introduce qlalr feature

this makes it possible to compile grammars at build time.

Change-Id: Ia74383c4f29873ee7324bd5f14d72ef14faef460
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/mkspecs/features/qlalr.prf b/mkspecs/features/qlalr.prf
new file mode 100644
index 0000000000..e5e4b87802
--- /dev/null
+++ b/mkspecs/features/qlalr.prf
@@ -0,0 +1,49 @@
+qtPrepareTool(QMAKE_QLALR, qlalr)
+
+isEmpty(QLALR_DIR): QLALR_DIR = .
+
+!isEmpty(QLALRSOURCES) {
+    INCLUDEPATH += $$absolute_path($$QLALR_DIR, $$OUT_PWD)
+}
+
+for (s, QLALRSOURCES) {
+    sf = $$absolute_path($$s, $$_PRO_FILE_PWD_)
+    QMAKE_INTERNAL_INCLUDED_FILES += $$sf
+    sfl = $$cat($$sf, lines)
+    parser = $$lower($$member($$list($$find(sfl, "^%parser\\s")), 1))
+    isEmpty(parser): error("Could not extract %parser from $$sf")
+    decl = $$member($$list($$find(sfl, "^%decl\\s")), 1)
+    isEmpty(decl): error("Could not extract %decl from $$sf")
+    impl = $$member($$list($$find(sfl, "^%impl\\s")), 1)
+    isEmpty(impl): error("Could not extract %impl from $$sf")
+    base = qlalr_$$replace(sf, ^.*/([^./]+)[^/]*$, \\1)
+
+    invar = $$upper($$base)_SOURCES
+    $$invar = $$sf
+    $${base}.input = $$invar
+    $${base}.output = $$QLALR_DIR/$${parser}.cpp
+    $${base}.variable_out = GENERATED_SOURCES
+    $${base}.commands = $$QMAKE_QLALR $$QMAKE_QLALRFLAGS ${QMAKE_FILE_IN}
+    silent: $${base}.commands = @echo qlalr ${QMAKE_FILE_IN} && $${base}.commands
+    $${base}.name = QLALR ${QMAKE_FILE_IN}
+
+    $${base}_h.input = $$invar
+    $${base}_h.output = $$QLALR_DIR/$${parser}_p.h
+    $${base}_h.CONFIG = no_link
+    $${base}_h.depends = $$QLALR_DIR/$${parser}.cpp
+    $${base}_h.commands = $$escape_expand(\\n)   # force creation of rule
+
+    $${base}_decl.input = $$invar
+    $${base}_decl.output = $$QLALR_DIR/$${decl}
+    $${base}_decl.CONFIG = no_link
+    $${base}_decl.depends = $$QLALR_DIR/$${parser}.cpp
+    $${base}_decl.commands = $$escape_expand(\\n)   # force creation of rule
+
+    $${base}_impl.input = $$invar
+    $${base}_impl.output = $$QLALR_DIR/$${impl}
+    $${base}_impl.variable_out = GENERATED_SOURCES
+    $${base}_impl.depends = $$QLALR_DIR/$${parser}.cpp
+    $${base}_impl.commands = $$escape_expand(\\n)   # force creation of rule
+
+    QMAKE_EXTRA_COMPILERS += $$base $${base}_h $${base}_decl $${base}_impl
+}