Add JSON parsing support to qmake.

Add qjson* implementation files from corelib/json
to the qmake build. Add a read-only compile mode,
enabled by defining QT_JSON_READONLY.

Add qmake built-in function parseJson(file, into)
which parses a json file into the given variable.

qmake uses a flat key -> value-list implementation
for storing variables, which means that some hackery
is need to represent arbitrarily nested JSON. Use a
special "_KEYS_" variable for arrays and objects:

Arrays:
["item1", "item2"]
$${array._KEYS_} -> 0 1 2
$${array.0} -> "item1"
$${array.1} -> "item2"

Objects:
{ "key1" : "value1", "key2" : "value2" }
$${object._KEYS_} -> key1 key2
$${object.key1} -> value1
$${object.key2} -> value2

Change-Id: I0aa2e4e4ae14fa25be8242bc16d3cffce32504d2
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 15 insertions, 2 deletions

diff --git a/qmake/qmake.pri b/qmake/qmake.pri
index 39959efe7b..5012bd0206 100644
--- a/qmake/qmake.pri
+++ b/qmake/qmake.pri
@@ -83,7 +83,13 @@ bootstrap { #Qt code
         qvsnprintf.cpp \
         qxmlstream.cpp \
         qxmlutils.cpp \
-        qlogging.cpp
+        qlogging.cpp \
+        qjson.cpp \
+        qjsondocument.cpp \
+        qjsonparser.cpp \
+        qjsonarray.cpp \
+        qjsonobject.cpp \
+        qjsonvalue.cpp
 
    HEADERS+= \
         qbitarray.h \
@@ -126,7 +132,14 @@ bootstrap { #Qt code
         quuid.h \
         qvector.h \
         qxmlstream.h \
-        qxmlutils.h
+        qxmlutils.h \
+        qjson.h \
+        qjsondocument.h \
+        qjsonparser.h \
+        qjsonwriter.h \
+        qjsonarray.h \
+        qjsonobject.h \
+        qjsonvalue.h
 
     unix {
         SOURCES += qfilesystemengine_unix.cpp qfilesystemiterator_unix.cpp qfsfileengine_unix.cpp