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Difference between revisions of "EDT:EGL Language"
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*"N/S" means Not Supported. | *"N/S" means Not Supported. | ||
*Anything that exists in RBD but isn't mentioned here is not included in EDT.<br> | *Anything that exists in RBD but isn't mentioned here is not included in EDT.<br> | ||
| − | *The work in the Core category includes the parser, model, and validation.<br> | + | *The work in the Core category includes the parser, model, and validation.<br> |
| + | *'''Developers:''' include a link to Bugzilla for features not done yet, and mark items "Done" when you're finished.<br> | ||
== Table 1: Part Types == | == Table 1: Part Types == | ||
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| − | | bgcolor="#cccccc" | ''Function<sup>2</sup>'' | + | | bgcolor="#cccccc" | ''Function<sup>2, 5</sup>'' |
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| − | | bgcolor="#cccccc" | ''Top-level function<sup>2</sup>'' | + | | bgcolor="#cccccc" | ''Top-level function<sup>2, 5</sup>'' |
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| N/S | | N/S | ||
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#See also Table 2: Function Parameters.<br> | #See also Table 2: Function Parameters.<br> | ||
#Interfaces can be implemented by services and handlers (every kind of "logic part" which can be instantiated).<br> | #Interfaces can be implemented by services and handlers (every kind of "logic part" which can be instantiated).<br> | ||
| − | #There are no called programs. Use libraries for "local calls" and services for "remote calls".<br> | + | #There are no called programs. Use libraries for "local calls" and services for "remote calls".<br> |
| + | #We intend to support function overloading in all implementations, even JavaScript.<br> | ||
== Table 2: Function Parameters == | == Table 2: Function Parameters == | ||
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Revision as of 12:55, 20 June 2011
Contents
General Notes
- This document is not finished yet!
- "N/S" means Not Supported.
- Anything that exists in RBD but isn't mentioned here is not included in EDT.
- The work in the Core category includes the parser, model, and validation.
- Developers: include a link to Bugzilla for features not done yet, and mark items "Done" when you're finished.
Table 1: Part Types
| Part Types | Core | JavaScript | Java | Debug |
| DataItem1 | |
|
|
|
| Function2, 5 | |
|
|
|
| Top-level function2, 5 | |
|
|
|
| Delegate2 | |
|
|
|
| Record |
|
|
|
|
| Structed Record |
|
N/S | N/S | N/S |
| ExternalType |
|
|
|
|
| Handler |
|
|
|
|
| Library |
|
|
|
|
| Service |
|
|
|
|
| Interface3 |
|
|
|
|
| Enumeration |
|
|
|
|
| Program4 |
|
N/S |
|
|
| Array |
|
|
|
|
| Nullability |
|
|
|
|
| DataTable |
|
N/S | N/S | N/S |
| Form |
|
N/S | N/S | N/S |
Notes on Table 1
- In RBD a DataItem can only be used for primitive types. In EDT it can be used for any type.
- See also Table 2: Function Parameters.
- Interfaces can be implemented by services and handlers (every kind of "logic part" which can be instantiated).
- There are no called programs. Use libraries for "local calls" and services for "remote calls".
- We intend to support function overloading in all implementations, even JavaScript.
Table 2: Function Parameters
| Function Parameters | Core | JavaScript | Java | Debug |
| In1 | |
|
|
|
| Out | |
|
|
|
| Inout1 | |
|
|
|
| Ellipsis | |
|
|
|
| Const | |
|
|
|
| Field |
|
N/S | N/S | N/S |
| SqlNullable |
|
N/S | N/S | N/S |
Notes on Table 2
- The default parameter modifier is In for references and Inout for values.
Table 3: Primitive Types
| Primitive Types | Core | JavaScript | Java | Debug |
| Any | |
|
|
|
| Boolean | |
|
|
|
| Dictionary | |
|
|
|
| String(N)1 | |
|
|
|
| String2 | |
|
|
|
| Timestamp3 | |
|
|
|
| Blob | |
N/S |
|
|
| Clob | |
N/S |
|
|
| Smallint | |
|
|
|
| Int | |
|
|
|
| Bigint | |
|
|
|
| Decimal(N,M) | |
|
|
|
| Decimal(N) | |
|
|
|
| Decimal4 | |
|
|
|
| Float | |
|
|
|
| Smallfloat | |
|
|
|
| Number5 | |
|
|
|
| Byte(N)6 | |
|
|
|
| Byte7 | |
|
|
|
| Arraydictionary |
|
N/S | N/S | N/S |
| Char |
|
N/S | N/S | N/S |
| Dbchar |
|
N/S | N/S | N/S |
| Mbchar |
|
N/S | N/S | N/S |
| Unicode |
|
N/S | N/S | N/S |
| Hex6 |
|
N/S | N/S | N/S |
| Date3 |
|
N/S | N/S | N/S |
| Time3 |
|
N/S | N/S | N/S |
| Interval3 |
|
N/S | N/S | N/S |
| Bin |
|
N/S | N/S | N/S |
| Num |
|
N/S | N/S | N/S |
| Numc |
|
N/S | N/S | N/S |
| Pacf |
|
N/S | N/S | N/S |
| Money |
|
N/S | N/S | N/S |
Notes on Table 3
- String(N) is a reference type in EDT.
- String is a reference type in EDT.
- Timestamp is the only supported date/time type. Use it in place of RBD's date, time, and interval. Date/time math produces timestamps or numbers.
- Decimal with no length or decimals is a reference type with an immutable value.
- Number is a reference type with an immutable value. Unlike in RBD, number variables can be declared anywhere a variable declaration is allowed.
- Byte(N) is a value type similar to RBD's hex. N indicates the number of bytes in the value.
- Byte with no length is a reference type with an immutable value of any length.
Table 4: Statements
| Statements | Core | JavaScript | Java | Debug |
| Variable declaration | |
|
|
|
| Const declaration | |
|
|
|
| Assignment | |
|
|
|
| Move1 | |
N/S |
N/S |
N/S |
| Return | |
|
|
|
| Function invocation | |
|
|
|
| Call2 | |
|
|
|
| Label | |
|
|
|
| Transfer | |
N/S |
|
|
| Throw | |
|
|
|
| Try | |
|
|
|
| Case | |
|
|
|
| If | |
|
|
|
| While | |
|
|
|
| For | |
|
|
|
| Foreach3 | |
|
|
|
| Exit | |
|
|
|
| Continue | |
|
|
|
| Empty statement (a semicolon) | |
|
|
|
| Add | |
N/S |
|
|
| Close | |
N/S |
|
|
| Delete | |
N/S |
|
|
| Get | |
N/S |
|
|
| Replace | |
N/S |
|
|
| Execute4 | |
N/S |
|
|
| Prepare4 | |
N/S |
|
|
| Open4 | |
N/S |
|
|
| FreeSQL4 | |
N/S |
|
|
| Goto |
|
N/S | N/S | N/S |
| Set |
|
N/S | N/S | N/S |
| Converse |
|
N/S | N/S | N/S |
| Display |
|
N/S | N/S | N/S |
| Print |
|
N/S | N/S | N/S |
| Forward |
|
N/S | N/S | N/S |
| Show |
|
N/S | N/S | N/S |
| OpenUI |
|
N/S | N/S | N/S |
Notes on Table 4
- In RBD, a move statement between two references does a deep copy. Reference types should include a deep copy function to provide the same functionality in EDT.
- EDT doesn't have called programs, but services and native programs can be called.
- EDT's foreach statement will support iterating over an array.
- Support for these statements is tentative, pending the design for JPA in EDT.
What's left...
- Operators and expressions
- Conversions
- Stereotypes
- Annotations
- Language compliance test