| History log of /src/usr.bin/make/unit-tests/parse-var.exp |
| Revision | | Date | Author | Comments |
| 1.7 |
| 18-Feb-2023 |
rillig | make: fix parsing of unevaluated subexpressions with unbalanced '{}'
Since var.c 1.323 from 2020-07-26, modifiers containing unbalanced
braces or parentheses were parsed differently, depending on whether they
were relevant or not.
For example, the expression '${VAR:...}' is enclosed with braces. When
this expression has a modifier ':S,},}},g' that would double each '}' in
that expression, the parser got confused:
If the expression was relevant, the modifier was parsed as usual, taking
into account that the 3 '}' in the modifier are ordinary characters.
If the expression was irrelevant, the parser only counted the '{' and
the '}', without taking into account that a '}' might be escaped by a
'\' or be an ordinary character. Parsing therefore stopped at the first
'}', assuming it would finish the expression '${VAR:S,}'.
This parsing mode of only counting balanced '{' and '}' makes sense for
the modifier ':@var@...@', which expands each word of the expression
using the template from the '...'. These templates tend to be simple
enough that counting the '{' and '}' suffices.
|
| 1.6 |
| 14-Feb-2023 |
rillig | make: remove redundant type VarParseResult
No functional change.
|
| 1.5 |
| 25-Sep-2022 |
rillig | tests/make: document how variable evaluation needs to be tested
It's about 100_000 combinations to cover the basic edge cases.
|
| 1.4 |
| 23-Aug-2022 |
rillig | make: revert parsing of modifier parts (since 2022-08-08)
The modifier ':@var@body@' parses the body in parse-only mode and later
uses Var_Subst on it, in which each literal '$' must be written as '$$'.
Trying to parse the loop body using Var_Parse treated the text
'$${var:-0}' as a single '$' followed by the expression '${var:-0}',
wrongly complaining about the 'Unknown modifier "-0"'.
Found by sjg.
|
| 1.3 |
| 08-Aug-2022 |
rillig | make: fix parsing of modifiers containing unbalanced subexpressions
|
| 1.2 |
| 06-Aug-2022 |
rillig | tests/make: demonstrate bug in parsing of modifier parts
In the modifier ':S,from,to,', parsing the two parts 'from' and 'to' of
the modifier differs depending on whether the expression is actually
evaluated or merely parsed. This not only applies to the ':S' modifier,
but also to ':C', ':@var@body@', ':!cmd!', ':[...]', ':?:', '::=' and
':from=to'.
|
| 1.1 |
| 04-Oct-2020 |
rillig | make(1): add tests for parsing assignments, especially :sh
Luckily nobody uses the :sh variable assignment modifier since its
syntactical variant != is simpler.
|
