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Also handle calls to C functions.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Store the invocation scope and function context in the call stack frame
and not in the function object to properly deal with recursive invocations.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Get rid of the distinction between lexer/parser errors and runtime
exceptions, use exceptions everywhere instead.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- Keep an open FILE* reference to processed source files in order to
be able to rewind and extract error context later
- Build a proper call stack when invoking utpl functions
- Report call stack in exceptions
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Rewrite the lexer into a restartable state machine to support parsing from
file streams without the need to read the entire source text into memory
first.
As a side effect, the length of labels and strings is unlimited now.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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When an expression such as `foo.bar(a.b, c.d)` is evaluated, the state
context pointer will point to `c` while we need `foo` when invoking
functions.
Since the context pointer is only relevant for function calls and since
for function call opcodes, the lhs expression is always the first operand,
there is no need to store the context of subsequent ops.
Adjust the ut_get_operands() procedure to restore state->ctx to the result
of the first evaluated operand.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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- Implement proper closure scoping for function
- Avoid circular references when managing scopes pointers
- Eliminate ut_putval() in favor to json_object_put()
- Fix function return value handling
- Change internal function structure
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Also add testcases for switch/case blocks.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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