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f676e74e38
– allow local constants in macros – allow untyped macro parameters with void – treat the name of a function as a pointer to it – add this.function local alias (#118)
30 lines
1.4 KiB
Markdown
30 lines
1.4 KiB
Markdown
[< back to index](../doc_index.md)
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# Predefined constants
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* `byte nullchar` – the null terminator for strings in the default encoding, equivalent to `""z[0]`, can be overriden by the `NULLCHAR` feature
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* `byte nullchar_scr` – the null terminator for strings in the screen encoding, equivalent to `""scrz[0]`, can be overriden by the `NULLCHAR_SCR` feature
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* `null$ nullptr` – the invalid pointer value; the value of the `NULLPTR` feature
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* `bool true`, `bool false` – boolean constants
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* `pointer segment.N.start` – the value of `segment_N_start` from the platform definition
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* `pointer segment.N.codeend` – the value of `segment_N_codeend` from the platform definition
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* `pointer segment.N.datastart` – the value of `segment_N_datastart` from the platform definition
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* `pointer segment.N.end` – the value of `segment_N_end` from the platform definition
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* `pointer segment.N.heapstart` – the address of the first byte in the `N` segment that was not automatically allocated
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* `word segment.N.length` – the number of byte locations between `segment_N_start` and `segment_N_end`, inclusive
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* `byte segment.N.bank` – the value of `segment_N_bank` from the platform definition
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* `byte segment.N.fill` – the value of `segment_N_fill` from the platform definition
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* `this.function` – the alias of the current function (in macros, it resolves to the actual non-macro function that called the macro)
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