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<!-- ##### SECTION Title ##### -->
Evaluating JavaScript
<!-- ##### SECTION Short_Description ##### -->
Creating and interpreting scripts
<!-- ##### SECTION Long_Description ##### -->
<para>
Seed relies on WebKit's JavaScriptCore interpreter to actually evaluate snippets of JavaScript; however, it provides a handful of useful wrapper functions to quickly create and evaluate scripts. seed_make_script() and seed_evaluate() are the workhorse functions; these allow you to control every detail of the created script and its evaluation environment (including customizing the "this" object during evaluation, and setting a starting line number and filename from which the script originates). seed_simple_evaluate() provides an interface to execute a string of JavaScript without previously creating a #SeedScript, and, while requiring less supporting code, is less flexible.
</para>
<example>
<title>Create and evaluate a string of JavaScript with seed_make_script()</title>
<programlisting>
SeedEngine * eng;
...
SeedScript * script;
/* Create a simple #SeedScript */
script = seed_make_script(eng->context, "print('Hello, world!')", NULL, 0);
/* Evaluate the #SeedScript in the default context */
seed_evaluate(eng->context, script, 0);
...
</programlisting>
</example>
<example>
<title>Create and evaluate a string of JavaScript with seed_simple_evaluate()</title>
<programlisting>
SeedEngine * eng;
...
/* Evaluate a simple JavaScript snippet in the default context */
seed_simple_evaluate(eng->context, "print('Hello, world!')", NULL);
...
</programlisting>
</example>
<!-- ##### SECTION See_Also ##### -->
<para>
</para>
<!-- ##### SECTION Stability_Level ##### -->
<!-- ##### SECTION Image ##### -->
<!-- ##### STRUCT SeedScript ##### -->
<para>
</para>
@script:
@exception:
@source_url:
@line_number:
<!-- ##### FUNCTION seed_make_script ##### -->
<para>
</para>
@ctx:
@js:
@source_url:
@line_number:
@Returns:
<!-- ##### FUNCTION seed_evaluate ##### -->
<para>
</para>
@ctx:
@s:
@this_object:
@Returns:
<!-- ##### FUNCTION seed_simple_evaluate ##### -->
<para>
</para>
@ctx:
@source:
@exception:
@Returns:
<!-- ##### FUNCTION seed_script_new_from_file ##### -->
<para>
</para>
@ctx:
@file:
@Returns:
<!-- ##### FUNCTION seed_script_exception ##### -->
<para>
</para>
@s:
@Returns:
<!-- ##### FUNCTION seed_script_destroy ##### -->
<para>
</para>
@s:
|
