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-rwxr-xr-xext/ripper/tools/preproc.rb20
1 files changed, 17 insertions, 3 deletions
diff --git a/ext/ripper/tools/preproc.rb b/ext/ripper/tools/preproc.rb
index 16449ec81c..8b68579164 100755
--- a/ext/ripper/tools/preproc.rb
+++ b/ext/ripper/tools/preproc.rb
@@ -40,6 +40,7 @@ def main
end
def prelude(f, out)
+ @exprs = {}
while line = f.gets
case line
when %r</\*%%%\*/>
@@ -56,6 +57,16 @@ def prelude(f, out)
when /\A%type/
out << line.sub(/<\w+>/, '<val>')
else
+ if (/^enum lex_state_(?:bits|e) \{/ =~ line)..(/^\}/ =~ line)
+ case line
+ when /^\s*(EXPR_\w+),\s+\/\*(.+)\*\//
+ @exprs[$1.chomp("_bit")] = $2.strip
+ when /^\s*(EXPR_\w+)\s+=\s+(.+)$/
+ name = $1
+ val = $2.chomp(",")
+ @exprs[name] = "equals to " + (val.start_with?("(") ? "<tt>#{val}</tt>" : "+#{val}+")
+ end
+ end
out << line
end
end
@@ -84,9 +95,12 @@ def grammar(f, out)
end
def usercode(f, out)
- while line = f.gets
- out << line
- end
+ require 'erb'
+ compiler = ERB::Compiler.new('%-')
+ compiler.put_cmd = compiler.insert_cmd = "out.<<"
+ lineno = f.lineno
+ src, = compiler.compile(f.read)
+ eval(src, binding, f.path, lineno)
end
main