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package frege.gradle.tasks
import groovy.transform.TypeChecked
import org.gradle.api.Action
import org.gradle.api.file.Directory
import org.gradle.api.file.FileCollection
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.Optional
import org.gradle.api.tasks.TaskAction
import org.gradle.api.tasks.compile.AbstractCompile
import org.gradle.process.JavaExecSpec
/* Compiler flags as of 3.25.84
-d directory target directory for *.java and *.class files
-fp classpath where to find imported frege packages
-enc charset charset for source code files, standard is UTF-8
-enc DEFAULT platform default charset for source code files
-target n.m generate code for java version n.m, also passed to javac
-nocp exclude java classpath from -fp
-hints print more detailed error messages and warnings
-inline inline functions where possible
-strict-pats check patterns in multi-argument functions strictly from left to right
-comments generate commented code
-explain i[-j] print some debugging output from type checker
regarding line(s) i (to j). May help to understand
inexplicable type errors better.
-nowarn don't print warnings (not recommended)
-v verbose mode on
-make build outdated or missing imports
-sp srcpath look for source files in srcpath, default is .
-target x.y generate code for java version x.y, default is the
version of the JVM the compiler is running in.
-j do not run the java compiler
-ascii do not use →, ⇒, ∀ and ∷ when presenting types,
and use ascii characters for java generics variables
-greek make greek type variables
-fraktur make 𝖋𝖗𝖆𝖐𝖙𝖚𝖗 type variables
-latin make latin type variables
*/
@TypeChecked
class FregeCompile extends AbstractCompile {
FileCollection classpath
@Input
String stackSize = "4m"
@Input
boolean hints = false
@Input
boolean optimize = false
@Input
boolean strictPats = false
@Input
boolean excludeJavaClasspath = false
boolean verbose = false
@Input
boolean inline = true
@Input
boolean make = true
@Input
boolean compileGeneratedJava = true
@Input
String target = ""
@Input
boolean comments = false
@Input
boolean suppressWarnings = false
@Input
String explain = ""
@Input
String extraArgs = ""
@Input
String allArgs = "" // this is an option to overrule all other settings
@Input
String module = ""
@Optional @InputFiles
FileCollection fregepath
@Input
File destinationDir
@Input
String mainClass = "frege.compiler.Main"
@Input
List<String> allJvmArgs = []
@Input
String encoding = ""
@Input
String prefix = ""
List<File> sourcePaths = []
@Override
@TaskAction
protected void compile() {
def jvmArgumentsToUse = allJvmArgs.empty ? ["-Xss$stackSize"] : new ArrayList<String>(allJvmArgs)
def compilerArgs = allArgs ? allArgs.split().toList() : assembleArguments()
logger.info("Calling Frege compiler with compilerArgs: '$compilerArgs'")
//TODO integrate with gradle compiler daemon infrastructure and skip internal execution
project.javaexec(new Action<JavaExecSpec>() {
@Override
void execute(JavaExecSpec javaExecSpec) {
javaExecSpec.args = compilerArgs
javaExecSpec.classpath = FregeCompile.this.classpath
javaExecSpec.main = mainClass
javaExecSpec.jvmArgs = jvmArgumentsToUse as List<String>
javaExecSpec.errorOutput = System.err;
javaExecSpec.standardOutput = System.out;
}
});
}
public FregeCompile source(Object... sources) {
super.source(sources);
// track directory roots
for (Object source : sources) {
sourcePaths.add(project.file(source))
}
return this;
}
protected List<String> assembleArguments() {
List args = []
if (hints)
args << "-hints"
if (optimize) {
args << "-O"
args << "-inline"
}
if (inline & !optimize)
args << "-inline"
if (strictPats)
args << "-strict-pats"
if (excludeJavaClasspath)
args << "-nocp"
if (make)
args << "-make"
if (!compileGeneratedJava)
args << "-j"
if (target != "") {
args << "-target"
args << target
}
if (comments)
args << "-comments"
if (suppressWarnings)
args << "-nowarn"
if (explain != "") {
args << "-explain"
args << explain
}
if (verbose)
args << "-v"
if (fregepath != null && !fregepath.isEmpty()) {
args << "-fp"
args << fregepath.files.collect { f -> f.absolutePath }.join(File.pathSeparator)
}
if (sourcePaths != null && !sourcePaths.isEmpty()) {
args << "-sp"
args << sourcePaths.collect { d -> d.absolutePath }.join(File.pathSeparator)
}
if (encoding != "") {
args << "-enc"
args << encoding
}
if (prefix != "") {
args << "-prefix"
args << prefix
}
args << "-d"
args << getDestinationDir().absolutePath
if (!module.isEmpty()) {
logger.info "compiling module '$module'"
args << module
} else {
args = (args + extraArgs.split().toList()).toList()
}
args
}
}
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