1# $NetBSD: varparse-errors.mk,v 1.9 2023/06/01 20:56:35 rillig Exp $ 2 3# Tests for parsing and evaluating all kinds of variable expressions. 4# 5# This is the basis for redesigning the error handling in Var_Parse and 6# Var_Subst, collecting typical and not so typical use cases. 7# 8# See also: 9# Var_Parse 10# Var_Subst 11 12PLAIN= plain value 13 14LITERAL_DOLLAR= To get a dollar, double $$ it. 15 16INDIRECT= An ${:Uindirect} value. 17 18REF_UNDEF= A reference to an ${UNDEF}undefined variable. 19 20ERR_UNCLOSED= An ${UNCLOSED variable expression. 21 22ERR_BAD_MOD= An ${:Uindirect:Z} expression with an unknown modifier. 23 24ERR_EVAL= An evaluation error ${:Uvalue:C,.,\3,}. 25 26# In a conditional, a variable expression that is not enclosed in quotes is 27# expanded using the mode VARE_UNDEFERR. 28# The variable itself must be defined. 29# It may refer to undefined variables though. 30.if ${REF_UNDEF} != "A reference to an undefined variable." 31. error 32.endif 33 34# As of 2020-12-01, errors in the variable name are silently ignored. 35# Since var.c 1.754 from 2020-12-20, unknown modifiers at parse time result 36# in an error message and a non-zero exit status. 37# expect+1: Unknown modifier "Z" 38VAR.${:U:Z}= unknown modifier in the variable name 39.if ${VAR.} != "unknown modifier in the variable name" 40. error 41.endif 42 43# As of 2020-12-01, errors in the variable name are silently ignored. 44# Since var.c 1.754 from 2020-12-20, unknown modifiers at parse time result 45# in an error message and a non-zero exit status. 46# expect+1: Unknown modifier "Z" 47VAR.${:U:Z}post= unknown modifier with text in the variable name 48.if ${VAR.post} != "unknown modifier with text in the variable name" 49. error 50.endif 51 52# Demonstrate an edge case in which the 'static' for 'errorReported' in 53# Var_Subst actually makes a difference, preventing "a plethora of messages". 54# Given that this is an edge case and the error message is wrong and thus 55# misleading anyway, that piece of code is probably not necessary. The wrong 56# condition was added in var.c 1.185 from 2014-05-19. 57# 58# To trigger this difference, the variable assignment must use the assignment 59# operator ':=' to make VarEvalMode_ShouldKeepUndef return true. There must 60# be 2 expressions that create a parse error, which in this case is ':OX'. 61# These expressions must be nested in some way. The below expressions are 62# minimal, that is, removing any part of it destroys the effect. 63# 64# Without the 'static', there would be one more message like this: 65# Undefined variable "${:U:OX" 66# 67#.MAKEFLAGS: -dv 68IND= ${:OX} 69# expect+2: Undefined variable "${:U:OX" 70# expect+1: Undefined variable "${:U:OX" 71_:= ${:U:OX:U${IND}} ${:U:OX:U${IND}} 72#.MAKEFLAGS: -d0 73 74 75# Before var.c 1.032 from 2022-08-24, make complained about 'Unknown modifier' 76# or 'Bad modifier' when in fact the modifier was entirely correct, it was 77# just not delimited by either ':' or '}' but instead by '\0'. 78UNCLOSED:= ${:U:Q 79UNCLOSED:= ${:U:sh 80UNCLOSED:= ${:U:tA 81UNCLOSED:= ${:U:tsX 82UNCLOSED:= ${:U:ts 83UNCLOSED:= ${:U:ts\040 84UNCLOSED:= ${:U:u 85UNCLOSED:= ${:U:H 86UNCLOSED:= ${:U:[1] 87UNCLOSED:= ${:U:hash 88UNCLOSED:= ${:U:range 89UNCLOSED:= ${:U:_ 90UNCLOSED:= ${:U:gmtime 91UNCLOSED:= ${:U:localtime 92