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docs/develop/qstr.rst: Add documentation for string interning.

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This commit is contained in:
Jim Mussared
2019-09-26 20:25:39 +10:00
committed by Damien George
parent 25a9bccdee
commit 4ddd46e6cf
4 changed files with 115 additions and 0 deletions
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1
py/mkrules.mk
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@@ -70,6 +70,7 @@ $(OBJ): | $(HEADER_BUILD)/qstrdefs.generated.h $(HEADER_BUILD)/mpversion.h
# - if anything in QSTR_GLOBAL_DEPENDENCIES is newer, then process all source files ($^)
# - else, if list of newer prerequisites ($?) is not empty, then process just these ($?)
# - else, process all source files ($^) [this covers "make -B" which can set $? to empty]
# See more information about this process in docs/develop/qstr.rst.
$(HEADER_BUILD)/qstr.i.last: $(SRC_QSTR) $(QSTR_GLOBAL_DEPENDENCIES) | $(QSTR_GLOBAL_REQUIREMENTS)
$(ECHO) "GEN $@"
$(Q)$(CPP) $(QSTR_GEN_EXTRA_CFLAGS) $(CFLAGS) $(if $(filter $?,$(QSTR_GLOBAL_DEPENDENCIES)),$^,$(if $?,$?,$^)) >$(HEADER_BUILD)/qstr.i.last

1
py/py.mk
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@@ -231,6 +231,7 @@ MPCONFIGPORT_MK = $(wildcard mpconfigport.mk)
# created before we run the script to generate the .h
# Note: we need to protect the qstr names from the preprocessor, so we wrap
# the lines in "" and then unwrap after the preprocessor is finished.
# See more information about this process in docs/develop/qstr.rst.
$(HEADER_BUILD)/qstrdefs.generated.h: $(PY_QSTR_DEFS) $(QSTR_DEFS) $(QSTR_DEFS_COLLECTED) $(PY_SRC)/makeqstrdata.py mpconfigport.h $(MPCONFIGPORT_MK) $(PY_SRC)/mpconfig.h | $(HEADER_BUILD)
$(ECHO) "GEN $@"
$(Q)$(CAT) $(PY_QSTR_DEFS) $(QSTR_DEFS) $(QSTR_DEFS_COLLECTED) | $(SED) 's/^Q(.*)/"&"/' | $(CPP) $(CFLAGS) - | $(SED) 's/^\"\(Q(.*)\)\"/\1/' > $(HEADER_BUILD)/qstrdefs.preprocessed.h