return res
end
+ # Generates a NativeString instance fully escaped in C-style \xHH fashion
+ fun native_string_instance(ns: NativeString, len: Int): RuntimeVariable do
+ var mtype = mmodule.native_string_type
+ var nat = new_var(mtype)
+ var byte_esc = new Buffer.with_cap(len * 4)
+ for i in [0 .. len[ do
+ byte_esc.append("\\x{ns[i].to_s.substring_from(2)}")
+ end
+ self.add("{nat} = \"{byte_esc}\";")
+ return nat
+ end
+
# Generate a string value
fun string_instance(string: String): RuntimeVariable
do
end
end
+redef class AugmentedStringFormExpr
+ # Factorize the making of a `Regex` object from a literal prefixed string
+ protected fun make_re(v: AbstractCompilerVisitor, rs: RuntimeVariable): nullable RuntimeVariable do
+ var re = to_re
+ assert re != null
+ var res = v.compile_callsite(re, [rs])
+ if res == null then
+ print "Cannot call property `to_re` on {self}"
+ abort
+ end
+ for i in suffix.chars do
+ if i == 'i' then
+ var ign = ignore_case
+ assert ign != null
+ v.compile_callsite(ign, [res, v.bool_instance(true)])
+ continue
+ end
+ if i == 'm' then
+ var nl = newline
+ assert nl != null
+ v.compile_callsite(nl, [res, v.bool_instance(true)])
+ continue
+ end
+ if i == 'b' then
+ var ext = extended
+ assert ext != null
+ v.compile_callsite(ext, [res, v.bool_instance(false)])
+ continue
+ end
+ # Should not happen, this needs to be updated
+ # along with the addition of new suffixes
+ abort
+ end
+ return res
+ end
+end
+
redef class AStringFormExpr
- redef fun expr(v) do return v.string_instance(self.value.as(not null))
+ redef fun expr(v) do return v.string_instance(value)
+end
+
+redef class AStringExpr
+ redef fun expr(v) do
+ var s = v.string_instance(value)
+ if is_string then return s
+ if is_bytestring then
+ var ns = v.native_string_instance(bytes.items, bytes.length)
+ var ln = v.int_instance(bytes.length)
+ var cs = to_bytes_with_copy
+ assert cs != null
+ var res = v.compile_callsite(cs, [ns, ln])
+ assert res != null
+ s = res
+ else if is_re then
+ var res = make_re(v, s)
+ assert res != null
+ s = res
+ else
+ print "Unimplemented prefix or suffix for {self}"
+ abort
+ end
+ return s
+ end
end
redef class ASuperstringExpr
redef fun expr(v)
do
- var type_string = mtype.as(not null)
+ var type_string = v.mmodule.string_type
# Collect elements of the superstring
var array = new Array[AExpr]
# Fast join the native string to get the result
var res = v.send(v.get_property("native_to_s", a.mtype), [a])
+ assert res != null
+
+ if is_re then res = make_re(v, res)
# We finish to work with the native array,
# so store it so that it can be reused
v.add("{varonce} = {a};")
+
return res
end
end