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# $NetBSD: directive-elif.mk,v 1.7 2020/12/19 19:49:01 rillig Exp $
#
# Tests for the .elif directive.
#
# Misspellings of the .elif directive are not always detected. They are only
# detected if the conditional branch directly above it is taken. In all other
# cases, make skips over the skipped branch as fast as possible, looking only
# at the initial '.' of the line and whether the directive is one of the known
# conditional directives. All other directives are silently ignored, as they
# could be variable assignments or dependency declarations as well, and
# deciding this would cost time.
# TODO: Implementation
# Misspelling '.elsif' below an .if branch that is not taken.
.if 0
. info This branch is not taken.
# As of 2020-12-19, the misspelling is not recognized as a conditional
# directive and is thus silently skipped.
#
# Since the .if condition evaluated to false, this whole branch is not taken.
.elsif 0
. info XXX: This misspelling is not detected.
. info This branch is not taken.
# Even if the misspelling were detected, the branch would not be taken
# since the condition of the '.elsif' evaluates to false as well.
.endif
# Misspelling '.elsif' below an .if branch that is not taken.
.if 0
. info This branch is not taken.
# As of 2020-12-19, the misspelling is not recognized as a conditional
# directive and is thus silently skipped. Since the .if condition evaluated
# to false, this whole branch is not taken.
.elsif 1
. info XXX: This misspelling is not detected.
# If the misspelling were detected, this branch would be taken.
.endif
# Misspelling '.elsif' below an .if branch that is taken.
.if 1
# This misspelling is in an active branch and is therefore detected.
.elsif 0
# The only thing that make detects here is a misspelled directive, make
# doesn't recognize that it was meant to be a conditional directive.
# Therefore the branch continues here, even though the '.elsif' condition
# evaluates to false.
. info This branch is taken.
.endif
# Misspelling '.elsif' below an .if branch that is taken.
.if 1
# As of 2020-12-19, the misspelling is in an active branch and is therefore
# detected.
.elsif 1
# Since both conditions evaluate to true, this branch is taken no matter
# whether make detects a misspelling or not.
. info This branch is taken.
.endif
# Misspelling '.elsif' in a skipped branch below a branch that was taken.
.if 1
. info This branch is taken.
.elif 0
. info This branch is not taken.
.elsif 1
. info XXX: This misspelling is not detected.
.endif
# Misspelling '.elsif' in an .else branch that is not taken.
.if 1
.else
. info This branch is not taken.
.elsif 1
. info XXX: This misspelling is not detected.
.endif
# Misspelling '.elsif' in an .else branch that is taken.
.if 0
.else
.elsif 1
. info This misspelling is detected.
. info This branch is taken because of the .else.
.endif
# Misspellings for .elif in a .elif branch that is not taken.
.if 0
. info This branch is not taken.
.elif 0 # ok
. info This branch is not taken.
.elsif 0
. info XXX: This misspelling is not detected.
. info This branch is not taken.
.elseif 0
. info XXX: This misspelling is not detected.
. info This branch is not taken.
.endif
.info What happens on misspelling in a skipped branch?
.if 0
. info 0-then
.elsif 1
. info XXX: This misspelling is not detected.
. info 1-elsif
.elsif 2
. info XXX: This misspelling is not detected.
. info 2-elsif
.else
. info else
.endif
.info What happens on misspelling in a taken branch?
.if 1
. info 1-then
.elsif 1
. info 1-elsif
.elsif 2
. info 2-elsif
.else
. info else
.endif
# Expect: "if-less elif"
.elif 0
.if 1
.else
# Expect: "warning: extra elif"
.elif
.endif
all:
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