#!/bin/sh
# Step-1 regression: M2 -> gen_ssa/*.ssa -> qbe -> cc -> exit code.
# Usage: ./run_tests.sh   (from the compiler directory)
pass=0; fail=0

modof() {
  sed -n 's/^MODULE \([A-Za-z][A-Za-z0-9]*\).*/\1/p' "tests/$1" | head -n 1
}

expect_run() {
  # $1 = test file (no dir), $2 = expected exit code
  name="$1"; want="$2"; mod=$(modof "$name")
  rm -f "gen_ssa/$mod.ssa" "gen_ssa/$mod.s" "gen_ssa/$mod"
  if ./M2 "tests/$name" 2>&1 | grep -q "Parsed correctly"; then :; else
    fail=$((fail+1)); echo "FAIL(run): $name rejected"; return
  fi
  if [ ! -f "gen_ssa/$mod.ssa" ]; then
    fail=$((fail+1)); echo "FAIL(run): $name no gen_ssa/$mod.ssa"; return
  fi
  if ! qbe -o "gen_ssa/$mod.s" "gen_ssa/$mod.ssa" 2> "gen_ssa/$mod.qbeerr"; then
    fail=$((fail+1)); echo "FAIL(run): $name qbe:"; cat "gen_ssa/$mod.qbeerr"; return
  fi
  if ! cc "gen_ssa/$mod.s" -o "gen_ssa/$mod" 2> "gen_ssa/$mod.ccerr"; then
    fail=$((fail+1)); echo "FAIL(run): $name cc:"; cat "gen_ssa/$mod.ccerr"; return
  fi
  timeout 10 "gen_ssa/$mod" > /dev/null 2>&1; got=$?
  if [ "$got" = "$want" ]; then
    pass=$((pass+1)); echo "PASS(run): $name -> $got"
  else
    fail=$((fail+1)); echo "FAIL(run): $name got $got want $want"
  fi
}

expect_fail() {
  # $1 = test file, $2 = message text expected in the .LST
  name="$1"; want="$2"
  if ./M2 "tests/$name" 2>&1 | grep -q "Incorrect source"; then :; else
    fail=$((fail+1)); echo "FAIL(fail): $name accepted"; return
  fi
  lst="tests/$(basename "$name" .mod).LST"
  if grep -q "$want" "$lst" 2>/dev/null; then
    pass=$((pass+1)); echo "PASS(fail): $name [$want]"
  else
    fail=$((fail+1)); echo "FAIL(fail): [$want] not found in $lst"
  fi
}

mkdir -p gen_ssa
expect_run t_minimal.mod 0
expect_run t_exit.mod 7
expect_run t_arith.mod 25
expect_run showcase1.mod 50
expect_run t_types.mod 8
expect_run showcase2.mod 71
expect_run t_if.mod 25
expect_run t_while.mod 55
expect_run t_repeat.mod 55
expect_run t_loop.mod 55
expect_run t_for.mod 85
expect_run t_case.mod 103
expect_run t_bool.mod 42
expect_run t_real.mod 31
expect_run showcase3.mod 183
expect_fail t_enumdecl.mod "not supported yet"
expect_fail t_proc.mod "not supported yet"
expect_fail t_forward.mod "not supported yet"
expect_fail t_bad_undecl.mod "undeclared identifier"
expect_fail t_bad_dup.mod "duplicate identifier"
expect_fail t_bad_mismatch.mod "module name mismatch"
expect_fail t_bad_opaque.mod "opaque type outside definition"
expect_fail t_bad_while.mod "BOOLEAN condition required"
expect_fail t_bad_exit.mod "not supported yet"
expect_fail t_bad_return.mod "bad RETURN"
expect_fail t_bad_for.mod "FOR needs integer variable and bounds"
expect_fail t_bad_mixed.mod "incompatible assignment"
expect_fail t_defunit.mod "not supported yet"
expect_fail t_implunit.mod "not supported yet"
expect_fail t_nested.mod "not supported yet"
echo "--- $pass passed, $fail failed ---"
[ "$fail" -eq 0 ]