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# metac: A table-driven preprocessor for C
## Overview
`metac` is my attempt at a C preprocessor that adds the features I would like C to have. It is
inspired by Ryan Fleury's article, see resources below.
### Features
- `@table` keyword for specifying data, eg.
```
@table(name, str) MyEnumTable
{
{ A "A" }
{ B "B" }
{ C "C" }
}
```
- `@expand` keyword for using data from a table, eg.
```
typedef enum
{
@expand(MyEnumTable t)
` MyEnum_$a(a.name),`
MyEnum_Count
} MyEnum;
```
## Build
Run the build script.
```sh
./source/build.sh
```
## Try it out
To chek the usage you can run withuot arguments.
```
./build/metac
Usage: ./build/metac filename [output_filename]
```
Run the program on the example file.
```sh
./build/metac examples/table.c
```
Checkout the newly created `table.meta.c`. This is your metaprogram!
# Resources
- [Ryan Fleury - table-driven code generation](https://www.rfleury.com/p/table-driven-code-generation)
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