# Copyright (C) 2016 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Test expression parsing and evaluation that requires Rust compiler.

load_lib rust-support.exp
if {[skip_rust_tests]} {
    continue
}

standard_testfile .rs
if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug rust}]} {
    return -1
}

set line [gdb_get_line_number "set breakpoint here"]
if {![runto ${srcfile}:$line]} {
    untested "could not run to breakpoint"
    return -1
}

gdb_test "print a" " = \\(\\)"
gdb_test "ptype a" " = \\(\\)"
gdb_test "print sizeof(a)" " = 0"

gdb_test "print b" " = \\\[\\\]"
gdb_test "ptype b" " = \\\[i32; 0\\\]"
gdb_test "print *(&b as *const \[i32; 0\])" " = \\\[\\\]"
gdb_test "print *(&b as *const \[i32; 0_0\])" " = \\\[\\\]"

gdb_test "print c" " = 99"
gdb_test "ptype c" " = i32"
gdb_test "print sizeof(c)" " = 4"

gdb_test "print c = 87" " = \\(\\)"
gdb_test "print c" " = 87"
gdb_test "print c += 3" " = \\(\\)"
gdb_test "print c" " = 90"
gdb_test "print c -= 90" " = \\(\\)"
gdb_test "print c" " = 0"
gdb_test "print *&c" " = 0"
gdb_test "print *(&c as &i32)" " = 0"
gdb_test "print *(&c as *const i32)" " = 0"
gdb_test "print *(&c as *mut i32)" " = 0"

gdb_test "print j" " = simple::Unit"
gdb_test "ptype j" " = struct simple::Unit"
gdb_test "print j2" " = simple::Unit"
gdb_test "ptype j2" " = struct simple::Unit"
gdb_test "print simple::Unit" " = simple::Unit"
gdb_test "print simple::Unit{}" " = simple::Unit"

gdb_test "print g" " = \\(u8 \\(\\*\\)\\\[6\\\]\\) $hex b\"hi bob\""
gdb_test "ptype g" " = u8 \\(\\*\\)\\\[6\\\]"

gdb_test "print v" " = simple::Something::Three"
gdb_test_sequence "ptype v" "" {
    " = enum simple::Something \\{"
    "  One,"
    "  Two,"
    "  Three,"
    "\\}"
}

gdb_test "print w" " = \\\[1, 2, 3, 4\\\]"
gdb_test "ptype w" " = \\\[i32; 4\\\]"
gdb_test "print w\[2\]" " = 3"
gdb_test "print w\[2\] @ 2" " = \\\[3, 4\\\]"
gdb_test "print w_ptr\[2\]" " = 3"
gdb_test "print fromslice" " = 3"
gdb_test "print slice\[0\]" " = 3"
gdb_test "print slice as &\[i32\]\[0\]" " = 3"

gdb_test "print x" " = \\(23, 25\\.5\\)"
gdb_test "ptype x" " = \\(i32, f64\\)"
gdb_test "print x as (i32,f64)" " = \\(23, 25\\.5\\)"

gdb_test "print y" " = simple::HiBob \\{field1: 7, field2: 8\\}"
gdb_test_sequence "ptype y" "" {
    " = struct simple::HiBob \\{"
    "  field1: i32,"
    "  field2: u64,"
    "\\}"
}
gdb_test "print y.field2" " = 8"

gdb_test "print z" " = simple::ByeBob \\(7, 8\\)"
gdb_test_sequence "ptype z" "" {
    " = struct simple::ByeBob \\("
    "  i32,"
    "  u64,"
    "\\)"
}
gdb_test "print z.1" " = 8"

gdb_test "print univariant" " = simple::Univariant::Foo{a: 1}"
gdb_test "print univariant.a" " = 1"
gdb_test "print univariant_anon" " = simple::UnivariantAnon::Foo\\(1\\)"
gdb_test "print univariant_anon.0" " = 1"

gdb_test_sequence "ptype simple::ByeBob" "" {
    " = struct simple::ByeBob \\("
    "  i32,"
    "  u64,"
    "\\)"
}
gdb_test "print simple::ByeBob(0xff, 5)" \
    " = simple::ByeBob \\(255, 5\\)"
gdb_test "print simple::ByeBob\{field1: 0xff, field2:5\}" \
    "Struct expression applied to non-struct type"

gdb_test "print simple::HiBob(0xff, 5)" \
    "Type simple::HiBob is not a tuple struct"
gdb_test "print nosuchsymbol" \
    "No symbol 'nosuchsymbol' in current context"

gdb_test "print e" " = simple::MoreComplicated::Two\\(73\\)"
gdb_test "print e2" \
    " = simple::MoreComplicated::Four\\{this: true, is: 8, a: 109 'm', struct_: 100, variant: 10\\}"
gdb_test "print sizeof(e)" " = 24"
gdb_test_sequence "ptype e" "" {
    " = enum simple::MoreComplicated \\{"
    "  One,"
    "  Two\\(i32\\),"
    "  Three\\(simple::HiBob\\),"
    "  Four\\{this: bool, is: u8, a: char, struct_: u64, variant: u32\\},"
    "\\}"
}

gdb_test "print e.0" " = 73"
gdb_test "print e.1" \
    "Cannot access field 1 of variant simple::MoreComplicated::Two, there are only 1 fields"
gdb_test "print e.foo" \
    "Attempting to access named field foo of tuple variant simple::MoreComplicated::Two, which has only anonymous fields"

gdb_test "print e2.variant" " = 10"
gdb_test "print e2.notexist" \
    "Could not find field notexist of struct variant simple::MoreComplicated::Four"
gdb_test "print e2.0" \
    "Variant simple::MoreComplicated::Four is not a tuple variant"

gdb_test "print k" " = simple::SpaceSaver::Nothing"
gdb_test "print l" " = simple::SpaceSaver::Thebox\\(9, $hex\\)"
gdb_test "print *l.1" " = 1729"

gdb_test "print diff2(3, 7)" " = -4"
gdb_test "print self::diff2(8, 9)" " = -1"
gdb_test "print ::diff2(23, -23)" " = 46"

gdb_test "ptype diff2" "fn \\(i32, i32\\) -> i32"
gdb_test "ptype empty" "fn \\(\\)"

gdb_test "print (diff2 as fn(i32, i32) -> i32)(19, -2)" " = 21"

# We need the ".*" because currently we don't extract the length and
# use it to intelligently print the string data.
gdb_test "print \"hello rust\"" \
    " = &str \\{data_ptr: $hex \"hello rust.*\", length: 10\\}"
gdb_test "print \"hello" "Unexpected EOF in string"
gdb_test "print r##\"hello \" rust\"##" \
    " = &str \\{data_ptr: $hex \"hello \\\\\" rust.*\", length: 12\\}"
gdb_test "print r\"hello" "Unexpected EOF in string"
gdb_test "print r###\"###hello\"" "Unexpected EOF in string"
gdb_test "print r###\"###hello\"##" "Unexpected EOF in string"
gdb_test "print r###\"hello###" "Unexpected EOF in string"

gdb_test "print 0..5" " = .*::ops::Range.* \\{start: 0, end: 5\\}"
gdb_test "print ..5" " = .*::ops::RangeTo.* \\{end: 5\\}"
gdb_test "print 5.." " = .*::ops::RangeFrom.* \\{start: 5\\}"
gdb_test "print .." " = .*::ops::RangeFull"

gdb_test "print str_some" \
    " = core::option::Option<collections::string::String>::Some\\(collections::string::String .*"
gdb_test "print str_none" " = core::option::Option<collections::string::String>::None"
gdb_test "print int_some" " = core::option::Option::Some\\(1\\)"
gdb_test "print int_none" " = core::option::Option::None"
gdb_test "print box_some" " = core::option::Option<Box<u8>>::Some\\(.*\\)"
gdb_test "print box_none" " = core::option::Option<Box<u8>>::None"
gdb_test "print custom_some" \
    " = simple::NonZeroOptimized::Value\\(collections::string::String .*"
gdb_test "print custom_none" " = simple::NonZeroOptimized::Empty"

proc test_one_slice {svar length base range} {
    global hex

    set result " = &\\\[.*\\\] \\{data_ptr: $hex, length: $length\\}"

    gdb_test "print $svar" $result
    gdb_test "print &${base}\[${range}\]" $result
}

test_one_slice slice 1 w 2..3
test_one_slice slice2 1 slice 0..1

test_one_slice all1 4 w ..
test_one_slice all2 1 slice ..

test_one_slice from1 3 w 1..
test_one_slice from2 0 slice 1..

test_one_slice to1 3 w ..3
test_one_slice to2 1 slice ..1

gdb_test "print w\[2..3\]" "Can't take slice of array without '&'"


gdb_test_sequence "complete print y.f" "" \
    {"print y.field1" "print y.field2"}
gdb_test_sequence "complete print y." "" \
    {"print y.field1" "print y.field2"}

# Unimplemented, but we can at least test the parser productions.
gdb_test "print (1,2,3)" "Tuple expressions not supported yet"
gdb_test "print (1,)" "Tuple expressions not supported yet"
gdb_test "print (1)" " = 1"

gdb_test "print 23..97.0" "Range expression with different types"

gdb_test "print (*parametrized.next.val)" \
    " = simple::ParametrizedStruct<i32> {next: simple::ParametrizedEnum<Box<simple::ParametrizedStruct<i32>>>::Empty, value: 1}"
gdb_test "print parametrized.next.val" \
    " = \\(simple::ParametrizedStruct<i32> \\*\\) $hex"
gdb_test "print parametrized" \
    " = simple::ParametrizedStruct<i32> \\{next: simple::ParametrizedEnum<Box<simple::ParametrizedStruct<i32>>>::Val\\{val: $hex\\}, value: 0\\}"