public void visit(ReturnStmt n, Object arg) {
if (n.getExpr() != null) {
n.getExpr().accept(this, arg);
}
}
/**
* Highly recursive method that will parse a file into its semantical statements. Currently
* identifies all often used Statements (if, for, while, try, etc.). Also every other non-flow
* dependant statement like variable assignments, method calls, etc are considered Expression
* Statements. As they are "primitive" in terms that cannot contain inner expressions, we just use
* the default name of the class for them as the Token Type.
*
* <p>For more information and examples on how this parser actually works, please refer to the
* documentation.
*
* @param stmt
*/
private void parseStatement(Statement stmt) {
// full list of all statements:
// https://java.net/projects/jpjavaparser/sources/source-code-repository/show/src/japa/parser/ast/stmt
if (stmt == null) {
return;
}
// Block Statement is a List of statements
if (stmt instanceof BlockStmt) {
BlockStmt blockStmt = (BlockStmt) stmt;
for (Statement st : blockStmt.getStmts()) {
parseStatement(st);
}
// If Statement
} else if (stmt instanceof IfStmt) {
IfStmt ifStmt = (IfStmt) stmt;
tokens.add(new Token(ifStmt.getCondition().toString(), getObjectType(ifStmt)));
parseStatement(ifStmt.getThenStmt());
parseStatement(ifStmt.getElseStmt());
// For statement
} else if (stmt instanceof ForStmt) {
ForStmt forStmt = (ForStmt) stmt;
if (forStmt.getInit() != null
&& forStmt.getCompare() != null
&& forStmt.getUpdate() != null) {
tokens.add(
new Token(
forStmt.getInit().toString()
+ ";"
+ forStmt.getCompare().toString()
+ ";"
+ forStmt.getUpdate().toString(),
getObjectType(forStmt)));
} else {
tokens.add(new Token("For", getObjectType(forStmt)));
}
parseStatement(forStmt.getBody());
// Foreach Statement
} else if (stmt instanceof ForeachStmt) {
ForeachStmt foreachStmt = (ForeachStmt) stmt;
tokens.add(
new Token(
foreachStmt.getVariable().toString() + ":" + foreachStmt.getIterable().toString(),
getObjectType(foreachStmt)));
parseStatement(foreachStmt.getBody());
// While Statement
} else if (stmt instanceof WhileStmt) {
WhileStmt whileStmt = (WhileStmt) stmt;
tokens.add(new Token(whileStmt.getCondition().toString(), getObjectType(whileStmt)));
parseStatement(whileStmt.getBody());
// Do Statement
} else if (stmt instanceof DoStmt) {
DoStmt doStmt = (DoStmt) stmt;
tokens.add(new Token(doStmt.getCondition().toString(), getObjectType(doStmt)));
parseStatement(doStmt.getBody());
// Try Statement
} else if (stmt instanceof TryStmt) {
TryStmt tryStmt = (TryStmt) stmt;
tokens.add(new Token("Try", getObjectType(tryStmt)));
parseStatement(tryStmt.getTryBlock());
// Return Statement
} else if (stmt instanceof ReturnStmt) {
ReturnStmt returnStmt = (ReturnStmt) stmt;
if (returnStmt.getExpr() != null) {
tokens.add(new Token(returnStmt.getExpr().toString(), getObjectType(returnStmt)));
} else {
tokens.add(new Token("Void", getObjectType(returnStmt)));
}
// Empty Statement
} else if (stmt instanceof EmptyStmt) {
tokens.add(new Token("", getObjectType(stmt)));
// Continue Statement
} else if (stmt instanceof ContinueStmt) {
tokens.add(new Token("Continue", getObjectType(stmt)));
// Break Statement
} else if (stmt instanceof BreakStmt) {
tokens.add(new Token("Break", getObjectType(stmt)));
// Explicit Constructor Invocation Statement
} else if (stmt instanceof ExplicitConstructorInvocationStmt) {
ExplicitConstructorInvocationStmt eciStmt = (ExplicitConstructorInvocationStmt) stmt;
tokens.add(new Token(eciStmt.getExpr().toString(), getObjectType(eciStmt)));
// Expression Statement
} else if (stmt instanceof ExpressionStmt) {
ExpressionStmt exprStmt = (ExpressionStmt) stmt;
tokens.add(new Token(exprStmt.toString(), getObjectType(exprStmt.getExpression())));
} else {
// this should never be called
tokens.add(new Token(stmt.toString(), "OTHER"));
}
}