first stuff of randomif

src/AST/CodeGenVisitor.cpp

@@ -176,6 +176,29 @@ void CodeGenVisitor::visit(RandomForStatement* e) {
 }
 
 void CodeGenVisitor::visit(RandomIfStatement* e) {
+	value_ = 0;
+	e->getProb()->accept(this);
+
+	llvm::Function* f = builder_->GetInsertBlock()->getParent();
+	llvm::BasicBlock* thenBB = llvm::BasicBlock::Create(llvm::getGlobalContext(), "then", f);
+	llvm::BasicBlock* elseBB = llvm::BasicBlock::Create(llvm::getGlobalContext(), "else");
+	llvm::BasicBlock* mergeBB = llvm::BasicBlock::Create(llvm::getGlobalContext(), "merge");
+
+	builder_->CreateCondBr(value_, thenBB, elseBB);
+
+	// then
+	builder_->SetInsertPoint(thenBB);#
+	e->getStmt()->accept(this);
+
+	builder_->CreateBr(mergeBB);
+
+	f->getBasicBlockList().push_back(elseBB);
+	builder_->SetInsertPoint(elseBB);
+
+	builder_->CreateBr(mergeBB);
+
+	f->getBasicBlockList().push_back(mergeBB);
+	builder_->SetInsertPoint(mergeBB);
 }
 
 void CodeGenVisitor::visit(ReturnStatement* e) {

src/libscully.c

@@ -0,0 +1,9 @@
+#include <time.h>
+#include <stdlib.h>
+
+bool random_if(int p) {
+	srand(time(NULL));
+	int r = rand() % 100;
+
+	return (r < p);
+}