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Allow no expression in return

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This commit is contained in:
Étienne Fildadut 2023-12-28 13:04:29 +01:00
parent 53c1c764ba
commit f574e6a775
5 changed files with 25 additions and 6 deletions
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21
parser/expression/primary/prefix/prefix_maybe_nil_right.lua Normal file
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@ -0,0 +1,21 @@
local prefix = require("parser.expression.primary.prefix.prefix")
local escape = require("common").escape
local expression_to_ast = require("parser.expression.to_ast")
local ast = require("ast")
local Nil = ast.Nil
return prefix {
parse = function(self, source, str, limit_pattern)
local source_start = source:clone()
local escaped = escape(self.operator)
local sright = source:consume(str:match("^("..escaped..")(.*)$"))
local s, right, rem = pcall(expression_to_ast, source, sright, limit_pattern, self.priority)
if not s then
return self:build_ast(Nil:new()):set_source(source_start), sright
else
return self:build_ast(right):set_source(source_start), rem
end
end,
}

4
parser/expression/primary/prefix/return.lua
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@ -1,11 +1,11 @@
local prefix = require("parser.expression.primary.prefix.prefix")
local prefix_maybe_nil_right = require("parser.expression.primary.prefix.prefix_maybe_nil_right")
local ast = require("ast")
local Return = ast.Return
local operator_priority = require("common").operator_priority
return prefix {
return prefix_maybe_nil_right {
operator = "@",
priority = operator_priority["@_"],