys.resolvePath(sys.args[1]));
let transformTsFileName = host.getCanonicalFileName(sys.resolvePath(sys.args[2]));
let utilitiesTsFileName = host.getCanonicalFileName(sys.resolvePath(sys.args[3]));
program = createProgram([typesTsFileName, factoryTsFileName, transformTsFileName, utilitiesTsFileName], options, host);
checker = program.getTypeChecker();
typesSourceFile = program.getSourceFile(typesTsFileName);
factorySourceFile = program.getSourceFile(factoryTsFileName);
transformSourceFile = program.getSourceFile(transformTsFileName);
utilitiesSourceFile = program.getSourceFile(utilitiesTsFileName);
// Resolve common symbols
tsModuleSymbol = resolveQualifiedName(typesSourceFile, "ts", SymbolFlags.Module);
nodeSymbol = resolveQualifiedName(typesSourceFile, "ts.Node", SymbolFlags.Type);
nodeArraySymbol = resolveQualifiedName(typesSourceFile, "ts.NodeArray", SymbolFlags.Type);
modifiersArraySymbol = resolveQualifiedName(typesSourceFile, "ts.ModifiersArray", SymbolFlags.Type);
syntaxKindSymbol = resolveQualifiedName(typesSourceFile, "ts.SyntaxKind", SymbolFlags.Enum);
discover();
let factoryDirectory = sys.resolvePath(combinePaths(factoryTsFileName, ".."));
let factoryOutputFile = combinePaths(factoryDirectory, "factory.generated.ts");
generateFactory(factoryOutputFile);
let transformDirectory = sys.resolvePath(combinePaths(transformTsFileName, ".."));
let transformOutputFile = combinePaths(transformDirectory, "transform.generated.ts");
generateTransform(transformOutputFile);
}
/**
* Discovers type information and symbols for various SyntaxNodes
*/
function discover() {
// Discover each interface and type alias
let typeSymbols = getSymbols(tsModuleSymbol.exports, SymbolFlags.Interface | SymbolFlags.TypeAlias);
for (let typeSymbol of typeSymbols) {
let kindAnnotations = findAllAnnotations<KindAnnotation>(typeSymbol, KindAnnotation.match);
if (kindAnnotations.length) {
discoverSyntaxNodes(typeSymbol, kindAnnotations);
}
}
// Sort the syntax nodes by SyntaxKind
syntaxNodes.sort((a, b) => {
return a.kind - b.kind;
});
// Set up member type usage redirects for types with a single kind
for (let typeName in syntaxKindTypeUsages) {
if (syntaxKindTypeUsages[typeName].length === 1) {
memberTypeUsageRedirects[typeName] = syntaxKindTypeUsages[typeName][0].name;
}
}
function discoverTypeHierarchy(typeSymbol: Symbol) {
discoverTypeHierarchyWorker(typeSymbol, /*ancestorOrSelfTypeSymbol*/ typeSymbol);
}
function discoverTypeHierarchyWorker(typeSymbol: Symbol, ancestorOrSelfTypeSymbol: Symbol) {
let superTypeSymbols = getSuperTypeSymbols(ancestorOrSelfTypeSymbol);
for (let ancestorTypeSymbol of superTypeSymbols) {
let descendantTypeSymbols = descendantTypeSymbolsForTypeSymbol[getSymbolId(ancestorTypeSymbol)];
if (!descendantTypeSymbols) {
descendantTypeSymbols = descendantTypeSymbolsForTypeSymbol[getSymbolId(ancestorTypeSymbol)] = [];
discoverTypeHierarchyWorker(ancestorTypeSymbol, /*ancestorOrSelfTypeSymbol*/ ancestorTypeSymbol);
}
if (descendantTypeSymbols.indexOf(typeSymbol) === -1) {
descendantTypeSymbols.push(typeSymbol);
}
}
}
/**
* Discovers syntax nodes associated with a type and one or more syntax kinds.
*/
function discoverSyntaxNodes(typeSymbol: Symbol, kindAnnotations: KindAnnotation[]) {
// Skip this node if it is marked with @factoryhidden(true)
if (getFactoryHiddenStateForSymbol(typeSymbol) === FactoryHiddenState.Hidden) {
return;
}
getSuperTypeSymbols(typeSymbol, /*flattenHierarchy*/ true);
let symbolOrder: string[];
for (let kindAnnotation of kindAnnotations) {
let kind = kindAnnotation.kind;
let kindSymbol = kindAnnotation.kindSymbol;
let type = checker.getDeclaredTypeOfSymbol(typeSymbol);
recordTypeToSyntaxKindRelationships(typeSymbol, kindSymbol);
// Discover the members of the node type
var members: SyntaxMember[] = [];
for (let property of checker.getPropertiesOfType(type)) {
// Skip any hidden properties
if (getFactoryHiddenStateForProperty(typeSymbol, property.name) === FactoryHiddenState.Hidden) {
continue;
}
let visitorAnnotation = findFirstAnnotation<MemberVisitorAnnotation>(property, MemberVisitorAnnotation.match);
let visitorFunction = visitorAnnotation ? visitorAnnotation.functionName : undefined;
// Collect information about the type
let typeNode = getTypeNodeForProperty(property);
let propertyIsFactoryParam = isFactoryParamProperty(typeSymbol, property.name);
let propertyIsNode = typeNode && isSubtypeOf(typeNode, nodeSymbol);
let propertyIsNodeArray = typeNode && isNodeArray(typeNode);
let propertyIsModifiersArray = typeNode && isModifiersArray(typeNode);
if (propertyIsFactoryParam || propertyIsNodeArray || propertyIsModifiersArray || propertyIsNode) {
let typeName = typeNode ? normalizeTypeName(typeNode.getText()) : "any";
let elementTypeName =
propertyIsNodeArray ? normalizeTypeName((<TypeReferenceNode>typeNode).typeArguments[0].getText()) :
propertyIsModifiersArray ? "Modifier" :
undefined;
let propertyStartsNewLexicalEnvironment = propertyIsNode && startsNewLexicalEnvironment(property);
members.push({
propertyName: property.name,
paramName: property.name === "arguments" ? "_arguments" : property.name,
typeName: typeName,
elementTypeName: elementTypeName,
visitorFunction: visitorFunction,
isFactoryParam: propertyIsFactoryParam,
isNodeArray: propertyIsNodeArray,
isModifiersArray: propertyIsModifiersArray,
isNode: propertyIsNode,
startsNewLexicalEnvironment: propertyStartsNewLexicalEnvironment
});
if (!propertyIsFactoryParam) {
let typeNames = splitTypeName(propertyIsNode ? typeName : elementTypeName);
for (let typeName of typeNames) {
let typeSymbol = getSymbol(tsModuleSymbol.exports, typeName, SymbolFlags.Type);
if (typeSymbol) {
getSuperTypeSymbols(typeSymbol, /*flattenHierarchy*/ true);
}
}
recordTypeUsageForMember(propertyIsNode ? typeName : elementTypeName);
}
if (elementTypeName) {
nodeArrayTypeUsages[elementTypeName] = true;
}
}
}
// Sort the members of the type in the correct order for create and update methods
let kindOrder = getFactoryOrder(kindSymbol, /*inherited*/ false);
var overrides = kindOrder || symbolOrder || (symbolOrder = getFactoryOrder(typeSymbol, /*inherited*/ true));
if (overrides) {
let indices = members.map((_, i) => i);
indices.sort((a, b) => {
let aOverride = overrides.indexOf(members[a].propertyName);
let bOverride = overrides.indexOf(members[b].propertyName);
if (aOverride >= 0) {
if (bOverride >= 0) {
return aOverride - bOverride;
}
return -1;
}
else if (bOverride >= 0) {
return +1;
}
return a - b;
});
members = indices.map(i => members[i]);
}
// Add the syntax node
let syntaxNode: SyntaxNode = {
kind,
kindName: kindSymbol.name,
typeName: typeSymbol.name,
members,
options: kindAnnotation.options
};
syntaxNodes.push(syntaxNode);
syntaxKindToSyntaxNode[getSymbolId(kindSymbol)] = syntaxNode;
}
}
/**
* Records the various relationships between a node type Symbol and a SyntaxKind symbol.
*/
function recordTypeToSyntaxKindRelationships(typeSymbol: Symbol, kindSymbol: Symbol): void {
// Add the SyntaxKind Symbol to the set of SyntaxKind Symbols for the node type Symbol.
// NOTE: This could also be retrieved by reading its @kind annotations.
let syntaxKindsForType = getSyntaxKindSymbolsForTypeSymbol(typeSymbol, /*ensureExists*/ true);
if (syntaxKindsForType.indexOf(kindSymbol) === -1) {
syntaxKindsForType.push(kindSymbol);
}
// Set the node type Symbol for this SyntaxKind Symbol
syntaxKindToType[getSymbolId(kindSymbol)] = typeSymbol;
// Record the supertypes associated with this SyntaxKind Symbol
recordTypeUsagesForKind(kindSymbol, typeSymbol);
}
function recordTypeUsagesForKind(kindSymbol: Symbol, typeSymbol: Symbol) {
//memberTypeUsages[kindSymbol.name] = false;
recordTypeUsagesForKindWorker(kindSymbol, typeSymbol);
}
function recordTypeUsagesForKindWorker(kindSymbol: Symbol, typeSymbol: Symbol) {
let usages = syntaxKindTypeUsages[typeSymbol.name];
if (!usages) {
syntaxKindTypeUsages[typeSymbol.name] = usages = [];
}
if (usages.indexOf(kindSymbol) === -1) {
usages.push(kindSymbol);
}
for (let superType of getSuperTypeSymbols(typeSymbol)) {
recordTypeUsagesForKindWorker(kindSymbol, superType);
}
}
function recordTypeUsageForMember(typeName: string) {
if (!hasProperty(memberTypeUsages, typeName)) {
memberTypeUsages[typeName] = true;
}
}
function normalizeTypeName(typeName: string) {
let parts = typeName.split(/\s*\|\s*/g);
if (parts.length === 0) {
return parts[0];
}
parts.sort();
return parts.join(" | ");
}
function getTypeNodeForProperty(property: Symbol) {
return (<PropertyDeclaration>property.declarations[0]).type;
}
}
function generateFactory(outputFile: string) {
let writer = createLineWrappingTextWriter(host.getNewLine(), columnWrap);
writer.write(`// <auto-generated />`);
writer.writeLine();
writer.write(`/// <reference path="factory.ts" />`);
writer.writeLine();
writer.write(`namespace ts {`);
writer.writeLine();
// writer.increaseIndent();
// writer.write(`export namespace factory {`);
// writer.writeLine();
writer.increaseIndent();
writeCreateAndUpdateFunctions();
writeCloneFunction();
// writer.decreaseIndent();
// writer.write(`}`);
// writer.writeLine();
writeIsNodeFunctions();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
sys.writeFile(outputFile, writer.getText());
function writeCreateAndUpdateFunctions() {
for (let syntaxNode of syntaxNodes) {
writeCreateFunction(syntaxNode);
writeUpdateFunction(syntaxNode);
}
}
function writeIsNodeFunctions() {
for (let syntaxNode of syntaxNodes) {
writeIsNodeFunction(syntaxNode);
}
for (let typeName in memberTypeUsages) {
if (getProperty(memberTypeUsages, typeName) && !hasProperty(memberTypeUsageRedirects, typeName)) {
writeIsAnyNodeFunction(typeName);
}
}
}
function writeCreateFunction(syntaxNode: SyntaxNode) {
if (!syntaxNode.options.create) {
return;
}
let createFunctionName = getCreateFunctionName(syntaxNode);
// Skip the create function for this node if it is already defined in factory.ts
if (resolveQualifiedName(factorySourceFile, `ts.${createFunctionName}`, SymbolFlags.Function)) {
return;
}
writer.write(`export function ${createFunctionName}(`);
for (let member of syntaxNode.members) {
let type =
member.isNodeArray ? `Array<${member.elementTypeName}>` :
member.isModifiersArray ? `Array<Node>` :
member.typeName;
writer.write(`${member.paramName}?: ${type}, `);
}
writer.write(`location?: TextRange, flags?: NodeFlags): ${syntaxNode.typeName} {`);
writer.writeLine();
writer.increaseIndent();
if (syntaxNode.members.length) {
writer.write(`let node = createNode<${syntaxNode.typeName}>(SyntaxKind.${syntaxNode.kindName}, location, flags);`);
writer.writeLine();
if (syntaxNode.members.length > 1) {
writer.write(`if (`);
let first = true;
for (let member of syntaxNode.members) {
if (first) {
first = false;
}
else {
writer.write(` || `);
}
writer.write(member.paramName);
}
writer.write(`) {`);
writer.writeLine();
writer.increaseIndent();
}
for (let member of syntaxNode.members) {
if (member.isModifiersArray) {
writer.write(`setModifiers(node, modifiers);`);
}
else if (member.isNodeArray) {
writer.write(`node.${member.propertyName} = ${member.paramName} && createNodeArray(${member.paramName})`);
}
else {
writer.write(`node.${member.propertyName} = ${member.paramName};`);
}
writer.writeLine();
}
if (syntaxNode.members.length > 1) {
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
}
writer.write(`return node;`);
writer.writeLine();
}
else {
writer.write(`return createNode<${syntaxNode.typeName}>(SyntaxKind.${syntaxNode.kindName}, location, flags);`);
writer.writeLine();
}
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
}
function writeUpdateFunction(syntaxNode: SyntaxNode) {
if (!syntaxNode.options.update || !hasChildNodes(syntaxNode)) {
return;
}
let createFunctionName = getCreateFunctionName(syntaxNode);
let updateFunctionName = getUpdateFunctionName(syntaxNode);
// Skip the update function for this node if it is defined in factory.ts
if (resolveQualifiedName(factorySourceFile, `ts.${updateFunctionName}`, SymbolFlags.Function)) {
return;
}
writer.write(`export function ${updateFunctionName}(node: ${syntaxNode.typeName}`);
for (let i = 0; i < syntaxNode.members.length; ++i) {
let member = syntaxNode.members[i];
if (member.isFactoryParam) {
continue;
}
let type =
member.isNodeArray ? `Array<${member.elementTypeName}>` :
member.isModifiersArray ? `Array<Node>` :
member.typeName;
writer.write(`, ${member.paramName}: ${type}`);
}
writer.write(`): ${syntaxNode.typeName} {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`if (`);
let first = true;
for (let member of syntaxNode.members) {
if (member.isFactoryParam) {
continue;
}
if (first) {
first = false;
}
else {
writer.write(` || `);
}
writer.write(`${member.paramName} !== node.${member.propertyName}`);
}
writer.write(`) {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`let newNode = ${createFunctionName}(`);
for (let i = 0; i < syntaxNode.members.length; ++i) {
if (i > 0) {
writer.write(`, `);
}
let member = syntaxNode.members[i];
if (member.isFactoryParam) {
writer.write(`node.${member.propertyName}`);
}
else {
writer.write(member.paramName);
}
}
writer.write(`);`);
writer.writeLine();
writer.write(`return updateFrom(node, newNode);`);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
writer.write(`return node;`);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
}
function writeIsNodeFunction(syntaxNode: SyntaxNode) {
if (syntaxNode.typeName === "Node") {
return;
}
if (!syntaxNode.options.test) {
return;
}
// Skip the is function for this node if it is already defined
if (resolveQualifiedName(factorySourceFile, `ts.is${syntaxNode.kindName}`, SymbolFlags.Function)) {
return;
}
writer.write(`export function is${syntaxNode.kindName}(node: Node): node is ${syntaxNode.typeName} {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`return node && node.kind === SyntaxKind.${syntaxNode.kindName};`);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
}
function writeIsAnyNodeFunction(typeName: string) {
if (typeName === "Node") {
return;
}
let typeNames = splitTypeName(typeName);
let nodeTestFunction: string;
if (typeNames.length === 1) {
let typeSymbol = resolveExportedQualifiedName(tsModuleSymbol, typeName, SymbolFlags.Type);
if (typeSymbol) {
let nodeTestAnnotation = findFirstAnnotation(typeSymbol, NodeTestAnnotation.match);
if (nodeTestAnnotation) {
nodeTestFunction = nodeTestAnnotation.functionName;
}
}
}
if (!nodeTestFunction) {
nodeTestFunction = `is${typeNameToMethodNameSuffix(typeName)}`;
}
// Skip the is function for this type if it is already defined in factory.ts
if (resolveQualifiedName(factorySourceFile, `ts.${nodeTestFunction}`, SymbolFlags.Function)) {
return;
}
// Skip the is function for this type if has the same name as a SyntaxKind
if (getSymbol(syntaxKindSymbol.exports, typeName, SymbolFlags.EnumMember)) {
return;
}
writer.write(`export function ${nodeTestFunction}(node: Node): node is ${typeName} {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`if (node) {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`switch (node.kind) {`);
writer.writeLine();
writer.increaseIndent();
let kinds = getDescendantSyntaxKindSymbolsForTypeName(typeName);
for (let kind of kinds) {
writer.write(`case SyntaxKind.${kind.name}:`);
writer.writeLine();
}
if (kinds.length > 0) {
writer.increaseIndent();
writer.write(`return true;`);
writer.writeLine();
writer.decreaseIndent();
}
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
writer.write(`return false; `);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
}
function writeCloneFunction() {
writer.write(`export function cloneNode<TNode extends Node>(node: TNode, location?: TextRange, flags?: NodeFlags): TNode;`);
writer.writeLine();
writer.write(`export function cloneNode(node: Node, location?: TextRange, flags: NodeFlags = node.flags): Node {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`if (!node) {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`return node;`);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
writer.write(`switch (node.kind) {`);
writer.writeLine();
writer.increaseIndent();
for (let syntaxNode of syntaxNodes) {
if (!syntaxNode.options.create) {
continue;
}
let createFunctionName = getCreateFunctionName(syntaxNode);
writer.write(`case SyntaxKind.${syntaxNode.kindName}:`);
writer.writeLine();
writer.increaseIndent();
writer.write(`return ${createFunctionName}(`);
for (let member of syntaxNode.members) {
writer.write(`(<${syntaxNode.typeName}>node).${member.propertyName}, `);
}
writer.write(`location, flags);`);
writer.writeLine();
writer.decreaseIndent();
}
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
}
}
function generateTransform(outputFile: string) {
let writer = createTextWriter(host.getNewLine());
writer.write(`// <auto-generated />`);
writer.writeLine();
writer.write(`/// <reference path="factory.ts" />`);
writer.writeLine();
writer.write(`/// <reference path="transform.ts" />`);
writer.writeLine();
writer.write(`/* @internal */`);
writer.writeLine();
writer.write(`namespace ts {`);
writer.writeLine();
writer.increaseIndent();
writeAcceptFunction();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
sys.writeFile(outputFile, writer.getText());
function writeAcceptFunction() {
writer.write(`export function accept(transformer: Transformer, node: Node, pipeline: Pipeline<Node, Node>, write: PipelineOutput<Node>): void {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`if (!node) {`);
writer.writeLine();
writer.increaseIndent();
writer.write(`return;`);
writer.writeLine();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
writer.write(`let { visitNode, visitNodes } = transformer;`);
writer.writeLine();
writer.write(`switch (node.kind) {`);
writer.writeLine();
writer.increaseIndent();
for (let syntaxNode of syntaxNodes) {
if (!hasChildNodes(syntaxNode) || syntaxNode.kindName === "SourceFile") {
continue;
}
writer.write(`case SyntaxKind.${syntaxNode.kindName}:`);
writer.writeLine();
writer.increaseIndent();
let updateFunctionName = getUpdateFunctionName(syntaxNode);
writer.write(`return write(${updateFunctionName}(`);
writer.increaseIndent();
writer.write(`<${syntaxNode.typeName}>node`);
for (let member of syntaxNode.members) {
if (member.isFactoryParam) {
continue;
}
writer.write(`, `);
writer.writeLine();
if (member.typeName === "Node") {
writer.write(`(<${syntaxNode.typeName}>node).${member.propertyName}`);
}
else {
let isStatement = member.typeName === "Statement";
let visitorFunction =
member.visitorFunction ? member.visitorFunction :
member.isNodeArray || member.isModifiersArray ? `visitNodes` :
`visitNode`;
writer.write(`${visitorFunction}(`);
if (member.visitorFunction) {
writer.write(`transformer, `);
}
writer.write(`(<${syntaxNode.typeName}>node).${member.propertyName}, pipeline`);
if (isStatement) {
writer.write(`, PipelineFlags.StatementOrBlock`);
}
else if (member.startsNewLexicalEnvironment) {
writer.write(`, PipelineFlags.LexicalEnvironment`);
}
writer.write(`)`);
}
}
writer.write(`));`);
writer.writeLine();
writer.decreaseIndent();
writer.decreaseIndent();
}
writer.write(`default:`);
writer.writeLine();
writer.increaseIndent();
writer.write(`return write(node);`);
writer.writeLine();
writer.decreaseIndent();
writer.decreaseIndent();
writer.write(`}`);
writer.writeLine();
writer.decreaseIndent();
writer.write('}');
writer.writeLine();
}
}
//
// Utilities
//
function splitTypeName(typeName: string) {
return typeName.split(/\s*\|\s*/g);
}
function typeNameToMethodNameSuffix(typeName: string) {
let typeNames = splitTypeName(typeName);
typeNames = typeNames.map(typeNameToSyntaxKindOrTypeName);
return typeNames.join("Or");
}
function typeNameToSyntaxKindOrTypeName(typeName: string) {
let typeSymbol = getSymbol(tsModuleSymbol.exports, typeName, SymbolFlags.Type);
let syntaxKindSymbols = getDescendantSyntaxKindSymbolsForTypeSymbol(typeSymbol);
if (syntaxKindSymbols && syntaxKindSymbols.length === 1) {
return syntaxKindSymbols[0].name;
}
return typeName;
}
function fillKindsForType(typeSymbol: Symbol, kinds: Symbol[]) {
let usages = getProperty(syntaxKindTypeUsages, typeSymbol.name);
if (usages) {
for (let usage of usages) {
if (kinds.indexOf(usage) === -1) {
kinds.push(usage);
}
}
}
else if (typeSymbol.declarations[0].kind === SyntaxKind.TypeAliasDeclaration) {
for (let superType of getSuperTypeSymbols(typeSymbol)) {
fillKindsForType(superType, kinds);
}
}
}
/**
* Resolves a symbol with the specified name and meaning starting at the provided location.
* @param location The node at which to resolve the name.
* @param name The name of a symbol to resolve.
* @param meaning The meaning of the symbol.
*/
function resolveName(location: Node, name: string, meaning: SymbolFlags): Symbol {
let symbols = checker.getSymbolsInScope(location, meaning);
for (let symbol of symbols) {
if (symbol.name === name) {
return symbol;
}
}
return undefined;
}
/**
* Gets a symbol with the specified name and meaning from the provided symbol table.
* @param symbols The symbol table from which to retrieve a named symbol.
* @param name The name of the symbol to retrieve.
* @param meaning The meaning of the symbol.
*/
function getSymbol(symbols: SymbolTable, name: string, meaning: SymbolFlags): Symbol {
if (symbols && meaning && hasProperty(symbols, name)) {
let symbol = symbols[name];
if (symbol.flags & meaning) {
return symbol;
}
}
return undefined;
}
/**
* Gets al symbols with the specified meaning from the provided symbol table.
* @param symbols The symbol table from which to retrieve symbols.
* @param meaning The meaning of each symbol.
*/
function getSymbols(symbols: SymbolTable, meaning: SymbolFlags): Symbol[] {
let results: Symbol[];
if (symbols && meaning) {
for (let name in symbols) {
let symbol = getProperty(symbols, name);
if (symbol && symbol.flags & meaning) {
if (!results) {
results = [];
}
results.push(symbol);
}
}
}
return results || emptyArray;
}
/**
* Resolves a symbol with the specified fully qualified name and meaning starting at the provided location.
* @param location The node at which to resolve the name.
* @param name A dot-seperated name for the symbol to retrieve.
* @param meaning The meaning of the symbol.
*/
function resolveQualifiedName(location: Node, name: string, meaning: SymbolFlags): Symbol {
return resolveQualifiedNameParts(location, name.split("."), meaning);
}
function resolveExportedQualifiedName(symbol: Symbol, name: string, meaning: SymbolFlags): Symbol {
return resolveExportedQualifiedNameParts(symbol, name.split("."), meaning);
}
function resolveExportedQualifiedNameParts(symbol: Symbol, qn: string[], meaning: SymbolFlags): Symbol {
if (qn.length === 1) {
return getSymbol(symbol.exports, qn[0], meaning);