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manual lex constant string

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z7zmey 2017-11-13 23:55:09 +02:00
parent 78670ba71e
commit 13791b083f
2 changed files with 492 additions and 541 deletions
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985
php-parser.go
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48
php-parser.l
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@ -134,9 +134,53 @@ VAR_NAME [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
<PHP>[ \t\n\r]+ fmt.Println("T_WHITESPACE")
<PHP>\?\> fmt.Println("T_CLOSE_TAG");begin(INITIAL)
<PHP>[\"]{STR}{STR_END} fmt.Printf("T_CONSTANT_ENCAPSED_STRING: %s\n", l.TokenBytes(nil));
<PHP>[\']([^\\\']*([\\][\'])*)*[\'] fmt.Printf("T_CONSTANT_ENCAPSED_STRING: %s\n", l.TokenBytes(nil));
<PHP>[\"] fmt.Println("\"");begin(STRING)
<PHP>[b]?[\"]
binPrefix := l.TokenBytes(nil)[0] == 'b'
F:for {
c := l.Next()
if c == -1 {
break;
}
switch c {
case '"' :
c = l.Next();
fmt.Printf("T_CONSTANT_ENCAPSED_STRING: %s\n", l.TokenBytes(nil));
break F;
case '$':
c = l.Next();
if rune(c) == '{' || c >= 'A' && c <= 'Z' || c == '_' || c >= 'a' && c <= 'z' || c >= '\u007f' && c <= 'ÿ' {
if binPrefix {
l.ungetN(len(l.TokenBytes(nil))-2)
fmt.Println("b\""); begin(STRING)
} else {
l.ungetN(len(l.TokenBytes(nil))-1)
fmt.Println("\""); begin(STRING)
}
break F;
} else {
l.ungetN(0)
}
case '{':
c = l.Next();
if rune(c) == '$' {
if binPrefix {
l.ungetN(len(l.TokenBytes(nil))-2)
fmt.Println("b\""); begin(STRING)
} else {
l.ungetN(len(l.TokenBytes(nil))-1)
fmt.Println("\""); begin(STRING)
}
break F;
} else {
l.ungetN(0)
}
case '\\':
c = l.Next();
}
}
<PHP>. fmt.Printf("other: %q\n", l.TokenBytes(nil))
<STRING>\" fmt.Println("\""); begin(PHP)