32. Template application helpers

The templates boost module implements collection of helper macros and functions to accompany AST.

All functions and symbols are in “templates_boost” module, use require to get access to it.

require daslib/templates_boost

Template

Template fields are

kaboomVar	table<string;tuple<prefix:string;suffix:string>>
call2name	table<string;string>
field2name	table<string;string>
var2name	table<string;string>
var2expr	table<string;smart_ptr< ast::Expression >>
var2exprList	table<string;array<smart_ptr< ast::Expression >>>
type2type	table<string;string>
type2etype	table<string; TypeDeclPtr >
blockArgName	table<string;string>
annArg	table<string;lambda<(ann: rtti::AnnotationDeclaration ):void>>
blkArg	table<string;array< VariablePtr >>
tag2expr	table<string;smart_ptr< ast::Expression >>

This structure contains collection of subsitution rules for a template.

32.1. Call macros

qmacro_expr

This macro implements qmacro_expr expression reification. Expected input is a block expression (ExprMakeBlock over ExprBlock). It applies reification rules to the expression, and returns first expression in the block. .. _call-macro-templates_boost-qmacro_variable:

qmacro_variable

This macro implements qmacro_variable expression reification. Expected input is are variable name and type expression (type<…>). Result is a new VariablePtr with the matching name and type. .. _call-macro-templates_boost-qmacro_block_to_array:

qmacro_block_to_array

This macro implements qmacro_block_to_array expression reification. Expected input is a block expression (ExprMakeBlock over ExprBlock). It applies reification rules to the expression, and returns array with contents of the ‘list’ section of the block.

qmacro_function

This macro implements qmacro_function expression reification. Expected input is a block expression (ExprMakeBlock over ExprBlock). It applies reification rules to the expression, and returns a FunctionPtr. New function matches block signature, as well as the block body. .. _call-macro-templates_boost-qmacro:

qmacro

This macro implements qmacro expression reification. It applies reification rules to the expression, and returns direct result of the substitution.

qmacro_method

This macro implements expression reification for class methods.

qmacro_block

This macro implements qmacro_block expression reification. Expected input is a block expression (ExprMakeBlock over ExprBlock). It applies reification rules to the expression, and returns unquoted ExprBlock. .. _call-macro-templates_boost-qmacro_type:

qmacro_type

This macro implements qmacro_type expression reification. Expected input is a type expression (type<…>). Result is TypeDeclPtr of a new type matching subtype of the type expression.

32.2. Template rules

• kaboomVarField (self:templates_boost::Template -const;name:string const;prefix:string const;suffix:string const) : void

• replaceVariable (self:templates_boost::Template -const;name:string const;expr:smart_ptr<ast::Expression> -const) : void

• renameVariable (self:templates_boost::Template -const;name:string const;newName:string const) : void

• renameVariable (self:templates_boost::Template -const;name:string const;newName:$::das_string const) : void

• replaceType (self:templates_boost::Template -const;name:string const;newName:string const) : void

• replaceAnnotationArgument (self:templates_boost::Template -const;name:string const;cb:lambda<(var ann:rtti::AnnotationDeclaration -const):void> -const) : void

• replaceBlockArgument (self:templates_boost::Template -const;name:string const;newName:string const) : void

kaboomVarField(self: Template; name: string const; prefix: string const; suffix: string const)

argument	argument type
self	templates_boost::Template
name	string const
prefix	string const
suffix	string const

Adds a rule to to the template to replace a variable field access with a prefix and suffix. I.e. foo.bar into prefix + bar + suffix

replaceVariable(self: Template; name: string const; expr: smart_ptr<ast::Expression>)

argument	argument type
self	templates_boost::Template
name	string const
expr	smart_ptr< ast::Expression >

Adds a rule to the template to replace a variable with an expression.

renameVariable(self: Template; name: string const; newName: string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	string const

Adds a rule to the template to rename a variable.

renameVariable(self: Template; name: string const; newName: das_string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	builtin::das_string const

Adds a rule to the template to rename a variable.

replaceType(self: Template; name: string const; newName: string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	string const

Adds a rule to the template to replace a type alias with another type alias, specified by name.

replaceAnnotationArgument(self: Template; name: string const; cb: lambda<(var ann:rtti::AnnotationDeclaration -const):void>)

argument	argument type
self	templates_boost::Template
name	string const
cb	lambda<(ann: rtti::AnnotationDeclaration ):void>

Adds a rule to the template to replace an annotation argument with the result of a callback.

replaceBlockArgument(self: Template; name: string const; newName: string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	string const

Adds a rule to the template to rename a block argument.

32.3. Template application

• apply_template (rules:templates_boost::Template -const;at:rtti::LineInfo const;expr:smart_ptr<ast::Expression> -const;forceAt:bool const) : smart_ptr<ast::Expression>

• apply_template (at:rtti::LineInfo const;expr:smart_ptr<ast::Expression>& -const;blk:block<(var rules:templates_boost::Template -const):void> const) : smart_ptr<ast::Expression>

• apply_template (expr:smart_ptr<ast::Expression>& -const;blk:block<(var rules:templates_boost::Template -const):void> const) : smart_ptr<ast::Expression>

apply_template(rules: Template; at: LineInfo const; expr: smart_ptr<ast::Expression>; forceAt: bool const)

apply_template returns ExpressionPtr

argument	argument type
rules	templates_boost::Template
at	rtti::LineInfo const
expr	smart_ptr< ast::Expression >
forceAt	bool const

Applies the template to the given expression. If forceAt is set, the resulting expression will have the same line info as ‘at’.

apply_template(at: LineInfo const; expr: smart_ptr<ast::Expression>&; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_template returns ExpressionPtr

argument	argument type
at	rtti::LineInfo const
expr	smart_ptr< ast::Expression >&
blk	block<(rules: templates_boost::Template ):void> const

Applies the template to the given expression. If forceAt is set, the resulting expression will have the same line info as ‘at’.

apply_template(expr: smart_ptr<ast::Expression>&; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_template returns ExpressionPtr

argument	argument type
expr	smart_ptr< ast::Expression >&
blk	block<(rules: templates_boost::Template ):void> const

Applies the template to the given expression. If forceAt is set, the resulting expression will have the same line info as ‘at’.

32.4. Expression helpers

• remove_deref (varname:string const;expr:smart_ptr<ast::Expression> -const) : void

remove_deref(varname: string const; expr: smart_ptr<ast::Expression>)

argument	argument type
varname	string const
expr	smart_ptr< ast::Expression >

Removes dereferences of the variable varname from the expression. This is typically used when replacing ‘workhorse’ variable with constant.

32.5. Block helpers

• unquote_block (expr:smart_ptr<ast::Expression> const) : smart_ptr<ast::ExprBlock>

• move_unquote_block (expr:smart_ptr<ast::Expression>& -const) : smart_ptr<ast::ExprBlock>

unquote_block(expr: ExpressionPtr)

unquote_block returns smart_ptr< ast::ExprBlock >

argument	argument type
expr	ExpressionPtr

Returns the corresponding block subexpression expression form the ExprMakeBlock.

move_unquote_block(expr: ExpressionPtr)

move_unquote_block returns smart_ptr< ast::ExprBlock >

argument	argument type
expr	ExpressionPtr

Moves the corresponding block subexpression expression form the ExprMakeBlock.

32.6. Global variable helpers

• add_global_var (mod:rtti::Module? const;vname:string const;vat:rtti::LineInfo const;value:smart_ptr<ast::Expression> -const) : bool

• add_global_var (mod:rtti::Module? const;vname:string const;typ:smart_ptr<ast::TypeDecl> -const;vat:rtti::LineInfo const;priv:bool const;blk:block<(var v:smart_ptr<ast::Variable> -const):void> const) : bool

• add_global_var (mod:rtti::Module? const;vname:string const;typ:smart_ptr<ast::TypeDecl> -const;vat:rtti::LineInfo const;priv:bool const) : bool

• add_global_let (mod:rtti::Module? const;vname:string const;vat:rtti::LineInfo const;value:smart_ptr<ast::Expression> -const) : bool

• add_global_private_var (mod:rtti::Module? const;vname:string const;vat:rtti::LineInfo const;value:smart_ptr<ast::Expression> -const) : bool

• add_global_private_let (mod:rtti::Module? const;vname:string const;vat:rtti::LineInfo const;value:smart_ptr<ast::Expression> -const) : bool

add_global_var(mod: rtti::Module? const; vname: string const; vat: LineInfo const; value: ExpressionPtr)

add_global_var returns bool

argument	argument type
mod	rtti::Module ? const
vname	string const
vat	rtti::LineInfo const
value	ExpressionPtr

Adds global variable to the module, given name and initial value. Global variables type is would be inferred from the initial value. priv specifies if the variable is private to the block.

add_global_var(mod: rtti::Module? const; vname: string const; typ: TypeDeclPtr; vat: LineInfo const; priv: bool const; blk: block<(var v:smart_ptr<ast::Variable> -const):void> const)

add_global_var returns bool

argument	argument type
mod	rtti::Module ? const
vname	string const
typ	TypeDeclPtr
vat	rtti::LineInfo const
priv	bool const
blk	block<(v: VariablePtr ):void> const

Adds global variable to the module, given name and initial value. Global variables type is would be inferred from the initial value. priv specifies if the variable is private to the block.

add_global_var(mod: rtti::Module? const; vname: string const; typ: TypeDeclPtr; vat: LineInfo const; priv: bool const)

add_global_var returns bool

argument	argument type
mod	rtti::Module ? const
vname	string const
typ	TypeDeclPtr
vat	rtti::LineInfo const
priv	bool const

Adds global variable to the module, given name and initial value. Global variables type is would be inferred from the initial value. priv specifies if the variable is private to the block.

add_global_let(mod: rtti::Module? const; vname: string const; vat: LineInfo const; value: ExpressionPtr)

add_global_let returns bool

argument	argument type
mod	rtti::Module ? const
vname	string const
vat	rtti::LineInfo const
value	ExpressionPtr

Add global variable to the module, given name and initial value. Variable type will be constant.

add_global_private_var(mod: rtti::Module? const; vname: string const; vat: LineInfo const; value: ExpressionPtr)

add_global_private_var returns bool

argument	argument type
mod	rtti::Module ? const
vname	string const
vat	rtti::LineInfo const
value	ExpressionPtr

Add global variable to the module, given name and initial value. It will be private.

add_global_private_let(mod: rtti::Module? const; vname: string const; vat: LineInfo const; value: ExpressionPtr)

add_global_private_let returns bool

argument	argument type
mod	rtti::Module ? const
vname	string const
vat	rtti::LineInfo const
value	ExpressionPtr

Add global variable to the module, given name and initial value. It will be private, and type will be constant.

32.7. Hygenic names

• make_unique_private_name (prefix:string const;vat:rtti::LineInfo const) : string

make_unique_private_name(prefix: string const; vat: LineInfo const)

make_unique_private_name returns string

argument	argument type
prefix	string const
vat	rtti::LineInfo const

Generates unique private name for the variable, given prefix and line info.

The assumption is that line info is unique for the context of the unique name generation. If it is not, additional measures must be taken to ensure uniqueness of prefix.

32.8. Uncategorized

replaceVarTag(self: Template; name: string const; expr: smart_ptr<ast::Expression>)

argument	argument type
self	templates_boost::Template
name	string const
expr	smart_ptr< ast::Expression >

Adds a rule to the template to replace a variable tag with an expression.

replaceArgumentWithList(self: Template; name: string const; blka: array<smart_ptr<ast::Variable>> const)

argument	argument type
self	templates_boost::Template
name	string const
blka	array< VariablePtr > const

Adds a rule to the template to replace a block argument with a list of variables.

replaceVariableWithList(self: Template; name: string const; expr: array<smart_ptr<ast::Expression>> const)

argument	argument type
self	templates_boost::Template
name	string const
expr	array< ExpressionPtr > const

Adds a rule to the template to replace a variable with an expression list.

replaceVariableWithList(self: Template; name: string const; expr: dasvector`smart_ptr`Expression const)

argument	argument type
self	templates_boost::Template
name	string const
expr	vector<smart_ptr<Expression>> const

Adds a rule to the template to replace a variable with an expression list.

renameField(self: Template; name: string const; newName: string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	string const

Adds a rule to the template to rename any field lookup (., ?., as, is, etc)

renameField(self: Template; name: string const; newName: das_string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	builtin::das_string const

Adds a rule to the template to rename any field lookup (., ?., as, is, etc)

replaceTypeWithTypeDecl(self: Template; name: string const; expr: TypeDeclPtr)

argument	argument type
self	templates_boost::Template
name	string const
expr	TypeDeclPtr

Adds a rule to the template to replace a type alias with another type alias, specified by type declaration.

renameCall(self: Template; name: string const; newName: string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	string const

Adds a rule to the template to rename a call.

renameCall(self: Template; name: string const; newName: das_string const)

argument	argument type
self	templates_boost::Template
name	string const
newName	builtin::das_string const

Adds a rule to the template to rename a call.

make_expression_block(exprs: array<smart_ptr<ast::Expression>>)

make_expression_block returns smart_ptr< ast::ExprBlock >

argument	argument type
exprs	array< ExpressionPtr >

Create ExprBlock and move all expressions from expr to the list of the block.

make_expression_block(exprs: dasvector`smart_ptr`Expression)

make_expression_block returns smart_ptr< ast::ExprBlock >

argument	argument type
exprs	vector<smart_ptr<Expression>>

Create ExprBlock and move all expressions from expr to the list of the block.

add_type_ptr_ref(a: TypeDeclPtr; flags: TypeDeclFlags)

add_type_ptr_ref returns TypeDeclPtr

argument	argument type
a	TypeDeclPtr
flags	TypeDeclFlags

Implementation details for the reification. This adds any array to the rules.

add_type_ptr_ref(st: StructurePtr; flags: TypeDeclFlags)

add_type_ptr_ref returns TypeDeclPtr

argument	argument type
st	StructurePtr
flags	TypeDeclFlags

Implementation details for the reification. This adds any array to the rules.

apply_qmacro(expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qmacro returns ExpressionPtr

argument	argument type
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for the expression reificaiton. This is a generat expression reification.

apply_qblock(expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qblock returns ExpressionPtr

argument	argument type
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for the expression reificaiton. This is a block reification.

apply_qblock_to_array(expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qblock_to_array returns array< ExpressionPtr >

argument	argument type
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for the expression reificaiton. This is a block reification.

apply_qblock_expr(expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qblock_expr returns ExpressionPtr

argument	argument type
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for the expression reificaiton. This is a frist line of the block as expression reification.

apply_qtype(expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qtype returns TypeDeclPtr

argument	argument type
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for the expression reificaiton. This is a type declaration reification.

expression_at(expr: ExpressionPtr; at: LineInfo const)

expression_at returns ExpressionPtr

argument	argument type
expr	ExpressionPtr
at	rtti::LineInfo const

Force expression location, than return it.

emplace_new(arr: array<smart_ptr<ast::Expression>>; expr: ExpressionPtr)

argument	argument type
arr	array< ExpressionPtr >
expr	ExpressionPtr

Unifies emplace and emplace_new for the array<VariablePtr>

emplace_new(arr: array<smart_ptr<ast::Variable>>; expr: VariablePtr)

argument	argument type
arr	array< VariablePtr >
expr	VariablePtr

Unifies emplace and emplace_new for the array<VariablePtr>

apply_qmacro_function(fname: string const; expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qmacro_function returns FunctionPtr

argument	argument type
fname	string const
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for reification. This is a function generation reification.

apply_qmacro_method(fname: string const; parent: StructurePtr; expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qmacro_method returns FunctionPtr

argument	argument type
fname	string const
parent	StructurePtr
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for reification. This is a class method function generation reification.

apply_qmacro_variable(vname: string const; expr: smart_ptr<ast::Expression>; blk: block<(var rules:templates_boost::Template -const):void> const)

apply_qmacro_variable returns VariablePtr

argument	argument type
vname	string const
expr	smart_ptr< ast::Expression >
blk	block<(rules: templates_boost::Template ):void> const

Implementation details for reification. This is a variable generation reification.

add_structure_field(cls: StructurePtr; name: string const; t: TypeDeclPtr; init: ExpressionPtr)

add_structure_field returns int const

argument	argument type
cls	StructurePtr
name	string const
t	TypeDeclPtr
init	ExpressionPtr

Adds a field to the structure.

make_class(name: string const; mod: rtti::Module? const)

make_class returns smart_ptr< ast::Structure >

argument	argument type
name	string const
mod	rtti::Module ? const

Creates a class structure. Adds __rtti, __finalize fields.

make_class(name: string const; baseClass: StructurePtr; mod: rtti::Module? const)

make_class returns smart_ptr< ast::Structure >

argument	argument type
name	string const
baseClass	StructurePtr
mod	rtti::Module ? const

Creates a class structure. Adds __rtti, __finalize fields.

make_class(name: string const; baseClass: ast::Structure? const; mod: rtti::Module? const)

make_class returns smart_ptr< ast::Structure >

argument	argument type
name	string const
baseClass	ast::Structure ? const
mod	rtti::Module ? const

Creates a class structure. Adds __rtti, __finalize fields.

make_class_constructor(cls: StructurePtr; ctor: FunctionPtr)

make_class_constructor returns smart_ptr< ast::Function >

argument	argument type
cls	StructurePtr
ctor	FunctionPtr

Adds a class constructor from a constructor function.

modify_to_class_member(cls: StructurePtr; fun: FunctionPtr; isExplicit: bool const; Constant: bool const)

argument	argument type
cls	StructurePtr
fun	FunctionPtr
isExplicit	bool const
Constant	bool const

Modifies function to be a member of a particular class.

add_array_ptr_ref(a: array<smart_ptr<auto(TT)>>)

add_array_ptr_ref returns array<smart_ptr<TT>>

argument	argument type
a	array<smart_ptr<auto(TT)>>

Implementation details for the reification. This adds any array to the rules.