diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/primitives/core.d | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/source/primitives/core.d b/source/primitives/core.d index 971f495..a3a24f0 100644 --- a/source/primitives/core.d +++ b/source/primitives/core.d @@ -29,8 +29,11 @@ bool handle(string word) { case "rot" : ternary_op_stack_rot; break; case "true" : nullary_op_value_bool(true); break; case "false" : nullary_op_value_bool(false); break; + case "!" : unary_op_negate; break; case "<" : binary_cond_lt; break; case "=" : binary_cond_eq; break; + case "&" : binary_cond_and; break; + case "or" : binary_cond_or; break; case "#" : debug_print_stack; break; default : return false; } @@ -117,6 +120,12 @@ void nullary_op_value_bool(bool value) { stack.push(Token(value)); } +void unary_op_negate() { + bool a = stack.pop.get!bool; + + stack.push(Token(!a)); +} + void binary_cond_lt() { int b = stack.pop.get!int; int a = stack.pop.get!int; @@ -131,6 +140,20 @@ void binary_cond_eq() { stack.push(a == b); } +void binary_cond_and() { + bool b = stack.pop.get!bool; + bool a = stack.pop.get!bool; + + stack.push(Token(a && b)); +} + +void binary_cond_or() { + bool b = stack.pop.get!bool; + bool a = stack.pop.get!bool; + + stack.push(Token(a || b)); +} + void debug_print_stack() { writeln(stack[]); } |