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minor cleanup on macro comment handling...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2016-12-22 07:55:06 +03:00
parent e749977e11
commit 5252724ab2
1 changed files with 33 additions and 15 deletions
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48
Slang/slang.js
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@ -59,15 +59,21 @@ function run(context){
// XXX make this add '\n' / EOL words to the stream... // XXX make this add '\n' / EOL words to the stream...
//var SPLITTER = /\s*\([^\)]*\)\s*|\s*--.*[\n$]|\s*"([^"]*)"\s*|\s*'([^']*)'\s*|\s+/m //var SPLITTER = /\s*\([^\)]*\)\s*|\s*--.*[\n$]|\s*"([^"]*)"\s*|\s*'([^']*)'\s*|\s+/m
var SPLITTER = RegExp([ var SPLITTER = RegExp([
/* XXX there are two ways to deal with comments:
// 1) lexer-based -- this section commented, next uncommented...
// 2) macro-based -- this section uncommented, next commented...
// #2 is a bit buggy...
// terms to keep in the stream... // terms to keep in the stream...
/*'('+[ '\\s*('+[
'\\n', '\\n',
'--', '--',
].join('|')+')',*/ ].join('|')+')',
//*/
// comments... //* lexer comments...
'\\s*\\([^\\)]*\\)\\s*', '\\s*\\([^\\)]*\\)\\s*',
'\\s*--.*[\\n$]', '\\s*--.*[\\n$]',
//*/
// quoted strings... // quoted strings...
'\\s*"([^"]*)"\\s*', '\\s*"([^"]*)"\\s*',
@ -82,6 +88,27 @@ var SPLITTER = RegExp([
'm') 'm')
// helpers...
// XXX should these skip quoted ends?
var collectUntil = function(end){
return function(context){
var res = ['--']
var code = context.code
var cur = code.shift()
res.push(cur)
while(cur != end && code.length > 0){
cur = code.splice(0, 1)[0]
res.push(cur)
}
return res
}
}
var dropUntil = function(end){
var collector = collectUntil(end)
return function(context){ collector(context) }
}
// pre-processor namespace... // pre-processor namespace...
var PRE_NAMESPACE = { var PRE_NAMESPACE = {
// comment... // comment...
@ -90,17 +117,8 @@ var PRE_NAMESPACE = {
// drop everything until '\n' // drop everything until '\n'
// //
// NOTE: this depends on explicit '\n' words... // NOTE: this depends on explicit '\n' words...
'--': function(context){ '--': dropUntil('\n'),
var res = ['--'] //'(': dropUntil(')'),
var code = context.code
var cur = code.splice(0, 1)[0]
res.push(cur)
while(cur != '\n' && code.length > 0){
cur = code.splice(0, 1)[0]
res.push(cur)
}
console.log(res.join(' '))
},
// XXX use the real reader... // XXX use the real reader...
// block... // block...
@ -154,7 +172,7 @@ var PRE_NAMESPACE = {
}, },
// a no op... // a no op...
'\n': function(){ console.log('NL') }, '\n': function(){ },
} }