jerryscript/tools/vera++/scripts/rules/jerry_switch_case.tcl
László Langó e763280761 Fix Vera++ rule for switch statements.
JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
2016-02-09 13:13:40 +01:00

283 lines
14 KiB
Tcl

#!/usr/bin/tclsh
# Copyright 2014-2015 Samsung Electronics Co., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# switch-case
foreach fileName [getSourceFileNames] {
set is_in_comment "no"
set is_in_pp_define "no"
foreach token [getTokens $fileName 1 0 -1 -1 {}] {
set type [lindex $token 3]
set lineNumber [lindex $token 1]
if {$is_in_comment == "yes"} {
set is_in_comment "no"
}
if {$type == "newline"} {
set is_in_pp_define "no"
} elseif {$type == "ccomment"} {
set is_in_comment "yes"
} elseif {[string first "pp_" $type] == 0} {
if {$type == "pp_define"} {
set is_in_pp_define "yes"
}
} elseif {$type == "space"} {
} elseif {$type != "eof"} {
if {$is_in_pp_define == "no" && $type == "switch"} {
set next_token_start [lindex $token 2]
incr next_token_start 1
set line_num 0
set state "switch"
set case_block "no"
set seen_braces 0
foreach next_token [getTokens $fileName $lineNumber $next_token_start -1 -1 {}] {
set next_token_type [lindex $next_token 3]
set next_token_value [lindex $next_token 0]
if {$state == "switch"} {
if {$next_token_type == "ccomment" || $next_token_type == "space" || $next_token_type == "newline"} {
continue
} elseif {$next_token_type == "leftbrace"} {
set state "first-case"
continue
} else {
# TODO: check switch
continue
}
} elseif {$state == "first-case"} {
if {$next_token_type == "ccomment" || $next_token_type == "space" || $next_token_type == "newline"} {
continue
} elseif {$next_token_type == "case"} {
set state "case"
continue
} elseif {$next_token_type == "default"} {
set state "default"
continue
} else {
# Macros magic: give up
break
}
} elseif {$state == "case"} {
if {$next_token_type == "space"} {
set state "space-after-case"
continue
} else {
report $fileName [lindex $next_token 1] "There should be single space character after 'case' keyword (state $state)"
}
} elseif {$state == "space-after-case"} {
if {$next_token_type != "identifier" && $next_token_type != "intlit" && $next_token_type != "charlit" && $next_token_type != "sizeof"} {
report $fileName [lindex $next_token 1] "There should be single space character after 'case' keyword (state $state, next_token_type $next_token_type)"
} else {
set state "case-label"
continue
}
} elseif {$state == "case-label" || $state == "default"} {
set case_block "no"
if {$next_token_type != "colon"} {
continue
} else {
set state "colon"
continue
}
} elseif {$state == "after-colon-preprocessor"} {
if {$next_token_type == "newline"} {
set state "colon"
}
} elseif {$state == "colon"} {
if {$next_token_type == "space" || $next_token_type == "newline"} {
continue
} elseif {$next_token_type == "ccomment"} {
if {[string match "*FALL*" $next_token_value]} {
set state "fallthru"
set line_num [lindex $next_token 1]
continue
} else {
continue
}
} elseif {$next_token_type == "case"} {
set state "case"
continue
} elseif {$next_token_type == "default"} {
set state "default"
continue
} elseif {$next_token_type == "leftbrace"} {
set case_block "yes"
set state "wait-for-break"
continue
} elseif {$next_token_type == "identifier"} {
if {[string compare "JERRY_UNREACHABLE" $next_token_value] == 0
|| [string first "JERRY_UNIMPLEMENTED" $next_token_value] == 0} {
set state "wait-for-semicolon"
continue
} else {
set state "wait-for-break"
continue
}
} elseif {$next_token_type == "break"
|| $next_token_type == "continue"
|| $next_token_type == "return"} {
set state "wait-for-semicolon"
continue
} elseif {[string first "pp_" $next_token_type] == 0} {
set state "after-colon-preprocessor"
} else {
set state "wait-for-break"
continue
}
} elseif {$state == "wait-for-semicolon"} {
if {$next_token_type == "semicolon"} {
set state "break"
}
continue
} elseif {$state == "wait-for-break"} {
if {$next_token_type == "case" || $next_token_type == "default"} {
report $fileName [lindex $next_token 1] "Missing break, continue or FALLTHRU comment before case (state $state)"
} elseif {$next_token_type == "leftbrace"} {
set state "inside-braces"
incr seen_braces 1
continue
} elseif {$next_token_type == "rightbrace"} {
if {$case_block == "yes"} {
set state "case-blocks-end"
continue
} else {
break
}
} elseif {[string compare "JERRY_UNREACHABLE" $next_token_value] == 0
|| [string first "JERRY_UNIMPLEMENTED" $next_token_value] == 0} {
set state "wait-for-semicolon"
continue
} elseif {$next_token_type == "ccomment" && [string match "*FALL*" $next_token_value]} {
set state "fallthru"
set line_num [lindex $next_token 1]
continue
} elseif {$next_token_type == "break"
|| $next_token_type == "continue"
|| $next_token_type == "return"
|| $next_token_type == "goto"} {
set state "wait-for-semicolon"
continue
}
continue
} elseif {$state == "break" || $state == "fallthru"} {
if {$case_block == "no"} {
if {$next_token_type == "ccomment" || $next_token_type == "space" || $next_token_type == "newline"} {
continue
} elseif {$next_token_type == "case"} {
set state "case"
continue
} elseif {$next_token_type == "default"} {
set state "default"
continue
} elseif {$next_token_type == "leftbrace"} {
set state "inside-braces"
incr seen_braces 1
continue
} elseif {$next_token_type == "rightbrace"} {
lappend switch_ends [lindex $next_token 1]
break
} elseif {$next_token_type == "break"
|| $next_token_type == "continue"
|| $next_token_type == "return"} {
set state "wait-for-semicolon"
continue
} else {
set state "wait-for-break"
continue
}
} else {
if {$next_token_type == "ccomment" || $next_token_type == "space" || $next_token_type == "newline"} {
continue
} elseif {$next_token_type == "case"} {
set state "case"
continue
} elseif {$next_token_type == "default"} {
set state "default"
continue
} elseif {$next_token_type == "leftbrace"} {
set state "inside-braces"
incr seen_braces 1
continue
} elseif {$next_token_type == "rightbrace"} {
set state "after-rightbrace"
continue
} elseif {$next_token_type == "break"
|| $next_token_type == "continue"
|| $next_token_type == "return"} {
set state "wait-for-semicolon"
continue
} else {
set state "wait-for-break"
continue
}
}
} elseif {$state == "inside-braces"} {
if {$next_token_type == "rightbrace"} {
incr seen_braces -1
if {$seen_braces == 0} {
set state "wait-for-break"
continue
}
} elseif {$next_token_type == "leftbrace"} {
incr seen_braces 1
}
continue
} elseif {$state == "after-rightbrace-preprocessor"} {
if {$next_token_type == "newline"} {
set state "after-rightbrace"
}
} elseif {$state == "after-rightbrace"} {
if {$next_token_type == "ccomment" || $next_token_type == "space" || $next_token_type == "newline"} {
continue
} elseif {$next_token_type == "case"} {
set state "case"
continue
} elseif {$next_token_type == "default"} {
set state "default"
continue
} elseif {$next_token_type == "rightbrace"} {
lappend switch_ends [lindex $next_token 1]
break
} elseif {[string first "pp_" $next_token_type] == 0} {
set state "after-rightbrace-preprocessor"
} else {
report $fileName [lindex $next_token 1] "There should be 'case' or 'default' (state $state)"
}
} elseif {$state == "case-blocks-end-preprocessor"} {
if {$next_token_type == "newline"} {
set state "case-blocks-end"
}
} elseif {$state == "case-blocks-end"} {
if {$next_token_type == "ccomment" || $next_token_type == "space" || $next_token_type == "newline"} {
continue
} elseif {$next_token_type == "rightbrace"} {
lappend switch_ends [lindex $next_token 1]
break
} elseif {[string first "pp_" $next_token_type] == 0} {
set state "case-blocks-end-preprocessor"
} else {
report $fileName [lindex $next_token 1] "Missing break, continue or FALLTHRU comment before rightbrace (state $state)"
}
} else {
report $fileName [lindex $next_token 1] "Unknown state: $state"
}
}
}
}
}
}