Notice: this Wiki will be going read only early in 2024 and edits will no longer be possible. Please see: https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/wikis/Wiki-shutdown-plan for the plan.
Difference between revisions of "EDT:EGL Language Operators and Expressions"
(→Operators and expressions (Table 7)) |
|||
| Line 3: | Line 3: | ||
== Operators and expressions (Table 7) == | == Operators and expressions (Table 7) == | ||
| − | {| | + | {| cellspacing="1" cellpadding="1" border="1" style="width: 496px; height: 1035px;" |
|- | |- | ||
| bgcolor="#999999" align="center" | '''''Operators and expressions<sup>1</sup>''''' | | bgcolor="#999999" align="center" | '''''Operators and expressions<sup>1</sup>''''' | ||
| Line 106: | Line 106: | ||
|- | |- | ||
| bgcolor="#cccccc" | ''bitwise (& | Xor)<sup>5</sup>'' | | bgcolor="#cccccc" | ''bitwise (& | Xor)<sup>5</sup>'' | ||
| − | | done | + | | done |
| 0.5d<br> | | 0.5d<br> | ||
| 0.25d<br> | | 0.25d<br> | ||
|- | |- | ||
| bgcolor="#cccccc" | ''assigning bitwise (&= |= Xor=)<sup>5</sup>'' | | bgcolor="#cccccc" | ''assigning bitwise (&= |= Xor=)<sup>5</sup>'' | ||
| − | | done | + | | done |
| 0.5d<br> | | 0.5d<br> | ||
| 0.5d<br> | | 0.5d<br> | ||
| Line 119: | Line 119: | ||
[https://bugs.eclipse.org/bugs/show_bug.cgi?id=352742 Validation needs to allow these operators] | [https://bugs.eclipse.org/bugs/show_bug.cgi?id=352742 Validation needs to allow these operators] | ||
| − | | bgcolor="#ffff00" | 0.5d | + | | bgcolor="#ffff00" | 0.5d |
| bgcolor="#ffff00" | 0.5d | | bgcolor="#ffff00" | 0.5d | ||
|- | |- | ||
| Line 134: | Line 134: | ||
| bgcolor="#ffff00" | ''like matches<sup>8</sup>'' | | bgcolor="#ffff00" | ''like matches<sup>8</sup>'' | ||
| bgcolor="#ffff00" | <br>1d | | bgcolor="#ffff00" | <br>1d | ||
| − | | bgcolor="#ffff00" | | + | | bgcolor="#ffff00" | done<br>(see [https://bugs.eclipse.org/bugs/show_bug.cgi?id=352939 IR bug]) |
| bgcolor="#ffff00" | N/S | | bgcolor="#ffff00" | N/S | ||
|} | |} | ||
Revision as of 08:06, 24 July 2011
Please see the parent of this page, EDT:EGL Language.
Operators and expressions (Table 7)
| Operators and expressions1 | Core | JavaScript | Java |
| . (member access) | done |
done |
done |
| = | done |
done |
done |
| function invocation | done |
done |
done |
| new | done |
done |
done |
| { } (set-values block) | done |
0.5d |
done |
| @ | done |
done (no work for generators) |
done (no work for generators) |
| [ ] (array access) | done |
done |
done |
| [ ] (dynamic access) | done |
1d |
1d |
| [ ] (substring)2 | 1d |
done |
done |
| isa3 | 1d |
1d |
1d |
| as3 | see isa |
done |
1d |
| unary (~)4, 5 | done |
0.5d |
0.5d |
| unary (+ - !) | done | done | done |
| math (+ - * / % **)9 | done |
1d |
done |
| assigning math (+= -= *= /= %= **=)9 | done |
0.5d |
done |
| :: | done |
0.5d |
0.5d |
| ?: | done |
0.5d |
0.5d |
| logical (And Or && ||) | done |
done |
done |
| comparison (< > <= >= == !=) | done |
2d |
2d |
| bitwise (& | Xor)5 | done | 0.5d |
0.25d |
| assigning bitwise (&= |= Xor=)5 | done | 0.5d |
0.5d |
| bit shifting (<< >> >>> <<= >>= >>>=)4,5 | 2d | 0.5d | 0.5d |
| if-then-else (condition ? val1 : val2)6 | 3d |
0.5d |
0.5d |
| in7 | 1d | N/S | N/S |
| like matches8 | 1d |
done (see IR bug) |
N/S |
Notes on Table 7
- We'll document error conditions of operators and expressions, and their resulting exceptions. Whenever possible this documentation will be comments in the EGL source file for a type.
- Substrings are immutable, so they can't be the target of an assignment or the argument to an inout parameter.
- The type cannot be a nullable type. Nullability is not part of a type signature.
- There are new bitwise operators in EDT. ~ is a bitwise NOT (also called the compliment), << is a left shift, >> is a right shift where the leftmost bits become zero, >>> is a right shift where the sign is copied into the leftmost bits.
- Bitwise operators are only supported on values of type int.
- The if-then-else operator is borrowed from languages like C and Java. The condition's type must be boolean. The two values must have the same type.
- We'll have functions in the array type to provide similar behavior.
- We'll have functions in the string type to provide similar behavior.
- Date/time math is not supported in EDT. Functions on the date and timestamp types provide similar behavior.