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skeletons: start some technical documentation

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* data/README: Convert to Markdown.
Start documenting some of the macros used in all our skeletons.
Simplify and fix the documentation of the macros in the skeletons.
This commit is contained in:
Akim Demaille
2018-12-04 06:53:36 +01:00
parent f539a56620
commit 999277ddd8
9 changed files with 125 additions and 106 deletions
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3
data/c++.m4
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@@ -523,15 +523,12 @@ m4_define([b4_yytranslate_define],
# b4_lhs_value([TYPE])
# --------------------
# Expansion of $<TYPE>$.
m4_define([b4_lhs_value],
[b4_symbol_value([yyval], [$1])])
# b4_rhs_value(RULE-LENGTH, POS, [TYPE])
# --------------------------------------
# Expansion of $<TYPE>POS, where the current rule has RULE-LENGTH
# symbols on RHS.
# FIXME: Dead code.
m4_define([b4_rhs_value],
[b4_symbol_value([yysemantic_stack_@{($1) - ($2)@}], [$3])])