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4 changes: 3 additions & 1 deletion src/Driver.rsc
Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,8 @@ import lang::java::refactoring::SwitchString;
import lang::java::refactoring::VarArgs;
import lang::java::refactoring::Diamond;
import lang::java::refactoring::AnonymousToLambda;
import lang::java::refactoring::FilterPatternToLambda;
import lang::java::refactoring::ExistPatternToLambda;
import lang::java::refactoring::FilterPattern;

import lang::java::util::ManageCompilationUnit;
import lang::java::m3::M3Util;
Expand Down Expand Up @@ -53,6 +54,7 @@ public void refactorProjects(loc input, bool verbose = true) {
case /VA/: executeTransformations(projectFiles, toInt(projectDescriptor[3]), verbose, refactorVarArgs, "varargs");
case /DI/: executeTransformations(projectFiles, toInt(projectDescriptor[3]), verbose, refactorDiamond, "diamond");
case /AC/: executeTransformations(projectFiles, toInt(projectDescriptor[3]), verbose, refactorAnonymousInnerClass, "aic");
case /EP/: executeTransformations(projectFiles, toInt(projectDescriptor[3]), verbose, refactorExistPattern, "exist pattern");
case /FP/: executeTransformations(projectFiles, toInt(projectDescriptor[3]), verbose, refactorFilterPattern, "filter pattern");
default: logMessage(" ... nothing to be done");
}
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Original file line number Diff line number Diff line change
@@ -1,14 +1,19 @@
module lang::java::refactoring::FilterPatternToLambda
module lang::java::refactoring::ExistPatternToLambda

import ParseTree;
import lang::java::\syntax::Java18;

public tuple[int, CompilationUnit] refactorFilterPattern(CompilationUnit cu) {
/**
* Refactor a compilation unit to replace
* foreach statements, according to the
* exist pattern, into a lambda expression.
*/
public tuple[int, CompilationUnit] refactorExistPattern(CompilationUnit cu) {
int total = 0;
CompilationUnit unit = visit(cu) {
case(BlockStatements)`for(<UnannType t> <Identifier var> : <Expression exp>) { if(<Expression e>) { return true; } } return false;` : {
total += 1;
insert (BlockStatements)`return <Identifier exp>.stream().anyMatches(<Identifier var> -\> <Expression e>);`;
insert (BlockStatements)`return <Identifier exp>.stream().anyMatch(<Identifier var> -\> <Expression e>);`;
}
};
return <total, unit>;
Expand Down
20 changes: 20 additions & 0 deletions src/lang/java/refactoring/FilterPattern.rsc
Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
module lang::java::refactoring::FilterPattern

import ParseTree;
import lang::java::\syntax::Java18;

/**
* Refactor a compilation unit to replace
* foreach statements, according to the
* exist pattern, into a lambda expression.
*/
public tuple[int, CompilationUnit] refactorFilterPattern(CompilationUnit cu) {
int total = 0;
CompilationUnit unit = visit(cu) {
case(BlockStatements)`for(<UnannType t> <Identifier var> : <Expression exp>) { if(<Expression e>) { return true; }}` : {
total += 1;
insert (BlockStatements)`c = exp.stream().filter(var -\> e).list();`;
}
};
return <total, unit>;
}
4 changes: 3 additions & 1 deletion testes/BasicTest.java
Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,9 @@ public static void whileWithIteratorStatement() {
}

for(int s : list) { if(s.length()) { return true; }
}
} return false;

//for(int s: list) { if(s.lenght()) { return true; } }
}

public static void ifElseStatement(String string, int number, boolean bool) {
Expand Down