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/*===- ConfigLexer.l - Scanner for CompilerDriver Config Files -*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the flex scanner for configuration files for the
// llvmc CompilerDriver.
//
//===----------------------------------------------------------------------===*/
%option prefix="Config"
%option nostdinit
%option never-interactive
%option batch
%option noyywrap
%option 8bit
%option outfile="ConfigLexer.cpp"
%option ecs
%option noyymore
%option noreject
%pointer
%{
#include "ConfigLexer.h"
#define YY_INPUT(buf,result,max_size) \
{ \
assert(ConfigLexerInput != 0 && "Oops"); \
result = ConfigLexerInput->read(buf,max_size); \
if (result == 0 ) result = YY_NULL; \
}
#define YY_FATAL_ERROR(msg) \
{ \
assert(ConfigLexerInput != 0 && "Oops"); \
ConfigLexerInput->error(msg); \
}
#define YY_DECL ConfigLexerTokens llvm::Configlex()
#define yyterminate() { return EOFTOK; }
using namespace llvm;
inline llvm::ConfigLexerTokens
handleNameContext(llvm::ConfigLexerTokens token) {
ConfigLexerState.StringVal = yytext;
if (ConfigLexerState.in_value)
return OPTION;
return token;
}
inline llvm::ConfigLexerTokens
handleSubstitution(llvm::ConfigLexerTokens token) {
if (ConfigLexerState.in_value) {
ConfigLexerState.StringVal = yytext;
return token;
}
YY_FATAL_ERROR("Substitition tokens not allowed in names" );
return ERRORTOK;
};
inline llvm::ConfigLexerTokens handleValueContext(llvm::ConfigLexerTokens token) {
ConfigLexerState.StringVal = yytext;
if (ConfigLexerState.in_value)
return token;
return OPTION;
}
%}
ASSEMBLER assembler|Assembler|ASSEMBLER
COMMAND command|Command|COMMAND
LANG lang|Lang|LANG
LIBS libs|Libs|LIBS
LINKER linker|Linker|LINKER
NAME name|Name|NAME
OPT1 opt1|Opt1|OPT1
OPT2 opt2|Opt2|OPT2
OPT3 opt3|Opt3|OPT3
OPT4 opt4|Opt4|OPT4
OPT5 opt5|Opt5|OPT5
OPTIMIZER optimizer|Optimizer|OPTIMIZER
OUTPUT output|Output|OUTPUT
PREPROCESSES preprocesses|PreProcesses|PREPROCESSES
PREPROCESSOR preprocessor|PreProcessor|PREPROCESSOR
REQUIRED required|Required|REQUIRED
TRANSLATES translates|Translates|TRANSLATES
TRANSLATOR translator|Translator|TRANSLATOR
VERSION version|Version|VERSION
True true|True|TRUE|on|On|ON|yes|Yes|YES
False false|False|FALSE|off|Off|OFF|no|No|NO
Bytecode bc|BC|bytecode|Bytecode|BYTECODE
Assembly asm|ASM|assembly|Assembly|ASSEMBLY
BadSubst \%[a-zA-Z]*\%
Comment \#[^\r\n]*\r?\n
NewLine \r?\n
Eq \=
EscNewLine \\\r?\n
Option [-A-Za-z0-9_:%+/\\|,][-A-Za-z0-9_:+/\\|,@]*
Sep \.
String \"[^\"]*\"
White [ \t]*
%%
{White} { if (ConfigLexerState.in_value) return SPACE; }
{Comment} { /* Ignore comments */
ConfigLexerState.in_value = false;
ConfigLexerState.lineNum++;
return EOLTOK;
}
{EscNewLine} { ConfigLexerState.lineNum++;
/* Don't return EOLTOK! */
}
{NewLine} { ConfigLexerState.in_value = false;
ConfigLexerState.lineNum++;
return EOLTOK;
}
{Eq} { ConfigLexerState.in_value = true;
return EQUALS;
}
{Sep} { return SEPARATOR; }
{VERSION} { return handleNameContext(VERSION_TOK); }
{LANG} { return handleNameContext(LANG); }
{LIBS} { return handleNameContext(LIBS); }
{NAME} { return handleNameContext(NAME); }
{OPT1} { return handleNameContext(OPT1); }
{OPT2} { return handleNameContext(OPT2); }
{OPT3} { return handleNameContext(OPT3); }
{OPT4} { return handleNameContext(OPT4); }
{OPT5} { return handleNameContext(OPT5); }
{PREPROCESSOR} { return handleNameContext(PREPROCESSOR); }
{COMMAND} { return handleNameContext(COMMAND); }
{REQUIRED} { return handleNameContext(REQUIRED); }
{TRANSLATOR} { return handleNameContext(TRANSLATOR); }
{PREPROCESSES} { return handleNameContext(PREPROCESSES); }
{OUTPUT} { return handleNameContext(OUTPUT); }
{OPTIMIZER} { return handleNameContext(OPTIMIZER); }
{TRANSLATES} { return handleNameContext(TRANSLATES); }
{ASSEMBLER} { return handleNameContext(ASSEMBLER); }
{LINKER} { return handleNameContext(LINKER); }
%args% { return handleSubstitution(ARGS_SUBST); }
%defs% { return handleSubstitution(DEFS_SUBST); }
%in% { return handleSubstitution(IN_SUBST); }
%incls% { return handleSubstitution(INCLS_SUBST); }
%libs% { return handleSubstitution(LIBS_SUBST); }
%opt% { return handleSubstitution(OPT_SUBST); }
%out% { return handleSubstitution(OUT_SUBST); }
%stats% { return handleSubstitution(STATS_SUBST); }
%target% { return handleSubstitution(TARGET_SUBST); }
%time% { return handleSubstitution(TIME_SUBST); }
%verbose% { return handleSubstitution(VERBOSE_SUBST); }
%fOpts% { return handleSubstitution(FOPTS_SUBST); }
%MOpts% { return handleSubstitution(MOPTS_SUBST); }
%WOpts% { return handleSubstitution(WOPTS_SUBST); }
{Assembly} { return handleValueContext(ASSEMBLY); }
{Bytecode} { return handleValueContext(BYTECODE); }
{True} { return handleValueContext(TRUETOK); }
{False} { return handleValueContext(FALSETOK); }
{Option} { ConfigLexerState.StringVal = yytext; return OPTION; }
{String} { ConfigLexerState.StringVal = yytext+1; // Nuke start quote
ConfigLexerState.StringVal.erase(
--ConfigLexerState.StringVal.end());
return STRING;
}
{BadSubst} { YY_FATAL_ERROR("Invalid substitution token"); }
%%
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