Update gen.hpp and editor config

This commit is contained in:
Edward R. Gonzalez 2023-04-04 16:18:30 -04:00
parent eb4f95b84e
commit d93fd462e1
2 changed files with 75 additions and 32 deletions

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@ -18,3 +18,8 @@ indent_size = 4
[*.hpp]
indent_style = tab
indent_size = 4
[*.ps1]
indent_style = tab
indent_size = 4

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@ -6,31 +6,58 @@
AST type checking supports only a small subset of c++.
See the 'ECode' namespace and 'gen API' region to see what is supported.
WHAT IS NOT PROVIDED:
* Macro or template generation : This library is to avoid those, adding support for them
adds unnecessary complexity.
### *WHAT IS NOT PROVIDED*
* Macro or template generation : This library is to avoid those, adding support for them adds unnecessary complexity.
If you desire define them outside the gen_time scopes.
* Modern c++ (STL library) features :
* Expression validation : Execution expressions are defined using the untyped string API.
: There is no parse API for validating expression (possibly will add in the future)
There is no parse API for validating expression (possibly will add in the future)
* Complete file parser DSL : This isn't like the unreal header tool.
Code injection to file or based off a file contents is not supported by the api.
However nothing is stopping you using the library for that purpose.
* Modern c++ (STL library) features
As mentioned in [Usage](#Usage), the user is provided Code objects by calling the interface procedures to generate them or find existing matches.
There are four different of construction of Code ast's the library provides:
* Upfront construction
* Incremental construction
* Parse construction
The AST is managed by the library and provided the user via its interface prodedures.
Notes:
* The allocator definitions used are exposed to the user incase they want to dictate memory usage*
* ASTs are wrapped for the user in a Code struct which essentially a warpper for a AST* type.
* Both AST and Code have member symbols but their data layout is enforced to be POD types.
Data layout of AST struct:
CodeT Type;
bool Readonly;
AST* Parent;
string Name;
string Comment;
union {
array(AST*) Entries;
string Content;
};
*`CodeT` is a typedef for `ECode::Type` which is the type of the enum.*
ASTs can be set to readonly by calling Code's lock() member function.
Adding comments is always available even if the AST is set to readonly.
### There are four sets of interfaces for Code AST generation the library provides
* Upfront
* Incremental
* Parsing
* Untyped
Upfront Construction:
### Upfront Construction
All component ASTs must be previously constructed, and provided on creation of the code AST.
The construction will fail and return InvalidCode otherwise.
API:
Interface :
* def_forward_decl
* def_class
* def_global_body
@ -50,14 +77,19 @@
* def_using
* def_using_namespace
Incremental construction:
### Incremental construction
A Code ast is provided but only completed upfront if all components are provided.
Components are then added using the AST API for adding ASTs:
* code.add( AST* ) // Adds AST with validation.
* code.add_entry( AST* ) // Adds AST entry without validation.
* code.add_content( AST* ) // Adds AST string content without validation.
API:
Code ASTs may be explictly validated at anytime using Code's check() member function.
Interface :
* make_forward_decl
* make_class
* make_global_body
@ -72,10 +104,12 @@
* make_using
* make_using_namespace
Parse construction:
### Parse construction
A string provided to the API is parsed for the intended language construct.
API:
Interface :
* parse_forward_decl
* parse_class
* parse_glboal_body
@ -93,10 +127,12 @@
The parse API treats any execution scope definitions with no validation and are turned into untyped Code ASTs.
This includes the assignmetn of variables; due to the library not yet supporting c/c++ expression parsing.
Untyped constructions:
### Untyped constructions
Code ASTs are constructed using unvalidated strings.
API:
Interface :
* untyped_str
* untyped_fmt
* untyped_token_fmt
@ -105,8 +141,10 @@
whatever context the content existed as an entry within.
Even though thse are not validated from somewhat correct c/c++ syntax or components, it doesn't mean that
Untyped code can be added as any component of a Code AST:
* Untyped code cannot have children, thus there cannot be recursive injection this way.
* Untyped code can only be a child of a parent of body AST, or for values of an assignment.
These restrictions help prevent abuse of untyped code to some extent.
*/