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/*
* Copyright 2009 The Closure Compiler Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.javascript.jscomp;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.base.Ascii;
import com.google.common.base.MoreObjects;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.LinkedHashMultimap;
import com.google.common.collect.Multimap;
import com.google.common.primitives.Chars;
import com.google.javascript.jscomp.deps.ModuleLoader;
import com.google.javascript.jscomp.deps.ModuleLoader.ResolutionMode;
import com.google.javascript.jscomp.parsing.Config;
import com.google.javascript.jscomp.parsing.parser.FeatureSet;
import com.google.javascript.jscomp.parsing.parser.util.format.SimpleFormat;
import com.google.javascript.jscomp.resources.ResourceLoader;
import com.google.javascript.rhino.IR;
import com.google.javascript.rhino.Node;
import com.google.javascript.rhino.SourcePosition;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.nio.charset.Charset;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;
import javax.annotation.Nullable;
/**
* Compiler options
*/
public class CompilerOptions implements Serializable {
// The number of characters after which we insert a line break in the code
static final int DEFAULT_LINE_LENGTH_THRESHOLD = 500;
static final char[] POLYMER_PROPERTY_RESERVED_FIRST_CHARS =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ$".toCharArray();
static final char[] POLYMER_PROPERTY_RESERVED_NON_FIRST_CHARS = "_$".toCharArray();
static final char[] ANGULAR_PROPERTY_RESERVED_FIRST_CHARS = {'$'};
public boolean shouldRunCrossChunkCodeMotion() {
return crossChunkCodeMotion;
}
public boolean shouldRunCrossChunkMethodMotion() {
return crossChunkMethodMotion;
}
/**
* A common enum for compiler passes that can run either globally or locally.
*/
public enum Reach {
ALL,
LOCAL_ONLY,
NONE;
public boolean isOn() {
return this != NONE;
}
public boolean includesGlobals() {
return this == ALL;
}
}
public enum PropertyCollapseLevel {
ALL,
NONE,
MODULE_EXPORT
}
// TODO(nicksantos): All public properties of this class should be made
// package-private, and have a public setter.
/**
* Should the compiled output start with "'use strict';"?
*/
private Optional emitUseStrict = Optional.absent();
/**
* The JavaScript language version accepted.
*/
private LanguageMode languageIn;
/**
* The JavaScript features that are allowed to be in the output.
*/
private Optional outputFeatureSet = Optional.absent();
private Optional languageOutIsDefaultStrict = Optional.absent();
/**
* Skips passes (logging a warning) whose PassFactory feature set doesn't include some features
* currently in the AST.
*/
private boolean skipUnsupportedPasses = false;
/**
* The builtin set of externs to be used
*/
private Environment environment;
/**
* Represents browser feature set year to use for compilation. It tells the JSCompiler to output
* code that works on the releases of major browsers that were current as of January 1 of the
* given year, without including transpilation or other workarounds for browsers older than that
*/
private class BrowserFeaturesetYear implements Serializable {
private Integer year = 0;
public Integer getYear() {
return this.year;
}
public void setYear(Integer inputYear) {
this.year = inputYear;
this.setDependentValuesFromYear();
}
public void setDependentValuesFromYear() {
if (year != 0) {
if (year == 2020) {
CompilerOptions.this.setOutputFeatureSet(FeatureSet.BROWSER_2020);
} else if (year == 2019) {
CompilerOptions.this.setLanguageOut(LanguageMode.ECMASCRIPT_2017);
} else if (year == 2012) {
CompilerOptions.this.setLanguageOut(LanguageMode.ECMASCRIPT5_STRICT);
}
}
}
}
/** Represents browserFeaturesetYear to use for compilation */
private final BrowserFeaturesetYear browserFeaturesetYear;
public Integer getBrowserFeaturesetYear() {
return this.browserFeaturesetYear.getYear();
}
/**
* Validates whether browser featureset year option is legal
*
* @param inputYear Integer value passed as input
*/
public void validateBrowserFeaturesetYearOption(Integer inputYear) {
checkState(
inputYear == 2020 || inputYear == 2019 || inputYear == 2012,
SimpleFormat.format(
"Illegal browser_featureset_year=%d. We support values 2012, 2019, and 2020 only",
inputYear));
}
public void setBrowserFeaturesetYear(Integer year) {
validateBrowserFeaturesetYearOption(year);
this.browserFeaturesetYear.setYear(year);
}
/**
* Instrument code for the purpose of collecting coverage data - restrict to coverage pass only,
* and skip all other passes.
*/
private boolean instrumentForCoverageOnly = false;
public void setInstrumentForCoverageOnly(boolean instrumentForCoverageOnly) {
this.instrumentForCoverageOnly = instrumentForCoverageOnly;
}
public boolean getInstrumentForCoverageOnly() {
return instrumentForCoverageOnly;
}
@Nullable private Path typedAstOutputFile = null;
/** Sets file to output in-progress TypedAST format to. DO NOT USE! */
void setTypedAstOutputFile(@Nullable Path file) {
this.typedAstOutputFile = file;
}
@Nullable
Path getTypedAstOutputFile() {
return this.typedAstOutputFile;
}
@Deprecated
public void setSkipTranspilationAndCrash(boolean value) {}
/**
* Sets the input sourcemap files, indexed by the JS files they refer to.
*
* @param inputSourceMaps the collection of input sourcemap files
*/
public void setInputSourceMaps(final ImmutableMap inputSourceMaps) {
this.inputSourceMaps = inputSourceMaps;
}
/**
* Whether to infer consts. This should not be configurable by
* external clients. This is a transitional flag for a new type
* of const analysis.
*
* TODO(nicksantos): Remove this option.
*/
boolean inferConsts = true;
// TODO(tbreisacher): Remove this method after ctemplate issues are solved.
public void setInferConst(boolean value) {
inferConsts = value;
}
/**
* Whether the compiler should assume that a function's "this" value
* never needs coercion (for example in non-strict "null" or "undefined" will
* be coerced to the global "this" and primitives to objects).
*/
private boolean assumeStrictThis;
private boolean allowHotswapReplaceScript = false;
private boolean preserveDetailedSourceInfo = false;
private boolean continueAfterErrors = false;
public enum IncrementalCheckMode {
/** Normal mode */
OFF,
/**
* The compiler should generate an output file that represents the type-only interface
* of the code being compiled. This is useful for incremental type checking.
*/
GENERATE_IJS,
/**
* The compiler should run the same checks as used during type-only interface generation,
* but run them after typechecking to give better error messages. This only makes sense in
* --checks_only mode.
*/
RUN_IJS_CHECKS_LATE,
}
private IncrementalCheckMode incrementalCheckMode = IncrementalCheckMode.OFF;
public void setIncrementalChecks(IncrementalCheckMode value) {
incrementalCheckMode = value;
switch (value) {
case OFF:
case RUN_IJS_CHECKS_LATE:
break;
case GENERATE_IJS:
setPreserveTypeAnnotations(true);
setOutputJs(OutputJs.NORMAL);
break;
}
}
public boolean shouldGenerateTypedExterns() {
return incrementalCheckMode == IncrementalCheckMode.GENERATE_IJS;
}
public boolean shouldRunTypeSummaryChecksLate() {
return incrementalCheckMode == IncrementalCheckMode.RUN_IJS_CHECKS_LATE;
}
private Config.JsDocParsing parseJsDocDocumentation = Config.JsDocParsing.TYPES_ONLY;
private boolean printExterns;
void setPrintExterns(boolean printExterns) {
this.printExterns = printExterns;
}
boolean shouldPrintExterns() {
return this.printExterns || incrementalCheckMode == IncrementalCheckMode.GENERATE_IJS;
}
/**
* Even if checkTypes is disabled, clients such as IDEs might want to still infer types.
*/
boolean inferTypes;
/**
* Configures the compiler to skip as many passes as possible.
* If transpilation is requested, it will be run, but all others passes will be skipped.
*/
boolean skipNonTranspilationPasses;
/**
* Configures the compiler to run expensive validity checks after
* every pass. Only intended for internal development.
*/
DevMode devMode;
/**
* Configures the compiler to log a hash code of the AST after
* every pass. Only intended for internal development.
*/
private boolean checkDeterminism;
// --------------------------------
// Input Options
// --------------------------------
private DependencyOptions dependencyOptions = DependencyOptions.none();
/** Returns localized replacement for MSG_* variables */
public MessageBundle messageBundle = null;
//--------------------------------
// Checks
//--------------------------------
/** Checks that all symbols are defined */
// TODO(tbreisacher): Remove this and deprecate the corresponding setter.
public boolean checkSymbols;
/** Checks for suspicious statements that have no effect */
public boolean checkSuspiciousCode;
/** Checks types on expressions */
public boolean checkTypes;
public CheckLevel checkGlobalNamesLevel;
/**
* Checks the integrity of references to qualified global names.
* (e.g. "a.b")
*/
public void setCheckGlobalNamesLevel(CheckLevel level) {
checkGlobalNamesLevel = level;
}
@Deprecated
public CheckLevel brokenClosureRequiresLevel;
/**
* Sets the check level for bad Closure require calls.
* Do not use; this should always be an error.
*/
@Deprecated
public void setBrokenClosureRequiresLevel(CheckLevel level) {
brokenClosureRequiresLevel = level;
}
public CheckLevel checkGlobalThisLevel;
/**
* Checks for certain uses of the {@code this} keyword that are considered
* unsafe because they are likely to reference the global {@code this}
* object unintentionally.
*
* If this is off, but collapseProperties is on, then the compiler will
* usually ignore you and run this check anyways.
*/
public void setCheckGlobalThisLevel(CheckLevel level) {
this.checkGlobalThisLevel = level;
}
public CheckLevel checkMissingGetCssNameLevel;
/**
* Checks that certain string literals only appear in strings used as
* goog.getCssName arguments.
*/
public void setCheckMissingGetCssNameLevel(CheckLevel level) {
this.checkMissingGetCssNameLevel = level;
}
/**
* Regex of string literals that may only appear in goog.getCssName arguments.
*/
public String checkMissingGetCssNameBlacklist;
/**
* A set of extra annotation names which are accepted and silently ignored
* when encountered in a source file. Defaults to null which has the same
* effect as specifying an empty set.
*/
Set extraAnnotationNames;
/**
* Used for projects that are not well maintained, but are still used.
* Does not allow promoting warnings to errors, and disables some potentially
* risky optimizations.
*/
boolean legacyCodeCompile = false;
public boolean getLegacyCodeCompile() {
return this.legacyCodeCompile;
}
public void setLegacyCodeCompile(boolean legacy) {
this.legacyCodeCompile = legacy;
}
// TODO(bradfordcsmith): Investigate how can we use multi-threads as default.
int numParallelThreads = 1;
/**
* Sets the level of parallelism for compilation passes that can exploit multi-threading.
*
* Some compiler passes may take advantage of multi-threading, for example, parsing inputs.
* This sets the level of parallelism. The compiler will not start more than this number of
* threads.
*
* @param parallelism up to this number of parallel threads may be created.
*/
public void setNumParallelThreads(int parallelism) {
numParallelThreads = parallelism;
}
//--------------------------------
// Optimizations
//--------------------------------
/** Prefer commas over semicolons when doing statement fusion */
boolean aggressiveFusion;
/** Folds constants (e.g. (2 + 3) to 5) */
public boolean foldConstants;
/** Remove assignments to values that can not be referenced */
public boolean deadAssignmentElimination;
/** Inlines constants (symbols that are all CAPS) */
public boolean inlineConstantVars;
/**
* For projects that want to avoid the creation of giant functions after
* inlining.
*/
int maxFunctionSizeAfterInlining;
static final int UNLIMITED_FUN_SIZE_AFTER_INLINING = -1;
/** More aggressive function inlining */
boolean assumeClosuresOnlyCaptureReferences;
/** Inlines properties */
private boolean inlineProperties;
/** Move code to a deeper chunk */
private boolean crossChunkCodeMotion;
/**
* Don't generate stub functions when moving methods deeper.
*
* Note, switching on this option may break existing code that depends on
* enumerating prototype methods for mixin behavior, such as goog.mixin or
* goog.object.extend, since the prototype assignments will be removed from
* the parent chunk and moved to a later chunk.
**/
boolean crossChunkCodeMotionNoStubMethods;
/**
* Whether when chunk B depends on chunk A and chunk B declares a symbol,
* this symbol can be seen in A after B has been loaded. This is often true,
* but may not be true when loading code using nested eval.
*/
boolean parentChunkCanSeeSymbolsDeclaredInChildren;
/** Merge two variables together as one. */
public boolean coalesceVariableNames;
/** Move methods to a deeper chunk */
private boolean crossChunkMethodMotion;
/** Inlines trivial getters */
boolean inlineGetters;
/** Inlines variables */
public boolean inlineVariables;
/** Inlines variables */
boolean inlineLocalVariables;
// TODO(user): This is temporary. Once flow sensitive inlining is stable
// Remove this.
public boolean flowSensitiveInlineVariables;
/** Removes code associated with unused global names */
public boolean smartNameRemoval;
/** Removes code associated with unused global names */
boolean extraSmartNameRemoval;
/** Removes code that will never execute */
public boolean removeDeadCode;
public enum ExtractPrototypeMemberDeclarationsMode {
OFF,
USE_GLOBAL_TEMP,
USE_IIFE
}
/** Extracts common prototype member declarations */
ExtractPrototypeMemberDeclarationsMode extractPrototypeMemberDeclarations;
/** Removes unused member prototypes */
public boolean removeUnusedPrototypeProperties;
/** Tells AnalyzePrototypeProperties it can remove externed props. */
public boolean removeUnusedPrototypePropertiesInExterns;
/** Removes unused member properties */
public boolean removeUnusedClassProperties;
/** Removes unused constructor properties */
boolean removeUnusedConstructorProperties;
/** Removes unused variables */
public boolean removeUnusedVars;
/** Removes unused variables in local scope. */
public boolean removeUnusedLocalVars;
/** Collapses multiple variable declarations into one */
public boolean collapseVariableDeclarations;
/**
* Collapses anonymous function declarations into named function
* declarations
*/
public boolean collapseAnonymousFunctions;
/**
* If set to a non-empty set, those strings literals will be aliased to a
* single global instance per string, to avoid creating more objects than
* necessary.
*/
public Set aliasableStrings;
/**
* A blacklist in the form of a regular expression to block strings that
* contains certain words from being aliased.
* If the value is the empty string, no words are blacklisted.
*/
public String aliasStringsBlacklist;
/**
* Aliases all string literals to global instances, to avoid creating more
* objects than necessary (if true, overrides any set of strings passed in
* to aliasableStrings)
*/
public boolean aliasAllStrings;
/** Print string usage as part of the compilation log. */
boolean outputJsStringUsage;
/** Converts quoted property accesses to dot syntax (a['b'] → a.b) */
public boolean convertToDottedProperties;
/** Reduces the size of common function expressions. */
public boolean rewriteFunctionExpressions;
/**
* Remove unused parameters from call sites.
*/
public boolean optimizeCalls;
/**
* Provide formal names for elements of arguments array.
*/
public boolean optimizeArgumentsArray;
/** Use type information to enable additional optimization opportunities. */
boolean useTypesForLocalOptimization;
boolean useSizeHeuristicToStopOptimizationLoop = true;
/**
* Do up to this many iterations of the optimization loop.
* Setting this field to some small number, say 3 or 4, allows a large project to build faster,
* but sacrifice some code size.
*/
int optimizationLoopMaxIterations;
//--------------------------------
// Renaming
//--------------------------------
/** Controls which variables get renamed. */
public VariableRenamingPolicy variableRenaming;
/** Controls which properties get renamed. */
PropertyRenamingPolicy propertyRenaming;
/** Controls label renaming. */
public boolean labelRenaming;
/** Reserve property names on the global this object. */
public boolean reserveRawExports;
/** Should shadow variable names in outer scope. */
boolean shadowVariables;
/**
* Use a renaming heuristic with better stability across source
* changes. With this option each symbol is more likely to receive
* the same name between builds. The cost may be a slight increase
* in code size.
*/
boolean preferStableNames;
/**
* Generate pseudo names for variables and properties for debugging purposes.
*/
public boolean generatePseudoNames;
/** Specifies a prefix for all globals */
public String renamePrefix;
/**
* Specifies the name of an object that will be used to store all non-extern
* globals.
*/
public String renamePrefixNamespace;
/**
* Used by tests of the RescopeGlobalSymbols pass to avoid having declare 2
* chunks in simple cases.
*/
boolean renamePrefixNamespaceAssumeCrossChunkNames = false;
void setRenamePrefixNamespaceAssumeCrossChunkNames(boolean assume) {
renamePrefixNamespaceAssumeCrossChunkNames = assume;
}
private PropertyCollapseLevel collapsePropertiesLevel;
/**
* Flattens multi-level property names (e.g. a$b = x)
*
* @deprecated use getPropertyCollapseLevel
*/
@Deprecated
public boolean shouldCollapseProperties() {
return collapsePropertiesLevel != PropertyCollapseLevel.NONE;
}
public PropertyCollapseLevel getPropertyCollapseLevel() {
return collapsePropertiesLevel;
}
/** Split object literals into individual variables when possible. */
boolean collapseObjectLiterals;
public void setCollapseObjectLiterals(boolean enabled) {
collapseObjectLiterals = enabled;
}
public boolean getCollapseObjectLiterals() {
return collapseObjectLiterals;
}
/**
* Devirtualize prototype method by rewriting them to be static calls that take the this pointer
* as their first argument
*/
public boolean devirtualizeMethods;
/**
* Use @nosideeffects annotations, function bodies and name graph
* to determine if calls have side effects. Requires --check_types.
*/
public boolean computeFunctionSideEffects;
/**
* Rename private properties to disambiguate between unrelated fields based on
* the coding convention.
*/
boolean disambiguatePrivateProperties;
/**
* Rename properties to disambiguate between unrelated fields based on
* type information.
*/
private boolean disambiguateProperties;
/**
* Use the graph based disambiguator.
*
* This is a transitional option while the graph based disambiguator becomes the default. This
* option has no effect if disambiguation is disabled.
*/
private boolean useGraphBasedDisambiguator = false;
/** Rename unrelated properties to the same name to reduce code size. */
private boolean ambiguateProperties;
/** Input sourcemap files, indexed by the JS files they refer to */
ImmutableMap inputSourceMaps;
/** Give anonymous functions names for easier debugging */
public AnonymousFunctionNamingPolicy anonymousFunctionNaming;
/** Input anonymous function renaming map. */
VariableMap inputAnonymousFunctionNamingMap;
/**
* Input variable renaming map.
* During renaming, the compiler uses this map and the inputPropertyMap to
* try to preserve renaming mappings from a previous compilation.
* The application is delta encoding: keeping the diff between consecutive
* versions of one's code small.
* The compiler does NOT guarantee to respect these maps; projects should not
* use these maps to prevent renaming or to select particular names.
* Point questioners to this post:
* http://closuretools.blogspot.com/2011/01/property-by-any-other-name-part-3.html
*/
VariableMap inputVariableMap;
/** Input property renaming map. */
VariableMap inputPropertyMap;
/** Whether to export test functions. */
public boolean exportTestFunctions;
/** Whether to declare globals declared in externs as properties on window */
boolean declaredGlobalExternsOnWindow;
/** Shared name generator */
NameGenerator nameGenerator;
public void setNameGenerator(NameGenerator nameGenerator) {
this.nameGenerator = nameGenerator;
}
// --------------------------------
// Special-purpose alterations
// --------------------------------
/**
* Replace UI strings with chrome.i18n.getMessage calls.
* Used by Chrome extensions/apps.
*/
boolean replaceMessagesWithChromeI18n;
String tcProjectId;
public void setReplaceMessagesWithChromeI18n(
boolean replaceMessagesWithChromeI18n,
String tcProjectId) {
if (replaceMessagesWithChromeI18n
&& messageBundle != null
&& !(messageBundle instanceof EmptyMessageBundle)) {
throw new RuntimeException("When replacing messages with"
+ " chrome.i18n.getMessage, a message bundle should not be specified.");
}
this.replaceMessagesWithChromeI18n = replaceMessagesWithChromeI18n;
this.tcProjectId = tcProjectId;
}
/** Inserts run-time type assertions for debugging. */
boolean runtimeTypeCheck;
/**
* A JS function to be used for logging run-time type assertion
* failures. It will be passed the warning as a string and the
* faulty expression as arguments.
*/
String runtimeTypeCheckLogFunction;
/** A CodingConvention to use during the compile. */
private CodingConvention codingConvention;
@Nullable
public String syntheticBlockStartMarker;
@Nullable
public String syntheticBlockEndMarker;
/** Compiling locale */
public String locale;
/** Sets the special "COMPILED" value to true */
public boolean markAsCompiled;
/** Processes goog.provide() and goog.require() calls */
public boolean closurePass;
/** Do not strip goog.provide()/goog.require() calls from the code. */
private boolean preserveClosurePrimitives;
/** Processes AngularJS-specific annotations */
boolean angularPass;
/** If non-null, processes Polymer code */
@Nullable
Integer polymerVersion;
/** How to handle exports/externs for Polymer properties and methods. */
PolymerExportPolicy polymerExportPolicy;
/** Processes cr.* functions */
private boolean chromePass;
/** Processes the output of the Dart Dev Compiler */
boolean dartPass;
/** Processes the output of J2CL */
J2clPassMode j2clPassMode;
boolean j2clMinifierEnabled = true;
@Nullable String j2clMinifierPruningManifest = null;
/** Remove goog.abstractMethod assignments and @abstract methods. */
boolean removeAbstractMethods;
/** Remove goog.asserts calls. */
boolean removeClosureAsserts;
/** Remove J2CL assert calls. */
boolean removeJ2clAsserts = true;
/** Gather CSS names (requires closurePass) */
public boolean gatherCssNames;
/** Names of types to strip */
public Set stripTypes;
/** Name suffixes that determine which variables and properties to strip */
public Set stripNameSuffixes;
/** Name prefixes that determine which variables and properties to strip */
public Set stripNamePrefixes;
/** Qualified type name prefixes that determine which types to strip */
public Set stripTypePrefixes;
/** Custom passes */
protected transient
Multimap customPasses;
/** Replacements for @defines. Will be Boolean, Numbers, or Strings */
private Map defineReplacements;
/** What kind of processing to do for goog.tweak functions. */
private TweakProcessing tweakProcessing;
/** Replacements for tweaks. Will be Boolean, Numbers, or Strings */
private Map tweakReplacements;
/** Move top-level function declarations to the top */
public boolean moveFunctionDeclarations;
boolean checksOnly;
/** What type of JS file should be output by this compilation */
public static enum OutputJs {
// Don't output anything.
NONE,
// Output a "sentinel" file containing just a comment.
SENTINEL,
// Output the compiled JS.
NORMAL,
}
OutputJs outputJs;
public boolean generateExports;
boolean exportLocalPropertyDefinitions;
/** Map used in the renaming of CSS class names. */
public CssRenamingMap cssRenamingMap;
/** Whitelist used in the renaming of CSS class names. */
Set cssRenamingWhitelist;
/** Replace id generators */
boolean replaceIdGenerators = true; // true by default for legacy reasons.
/** Id generators to replace. */
ImmutableMap idGenerators;
/** Hash function to use for xid generation. */
Xid.HashFunction xidHashFunction;
/**
* A previous map of ids (serialized to a string by a previous compile).
* This will be used as a hint during the ReplaceIdGenerators pass, which
* will attempt to reuse the same ids.
*/
String idGeneratorsMapSerialized;
/** Configuration strings */
List replaceStringsFunctionDescriptions;
String replaceStringsPlaceholderToken;
// A list of strings that should not be used as replacements
Set replaceStringsReservedStrings;
// A previous map of replacements to strings.
VariableMap replaceStringsInputMap;
/** List of properties that we report invalidation errors for. */
Map propertyInvalidationErrors;
/** Transform AMD to CommonJS modules. */
boolean transformAMDToCJSModules = false;
/** Rewrite CommonJS modules so that they can be concatenated together. */
boolean processCommonJSModules = false;
/** CommonJS module prefix. */
List moduleRoots = ImmutableList.of(ModuleLoader.DEFAULT_FILENAME_PREFIX);
/** Inject polyfills */
boolean rewritePolyfills = false;
/** Isolates injected polyfills from the global scope. */
private boolean isolatePolyfills = false;
/** Runtime libraries to always inject. */
List forceLibraryInjection = ImmutableList.of();
/** Runtime libraries to never inject. */
boolean preventLibraryInjection = false;
boolean assumeForwardDeclaredForMissingTypes = false;
/**
* If {@code true}, considers all missing types to be forward declared (useful for partial
* compilation).
*/
public void setAssumeForwardDeclaredForMissingTypes(
boolean assumeForwardDeclaredForMissingTypes) {
this.assumeForwardDeclaredForMissingTypes = assumeForwardDeclaredForMissingTypes;
}
//--------------------------------
// Output options
//--------------------------------
/** Do not strip closure-style type annotations from code. */
public boolean preserveTypeAnnotations;
/** Output in pretty indented format */
private boolean prettyPrint;
/** Line break the output a bit more aggressively */
public boolean lineBreak;
/** Prefer line breaks at end of file */
public boolean preferLineBreakAtEndOfFile;
/** Prints a separator comment before each JS script */
public boolean printInputDelimiter;
/** The string to use as the separator for printInputDelimiter */
public String inputDelimiter = "// Input %num%";
/**
* A directory into which human readable debug log files can be written.
*
* {@code null} indicates that no such files should be written.
*/
@Nullable private Path debugLogDirectory;
/** Whether to write keyword properties as foo['class'] instead of foo.class; needed for IE8. */
private boolean quoteKeywordProperties;
boolean preferSingleQuotes;
/**
* Normally, when there are an equal number of single and double quotes
* in a string, the compiler will use double quotes. Set this to true
* to prefer single quotes.
*/
public void setPreferSingleQuotes(boolean enabled) {
this.preferSingleQuotes = enabled;
}
boolean trustedStrings;
/**
* Some people want to put arbitrary user input into strings, which are then
* run through the compiler. These scripts are then put into HTML.
* By default, we assume strings are untrusted. If the compiler is run
* from the command-line, we assume that strings are trusted.
*/
public void setTrustedStrings(boolean yes) {
trustedStrings = yes;
}
// Should only be used when debugging compiler bugs.
boolean printSourceAfterEachPass;
// Used to narrow down the printed source when overall input size is large. If these are both
// empty the entire source is printed.
List filesToPrintAfterEachPassRegexList = ImmutableList.of();
List chunksToPrintAfterEachPassRegexList = ImmutableList.of();
public void setPrintSourceAfterEachPass(boolean printSource) {
this.printSourceAfterEachPass = printSource;
}
public void setFilesToPrintAfterEachPassRegexList(List filePathRegexList) {
this.filesToPrintAfterEachPassRegexList = filePathRegexList;
}
public void setChunksToPrintAfterEachPassRegexList(List chunkPathRegexList) {
this.chunksToPrintAfterEachPassRegexList = chunkPathRegexList;
}
@Deprecated
public void setModulesToPrintAfterEachPassRegexList(List chunkPathRegexList) {
this.chunksToPrintAfterEachPassRegexList = chunkPathRegexList;
}
private TracerMode tracer;
public TracerMode getTracerMode() {
return tracer;
}
// NOTE: Timing information will not be printed if compiler.disableThreads() is called!
public void setTracerMode(TracerMode mode) {
this.tracer = mode;
}
private Path tracerOutput;
Path getTracerOutput() {
return tracerOutput;
}
public void setTracerOutput(Path out) {
tracerOutput = out;
}
private boolean colorizeErrorOutput;
public ErrorFormat errorFormat;
private ComposeWarningsGuard warningsGuard = new ComposeWarningsGuard();
int summaryDetailLevel = 1;
int lineLengthThreshold = DEFAULT_LINE_LENGTH_THRESHOLD;
/**
* Whether to use the original names of nodes in the code output. This option is only really
* useful when using the compiler to print code meant to check in to source.
*/
boolean useOriginalNamesInOutput = false;
//--------------------------------
// Special Output Options
//--------------------------------
/**
* Whether the exports should be made available via {@link Result} after
* compilation. This is implicitly true if {@link #externExportsPath} is set.
*/
private boolean externExports;
/** The output path for the created externs file. */
String externExportsPath;
private final List extraReportGenerators =
new ArrayList<>();
List getExtraReportGenerators() {
return extraReportGenerators;
}
void addReportGenerator(SortingErrorManager.ErrorReportGenerator generator) {
extraReportGenerators.add(generator);
}
//--------------------------------
// Debugging Options
//--------------------------------
/** The output path for the source map. */
public String sourceMapOutputPath;
/** The detail level for the generated source map. */
public SourceMap.DetailLevel sourceMapDetailLevel =
SourceMap.DetailLevel.ALL;
/** The source map file format */
public SourceMap.Format sourceMapFormat =
SourceMap.Format.DEFAULT;
/**
* Whether to parse inline source maps.
*/
boolean parseInlineSourceMaps = true;
/**
* Whether to apply input source maps to the output, i.e. map back to original inputs from
* input files that have source maps applied to them.
*/
boolean applyInputSourceMaps = false;
/**
* Whether to resolve source mapping annotations. Cannot do this in an appengine or js environment
* since we don't have access to the filesystem.
*/
boolean resolveSourceMapAnnotations = true;
public List sourceMapLocationMappings = ImmutableList.of();
/**
* Whether to include full file contents in the source map.
*/
boolean sourceMapIncludeSourcesContent = false;
/**
* Charset to use when generating code. If null, then output ASCII.
*/
transient Charset outputCharset;
/**
* Transitional option.
*/
boolean enforceAccessControlCodingConventions;
/**
* When set, assume that apparently side-effect free code is meaningful.
*/
private boolean protectHiddenSideEffects;
/**
* When enabled, assume that apparently side-effect free code is meaningful.
*/
public void setProtectHiddenSideEffects(boolean enable) {
this.protectHiddenSideEffects = enable;
}
/**
* Whether or not the compiler should wrap apparently side-effect free code
* to prevent it from being removed
*/
public boolean shouldProtectHiddenSideEffects() {
return protectHiddenSideEffects && !checksOnly && !allowHotswapReplaceScript;
}
/**
* Ignore the possibility that getter invocations (gets) can have side-effects and that the
* results of gets can be side-effected by local state mutations.
*
* When {@code false}, it doesn't necessarily mean that all gets are considered side-effectful
* or side-effected. Gets that can be proven to be pure may still be considered as such.
*
*
Recall that object-spread is capable of triggering getters. Since the syntax doesn't
* explicitly specifiy a property, it is essentailly impossible to prove it has no side-effects
* without this assumption.
*/
private boolean assumeGettersArePure = true;
public void setAssumeGettersArePure(boolean x) {
this.assumeGettersArePure = x;
}
public boolean getAssumeGettersArePure() {
return assumeGettersArePure;
}
/**
* Consider that static (class-side) inheritance may be being used and that static methods may be
* referenced via `this` or through subclasses.
*
*
When {@code false}, the compiler is free to make unsafe (breaking) optimizations to code
* that depends on static inheritance. These optimizations represent a substantial code-size
* reduction for older projects and therefore cannot be unilaterally disabled. {@code false} was
* the long-standing implicit assumption before static inheritance came about in ES6.
*
*
Example of what may break if this flag is {@code false}:
*
*
{@code
* class Parent {
* static method() { }
* }
*
* class Child extends Parent { }
*
* Child.method(); // `method` will not be defined.
* }
*/
private boolean assumeStaticInheritanceRequired = false;
public void setAssumeStaticInheritanceRequired(boolean x) {
this.assumeStaticInheritanceRequired = x;
}
public boolean getAssumeStaticInheritanceRequired() {
return assumeStaticInheritanceRequired;
}
/**
* Data holder Alias Transformation information accumulated during a compile.
*/
private transient AliasTransformationHandler aliasHandler;
/**
* Handler for compiler warnings and errors.
*/
transient ErrorHandler errorHandler;
/**
* Instrument code for the purpose of collecting coverage data.
*/
public boolean instrumentForCoverage;
/** Instrument branch coverage data - valid only if instrumentForCoverage is True */
public boolean instrumentBranchCoverage;
private static final ImmutableList GLOBAL_CONFORMANCE_CONFIGS =
ImmutableList.of(ResourceLoader.loadGlobalConformance(CompilerOptions.class));
/**
* List of conformance configs to use in CheckConformance.
*
* The first entry of this list is always the Global ConformanceConfig
*/
private ImmutableList conformanceConfigs = GLOBAL_CONFORMANCE_CONFIGS;
/**
* Remove the first match of this regex from any paths when checking conformance whitelists.
*
* You can use this to make absolute paths relative to the root of your source tree. This is
* useful to work around CI and build systems that use absolute paths.
*/
private Optional conformanceRemoveRegexFromPath =
Optional.of(Pattern.compile("^((.*/)?google3/)?((^/)?(blaze|bazel)-out/[^/]+/bin/)?"));
public void setConformanceRemoveRegexFromPath(Optional pattern) {
conformanceRemoveRegexFromPath = pattern;
}
public Optional getConformanceRemoveRegexFromPath() {
return conformanceRemoveRegexFromPath;
}
/** For use in {@link CompilationLevel#WHITESPACE_ONLY} mode, when using goog.module. */
boolean wrapGoogModulesForWhitespaceOnly = true;
public void setWrapGoogModulesForWhitespaceOnly(boolean enable) {
this.wrapGoogModulesForWhitespaceOnly = enable;
}
/**
* Print all configuration options to stderr after the compiler is initialized.
*/
boolean printConfig = false;
/**
* Are the input files written for strict mode?
*/
private Optional isStrictModeInput = Optional.absent();
// Store four unique states:
// - run module rewriting before typechecking
// - run module rewriting after typechecking
// - don't run module rewriting, but if it's reenabled, run it before typechecking
// - don't run module rewriting, but if it's reenabled, run it after typechecking
private boolean rewriteModulesBeforeTypechecking = true;
private boolean enableModuleRewriting = true;
/** Whether to enable the bad module rewriting before typechecking that we want to get rid of */
public void setBadRewriteModulesBeforeTypecheckingThatWeWantToGetRidOf(boolean b) {
this.rewriteModulesBeforeTypechecking = b;
}
boolean shouldRewriteModulesBeforeTypechecking() {
return this.enableModuleRewriting && this.rewriteModulesBeforeTypechecking;
}
/**
* Experimental option to disable all Closure and ES module rewriting
*
* Use at your own risk - disabling module rewriting is not fully tested yet.
*/
public void setEnableModuleRewriting(boolean enable) {
this.enableModuleRewriting = enable;
}
boolean shouldRewriteModulesAfterTypechecking() {
return this.enableModuleRewriting && !this.rewriteModulesBeforeTypechecking;
}
/** Which algorithm to use for locating ES6 and CommonJS modules */
ResolutionMode moduleResolutionMode;
/**
* Map of prefix replacements for use when moduleResolutionMode is {@link
* ResolutionMode#BROWSER_WITH_TRANSFORMED_PREFIXES}.
*/
private ImmutableMap browserResolverPrefixReplacements;
private ModuleLoader.PathEscaper pathEscaper;
/** Which entries to look for in package.json files when processing modules */
List packageJsonEntryNames;
/**
* Should the compiler print its configuration options to stderr when they are initialized?
*
* Default {@code false}.
*/
public void setPrintConfig(boolean printConfig) {
this.printConfig = printConfig;
}
/**
* Initializes compiler options. All options are disabled by default.
*
* Command-line frontends to the compiler should set these properties
* like a builder.
*/
public CompilerOptions() {
// Accepted language
languageIn = LanguageMode.STABLE_IN;
browserFeaturesetYear = new BrowserFeaturesetYear();
// Which environment to use
environment = Environment.BROWSER;
browserResolverPrefixReplacements = ImmutableMap.of();
// Modules
moduleResolutionMode = ModuleLoader.ResolutionMode.BROWSER;
packageJsonEntryNames = ImmutableList.of("browser", "module", "main");
pathEscaper = ModuleLoader.PathEscaper.ESCAPE;
rewriteModulesBeforeTypechecking = true;
enableModuleRewriting = true;
// Checks
skipNonTranspilationPasses = false;
devMode = DevMode.OFF;
checkDeterminism = false;
checkSymbols = false;
checkSuspiciousCode = false;
checkTypes = false;
checkGlobalNamesLevel = CheckLevel.OFF;
brokenClosureRequiresLevel = CheckLevel.ERROR;
checkGlobalThisLevel = CheckLevel.OFF;
checkMissingGetCssNameLevel = CheckLevel.OFF;
checkMissingGetCssNameBlacklist = null;
computeFunctionSideEffects = false;
extraAnnotationNames = null;
// Optimizations
foldConstants = false;
coalesceVariableNames = false;
deadAssignmentElimination = false;
inlineConstantVars = false;
inlineFunctionsLevel = Reach.NONE;
maxFunctionSizeAfterInlining = UNLIMITED_FUN_SIZE_AFTER_INLINING;
assumeStrictThis = false;
assumeClosuresOnlyCaptureReferences = false;
inlineProperties = false;
crossChunkCodeMotion = false;
parentChunkCanSeeSymbolsDeclaredInChildren = false;
crossChunkMethodMotion = false;
inlineGetters = false;
inlineVariables = false;
inlineLocalVariables = false;
smartNameRemoval = false;
extraSmartNameRemoval = false;
removeDeadCode = false;
extractPrototypeMemberDeclarations =
ExtractPrototypeMemberDeclarationsMode.OFF;
removeUnusedPrototypeProperties = false;
removeUnusedPrototypePropertiesInExterns = false;
removeUnusedClassProperties = false;
removeUnusedVars = false;
removeUnusedLocalVars = false;
collapseVariableDeclarations = false;
collapseAnonymousFunctions = false;
aliasableStrings = ImmutableSet.of();
aliasStringsBlacklist = "";
aliasAllStrings = false;
outputJsStringUsage = false;
convertToDottedProperties = false;
rewriteFunctionExpressions = false;
// Renaming
variableRenaming = VariableRenamingPolicy.OFF;
propertyRenaming = PropertyRenamingPolicy.OFF;
labelRenaming = false;
generatePseudoNames = false;
shadowVariables = false;
preferStableNames = false;
renamePrefix = null;
collapsePropertiesLevel = PropertyCollapseLevel.NONE;
collapseObjectLiterals = false;
devirtualizeMethods = false;
disambiguateProperties = false;
ambiguateProperties = false;
anonymousFunctionNaming = AnonymousFunctionNamingPolicy.OFF;
exportTestFunctions = false;
declaredGlobalExternsOnWindow = true;
nameGenerator = new DefaultNameGenerator();
// Alterations
runtimeTypeCheck = false;
runtimeTypeCheckLogFunction = null;
syntheticBlockStartMarker = null;
syntheticBlockEndMarker = null;
locale = null;
markAsCompiled = false;
closurePass = false;
preserveClosurePrimitives = false;
angularPass = false;
polymerVersion = null;
polymerExportPolicy = PolymerExportPolicy.LEGACY;
dartPass = false;
j2clPassMode = J2clPassMode.AUTO;
j2clMinifierEnabled = true;
removeAbstractMethods = false;
removeClosureAsserts = false;
stripTypes = ImmutableSet.of();
stripNameSuffixes = ImmutableSet.of();
stripNamePrefixes = ImmutableSet.of();
stripTypePrefixes = ImmutableSet.of();
customPasses = null;
defineReplacements = new HashMap<>();
tweakProcessing = TweakProcessing.OFF;
tweakReplacements = new HashMap<>();
moveFunctionDeclarations = false;
checksOnly = false;
outputJs = OutputJs.NORMAL;
generateExports = false;
exportLocalPropertyDefinitions = false;
cssRenamingMap = null;
cssRenamingWhitelist = null;
idGenerators = ImmutableMap.of();
replaceStringsFunctionDescriptions = ImmutableList.of();
replaceStringsPlaceholderToken = "";
replaceStringsReservedStrings = ImmutableSet.of();
propertyInvalidationErrors = new HashMap<>();
inputSourceMaps = ImmutableMap.of();
// Instrumentation
instrumentForCoverage = false; // instrument lines
instrumentBranchCoverage = false; // instrument branches
// Output
preserveTypeAnnotations = false;
printInputDelimiter = false;
prettyPrint = false;
lineBreak = false;
preferLineBreakAtEndOfFile = false;
tracer = TracerMode.OFF;
colorizeErrorOutput = false;
errorFormat = ErrorFormat.SINGLELINE;
externExports = false;
// Debugging
aliasHandler = NULL_ALIAS_TRANSFORMATION_HANDLER;
errorHandler = null;
printSourceAfterEachPass = false;
}
/**
* @return Whether to attempt to remove unused class properties
*/
public boolean isRemoveUnusedClassProperties() {
return removeUnusedClassProperties;
}
/**
* @param removeUnusedClassProperties Whether to attempt to remove
* unused class properties
*/
public void setRemoveUnusedClassProperties(boolean removeUnusedClassProperties) {
this.removeUnusedClassProperties = removeUnusedClassProperties;
}
/**
* Returns the map of define replacements.
*/
public Map getDefineReplacements() {
return getReplacementsHelper(defineReplacements);
}
/**
* Returns the map of tweak replacements.
*/
public Map getTweakReplacements() {
return getReplacementsHelper(tweakReplacements);
}
/** Creates a map of String->Node from a map of String->Number/String/Boolean. */
private static ImmutableMap getReplacementsHelper(Map source) {
ImmutableMap.Builder map = ImmutableMap.builder();
for (Map.Entry entry : source.entrySet()) {
String name = entry.getKey();
Object value = entry.getValue();
if (value instanceof Boolean) {
map.put(name, NodeUtil.booleanNode(((Boolean) value).booleanValue()));
} else if (value instanceof Integer) {
map.put(name, IR.number(((Integer) value).intValue()));
} else if (value instanceof Double) {
map.put(name, IR.number(((Double) value).doubleValue()));
} else {
checkState(value instanceof String);
map.put(name, IR.string((String) value));
}
}
return map.build();
}
/**
* Sets the value of the {@code @define} variable in JS
* to a boolean literal.
*/
public void setDefineToBooleanLiteral(String defineName, boolean value) {
defineReplacements.put(defineName, value);
}
/**
* Sets the value of the {@code @define} variable in JS to a
* String literal.
*/
public void setDefineToStringLiteral(String defineName, String value) {
defineReplacements.put(defineName, value);
}
/**
* Sets the value of the {@code @define} variable in JS to a
* number literal.
*/
public void setDefineToNumberLiteral(String defineName, int value) {
defineReplacements.put(defineName, value);
}
/**
* Sets the value of the {@code @define} variable in JS to a
* number literal.
*/
public void setDefineToDoubleLiteral(String defineName, double value) {
defineReplacements.put(defineName, value);
}
/**
* Sets the value of the tweak in JS
* to a boolean literal.
*/
public void setTweakToBooleanLiteral(String tweakId, boolean value) {
tweakReplacements.put(tweakId, value);
}
/**
* Sets the value of the tweak in JS to a
* String literal.
*/
public void setTweakToStringLiteral(String tweakId, String value) {
tweakReplacements.put(tweakId, value);
}
/**
* Sets the value of the tweak in JS to a
* number literal.
*/
public void setTweakToNumberLiteral(String tweakId, int value) {
tweakReplacements.put(tweakId, value);
}
/**
* Sets the value of the tweak in JS to a
* number literal.
*/
public void setTweakToDoubleLiteral(String tweakId, double value) {
tweakReplacements.put(tweakId, value);
}
/**
* Skip all possible passes, to make the compiler as fast as possible.
*/
public void skipAllCompilerPasses() {
skipNonTranspilationPasses = true;
}
/**
* Whether the warnings guard in this Options object enables the given
* group of warnings.
*/
boolean enables(DiagnosticGroup type) {
return this.warningsGuard.enables(type);
}
/**
* Whether the warnings guard in this Options object disables the given
* group of warnings.
*/
boolean disables(DiagnosticGroup type) {
return this.warningsGuard.disables(type);
}
/**
* Configure the given type of warning to the given level.
*/
public void setWarningLevel(DiagnosticGroup type, CheckLevel level) {
addWarningsGuard(new DiagnosticGroupWarningsGuard(type, level));
}
WarningsGuard getWarningsGuard() {
return this.warningsGuard;
}
/**
* Reset the warnings guard.
*/
public void resetWarningsGuard() {
this.warningsGuard = new ComposeWarningsGuard();
}
/**
* The emergency fail safe removes all strict and ERROR-escalating
* warnings guards.
*/
void useEmergencyFailSafe() {
this.warningsGuard = this.warningsGuard.makeEmergencyFailSafeGuard();
}
void useNonStrictWarningsGuard() {
this.warningsGuard = this.warningsGuard.makeNonStrict();
}
/**
* Add a guard to the set of warnings guards.
*/
public void addWarningsGuard(WarningsGuard guard) {
this.warningsGuard.addGuard(guard);
}
/**
* Sets the variable and property renaming policies for the compiler,
* in a way that clears warnings about the renaming policy being
* uninitialized from flags.
*/
public void setRenamingPolicy(VariableRenamingPolicy newVariablePolicy,
PropertyRenamingPolicy newPropertyPolicy) {
this.variableRenaming = newVariablePolicy;
this.propertyRenaming = newPropertyPolicy;
}
/** Should shadow outer scope variable name during renaming. */
public void setShadowVariables(boolean shadow) {
this.shadowVariables = shadow;
}
/**
* @param replaceIdGenerators the replaceIdGenerators to set
*/
public void setReplaceIdGenerators(boolean replaceIdGenerators) {
this.replaceIdGenerators = replaceIdGenerators;
}
/**
* Sets the id generators to replace.
*/
public void setIdGenerators(Set idGenerators) {
RenamingMap gen = new UniqueRenamingToken();
ImmutableMap.Builder builder = ImmutableMap.builder();
for (String name : idGenerators) {
builder.put(name, gen);
}
this.idGenerators = builder.build();
}
/**
* Sets the id generators to replace.
*/
public void setIdGenerators(Map idGenerators) {
this.idGenerators = ImmutableMap.copyOf(idGenerators);
}
/**
* A previous map of ids (serialized to a string by a previous compile).
* This will be used as a hint during the ReplaceIdGenerators pass, which
* will attempt to reuse the same ids.
*/
public void setIdGeneratorsMap(String previousMappings) {
this.idGeneratorsMapSerialized = previousMappings;
}
/**
* Sets the hash function to use for Xid
*/
public void setXidHashFunction(Xid.HashFunction xidHashFunction) {
this.xidHashFunction = xidHashFunction;
}
private Reach inlineFunctionsLevel;
/** Use {@link #setInlineFunctions(Reach)} instead */
@Deprecated
public void setInlineFunctions(boolean inlineFunctions) {
this.setInlineFunctions(inlineFunctions ? Reach.ALL : Reach.NONE);
}
/**
* Set the function inlining policy for the compiler.
*/
public void setInlineFunctions(Reach reach) {
this.inlineFunctionsLevel = reach;
}
/**
* Get the function inlining policy for the compiler.
*/
public Reach getInlineFunctionsLevel() {
return this.inlineFunctionsLevel;
}
public void setMaxFunctionSizeAfterInlining(int funAstSize) {
checkArgument(funAstSize > 0);
this.maxFunctionSizeAfterInlining = funAstSize;
}
public void setInlineVariables(boolean inlineVariables) {
this.inlineVariables = inlineVariables;
}
/**
* Set the variable inlining policy for the compiler.
*/
public void setInlineVariables(Reach reach) {
switch (reach) {
case ALL:
this.inlineVariables = true;
this.inlineLocalVariables = true;
break;
case LOCAL_ONLY:
this.inlineVariables = false;
this.inlineLocalVariables = true;
break;
case NONE:
this.inlineVariables = false;
this.inlineLocalVariables = false;
break;
default:
throw new IllegalStateException("unexpected");
}
}
/**
* Set the function inlining policy for the compiler.
*/
public void setInlineProperties(boolean enable) {
inlineProperties = enable;
}
public boolean shouldInlineProperties() {
return inlineProperties;
}
/**
* Set the variable removal policy for the compiler.
*/
public void setRemoveUnusedVariables(Reach reach) {
switch (reach) {
case ALL:
this.removeUnusedVars = true;
this.removeUnusedLocalVars = true;
break;
case LOCAL_ONLY:
this.removeUnusedVars = false;
this.removeUnusedLocalVars = true;
break;
case NONE:
this.removeUnusedVars = false;
this.removeUnusedLocalVars = false;
break;
default:
throw new IllegalStateException("unexpected");
}
}
/**
* Sets the functions whose debug strings to replace.
*/
public void setReplaceStringsConfiguration(
String placeholderToken, List functionDescriptors) {
this.replaceStringsPlaceholderToken = placeholderToken;
this.replaceStringsFunctionDescriptions =
new ArrayList<>(functionDescriptors);
}
public void setRemoveAbstractMethods(boolean remove) {
this.removeAbstractMethods = remove;
}
public void setRemoveClosureAsserts(boolean remove) {
this.removeClosureAsserts = remove;
}
public void setRemoveJ2clAsserts(boolean remove) {
this.removeJ2clAsserts = remove;
}
public void setColorizeErrorOutput(boolean colorizeErrorOutput) {
this.colorizeErrorOutput = colorizeErrorOutput;
}
public boolean shouldColorizeErrorOutput() {
return colorizeErrorOutput;
}
/**
* Enable run-time type checking, which adds JS type assertions for debugging.
*
* @param logFunction A JS function to be used for logging run-time type
* assertion failures.
*/
public void enableRuntimeTypeCheck(String logFunction) {
this.runtimeTypeCheck = true;
this.runtimeTypeCheckLogFunction = logFunction;
}
public void disableRuntimeTypeCheck() {
this.runtimeTypeCheck = false;
}
public void setChecksOnly(boolean checksOnly) {
this.checksOnly = checksOnly;
}
public void setOutputJs(OutputJs outputJs) {
this.outputJs = outputJs;
}
public void setGenerateExports(boolean generateExports) {
this.generateExports = generateExports;
}
public void setExportLocalPropertyDefinitions(boolean export) {
this.exportLocalPropertyDefinitions = export;
}
public boolean shouldExportLocalPropertyDefinitions() {
return this.exportLocalPropertyDefinitions;
}
public void setAngularPass(boolean angularPass) {
this.angularPass = angularPass;
}
public void setPolymerVersion(Integer polymerVersion) {
checkArgument(polymerVersion == null || polymerVersion == 1 || polymerVersion == 2,
"Invalid Polymer version:", polymerVersion);
this.polymerVersion = polymerVersion;
}
public void setPolymerExportPolicy(PolymerExportPolicy polymerExportPolicy) {
this.polymerExportPolicy = polymerExportPolicy;
}
public void setChromePass(boolean chromePass) {
this.chromePass = chromePass;
}
public boolean isChromePassEnabled() {
return chromePass;
}
public void setDartPass(boolean dartPass) {
this.dartPass = dartPass;
}
public void setJ2clPass(J2clPassMode j2clPassMode) {
this.j2clPassMode = j2clPassMode;
}
public void setJ2clMinifierEnabled(boolean enabled) {
this.j2clMinifierEnabled = enabled;
}
public void setJ2clMinifierPruningManifest(String j2clMinifierPruningManifest) {
this.j2clMinifierPruningManifest = j2clMinifierPruningManifest;
}
public void setCodingConvention(CodingConvention codingConvention) {
this.codingConvention = codingConvention;
}
public CodingConvention getCodingConvention() {
return codingConvention;
}
/** Sets the dependency management options. */
public void setDependencyOptions(DependencyOptions dependencyOptions) {
this.dependencyOptions = dependencyOptions;
}
public DependencyOptions getDependencyOptions() {
return dependencyOptions;
}
/**
* Controls how detailed the compilation summary is. Values:
* 0 (never print summary), 1 (print summary only if there are
* errors or warnings), 2 (print summary if type checking is on,
* see --check_types), 3 (always print summary). The default level
* is 1
*/
public void setSummaryDetailLevel(int summaryDetailLevel) {
this.summaryDetailLevel = summaryDetailLevel;
}
public void setExtraAnnotationNames(Iterable extraAnnotationNames) {
this.extraAnnotationNames = ImmutableSet.copyOf(extraAnnotationNames);
}
public boolean isExternExportsEnabled() {
return externExports;
}
/**
* Sets the output charset.
*/
public void setOutputCharset(Charset charset) {
this.outputCharset = charset;
}
/**
* Gets the output charset.
*/
Charset getOutputCharset() {
return outputCharset;
}
/**
* Sets how goog.tweak calls are processed.
*/
public void setTweakProcessing(TweakProcessing tweakProcessing) {
this.tweakProcessing = tweakProcessing;
}
public TweakProcessing getTweakProcessing() {
return tweakProcessing;
}
/**
* Sets ECMAScript version to use.
*/
public void setLanguage(LanguageMode language) {
checkState(language != LanguageMode.NO_TRANSPILE);
this.setLanguageIn(language);
this.setLanguageOut(language);
}
/**
* Sets ECMAScript version to use for the input. If you are not
* transpiling from one version to another, use #setLanguage instead.
*/
public void setLanguageIn(LanguageMode languageIn) {
checkState(languageIn != LanguageMode.NO_TRANSPILE);
this.languageIn = languageIn == LanguageMode.STABLE ? LanguageMode.STABLE_IN : languageIn;
}
public LanguageMode getLanguageIn() {
return languageIn;
}
/**
* Sets ECMAScript version to use for the output.
*
* If you are not transpiling from one version to another, use #setLanguage instead.
*
*
If you you need something more fine grained (e.g. "ES2017 without modules") use
* #setOutputFeatureSet.
*/
public void setLanguageOut(LanguageMode languageOut) {
if (languageOut == LanguageMode.NO_TRANSPILE) {
languageOutIsDefaultStrict = Optional.absent();
outputFeatureSet = Optional.absent();
} else {
languageOut = languageOut == LanguageMode.STABLE ? LanguageMode.STABLE_OUT : languageOut;
languageOutIsDefaultStrict = Optional.of(languageOut.isDefaultStrict());
setOutputFeatureSet(languageOut.toFeatureSet());
}
}
/**
* Sets the features that allowed to appear in the output. Any feature in the input that is not
* in this output must be transpiled away.
*/
public void setOutputFeatureSet(FeatureSet featureSet) {
this.outputFeatureSet = Optional.of(featureSet);
}
/**
* Gets the set of features that can appear in the output.
*/
public FeatureSet getOutputFeatureSet() {
if (outputFeatureSet.isPresent()) {
return outputFeatureSet.get();
}
// Backwards compatibility for those that predate language out.
return languageIn.toFeatureSet();
}
/**
* Sets the behavior of PhaseOptimizer when given a pass that can't handle features in the current
* AST.
*
*
Currently the only options are either to run the pass anyway, and see what happens, or to
* skip the pass and log a warning. Only test code should do the former.
*
*
In the future we may make this option public. We may also make it into an enum, and add an
* option to throw runtime errors upon seeing unsupported passses.
*/
void setSkipUnsupportedPasses(boolean skipUnsupportedPasses) {
this.skipUnsupportedPasses = skipUnsupportedPasses;
}
boolean shouldSkipUnsupportedPasses() {
return skipUnsupportedPasses;
}
public boolean needsTranspilationFrom(FeatureSet languageLevel) {
// TODO(johnplaisted): This isn't really accurate. This should instead be the *parsed* language,
// not the *input* language.
return getLanguageIn().toFeatureSet().contains(languageLevel)
&& !getOutputFeatureSet().contains(languageLevel);
}
public boolean needsTranspilationOf(FeatureSet.Feature feature) {
return getLanguageIn().toFeatureSet().has(feature)
&& !getOutputFeatureSet().has(feature);
}
/**
* Set which set of builtin externs to use.
*/
public void setEnvironment(Environment environment) {
this.environment = environment;
}
public Environment getEnvironment() {
return environment;
}
public void setAliasTransformationHandler(
AliasTransformationHandler changes) {
this.aliasHandler = changes;
}
public AliasTransformationHandler getAliasTransformationHandler() {
return this.aliasHandler;
}
/**
* Set a custom handler for warnings and errors.
*
* This is mostly used for piping the warnings and errors to
* a file behind the scenes.
*
* If you want to filter warnings and errors, you should use a WarningsGuard.
*
* If you want to change how warnings and errors are reported to the user,
* you should set a ErrorManager on the Compiler. An ErrorManager is
* intended to summarize the errors for a single compile job.
*/
public void setErrorHandler(ErrorHandler handler) {
this.errorHandler = handler;
}
/**
* If true, enables type inference. If checkTypes is enabled, this flag has
* no effect.
*/
public void setInferTypes(boolean enable) {
inferTypes = enable;
}
/**
* Gets the inferTypes flag. Note that if checkTypes is enabled, this flag
* is ignored when configuring the compiler.
*/
public boolean getInferTypes() {
return inferTypes;
}
/** @deprecated This is a no-op. */
@Deprecated
public void setNewTypeInference(boolean enable) {
}
/**
* @return true if either typechecker is ON.
*/
public boolean isTypecheckingEnabled() {
return this.checkTypes;
}
/**
* @return Whether assumeStrictThis is set.
*/
public boolean assumeStrictThis() {
return assumeStrictThis;
}
/**
* If true, enables enables additional optimizations.
*/
public void setAssumeStrictThis(boolean enable) {
this.assumeStrictThis = enable;
}
/**
* @return Whether assumeClosuresOnlyCaptureReferences is set.
*/
public boolean assumeClosuresOnlyCaptureReferences() {
return assumeClosuresOnlyCaptureReferences;
}
/**
* Whether to assume closures capture only what they reference. This allows
* more aggressive function inlining.
*/
public void setAssumeClosuresOnlyCaptureReferences(boolean enable) {
this.assumeClosuresOnlyCaptureReferences = enable;
}
/**
* Sets the list of properties that we report property invalidation errors
* for.
*/
public void setPropertyInvalidationErrors(
Map propertyInvalidationErrors) {
this.propertyInvalidationErrors =
ImmutableMap.copyOf(propertyInvalidationErrors);
}
/**
* Configures the compiler for use as an IDE backend. In this mode:
*
* - No optimization passes will run.
* - The last time custom passes are invoked is
* {@link CustomPassExecutionTime#BEFORE_OPTIMIZATIONS}
* - The compiler will always try to process all inputs fully, even
* if it encounters errors.
* - The compiler may record more information than is strictly
* needed for codegen.
*
*
* @deprecated Some "IDE" clients will need some of these options but not
* others. Consider calling setChecksOnly, setAllowRecompilation, etc,
* explicitly, instead of calling this method which does a variety of
* different things.
*/
@Deprecated
public void setIdeMode(boolean ideMode) {
setChecksOnly(ideMode);
setContinueAfterErrors(ideMode);
setAllowHotswapReplaceScript(ideMode);
setPreserveDetailedSourceInfo(ideMode);
setParseJsDocDocumentation(
ideMode
? Config.JsDocParsing.INCLUDE_DESCRIPTIONS_NO_WHITESPACE
: Config.JsDocParsing.TYPES_ONLY);
}
public void setAllowHotswapReplaceScript(boolean allowRecompilation) {
this.allowHotswapReplaceScript = allowRecompilation;
}
boolean allowsHotswapReplaceScript() {
return allowHotswapReplaceScript;
}
public void setPreserveDetailedSourceInfo(boolean preserveDetailedSourceInfo) {
this.preserveDetailedSourceInfo = preserveDetailedSourceInfo;
}
boolean preservesDetailedSourceInfo() {
return preserveDetailedSourceInfo;
}
public void setContinueAfterErrors(boolean continueAfterErrors) {
this.continueAfterErrors = continueAfterErrors;
}
boolean canContinueAfterErrors() {
return continueAfterErrors;
}
/**
* Enables or disables the parsing of JSDoc documentation, and optionally also
* the preservation of all whitespace and formatting within a JSDoc comment.
* By default, whitespace is collapsed for all comments except {@literal @license} and
* {@literal @preserve} blocks,
*
*/
public void setParseJsDocDocumentation(Config.JsDocParsing parseJsDocDocumentation) {
this.parseJsDocDocumentation = parseJsDocDocumentation;
}
/**
* Checks JSDoc documentation will be parsed.
*
* @return True when JSDoc documentation will be parsed, false if not.
*/
public Config.JsDocParsing isParseJsDocDocumentation() {
return this.parseJsDocDocumentation;
}
/**
* Skip all passes (other than transpilation, if requested). Don't inject any
* runtime libraries (unless explicitly requested) or do any checks/optimizations
* (this is useful for per-file transpilation).
*/
public void setSkipNonTranspilationPasses(boolean skipNonTranspilationPasses) {
this.skipNonTranspilationPasses = skipNonTranspilationPasses;
}
public void setDevMode(DevMode devMode) {
this.devMode = devMode;
}
public void setCheckDeterminism(boolean checkDeterminism) {
this.checkDeterminism = checkDeterminism;
}
public boolean getCheckDeterminism() {
return checkDeterminism;
}
public void setMessageBundle(MessageBundle messageBundle) {
this.messageBundle = messageBundle;
}
public void setCheckSymbols(boolean checkSymbols) {
this.checkSymbols = checkSymbols;
}
public void setCheckSuspiciousCode(boolean checkSuspiciousCode) {
this.checkSuspiciousCode = checkSuspiciousCode;
}
public void setCheckTypes(boolean checkTypes) {
this.checkTypes = checkTypes;
}
public void setCheckMissingGetCssNameBlacklist(String blackList) {
this.checkMissingGetCssNameBlacklist = blackList;
}
public void setFoldConstants(boolean foldConstants) {
this.foldConstants = foldConstants;
}
public void setDeadAssignmentElimination(boolean deadAssignmentElimination) {
this.deadAssignmentElimination = deadAssignmentElimination;
}
public void setInlineConstantVars(boolean inlineConstantVars) {
this.inlineConstantVars = inlineConstantVars;
}
public void setCrossChunkCodeMotion(boolean crossChunkCodeMotion) {
this.crossChunkCodeMotion = crossChunkCodeMotion;
}
public void setCrossChunkCodeMotionNoStubMethods(boolean
crossChunkCodeMotionNoStubMethods) {
this.crossChunkCodeMotionNoStubMethods = crossChunkCodeMotionNoStubMethods;
}
public void setParentChunkCanSeeSymbolsDeclaredInChildren(
boolean parentChunkCanSeeSymbolsDeclaredInChildren) {
this.parentChunkCanSeeSymbolsDeclaredInChildren =
parentChunkCanSeeSymbolsDeclaredInChildren;
}
public void setCrossChunkMethodMotion(boolean crossChunkMethodMotion) {
this.crossChunkMethodMotion = crossChunkMethodMotion;
}
public void setCoalesceVariableNames(boolean coalesceVariableNames) {
this.coalesceVariableNames = coalesceVariableNames;
}
public void setInlineLocalVariables(boolean inlineLocalVariables) {
this.inlineLocalVariables = inlineLocalVariables;
}
public void setFlowSensitiveInlineVariables(boolean enabled) {
this.flowSensitiveInlineVariables = enabled;
}
public void setSmartNameRemoval(boolean smartNameRemoval) {
// TODO(bradfordcsmith): Remove the smart name removal option.
this.smartNameRemoval = smartNameRemoval;
if (smartNameRemoval) {
// To get the effect this option used to have we need to enable these options.
// Don't disable them here if they were set explicitly, though.
this.removeUnusedVars = true;
this.removeUnusedPrototypeProperties = true;
}
}
public void setExtraSmartNameRemoval(boolean smartNameRemoval) {
this.extraSmartNameRemoval = smartNameRemoval;
}
public void setRemoveDeadCode(boolean removeDeadCode) {
this.removeDeadCode = removeDeadCode;
}
public void setExtractPrototypeMemberDeclarations(boolean enabled) {
this.extractPrototypeMemberDeclarations =
enabled ? ExtractPrototypeMemberDeclarationsMode.USE_GLOBAL_TEMP
: ExtractPrototypeMemberDeclarationsMode.OFF;
}
// USE_IIFE is currently unused. Consider removing support for it and
// deleting this setter.
public void setExtractPrototypeMemberDeclarations(ExtractPrototypeMemberDeclarationsMode mode) {
this.extractPrototypeMemberDeclarations = mode;
}
public void setRemoveUnusedPrototypeProperties(boolean enabled) {
this.removeUnusedPrototypeProperties = enabled;
// InlineSimpleMethods makes similar assumptions to
// RemoveUnusedCode, so they are enabled together.
this.inlineGetters = enabled;
}
public void setRemoveUnusedPrototypePropertiesInExterns(boolean enabled) {
this.removeUnusedPrototypePropertiesInExterns = enabled;
}
public void setCollapseVariableDeclarations(boolean enabled) {
this.collapseVariableDeclarations = enabled;
}
public void setCollapseAnonymousFunctions(boolean enabled) {
this.collapseAnonymousFunctions = enabled;
}
public void setAliasableStrings(Set aliasableStrings) {
this.aliasableStrings = aliasableStrings;
}
public void setAliasStringsBlacklist(String aliasStringsBlacklist) {
this.aliasStringsBlacklist = aliasStringsBlacklist;
}
public void setAliasAllStrings(boolean aliasAllStrings) {
this.aliasAllStrings = aliasAllStrings;
}
public void setOutputJsStringUsage(boolean outputJsStringUsage) {
this.outputJsStringUsage = outputJsStringUsage;
}
public void setConvertToDottedProperties(boolean convertToDottedProperties) {
this.convertToDottedProperties = convertToDottedProperties;
}
public void setUseTypesForLocalOptimization(boolean useTypesForLocalOptimization) {
this.useTypesForLocalOptimization = useTypesForLocalOptimization;
}
public boolean shouldUseTypesForLocalOptimization() {
return this.useTypesForLocalOptimization;
}
@Deprecated
public void setUseTypesForOptimization(boolean useTypesForOptimization) {
if (useTypesForOptimization) {
this.disambiguateProperties = useTypesForOptimization;
this.ambiguateProperties = useTypesForOptimization;
this.inlineProperties = useTypesForOptimization;
this.useTypesForLocalOptimization = useTypesForOptimization;
}
}
public void setRewriteFunctionExpressions(boolean rewriteFunctionExpressions) {
this.rewriteFunctionExpressions = rewriteFunctionExpressions;
}
public void setOptimizeCalls(boolean optimizeCalls) {
this.optimizeCalls = optimizeCalls;
}
public void setOptimizeArgumentsArray(boolean optimizeArgumentsArray) {
this.optimizeArgumentsArray = optimizeArgumentsArray;
}
public void setVariableRenaming(VariableRenamingPolicy variableRenaming) {
this.variableRenaming = variableRenaming;
}
public void setPropertyRenaming(PropertyRenamingPolicy propertyRenaming) {
this.propertyRenaming = propertyRenaming;
}
public PropertyRenamingPolicy getPropertyRenaming() {
return this.propertyRenaming;
}
public void setLabelRenaming(boolean labelRenaming) {
this.labelRenaming = labelRenaming;
}
public void setReserveRawExports(boolean reserveRawExports) {
this.reserveRawExports = reserveRawExports;
}
public void setPreferStableNames(boolean preferStableNames) {
this.preferStableNames = preferStableNames;
}
public void setGeneratePseudoNames(boolean generatePseudoNames) {
this.generatePseudoNames = generatePseudoNames;
}
public void setRenamePrefix(String renamePrefix) {
this.renamePrefix = renamePrefix;
}
public String getRenamePrefixNamespace() {
return this.renamePrefixNamespace;
}
public void setRenamePrefixNamespace(String renamePrefixNamespace) {
this.renamePrefixNamespace = renamePrefixNamespace;
}
public void setCollapsePropertiesLevel(PropertyCollapseLevel level) {
this.collapsePropertiesLevel = level;
}
@Deprecated
public void setCollapseProperties(boolean fullyCollapse) {
this.collapsePropertiesLevel =
fullyCollapse ? PropertyCollapseLevel.ALL : PropertyCollapseLevel.NONE;
}
public void setDevirtualizeMethods(boolean devirtualizeMethods) {
this.devirtualizeMethods = devirtualizeMethods;
}
public void setComputeFunctionSideEffects(boolean computeFunctionSideEffects) {
this.computeFunctionSideEffects = computeFunctionSideEffects;
}
/**
* @return Whether disambiguate private properties is enabled.
*/
public boolean isDisambiguatePrivateProperties() {
return disambiguatePrivateProperties;
}
/**
* @param value Whether to enable private property disambiguation based on
* the coding convention.
*/
public void setDisambiguatePrivateProperties(boolean value) {
this.disambiguatePrivateProperties = value;
}
public void setDisambiguateProperties(boolean disambiguateProperties) {
this.disambiguateProperties = disambiguateProperties;
}
public boolean shouldDisambiguateProperties() {
return this.disambiguateProperties;
}
public void setUseGraphBasedDisambiguator(boolean x) {
this.useGraphBasedDisambiguator = x;
}
public boolean shouldUseGraphBasedDisambiguator() {
return this.useGraphBasedDisambiguator;
}
public void setAmbiguateProperties(boolean ambiguateProperties) {
this.ambiguateProperties = ambiguateProperties;
}
public boolean shouldAmbiguateProperties() {
return this.ambiguateProperties;
}
public void setAnonymousFunctionNaming(
AnonymousFunctionNamingPolicy anonymousFunctionNaming) {
this.anonymousFunctionNaming = anonymousFunctionNaming;
}
public void setInputAnonymousFunctionNamingMap(VariableMap inputMap) {
this.inputAnonymousFunctionNamingMap = inputMap;
}
public void setInputVariableMap(VariableMap inputVariableMap) {
this.inputVariableMap = inputVariableMap;
}
public void setInputPropertyMap(VariableMap inputPropertyMap) {
this.inputPropertyMap = inputPropertyMap;
}
public void setExportTestFunctions(boolean exportTestFunctions) {
this.exportTestFunctions = exportTestFunctions;
}
public void setRuntimeTypeCheck(boolean runtimeTypeCheck) {
this.runtimeTypeCheck = runtimeTypeCheck;
}
public void setRuntimeTypeCheckLogFunction(String runtimeTypeCheckLogFunction) {
this.runtimeTypeCheckLogFunction = runtimeTypeCheckLogFunction;
}
public void setSyntheticBlockStartMarker(String syntheticBlockStartMarker) {
this.syntheticBlockStartMarker = syntheticBlockStartMarker;
}
public void setSyntheticBlockEndMarker(String syntheticBlockEndMarker) {
this.syntheticBlockEndMarker = syntheticBlockEndMarker;
}
public void setLocale(String locale) {
this.locale = locale;
}
public void setMarkAsCompiled(boolean markAsCompiled) {
this.markAsCompiled = markAsCompiled;
}
public void setClosurePass(boolean closurePass) {
this.closurePass = closurePass;
}
/** Preserve closure primitives.
*
* For now, this only preserves goog.provide(), goog.require() and goog.module() calls.
*/
public void setPreserveClosurePrimitives(boolean preserveClosurePrimitives) {
this.preserveClosurePrimitives = preserveClosurePrimitives;
}
public boolean shouldPreservesGoogProvidesAndRequires() {
return this.preserveClosurePrimitives;
}
public boolean shouldPreserveGoogModule() {
return this.preserveClosurePrimitives;
}
/** Do not process goog. intrinsics, such as goog.getCssName(). */
public boolean shouldPreserveGoogLibraryPrimitives() {
return this.preserveClosurePrimitives;
}
public void setPreserveTypeAnnotations(boolean preserveTypeAnnotations) {
this.preserveTypeAnnotations = preserveTypeAnnotations;
}
public void setGatherCssNames(boolean gatherCssNames) {
this.gatherCssNames = gatherCssNames;
}
public void setStripTypes(Set stripTypes) {
this.stripTypes = stripTypes;
}
public void setStripNameSuffixes(Set stripNameSuffixes) {
this.stripNameSuffixes = stripNameSuffixes;
}
public void setStripNamePrefixes(Set stripNamePrefixes) {
this.stripNamePrefixes = stripNamePrefixes;
}
public void setStripTypePrefixes(Set stripTypePrefixes) {
this.stripTypePrefixes = stripTypePrefixes;
}
public void addCustomPass(CustomPassExecutionTime time, CompilerPass customPass) {
if (customPasses == null) {
customPasses = LinkedHashMultimap.create();
}
customPasses.put(time, customPass);
}
public void setDefineReplacements(Map defineReplacements) {
this.defineReplacements = defineReplacements;
}
public void setTweakReplacements(Map tweakReplacements) {
this.tweakReplacements = tweakReplacements;
}
public void setMoveFunctionDeclarations(boolean moveFunctionDeclarations) {
this.moveFunctionDeclarations = moveFunctionDeclarations;
}
public void setCssRenamingMap(CssRenamingMap cssRenamingMap) {
this.cssRenamingMap = cssRenamingMap;
}
public void setCssRenamingWhitelist(Set whitelist) {
this.cssRenamingWhitelist = whitelist;
}
public void setReplaceStringsFunctionDescriptions(
List replaceStringsFunctionDescriptions) {
this.replaceStringsFunctionDescriptions =
replaceStringsFunctionDescriptions;
}
public void setReplaceStringsPlaceholderToken(
String replaceStringsPlaceholderToken) {
this.replaceStringsPlaceholderToken =
replaceStringsPlaceholderToken;
}
public void setReplaceStringsReservedStrings(
Set replaceStringsReservedStrings) {
this.replaceStringsReservedStrings =
replaceStringsReservedStrings;
}
public void setReplaceStringsInputMap(VariableMap serializedMap) {
this.replaceStringsInputMap = serializedMap;
}
public void setPrettyPrint(boolean prettyPrint) {
this.prettyPrint = prettyPrint;
}
public boolean isPrettyPrint() {
return this.prettyPrint;
}
public void setLineBreak(boolean lineBreak) {
this.lineBreak = lineBreak;
}
public boolean getPreferLineBreakAtEndOfFile() {
return this.preferLineBreakAtEndOfFile;
}
public void setPreferLineBreakAtEndOfFile(boolean lineBreakAtEnd) {
this.preferLineBreakAtEndOfFile = lineBreakAtEnd;
}
public void setPrintInputDelimiter(boolean printInputDelimiter) {
this.printInputDelimiter = printInputDelimiter;
}
public void setInputDelimiter(String inputDelimiter) {
this.inputDelimiter = inputDelimiter;
}
public void setDebugLogDirectory(@Nullable Path dir) {
this.debugLogDirectory = dir;
}
@Nullable
public Path getDebugLogDirectory() {
return debugLogDirectory;
}
public void setQuoteKeywordProperties(boolean quoteKeywordProperties) {
this.quoteKeywordProperties = quoteKeywordProperties;
}
public boolean shouldQuoteKeywordProperties() {
// Never quote properties in .i.js files
if (incrementalCheckMode == IncrementalCheckMode.GENERATE_IJS) {
return false;
}
return this.quoteKeywordProperties || FeatureSet.ES3.contains(getOutputFeatureSet());
}
public void setErrorFormat(ErrorFormat errorFormat) {
this.errorFormat = errorFormat;
}
public ErrorFormat getErrorFormat() {
return this.errorFormat;
}
public void setWarningsGuard(ComposeWarningsGuard warningsGuard) {
this.warningsGuard = warningsGuard;
}
public void setLineLengthThreshold(int lineLengthThreshold) {
this.lineLengthThreshold = lineLengthThreshold;
}
public int getLineLengthThreshold() {
return this.lineLengthThreshold;
}
public void setUseOriginalNamesInOutput(boolean useOriginalNamesInOutput) {
this.useOriginalNamesInOutput = useOriginalNamesInOutput;
}
public boolean getUseOriginalNamesInOutput() {
return this.useOriginalNamesInOutput;
}
public void setExternExports(boolean externExports) {
this.externExports = externExports;
}
public void setExternExportsPath(String externExportsPath) {
this.externExportsPath = externExportsPath;
}
public void setSourceMapOutputPath(String sourceMapOutputPath) {
this.sourceMapOutputPath = sourceMapOutputPath;
}
public void setApplyInputSourceMaps(boolean applyInputSourceMaps) {
this.applyInputSourceMaps = applyInputSourceMaps;
}
public void setResolveSourceMapAnnotations(boolean resolveSourceMapAnnotations) {
this.resolveSourceMapAnnotations = resolveSourceMapAnnotations;
}
public void setSourceMapIncludeSourcesContent(boolean sourceMapIncludeSourcesContent) {
this.sourceMapIncludeSourcesContent = sourceMapIncludeSourcesContent;
}
public void setParseInlineSourceMaps(boolean parseInlineSourceMaps) {
this.parseInlineSourceMaps = parseInlineSourceMaps;
}
public void setSourceMapDetailLevel(SourceMap.DetailLevel sourceMapDetailLevel) {
this.sourceMapDetailLevel = sourceMapDetailLevel;
}
public void setSourceMapFormat(SourceMap.Format sourceMapFormat) {
this.sourceMapFormat = sourceMapFormat;
}
public void setSourceMapLocationMappings(
List sourceMapLocationMappings) {
this.sourceMapLocationMappings = sourceMapLocationMappings;
}
/**
* Activates transformation of AMD to CommonJS modules.
*/
public void setTransformAMDToCJSModules(boolean transformAMDToCJSModules) {
this.transformAMDToCJSModules = transformAMDToCJSModules;
}
/**
* Rewrites CommonJS modules so that modules can be concatenated together,
* by renaming all globals to avoid conflicting with other modules.
*/
public void setProcessCommonJSModules(boolean processCommonJSModules) {
this.processCommonJSModules = processCommonJSModules;
}
public boolean getProcessCommonJSModules() {
return processCommonJSModules;
}
/**
* How ES6 modules should be transformed.
*/
public enum Es6ModuleTranspilation {
/**
* Do not touch any Es6 module feature.
*/
NONE,
/**
* Rewrite import paths to resolved, relative paths only.
*/
RELATIVIZE_IMPORT_PATHS,
/**
* Rewrite to common js like modules for bundling.
*/
TO_COMMON_JS_LIKE_MODULES,
/**
* Compile ES6 modules.
*/
COMPILE
}
private Es6ModuleTranspilation es6ModuleTranspilation = Es6ModuleTranspilation.COMPILE;
public void setEs6ModuleTranspilation(Es6ModuleTranspilation value) {
es6ModuleTranspilation = value;
}
public Es6ModuleTranspilation getEs6ModuleTranspilation() {
return es6ModuleTranspilation;
}
/**
* Sets a path prefix for CommonJS modules (maps to {@link #setModuleRoots(List)}).
*/
public void setCommonJSModulePathPrefix(String commonJSModulePathPrefix) {
setModuleRoots(ImmutableList.of(commonJSModulePathPrefix));
}
/**
* Sets the module roots.
*/
public void setModuleRoots(List moduleRoots) {
this.moduleRoots = moduleRoots;
}
/**
* Sets whether to rewrite polyfills.
*/
public void setRewritePolyfills(boolean rewritePolyfills) {
this.rewritePolyfills = rewritePolyfills;
}
public boolean getRewritePolyfills() {
return this.rewritePolyfills;
}
/** Sets whether to isolate polyfills from the global scope. */
public void setIsolatePolyfills(boolean isolatePolyfills) {
this.isolatePolyfills = isolatePolyfills;
if (this.isolatePolyfills) {
this.setDefineToBooleanLiteral("$jscomp.ISOLATE_POLYFILLS", isolatePolyfills);
}
}
public boolean getIsolatePolyfills() {
return this.isolatePolyfills;
}
/**
* Sets list of libraries to always inject, even if not needed.
*/
public void setForceLibraryInjection(Iterable libraries) {
this.forceLibraryInjection = ImmutableList.copyOf(libraries);
}
/**
* Sets the set of libraries to never inject, even if required.
*/
public void setPreventLibraryInjection(boolean preventLibraryInjection) {
this.preventLibraryInjection = preventLibraryInjection;
}
/**
* Set whether or not code should be modified to provide coverage
* information.
*/
public void setInstrumentForCoverage(boolean instrumentForCoverage) {
this.instrumentForCoverage = instrumentForCoverage;
}
/** Set whether to instrument to collect branch coverage */
public void setInstrumentBranchCoverage(boolean instrumentBranchCoverage) {
if (instrumentForCoverage || !instrumentBranchCoverage) {
this.instrumentBranchCoverage = instrumentBranchCoverage;
} else {
throw new RuntimeException("The option instrumentForCoverage must be set to true for "
+ "instrumentBranchCoverage to be set to true.");
}
}
public final ImmutableList getConformanceConfigs() {
return conformanceConfigs;
}
/** Both enable and configure conformance checks, if non-null. */
@GwtIncompatible("Conformance")
public void setConformanceConfig(ConformanceConfig conformanceConfig) {
setConformanceConfigs(ImmutableList.of(conformanceConfig));
}
/**
* Both enable and configure conformance checks, if non-null.
*/
@GwtIncompatible("Conformance")
public void setConformanceConfigs(List configs) {
this.conformanceConfigs =
ImmutableList.builder()
.add(ResourceLoader.loadGlobalConformance(CompilerOptions.class))
.addAll(configs)
.build();
}
public void clearConformanceConfigs() {
this.conformanceConfigs = ImmutableList.of();
}
/**
* Whether the output should contain a 'use strict' directive.
*/
public boolean shouldEmitUseStrict() {
// Fall back to the language in's strictness if there is no output language explicitly set
// for backwards compatibility.
return this.emitUseStrict.or(languageOutIsDefaultStrict).or(languageIn.isDefaultStrict());
}
public CompilerOptions setEmitUseStrict(boolean emitUseStrict) {
this.emitUseStrict = Optional.of(emitUseStrict);
return this;
}
public ResolutionMode getModuleResolutionMode() {
return this.moduleResolutionMode;
}
public void setModuleResolutionMode(ResolutionMode moduleResolutionMode) {
this.moduleResolutionMode = moduleResolutionMode;
}
public ImmutableMap getBrowserResolverPrefixReplacements() {
return this.browserResolverPrefixReplacements;
}
public void setBrowserResolverPrefixReplacements(
ImmutableMap browserResolverPrefixReplacements) {
this.browserResolverPrefixReplacements = browserResolverPrefixReplacements;
}
public void setPathEscaper(ModuleLoader.PathEscaper pathEscaper) {
this.pathEscaper = pathEscaper;
}
public ModuleLoader.PathEscaper getPathEscaper() {
return pathEscaper;
}
public List getPackageJsonEntryNames() {
return this.packageJsonEntryNames;
}
public void setPackageJsonEntryNames(List names) {
this.packageJsonEntryNames = names;
}
public void setUseSizeHeuristicToStopOptimizationLoop(boolean mayStopEarly) {
this.useSizeHeuristicToStopOptimizationLoop = mayStopEarly;
}
public void setMaxOptimizationLoopIterations(int maxIterations) {
this.optimizationLoopMaxIterations = maxIterations;
}
/** Serializes compiler options to a stream. */
@GwtIncompatible("ObjectOutputStream")
public void serialize(OutputStream objectOutputStream) throws IOException {
new java.io.ObjectOutputStream(objectOutputStream).writeObject(this);
}
/** Deserializes compiler options from a stream. */
@GwtIncompatible("ObjectInputStream")
public static CompilerOptions deserialize(InputStream objectInputStream)
throws IOException, ClassNotFoundException {
return (CompilerOptions) new java.io.ObjectInputStream(objectInputStream).readObject();
}
@Override
public String toString() {
String strValue =
MoreObjects.toStringHelper(this)
.omitNullValues()
.add("aggressiveFusion", aggressiveFusion)
.add("aliasableStrings", aliasableStrings)
.add("aliasAllStrings", aliasAllStrings)
.add("aliasHandler", getAliasTransformationHandler())
.add("aliasStringsBlacklist", aliasStringsBlacklist)
.add("allowHotswapReplaceScript", allowsHotswapReplaceScript())
.add("ambiguateProperties", ambiguateProperties)
.add("angularPass", angularPass)
.add("anonymousFunctionNaming", anonymousFunctionNaming)
.add("assumeClosuresOnlyCaptureReferences", assumeClosuresOnlyCaptureReferences)
.add("assumeGettersArePure", assumeGettersArePure)
.add("assumeStrictThis", assumeStrictThis())
.add("browserResolverPrefixReplacements", browserResolverPrefixReplacements)
.add("brokenClosureRequiresLevel", brokenClosureRequiresLevel)
.add("checkDeterminism", getCheckDeterminism())
.add("checkGlobalNamesLevel", checkGlobalNamesLevel)
.add("checkGlobalThisLevel", checkGlobalThisLevel)
.add("checkMissingGetCssNameBlacklist", checkMissingGetCssNameBlacklist)
.add("checkMissingGetCssNameLevel", checkMissingGetCssNameLevel)
.add("checksOnly", checksOnly)
.add("checkSuspiciousCode", checkSuspiciousCode)
.add("checkSymbols", checkSymbols)
.add("checkTypes", checkTypes)
.add("closurePass", closurePass)
.add("coalesceVariableNames", coalesceVariableNames)
.add("codingConvention", getCodingConvention())
.add("collapseAnonymousFunctions", collapseAnonymousFunctions)
.add("collapseObjectLiterals", collapseObjectLiterals)
.add("collapseProperties", collapsePropertiesLevel)
.add("collapseVariableDeclarations", collapseVariableDeclarations)
.add("colorizeErrorOutput", shouldColorizeErrorOutput())
.add("computeFunctionSideEffects", computeFunctionSideEffects)
.add("conformanceConfigs", getConformanceConfigs())
.add("conformanceRemoveRegexFromPath", conformanceRemoveRegexFromPath)
.add("continueAfterErrors", canContinueAfterErrors())
.add("convertToDottedProperties", convertToDottedProperties)
.add("crossChunkCodeMotion", crossChunkCodeMotion)
.add("crossChunkCodeMotionNoStubMethods", crossChunkCodeMotionNoStubMethods)
.add("crossChunkMethodMotion", crossChunkMethodMotion)
.add("cssRenamingMap", cssRenamingMap)
.add("cssRenamingWhitelist", cssRenamingWhitelist)
.add("customPasses", customPasses)
.add("dartPass", dartPass)
.add("deadAssignmentElimination", deadAssignmentElimination)
.add("debugLogDirectory", debugLogDirectory)
.add("declaredGlobalExternsOnWindow", declaredGlobalExternsOnWindow)
.add("defineReplacements", getDefineReplacements())
.add("dependencyOptions", getDependencyOptions())
.add("devirtualizeMethods", devirtualizeMethods)
.add("devMode", devMode)
.add("disambiguatePrivateProperties", disambiguatePrivateProperties)
.add("disambiguateProperties", disambiguateProperties)
.add("enableModuleRewriting", enableModuleRewriting)
.add("enforceAccessControlCodingConventions", enforceAccessControlCodingConventions)
.add("environment", getEnvironment())
.add("errorFormat", errorFormat)
.add("errorHandler", errorHandler)
.add("es6ModuleTranspilation", es6ModuleTranspilation)
.add("exportLocalPropertyDefinitions", exportLocalPropertyDefinitions)
.add("exportTestFunctions", exportTestFunctions)
.add("externExports", isExternExportsEnabled())
.add("externExportsPath", externExportsPath)
.add("extraAnnotationNames", extraAnnotationNames)
.add("extractPrototypeMemberDeclarations", extractPrototypeMemberDeclarations)
.add("extraSmartNameRemoval", extraSmartNameRemoval)
.add("filesToPrintAfterEachPassRegexList", filesToPrintAfterEachPassRegexList)
.add("flowSensitiveInlineVariables", flowSensitiveInlineVariables)
.add("foldConstants", foldConstants)
.add("forceLibraryInjection", forceLibraryInjection)
.add("gatherCssNames", gatherCssNames)
.add("generateExports", generateExports)
.add("generatePseudoNames", generatePseudoNames)
.add("generateTypedExterns", shouldGenerateTypedExterns())
.add("idGenerators", idGenerators)
.add("idGeneratorsMapSerialized", idGeneratorsMapSerialized)
.add("incrementalCheckMode", incrementalCheckMode)
.add("inferConsts", inferConsts)
.add("inferTypes", inferTypes)
.add("inlineConstantVars", inlineConstantVars)
.add("inlineFunctionsLevel", inlineFunctionsLevel)
.add("inlineGetters", inlineGetters)
.add("inlineLocalVariables", inlineLocalVariables)
.add("inlineProperties", inlineProperties)
.add("inlineVariables", inlineVariables)
.add("inputAnonymousFunctionNamingMap", inputAnonymousFunctionNamingMap)
.add("inputDelimiter", inputDelimiter)
.add("inputPropertyMap", inputPropertyMap)
.add("inputSourceMaps", inputSourceMaps)
.add("inputVariableMap", inputVariableMap)
.add("instrumentForCoverage", instrumentForCoverage)
.add("instrumentForCoverageOnly", instrumentForCoverageOnly)
.add("instrumentBranchCoverage", instrumentBranchCoverage)
.add("isolatePolyfills", isolatePolyfills)
.add("j2clMinifierEnabled", j2clMinifierEnabled)
.add("j2clMinifierPruningManifest", j2clMinifierPruningManifest)
.add("j2clPassMode", j2clPassMode)
.add("labelRenaming", labelRenaming)
.add("languageIn", getLanguageIn())
.add("languageOutIsDefaultStrict", languageOutIsDefaultStrict)
.add("legacyCodeCompile", legacyCodeCompile)
.add("lineBreak", lineBreak)
.add("lineLengthThreshold", lineLengthThreshold)
.add("locale", locale)
.add("markAsCompiled", markAsCompiled)
.add("maxFunctionSizeAfterInlining", maxFunctionSizeAfterInlining)
.add("messageBundle", messageBundle)
.add("moduleRoots", moduleRoots)
.add("chunksToPrintAfterEachPassRegexList", chunksToPrintAfterEachPassRegexList)
.add("moveFunctionDeclarations", moveFunctionDeclarations)
.add("nameGenerator", nameGenerator)
.add("optimizeArgumentsArray", optimizeArgumentsArray)
.add("optimizeCalls", optimizeCalls)
.add("outputCharset", outputCharset)
.add("outputFeatureSet", outputFeatureSet)
.add("outputJs", outputJs)
.add("outputJsStringUsage", outputJsStringUsage)
.add(
"parentChunkCanSeeSymbolsDeclaredInChildren",
parentChunkCanSeeSymbolsDeclaredInChildren)
.add("parseJsDocDocumentation", isParseJsDocDocumentation())
.add("pathEscaper", pathEscaper)
.add("polymerVersion", polymerVersion)
.add("polymerExportPolicy", polymerExportPolicy)
.add("preferLineBreakAtEndOfFile", preferLineBreakAtEndOfFile)
.add("preferSingleQuotes", preferSingleQuotes)
.add("preferStableNames", preferStableNames)
.add("preserveDetailedSourceInfo", preservesDetailedSourceInfo())
.add("preserveGoogProvidesAndRequires", preserveClosurePrimitives)
.add("preserveTypeAnnotations", preserveTypeAnnotations)
.add("prettyPrint", prettyPrint)
.add("preventLibraryInjection", preventLibraryInjection)
.add("printConfig", printConfig)
.add("printInputDelimiter", printInputDelimiter)
.add("printSourceAfterEachPass", printSourceAfterEachPass)
.add("processCommonJSModules", processCommonJSModules)
.add("propertyInvalidationErrors", propertyInvalidationErrors)
.add("propertyRenaming", propertyRenaming)
.add("protectHiddenSideEffects", protectHiddenSideEffects)
.add("quoteKeywordProperties", quoteKeywordProperties)
.add("removeAbstractMethods", removeAbstractMethods)
.add("removeClosureAsserts", removeClosureAsserts)
.add("removeJ2clAsserts", removeJ2clAsserts)
.add("removeDeadCode", removeDeadCode)
.add("removeUnusedClassProperties", removeUnusedClassProperties)
.add("removeUnusedConstructorProperties", removeUnusedConstructorProperties)
.add("removeUnusedLocalVars", removeUnusedLocalVars)
.add("removeUnusedPrototypeProperties", removeUnusedPrototypeProperties)
.add(
"removeUnusedPrototypePropertiesInExterns",
removeUnusedPrototypePropertiesInExterns)
.add("removeUnusedVars", removeUnusedVars)
.add(
"renamePrefixNamespaceAssumeCrossChunkNames",
renamePrefixNamespaceAssumeCrossChunkNames)
.add("renamePrefixNamespace", renamePrefixNamespace)
.add("renamePrefix", renamePrefix)
.add("replaceIdGenerators", replaceIdGenerators)
.add("replaceMessagesWithChromeI18n", replaceMessagesWithChromeI18n)
.add("replaceStringsFunctionDescriptions", replaceStringsFunctionDescriptions)
.add("replaceStringsInputMap", replaceStringsInputMap)
.add("replaceStringsPlaceholderToken", replaceStringsPlaceholderToken)
.add("replaceStringsReservedStrings", replaceStringsReservedStrings)
.add("reserveRawExports", reserveRawExports)
.add("rewriteFunctionExpressions", rewriteFunctionExpressions)
.add("rewritePolyfills", rewritePolyfills)
.add("runtimeTypeCheckLogFunction", runtimeTypeCheckLogFunction)
.add("runtimeTypeCheck", runtimeTypeCheck)
.add("shadowVariables", shadowVariables)
.add("rewriteModulesBeforeTypechecking", rewriteModulesBeforeTypechecking)
.add("skipNonTranspilationPasses", skipNonTranspilationPasses)
.add("smartNameRemoval", smartNameRemoval)
.add("sourceMapDetailLevel", sourceMapDetailLevel)
.add("sourceMapFormat", sourceMapFormat)
.add("sourceMapLocationMappings", sourceMapLocationMappings)
.add("sourceMapOutputPath", sourceMapOutputPath)
.add("stripNamePrefixes", stripNamePrefixes)
.add("stripNameSuffixes", stripNameSuffixes)
.add("stripTypePrefixes", stripTypePrefixes)
.add("stripTypes", stripTypes)
.add("summaryDetailLevel", summaryDetailLevel)
.add("syntheticBlockEndMarker", syntheticBlockEndMarker)
.add("syntheticBlockStartMarker", syntheticBlockStartMarker)
.add("tcProjectId", tcProjectId)
.add("tracer", tracer)
.add("transformAMDToCJSModules", transformAMDToCJSModules)
.add("trustedStrings", trustedStrings)
.add("tweakProcessing", getTweakProcessing())
.add("tweakReplacements", getTweakReplacements())
.add("emitUseStrict", emitUseStrict)
.add("useTypesForLocalOptimization", useTypesForLocalOptimization)
.add("variableRenaming", variableRenaming)
.add("warningsGuard", getWarningsGuard())
.add("wrapGoogModulesForWhitespaceOnly", wrapGoogModulesForWhitespaceOnly)
.toString();
return strValue;
}
//////////////////////////////////////////////////////////////////////////////
// Enums
/**
* A language mode applies to the whole compilation job.
* As a result, the compiler does not support mixed strict and non-strict in
* the same compilation job. Therefore, the 'use strict' directive is ignored
* when the language mode is not strict.
*/
public enum LanguageMode {
/**
* 90's JavaScript
*/
ECMASCRIPT3,
/**
* Traditional JavaScript
*/
ECMASCRIPT5,
/**
* Nitpicky, traditional JavaScript
*/
ECMASCRIPT5_STRICT,
/** ECMAScript standard approved in 2015. */
ECMASCRIPT_2015,
/**
* A superset of ES6 which adds Typescript-style type declarations. Always strict.
*/
ECMASCRIPT6_TYPED,
/**
* ECMAScript standard approved in 2016.
* Adds the exponent operator (**).
*/
ECMASCRIPT_2016,
/** ECMAScript standard approved in 2017. Adds async/await and other syntax */
ECMASCRIPT_2017,
/** ECMAScript standard approved in 2018. Adds "..." in object literals/patterns. */
ECMASCRIPT_2018,
/** ECMAScript standard approved in 2019. Adds catch blocks with no error binding. */
ECMASCRIPT_2019,
/** ECMAScript standard approved in 2020. */
ECMASCRIPT_2020,
/** ECMAScript latest draft standard. */
ECMASCRIPT_NEXT,
/**
* ECMAScript latest draft standard. Transpiled but no pass through. Should ONLY be used for
* language_in
*/
ECMASCRIPT_NEXT_IN,
/** Use stable features. */
STABLE,
/** For languageOut only. The same language mode as the input. */
NO_TRANSPILE,
/**
* For testing only. Features that can be parsed but cannot be understood by the rest of the
* compiler yet.
*/
UNSUPPORTED;
public static final LanguageMode STABLE_IN = ECMASCRIPT_2019;
public static final LanguageMode STABLE_OUT = ECMASCRIPT5;
/** Whether this language mode defaults to strict mode */
boolean isDefaultStrict() {
switch (this) {
case ECMASCRIPT3:
case ECMASCRIPT5:
return false;
default:
return true;
}
}
public static LanguageMode fromString(String value) {
if (value == null) {
return null;
}
// Trim spaces, disregard case, and allow abbreviation of ECMASCRIPT for convenience.
String canonicalizedName = Ascii.toUpperCase(value.trim()).replaceFirst("^ES", "ECMASCRIPT");
if (canonicalizedName.equals("ECMASCRIPT6")
|| canonicalizedName.equals("ECMASCRIPT6_STRICT")) {
return ECMASCRIPT_2015;
}
try {
return LanguageMode.valueOf(canonicalizedName);
} catch (IllegalArgumentException e) {
return null; // unknown name.
}
}
public FeatureSet toFeatureSet() {
switch (this) {
case ECMASCRIPT3:
return FeatureSet.ES3;
case ECMASCRIPT5:
case ECMASCRIPT5_STRICT:
return FeatureSet.ES5;
case ECMASCRIPT_2015:
return FeatureSet.ES6_MODULES;
case ECMASCRIPT_2016:
return FeatureSet.ES7_MODULES;
case ECMASCRIPT_2017:
return FeatureSet.ES8_MODULES;
case ECMASCRIPT_2018:
return FeatureSet.ES2018_MODULES;
case ECMASCRIPT_2019:
return FeatureSet.ES2019_MODULES;
case ECMASCRIPT_2020:
return FeatureSet.ES2020_MODULES;
case ECMASCRIPT_NEXT:
case NO_TRANSPILE:
return FeatureSet.ES_NEXT;
case ECMASCRIPT_NEXT_IN:
return FeatureSet.ES_NEXT_IN;
case UNSUPPORTED:
return FeatureSet.ES_UNSUPPORTED;
case ECMASCRIPT6_TYPED:
return FeatureSet.TYPESCRIPT;
case STABLE:
throw new UnsupportedOperationException(
"STABLE has different feature sets for language in and out. "
+ "Use STABLE_IN or STABLE_OUT.");
}
throw new IllegalStateException();
}
}
/** When to do the extra validity checks */
public static enum DevMode {
/**
* Don't do any extra checks.
*/
OFF,
/**
* After the initial parse
*/
START,
/**
* At the start and at the end of all optimizations.
*/
START_AND_END,
/**
* After every pass
*/
EVERY_PASS
}
/** How much tracing we want to do */
public static enum TracerMode {
ALL, // Collect all timing and size metrics. Very slow.
RAW_SIZE, // Collect all timing and size metrics, except gzipped size. Slow.
AST_SIZE, // For size data, don't serialize the AST, just count the number of nodes.
TIMING_ONLY, // Collect timing metrics only.
OFF; // Collect no timing and size metrics.
public boolean isOn() {
return this != OFF;
}
}
/** Option for the ProcessTweaks pass */
public static enum TweakProcessing {
OFF, // Do not run the ProcessTweaks pass.
CHECK, // Run the pass, but do not strip out the calls.
STRIP; // Strip out all calls to goog.tweak.*.
public boolean isOn() {
return this != OFF;
}
public boolean shouldStrip() {
return this == STRIP;
}
}
/** What kind of isolation is going to be used */
public static enum IsolationMode {
NONE, // output does not include additional isolation.
IIFE; // The output should be wrapped in an IIFE to isolate global variables.
}
/**
* A Role Specific Interface for JS Compiler that represents a data holder
* object which is used to store goog.scope alias code changes to code made
* during a compile. There is no guarantee that individual alias changes are
* invoked in the order they occur during compilation, so implementations
* should not assume any relevance to the order changes arrive.
*
* Calls to the mutators are expected to resolve very quickly, so
* implementations should not perform expensive operations in the mutator
* methods.
*/
public interface AliasTransformationHandler {
/**
* Builds an AliasTransformation implementation and returns it to the
* caller.
*
* Callers are allowed to request multiple AliasTransformation instances for
* the same file, though it is expected that the first and last char values
* for multiple instances will not overlap.
*
* This method is expected to have a side-effect of storing off the created
* AliasTransformation, which guarantees that invokers of this interface
* cannot leak AliasTransformation to this implementation that the
* implementor did not create
*
* @param sourceFile the source file the aliases re contained in.
* @param position the region of the source file associated with the
* goog.scope call. The item of the SourcePosition is the returned
* AliasTransformation
*/
public AliasTransformation logAliasTransformation(
String sourceFile, SourcePosition position);
}
/**
* A Role Specific Interface for the JS Compiler to report aliases used to
* change the code during a compile.
*
* While aliases defined by goog.scope are expected to by only 1 per file, and
* the only top-level structure in the file, this is not enforced.
*/
public interface AliasTransformation {
/**
* Adds an alias definition to the AliasTransformation instance.
*
* Last definition for a given alias is kept if an alias is inserted
* multiple times (since this is generally the behavior in JavaScript code).
*
* @param alias the name of the alias.
* @param definition the definition of the alias.
*/
void addAlias(String alias, String definition);
}
/**
* A Null implementation of the CodeChanges interface which performs all
* operations as a No-Op
*/
static final AliasTransformationHandler NULL_ALIAS_TRANSFORMATION_HANDLER =
new NullAliasTransformationHandler();
private static class NullAliasTransformationHandler implements AliasTransformationHandler {
private static final AliasTransformation NULL_ALIAS_TRANSFORMATION =
new NullAliasTransformation();
@Override
public AliasTransformation logAliasTransformation(
String sourceFile, SourcePosition position) {
position.setItem(NULL_ALIAS_TRANSFORMATION);
return NULL_ALIAS_TRANSFORMATION;
}
private static class NullAliasTransformation implements AliasTransformation {
@Override
public void addAlias(String alias, String definition) {
}
}
}
/**
* An environment specifies the built-in externs that are loaded for a given
* compilation.
*/
public static enum Environment {
/**
* Hand crafted externs that have traditionally been the default externs.
*/
BROWSER,
/**
* Only language externs are loaded.
*/
CUSTOM
}
/**
* Whether standard input or standard output should be an array of
* JSON encoded files
*/
static enum JsonStreamMode {
/**
* stdin/out are both single files.
*/
NONE,
/**
* stdin is a json stream.
*/
IN,
/**
* stdout is a json stream.
*/
OUT,
/**
* stdin and stdout are both json streams.
*/
BOTH
}
/**
* A mode enum used to indicate whether J2clPass should be enabled, disabled, or enabled
* automatically if there is any J2cl source file (i.e. in the AUTO mode).
*/
public static enum J2clPassMode {
/** J2clPass is disabled. */
OFF,
/** It auto-detects whether there are J2cl generated file. If yes, execute J2clPass. */
AUTO;
boolean shouldAddJ2clPasses() {
return this == AUTO;
}
}
public boolean expectStrictModeInput() {
return isStrictModeInput.or(getLanguageIn().isDefaultStrict());
}
public CompilerOptions setStrictModeInput(boolean isStrictModeInput) {
this.isStrictModeInput = Optional.of(isStrictModeInput);
return this;
}
public char[] getPropertyReservedNamingFirstChars() {
char[] reservedChars = anonymousFunctionNaming.getReservedCharacters();
if (polymerVersion != null && polymerVersion > 1) {
if (reservedChars == null) {
reservedChars = POLYMER_PROPERTY_RESERVED_FIRST_CHARS;
} else {
reservedChars = Chars.concat(reservedChars, POLYMER_PROPERTY_RESERVED_FIRST_CHARS);
}
} else if (angularPass) {
if (reservedChars == null) {
reservedChars = ANGULAR_PROPERTY_RESERVED_FIRST_CHARS;
} else {
reservedChars = Chars.concat(reservedChars, ANGULAR_PROPERTY_RESERVED_FIRST_CHARS);
}
}
return reservedChars;
}
public char[] getPropertyReservedNamingNonFirstChars() {
char[] reservedChars = anonymousFunctionNaming.getReservedCharacters();
if (polymerVersion != null && polymerVersion > 1) {
if (reservedChars == null) {
reservedChars = POLYMER_PROPERTY_RESERVED_NON_FIRST_CHARS;
} else {
reservedChars = Chars.concat(reservedChars, POLYMER_PROPERTY_RESERVED_NON_FIRST_CHARS);
}
}
return reservedChars;
}
@GwtIncompatible("ObjectOutputStream")
private void writeObject(ObjectOutputStream out) throws IOException, ClassNotFoundException {
out.defaultWriteObject();
out.writeObject(outputCharset == null ? null : outputCharset.name());
}
@GwtIncompatible("ObjectInputStream")
private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
in.defaultReadObject();
String outputCharsetName = (String) in.readObject();
if (outputCharsetName != null) {
outputCharset = Charset.forName(outputCharsetName);
}
}
boolean shouldOptimize() {
return !skipNonTranspilationPasses
&& !checksOnly
&& !shouldGenerateTypedExterns()
&& !instrumentForCoverageOnly;
}
}