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https://github.com/polserver/polserver
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58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
#include "LocalVariableScope.h"
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#include "bscript/compiler/Report.h"
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#include "bscript/compiler/analyzer/LocalVariableScopes.h"
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#include "bscript/compiler/analyzer/Variables.h"
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#include "bscript/compiler/file/SourceLocation.h"
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#include "bscript/compiler/model/LocalVariableScopeInfo.h"
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#include "bscript/compiler/model/Variable.h"
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namespace Pol::Bscript::Compiler
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{
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LocalVariableScope::LocalVariableScope( LocalVariableScopes& scopes,
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LocalVariableScopeInfo& local_variable_scope_info )
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: scopes( scopes ),
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report( scopes.report ),
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block_depth( scopes.local_variable_scopes.size() ),
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prev_locals( scopes.local_variables.count() ),
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local_variable_scope_info( local_variable_scope_info )
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{
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local_variable_scope_info.base_index = prev_locals;
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scopes.local_variable_scopes.push_back( this );
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}
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LocalVariableScope::~LocalVariableScope()
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{
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scopes.local_variables.remove_all_but( prev_locals );
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for ( auto& variable : shadowing )
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{
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scopes.local_variables.restore_shadowed( variable );
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}
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scopes.local_variable_scopes.pop_back();
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}
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std::shared_ptr<Variable> LocalVariableScope::create( const std::string& name, WarnOn warn_on,
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const SourceLocation& source_location )
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{
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if ( auto existing = scopes.local_variables.find( name ) )
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{
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if ( existing->block_depth == block_depth )
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{
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report.error( source_location, "Variable '", name, "' is already in scope.\n",
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" See previous definition at: ",
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existing->source_location, "\n" );
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return existing;
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}
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shadowing.push_back( existing );
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}
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auto local = scopes.local_variables.create( name, block_depth, warn_on,
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source_location );
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local_variable_scope_info.variables.push_back( local );
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return local;
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}
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} // namespace Pol::Bscript::Compiler
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