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| author | Stephen Warren <swarren@nvidia.com> | 2012-09-27 17:11:05 -0600 |
|---|---|---|
| committer | Jon Loeliger <jdl@jdl.com> | 2012-09-28 09:24:39 -0500 |
| commit | 1b6d1941dc5b589632c254ee6e960404d7cef5f2 (patch) | |
| tree | e9104f21e58cc57ca56879e84935f2db78e19e1e /dtc-lexer.l | |
| parent | 1ff3d3f8de701ed107e908030b5c1fed9d17125a (diff) | |
| download | dtc-1b6d1941dc5b589632c254ee6e960404d7cef5f2.tar.gz | |
dtc: cpp co-existence: add support for #line directives
Line control directives of the following formats are supported:
#line LINE "FILE"
# LINE "FILE" [FLAGS]
This allows dtc to consume the output of pre-processors, and to provide
error messages that refer to the original filename, including taking
into account any #include directives that the pre-processor may have
performed.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'dtc-lexer.l')
| -rw-r--r-- | dtc-lexer.l | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/dtc-lexer.l b/dtc-lexer.l index edbeb86..254d5af 100644 --- a/dtc-lexer.l +++ b/dtc-lexer.l @@ -71,6 +71,27 @@ static int pop_input_file(void); push_input_file(name); } +<*>^"#"(line)?{WS}+[0-9]+{WS}+{STRING}({WS}+[0-9]+)? { + char *line, *tmp, *fn; + /* skip text before line # */ + line = yytext; + while (!isdigit(*line)) + line++; + /* skip digits in line # */ + tmp = line; + while (!isspace(*tmp)) + tmp++; + /* "NULL"-terminate line # */ + *tmp = '\0'; + /* start of filename */ + fn = strchr(tmp + 1, '"') + 1; + /* strip trailing " from filename */ + tmp = strchr(fn, '"'); + *tmp = 0; + /* -1 since #line is the number of the next line */ + srcpos_set_line(xstrdup(fn), atoi(line) - 1); + } + <*><<EOF>> { if (!pop_input_file()) { yyterminate(); |