SOURCE

foo = if tru 0

EXPECTED

UNDEFINED VARIABLE - expr_if_missing_else.md:1:10:1:13 INCOMPATIBLE IF BRANCHES - expr_if_missing_else.md:1:7:1:7

PROBLEMS

UNDEFINED VARIABLE Nothing is named tru in this scope. Is there an import or exposing missing up-top?

expr_if_missing_else.md:1:10:1:13:

foo = if tru 0

^^^

INCOMPATIBLE IF BRANCHES This if has an else branch with a different type from it's then branch: expr_if_missing_else.md:1:7:

foo = if tru 0

  ^^^^^^^^

The else branch has the type: {}

But the then branch has the type: _Num(size)

All branches in an if must have compatible types.

Note: You can wrap branches in a tag to make them compatible. To learn about tags, see https://www.roc-lang.org/tutorial#tags

TOKENS

LowerIdent,OpAssign,KwIf,LowerIdent,Int,
EndOfFile,

PARSE

(file
	(type-module)
	(statements
		(s-decl
			(p-ident (raw "foo"))
			(e-if-without-else
				(e-ident (raw "tru"))
				(e-int (raw "0"))))))

FORMATTED

NO CHANGE

CANONICALIZE

(can-ir
	(d-let
		(p-assign (ident "foo"))
		(e-if
			(if-branches
				(if-branch
					(e-runtime-error (tag "ident_not_in_scope"))
					(e-num (value "0"))))
			(if-else
				(e-empty_record)))))

TYPES

(inferred-types
	(defs
		(patt (type "Error")))
	(expressions
		(expr (type "Error"))))

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