errors and warnings / names / E1040

E1040 error

@if condition is not a static condition

area: names (x1xxx)
fails the build: yes
in plain Lua files: reported as W1040

An @if condition isn't static: it reads a runtime value such as a local, or @if is given more than one condition. Conditions may use wowlua:meta paths (flavor, build.debug, features.x, config.x), constants and literals. On an import, only wowlua:meta paths and literals are allowed, not consts, because each flavor's import graph is built before constants are evaluated. For a runtime decision, use an ordinary if.

Example

× failswowlua

local verbose = true @if(verbose)local function dumpState()    print("state")end

✓ compileswowlua

import build from "wowlua:meta" @if(build.debug)local function dumpState()    print("state")end if build.debug then    dumpState()end

The compiler reports it like this:

error[E1040]: `@if` conditions must be static: `wowlua:meta` paths, constants and literals
  ┌─ src/main.wowlua:3:5
  │
3 │ @if(verbose)
  │     ^^^^^^^ here

code	message
E1039	`@if(flavor …)` in a `.wowlua` file in shared flavor mode
E1020	Reference to a declaration removed by `@if` or static elimination

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terminal

$ wowlua explain E1040
E1040 (error): @if condition is not a static condition

source on GitHub ↗

Example

Related codes

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