Evaluates an eager binary operation, x op y. (Excludes AND and OR.)
(TokenKind op, Object x, Object y, StarlarkThread starlarkThread)
| 76 | |
| 77 | /** Evaluates an eager binary operation, {@code x op y}. (Excludes AND and OR.) */ |
| 78 | static Object binaryOp(TokenKind op, Object x, Object y, StarlarkThread starlarkThread) |
| 79 | throws EvalException { |
| 80 | StarlarkSemantics semantics = starlarkThread.getSemantics(); |
| 81 | Mutability mu = starlarkThread.mutability(); |
| 82 | switch (op) { |
| 83 | case PLUS: |
| 84 | if (x instanceof StarlarkInt) { |
| 85 | if (y instanceof StarlarkInt) { |
| 86 | // int + int |
| 87 | return StarlarkInt.add((StarlarkInt) x, (StarlarkInt) y); |
| 88 | } else if (y instanceof StarlarkFloat) { |
| 89 | // int + float |
| 90 | double z = ((StarlarkInt) x).toFiniteDouble() + ((StarlarkFloat) y).toDouble(); |
| 91 | return StarlarkFloat.of(z); |
| 92 | } |
| 93 | |
| 94 | } else if (x instanceof String) { |
| 95 | if (y instanceof String) { |
| 96 | // string + string |
| 97 | return (String) x + (String) y; |
| 98 | } |
| 99 | |
| 100 | } else if (x instanceof Tuple) { |
| 101 | if (y instanceof Tuple) { |
| 102 | // tuple + tuple |
| 103 | return Tuple.concat((Tuple) x, (Tuple) y); |
| 104 | } |
| 105 | |
| 106 | } else if (x instanceof StarlarkList) { |
| 107 | if (y instanceof StarlarkList) { |
| 108 | // list + list |
| 109 | return StarlarkList.concat((StarlarkList<?>) x, (StarlarkList<?>) y, mu); |
| 110 | } |
| 111 | |
| 112 | } else if (x instanceof StarlarkFloat) { |
| 113 | double xf = ((StarlarkFloat) x).toDouble(); |
| 114 | if (y instanceof StarlarkFloat) { |
| 115 | // float + float |
| 116 | double z = xf + ((StarlarkFloat) y).toDouble(); |
| 117 | return StarlarkFloat.of(z); |
| 118 | } else if (y instanceof StarlarkInt) { |
| 119 | // float + int |
| 120 | double z = xf + ((StarlarkInt) y).toFiniteDouble(); |
| 121 | return StarlarkFloat.of(z); |
| 122 | } |
| 123 | } |
| 124 | break; |
| 125 | |
| 126 | case PIPE: |
| 127 | if (x instanceof StarlarkInt) { |
| 128 | if (y instanceof StarlarkInt) { |
| 129 | // int | int |
| 130 | return StarlarkInt.or((StarlarkInt) x, (StarlarkInt) y); |
| 131 | } |
| 132 | } else if (x instanceof Map) { |
| 133 | if (y instanceof Map) { |
| 134 | // map | map (usually dicts) |
| 135 | return Dict.builder().putAll((Map<?, ?>) x).putAll((Map<?, ?>) y).build(mu); |