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Copy pathtypeWriter.ts
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76 lines (65 loc) · 3.13 KB
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interface TypeWriterResult {
line: number;
syntaxKind: number;
sourceText: string;
type: string;
symbol: string;
}
class TypeWriterWalker {
results: TypeWriterResult[];
currentSourceFile: ts.SourceFile;
private checker: ts.TypeChecker;
constructor(private program: ts.Program, fullTypeCheck: boolean) {
// Consider getting both the diagnostics checker and the non-diagnostics checker to verify
// they are consistent.
this.checker = fullTypeCheck
? program.getDiagnosticsProducingTypeChecker()
: program.getTypeChecker();
}
public getTypeAndSymbols(fileName: string): TypeWriterResult[] {
const sourceFile = this.program.getSourceFile(fileName);
this.currentSourceFile = sourceFile;
this.results = [];
this.visitNode(sourceFile);
return this.results;
}
private visitNode(node: ts.Node): void {
if (ts.isPartOfExpression(node) || node.kind === ts.SyntaxKind.Identifier) {
this.logTypeAndSymbol(node);
}
ts.forEachChild(node, child => this.visitNode(child));
}
private logTypeAndSymbol(node: ts.Node): void {
const actualPos = ts.skipTrivia(this.currentSourceFile.text, node.pos);
const lineAndCharacter = this.currentSourceFile.getLineAndCharacterOfPosition(actualPos);
const sourceText = ts.getTextOfNodeFromSourceText(this.currentSourceFile.text, node);
// Workaround to ensure we output 'C' instead of 'typeof C' for base class expressions
// let type = this.checker.getTypeAtLocation(node);
const type = node.parent && ts.isExpressionWithTypeArgumentsInClassExtendsClause(node.parent) && this.checker.getTypeAtLocation(node.parent) || this.checker.getTypeAtLocation(node);
ts.Debug.assert(type !== undefined, "type doesn't exist");
const symbol = this.checker.getSymbolAtLocation(node);
const typeString = this.checker.typeToString(type, node.parent, ts.TypeFormatFlags.NoTruncation);
let symbolString: string;
if (symbol) {
symbolString = "Symbol(" + this.checker.symbolToString(symbol, node.parent);
if (symbol.declarations) {
for (const declaration of symbol.declarations) {
symbolString += ", ";
const declSourceFile = declaration.getSourceFile();
const declLineAndCharacter = declSourceFile.getLineAndCharacterOfPosition(declaration.pos);
const fileName = ts.getBaseFileName(declSourceFile.fileName);
const isLibFile = /lib(.*)\.d\.ts/i.test(fileName);
symbolString += `Decl(${ fileName }, ${ isLibFile ? "--" : declLineAndCharacter.line }, ${ isLibFile ? "--" : declLineAndCharacter.character })`;
}
}
symbolString += ")";
}
this.results.push({
line: lineAndCharacter.line,
syntaxKind: node.kind,
sourceText,
type: typeString,
symbol: symbolString
});
}
}