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open-autonomous-connection:master open-autonomous-connection:dependabot/maven/examples/maven/junit-junit-4.13.1
open-autonomous-connection:v3.0.2 open-autonomous-connection:v3.0.1
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compare: open-autonomous-connection:asiekierka/master
Branches Tags
open-autonomous-connection:master open-autonomous-connection:dependabot/maven/examples/maven/junit-junit-4.13.1
open-autonomous-connection:v3.0.2 open-autonomous-connection:v3.0.1

61 Commits
master ... asiekierka

Author SHA1 Message Date
Adrian Siekierka
ac261965a8 fix compilation, tests 2022-09-04 02:06:08 +02:00
Adrian Siekierka
342d940b5e Merge remote-tracking branch 'farmboy0/master' 2022-09-04 02:01:30 +02:00
Adrian Siekierka
a3507cf771 Merge remote-tracking branch 'src/master' 2022-09-04 01:43:37 +02:00
Enrico Horn
0775cc6c59 Create sources jars during the build 2021-07-23 17:47:14 +02:00
Enrico Horn
f87e3726a4 Update build information in the README 2021-07-22 23:27:14 +02:00
Enrico Horn
a4d95841e4 Create coverage report during the build 2021-07-22 23:23:34 +02:00
Enrico Horn
c8c2c29d62 Remove ant build files 2021-07-22 22:51:02 +02:00
Enrico Horn
67962d4cc3 Deactivate a few more compatibility tests for now 2021-07-22 22:46:58 +02:00
Enrico Horn
9a65948e26 Rework and complete OsLib's date formatting 2021-07-22 22:46:58 +02:00
Enrico Horn
66130964c6 Convert mathlib.modf result to number 2021-07-22 22:29:09 +02:00
Enrico Horn
abe14ca995 Disable debuglib tests for now 
Too many failing tests that need to be fixed first
 2021-07-22 22:29:09 +02:00
Enrico Horn
30a3a472bc Luajit crashes when closing a closed file 2021-07-22 22:29:08 +02:00
Enrico Horn
e87d9ceee4 Disabled a few more tests for now 2021-07-22 22:29:07 +02:00
Enrico Horn
3e9ae5c524 Luajit doesnt implement table.unpack in the current stable version 2021-07-22 22:29:03 +02:00
Enrico Horn
ddba10c180 Bring debuglib.getlocal Implementation closer to native 2021-07-22 22:29:02 +02:00
Enrico Horn
39e9be0a2d Deactivate a debuglib.getlocal error test for now 2021-07-22 22:29:02 +02:00
Enrico Horn
b1322640ca Always initialize a CallFrame's stack 2021-07-22 22:29:01 +02:00
Enrico Horn
99bd46876e Report errors about closures as function expected 2021-07-22 22:29:01 +02:00
Enrico Horn
23ae7cdc06 Fix order of argument checks in debug.upvaluejoin 2021-07-22 22:29:00 +02:00
Enrico Horn
942dc4afa3 More debug.upvaluejoin error tests 2021-07-22 22:29:00 +02:00
Enrico Horn
11ec746838 Fix order of argument checks in debug.upvalueid 2021-07-22 22:28:59 +02:00
Enrico Horn
b8b951b7c9 Fix order of argument checks in debug.setupvalue 2021-07-22 22:28:59 +02:00
Enrico Horn
1f9a874979 More setupvalue error tests 2021-07-22 22:28:58 +02:00
Enrico Horn
b121b65151 Handle rhs of zero for operation fmod 2021-07-22 00:06:12 +02:00
Enrico Horn
5851e6994a Lua also returns a negative NaN string 2021-07-22 00:06:12 +02:00
Enrico Horn
5984ec6097 Remove test files created during iolib tests 2021-07-22 00:06:12 +02:00
Enrico Horn
4802623aa3 Only check return type in xpcall pass tests 
The error message is more specific with luaj
 2021-07-22 00:06:11 +02:00
Enrico Horn
2fdcf5e2ac Disable string.dump pass checks for now 2021-07-22 00:06:11 +02:00
Enrico Horn
560a4694e4 Fix string.gsub behaviour with negative n 2021-07-22 00:06:11 +02:00
Enrico Horn
6b9dece367 Fix mathlib min, max and atan2 behaviour 2021-07-22 00:06:11 +02:00
Enrico Horn
179062493d Implement package.seeall 2021-07-22 00:06:11 +02:00
Enrico Horn
f81bc1e174 Make some errors compatible with native lua 2021-07-22 00:06:11 +02:00
Enrico Horn
bf23883492 Define clean up steps and clean up code 2021-07-22 00:06:11 +02:00
Enrico Horn
5465eff841 Update test result files in a platform dependant manner from native lua 2021-07-22 00:06:11 +02:00
Enrico Horn
ddc7531845 Remove invalid lua5.2 OOB calls from tablelib.lua 2021-07-22 00:06:11 +02:00
Enrico Horn
58a4dec882 Update errors tests for lua 5.2 2021-07-22 00:06:11 +02:00
Enrico Horn
f91cc9a509 Scripts to create result files from native lua 2021-07-22 00:06:11 +02:00
Enrico Horn
9792fcb018 Cleanup Tests with JUnit5 and move to different modules 2021-07-11 23:13:57 +02:00
Enrico Horn
1a6de4a227 Remove temprory test files and ignore them 2021-07-11 23:00:02 +02:00
Enrico Horn
1833c57d4d Extract luaj3.0-tests.zip to luaj-test/src/test/resources and delete it 2021-07-11 22:59:08 +02:00
Enrico Horn
e7e6190f9c Add formatter definition and format code 2021-07-03 22:23:49 +02:00
Enrico Horn
3c266bcc98 Move Lua5x.jj to lua-jse and customize package name 2021-07-03 22:19:30 +02:00
Enrico Horn
d2a92c07d3 Convert all line endings to Unix 2021-07-03 22:15:19 +02:00
Enrico Horn
a58147ddfa Move sources into maven modules 2021-03-11 22:07:08 +01:00
Enrico Horn
74e5ef6f36 Ignore eclipse project files 2021-03-07 01:39:37 +01:00
Enrico Horn
a9d475bbbf Remove eclipse project files 2021-03-05 21:26:41 +01:00
asie
a071b04b8f remove undesirable import 2019-09-03 08:33:28 +02:00
asie
11b29f92c1 fix string.format not converting non-strings for %s (requires __tostring fix) 2019-08-11 13:47:25 +02:00
gamax92
c666a507ab Support 4 byte UTF-8 sequences 
Fixes lengthAsUtf8, encodeToUtf8, and isValidUtf8 to support UTF-8's
4-byte sequences or UTF-16's surrogate pairs properly.
Invalid surrogate pairs are converted to '?' as Java's converter does
 2019-08-11 13:05:54 +02:00
gamax92
5026b5ac1e string.format fixes 
Fix string.format's floating point implementation

Disable space if explicitPlus is set
Disable leftAdjust and zeroPad if no width is specified
precision gets set to zero if only a dot is specified

Add support for %a/A, Lua can use these and Java happens to support it
 2019-08-11 12:50:29 +02:00
asie
6ba28727d2 move doubleToRawLongBits (not present on JME) to JSE class 2019-08-11 12:49:56 +02:00
gamax92
0707e71c6c Support __pairs and __ipairs 
Added PAIRS and IPAIRS constants to LuaValue
Merged pairs and ipairs into one class with a dynamic constructor, this
is similar to Lua's pairsmeta function.
Check for and call it's specific metamethod if it's available.
 2019-08-11 12:14:21 +02:00
gamax92
43f937470f Fix classes based on LibFunction giving "value" for their error message. 2019-08-11 12:11:40 +02:00
gamax92
5d3f2eb72c LuaClosure: Add the colon after line numbers to error messages 2019-08-11 12:11:31 +02:00
gamax92
244eb4b1a1 StringLib: Support seperators in string.rep 2019-08-11 12:07:47 +02:00
gamax92
626664a0fe BaseLib: fix handling of __tostring 2019-08-11 12:05:48 +02:00
gamax92
2bccb4670e LuaValue: add 0x to tojstring() to match Lua 2019-08-11 12:01:51 +02:00
gamax92
89acb5bcb5 LuaString: port strx2number for accurate double scanning, handle plus signs when converting strings to numbers 2019-08-11 11:59:49 +02:00
gamax92
c69585332b LexState: rename TK_EOS and <eos> to TK_EOF and <eof> to match Lua 2019-08-11 11:55:42 +02:00
gamax92
c9fa0f27c7 LuaValue, FuncState: correct error messages to match Lua 2019-08-11 11:50:42 +02:00
asie
af4cfe5e00 LuaDouble: handle negative zero, negative NaN 2019-08-11 11:47:51 +02:00
821 changed files with 60512 additions and 31315 deletions
Expand all files Collapse all files

17
.gitignore vendored
View File

@@ -1,15 +1,4 @@
bin/
target/ target/
build/ .classpath
lib/ .project
jit/ .settings/
*.ser
*.gz
*.jar
*.lua
*.out
*.tar
*.txt
*.zip
docs
*.0

138
.ide/cleanup.xml Normal file
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@@ -0,0 +1,138 @@
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390
.ide/formatter.xml Normal file
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@@ -0,0 +1,390 @@
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<setting id="org.eclipse.jdt.core.formatter.brace_position_for_type_declaration" value="end_of_line"/>
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<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_enum_constant" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_explicitconstructorcall_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_annotation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_enum_constant_header" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_constructor_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_constructor_declaration_throws" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_type_parameters" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_question_in_conditional" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.indent_parameter_description" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_code_block" value="0"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_finally_in_try_statement" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.tabulation.char" value="tab"/>
<setting id="org.eclipse.jdt.core.formatter.wrap_before_string_concatenation" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.lineSplit" value="120"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_annotation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_switch" value="insert"/>
</profile>
</profiles>

10
.idea/.gitignore generated vendored
View File

@@ -1,10 +0,0 @@
# Default ignored files
/shelf/
/workspace.xml
# Ignored default folder with query files
/queries/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml
# Editor-based HTTP Client requests
/httpRequests/

16
.idea/compiler.xml generated
View File

@@ -1,16 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="CompilerConfiguration">
<annotationProcessing>
<profile name="Maven default annotation processors profile" enabled="true">
<sourceOutputDir name="target/generated-sources/annotations" />
<sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
<outputRelativeToContentRoot value="true" />
<module name="core" />
<module name="jme" />
<module name="jse" />
<module name="maven-example" />
</profile>
</annotationProcessing>
</component>
</project>

7
.idea/discord.xml generated
View File

@@ -1,7 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="DiscordProjectSettings">
<option name="show" value="PROJECT_FILES" />
<option name="description" value="" />
</component>
</project>

13
.idea/encodings.xml generated
View File

@@ -1,13 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Encoding">
<file url="file://$PROJECT_DIR$/core/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/core/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/jme/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/jme/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/jse/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/jse/src/main/resources" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
<file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
</component>
</project>

25
.idea/jarRepositories.xml generated
View File

@@ -1,25 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="RemoteRepositoriesConfiguration">
<remote-repository>
<option name="id" value="central" />
<option name="name" value="Central Repository" />
<option name="url" value="https://repo.maven.apache.org/maven2" />
</remote-repository>
<remote-repository>
<option name="id" value="oac" />
<option name="name" value="oac" />
<option name="url" value="https://repo.open-autonomous-connection.org/api/packages/open-autonomous-connection/maven" />
</remote-repository>
<remote-repository>
<option name="id" value="central" />
<option name="name" value="Maven Central repository" />
<option name="url" value="https://repo1.maven.org/maven2" />
</remote-repository>
<remote-repository>
<option name="id" value="jboss.community" />
<option name="name" value="JBoss Community repository" />
<option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
</remote-repository>
</component>
</project>

9
.idea/luaj.iml generated
View File

@@ -1,9 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$" />
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

18
.idea/misc.xml generated
View File

@@ -1,18 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ExternalStorageConfigurationManager" enabled="true" />
<component name="MavenProjectsManager">
<option name="originalFiles">
<list>
<option value="$PROJECT_DIR$/examples/maven/pom.xml" />
<option value="$PROJECT_DIR$/core/pom.xml" />
<option value="$PROJECT_DIR$/jme/pom.xml" />
<option value="$PROJECT_DIR$/jse/pom.xml" />
<option value="$PROJECT_DIR$/pom.xml" />
</list>
</option>
</component>
<component name="ProjectRootManager" version="2" project-jdk-name="25" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
</project>

6
.idea/vcs.xml generated
View File

@@ -1,6 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="" vcs="Git" />
</component>
</project>

75
README.md
View File

@@ -1,12 +1,6 @@
# This is a fork! # This is a fork!
<div style="border: 1px dotted red; margin: 1.em 0.5em; font-weight: bold; color: red;"> <div style="border: 1px dotted red; margin: 1.em 0.5em; font-weight: bold; color: red;">
This repository has been forked from https://github.com/luaj/luaj.<br /> This repository has been forked from the original CVS sources of Luaj.
The commit history has been converted to make sure that the original work of
James Roseborough and Ian Farmer and fork work of luaj/luaj is not lost.
</div>
<h3>Original repository fork notice:</h3>
<div style="border: 1px dotted red; margin: 1.em 0.5em; font-weight: bold; color: red;">
The original repository has been forked from the original CVS sources of Luaj.
The commit history has been converted to make sure that the original work of The commit history has been converted to make sure that the original work of
James Roseborough and Ian Farmer is not lost. James Roseborough and Ian Farmer is not lost.
Unfortunately, I was not able to contact either James or Ian to hand over Unfortunately, I was not able to contact either James or Ian to hand over
@@ -254,7 +248,7 @@ A simple hello, world example in luaj is:
<pre> <pre>
import org.luaj.vm2.*; import org.luaj.vm2.*;
import org.luaj.vm2.libs.jse.*; import org.luaj.vm2.lib.jse.*;
Globals globals = JsePlatform.standardGlobals(); Globals globals = JsePlatform.standardGlobals();
LuaValue chunk = globals.load("print 'hello, world'"); LuaValue chunk = globals.load("print 'hello, world'");
@@ -296,7 +290,7 @@ For MIDlets the <em>JmePlatform</em> is used instead:
<pre> <pre>
import org.luaj.vm2.*; import org.luaj.vm2.*;
import org.luaj.vm2.libs.jme.*; import org.luaj.vm2.lib.jme.*;
Globals globals = JmePlatform.standardGlobals(); Globals globals = JmePlatform.standardGlobals();
LuaValue chunk = globals.loadfile("examples/lua/hello.lua"); LuaValue chunk = globals.loadfile("examples/lua/hello.lua");
@@ -317,6 +311,10 @@ A simple example may be found in
You must include the library <b>luaj-jme-3.0.2.jar</b> in your midlet jar. You must include the library <b>luaj-jme-3.0.2.jar</b> in your midlet jar.
<p> <p>
An ant script to build and run the midlet is in
<pre>
<a href="build-midlet.xml">build-midlet.xml</a>
</pre>
<p> <p>
You must install the wireless toolkit and define <em>WTK_HOME</em> for this script to work. You must install the wireless toolkit and define <em>WTK_HOME</em> for this script to work.
@@ -424,6 +422,7 @@ Applets in browsers should use the JsePlatform. The permissions model in applet
highly restrictive, so a specialization of the <a href="#luajava">Luajava</a> library must be used that highly restrictive, so a specialization of the <a href="#luajava">Luajava</a> library must be used that
uses default class loading. This is illustrated in the sample Applet uses default class loading. This is illustrated in the sample Applet
<a href="examples/jse/SampleApplet.java">examples/jse/SampleApplet.java</a>, <a href="examples/jse/SampleApplet.java">examples/jse/SampleApplet.java</a>,
which can be built using <a href="build-applet.xml">build-applet.xml</a>.
<h3>JmePlatform</h3> <h3>JmePlatform</h3>
@@ -442,6 +441,7 @@ In particular Globals.finder is overridden to load as resources, so scripts shou
colocated with class files in the MIDlet jar file. <a href="#luajava">Luajava</a> cannot be used. colocated with class files in the MIDlet jar file. <a href="#luajava">Luajava</a> cannot be used.
Camples code is in Camples code is in
<a href="examples/jme/SampleMIDlet.java">examples/jme/SampleMIDlet.java</a>, <a href="examples/jme/SampleMIDlet.java">examples/jme/SampleMIDlet.java</a>,
which can be built using <a href="build-midlet.xml">build-midlet.xml</a>.
<h2>Thread Safety</h2> <h2>Thread Safety</h2>
@@ -566,7 +566,7 @@ create globals that contain the debug library in addition to the other standard
To install dynamically from lua use java-class-based require:</em>: To install dynamically from lua use java-class-based require:</em>:
<pre> <pre>
require 'org.luaj.vm2.libs.DebugLib' require 'org.luaj.vm2.lib.DebugLib'
</pre> </pre>
The <em>lua</em> command line utility includes the <em>debug</em> library by default. The <em>lua</em> command line utility includes the <em>debug</em> library by default.
@@ -666,11 +666,11 @@ The simplest way to implement a function is to choose a base class based on the
LuaJ provides 5 base classes for this purpose, depending if the function has 0, 1, 2, 3 or variable arguments, LuaJ provides 5 base classes for this purpose, depending if the function has 0, 1, 2, 3 or variable arguments,
and if it provide multiple return values. and if it provide multiple return values.
<pre> <pre>
<a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/ZeroArgFunction.html">org.luaj.vm2.libs.ZeroArgFunction</a> <a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/ZeroArgFunction.html">org.luaj.vm2.lib.ZeroArgFunction</a>
<a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/OneArgFunction.html">org.luaj.vm2.libs.OneArgFunction</a> <a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/OneArgFunction.html">org.luaj.vm2.lib.OneArgFunction</a>
<a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/TwoArgFunction.html">org.luaj.vm2.libs.TwoArgFunction</a> <a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/TwoArgFunction.html">org.luaj.vm2.lib.TwoArgFunction</a>
<a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/ThreeArgFunction.html">org.luaj.vm2.libs.ThreeArgFunction</a> <a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/ThreeArgFunction.html">org.luaj.vm2.lib.ThreeArgFunction</a>
<a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/VarArgFunction.html">org.luaj.vm2.libs.VarArgFunction</a> <a href="http://luaj.org/luaj/3.0/api/org/luaj/vm2/lib/VarArgFunction.html">org.luaj.vm2.lib.VarArgFunction</a>
</pre> </pre>
Each of these functions has an abstract method that must be implemented, Each of these functions has an abstract method that must be implemented,
@@ -724,7 +724,7 @@ in the environment that can be called from lua.
A complete example of Java code for a simple toy library is in <a href="examples/jse/hyperbolic.java">examples/jse/hyperbolic.java</a> A complete example of Java code for a simple toy library is in <a href="examples/jse/hyperbolic.java">examples/jse/hyperbolic.java</a>
<pre> <pre>
import org.luaj.vm2.LuaValue; import org.luaj.vm2.LuaValue;
import org.luaj.vm2.libs.*; import org.luaj.vm2.lib.*;
public class hyperbolic extends TwoArgFunction { public class hyperbolic extends TwoArgFunction {
@@ -858,33 +858,30 @@ An example skelton maven pom file for a skeleton project is in
<h2>Building the jars</h2> <h2>Building the jars</h2>
An ant file is included in the root directory which builds the libraries by default. Build the jars with maven.
<pre>
mvn clean verify
</pre>
<p> <p>
Other targets exist for creating distribution file an measuring code coverage of unit tests.
<h2>Unit tests</h2> <h2>Unit tests</h2>
<p> <p>
The main luaj JUnit tests are organized into a JUnit 3 suite: All unit tests are executed during the build.
<pre>
test/junit/org/luaj/vm2/AllTests.lua
</pre>
<p> <p>
Unit test scripts can be found in these locations Test scripts can be found in these locations
<pre> <pre>
test/lua/*.lua luaj-test/src/test/resources
test/lua/errors/*.lua
test/lua/perf/*.lua
test/lua/luaj3.0.2-tests.zip
</pre> </pre>
Executon is included in the build of luaj-test.
<h2>Code coverage</h2> <h2>Code coverage</h2>
<p> <p>
The maven build creates the coverage report in the luaj-test/target/site folder
It relies on the cobertura code coverage library. during the verify phase.
<h1>8 - <a name="8">Downloads</a></h1> <h1>8 - <a name="8">Downloads</a></h1>
@@ -941,6 +938,7 @@ and at <a href="http://luaj.sourceforge.net/api/2.0/index.html">http://luaj.sour
<li>Add explicit Globals object to manage global state, especially to imrpove thread safety </li> <li>Add explicit Globals object to manage global state, especially to imrpove thread safety </li>
<li>Drop support for lua source to java surce (lua2java) in favor of direct java bytecode output (luajc) </li> <li>Drop support for lua source to java surce (lua2java) in favor of direct java bytecode output (luajc) </li>
<li>Remove compatibility functions like table.getn(), table.maxn(), table.foreach(), and math.log10() </li> <li>Remove compatibility functions like table.getn(), table.maxn(), table.foreach(), and math.log10() </li>
<li>Add ability to create runnable jar file from lua script with sample build file build-app.xml </li>
<li>Supply environment as second argument to LibFunction when loading via require() </li> <li>Supply environment as second argument to LibFunction when loading via require() </li>
<li>Fix bug 3597515 memory leak due to string caching by simplifying caching logic.</li> <li>Fix bug 3597515 memory leak due to string caching by simplifying caching logic.</li>
<li>Fix bug 3565008 so that short substrings are backed by short arrays.</li> <li>Fix bug 3565008 so that short substrings are backed by short arrays.</li>
@@ -1023,10 +1021,7 @@ and at <a href="http://luaj.sourceforge.net/api/2.0/index.html">http://luaj.sour
<li>debug code may not be completely removed by some obfuscators <li>debug code may not be completely removed by some obfuscators
<li>tail calls are not tracked in debug information <li>tail calls are not tracked in debug information
<li>mixing different versions of luaj in the same java vm is not supported <li>mixing different versions of luaj in the same java vm is not supported
<li>LuaJ runs on the host VM garbage collector, so object lifetime, weak reference timing, and finalization behavior are not identical to native Lua
<li>the <code>__gc</code> metamethod is not supported as a reliable Lua finalization mechanism
<li>values associated with weak keys may linger longer than expected <li>values associated with weak keys may linger longer than expected
<li>cascading weak-table collection can require multiple host GC cycles
<li>behavior of luaj when a SecurityManager is used has not been fully characterized <li>behavior of luaj when a SecurityManager is used has not been fully characterized
<li>negative zero is treated as identical to integer value zero throughout luaj <li>negative zero is treated as identical to integer value zero throughout luaj
<li>lua compiled into java bytecode using luajc cannot use string.dump() or xpcall() <li>lua compiled into java bytecode using luajc cannot use string.dump() or xpcall()
@@ -1034,22 +1029,6 @@ and at <a href="http://luaj.sourceforge.net/api/2.0/index.html">http://luaj.sour
<li>shared metatables for string, bool, etc are shared across Globals instances in the same class loader <li>shared metatables for string, bool, etc are shared across Globals instances in the same class loader
<li>orphaned threads will not be collected unless garbage collection is run and sufficient time elapses <li>orphaned threads will not be collected unless garbage collection is run and sufficient time elapses
</ul> </ul>
<h3>Garbage Collection And Resources</h3>
LuaJ does not implement the same garbage collector semantics as native Lua. Garbage collection is delegated to the host JVM or CLDC runtime, so <code>collectgarbage()</code> is only a hint and should not be used as a resource-management primitive.
<p>
In particular:
<ul>
<li>Do not rely on garbage collection to close files, sockets, database handles, or other resources.
<li>Always call <code>close()</code> explicitly on files and iterators that own files.
<li><code>io.lines(filename)</code> opens a file implicitly. If iteration is abandoned early, that file may remain open until explicitly collected by the host runtime.
<li>Prefer <code>local f = assert(io.open(...))</code> together with <code>f:lines()</code> and an explicit <code>f:close()</code> when deterministic cleanup matters.
<li>For implicit line iterators that need deterministic early cleanup, use <code>io.linesx(filename)</code> and call <code>iterator:close()</code>.
<li><code>file:linesx()</code> provides the same closable iterator API for already-open files.
<li>On Windows, leaked file handles can prevent rename or delete operations until the process exits.
<li>On JME/CLDC, finalization support may be absent, so explicit close is mandatory.
</ul>
<p>
Short-lived locals may also remain reachable longer than expected because host stack/register reuse is implementation-dependent. If prompt reclamation matters, isolate temporary allocations in functions and clear large references explicitly instead of assuming block exit is enough.
<h3>File Character Encoding</h3> <h3>File Character Encoding</h3>
Source files can be considered encoded in UTF-8 or ISO-8859-1 and results should be as expected, Source files can be considered encoded in UTF-8 or ISO-8859-1 and results should be as expected,
with literal string contianing quoted characters compiling to the same byte sequences as the input. with literal string contianing quoted characters compiling to the same byte sequences as the input.

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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.openautonomousconnection.luaj</groupId>
<artifactId>parent</artifactId>
<version>3.0.2</version>
</parent>
<artifactId>core</artifactId>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<executions>
<execution>
<id>attach-sources</id>
<goals><goal>jar</goal></goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${maven.compiler.release}</source>
<target>${maven.compiler.release}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>

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/*******************************************************************************
* Copyright (c) 2009-2011 Luaj.org. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package org.luaj.vm2;
/**
* Constants for lua limits and opcodes.
* <p>
* This is a direct translation of C lua distribution header file constants
* for bytecode creation and processing.
*/
public class Lua {
/** version is supplied by ant build task */
public static final String _VERSION = "Lua 5.3";
/** use return values from previous op */
public static final int LUA_MULTRET = -1;
// from lopcodes.h
/*===========================================================================
We assume that instructions are unsigned numbers.
All instructions have an opcode in the first 6 bits.
Instructions can have the following fields:
`A' : 8 bits
`B' : 9 bits
`C' : 9 bits
`Bx' : 18 bits (`B' and `C' together)
`sBx' : signed Bx
A signed argument is represented in excess K; that is, the number
value is the unsigned value minus K. K is exactly the maximum value
for that argument (so that -max is represented by 0, and +max is
represented by 2*max), which is half the maximum for the corresponding
unsigned argument.
===========================================================================*/
/* basic instruction format */
public static final int iABC = 0;
public static final int iABx = 1;
public static final int iAsBx = 2;
public static final int iAx = 3;
/*
** size and position of opcode arguments.
*/
public static final int SIZE_C = 9;
public static final int SIZE_B = 9;
public static final int SIZE_Bx = (SIZE_C + SIZE_B);
public static final int SIZE_A = 8;
public static final int SIZE_Ax = (SIZE_C + SIZE_B + SIZE_A);
public static final int SIZE_OP = 6;
public static final int POS_OP = 0;
public static final int POS_A = (POS_OP + SIZE_OP);
public static final int POS_C = (POS_A + SIZE_A);
public static final int POS_B = (POS_C + SIZE_C);
public static final int POS_Bx = POS_C;
public static final int POS_Ax = POS_A;
public static final int MAX_OP = ((1<<SIZE_OP)-1);
public static final int MAXARG_A = ((1<<SIZE_A)-1);
public static final int MAXARG_B = ((1<<SIZE_B)-1);
public static final int MAXARG_C = ((1<<SIZE_C)-1);
public static final int MAXARG_Bx = ((1<<SIZE_Bx)-1);
public static final int MAXARG_sBx = (MAXARG_Bx>>1); /* `sBx' is signed */
public static final int MAXARG_Ax = ((1<<SIZE_Ax)-1);
public static final int MASK_OP = ((1<<SIZE_OP)-1)<<POS_OP;
public static final int MASK_A = ((1<<SIZE_A)-1)<<POS_A;
public static final int MASK_B = ((1<<SIZE_B)-1)<<POS_B;
public static final int MASK_C = ((1<<SIZE_C)-1)<<POS_C;
public static final int MASK_Bx = ((1<<SIZE_Bx)-1)<<POS_Bx;
public static final int MASK_Ax = ((1<<SIZE_Ax)-1)<<POS_Ax;
public static final int MASK_NOT_OP = ~MASK_OP;
public static final int MASK_NOT_A = ~MASK_A;
public static final int MASK_NOT_B = ~MASK_B;
public static final int MASK_NOT_C = ~MASK_C;
public static final int MASK_NOT_Bx = ~MASK_Bx;
/*
** the following macros help to manipulate instructions
*/
public static int GET_OPCODE(int i) {
return (i >> POS_OP) & MAX_OP;
}
public static int GETARG_A(int i) {
return (i >> POS_A) & MAXARG_A;
}
public static int GETARG_Ax(int i) {
return (i >> POS_Ax) & MAXARG_Ax;
}
public static int GETARG_B(int i) {
return (i >> POS_B) & MAXARG_B;
}
public static int GETARG_C(int i) {
return (i >> POS_C) & MAXARG_C;
}
public static int GETARG_Bx(int i) {
return (i >> POS_Bx) & MAXARG_Bx;
}
public static int GETARG_sBx(int i) {
return ((i >> POS_Bx) & MAXARG_Bx) - MAXARG_sBx;
}
/*
** Macros to operate RK indices
*/
/** this bit 1 means constant (0 means register) */
public static final int BITRK = (1 << (SIZE_B - 1));
/** test whether value is a constant */
public static boolean ISK(int x) {
return 0 != ((x) & BITRK);
}
/** gets the index of the constant */
public static int INDEXK(int r) {
return ((int)(r) & ~BITRK);
}
public static final int MAXINDEXRK = (BITRK - 1);
/** code a constant index as a RK value */
public static int RKASK(int x) {
return ((x) | BITRK);
}
/**
** invalid register that fits in 8 bits
*/
public static final int NO_REG = MAXARG_A;
/*
** R(x) - register
** Kst(x) - constant (in constant table)
** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x)
*/
/*
** grep "ORDER OP" if you change these enums
*/
/*----------------------------------------------------------------------
name args description
------------------------------------------------------------------------*/
public static final int OP_MOVE = 0;/* A B R(A) := R(B) */
public static final int OP_LOADK = 1;/* A Bx R(A) := Kst(Bx) */
public static final int OP_LOADKX = 2;/* A R(A) := Kst(extra arg) */
public static final int OP_LOADBOOL = 3;/* A B C R(A) := (Bool)B; if (C) pc++ */
public static final int OP_LOADNIL = 4; /* A B R(A) := ... := R(A+B) := nil */
public static final int OP_GETUPVAL = 5; /* A B R(A) := UpValue[B] */
public static final int OP_GETTABUP = 6; /* A B C R(A) := UpValue[B][RK(C)] */
public static final int OP_GETTABLE = 7; /* A B C R(A) := R(B)[RK(C)] */
public static final int OP_SETTABUP = 8; /* A B C UpValue[A][RK(B)] := RK(C) */
public static final int OP_SETUPVAL = 9; /* A B UpValue[B] := R(A) */
public static final int OP_SETTABLE = 10; /* A B C R(A)[RK(B)] := RK(C) */
public static final int OP_NEWTABLE = 11; /* A B C R(A) := {} (size = B,C) */
public static final int OP_SELF = 12; /* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */
public static final int OP_ADD = 13; /* A B C R(A) := RK(B) + RK(C) */
public static final int OP_SUB = 14; /* A B C R(A) := RK(B) - RK(C) */
public static final int OP_MUL = 15; /* A B C R(A) := RK(B) * RK(C) */
public static final int OP_DIV = 16; /* A B C R(A) := RK(B) / RK(C) */
public static final int OP_IDIV = 17; /* A B C R(A) := RK(B) // RK(C) */
public static final int OP_BAND = 18; /* A B C R(A) := RK(B) & RK(C) */
public static final int OP_BOR = 19; /* A B C R(A) := RK(B) | RK(C) */
public static final int OP_BXOR = 20; /* A B C R(A) := RK(B) ~ RK(C) */
public static final int OP_SHL = 21; /* A B C R(A) := RK(B) << RK(C) */
public static final int OP_SHR = 22; /* A B C R(A) := RK(B) >> RK(C) */
public static final int OP_MOD = 23; /* A B C R(A) := RK(B) % RK(C) */
public static final int OP_POW = 24; /* A B C R(A) := RK(B) ^ RK(C) */
public static final int OP_UNM = 25; /* A B R(A) := -R(B) */
public static final int OP_BNOT = 26; /* A B R(A) := ~R(B) */
public static final int OP_NOT = 27; /* A B R(A) := not R(B) */
public static final int OP_LEN = 28; /* A B R(A) := length of R(B) */
public static final int OP_CONCAT = 29; /* A B C R(A) := R(B).. ... ..R(C) */
public static final int OP_JMP = 30; /* A sBx pc+=sBx; if (A) close all upvalues >= R(A - 1) */
public static final int OP_EQ = 31; /* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */
public static final int OP_LT = 32; /* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */
public static final int OP_LE = 33; /* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */
public static final int OP_TEST = 34; /* A C if not (R(A) <=> C) then pc++ */
public static final int OP_TESTSET = 35; /* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */
public static final int OP_CALL = 36; /* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
public static final int OP_TAILCALL = 37; /* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
public static final int OP_RETURN = 38; /* A B return R(A), ... ,R(A+B-2) (see note) */
public static final int OP_FORLOOP = 39; /* A sBx R(A)+=R(A+2);
if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
public static final int OP_FORPREP = 40; /* A sBx R(A)-=R(A+2); pc+=sBx */
public static final int OP_TFORCALL = 41; /* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */
public static final int OP_TFORLOOP = 42; /* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx } */
public static final int OP_SETLIST = 43; /* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */
public static final int OP_CLOSURE = 44; /* A Bx R(A) := closure(KPROTO[Bx], R(A), ... ,R(A+n)) */
public static final int OP_VARARG = 45; /* A B R(A), R(A+1), ..., R(A+B-1) = vararg */
public static final int OP_EXTRAARG = 46; /* Ax extra (larger) argument for previous opcode */
public static final int NUM_OPCODES = OP_EXTRAARG + 1;
/* pseudo-opcodes used in parsing only. */
public static final int OP_GT = 63; // >
public static final int OP_GE = 62; // >=
public static final int OP_NEQ = 61; // ~=
public static final int OP_AND = 60; // and
public static final int OP_OR = 59; // or
/*===========================================================================
Notes:
(*) In OP_CALL, if (B == 0) then B = top. C is the number of returns - 1,
and can be 0: OP_CALL then sets `top' to last_result+1, so
next open instruction (OP_CALL, OP_RETURN, OP_SETLIST) may use `top'.
(*) In OP_VARARG, if (B == 0) then use actual number of varargs and
set top (like in OP_CALL with C == 0).
(*) In OP_RETURN, if (B == 0) then return up to `top'
(*) In OP_SETLIST, if (B == 0) then B = `top';
if (C == 0) then next `instruction' is real C
(*) For comparisons, A specifies what condition the test should accept
(true or false).
(*) All `skips' (pc++) assume that next instruction is a jump
===========================================================================*/
/*
** masks for instruction properties. The format is:
** bits 0-1: op mode
** bits 2-3: C arg mode
** bits 4-5: B arg mode
** bit 6: instruction set register A
** bit 7: operator is a test
*/
public static final int OpArgN = 0; /* argument is not used */
public static final int OpArgU = 1; /* argument is used */
public static final int OpArgR = 2; /* argument is a register or a jump offset */
public static final int OpArgK = 3; /* argument is a constant or register/constant */
public static final int[] luaP_opmodes = {
/* T A B C mode opcode */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iABC), /* OP_MOVE */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgN<<2) | (iABx), /* OP_LOADK */
(0<<7) | (1<<6) | (OpArgN<<4) | (OpArgN<<2) | (iABx), /* OP_LOADKX */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgU<<2) | (iABC), /* OP_LOADBOOL */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgN<<2) | (iABC), /* OP_LOADNIL */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgN<<2) | (iABC), /* OP_GETUPVAL */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgK<<2) | (iABC), /* OP_GETTABUP */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgK<<2) | (iABC), /* OP_GETTABLE */
(0<<7) | (0<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_SETTABUP */
(0<<7) | (0<<6) | (OpArgU<<4) | (OpArgN<<2) | (iABC), /* OP_SETUPVAL */
(0<<7) | (0<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_SETTABLE */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgU<<2) | (iABC), /* OP_NEWTABLE */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgK<<2) | (iABC), /* OP_SELF */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_ADD */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_SUB */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_MUL */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_DIV */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_IDIV */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_BAND */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_BOR */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_BXOR */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_SHL */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_SHR */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_MOD */
(0<<7) | (1<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_POW */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iABC), /* OP_UNM */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iABC), /* OP_BNOT */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iABC), /* OP_NOT */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iABC), /* OP_LEN */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgR<<2) | (iABC), /* OP_CONCAT */
(0<<7) | (0<<6) | (OpArgR<<4) | (OpArgN<<2) | (iAsBx), /* OP_JMP */
(1<<7) | (0<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_EQ */
(1<<7) | (0<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_LT */
(1<<7) | (0<<6) | (OpArgK<<4) | (OpArgK<<2) | (iABC), /* OP_LE */
(1<<7) | (0<<6) | (OpArgN<<4) | (OpArgU<<2) | (iABC), /* OP_TEST */
(1<<7) | (1<<6) | (OpArgR<<4) | (OpArgU<<2) | (iABC), /* OP_TESTSET */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgU<<2) | (iABC), /* OP_CALL */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgU<<2) | (iABC), /* OP_TAILCALL */
(0<<7) | (0<<6) | (OpArgU<<4) | (OpArgN<<2) | (iABC), /* OP_RETURN */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iAsBx), /* OP_FORLOOP */
(0<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iAsBx), /* OP_FORPREP */
(0<<7) | (0<<6) | (OpArgN<<4) | (OpArgU<<2) | (iABC), /* OP_TFORCALL */
(1<<7) | (1<<6) | (OpArgR<<4) | (OpArgN<<2) | (iAsBx), /* OP_TFORLOOP */
(0<<7) | (0<<6) | (OpArgU<<4) | (OpArgU<<2) | (iABC), /* OP_SETLIST */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgN<<2) | (iABx), /* OP_CLOSURE */
(0<<7) | (1<<6) | (OpArgU<<4) | (OpArgN<<2) | (iABC), /* OP_VARARG */
(0<<7) | (0<<6) | (OpArgU<<4) | (OpArgU<<2) | (iAx), /* OP_EXTRAARG */
};
public static int getOpMode(int m) {
return luaP_opmodes[m] & 3;
}
public static int getBMode(int m) {
return (luaP_opmodes[m] >> 4) & 3;
}
public static int getCMode(int m) {
return (luaP_opmodes[m] >> 2) & 3;
}
public static boolean testAMode(int m) {
return 0 != (luaP_opmodes[m] & (1 << 6));
}
public static boolean testTMode(int m) {
return 0 != (luaP_opmodes[m] & (1 << 7));
}
/* number of list items to accumulate before a SETLIST instruction */
public static final int LFIELDS_PER_FLUSH = 50;
private static final int MAXSRC = 80;
public static String chunkid( String source ) {
if ( source.startsWith("=") )
return source.substring(1);
String end = "";
if ( source.startsWith("@") ) {
source = source.substring(1);
} else {
source = "[string \""+source;
end = "\"]";
}
int n = source.length() + end.length();
if ( n > MAXSRC )
source = source.substring(0,MAXSRC-end.length()-3) + "...";
return source + end;
}
}

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/*******************************************************************************
* Copyright (c) 2009 Luaj.org. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package org.luaj.vm2;
import org.luaj.vm2.libs.DebugLib.CallFrame;
import java.util.ArrayList;
import java.util.List;
/**
* Extension of {@link LuaFunction} which executes lua bytecode.
* <p>
* A {@link LuaClosure} is a combination of a {@link Prototype}
* and a {@link LuaValue} to use as an environment for execution.
* Normally the {@link LuaValue} is a {@link Globals} in which case the environment
* will contain standard lua libraries.
*
* <p>
* There are three main ways {@link LuaClosure} instances are created:
* <ul>
* <li>Construct an instance using {@link #LuaClosure(Prototype, LuaValue)}</li>
* <li>Construct it indirectly by loading a chunk via {@link Globals#load(java.io.Reader, String)}
* <li>Execute the lua bytecode {@link Lua#OP_CLOSURE} as part of bytecode processing
* </ul>
* <p>
* To construct it directly, the {@link Prototype} is typically created via a compiler such as
* {@link org.luaj.vm2.compiler.LuaC}:
* <pre> {@code
* String script = "print( 'hello, world' )";
* InputStream is = new ByteArrayInputStream(script.getBytes());
* Prototype p = LuaC.instance.compile(is, "script");
* LuaValue globals = JsePlatform.standardGlobals();
* LuaClosure f = new LuaClosure(p, globals);
* f.call();
* }</pre>
* <p>
* To construct it indirectly, the {@link Globals#load(java.io.Reader, String)} method may be used:
* <pre> {@code
* Globals globals = JsePlatform.standardGlobals();
* LuaFunction f = globals.load(new StringReader(script), "script");
* LuaClosure c = f.checkclosure(); // This may fail if LuaJC is installed.
* c.call();
* }</pre>
* <p>
* In this example, the "checkclosure()" may fail if direct lua-to-java-bytecode
* compiling using LuaJC is installed, because no LuaClosure is created in that case
* and the value returned is a {@link LuaFunction} but not a {@link LuaClosure}.
* <p>
* Since a {@link LuaClosure} is a {@link LuaFunction} which is a {@link LuaValue},
* all the value operations can be used directly such as:
* <ul>
* <li>{@link LuaValue#call()}</li>
* <li>{@link LuaValue#call(LuaValue)}</li>
* <li>{@link LuaValue#invoke()}</li>
* <li>{@link LuaValue#invoke(Varargs)}</li>
* <li>{@link LuaValue#method(String)}</li>
* <li>{@link LuaValue#method(String,LuaValue)}</li>
* <li>{@link LuaValue#invokemethod(String)}</li>
* <li>{@link LuaValue#invokemethod(String,Varargs)}</li>
* <li> ...</li>
* </ul>
* @see LuaValue
* @see LuaFunction
* @see LuaValue#isclosure()
* @see LuaValue#checkclosure()
* @see LuaValue#optclosure(LuaClosure)
* @see LoadState
* @see Globals#compiler
*/
public class LuaClosure extends LuaFunction {
private static final UpValue[] NOUPVALUES = new UpValue[0];
public final Prototype p;
public UpValue[] upValues;
final Globals globals;
/** Create a closure around a Prototype with a specific environment.
* If the prototype has upvalues, the environment will be written into the first upvalue.
* @param p the Prototype to construct this Closure for.
* @param env the environment to associate with the closure.
*/
public LuaClosure(Prototype p, LuaValue env) {
this.p = p;
this.initupvalue1(env);
globals = env instanceof Globals? (Globals) env: null;
}
public void initupvalue1(LuaValue env) {
if (p.upvalues == null || p.upvalues.length == 0)
this.upValues = NOUPVALUES;
else {
this.upValues = new UpValue[p.upvalues.length];
this.upValues[0] = new UpValue(new LuaValue[] {env}, 0);
}
}
public boolean isclosure() {
return true;
}
public LuaClosure optclosure(LuaClosure defval) {
return this;
}
public LuaClosure checkclosure() {
return this;
}
public String tojstring() {
return "function: " + p.toString();
}
private List<LuaValue[]> stackPool = new ArrayList<>();
private LuaValue[] getNewStack() {
if (stackPool.isEmpty()) {
return getNewStackRaw();
} else {
return stackPool.remove(stackPool.size() - 1);
}
}
private LuaValue[] getNewStackRaw() {
int max = p.maxstacksize;
LuaValue[] stack = new LuaValue[max];
System.arraycopy(NILS, 0, stack, 0, max);
return stack;
}
private void releaseStack(LuaValue[] stack) {
System.arraycopy(NILS, 0, stack, 0, stack.length);
stackPool.add(stack);
}
public final LuaValue call() {
LuaValue[] stack = getNewStack();
LuaValue result = execute(stack,NONE).arg1();
releaseStack(stack);
return result;
}
public final LuaValue call(LuaValue arg) {
LuaValue[] stack = getNewStack();
LuaValue result;
switch ( p.numparams ) {
default:
stack[0]=arg;
result = execute(stack,NONE).arg1();
break;
case 0:
result = execute(stack,arg).arg1();
break;
}
releaseStack(stack);
return result;
}
public final LuaValue call(LuaValue arg1, LuaValue arg2) {
LuaValue[] stack = getNewStack();
LuaValue result;
switch ( p.numparams ) {
default:
stack[0]=arg1;
stack[1]=arg2;
result = execute(stack,NONE).arg1();
break;
case 1:
stack[0]=arg1;
result = execute(stack,arg2).arg1();
break;
case 0:
result = execute(stack,p.is_vararg!=0 ? varargsOf(arg1,arg2) : NONE).arg1();
break;
}
releaseStack(stack);
return result;
}
public final LuaValue call(LuaValue arg1, LuaValue arg2, LuaValue arg3) {
LuaValue[] stack = getNewStack();
LuaValue result;
switch ( p.numparams ) {
default:
stack[0]=arg1;
stack[1]=arg2;
stack[2]=arg3;
result = execute(stack,NONE).arg1();
break;
case 2:
stack[0]=arg1;
stack[1]=arg2;
result = execute(stack,arg3).arg1();
break;
case 1:
stack[0]=arg1;
result = execute(stack,p.is_vararg!=0 ? varargsOf(arg2,arg3) : NONE).arg1();
break;
case 0:
result = execute(stack,p.is_vararg!=0 ? varargsOf(arg1,arg2,arg3) : NONE).arg1();
break;
}
releaseStack(stack);
return result;
}
public final Varargs invoke(Varargs varargs) {
return onInvoke(varargs).eval();
}
public final Varargs onInvoke(Varargs varargs) {
LuaValue[] stack = getNewStack();
for ( int i=0; i<p.numparams; i++ )
stack[i] = varargs.arg(i+1);
Varargs result = execute(stack,p.is_vararg!=0 ? varargs.subargs(p.numparams+1) : NONE);
if (result instanceof LuaValue) {
releaseStack(stack);
}
return result;
}
protected Varargs execute( LuaValue[] stack, Varargs varargs ) {
// loop through instructions
int i,a,b,c,pc=0,top=0;
LuaValue o;
Varargs v = NONE;
int[] code = p.code;
LuaValue[] k = p.k;
// upvalues are only possible when closures create closures
// TODO: use linked list.
UpValue[] openups = p.p.length>0? new UpValue[stack.length]: null;
// allow for debug hooks
if (globals != null && globals.debuglib != null)
globals.debuglib.onCall( this, varargs, stack );
// process instructions
try {
for (; true; ++pc) {
if (Thread.currentThread().isInterrupted()) {
throw new LuaError("interrupted");
}
if (globals != null && globals.debuglib != null)
globals.debuglib.onInstruction( pc, v, top );
// pull out instruction
i = code[pc];
a = ((i>>6) & 0xff);
// process the op code
switch ( i & 0x3f ) {
case Lua.OP_MOVE:/* A B R(A):= R(B) */
stack[a] = stack[i>>>23];
continue;
case Lua.OP_LOADK:/* A Bx R(A):= Kst(Bx) */
stack[a] = k[i>>>14];
continue;
case Lua.OP_LOADKX:/* A R(A) := Kst(extra arg) */
++pc;
i = code[pc];
if ((i & 0x3f) != Lua.OP_EXTRAARG) {
int op = i & 0x3f;
throw new LuaError("OP_EXTRAARG expected after OP_LOADKX, got " +
(op < Print.OPNAMES.length - 1 ? Print.OPNAMES[op] : "UNKNOWN_OP_" + op));
}
stack[a] = k[i>>>6];
continue;
case Lua.OP_LOADBOOL:/* A B C R(A):= (Bool)B: if (C) pc++ */
stack[a] = (i>>>23!=0)? LuaValue.TRUE: LuaValue.FALSE;
if ((i&(0x1ff<<14)) != 0)
++pc; /* skip next instruction (if C) */
continue;
case Lua.OP_LOADNIL: /* A B R(A):= ...:= R(A+B):= nil */
for ( b=i>>>23; b-->=0; )
stack[a++] = LuaValue.NIL;
continue;
case Lua.OP_GETUPVAL: /* A B R(A):= UpValue[B] */
stack[a] = upValues[i>>>23].getValue();
continue;
case Lua.OP_GETTABUP: /* A B C R(A) := UpValue[B][RK(C)] */
stack[a] = upValues[i>>>23].getValue().get((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_GETTABLE: /* A B C R(A):= R(B)[RK(C)] */
stack[a] = stack[i>>>23].get((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_SETTABUP: /* A B C UpValue[A][RK(B)] := RK(C) */
upValues[a].getValue().set(((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]), (c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_SETUPVAL: /* A B UpValue[B]:= R(A) */
upValues[i>>>23].setValue(stack[a]);
continue;
case Lua.OP_SETTABLE: /* A B C R(A)[RK(B)]:= RK(C) */
stack[a].set(((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]), (c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_NEWTABLE: /* A B C R(A):= {} (size = B,C) */
stack[a] = new LuaTable(i>>>23,(i>>14)&0x1ff);
continue;
case Lua.OP_SELF: /* A B C R(A+1):= R(B): R(A):= R(B)[RK(C)] */
stack[a+1] = (o = stack[i>>>23]);
stack[a] = o.get((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_ADD: /* A B C R(A):= RK(B) + RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).add((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_SUB: /* A B C R(A):= RK(B) - RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).sub((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_MUL: /* A B C R(A):= RK(B) * RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).mul((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_DIV: /* A B C R(A):= RK(B) / RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).div((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_IDIV: /* A B C R(A):= RK(B) // RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).idiv((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_BAND: /* A B C R(A):= RK(B) & RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).band((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_BOR: /* A B C R(A):= RK(B) | RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).bor((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_BXOR: /* A B C R(A):= RK(B) ~ RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).bxor((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_SHL: /* A B C R(A):= RK(B) << RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).shl((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_SHR: /* A B C R(A):= RK(B) >> RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).shr((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_MOD: /* A B C R(A):= RK(B) % RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).mod((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_POW: /* A B C R(A):= RK(B) ^ RK(C) */
stack[a] = ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).pow((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]);
continue;
case Lua.OP_UNM: /* A B R(A):= -R(B) */
stack[a] = stack[i>>>23].neg();
continue;
case Lua.OP_BNOT: /* A B R(A):= ~R(B) */
stack[a] = stack[i>>>23].bnot();
continue;
case Lua.OP_NOT: /* A B R(A):= not R(B) */
stack[a] = stack[i>>>23].not();
continue;
case Lua.OP_LEN: /* A B R(A):= length of R(B) */
stack[a] = stack[i>>>23].len();
continue;
case Lua.OP_CONCAT: /* A B C R(A):= R(B).. ... ..R(C) */
b = i>>>23;
c = (i>>14)&0x1ff;
{
if ( c > b+1 ) {
Buffer sb = stack[c].buffer();
while ( --c>=b )
sb.concatTo(stack[c]);
stack[a] = sb.value();
} else {
stack[a] = stack[c-1].concat(stack[c]);
}
}
continue;
case Lua.OP_JMP: /* A sBx pc+=sBx; if (A) close all upvalues >= R(A - 1) */
pc += (i>>>14)-0x1ffff;
if (a > 0) {
for (--a, b = openups.length; --b>=0; )
if (openups[b] != null && openups[b].index >= a) {
openups[b].close();
openups[b] = null;
}
}
continue;
case Lua.OP_EQ: /* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */
if ( ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).eq_b((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]) != (a!=0) )
++pc;
continue;
case Lua.OP_LT: /* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */
if ( ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).lt_b((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]) != (a!=0) )
++pc;
continue;
case Lua.OP_LE: /* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */
if ( ((b=i>>>23)>0xff? k[b&0x0ff]: stack[b]).lteq_b((c=(i>>14)&0x1ff)>0xff? k[c&0x0ff]: stack[c]) != (a!=0) )
++pc;
continue;
case Lua.OP_TEST: /* A C if not (R(A) <=> C) then pc++ */
if ( stack[a].toboolean() != ((i&(0x1ff<<14))!=0) )
++pc;
continue;
case Lua.OP_TESTSET: /* A B C if (R(B) <=> C) then R(A):= R(B) else pc++ */
/* note: doc appears to be reversed */
if ( (o=stack[i>>>23]).toboolean() != ((i&(0x1ff<<14))!=0) )
++pc;
else
stack[a] = o; // TODO: should be sBx?
continue;
case Lua.OP_CALL: /* A B C R(A), ... ,R(A+C-2):= R(A)(R(A+1), ... ,R(A+B-1)) */
switch ( i & (Lua.MASK_B | Lua.MASK_C) ) {
case (1<<Lua.POS_B) | (0<<Lua.POS_C): v=stack[a].invoke(NONE); top=a+v.narg(); continue;
case (2<<Lua.POS_B) | (0<<Lua.POS_C): v=stack[a].invoke(stack[a+1]); top=a+v.narg(); continue;
case (1<<Lua.POS_B) | (1<<Lua.POS_C): stack[a].call(); continue;
case (2<<Lua.POS_B) | (1<<Lua.POS_C): stack[a].call(stack[a+1]); continue;
case (3<<Lua.POS_B) | (1<<Lua.POS_C): stack[a].call(stack[a+1],stack[a+2]); continue;
case (4<<Lua.POS_B) | (1<<Lua.POS_C): stack[a].call(stack[a+1],stack[a+2],stack[a+3]); continue;
case (1<<Lua.POS_B) | (2<<Lua.POS_C): stack[a] = stack[a].call(); continue;
case (2<<Lua.POS_B) | (2<<Lua.POS_C): stack[a] = stack[a].call(stack[a+1]); continue;
case (3<<Lua.POS_B) | (2<<Lua.POS_C): stack[a] = stack[a].call(stack[a+1],stack[a+2]); continue;
case (4<<Lua.POS_B) | (2<<Lua.POS_C): stack[a] = stack[a].call(stack[a+1],stack[a+2],stack[a+3]); continue;
default:
b = i>>>23;
c = (i>>14)&0x1ff;
v = stack[a].invoke(b>0?
varargsOf(stack, a+1, b-1): // exact arg count
varargsOf(stack, a+1, top-v.narg()-(a+1), v)); // from prev top
if ( c > 0 ) {
v.copyto(stack, a, c-1);
v = NONE;
} else {
top = a + v.narg();
v = v.dealias();
}
continue;
}
case Lua.OP_TAILCALL: /* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
switch ( i & Lua.MASK_B ) {
case (1<<Lua.POS_B): return new TailcallVarargs(stack[a], NONE);
case (2<<Lua.POS_B): return new TailcallVarargs(stack[a], stack[a+1]);
case (3<<Lua.POS_B): return new TailcallVarargs(stack[a], varargsOf(stack[a+1],stack[a+2]));
case (4<<Lua.POS_B): return new TailcallVarargs(stack[a], varargsOf(stack[a+1],stack[a+2],stack[a+3]));
default:
b = i>>>23;
v = b>0?
varargsOf(stack,a+1,b-1): // exact arg count
varargsOf(stack, a+1, top-v.narg()-(a+1), v); // from prev top
return new TailcallVarargs( stack[a], v );
}
case Lua.OP_RETURN: /* A B return R(A), ... ,R(A+B-2) (see note) */
b = i>>>23;
switch ( b ) {
case 0: return varargsOf(stack, a, top-v.narg()-a, v);
case 1: return NONE;
case 2: return stack[a];
default:
return varargsOf(stack, a, b-1);
}
case Lua.OP_FORLOOP: /* A sBx R(A)+=R(A+2): if R(A) <?= R(A+1) then { pc+=sBx: R(A+3)=R(A) }*/
{
LuaValue limit = stack[a + 1];
LuaValue step = stack[a + 2];
LuaValue idx = stack[a].add(step);
if (step.gt_b(0)? idx.lteq_b(limit): idx.gteq_b(limit)) {
stack[a] = idx;
stack[a + 3] = idx;
pc += (i>>>14)-0x1ffff;
}
}
continue;
case Lua.OP_FORPREP: /* A sBx R(A)-=R(A+2): pc+=sBx */
{
LuaValue init = stack[a].checknumber("'for' initial value must be a number");
LuaValue limit = stack[a + 1].checknumber("'for' limit must be a number");
LuaValue step = stack[a + 2].checknumber("'for' step must be a number");
stack[a] = init.sub(step);
stack[a + 1] = limit;
stack[a + 2] = step;
pc += (i>>>14)-0x1ffff;
}
continue;
case Lua.OP_TFORCALL: /* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */
v = stack[a].invoke(varargsOf(stack[a+1],stack[a+2]));
c = (i>>14) & 0x1ff;
while (--c >= 0)
stack[a+3+c] = v.arg(c+1);
v = NONE;
continue;
case Lua.OP_TFORLOOP: /* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx */
if (!stack[a+1].isnil()) { /* continue loop? */
stack[a] = stack[a+1]; /* save control varible. */
pc += (i>>>14)-0x1ffff;
}
continue;
case Lua.OP_SETLIST: /* A B C R(A)[(C-1)*FPF+i]:= R(A+i), 1 <= i <= B */
{
if ( (c=(i>>14)&0x1ff) == 0 )
c = code[++pc];
int offset = (c-1) * Lua.LFIELDS_PER_FLUSH;
o = stack[a];
if ( (b=i>>>23) == 0 ) {
b = top - a - 1;
int m = b - v.narg();
int j=1;
for ( ;j<=m; j++ )
o.set(offset+j, stack[a + j]);
for ( ;j<=b; j++ )
o.set(offset+j, v.arg(j-m));
} else {
o.presize( offset + b );
for (int j=1; j<=b; j++)
o.set(offset+j, stack[a + j]);
}
}
continue;
case Lua.OP_CLOSURE: /* A Bx R(A):= closure(KPROTO[Bx]) */
{
Prototype newp = p.p[i>>>14];
LuaClosure ncl = new LuaClosure(newp, globals);
Upvaldesc[] uv = newp.upvalues;
for ( int j=0, nup=uv.length; j<nup; ++j ) {
if (uv[j].instack) /* upvalue refes to local variable? */
ncl.upValues[j] = findupval(stack, uv[j].idx, openups);
else /* get upvalue from enclosing function */
ncl.upValues[j] = upValues[uv[j].idx];
}
stack[a] = ncl;
}
continue;
case Lua.OP_VARARG: /* A B R(A), R(A+1), ..., R(A+B-1) = vararg */
b = i>>>23;
if ( b == 0 ) {
top = a + (b = varargs.narg());
v = varargs;
} else {
for ( int j=1; j<b; ++j )
stack[a+j-1] = varargs.arg(j);
}
continue;
case Lua.OP_EXTRAARG:
throw new java.lang.IllegalArgumentException("Uexecutable opcode: OP_EXTRAARG");
default:
throw new java.lang.IllegalArgumentException("Illegal opcode: " + (i & 0x3f));
}
}
} catch ( LuaError le ) {
if (le.traceback == null)
processErrorHooks(le, p, pc);
throw le;
} catch ( Exception e ) {
LuaError le = new LuaError(e);
processErrorHooks(le, p, pc);
throw le;
} finally {
if ( openups != null )
for ( int u=openups.length; --u>=0; )
if ( openups[u] != null )
openups[u].close();
if (globals != null && globals.debuglib != null)
globals.debuglib.onReturn();
}
}
/**
* Run the error hook if there is one
* @param msg the message to use in error hook processing.
* */
LuaValue errorHook(LuaValue msgobj, String msg, int level) {
if (globals == null ) return LuaValue.valueOf(msg);
final LuaThread r = globals.running;
if (r.errorfunc == null)
return LuaValue.valueOf(globals.debuglib != null?
msg + "\n" + globals.debuglib.traceback(level):
msg);
final LuaValue e = r.errorfunc;
r.errorfunc = null;
try {
return e.call(msgobj != null ? msgobj : LuaValue.NIL);
} catch ( Throwable t ) {
return LuaValue.valueOf("error in error handling");
} finally {
r.errorfunc = e;
}
}
private void processErrorHooks(LuaError le, Prototype p, int pc) {
String file = "?";
int line = -1;
{
CallFrame frame = null;
if (globals != null && globals.debuglib != null) {
frame = globals.debuglib.getCallFrame(le.level);
if (frame != null) {
String src = frame.shortsource();
file = src != null ? src : "?";
line = frame.currentline();
}
}
if (frame == null) {
file = p.source != null? p.source.tojstring(): "?";
line = p.lineinfo != null && pc >= 0 && pc < p.lineinfo.length ? p.lineinfo[pc] : -1;
}
}
le.fileline = file + ":" + line;
LuaValue error = errorHook(le.getMessageObject(), le.getMessage(), le.level);
le.setMessageObject(error);
le.traceback = error != null ? error.tojstring() : null;
}
private UpValue findupval(LuaValue[] stack, short idx, UpValue[] openups) {
final int n = openups.length;
for (int i = 0; i < n; ++i)
if (openups[i] != null && openups[i].index == idx)
return openups[i];
for (int i = 0; i < n; ++i)
if (openups[i] == null)
return openups[i] = new UpValue(stack, idx);
error("No space for upvalue");
return null;
}
protected LuaValue getUpvalue(int i) {
return upValues[i].getValue();
}
protected void setUpvalue(int i, LuaValue v) {
upValues[i].setValue(v);
}
public String name() {
return "<"+p.shortsource()+":"+p.linedefined+">";
}
}

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/*******************************************************************************
* Copyright (c) 2009 Luaj.org. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package org.luaj.vm2;
import org.luaj.vm2.libs.MathLib;
/**
* Extension of {@link LuaNumber} which can hold a Java long as its value.
* <p>
* These instance are not instantiated directly by clients, but indirectly
* via the static functions {@link LuaValue#valueOf(int)} or {@link LuaValue#valueOf(double)}
* functions. This ensures that policies regarding pooling of instances are
* encapsulated.
* <p>
* There are no API's specific to LuaInteger that are useful beyond what is already
* exposed in {@link LuaValue}.
*
* @see LuaValue
* @see LuaNumber
* @see LuaDouble
* @see LuaValue#valueOf(int)
* @see LuaValue#valueOf(double)
*/
public class LuaInteger extends LuaNumber {
private static final LuaInteger[] intValues = new LuaInteger[512];
static {
for ( int i=0; i<512; i++ )
intValues[i] = new LuaInteger(i-256);
}
public static LuaInteger valueOf(int i) {
return i<=255 && i>=-256? intValues[i+256]: new LuaInteger(i);
};
// TODO consider moving this to LuaValue
/** Return a LuaNumber that represents the value provided
* @param l long value to represent.
* @return LuaNumber that is eithe LuaInteger or LuaDouble representing l
* @see LuaValue#valueOf(int)
* @see LuaValue#valueOf(double)
*/
public static LuaInteger valueOf(long l) {
int i = (int) l;
return l == i && i <= 255 && i >= -256 ? intValues[i+256] : new LuaInteger(l);
}
/** The value being held by this instance. */
public final long v;
/**
* Package protected constructor.
* @see LuaValue#valueOf(int)
**/
LuaInteger(long i) {
this.v = i;
}
public boolean isint() { return v == (int) v; }
public boolean isinttype() { return true; }
public boolean islong() { return true; }
public byte tobyte() { return (byte) v; }
public char tochar() { return (char) v; }
public double todouble() { return v; }
public float tofloat() { return v; }
public int toint() { return (int) v; }
public long tolong() { return v; }
public short toshort() { return (short) v; }
public double optdouble(double defval) { return v; }
public int optint(int defval) { return (int) v; }
public LuaInteger optinteger(LuaInteger defval) { return this; }
public long optlong(long defval) { return v; }
public String tojstring() {
return Long.toString(v);
}
public LuaString strvalue() {
return LuaString.valueOf(Long.toString(v));
}
public LuaString optstring(LuaString defval) {
return LuaString.valueOf(Long.toString(v));
}
public LuaValue tostring() {
return LuaString.valueOf(Long.toString(v));
}
public String optjstring(String defval) {
return Long.toString(v);
}
public LuaInteger checkinteger() {
return this;
}
public boolean isstring() {
return true;
}
public int hashCode() {
return hashCode(v);
}
public static int hashCode(long x) {
return (int) (x ^ (x >>> 32));
}
// unary operators
public LuaValue neg() { return valueOf(-(long)v); }
public LuaValue bnot() { return valueOf(~v); }
// object equality, used for key comparison
public boolean equals(Object o) { return o instanceof LuaInteger? ((LuaInteger)o).v == v: false; }
// equality w/ metatable processing
public LuaValue eq( LuaValue val ) { return val.raweq(v)? TRUE: FALSE; }
public boolean eq_b( LuaValue val ) { return val.raweq(v); }
// equality w/o metatable processing
public boolean raweq( LuaValue val ) { return val.raweq(v); }
public boolean raweq( double val ) { return v == val; }
public boolean raweq( int val ) { return v == val; }
public boolean raweq( long val ) { return v == val; }
// arithmetic operators
public LuaValue add( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.add(rhs): (n.isinttype()? LuaInteger.valueOf(v + n.tolong()): LuaDouble.valueOf(v + n.todouble())); }
public LuaValue add( double lhs ) { return LuaDouble.valueOf(lhs + v); }
public LuaValue add( int lhs ) { return LuaInteger.valueOf(lhs + v); }
public LuaValue sub( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.sub(rhs): (n.isinttype()? LuaInteger.valueOf(v - n.tolong()): LuaDouble.valueOf(v - n.todouble())); }
public LuaValue sub( double rhs ) { return LuaDouble.valueOf(v - rhs); }
public LuaValue sub( int rhs ) { return LuaInteger.valueOf(v - rhs); }
public LuaValue subFrom( double lhs ) { return LuaDouble.valueOf(lhs - v); }
public LuaValue subFrom( int lhs ) { return LuaInteger.valueOf(lhs - v); }
public LuaValue mul( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.mul(rhs): (n.isinttype()? LuaInteger.valueOf(v * n.tolong()): LuaDouble.valueOf(v * n.todouble())); }
public LuaValue mul( double lhs ) { return LuaDouble.valueOf(lhs * v); }
public LuaValue mul( int lhs ) { return LuaInteger.valueOf(lhs * v); }
public LuaValue pow( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.pow(rhs): MathLib.dpow(v, n.todouble()); }
public LuaValue pow( double rhs ) { return MathLib.dpow(v,rhs); }
public LuaValue pow( int rhs ) { return MathLib.dpow(v,rhs); }
public LuaValue powWith( double lhs ) { return MathLib.dpow(lhs,v); }
public LuaValue powWith( int lhs ) { return MathLib.dpow(lhs,v); }
public LuaValue div( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.div(rhs): LuaDouble.ddiv(v, n.todouble()); }
public LuaValue idiv( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.idiv(rhs): (n.isinttype()? LuaInteger.valueOf(luaFloorDiv(v, n.tolong())): LuaDouble.didiv(v, n.todouble())); }
public LuaValue div( double rhs ) { return LuaDouble.ddiv(v,rhs); }
public LuaValue div( int rhs ) { return LuaDouble.ddiv(v,rhs); }
public LuaValue divInto( double lhs ) { return LuaDouble.ddiv(lhs,v); }
public LuaValue idiv( double rhs ) { return LuaDouble.didiv(v,rhs); }
public LuaValue idiv( int rhs ) { return LuaInteger.valueOf(luaFloorDiv(v, rhs)); }
public LuaValue idivInto( double lhs ) { return LuaDouble.didiv(lhs,v); }
public LuaValue band( LuaValue rhs ) { LuaValue n = rhs.tonumber(); if (n.isnil()) return super.band(rhs); if (!n.islong()) throw bitwiseError(); return LuaInteger.valueOf(v & n.tolong()); }
public LuaValue bor( LuaValue rhs ) { LuaValue n = rhs.tonumber(); if (n.isnil()) return super.bor(rhs); if (!n.islong()) throw bitwiseError(); return LuaInteger.valueOf(v | n.tolong()); }
public LuaValue bxor( LuaValue rhs ) { LuaValue n = rhs.tonumber(); if (n.isnil()) return super.bxor(rhs); if (!n.islong()) throw bitwiseError(); return LuaInteger.valueOf(v ^ n.tolong()); }
public LuaValue shl( LuaValue rhs ) { LuaValue n = rhs.tonumber(); if (n.isnil()) return super.shl(rhs); if (!n.islong()) throw bitwiseError(); return LuaInteger.valueOf(luaShiftLeft(v, n.tolong())); }
public LuaValue shr( LuaValue rhs ) { LuaValue n = rhs.tonumber(); if (n.isnil()) return super.shr(rhs); if (!n.islong()) throw bitwiseError(); return LuaInteger.valueOf(luaShiftRight(v, n.tolong())); }
public LuaValue mod( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.mod(rhs): (n.isinttype()? LuaInteger.valueOf(luaFloorMod(v, n.tolong())): LuaDouble.dmod(v, n.todouble())); }
public LuaValue mod( double rhs ) { return LuaDouble.dmod(v,rhs); }
public LuaValue mod( int rhs ) { return LuaInteger.valueOf(luaFloorMod(v, rhs)); }
public LuaValue modFrom( double lhs ) { return LuaDouble.dmod(lhs,v); }
// relational operators
public LuaValue lt( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.lt(rhs): (n.isinttype()? (v < n.tolong()? TRUE: FALSE): (v < n.todouble()? TRUE: FALSE)); }
public LuaValue lt( double rhs ) { return v < rhs? TRUE: FALSE; }
public LuaValue lt( int rhs ) { return v < rhs? TRUE: FALSE; }
public boolean lt_b( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.lt_b(rhs): (n.isinttype()? v < n.tolong(): v < n.todouble()); }
public boolean lt_b( int rhs ) { return v < rhs; }
public boolean lt_b( double rhs ) { return v < rhs; }
public LuaValue lteq( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.lteq(rhs): (n.isinttype()? (v <= n.tolong()? TRUE: FALSE): (v <= n.todouble()? TRUE: FALSE)); }
public LuaValue lteq( double rhs ) { return v <= rhs? TRUE: FALSE; }
public LuaValue lteq( int rhs ) { return v <= rhs? TRUE: FALSE; }
public boolean lteq_b( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.lteq_b(rhs): (n.isinttype()? v <= n.tolong(): v <= n.todouble()); }
public boolean lteq_b( int rhs ) { return v <= rhs; }
public boolean lteq_b( double rhs ) { return v <= rhs; }
public LuaValue gt( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.gt(rhs): (n.isinttype()? (v > n.tolong()? TRUE: FALSE): (v > n.todouble()? TRUE: FALSE)); }
public LuaValue gt( double rhs ) { return v > rhs? TRUE: FALSE; }
public LuaValue gt( int rhs ) { return v > rhs? TRUE: FALSE; }
public boolean gt_b( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.gt_b(rhs): (n.isinttype()? v > n.tolong(): v > n.todouble()); }
public boolean gt_b( int rhs ) { return v > rhs; }
public boolean gt_b( double rhs ) { return v > rhs; }
public LuaValue gteq( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.gteq(rhs): (n.isinttype()? (v >= n.tolong()? TRUE: FALSE): (v >= n.todouble()? TRUE: FALSE)); }
public LuaValue gteq( double rhs ) { return v >= rhs? TRUE: FALSE; }
public LuaValue gteq( int rhs ) { return v >= rhs? TRUE: FALSE; }
public boolean gteq_b( LuaValue rhs ) { LuaValue n = rhs.tonumber(); return n.isnil()? super.gteq_b(rhs): (n.isinttype()? v >= n.tolong(): v >= n.todouble()); }
public boolean gteq_b( int rhs ) { return v >= rhs; }
public boolean gteq_b( double rhs ) { return v >= rhs; }
// string comparison
public int strcmp( LuaString rhs ) { typerror("attempt to compare number with string"); return 0; }
public int checkint() {
return (int) v;
}
public long checklong() {
return v;
}
public double checkdouble() {
return v;
}
public String checkjstring() {
return String.valueOf(v);
}
public LuaString checkstring() {
return valueOf( String.valueOf(v) );
}
private static long luaFloorDiv(long lhs, long rhs) {
if (rhs == 0) {
throw new LuaError("attempt to divide by zero");
}
long quotient = lhs / rhs;
long remainder = lhs % rhs;
if (remainder != 0 && ((lhs ^ rhs) < 0)) {
quotient--;
}
return quotient;
}
private static long luaFloorMod(long lhs, long rhs) {
if (rhs == 0) {
throw new LuaError("attempt to divide by zero");
}
return lhs - rhs * luaFloorDiv(lhs, rhs);
}
static long luaShiftLeft(long lhs, long rhs) {
if (rhs < 0) {
return luaShiftRight(lhs, -rhs);
}
return rhs >= Long.SIZE ? 0L : lhs << rhs;
}
static long luaShiftRight(long lhs, long rhs) {
if (rhs < 0) {
return luaShiftLeft(lhs, -rhs);
}
return rhs >= Long.SIZE ? 0L : lhs >>> rhs;
}
private static LuaError bitwiseError() {
return new LuaError("number has no integer representation");
}
}

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/*******************************************************************************
* Copyright (c) 2007-2012 LuaJ. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package org.luaj.vm2;
import java.lang.ref.WeakReference;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* Subclass of {@link LuaValue} that implements
* a lua coroutine thread using Java Threads.
* <p>
* A LuaThread is typically created in response to a scripted call to
* {@code coroutine.create()}
* <p>
* The threads must be initialized with the globals, so that
* the global environment may be passed along according to rules of lua.
* This is done via the constructor arguments {@link #LuaThread(Globals)} or
* {@link #LuaThread(Globals, LuaValue)}.
* <p>
* The utility classes {@link org.luaj.vm2.libs.jse.JsePlatform} and
* {@link org.luaj.vm2.libs.jme.JmePlatform}
* see to it that this {@link Globals} are initialized properly.
* <p>
* The behavior of coroutine threads matches closely the behavior
* of C coroutine library. However, because of the use of Java threads
* to manage call state, it is possible to yield from anywhere in luaj.
* <p>
* Each Java thread wakes up at regular intervals and checks a weak reference
* to determine if it can ever be resumed. If not, it throws
* {@link OrphanedThread} which is an {@link java.lang.Error}.
* Applications should not catch {@link OrphanedThread}, because it can break
* the thread safety of luaj. The value controlling the polling interval
* is {@link #thread_orphan_check_interval} and may be set by the user.
* <p>
* There are two main ways to abandon a coroutine. The first is to call
* {@code yield()} from lua, or equivalently {@link Globals#yield(Varargs)},
* and arrange to have it never resumed possibly by values passed to yield.
* The second is to throw {@link OrphanedThread}, which should put the thread
* in a dead state. In either case all references to the thread must be
* dropped, and the garbage collector must run for the thread to be
* garbage collected.
*
*
* @see LuaValue
* @see org.luaj.vm2.libs.jse.JsePlatform
* @see org.luaj.vm2.libs.jme.JmePlatform
* @see org.luaj.vm2.libs.CoroutineLib
*/
public class LuaThread extends LuaValue {
/** Shared metatable for lua threads. */
public static LuaValue s_metatable;
/** The current number of coroutines. Should not be set. */
public static int coroutine_count = 0;
/** Polling interval, in milliseconds, which each thread uses while waiting to
* return from a yielded state to check if the lua threads is no longer
* referenced and therefore should be garbage collected.
* A short polling interval for many threads will consume server resources.
* Orphaned threads cannot be detected and collected unless garbage
* collection is run. This can be changed by Java startup code if desired.
*/
public static long thread_orphan_check_interval = 5000;
public static final String USE_PLATFORM_THREAD = "USE_PLATFORM_THREAD";
private static boolean SUPPORT_VIRTUAL_THREAD = false;
static {
try {
Thread.class.getMethod("ofVirtual");
SUPPORT_VIRTUAL_THREAD = true;
} catch (Exception e) {
//e.printStackTrace();
}
}
public static final int STATUS_INITIAL = 0;
public static final int STATUS_SUSPENDED = 1;
public static final int STATUS_RUNNING = 2;
public static final int STATUS_NORMAL = 3;
public static final int STATUS_DEAD = 4;
public static final String[] STATUS_NAMES = {
"suspended",
"suspended",
"running",
"normal",
"dead",};
public final State state;
public static final int MAX_CALLSTACK = 256;
/** Thread-local used by DebugLib to store debugging state.
* This is an opaque value that should not be modified by applications. */
public Object callstack;
public final Globals globals;
/** Error message handler for this thread, if any. */
public LuaValue errorfunc;
/** Private constructor for main thread only */
public LuaThread(Globals globals) {
state = new State(globals, this, null);
state.status = STATUS_RUNNING;
this.globals = globals;
}
/**
* Create a LuaThread around a function and environment
* @param func The function to execute
*/
public LuaThread(Globals globals, LuaValue func) {
LuaValue.assert_(func != null, "function cannot be null");
state = new State(globals, this, func);
this.globals = globals;
}
public int type() {
return LuaValue.TTHREAD;
}
public String typename() {
return "thread";
}
public boolean isthread() {
return true;
}
public LuaThread optthread(LuaThread defval) {
return this;
}
public LuaThread checkthread() {
return this;
}
public LuaValue getmetatable() {
return s_metatable;
}
public String getStatus() {
return STATUS_NAMES[state.status];
}
public boolean isMainThread() {
return this.state.function == null;
}
public Varargs resume(Varargs args) {
final LuaThread.State s = this.state;
if (s.status > LuaThread.STATUS_SUSPENDED)
return LuaValue.varargsOf(LuaValue.FALSE,
LuaValue.valueOf("cannot resume "+(s.status==LuaThread.STATUS_DEAD? "dead": "non-suspended")+" coroutine"));
return s.lua_resume(this, args);
}
public static class State implements Runnable {
private final Globals globals;
final WeakReference lua_thread;
public final LuaValue function;
Varargs args = LuaValue.NONE;
Varargs result = LuaValue.NONE;
String error = null;
/** Hook function control state used by debug lib. */
public LuaValue hookfunc;
public boolean hookline;
public boolean hookcall;
public boolean hookrtrn;
public int hookcount;
public boolean inhook;
public int lastline;
public int bytecodes;
public int status = LuaThread.STATUS_INITIAL;
private Lock locker = new ReentrantLock();
private Condition cond = locker.newCondition();
State(Globals globals, LuaThread lua_thread, LuaValue function) {
this.globals = globals;
this.lua_thread = new WeakReference(lua_thread);
this.function = function;
}
public void run() {
locker.lock();
try {
try {
Varargs a = this.args;
this.args = LuaValue.NONE;
this.result = function.invoke(a);
} catch (Throwable t) {
this.error = t.getMessage();
} finally {
this.status = LuaThread.STATUS_DEAD;
cond.signal();
}
} finally {
locker.unlock();
}
}
public Varargs lua_resume(LuaThread new_thread, Varargs args) {
locker.lock();
try {
LuaThread previous_thread = globals.running;
try {
globals.running = new_thread;
this.args = args;
if (this.status == STATUS_INITIAL) {
this.status = STATUS_RUNNING;
Thread t = null;
if(SUPPORT_VIRTUAL_THREAD) {
LuaValue setting = globals.get(USE_PLATFORM_THREAD);
if(setting.isnil()) {//default
if(Thread.currentThread().isVirtual()) {
t = Thread.ofVirtual().name("Coroutine-"+(++coroutine_count)).start(this);
}
} else {
if(!setting.toboolean()) {
t = Thread.ofVirtual().name("Coroutine-"+(++coroutine_count)).start(this);
}
}
}
if (t == null){
new Thread(this, "Coroutine-"+(++coroutine_count)).start();
}
} else {
cond.signal();
}
if (previous_thread != null)
previous_thread.state.status = STATUS_NORMAL;
this.status = STATUS_RUNNING;
cond.await();
return (this.error != null?
LuaValue.varargsOf(LuaValue.FALSE, LuaValue.valueOf(this.error)):
LuaValue.varargsOf(LuaValue.TRUE, this.result));
} catch (InterruptedException ie) {
throw new OrphanedThread();
} finally {
this.args = LuaValue.NONE;
this.result = LuaValue.NONE;
this.error = null;
globals.running = previous_thread;
if (previous_thread != null)
globals.running.state.status =STATUS_RUNNING;
}
} finally {
locker.unlock();
}
}
public Varargs lua_yield(Varargs args) {
locker.lock();
try {
try {
this.result = args;
this.status = STATUS_SUSPENDED;
cond.signal();
do {
cond.await(thread_orphan_check_interval,TimeUnit.MILLISECONDS);
if (this.lua_thread.get() == null) {
this.status = STATUS_DEAD;
throw new OrphanedThread();
}
} while (this.status == STATUS_SUSPENDED);
return this.args;
} catch (InterruptedException ie) {
this.status = STATUS_DEAD;
throw new OrphanedThread();
} finally {
this.args = LuaValue.NONE;
this.result = LuaValue.NONE;
}
} finally {
locker.unlock();
}
}
}
}

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/*******************************************************************************
* Copyright (c) 2009-2011 Luaj.org. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package org.luaj.vm2;
/**
* Prototype representing compiled lua code.
*
* <p>
* This is both a straight translation of the corresponding C type,
* and the main data structure for execution of compiled lua bytecode.
*
* <p>
* Generally, the {@link Prototype} is not constructed directly is an intermediate result
* as lua code is loaded using {@link Globals#load(java.io.Reader, String)}:
* <pre> {@code
* Globals globals = JsePlatform.standardGlobals();
* globals.load( new StringReader("print 'hello'"), "main.lua" ).call();
* } </pre>
*
* <p>
* To create a {@link Prototype} directly, a compiler such as
* {@link org.luaj.vm2.compiler.LuaC} may be used:
* <pre> {@code
* InputStream is = new ByteArrayInputStream("print('hello,world')".getBytes());
* Prototype p = LuaC.instance.compile(is, "script");
* }</pre>
*
* To simplify loading, the {@link Globals#compilePrototype(java.io.InputStream, String)} method may be used:
* <pre> {@code
* Prototype p = globals.compileProtoytpe(is, "script");
* }</pre>
*
* It may also be loaded from a {@link java.io.Reader} via {@link Globals#compilePrototype(java.io.Reader, String)}:
* <pre> {@code
* Prototype p = globals.compileProtoytpe(new StringReader(script), "script");
* }</pre>
*
* To un-dump a binary file known to be a binary lua file that has been dumped to a string,
* the {@link Globals.Undumper} interface may be used:
* <pre> {@code
* FileInputStream lua_binary_file = new FileInputStream("foo.lc"); // Known to be compiled lua.
* Prototype p = globals.undumper.undump(lua_binary_file, "foo.lua");
* }</pre>
*
* To execute the code represented by the {@link Prototype} it must be supplied to
* the constructor of a {@link LuaClosure}:
* <pre> {@code
* Globals globals = JsePlatform.standardGlobals();
* LuaClosure f = new LuaClosure(p, globals);
* f.call();
* }</pre>
*
* To simplify the debugging of prototype values, the contents may be printed using {@link Print#print}:
* <pre> {@code
* Print.print(p);
* }</pre>
* <p>
*
* @see LuaClosure
* @see Globals
* @see Globals#undumper
* @see Globals#compiler
* @see Print#print
*/
public class Prototype {
/* constants used by the function */
public LuaValue[] k;
public int[] code;
/* functions defined inside the function */
public Prototype[] p;
/* map from opcodes to source lines */
public int[] lineinfo;
/* information about local variables */
public LocVars[] locvars;
/* upvalue information */
public Upvaldesc[] upvalues;
public LuaString source;
public int linedefined;
public int lastlinedefined;
public int numparams;
public int is_vararg;
public int maxstacksize;
private static final Upvaldesc[] NOUPVALUES = {};
private static final Prototype[] NOSUBPROTOS = {};
public Prototype() {
p = NOSUBPROTOS;
upvalues = NOUPVALUES;
}
public Prototype(int n_upvalues) {
p = NOSUBPROTOS;
upvalues = new Upvaldesc[n_upvalues];
}
public String toString() {
return source + ":" + linedefined+"-"+lastlinedefined;
}
/** Get the name of a local variable.
*
* @param number the local variable number to look up
* @param pc the program counter
* @return the name, or null if not found
*/
public LuaString getlocalname(int number, int pc) {
int i;
for (i = 0; i<locvars.length && locvars[i].startpc <= pc; i++) {
if (pc < locvars[i].endpc) { /* is variable active? */
number--;
if (number == 0)
return locvars[i].varname;
}
}
return null; /* not found */
}
public String shortsource() {
String name = source.tojstring();
if ( name.startsWith("@") || name.startsWith("=") )
name = name.substring(1);
else if ( name.startsWith("\033") )
name = "binary string";
return name;
}
}

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package org.luaj.vm2.libs;
import org.luaj.vm2.LuaTable;
import org.luaj.vm2.LuaValue;
/**
* Optional helpers for approximate floating-point comparisons.
* This deliberately does not change Lua's core equality semantics.
*/
public class ApproxLib extends TwoArgFunction {
private static final double DEFAULT_EPSILON = 1e-9d;
public LuaValue call(LuaValue modname, LuaValue env) {
LuaTable lib = new LuaTable(0, 2);
lib.set("eq", new approx_eq());
env.set("approx", lib);
env.set("approx_eq", lib.get("eq"));
return lib;
}
static final class approx_eq extends VarArgFunction {
public LuaValue invoke(org.luaj.vm2.Varargs args) {
double a = args.checkdouble(1);
double b = args.checkdouble(2);
double epsilon = args.optdouble(3, DEFAULT_EPSILON);
if (epsilon < 0d) {
argerror(3, "epsilon must be >= 0");
}
return LuaValue.valueOf(approxEqual(a, b, epsilon));
}
}
public static boolean approxEqual(double a, double b, double epsilon) {
if (Double.doubleToLongBits(a) == Double.doubleToLongBits(b)) {
return true;
}
if (Double.isNaN(a) || Double.isNaN(b)) {
return false;
}
if (Double.isInfinite(a) || Double.isInfinite(b)) {
return false;
}
double diff = Math.abs(a - b);
if (diff <= epsilon) {
return true;
}
double scale = Math.max(Math.abs(a), Math.abs(b));
return diff <= scale * epsilon;
}
}

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