mirror of
https://github.com/denoland/std.git
synced 2024-11-22 04:59:05 +00:00
Tim Reichen
GitHub
parent
ed19729127
commit
ddfeff9159
252
yaml/_loader.ts
252
yaml/_loader.ts
@ -210,6 +210,131 @@ class LoaderState {
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const error = this.#createError(message);
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this.onWarning?.(error);
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}
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readDocument() {
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const documentStart = this.position;
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let position: number;
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let directiveName: string;
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let directiveArgs: string[];
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let hasDirectives = false;
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let ch: number;
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this.version = null;
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this.checkLineBreaks = false;
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this.tagMap = Object.create(null);
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this.anchorMap = Object.create(null);
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while ((ch = this.peek()) !== 0) {
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skipSeparationSpace(this, true, -1);
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ch = this.peek();
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if (this.lineIndent > 0 || ch !== PERCENT) {
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break;
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}
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hasDirectives = true;
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ch = this.next();
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position = this.position;
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while (ch !== 0 && !isWhiteSpaceOrEOL(ch)) {
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ch = this.next();
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}
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directiveName = this.input.slice(position, this.position);
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directiveArgs = [];
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if (directiveName.length < 1) {
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return this.throwError(
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"directive name must not be less than one character in length",
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);
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}
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while (ch !== 0) {
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while (isWhiteSpace(ch)) {
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ch = this.next();
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}
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if (ch === SHARP) {
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do {
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ch = this.next();
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} while (ch !== 0 && !isEOL(ch));
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break;
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}
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if (isEOL(ch)) break;
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position = this.position;
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while (ch !== 0 && !isWhiteSpaceOrEOL(ch)) {
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ch = this.next();
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}
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directiveArgs.push(this.input.slice(position, this.position));
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}
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if (ch !== 0) readLineBreak(this);
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switch (directiveName) {
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case "YAML":
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yamlDirectiveHandler(this, ...directiveArgs);
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break;
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case "TAG":
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tagDirectiveHandler(this, ...directiveArgs);
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break;
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default:
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this.dispatchWarning(
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`unknown document directive "${directiveName}"`,
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);
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break;
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}
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}
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skipSeparationSpace(this, true, -1);
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if (
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this.lineIndent === 0 &&
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this.peek() === MINUS &&
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this.peek(1) === MINUS &&
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this.peek(2) === MINUS
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) {
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this.position += 3;
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skipSeparationSpace(this, true, -1);
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} else if (hasDirectives) {
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return this.throwError("directives end mark is expected");
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}
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composeNode(this, this.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
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skipSeparationSpace(this, true, -1);
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if (
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this.checkLineBreaks &&
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PATTERN_NON_ASCII_LINE_BREAKS.test(
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this.input.slice(documentStart, this.position),
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)
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) {
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this.dispatchWarning("non-ASCII line breaks are interpreted as content");
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}
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if (this.position === this.lineStart && testDocumentSeparator(this)) {
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if (this.peek() === DOT) {
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this.position += 3;
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skipSeparationSpace(this, true, -1);
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}
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} else if (this.position < this.length - 1) {
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return this.throwError(
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"end of the stream or a document separator is expected",
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);
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}
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return this.result;
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}
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*readDocuments() {
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while (this.position < this.length - 1) {
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yield this.readDocument();
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}
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}
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}
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function yamlDirectiveHandler(state: LoaderState, ...args: string[]) {
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@ -1567,129 +1692,6 @@ function composeNode(
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return state.tag !== null || state.anchor !== null || hasContent;
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}
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function readDocument(state: LoaderState) {
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const documentStart = state.position;
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let position: number;
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let directiveName: string;
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let directiveArgs: string[];
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let hasDirectives = false;
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let ch: number;
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state.version = null;
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state.checkLineBreaks = false;
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state.tagMap = Object.create(null);
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state.anchorMap = Object.create(null);
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while ((ch = state.peek()) !== 0) {
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skipSeparationSpace(state, true, -1);
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ch = state.peek();
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if (state.lineIndent > 0 || ch !== PERCENT) {
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break;
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}
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hasDirectives = true;
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ch = state.next();
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position = state.position;
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while (ch !== 0 && !isWhiteSpaceOrEOL(ch)) {
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ch = state.next();
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}
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directiveName = state.input.slice(position, state.position);
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directiveArgs = [];
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if (directiveName.length < 1) {
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return state.throwError(
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"directive name must not be less than one character in length",
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);
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}
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while (ch !== 0) {
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while (isWhiteSpace(ch)) {
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ch = state.next();
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}
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if (ch === SHARP) {
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do {
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ch = state.next();
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} while (ch !== 0 && !isEOL(ch));
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break;
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}
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if (isEOL(ch)) break;
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position = state.position;
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while (ch !== 0 && !isWhiteSpaceOrEOL(ch)) {
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ch = state.next();
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}
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directiveArgs.push(state.input.slice(position, state.position));
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}
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if (ch !== 0) readLineBreak(state);
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switch (directiveName) {
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case "YAML":
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yamlDirectiveHandler(state, ...directiveArgs);
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break;
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case "TAG":
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tagDirectiveHandler(state, ...directiveArgs);
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break;
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default:
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state.dispatchWarning(`unknown document directive "${directiveName}"`);
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break;
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}
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}
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skipSeparationSpace(state, true, -1);
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if (
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state.lineIndent === 0 &&
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state.peek() === MINUS &&
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state.peek(1) === MINUS &&
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state.peek(2) === MINUS
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) {
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state.position += 3;
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skipSeparationSpace(state, true, -1);
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} else if (hasDirectives) {
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return state.throwError("directives end mark is expected");
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}
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composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
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skipSeparationSpace(state, true, -1);
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if (
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state.checkLineBreaks &&
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PATTERN_NON_ASCII_LINE_BREAKS.test(
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state.input.slice(documentStart, state.position),
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)
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) {
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state.dispatchWarning("non-ASCII line breaks are interpreted as content");
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}
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if (state.position === state.lineStart && testDocumentSeparator(state)) {
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if (state.peek() === DOT) {
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state.position += 3;
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skipSeparationSpace(state, true, -1);
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}
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} else if (state.position < state.length - 1) {
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return state.throwError(
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"end of the stream or a document separator is expected",
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);
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}
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return state.result;
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}
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function* readDocuments(state: LoaderState) {
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while (state.position < state.length - 1) {
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yield readDocument(state);
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}
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}
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function sanitizeInput(input: string) {
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input = String(input);
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@ -1713,13 +1715,13 @@ export function loadDocuments(
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): unknown[] {
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input = sanitizeInput(input);
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const state = new LoaderState(input, options);
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return [...readDocuments(state)];
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return [...state.readDocuments()];
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}
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export function load(input: string, options: LoaderStateOptions = {}): unknown {
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input = sanitizeInput(input);
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const state = new LoaderState(input, options);
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const documentGenerator = readDocuments(state);
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const documentGenerator = state.readDocuments();
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const document = documentGenerator.next().value;
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if (!documentGenerator.next().done) {
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throw new SyntaxError(
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