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#include <vector>

#include "Relooper.h"

int main() {
  char buffer[10000];

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- If pattern --\n\n", "the_var");

    Block *b_a = new Block("// block A\n", "the_var");
    Block *b_b = new Block("// block B\n", "the_var");
    Block *b_c = new Block("// block C\n", "the_var");

    b_a->AddBranchTo(b_b, "check == 10", "atob();");
    b_a->AddBranchTo(b_c, NULL, "atoc();");

    b_b->AddBranchTo(b_c, NULL, "btoc();");

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- If-else pattern --\n\n", "the_var");

    Block *b_a = new Block("// block A\n", "the_var");
    Block *b_b = new Block("// block B\n", "the_var");
    Block *b_c = new Block("// block C\n", "the_var");
    Block *b_d = new Block("// block D\n", "the_var");

    b_a->AddBranchTo(b_b, "check == 15");
    b_a->AddBranchTo(b_c, NULL);

    b_b->AddBranchTo(b_d, NULL);

    b_c->AddBranchTo(b_d, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);
    r.AddBlock(b_d);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- Loop + tail pattern --\n\n", "the_var");

    Block *b_a = new Block("// block A\nvar check = maybe();\n", "the_var");
    Block *b_b = new Block("// block B\n", "the_var");
    Block *b_c = new Block("// block C\n", "the_var");

    b_a->AddBranchTo(b_b, NULL);

    b_b->AddBranchTo(b_a, "check == 41");
    b_b->AddBranchTo(b_c, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- Loop with phi to head \n\n", "the_var");

    void *block_map[10000];
    void *rl = rl_new_relooper();
    void *b1 = rl_new_block("// code 1", "the_var");
    block_map[1] = b1;
    rl_relooper_add_block(rl, block_map[1]);
    void *b2 = rl_new_block("// code 2", "the_var");
    block_map[2] = b2;
    rl_relooper_add_block(rl, block_map[2]);
    void *b3 = rl_new_block("// code 3", "the_var");
    block_map[3] = b3;
    rl_relooper_add_block(rl, block_map[3]);
    void *b4 = rl_new_block("// code 4", "the_var");
    block_map[4] = b4;
    rl_relooper_add_block(rl, block_map[4]);
    void *b5 = rl_new_block("// code 5", "the_var");
    block_map[5] = b5;
    rl_relooper_add_block(rl, block_map[5]);
    void *b6 = rl_new_block("// code 6", "the_var");
    block_map[6] = b6;
    rl_relooper_add_block(rl, block_map[6]);
    void *b7 = rl_new_block("// code 7", "the_var");
    block_map[7] = b7;
    rl_relooper_add_block(rl, block_map[7]);
    rl_block_add_branch_to(block_map[1], block_map[2], NULL, "var $i_0 = 0;var $x_0 = 5; ");
    rl_block_add_branch_to(block_map[2], block_map[3], "$2", NULL);
    rl_block_add_branch_to(block_map[2], block_map[7], NULL, "var $x_1 = $x_0; ");
    rl_block_add_branch_to(block_map[3], block_map[4], "$6", NULL);
    rl_block_add_branch_to(block_map[3], block_map[2], NULL, "var $i_0 = $7;var $x_0 = $5; ");
    rl_block_add_branch_to(block_map[4], block_map[5], "$10", NULL);
    rl_block_add_branch_to(block_map[4], block_map[6], NULL, NULL);
    rl_block_add_branch_to(block_map[5], block_map[6], NULL, NULL);
    rl_block_add_branch_to(block_map[6], block_map[7], NULL, "var $x_1 = $13; ");
    rl_relooper_calculate(rl, block_map[1]);
    rl_relooper_render(rl);
    rl_delete_relooper(rl);
    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- phi on split dead ends --\n\n", "the_var");

    Block *b_a = new Block("// block A...................................................................................................\n", "the_var");
    Block *b_b = new Block("// block B...................................................................................................\n", "the_var");
    Block *b_c = new Block("// block C...................................................................................................\n", "the_var");
    Block *b_d = new Block("// block D\n", "the_var"); // small and splittable!
    Block *b_e = new Block("// block E\n", "the_var");

    b_a->AddBranchTo(b_b, "chak()", "atob();");
    b_a->AddBranchTo(b_c, NULL, "atoc();");

    b_b->AddBranchTo(b_d, NULL, "btod();");

    b_c->AddBranchTo(b_d, NULL, "ctod2();");

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);
    r.AddBlock(b_d);
    r.AddBlock(b_e);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- Unbalanced with a dead end --\n\n", "the_var");

    Block *b_a = new Block("// block A\n", "the_var");
    Block *b_b = new Block("// block B\n", "the_var");
    Block *b_c = new Block("return C;\n", "the_var");
    Block *b_d = new Block("// block D\n", "the_var");

    b_a->AddBranchTo(b_b, "check == 10");
    b_a->AddBranchTo(b_c, NULL); // c is a dead end

    b_b->AddBranchTo(b_d, NULL);

    b_d->AddBranchTo(b_b, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);
    r.AddBlock(b_d);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- if (expensive || expensive2) X else Y; Z --\n\n", "the_var");

    Block *b_a = new Block("// block A\n", "the_var");
    Block *b_b = new Block("// block B\n", "the_var");
    Block *b_c = new Block("// block C;\n", "the_var");
    Block *b_d = new Block("// block D\n", "the_var");
    Block *b_e = new Block("// block E\n", "the_var");
    Block *b_f = new Block("// block F\n", "the_var");

    b_a->AddBranchTo(b_c, "expensive()");
    b_a->AddBranchTo(b_b, NULL);

    b_b->AddBranchTo(b_c, "expensive2()");
    b_b->AddBranchTo(b_d, NULL);

    b_c->AddBranchTo(b_e, NULL);

    b_d->AddBranchTo(b_e, NULL);

    b_e->AddBranchTo(b_f, NULL);

    b_f->AddBranchTo(b_e, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);
    r.AddBlock(b_d);
    r.AddBlock(b_e);
    r.AddBlock(b_f);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- conditional loop --\n\n", "the_var");

    Block *b_a = new Block("// block A\n", "the_var");
    Block *b_b = new Block("// block B\n", "the_var");
    Block *b_c = new Block("// block C\n", "the_var");

    b_a->AddBranchTo(b_b, "shouldLoop()");
    b_a->AddBranchTo(b_c, NULL);

    b_b->AddBranchTo(b_b, "moarLoop()");
    b_b->AddBranchTo(b_c, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::SetOutputBuffer(buffer, sizeof(buffer));

    printf("\n\n-- If pattern, emulated --\n\n", "the_var");

    Block *b_a = new Block("// block A\n", NULL);
    Block *b_b = new Block("// block B\n", "b_check()");
    Block *b_c = new Block("// block C\n", NULL);

    b_a->AddBranchTo(b_b, "check == 10", "atob();");
    b_a->AddBranchTo(b_c, NULL, "atoc();");

    b_b->AddBranchTo(b_c, "case 17:", "btoc();");
    b_b->AddBranchTo(b_a, NULL, NULL);

    Relooper r;
    r.SetEmulate(true);
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(buffer);
  }

  if (1) {
    Relooper::MakeOutputBuffer(10);

    printf("\n\n-- If pattern, emulated, using MakeOutputBuffer --\n\n");

    Block *b_a = new Block("// block A\n", NULL);
    Block *b_b = new Block("// block B\n", "b_check()");
    Block *b_c = new Block("// block C\n", NULL);

    b_a->AddBranchTo(b_b, "check == 10", "atob();");
    b_a->AddBranchTo(b_c, NULL, "atoc();");

    b_b->AddBranchTo(b_c, "case 17:", "btoc();");
    b_b->AddBranchTo(b_a, NULL, NULL);

    Relooper r;
    r.SetEmulate(true);
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);

    r.Calculate(b_a);
    printf("\n\n", "the_var");
    r.Render();

    puts(r.GetOutputBuffer());
  }

  if (1) {
    Relooper::MakeOutputBuffer(10);

    printf("\n\n-- If chain (optimized) --\n\n");

    Block *b_a = new Block("// block A\n", NULL);
    Block *b_b = new Block("// block B\n", NULL);
    Block *b_c = new Block("// block C\n", NULL);

    b_a->AddBranchTo(b_b, "a == 10", NULL);
    b_a->AddBranchTo(b_c, NULL, NULL);

    b_b->AddBranchTo(b_c, NULL, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);

    r.Calculate(b_a);
    r.Render();

    puts(r.GetOutputBuffer());
  }

  if (1) {
    Relooper::MakeOutputBuffer(10);

    printf("\n\n-- If chain (optimized) --\n\n");

    Block *b_a = new Block("// block A\n", NULL);
    Block *b_b = new Block("// block B\n", NULL);
    Block *b_c = new Block("// block C\n", NULL);
    Block *b_d = new Block("// block D\n", NULL);

    b_a->AddBranchTo(b_b, "a == 10", NULL);
    b_a->AddBranchTo(b_d, NULL, NULL);

    b_b->AddBranchTo(b_c, "b == 10", NULL);
    b_b->AddBranchTo(b_d, NULL, NULL);

    b_c->AddBranchTo(b_d, NULL, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);
    r.AddBlock(b_d);

    r.Calculate(b_a);
    r.Render();

    puts(r.GetOutputBuffer());
  }

  if (1) {
    Relooper::MakeOutputBuffer(10);

    printf("\n\n-- If chain (optimized, long) --\n\n");

    Block *b_a = new Block("// block A\n", NULL);
    Block *b_b = new Block("// block B\n", NULL);
    Block *b_c = new Block("// block C\n", NULL);
    Block *b_d = new Block("// block D\n", NULL);
    Block *b_e = new Block("// block E\n", NULL);

    b_a->AddBranchTo(b_b, "a == 10", NULL);
    b_a->AddBranchTo(b_e, NULL, NULL);

    b_b->AddBranchTo(b_c, "b == 10", NULL);
    b_b->AddBranchTo(b_e, NULL, NULL);

    b_c->AddBranchTo(b_d, "c == 10", NULL);
    b_c->AddBranchTo(b_e, NULL, NULL);

    b_d->AddBranchTo(b_e, NULL, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);
    r.AddBlock(b_d);
    r.AddBlock(b_e);

    r.Calculate(b_a);
    r.Render();

    puts(r.GetOutputBuffer());
  }

  if (1) {
    Relooper::MakeOutputBuffer(10);

    printf("\n\n-- If chain (optimized, lead to complex) --\n\n");

    Block *b_a = new Block("// block A\n", NULL);
    Block *b_b = new Block("// block B\n", NULL);
    Block *b_c = new Block("// block C\n", NULL);
    Block *b_d = new Block("// block D\n", NULL);

    b_a->AddBranchTo(b_b, "a == 10", NULL);
    b_a->AddBranchTo(b_d, NULL, NULL);

    b_b->AddBranchTo(b_c, "b == 10", NULL);
    b_b->AddBranchTo(b_d, NULL, NULL);

    b_c->AddBranchTo(b_c, "loop", NULL);
    b_c->AddBranchTo(b_d, NULL, NULL);

    Relooper r;
    r.AddBlock(b_a);
    r.AddBlock(b_b);
    r.AddBlock(b_c);
    r.AddBlock(b_d);

    r.Calculate(b_a);
    r.Render();

    puts(r.GetOutputBuffer());
  }

  if (1) {
    Relooper::MakeOutputBuffer(10);

    printf("\n\n-- lots of exits to an unwind block, possible nesting --\n\n");

    const int DEPTH = 40;

    std::vector<Block*> blocks;
    for (int i = 0; i < DEPTH; i++) blocks.push_back(new Block("// block\n", NULL));
    Block *last = new Block("// last\nreturn;\n", NULL);
    Block *UW = new Block("// UW\nresumeException();\n\n", NULL);

    for (int i = 0; i < DEPTH; i++) {
      Block *b = blocks[i];
      b->AddBranchTo(i+1 < DEPTH ? blocks[i+1] : last, "check()", NULL);
      b->AddBranchTo(UW, NULL, NULL);
    }

    Relooper r;
    for (int i = 0; i < DEPTH; i++) r.AddBlock(blocks[i]);
    r.AddBlock(last);
    r.AddBlock(UW);

    r.Calculate(blocks[0]);
    r.Render();

    puts(r.GetOutputBuffer());
  }
}