d33fa70ddd
This patch is a reworking of Pete Lawrence's (@PortalPete) proposal for better expression evaluator error messages: https://github.com/llvm/llvm-project/pull/80938 Before: ``` $ lldb -o "expr a+b" (lldb) expr a+b error: <user expression 0>:1:1: use of undeclared identifier 'a' a+b ^ error: <user expression 0>:1:3: use of undeclared identifier 'b' a+b ^ ``` After: ``` (lldb) expr a+b ^ ^ │ ╰─ error: use of undeclared identifier 'b' ╰─ error: use of undeclared identifier 'a' ``` This eliminates the confusing `<user expression 0>:1:3` source location and avoids echoing the expression to the console again, which results in a cleaner presentation that makes it easier to grasp what's going on. You can't see it here, bug the word "error" is now also in color, if so desired. Depends on https://github.com/llvm/llvm-project/pull/106442.
75 lines
2.9 KiB
Python
75 lines
2.9 KiB
Python
"""
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Test that lldb persistent variables works correctly.
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"""
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import lldb
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from lldbsuite.test.lldbtest import *
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class PersistentVariablesTestCase(TestBase):
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def test_persistent_variables(self):
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"""Test that lldb persistent variables works correctly."""
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self.build()
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lldbutil.run_to_source_breakpoint(
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self, "// break here", lldb.SBFileSpec("main.c")
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)
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self.runCmd("expr int $i = i")
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self.expect_expr("$i == i", result_type="bool", result_value="true")
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self.expect_expr("$i + 1", result_type="int", result_value="6")
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self.expect_expr("$i + 3", result_type="int", result_value="8")
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self.expect_expr("$1 + $2", result_type="int", result_value="14")
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self.expect_expr("$3", result_type="int", result_value="14")
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self.expect_expr("$2", result_type="int", result_value="8")
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self.expect_expr("(int)-2", result_type="int", result_value="-2")
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self.expect_expr("$4", result_type="int", result_value="-2")
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self.expect_expr("$4 > (int)31", result_type="bool", result_value="false")
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self.expect_expr("(long)$4", result_type="long", result_value="-2")
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# Try assigning an existing persistent veriable with a numeric name.
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self.expect(
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"expr int $2 = 1234",
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error=True,
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substrs=[
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"Error [IRForTarget]: Names starting with $0, $1, ... are reserved for use as result names"
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],
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)
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# $2 should still have its original value.
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self.expect_expr("$2", result_type="int", result_value="8")
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# Try assigning an non-existing persistent veriable with a numeric name.
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self.expect(
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"expr int $200 = 3",
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error=True,
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substrs=[
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"Error [IRForTarget]: Names starting with $0, $1, ... are reserved for use as result names"
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],
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)
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# Test that $200 wasn't created by the previous expression.
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self.expect(
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"expr $200", error=True, substrs=["use of undeclared identifier '$200'"]
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)
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# Try redeclaring the persistent variable with the same type.
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# This should be rejected as we treat them as if they are globals.
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self.expect(
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"expr int $i = 123",
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error=True,
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substrs=["redefinition of persistent variable '$i'"],
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)
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self.expect_expr("$i", result_type="int", result_value="5")
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# Try redeclaring the persistent variable with another type. Should
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# also be rejected.
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self.expect(
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"expr long $i = 123",
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error=True,
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substrs=["redefinition of persistent variable '$i'"],
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)
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self.expect_expr("$i", result_type="int", result_value="5")
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# Try assigning the persistent variable a new value.
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self.expect("expr $i = 55")
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self.expect_expr("$i", result_type="int", result_value="55")
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