private void visitBlock(BlockContext block) {
symbolTable.newScope();
for (BlockStatementContext blockStatement : block.blockStatement()) {
visitBlockStatement(blockStatement);
}
symbolTable.dropScope();
}
private void checkReturn(BlockContext block) {
if (returnType == ValueType.VOID) {
method.visitInsn(Opcodes.RETURN);
return;
}
if (block.blockStatement() != null) {
int lastStatement = block.blockStatement().size() - 1;
BlockStatementContext blockStatement = block.blockStatement(lastStatement);
if (blockStatement.statement() != null) {
StatementContext statement = blockStatement.statement();
if (statement.jumpStatement() != null) {
JumpStatementContext jumpStatement = statement.jumpStatement();
if (jumpStatement.returnSt != null) {
return;
}
}
}
}
throw new GenerationException(
"Last statement of function with non-null return type must be return. String: "
+ block.getText());
}