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Merge pull request #19599 from Snuffleupagus/ColorSpace-rm-parseAsync
Remove `ColorSpaceUtils.parseAsync` and simplify the ColorSpace "API-surface"
This commit is contained in:
Jonas Jenwald
GitHub
commit
fedfdf9d10
2 changed files with 90 additions and 170 deletions
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@ -25,112 +25,12 @@ import {
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LabCS,
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PatternCS,
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} from "./colorspace.js";
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import { assert, shadow, warn } from "../shared/util.js";
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import { Dict, Name, Ref } from "./primitives.js";
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import { shadow, unreachable, warn } from "../shared/util.js";
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import { IccColorSpace } from "./icc_colorspace.js";
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import { MissingDataException } from "./core_utils.js";
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class ColorSpaceUtils {
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/**
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* @private
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*/
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static #cache(
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cacheKey,
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parsedCS,
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{ xref, globalColorSpaceCache, localColorSpaceCache }
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) {
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if (!globalColorSpaceCache || !localColorSpaceCache) {
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throw new Error(
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'ColorSpace.#cache - expected "globalColorSpaceCache"/"localColorSpaceCache" argument.'
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);
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}
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if (!parsedCS) {
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throw new Error('ColorSpace.#cache - expected "parsedCS" argument.');
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}
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let csName, csRef;
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if (cacheKey instanceof Ref) {
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csRef = cacheKey;
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// If parsing succeeded, we know that this call cannot throw.
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cacheKey = xref.fetch(cacheKey);
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}
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if (cacheKey instanceof Name) {
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csName = cacheKey.name;
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}
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if (csName || csRef) {
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localColorSpaceCache.set(csName, csRef, parsedCS);
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if (csRef) {
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globalColorSpaceCache.set(/* name = */ null, csRef, parsedCS);
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}
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}
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}
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static getCached(
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cacheKey,
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xref,
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globalColorSpaceCache,
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localColorSpaceCache
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) {
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if (!globalColorSpaceCache || !localColorSpaceCache) {
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throw new Error(
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'ColorSpace.getCached - expected "globalColorSpaceCache"/"localColorSpaceCache" argument.'
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);
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}
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if (cacheKey instanceof Ref) {
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const cachedCS =
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globalColorSpaceCache.getByRef(cacheKey) ||
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localColorSpaceCache.getByRef(cacheKey);
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if (cachedCS) {
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return cachedCS;
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}
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try {
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cacheKey = xref.fetch(cacheKey);
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} catch (ex) {
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if (ex instanceof MissingDataException) {
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throw ex;
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}
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// Any errors should be handled during parsing, rather than here.
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}
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}
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if (cacheKey instanceof Name) {
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return localColorSpaceCache.getByName(cacheKey.name) || null;
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}
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return null;
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}
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static async parseAsync({
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cs,
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xref,
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resources = null,
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pdfFunctionFactory,
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globalColorSpaceCache,
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localColorSpaceCache,
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}) {
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if (typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING")) {
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assert(
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!this.getCached(cs, xref, globalColorSpaceCache, localColorSpaceCache),
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"Expected `ColorSpace.getCached` to have been manually checked " +
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"before calling `ColorSpace.parseAsync`."
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);
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}
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const options = {
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xref,
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resources,
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pdfFunctionFactory,
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globalColorSpaceCache,
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localColorSpaceCache,
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};
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const parsedCS = this.#parse(cs, options);
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// Attempt to cache the parsed ColorSpace, by name and/or reference.
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this.#cache(cs, parsedCS, options);
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return parsedCS;
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}
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static parse({
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cs,
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xref,
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@ -138,17 +38,16 @@ class ColorSpaceUtils {
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pdfFunctionFactory,
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globalColorSpaceCache,
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localColorSpaceCache,
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asyncIfNotCached = false,
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}) {
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const cachedCS = this.getCached(
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cs,
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xref,
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globalColorSpaceCache,
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localColorSpaceCache
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);
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if (cachedCS) {
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return cachedCS;
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if (
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(typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING")) &&
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(!globalColorSpaceCache || !localColorSpaceCache)
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) {
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unreachable(
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'ColorSpaceUtils.parse - expected "globalColorSpaceCache"/"localColorSpaceCache" argument.'
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);
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}
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const options = {
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xref,
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resources,
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@ -156,12 +55,47 @@ class ColorSpaceUtils {
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globalColorSpaceCache,
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localColorSpaceCache,
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};
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const parsedCS = this.#parse(cs, options);
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let csName, csRef, parsedCS;
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// Check if the ColorSpace is cached first, to avoid re-parsing it.
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if (cs instanceof Ref) {
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csRef = cs;
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const cachedCS =
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globalColorSpaceCache.getByRef(csRef) ||
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localColorSpaceCache.getByRef(csRef);
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if (cachedCS) {
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return cachedCS;
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}
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cs = xref.fetch(cs);
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}
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if (cs instanceof Name) {
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csName = cs.name;
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const cachedCS = localColorSpaceCache.getByName(csName);
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if (cachedCS) {
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return cachedCS;
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}
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}
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try {
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parsedCS = this.#parse(cs, options);
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} catch (ex) {
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if (asyncIfNotCached && !(ex instanceof MissingDataException)) {
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return Promise.reject(ex);
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}
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throw ex;
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}
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// Attempt to cache the parsed ColorSpace, by name and/or reference.
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this.#cache(cs, parsedCS, options);
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if (csName || csRef) {
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localColorSpaceCache.set(csName, csRef, parsedCS);
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return parsedCS;
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if (csRef) {
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globalColorSpaceCache.set(/* name = */ null, csRef, parsedCS);
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}
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}
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return asyncIfNotCached ? Promise.resolve(parsedCS) : parsedCS;
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}
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/**
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@ -170,14 +104,16 @@ class ColorSpaceUtils {
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*/
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static #subParse(cs, options) {
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const { globalColorSpaceCache } = options;
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let csRef;
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// Check if the ColorSpace is cached first, to avoid re-parsing it.
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if (cs instanceof Ref) {
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const cachedCS = globalColorSpaceCache.getByRef(cs);
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csRef = cs;
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const cachedCS = globalColorSpaceCache.getByRef(csRef);
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if (cachedCS) {
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return cachedCS;
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}
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csRef = cs;
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}
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const parsedCS = this.#parse(cs, options);
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@ -189,7 +125,8 @@ class ColorSpaceUtils {
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}
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static #parse(cs, options) {
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const { xref, resources, pdfFunctionFactory } = options;
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const { xref, resources, pdfFunctionFactory, globalColorSpaceCache } =
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options;
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cs = xref.fetchIfRef(cs);
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if (cs instanceof Name) {
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@ -254,7 +191,6 @@ class ColorSpaceUtils {
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const matrix = params.getArray("Matrix");
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return new CalRGBCS(whitePoint, blackPoint, gamma, matrix);
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case "ICCBased":
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const { globalColorSpaceCache } = options;
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const isRef = cs[1] instanceof Ref;
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if (isRef) {
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const cachedCS = globalColorSpaceCache.getByRef(cs[1]);
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@ -68,6 +68,7 @@ import {
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} from "./image_utils.js";
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import { BaseStream } from "./base_stream.js";
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import { bidi } from "./bidi.js";
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import { ColorSpace } from "./colorspace.js";
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import { ColorSpaceUtils } from "./colorspace_utils.js";
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import { DecodeStream } from "./decode_stream.js";
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import { FontFlags } from "./fonts_utils.js";
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@ -489,23 +490,13 @@ class PartialEvaluator {
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groupOptions.isolated = group.get("I") || false;
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groupOptions.knockout = group.get("K") || false;
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if (group.has("CS")) {
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const cs = group.getRaw("CS");
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const cachedColorSpace = ColorSpaceUtils.getCached(
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cs,
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this.xref,
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this.globalColorSpaceCache,
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const cs = this._getColorSpace(
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group.getRaw("CS"),
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resources,
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localColorSpaceCache
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);
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if (cachedColorSpace) {
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colorSpace = cachedColorSpace;
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} else {
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colorSpace = await this.parseColorSpace({
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cs,
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resources,
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localColorSpaceCache,
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});
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}
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colorSpace =
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cs instanceof ColorSpace ? cs : await this._handleColorSpace(cs);
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}
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}
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@ -1462,24 +1453,31 @@ class PartialEvaluator {
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}
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}
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parseColorSpace({ cs, resources, localColorSpaceCache }) {
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return ColorSpaceUtils.parseAsync({
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_getColorSpace(cs, resources, localColorSpaceCache) {
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return ColorSpaceUtils.parse({
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cs,
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xref: this.xref,
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resources,
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pdfFunctionFactory: this._pdfFunctionFactory,
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globalColorSpaceCache: this.globalColorSpaceCache,
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localColorSpaceCache,
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}).catch(reason => {
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if (reason instanceof AbortException) {
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asyncIfNotCached: true,
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});
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}
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async _handleColorSpace(csPromise) {
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try {
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return await csPromise;
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} catch (ex) {
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if (ex instanceof AbortException) {
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return null;
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}
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if (this.options.ignoreErrors) {
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warn(`parseColorSpace - ignoring ColorSpace: "${reason}".`);
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warn(`_handleColorSpace - ignoring ColorSpace: "${ex}".`);
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return null;
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}
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throw reason;
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});
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throw ex;
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}
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}
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parseShading({
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@ -1981,54 +1979,40 @@ class PartialEvaluator {
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break;
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case OPS.setFillColorSpace: {
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const cachedColorSpace = ColorSpaceUtils.getCached(
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const fillCS = self._getColorSpace(
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args[0],
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xref,
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self.globalColorSpaceCache,
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resources,
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localColorSpaceCache
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);
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if (cachedColorSpace) {
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stateManager.state.fillColorSpace = cachedColorSpace;
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if (fillCS instanceof ColorSpace) {
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stateManager.state.fillColorSpace = fillCS;
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continue;
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}
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next(
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self
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.parseColorSpace({
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cs: args[0],
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resources,
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localColorSpaceCache,
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})
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.then(function (colorSpace) {
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stateManager.state.fillColorSpace =
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colorSpace || ColorSpaceUtils.singletons.gray;
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})
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self._handleColorSpace(fillCS).then(colorSpace => {
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stateManager.state.fillColorSpace =
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colorSpace || ColorSpaceUtils.singletons.gray;
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})
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);
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return;
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}
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case OPS.setStrokeColorSpace: {
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const cachedColorSpace = ColorSpaceUtils.getCached(
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const strokeCS = self._getColorSpace(
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args[0],
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xref,
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self.globalColorSpaceCache,
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resources,
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localColorSpaceCache
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);
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if (cachedColorSpace) {
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stateManager.state.strokeColorSpace = cachedColorSpace;
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if (strokeCS instanceof ColorSpace) {
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stateManager.state.strokeColorSpace = strokeCS;
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continue;
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}
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next(
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self
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.parseColorSpace({
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cs: args[0],
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resources,
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localColorSpaceCache,
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})
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.then(function (colorSpace) {
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stateManager.state.strokeColorSpace =
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colorSpace || ColorSpaceUtils.singletons.gray;
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})
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self._handleColorSpace(strokeCS).then(colorSpace => {
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stateManager.state.strokeColorSpace =
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colorSpace || ColorSpaceUtils.singletons.gray;
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})
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);
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return;
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}
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