Entry: JS_EvaluateScriptForPrincipals (Function)
Summary: Compiles and executes a security-enabled script.
Syntax:
JSBool JS_EvaluateScriptForPrincipals(JSContext *cx,
JSObject *obj, JSPrincipals *principals, const char *bytes,
uintN length, const char *filename, uintN lineno,
jsval *rval);
Argument Type Description
cx JSContext * JS context in which the script compiles and executes.
obj JSObject * Object with which the script is associated.
principals JSPrincipals * Pointer to the structure holding the security information for this script.
bytes const char * String containing the script to compile and execute.
length size_t Size, in bytes, of the script to compile and execute.
filename const char * Name of file or URL containing the script. Used to report filename or URL in error messages.
lineno uintN Line number. Used to report the offending line in the file or URL if an error occurs.
rval jsval * Pointer to the value from the last executed expression statement processed in the script.
Description:
JS_EvaluateScriptForPrincipals compiles and executes a script associated with a JS object, obj. On successful completion, rval is a pointer to a variable that holds the value from the last executed expression statement processed in the script.
principals is a pointer to the JSPrincipals structure that contains the security information to associate with this script.
bytes is the string containing the text of the script. length indicates the size of the text version of the script in bytes.
filename is the name of the file (or URL) containing the script. This information in messages if an eror occurs during compilation. Similarly, lineno is used to report the line number of the script or file where an error occurred during compilation.
If a secure script compiles and executes successfully, JS_EvaluateScriptForPrincipals returns JS_TRUE. Otherwise it returns JS_FALSE. On failure, your application should assume that rval is undefined.
See also:
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