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authorBoris Kolpackov <boris@codesynthesis.com>2021-05-31 16:32:40 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2021-06-08 15:43:08 +0200
commit0baeb5209d3a111a53070c032d7cdb1e609e3516 (patch)
tree61e34e8998b5724274aa2c477608d9fc67b39c1a /libbuild2/build/script
parent1346f4cd0d20a5dc7e0471edbbb6ce00f2da5c18 (diff)
Implement ad hoc regex pattern rule support
An ad hoc pattern rule consists of a pattern that mimics a dependency declaration followed by one or more recipes. For example: exe{~'/(.*)/'}: cxx{~'/\1/'} {{ $cxx.path -o $path($>) $path($<[0]) }} If a pattern matches a dependency declaration of a target, then the recipe is used to perform the corresponding operation on this target. For example, the following dependency declaration matches the above pattern which means the rule's recipe will be used to update this target: exe{hello}: cxx{hello} While the following declarations do not match the above pattern: exe{hello}: c{hello} # Type mismatch. exe{hello}: cxx{howdy} # Name mismatch. On the left hand side of `:` in the pattern we can have a single target or an ad hoc target group. The single target or the first (primary) ad hoc group member must be a regex pattern (~). The rest of the ad hoc group members can be patterns or substitutions (^). For example: <exe{~'/(.*)/'} file{^'/\1.map/'}>: cxx{~'/\1/'} {{ $cxx.path -o $path($>[0]) "-Wl,-Map=$path($>[1])" $path($<[0]) }} On the left hand side of `:` in the pattern we have prerequisites which can be patterns, substitutions, or non-patterns. For example: <exe{~'/(.*)/'} file{^'/\1.map/'}>: cxx{~'/\1/'} hxx{^'/\1/'} hxx{common} {{ $cxx.path -o $path($>[0]) "-Wl,-Map=$path($>[1])" $path($<[0]) }} Substitutions on the left hand side of `:` and substitutions and non-patterns on the right hand side are added to the dependency declaration. For example, given the above rule and dependency declaration, the effective dependency is going to be: <exe{hello} file{hello.map>: cxx{hello} hxx{hello} hxx{common}
Diffstat (limited to 'libbuild2/build/script')
-rw-r--r--libbuild2/build/script/parser.cxx4
-rw-r--r--libbuild2/build/script/parser.hxx4
-rw-r--r--libbuild2/build/script/parser.test.cxx2
3 files changed, 6 insertions, 4 deletions
diff --git a/libbuild2/build/script/parser.cxx b/libbuild2/build/script/parser.cxx
index 063ec68..9194e30 100644
--- a/libbuild2/build/script/parser.cxx
+++ b/libbuild2/build/script/parser.cxx
@@ -27,7 +27,9 @@ namespace build2
//
script parser::
- pre_parse (const scope& bs, const target* tg, const adhoc_actions& as,
+ pre_parse (const scope& bs,
+ const target* tg,
+ const small_vector<action, 1>& as,
istream& is, const path_name& pn, uint64_t line,
optional<string> diag, const location& diag_loc)
{
diff --git a/libbuild2/build/script/parser.hxx b/libbuild2/build/script/parser.hxx
index af43e35..8c787f9 100644
--- a/libbuild2/build/script/parser.hxx
+++ b/libbuild2/build/script/parser.hxx
@@ -36,7 +36,7 @@ namespace build2
// targets.
//
script
- pre_parse (const scope&, const target*, const adhoc_actions& acts,
+ pre_parse (const scope&, const target*, const small_vector<action, 1>&,
istream&, const path_name&, uint64_t line,
optional<string> diag_name, const location& diag_loc);
@@ -144,7 +144,7 @@ namespace build2
protected:
script* script_;
- const adhoc_actions* actions_; // Non-NULL during pre-parsing.
+ const small_vector<action, 1>* actions_; // Non-NULL during pre-parse.
// True if performing update is one of the actions. Only set for the
// pre-parse mode.
diff --git a/libbuild2/build/script/parser.test.cxx b/libbuild2/build/script/parser.test.cxx
index c1ba1d1..0bc1c5d 100644
--- a/libbuild2/build/script/parser.test.cxx
+++ b/libbuild2/build/script/parser.test.cxx
@@ -201,7 +201,7 @@ namespace build2
tt.path (path ("driver"));
- adhoc_actions acts {perform_update_id};
+ small_vector<action, 1> acts {perform_update_id};
// Parse and run.
//