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Diffstat (limited to 'ragel/host-go/rlparse.lm')
| -rw-r--r-- | ragel/host-go/rlparse.lm | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/ragel/host-go/rlparse.lm b/ragel/host-go/rlparse.lm new file mode 100644 index 00000000..db7851c7 --- /dev/null +++ b/ragel/host-go/rlparse.lm @@ -0,0 +1,202 @@ +include 'ragel.lm' +include 'rlreduce.lm' + +namespace inline + lex + literal `fpc `fc `fcurs `ftargs + `fentry `fhold `fexec `fgoto `fnext + `fcall `fret `fbreak `fncall `fnret `fnbreak + + token ident /ident/ + token number /digit+/ + token hex_number /'0x' [0-9a-fA-F]+/ + token dec_number /'0x' [0-9a-fA-F]+/ + + token comment + / c_comment | cpp_comment / + + token string + / s_literal | d_literal / + + token whitespace + / ( [ \t] | NL )+ / + + literal + `{ `} `:: `* `, `( `) `; + + token var_ref + / "$" [a-zA-Z_][a-zA-Z_0-9]* / + { + if GblActionParams + { + input->push( make_token( + typeid<var_ref>, input->pull( match_length ) ) ) + } + else + { + # Just pull one char. Don't consume the word because it may + # be a keyword. + input->push( make_token( + typeid<c_any>, input->pull( 1 ) ) ) + } + } + + token c_any + / any / + end + +end + +namespace host + lex + literal `%%{ + + token close_inc /'}--%%'/ + { + input->push( make_token( typeid<close_inc>, input->pull( match_length ) ) ) + restoreGlobals() + } + + token close_imp /'}++%%'/ + { + input->push( make_token( typeid<close_imp>, input->pull( match_length ) ) ) + restoreGlobals() + } + + token slr / '%%' [^{] [^\n]* '\n' / + { + # Translates single line to multi-line + input->pull( 2 ) + R: str = input->pull( match_length - 3 ) + input->push( "\n}%%" ) + input->push( R ) + input->push( "%%{" ) + } + + rl NL / '\n' / + + rl s_literal + / "'" ([^'\\\n] | '\\' (any | NL))* "'" / + + rl d_literal + / '"' ([^"\\] | NL | '\\' (any | NL))* '"' / + + literal `define `= + + token ident /ident "'"?/ + token number /digit+/ + token hex_number /'0x' [0-9a-fA-F]+/ + + token comment + / c_comment | cpp_comment / + + token string + / s_literal | d_literal / + + token whitespace + / ( [ \t] | NL )+ / + + token c_any / any / + end + + def tok + [`define whitespace ident whitespace? number] :ImportDefNum + | [`define whitespace ident whitespace? string] :ImportDefStr + | [ident whitespace? `= whitespace? number] :ImportAssignNum + | [ident whitespace? `= whitespace? string] :ImportAssignStr + | [`define] :Def + | [`=] :Eq + | [ident] :Ident + | [number] :Number + | [hex_number] :HexNumber + | [comment] :Comment + | [string] :String + | [whitespace] :Whitespace + | [c_any] :Any +end + +reduction TopLevel + + # Pass Through. + # def tok + # [`define ident number] :Def1 + # | [`define ident string] :Def2 + # | [ident `= number] :Ass1 + # | [ident `= string] :Ass2 + # [`define whitespace ident whitespace? number] :ImportDefNum + # | [`define whitespace ident whitespace? string] :ImportDefStr + # | [ident whitespace? `= whitespace? number] :ImportAssignNum + # | [ident whitespace? `= whitespace? string] :ImportAssignStr + # | [`define] :Def + # | [`=] :Eq + # | [ident] :Ident + # | [number] :Number + # | [hex_number] :HexNumber + # | [comment] :Comment + # | [string] :String + # | [whitespace] :Whitespace + # | [c_any] :Any + + host::tok :ImportDefNum + { + if ( isImport ) + { + Literal *lit = new Literal( @number, + false /* $number->neg */, $number->data, + $number->length, Literal::Number ); + + string name( $ident->data, $ident->length ); + import( @ident, name, lit ); + } + } + host::tok :ImportDefStr + { + if ( isImport ) + { + Literal *lit = new Literal( @string, false, + $string->data, $string->length, Literal::LitString ); + string name( $ident->data, $ident->length ); + import( @ident, name, lit ); + } + } + host::tok :ImportAssignNum + { + if ( isImport ) + { + Literal *lit = new Literal( @number, + false /*$number->neg */, $number->data, + $number->length, Literal::Number ); + string name( $ident->data, $ident->length ); + import( @ident, name, lit ); + } + } + host::tok :ImportAssignStr + { + if ( isImport ) + { + Literal *lit = new Literal( @string, false, + $string->data, $string->length, Literal::LitString ); + + string name( $ident->data, $ident->length ); + import( @ident, name, lit ); + } + } + +end + +export RagelError: str + +# File name. The open is expected to succeed. It is tested before the colm +# program is called. +A: list_el<str> = argv->pop_head_el() +GblFileName = A->value + +# Remaining items are include paths. +while ( argv->length > 0 ) { + A = argv->pop_head_el() + GblIncludePaths->push_tail_el( A ) +} + +Stream: stream = open( GblFileName, "r" ) +reduce TopLevel start[ Stream ] +RagelError = error |