Backport racc-1.4.15 from upstream.

1 files changed, 123 insertions, 0 deletions

diff --git a/test/racc/assets/opt.y b/test/racc/assets/opt.y
new file mode 100644
index 0000000000..a011953a51
--- /dev/null
+++ b/test/racc/assets/opt.y
@@ -0,0 +1,123 @@
+#
+# check options working
+#
+
+class Calcp
+
+  prechigh
+    left '*' '/'
+    left '+' '-'
+  preclow
+
+  convert
+    NUMBER 'Number'
+  end
+
+  options no_omit_action_call no_result_var
+
+rule
+
+  target : exp | /* none */ { 0 } ;
+
+  exp    : exp '+' exp { chk(val[0] + val[2]) }
+         | exp '-' exp { chk(val[0] - val[2]) }
+         | exp '*' exp { chk(val[0] * val[2]) }
+         | exp '/' exp { chk(val[0] / val[2]) }
+         | '(' { $emb = true } exp ')'
+             {
+               raise 'must not happen' unless $emb
+               val[2]
+             }
+         | '-' NUMBER  { -val[1] }
+         | NUMBER
+         ;
+
+end
+
+----header
+
+class Number; end
+
+----inner
+
+  def parse( src )
+    @src = src
+    do_parse
+  end
+
+  def next_token
+    @src.shift
+  end
+
+  def initialize
+    @yydebug = true
+  end
+
+  def chk( i )
+    # p i
+    i
+  end
+
+----footer
+
+$parser = Calcp.new
+$test_number = 1
+
+def chk( src, ans )
+  result = $parser.parse(src)
+  raise "test #{$test_number} failed" unless result == ans
+  $test_number += 1
+end
+
+chk(
+  [ [Number, 9],
+    [false, false],
+    [false, false] ], 9
+)
+
+chk(
+  [ [Number, 5],
+    ['*', nil],
+    [Number, 1],
+    ['-', nil],
+    [Number, 1],
+    ['*', nil],
+    [Number, 8],
+    [false, false],
+    [false, false] ], -3
+)
+
+chk(
+  [ [Number, 5],
+    ['+', nil],
+    [Number, 2],
+    ['-', nil],
+    [Number, 5],
+    ['+', nil],
+    [Number, 2],
+    ['-', nil],
+    [Number, 5],
+    [false, false],
+    [false, false] ], -1
+)
+
+chk(
+  [ ['-', nil],
+    [Number, 4],
+    [false, false],
+    [false, false] ], -4
+)
+
+chk(
+  [ [Number, 7],
+    ['*', nil],
+    ['(', nil],
+    [Number, 4],
+    ['+', nil],
+    [Number, 3],
+    [')', nil],
+    ['-', nil],
+    [Number, 9],
+    [false, false],
+    [false, false] ], 40
+)