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flex.c
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/*
* Copyright (c) 2008, David Fishburn
*
* This source code is released for free distribution under the terms of the
* GNU General Public License version 2 or (at your option) any later version.
*
* This module contains functions for generating tags for Adobe languages.
* There are a number of different ones, but this will begin with:
* Flex
* MXML files (*.mMacromedia XML)
* ActionScript files (*.as)
*
* The ActionScript code was copied from the JavaScript parser, with some
* adaptations e.g. for classes and type specifiers.
*
* Flex 3 language reference
* http://livedocs.adobe.com/flex/3/langref/index.html
* https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/language-elements.html
* https://www.adobe.com/devnet/actionscript/learning/as3-fundamentals/packages.html
*/
/*
* INCLUDE FILES
*/
#include "general.h" /* must always come first */
#include <ctype.h> /* to define isalpha () */
#ifdef DEBUG
#include <stdio.h>
#endif
#include "debug.h"
#include "entry.h"
#include "keyword.h"
#include "parse.h"
#include "read.h"
#include "routines.h"
#include "vstring.h"
#include "strlist.h"
/*
* MACROS
*/
#define isType(token,t) (bool) ((token)->type == (t))
#define isKeyword(token,k) (bool) ((token)->keyword == (k))
#define isEOF(token) (isType ((token), TOKEN_EOF))
#define isIdentChar(c) \
(isalpha (c) || isdigit (c) || (c) == '$' || \
(c) == '@' || (c) == '_' || (c) == '#' || \
(c) >= 0x80)
/*
* DATA DECLARATIONS
*/
/*
* Tracks class and function names already created
*/
static stringList *ClassNames;
static stringList *FunctionNames;
/* Used to specify type of keyword.
*/
enum eKeywordId {
KEYWORD_function,
KEYWORD_capital_function,
KEYWORD_object,
KEYWORD_capital_object,
KEYWORD_prototype,
KEYWORD_var,
KEYWORD_const,
KEYWORD_new,
KEYWORD_this,
KEYWORD_for,
KEYWORD_while,
KEYWORD_do,
KEYWORD_if,
KEYWORD_else,
KEYWORD_switch,
KEYWORD_try,
KEYWORD_catch,
KEYWORD_finally,
KEYWORD_return,
KEYWORD_public,
KEYWORD_private,
KEYWORD_protected,
KEYWORD_internal,
KEYWORD_final,
KEYWORD_native,
KEYWORD_dynamic,
KEYWORD_class,
KEYWORD_interface,
KEYWORD_package,
KEYWORD_extends,
KEYWORD_static,
KEYWORD_implements,
KEYWORD_get,
KEYWORD_set,
KEYWORD_import,
KEYWORD_id,
KEYWORD_name,
KEYWORD_script,
KEYWORD_cdata,
KEYWORD_mx,
KEYWORD_fx,
KEYWORD_override
};
typedef int keywordId; /* to allow KEYWORD_NONE */
typedef enum eTokenType {
TOKEN_UNDEFINED,
TOKEN_EOF,
TOKEN_CHARACTER,
TOKEN_CLOSE_PAREN,
TOKEN_SEMICOLON,
TOKEN_COLON,
TOKEN_COMMA,
TOKEN_KEYWORD,
TOKEN_OPEN_PAREN,
TOKEN_IDENTIFIER,
TOKEN_STRING,
TOKEN_PERIOD,
TOKEN_OPEN_CURLY,
TOKEN_CLOSE_CURLY,
TOKEN_EQUAL_SIGN,
TOKEN_EXCLAMATION,
TOKEN_FORWARD_SLASH,
TOKEN_OPEN_SQUARE,
TOKEN_CLOSE_SQUARE,
TOKEN_OPEN_MXML,
TOKEN_CLOSE_MXML,
TOKEN_CLOSE_SGML,
TOKEN_LESS_THAN,
TOKEN_GREATER_THAN,
TOKEN_QUESTION_MARK,
TOKEN_OPEN_NAMESPACE,
TOKEN_POSTFIX_OPERATOR,
TOKEN_STAR,
TOKEN_BINARY_OPERATOR
} tokenType;
typedef struct sTokenInfo {
tokenType type;
keywordId keyword;
vString * string;
vString * scope;
unsigned long lineNumber;
MIOPos filePosition;
int nestLevel;
bool ignoreTag;
bool isClass;
} tokenInfo;
/*
* DATA DEFINITIONS
*/
static tokenType LastTokenType;
static tokenInfo *NextToken;
static langType Lang_flex;
typedef enum {
FLEXTAG_FUNCTION,
FLEXTAG_CLASS,
FLEXTAG_INTERFACE,
FLEXTAG_PACKAGE,
FLEXTAG_METHOD,
FLEXTAG_PROPERTY,
FLEXTAG_VARIABLE,
FLEXTAG_LOCALVAR,
FLEXTAG_CONST,
FLEXTAG_IMPORT,
FLEXTAG_MXTAG,
FLEXTAG_COUNT
} flexKind;
typedef enum {
FLEX_IMPORT_ROLE_IMPORTED,
} flexImportRole;
static roleDefinition FlexImportRoles [] = {
{ true, "import", "imports" },
};
static kindDefinition FlexKinds [] = {
{ true, 'f', "function", "functions" },
{ true, 'c', "class", "classes" },
{ true, 'i', "interface", "interfaces" },
{ true, 'P', "package", "packages" },
{ true, 'm', "method", "methods" },
{ true, 'p', "property", "properties" },
{ true, 'v', "variable", "global variables" },
{ false, 'l', "localvar", "local variables" },
{ true, 'C', "constant", "constants" },
{ true, 'I', "import", "imports",
.referenceOnly = true, ATTACH_ROLES (FlexImportRoles) },
{ true, 'x', "mxtag", "mxtags" }
};
/* Used to determine whether keyword is valid for the token language and
* what its ID is.
*/
static const keywordTable FlexKeywordTable [] = {
/* keyword keyword ID */
{ "function", KEYWORD_function },
{ "Function", KEYWORD_capital_function },
{ "object", KEYWORD_object },
{ "Object", KEYWORD_capital_object },
{ "prototype", KEYWORD_prototype },
{ "var", KEYWORD_var },
{ "const", KEYWORD_const },
{ "new", KEYWORD_new },
{ "this", KEYWORD_this },
{ "for", KEYWORD_for },
{ "while", KEYWORD_while },
{ "do", KEYWORD_do },
{ "if", KEYWORD_if },
{ "else", KEYWORD_else },
{ "switch", KEYWORD_switch },
{ "try", KEYWORD_try },
{ "catch", KEYWORD_catch },
{ "finally", KEYWORD_finally },
{ "return", KEYWORD_return },
{ "public", KEYWORD_public },
{ "private", KEYWORD_private },
{ "protected", KEYWORD_protected },
{ "internal", KEYWORD_internal },
{ "final", KEYWORD_final },
{ "native", KEYWORD_native },
{ "dynamic", KEYWORD_dynamic },
{ "class", KEYWORD_class },
{ "interface", KEYWORD_interface },
{ "package", KEYWORD_package },
{ "extends", KEYWORD_extends },
{ "static", KEYWORD_static },
{ "implements", KEYWORD_implements },
{ "get", KEYWORD_get },
{ "set", KEYWORD_set },
{ "import", KEYWORD_import },
{ "id", KEYWORD_id },
{ "name", KEYWORD_name },
{ "script", KEYWORD_script },
{ "cdata", KEYWORD_cdata },
{ "mx", KEYWORD_mx },
{ "fx", KEYWORD_fx },
{ "override", KEYWORD_override }
};
/*
* FUNCTION DEFINITIONS
*/
/* Recursive functions */
static void parseFunction (tokenInfo *const token);
static bool parseBlock (tokenInfo *const token, const vString *const parentScope);
static bool parseLine (tokenInfo *const token);
static bool parseActionScript (tokenInfo *const token, bool readNext);
static bool parseMXML (tokenInfo *const token);
static tokenInfo *newToken (void)
{
tokenInfo *const token = xMalloc (1, tokenInfo);
token->type = TOKEN_UNDEFINED;
token->keyword = KEYWORD_NONE;
token->string = vStringNew ();
token->scope = vStringNew ();
token->nestLevel = 0;
token->isClass = false;
token->ignoreTag = false;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
return token;
}
static void deleteToken (tokenInfo *const token)
{
vStringDelete (token->string);
vStringDelete (token->scope);
eFree (token);
}
static void copyToken (tokenInfo *const dest, tokenInfo *const src,
bool const include_non_read_info)
{
dest->lineNumber = src->lineNumber;
dest->filePosition = src->filePosition;
dest->type = src->type;
dest->keyword = src->keyword;
dest->isClass = src->isClass;
vStringCopy(dest->string, src->string);
if (include_non_read_info)
{
dest->nestLevel = src->nestLevel;
vStringCopy(dest->scope, src->scope);
}
}
/*
* Tag generation functions
*/
static vString *buildQualifiedName (const tokenInfo *const token)
{
vString *qualified = vStringNew ();
if (vStringLength (token->scope) > 0)
{
vStringCopy (qualified, token->scope);
vStringPut (qualified, '.');
}
vStringCat (qualified, token->string);
return qualified;
}
static void makeConstTag (tokenInfo *const token, const flexKind kind)
{
if (FlexKinds [kind].enabled && ! token->ignoreTag )
{
const char *const name = vStringValue (token->string);
tagEntryInfo e;
int role = ROLE_DEFINITION_INDEX;
if (kind == FLEXTAG_IMPORT)
role = FLEX_IMPORT_ROLE_IMPORTED;
initRefTagEntry (&e, name, kind, role);
e.lineNumber = token->lineNumber;
e.filePosition = token->filePosition;
if ( vStringLength(token->scope) > 0 )
{
/* FIXME: proper parent type */
flexKind parent_kind = FLEXTAG_CLASS;
/*
* If we're creating a function (and not a method),
* guess we're inside another function
*/
if (kind == FLEXTAG_FUNCTION)
parent_kind = FLEXTAG_FUNCTION;
/* mxtags can only be nested inside other mxtags */
else if (kind == FLEXTAG_MXTAG)
parent_kind = kind;
e.extensionFields.scopeKindIndex = parent_kind;
e.extensionFields.scopeName = vStringValue (token->scope);
}
makeTagEntry (&e);
/* make qualified tags for compatibility if requested */
if (isXtagEnabled (XTAG_QUALIFIED_TAGS))
{
vString *qualified = buildQualifiedName (token);
markTagExtraBit (&e, XTAG_QUALIFIED_TAGS);
e.name = vStringValue (qualified);
makeTagEntry (&e);
vStringDelete (qualified);
}
}
}
static void makeFlexTag (tokenInfo *const token, flexKind kind)
{
if (FlexKinds [kind].enabled && ! token->ignoreTag )
{
DebugStatement (
debugPrintf (DEBUG_PARSE
, "\n makeFlexTag start: token isClass:%d scope:%s name:%s\n"
, token->isClass
, vStringValue(token->scope)
, vStringValue(token->string)
);
);
if (kind == FLEXTAG_FUNCTION && token->isClass )
{
kind = FLEXTAG_METHOD;
}
makeConstTag (token, kind);
}
}
static void makeClassTag (tokenInfo *const token)
{
if ( ! token->ignoreTag )
{
vString *fulltag = buildQualifiedName (token);
if ( ! stringListHas(ClassNames, vStringValue (fulltag)) )
{
stringListAdd (ClassNames, vStringNewCopy (fulltag));
makeFlexTag (token, FLEXTAG_CLASS);
}
vStringDelete (fulltag);
}
}
static void makeMXTag (tokenInfo *const token)
{
if ( ! token->ignoreTag )
{
makeFlexTag (token, FLEXTAG_MXTAG);
}
}
static void makeFunctionTag (tokenInfo *const token)
{
if ( ! token->ignoreTag )
{
vString *fulltag = buildQualifiedName (token);
if ( ! stringListHas(FunctionNames, vStringValue (fulltag)) )
{
stringListAdd (FunctionNames, vStringNewCopy (fulltag));
makeFlexTag (token, FLEXTAG_FUNCTION);
}
vStringDelete (fulltag);
}
}
/*
* Parsing functions
*/
static void parseString (vString *const string, const int delimiter)
{
bool end = false;
while (! end)
{
int c = getcFromInputFile ();
if (c == EOF)
end = true;
else if (c == '\\')
{
c = getcFromInputFile(); /* This maybe a ' or ". */
vStringPut(string, c);
}
else if (c == delimiter)
end = true;
else
vStringPut (string, c);
}
}
/* Read a C identifier beginning with "firstChar" and places it into
* "name".
*/
static void parseIdentifier (vString *const string, const int firstChar)
{
int c = firstChar;
Assert (isIdentChar (c));
do
{
vStringPut (string, c);
c = getcFromInputFile ();
} while (isIdentChar (c));
ungetcToInputFile (c); /* unget non-identifier character */
}
static void readTokenFull (tokenInfo *const token, bool include_newlines)
{
int c;
bool newline_encountered = false;
/* if we've got a token held back, emit it */
if (NextToken)
{
copyToken (token, NextToken, false);
deleteToken (NextToken);
NextToken = NULL;
return;
}
token->type = TOKEN_UNDEFINED;
token->keyword = KEYWORD_NONE;
vStringClear (token->string);
getNextChar:
do
{
c = getcFromInputFile ();
if (include_newlines && (c == '\r' || c == '\n'))
newline_encountered = true;
}
while (c == '\t' || c == ' ' || c == '\r' || c == '\n');
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
switch (c)
{
case EOF: token->type = TOKEN_EOF; break;
case '(': token->type = TOKEN_OPEN_PAREN; break;
case ')': token->type = TOKEN_CLOSE_PAREN; break;
case ';': token->type = TOKEN_SEMICOLON; break;
case ',': token->type = TOKEN_COMMA; break;
case '.': token->type = TOKEN_PERIOD; break;
case ':': token->type = TOKEN_COLON; break;
case '{': token->type = TOKEN_OPEN_CURLY; break;
case '}': token->type = TOKEN_CLOSE_CURLY; break;
case '=': token->type = TOKEN_EQUAL_SIGN; break;
case '[': token->type = TOKEN_OPEN_SQUARE; break;
case ']': token->type = TOKEN_CLOSE_SQUARE; break;
case '?': token->type = TOKEN_QUESTION_MARK; break;
case '+':
case '-':
{
int d = getcFromInputFile ();
if (d == c) /* ++ or -- */
token->type = TOKEN_POSTFIX_OPERATOR;
else
{
ungetcToInputFile (d);
token->type = TOKEN_BINARY_OPERATOR;
}
break;
}
case '*':
token->type = TOKEN_STAR;
break;
case '%':
case '^':
case '|':
case '&':
token->type = TOKEN_BINARY_OPERATOR;
break;
case '\'':
case '"':
token->type = TOKEN_STRING;
parseString (token->string, c);
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
case '\\':
c = getcFromInputFile ();
if (c != '\\' && c != '"' && !isspace (c))
ungetcToInputFile (c);
token->type = TOKEN_CHARACTER;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
case '/':
{
int d = getcFromInputFile ();
if ( (d != '*') && /* is this the start of a comment? */
(d != '/') && /* is a one line comment? */
(d != '>') ) /* is this a close XML tag? */
{
ungetcToInputFile (d);
token->type = TOKEN_FORWARD_SLASH;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
}
else
{
if (d == '*')
{
skipToCharacterInInputFile2('*', '/');
goto getNextChar;
}
else if (d == '/') /* is this the start of a comment? */
{
skipToCharacterInInputFile ('\n');
/* if we care about newlines, put it back so it is seen */
if (include_newlines)
ungetcToInputFile ('\n');
goto getNextChar;
}
else if (d == '>') /* is this the start of a comment? */
{
token->type = TOKEN_CLOSE_SGML;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
}
}
break;
}
case '<':
{
/*
* An XML comment looks like this
* <!-- anything over multiple lines -->
*/
int d = getcFromInputFile ();
if ( (d != '!' ) && /* is this the start of a comment? */
(d != '/' ) && /* is this the start of a closing mx tag */
(d != 'm' ) && /* is this the start of a mx tag */
(d != 'f' ) && /* is this the start of a fx tag */
(d != 's' ) ) /* is this the start of a spark tag */
{
ungetcToInputFile (d);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
if (d == '!')
{
int e = getcFromInputFile ();
if ( e != '-' ) /* is this the start of a comment? */
{
ungetcToInputFile (e);
ungetcToInputFile (d);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
}
else
{
if (e == '-')
{
int f = getcFromInputFile ();
if ( f != '-' ) /* is this the start of a comment? */
{
ungetcToInputFile (f);
ungetcToInputFile (e);
ungetcToInputFile (d);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
}
else
{
if (f == '-')
{
do
{
skipToCharacterInInputFile ('-');
c = getcFromInputFile ();
if (c == '-')
{
d = getcFromInputFile ();
if (d == '>')
break;
else
{
ungetcToInputFile (d);
ungetcToInputFile (c);
}
break;
}
else
ungetcToInputFile (c);
} while (c != EOF && c != '\0');
goto getNextChar;
}
}
}
}
}
else if (d == 'm' || d == 'f' || d == 's' )
{
int e = getcFromInputFile ();
if ( (d == 'm' || d == 'f') && e != 'x' ) /* continuing an mx or fx tag */
{
ungetcToInputFile (e);
ungetcToInputFile (d);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
if ( (d == 'm' || d == 'f') && e == 'x' )
{
int f = getcFromInputFile ();
if ( f != ':' ) /* start of the tag */
{
ungetcToInputFile (f);
ungetcToInputFile (e);
ungetcToInputFile (d);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
token->type = TOKEN_OPEN_MXML;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
}
if ( d == 's' && e == ':') /* continuing a spark tag */
{
token->type = TOKEN_OPEN_MXML;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
ungetcToInputFile (e);
ungetcToInputFile (d);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
}
}
else if (d == '/')
{
int e = getcFromInputFile ();
if ( !(e == 'm' || e == 'f' || e == 's' ))
{
ungetcToInputFile (e);
ungetcToInputFile (d);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
int f = getcFromInputFile ();
if ( (e == 'm' || e == 'f') && f != 'x' ) /* continuing an mx or fx tag */
{
ungetcToInputFile (f);
ungetcToInputFile (e);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
if (f == 'x')
{
int g = getcFromInputFile ();
if ( g != ':' ) /* is this the start of a comment? */
{
ungetcToInputFile (g);
ungetcToInputFile (f);
ungetcToInputFile (e);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
token->type = TOKEN_CLOSE_MXML;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
}
if ( e == 's' && f == ':') /* continuing a spark tag */
{
token->type = TOKEN_CLOSE_MXML;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
else
{
ungetcToInputFile (f);
ungetcToInputFile (e);
token->type = TOKEN_LESS_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
}
}
}
}
}
break;
}
case '>':
token->type = TOKEN_GREATER_THAN;
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
break;
case '!':
token->type = TOKEN_EXCLAMATION;
/*token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();*/
break;
default:
if (! isIdentChar (c))
token->type = TOKEN_UNDEFINED;
else
{
parseIdentifier (token->string, c);
token->lineNumber = getInputLineNumber ();
token->filePosition = getInputFilePosition ();
token->keyword = lookupCaseKeyword (vStringValue (token->string), Lang_flex);
if (isKeyword (token, KEYWORD_NONE))
token->type = TOKEN_IDENTIFIER;
else
token->type = TOKEN_KEYWORD;
}
break;
}
if (include_newlines && newline_encountered)
{
/* This isn't strictly correct per the standard, but following the
* real rules means understanding all statements, and that's not
* what the parser currently does. What we do here is a guess, by
* avoiding inserting semicolons that would make the statement on
* the left or right obviously invalid. Hopefully this should not
* have false negatives (e.g. should not miss insertion of a semicolon)
* but might have false positives (e.g. it will wrongfully emit a
* semicolon sometimes, i.e. for the newline in "foo\n(bar)").
* This should however be mostly harmless as we only deal with
* newlines in specific situations where we know a false positive
* wouldn't hurt too bad. */
/* these already end a statement, so no need to duplicate it */
#define IS_STMT_SEPARATOR(t) ((t) == TOKEN_SEMICOLON || \
(t) == TOKEN_EOF || \
(t) == TOKEN_COMMA || \
(t) == TOKEN_OPEN_CURLY)
/* these cannot be the start or end of a statement */
#define IS_BINARY_OPERATOR(t) ((t) == TOKEN_EQUAL_SIGN || \
(t) == TOKEN_COLON || \
(t) == TOKEN_PERIOD || \
(t) == TOKEN_STAR || \
(t) == TOKEN_FORWARD_SLASH || \
(t) == TOKEN_QUESTION_MARK || \
(t) == TOKEN_LESS_THAN || \
(t) == TOKEN_GREATER_THAN || \
(t) == TOKEN_BINARY_OPERATOR)
if (! IS_STMT_SEPARATOR(LastTokenType) &&
! IS_STMT_SEPARATOR(token->type) &&
! IS_BINARY_OPERATOR(LastTokenType) &&
! IS_BINARY_OPERATOR(token->type) &&
/* these cannot be followed by a semicolon */
! (LastTokenType == TOKEN_OPEN_PAREN ||
LastTokenType == TOKEN_OPEN_SQUARE))
{
/* hold the token... */
Assert (NextToken == NULL);
NextToken = newToken ();
copyToken (NextToken, token, false);
/* ...and emit a semicolon instead */
token->type = TOKEN_SEMICOLON;
token->keyword = KEYWORD_NONE;
vStringClear (token->string);
}
#undef IS_STMT_SEPARATOR
#undef IS_BINARY_OPERATOR
}
LastTokenType = token->type;
}
static void readToken (tokenInfo *const token)
{
readTokenFull (token, false);
}
/*
* Token parsing functions
*/
static void skipArgumentList (tokenInfo *const token, bool include_newlines)
{
int nest_level = 0;
if (isType (token, TOKEN_OPEN_PAREN)) /* arguments? */
{
nest_level++;
while (nest_level > 0 && ! isType (token, TOKEN_EOF))
{
readToken (token);
if (isType (token, TOKEN_OPEN_PAREN))
nest_level++;
else if (isType (token, TOKEN_CLOSE_PAREN))
nest_level--;
}
readTokenFull (token, include_newlines);
}
}
static void skipArrayList (tokenInfo *const token, bool include_newlines)
{
int nest_level = 0;
/*
* Handle square brackets
* var name[1]
* So we must check for nested open and closing square brackets
*/
if (isType (token, TOKEN_OPEN_SQUARE)) /* arguments? */
{
nest_level++;
while (nest_level > 0 && ! isType (token, TOKEN_EOF))
{
readToken (token);
if (isType (token, TOKEN_OPEN_SQUARE))
nest_level++;
else if (isType (token, TOKEN_CLOSE_SQUARE))
nest_level--;
}
readTokenFull (token, include_newlines);
}
}
static void addContext (tokenInfo* const parent, const tokenInfo* const child)
{
if (vStringLength (parent->string) > 0)
{
vStringPut (parent->string, '.');
}
vStringCat (parent->string, child->string);
}
static void addToScope (tokenInfo* const token, const vString* const extra)
{
if (vStringLength (token->scope) > 0)
{
vStringPut (token->scope, '.');
}
vStringCat (token->scope, extra);
}
/*
* Scanning functions
*/
static bool findCmdTerm (tokenInfo *const token, bool include_newlines,
bool include_commas)
{
/*
* Read until we find either a semicolon or closing brace.
* Any nested braces will be handled within.
*/
while (! isType (token, TOKEN_SEMICOLON) &&
! isType (token, TOKEN_CLOSE_CURLY) &&
! (include_commas && isType (token, TOKEN_COMMA)) &&
! isType (token, TOKEN_EOF))
{
/* Handle nested blocks */
if ( isType (token, TOKEN_OPEN_CURLY))
{
parseBlock (token, NULL);
readTokenFull (token, include_newlines);
}
else if ( isType (token, TOKEN_OPEN_PAREN) )
{
skipArgumentList(token, include_newlines);
}
else if ( isType (token, TOKEN_OPEN_SQUARE) )
{
skipArrayList(token, include_newlines);
}
else
{
readTokenFull (token, include_newlines);
}
}
return isType (token, TOKEN_SEMICOLON);
}
static void parseSwitch (tokenInfo *const token)
{
/*
* switch (expression) {
* case value1:
* statement;
* break;
* case value2:
* statement;
* break;
* default : statement;
* }
*/
readToken (token);
if (isType (token, TOKEN_OPEN_PAREN))
{
skipArgumentList(token, false);