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Author SHA1 Message Date
Rui Ueyama f5fce48679 Handle ":" as a regular token character in linker scripts. 
This is an alternative to https://reviews.llvm.org/D30500 to simplify the
version definition parser and allow ":" in symbol names.

Differential Revision: https://reviews.llvm.org/D30722

llvm-svn: 297402
 2017-03-09 19:23:00 +00:00
Rui Ueyama 731a66ae98 Apply different tokenization rules to linker script expressions. 
The linker script lexer is context-sensitive. In the regular context,
arithmetic operator characters are regular characters, but in the
expression context, they are independent tokens. This afects how the
lexer tokenizes "3*4", for example. (This kind of expression is real;
the Linux kernel uses it.)

This patch defines function `maybeSplitExpr`. This function splits the
current token into multiple expression tokens if the lexer is in the
expression context.

Differential Revision: https://reviews.llvm.org/D29963

llvm-svn: 295225
 2017-02-15 19:58:17 +00:00
Rui Ueyama 4c82b4f6fa Add file comments for ScriptParser.cpp. 
llvm-svn: 295023
 2017-02-14 04:47:24 +00:00
Rui Ueyama 794366a237 Rename ScriptParser.{cpp,h} -> ScriptLexer.{cpp,h}. 
These files contain a lexer, so the new names are better.
The parser is in LinkerScript.{cpp,h}.

llvm-svn: 295022
 2017-02-14 04:47:05 +00:00