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@@ -1,5 +1,4 @@
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import { assert } from './assert'
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import { ParserErrorTypes } from './errorTypes'
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import { ParserErrorTypes } from './parserErrorTypes'
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import {
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Node,
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AttributeNode,
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@@ -60,93 +59,6 @@ export function parse(content: string, options: ParserOptions): RootNode {
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}
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}
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function last<T>(xs: T[]): T | undefined {
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return xs[xs.length - 1]
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}
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function startsWith(source: string, searchString: string): boolean {
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return source.startsWith(searchString)
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}
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function advanceBy(context: ParserContext, numberOfCharacters: number): void {
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__DEV__ && assert(numberOfCharacters <= context.source.length)
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const { column, source } = context
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const str = source.slice(0, numberOfCharacters)
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const lines = str.split(/\r?\n/)
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context.source = source.slice(numberOfCharacters)
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context.offset += numberOfCharacters
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context.line += lines.length - 1
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context.column =
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lines.length === 1
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? column + numberOfCharacters
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: Math.max(1, lines.pop()!.length)
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}
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function advanceSpaces(context: ParserContext): void {
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const match = /^[\t\r\n\f ]+/.exec(context.source)
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if (match) {
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advanceBy(context, match[0].length)
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}
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}
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function getCursor(context: ParserContext): Position {
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const { column, line, offset } = context
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return { column, line, offset }
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}
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function getNewPosition(
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context: ParserContext,
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start: Position,
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numberOfCharacters: number
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): Position {
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const { originalSource } = context
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const str = originalSource.slice(start.offset, numberOfCharacters)
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const lines = str.split(/\r?\n/)
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const newPosition = {
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column: start.column,
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line: start.line,
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offset: start.offset
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}
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newPosition.offset += numberOfCharacters
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newPosition.line += lines.length - 1
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newPosition.column =
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lines.length === 1
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? start.column + numberOfCharacters
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: Math.max(1, lines.pop()!.length)
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return newPosition
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}
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function getSelection(
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context: ParserContext,
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start: Position,
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end?: Position
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): SourceLocation {
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end = end || getCursor(context)
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return {
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start,
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end,
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source: context.originalSource.slice(start.offset, end.offset)
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}
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}
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function emitError(
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context: ParserContext,
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type: ParserErrorTypes,
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offset?: number
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): void {
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const loc = getCursor(context)
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if (offset) {
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loc.offset += offset
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loc.column += offset
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}
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context.onError(type, loc)
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}
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function createParserContext(
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content: string,
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options: ParserOptions
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@@ -165,6 +77,11 @@ function createParserContext(
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}
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}
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function getCursor(context: ParserContext): Position {
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const { column, line, offset } = context
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return { column, line, offset }
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}
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function parseChildren(
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context: ParserContext,
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mode: TextModes,
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@@ -255,6 +172,88 @@ function parseChildren(
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return nodes
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}
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function getSelection(
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context: ParserContext,
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start: Position,
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end?: Position
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): SourceLocation {
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end = end || getCursor(context)
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return {
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start,
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end,
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source: context.originalSource.slice(start.offset, end.offset)
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}
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}
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function last<T>(xs: T[]): T | undefined {
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return xs[xs.length - 1]
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}
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function startsWith(source: string, searchString: string): boolean {
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return source.startsWith(searchString)
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}
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function advanceBy(context: ParserContext, numberOfCharacters: number): void {
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__DEV__ && assert(numberOfCharacters <= context.source.length)
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const { column, source } = context
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const str = source.slice(0, numberOfCharacters)
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const lines = str.split(/\r?\n/)
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context.source = source.slice(numberOfCharacters)
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context.offset += numberOfCharacters
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context.line += lines.length - 1
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context.column =
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lines.length === 1
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? column + numberOfCharacters
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: Math.max(1, lines.pop()!.length)
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}
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function advanceSpaces(context: ParserContext): void {
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const match = /^[\t\r\n\f ]+/.exec(context.source)
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if (match) {
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advanceBy(context, match[0].length)
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}
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}
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function getNewPosition(
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context: ParserContext,
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start: Position,
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numberOfCharacters: number
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): Position {
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const { originalSource } = context
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const str = originalSource.slice(start.offset, numberOfCharacters)
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const lines = str.split(/\r?\n/)
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const newPosition = {
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column: start.column,
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line: start.line,
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offset: start.offset
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}
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newPosition.offset += numberOfCharacters
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newPosition.line += lines.length - 1
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newPosition.column =
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lines.length === 1
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? start.column + numberOfCharacters
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: Math.max(1, lines.pop()!.length)
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return newPosition
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}
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function emitError(
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context: ParserContext,
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type: ParserErrorTypes,
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offset?: number
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): void {
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const loc = getCursor(context)
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if (offset) {
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loc.offset += offset
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loc.column += offset
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}
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context.onError(type, loc)
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}
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function isEnd(
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context: ParserContext,
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mode: TextModes,
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@@ -918,3 +917,9 @@ const CCR_REPLACEMENTS: { [key: number]: number | undefined } = {
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0x9e: 0x017e,
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0x9f: 0x0178
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}
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function assert(condition: boolean, msg?: string) {
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if (!condition) {
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throw new Error(msg || `unexpected parser condition`)
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}
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}
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