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| author | Stephen Warren <swarren@wwwdotorg.org> | 2012-04-03 20:56:00 -0600 |
|---|---|---|
| committer | Jon Loeliger <jdl@jdl.com> | 2012-04-09 08:42:05 -0500 |
| commit | 5f0c3b2d6235dec65fff1628a97f45e21680b36d (patch) | |
| tree | 02879e2ced2df8ebd86fc97219d9fe709f8af332 /dtc-lexer.l | |
| parent | eaec1dbc5946d5fd01a9ef7120f8461c74d759a0 (diff) | |
| download | dtc-5f0c3b2d6235dec65fff1628a97f45e21680b36d.tar.gz | |
dtc: Basic integer expressions
Written by David Gibson <david@gibson.dropbear.id.au>. Additions by me:
* Ported to ToT dtc.
* Renamed cell to integer throughout.
* Implemented value range checks.
* Allow U/L/UL/LL/ULL suffix on literals.
* Enabled the commented test.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'dtc-lexer.l')
| -rw-r--r-- | dtc-lexer.l | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/dtc-lexer.l b/dtc-lexer.l index 73d190c..4715f31 100644 --- a/dtc-lexer.l +++ b/dtc-lexer.l @@ -110,7 +110,7 @@ static int pop_input_file(void); return DT_LABEL; } -<V1>[0-9]+|0[xX][0-9a-fA-F]+ { +<V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? { yylval.literal = xstrdup(yytext); DPRINT("Literal: '%s'\n", yylval.literal); return DT_LITERAL; @@ -164,6 +164,15 @@ static int pop_input_file(void); <*>{COMMENT}+ /* eat C-style comments */ <*>{LINECOMMENT}+ /* eat C++-style comments */ +<*>"<<" { return DT_LSHIFT; }; +<*>">>" { return DT_RSHIFT; }; +<*>"<=" { return DT_LE; }; +<*>">=" { return DT_GE; }; +<*>"==" { return DT_EQ; }; +<*>"!=" { return DT_NE; }; +<*>"&&" { return DT_AND; }; +<*>"||" { return DT_OR; }; + <*>. { DPRINT("Char: %c (\\x%02x)\n", yytext[0], (unsigned)yytext[0]); |