137 lines
3.5 KiB
C++
137 lines
3.5 KiB
C++
//===-- ClangUserExpression.cpp -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// C Includes
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#include <stdio.h>
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#if HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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// C++ Includes
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#include "lldb/Core/ConstString.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Expression/ClangExpressionDeclMap.h"
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#include "lldb/Expression/ClangExpressionParser.h"
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#include "lldb/Expression/ClangUtilityFunction.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/Target.h"
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using namespace lldb_private;
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//------------------------------------------------------------------
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/// Constructor
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///
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/// @param[in] text
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/// The text of the function. Must be a full translation unit.
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///
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/// @param[in] name
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/// The name of the function, as used in the text.
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//------------------------------------------------------------------
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ClangUtilityFunction::ClangUtilityFunction (const char *text,
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const char *name) :
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m_function_text(text),
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m_function_name(name),
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m_jit_begin(LLDB_INVALID_ADDRESS),
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m_jit_end(LLDB_INVALID_ADDRESS)
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{
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}
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ClangUtilityFunction::~ClangUtilityFunction ()
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{
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}
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//------------------------------------------------------------------
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/// Install the utility function into a process
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///
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/// @param[in] error_stream
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/// A stream to print parse errors and warnings to.
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///
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/// @param[in] exe_ctx
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/// The execution context to install the utility function to.
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///
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/// @return
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/// True on success (no errors); false otherwise.
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//------------------------------------------------------------------
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bool
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ClangUtilityFunction::Install (Stream &error_stream,
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ExecutionContext &exe_ctx)
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{
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if (m_jit_begin != LLDB_INVALID_ADDRESS)
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{
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error_stream.PutCString("error: already installed\n");
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return false;
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}
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////////////////////////////////////
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// Set up the target and compiler
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//
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Target *target = exe_ctx.target;
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if (!target)
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{
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error_stream.PutCString ("error: invalid target\n");
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return false;
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}
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ConstString target_triple;
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target->GetTargetTriple (target_triple);
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if (!target_triple)
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target_triple = Host::GetTargetTriple ();
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if (!target_triple)
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{
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error_stream.PutCString ("error: invalid target triple\n");
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return false;
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}
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//////////////////////////
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// Parse the expression
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//
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m_expr_decl_map.reset(new ClangExpressionDeclMap(&exe_ctx));
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ClangExpressionParser parser(target_triple.GetCString(), *this);
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unsigned num_errors = parser.Parse (error_stream);
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if (num_errors)
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{
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error_stream.Printf ("error: %d errors parsing expression\n", num_errors);
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m_expr_decl_map.reset();
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return false;
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}
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//////////////////////////////////
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// JIT the output of the parser
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//
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Error jit_error = parser.MakeJIT (m_jit_begin, m_jit_end, exe_ctx);
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m_expr_decl_map.reset();
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if (jit_error.Success())
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{
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return true;
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}
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else
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{
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error_stream.Printf ("error: expression can't be interpreted or run\n", num_errors);
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return false;
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}
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}
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