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full lex double quoted strings

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This commit is contained in:
z7zmey 2017-11-16 00:05:44 +02:00
parent 34ea861a36
commit 841e92a8bd
2 changed files with 399 additions and 582 deletions
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880
php-parser.go
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101
php-parser.l
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@ -33,14 +33,36 @@ const (
STRING
STRING_VAR
STRING_VAR_INDEX
STRING_VAR_NAME
)
type lexer struct {
*lex.Lexer
}
func begin(cond int) {
sc = cond
var stateStack = []int{PHP}
func pushState(state int) {
sc = state
stateStack = append(stateStack, state)
fmt.Printf("PUSH STATE; CURRENT STATE: %d\n", state)
}
func popState() {
len := len(stateStack)
if len <= 1 {
return
}
sc = stateStack[len - 2]
stateStack = stateStack[:len-1]
fmt.Printf("POP STATE; CURRENT STATE: %d\n", sc)
}
func begin(state int) {
sc = state
}
func rune2Class(r rune) int {
@ -104,7 +126,7 @@ func (l *lexer) Lex() int { // Lex(lval *yySymType)
%}
%s PHP STRING STRING_VAR STRING_VAR_INDEX
%s PHP STRING STRING_VAR STRING_VAR_INDEX STRING_VAR_NAME
%yyb last == '\n' || last = '\0'
%yyt sc
@ -112,15 +134,9 @@ func (l *lexer) Lex() int { // Lex(lval *yySymType)
%yyn c = l.Next()
%yym l.Mark()
D [0-9]+
NC ([^\\\$\"\{])
ENSCAPED ([\\].)
DOLLAR ([\$]+{ENSCAPED})|([\$]+[^a-zA-Z_\x7f-\xff\$\"\{])
CURVE ([\{]+{ENSCAPED})|([\{]+[^\{\$\"])
ALLOWED ({NC}|{ENSCAPED}|{DOLLAR}|{CURVE})
STR {ALLOWED}*
STR_END [\{\$]?[\"]
D ([0-9]+)
VAR_NAME [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
OPERATORS [;:,.\[\]()|\/\^&\+-*=%!~$<>?@]
%%
c = l.Rule0()
@ -144,11 +160,10 @@ VAR_NAME [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
l.ungetN(len(l.TokenBytes(nil))-cnt)
tokenBytes := l.TokenBytes(nil)[:cnt]
fmt.Println(string(tokenBytes)) // TODO: RETURN TOKEN
begin(STRING)
pushState(STRING)
}
F:for {
c := l.Next()
if c == -1 {
break;
}
@ -178,19 +193,51 @@ VAR_NAME [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
case '\\':
c = l.Next();
}
c = l.Next()
}
<PHP>. fmt.Printf("other: %q\n", l.TokenBytes(nil))
<STRING>\" fmt.Println("\""); begin(PHP)
<STRING>\{\$ fmt.Printf("T_CURLY_OPEN: %q\n", l.ungetN(1));
<STRING>\$\{ fmt.Printf("T_DOLLAR_OPEN_CURLY_BRACES: %q\n", l.TokenBytes(nil))
<STRING>\" fmt.Println("\""); popState()
<STRING>\{\$ fmt.Printf("T_CURLY_OPEN: %q\n", l.ungetN(1));pushState(PHP)
<STRING>\$\{ fmt.Printf("T_DOLLAR_OPEN_CURLY_BRACES: %q\n", l.TokenBytes(nil));pushState(STRING_VAR_NAME)
<STRING>\$ l.ungetN(1);begin(STRING_VAR)
<STRING>.
F1:for {
if c == -1 {
break;
}
<STRING>{STR}{STR_END} fmt.Printf("T_ENCAPSED_AND_WHITESPACE1: %q\n", l.ungetN(1));
<STRING>{STR}[\{]+[\$] fmt.Printf("T_ENCAPSED_AND_WHITESPACE2: %q\n", l.ungetN(2));
<STRING>{STR}[\$]+[\{] fmt.Printf("T_ENCAPSED_AND_WHITESPACE3: %q\n", l.ungetN(2));
<STRING>{STR}[^\{][\$]+[a-zA-Z_\x7f-\xff] fmt.Printf("T_ENCAPSED_AND_WHITESPACE4: %q\n", l.ungetN(2));
switch c {
case '"' :
fmt.Printf("T_ENCAPSED_AND_WHITESPACE: %s\n", l.TokenBytes(nil));
break F1;
case '$':
c = l.Next();
if rune(c) == '{' || c >= 'A' && c <= 'Z' || c == '_' || c >= 'a' && c <= 'z' || c >= '\u007f' && c <= 'ÿ' {
l.ungetN(1)
tb := l.TokenBytes(nil)
fmt.Printf("T_ENCAPSED_AND_WHITESPACE: %s\n", tb[:len(tb)-1]);
break F1;
}
l.ungetN(0)
case '{':
c = l.Next();
if rune(c) == '$' {
l.ungetN(1)
tb := l.TokenBytes(nil)
fmt.Printf("T_ENCAPSED_AND_WHITESPACE: %s\n", tb[:len(tb)-1]);
break F1;
}
l.ungetN(0)
case '\\':
c = l.Next();
}
c = l.Next()
}
<STRING_VAR>\${VAR_NAME} fmt.Printf("T_VARIABLE: %q\n", l.TokenBytes(nil));
<STRING_VAR>->{VAR_NAME} fmt.Printf("T_OBJECT_OPERATOR: %q\n", l.ungetN(len(l.TokenBytes(nil))-2));
@ -202,10 +249,16 @@ VAR_NAME [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*
<STRING_VAR_INDEX>\${VAR_NAME} fmt.Printf("T_VARIABLE: %q\n", l.TokenBytes(nil));
<STRING_VAR_INDEX>{VAR_NAME} fmt.Printf("T_STRING: %q\n", l.TokenBytes(nil));
<STRING_VAR_INDEX>\] fmt.Println("\"]\""); begin(STRING)
<STRING_VAR_INDEX>[ \n\r\t\\'#] fmt.Printf("T_ENCAPSED_AND_WHITESPACE: %q\n", l.TokenBytes(nil));
<STRING_VAR_INDEX>[ \n\r\t\\'#] fmt.Printf("T_ENCAPSED_AND_WHITESPACE: %q\n", l.ungetN(1));begin(STRING)
<STRING_VAR_INDEX>{OPERATORS} fmt.Printf("%q\n", l.TokenBytes(nil));
<STRING_VAR_INDEX>. fmt.Printf("%q\n", l.TokenBytes(nil));
<PHP>\${VAR_NAME} fmt.Println("T_VARIABLE")
<STRING_VAR_NAME>{VAR_NAME}[\[\}] fmt.Printf("T_STRING_VARNAME: %q\n", l.ungetN(1));popState();pushState(PHP)
<STRING_VAR_NAME>. l.ungetN(1);popState();pushState(PHP)
<PHP>\} fmt.Println("}"); popState();
<PHP>\${VAR_NAME} fmt.Printf("T_VARIABLE: %q\n", l.TokenBytes(nil))
<PHP>. fmt.Printf("other: %q\n", l.TokenBytes(nil))
%%
if c, ok := l.Abort(); ok { return int(c) }