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/*
* MRustC - Mutabah's Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* macro_rules/mod.cpp
* - Top-level handling for macro_rules macros
*/
#include <common.hpp>
#include "macro_rules.hpp"
#include <parse/parseerror.hpp>
#include <parse/tokentree.hpp>
#include <parse/common.hpp>
#include <limits.h>
#include "pattern_checks.hpp"
bool is_token_path(eTokenType tt) {
switch(tt)
{
case TOK_IDENT:
case TOK_DOUBLE_COLON:
case TOK_LT:
case TOK_DOUBLE_LT:
case TOK_RWORD_SELF:
case TOK_RWORD_SUPER:
case TOK_INTERPOLATED_PATH:
return true;
default:
return false;
}
}
bool is_token_pat(eTokenType tt) {
if( is_token_path(tt) )
return true;
switch( tt )
{
case TOK_PAREN_OPEN:
case TOK_SQUARE_OPEN:
case TOK_UNDERSCORE:
case TOK_AMP:
case TOK_RWORD_BOX:
case TOK_RWORD_REF:
case TOK_RWORD_MUT:
case TOK_STRING:
case TOK_INTEGER:
case TOK_CHAR:
case TOK_INTERPOLATED_PATTERN:
return true;
default:
return false;
}
}
bool is_token_type(eTokenType tt) {
if( is_token_path(tt) )
return true;
switch( tt )
{
case TOK_PAREN_OPEN:
case TOK_SQUARE_OPEN:
case TOK_STAR:
case TOK_AMP:
case TOK_RWORD_EXTERN:
case TOK_RWORD_UNSAFE:
case TOK_RWORD_FN:
case TOK_INTERPOLATED_TYPE:
return true;
default:
return false;
}
}
bool is_token_expr(eTokenType tt) {
if( is_token_path(tt) )
return true;
switch( tt )
{
// Leading unary operators
case TOK_AMP: // Borrow
case TOK_STAR: // Deref
case TOK_DASH: // Negate
case TOK_EXCLAM: // Invert
case TOK_RWORD_BOX: // Box
// Composite values
case TOK_PAREN_OPEN: // Parenthesised
case TOK_SQUARE_OPEN: // Array
// Flow
case TOK_RWORD_RETURN:
case TOK_RWORD_BREAK:
case TOK_RWORD_CONTINUE:
// Blocks
case TOK_BRACE_OPEN:
case TOK_RWORD_MATCH:
case TOK_RWORD_IF:
case TOK_RWORD_FOR:
case TOK_RWORD_WHILE:
case TOK_RWORD_LOOP:
case TOK_RWORD_UNSAFE:
// Closures
case TOK_RWORD_MOVE:
case TOK_PIPE:
case TOK_DOUBLE_PIPE:
// Literal tokens
case TOK_INTEGER:
case TOK_FLOAT:
case TOK_STRING:
case TOK_BYTESTRING:
case TOK_RWORD_TRUE:
case TOK_RWORD_FALSE:
case TOK_INTERPOLATED_EXPR:
return true;
default:
return false;
}
}
bool is_token_stmt(eTokenType tt) {
if( is_token_expr(tt) )
return true;
switch( tt )
{
case TOK_BRACE_OPEN:
case TOK_RWORD_LET:
case TOK_INTERPOLATED_STMT:
return true;
default:
return false;
}
}
bool is_token_item(eTokenType tt) {
switch( tt )
{
case TOK_HASH:
case TOK_RWORD_PUB:
case TOK_RWORD_UNSAFE:
case TOK_RWORD_TYPE:
case TOK_RWORD_CONST:
case TOK_RWORD_STATIC:
case TOK_RWORD_FN:
case TOK_RWORD_STRUCT:
case TOK_RWORD_ENUM:
case TOK_RWORD_TRAIT:
case TOK_RWORD_MOD:
case TOK_RWORD_USE:
case TOK_RWORD_EXTERN:
case TOK_RWORD_IMPL:
// TODO: more?
case TOK_INTERPOLATED_ITEM:
return true;
default:
return false;
}
}
bool is_token_vis(eTokenType tt) {
switch(tt)
{
case TOK_RWORD_PUB:
case TOK_INTERPOLATED_VIS:
return true;
default:
return true; // TODO: Is this true? it can capture just nothing
}
}
MacroRulesPtr::~MacroRulesPtr()
{
if(m_ptr)
{
delete m_ptr;
m_ptr = nullptr;
}
}
::std::ostream& operator<<(::std::ostream& os, const MacroPatEnt& x)
{
switch(x.type)
{
case MacroPatEnt::PAT_TOKEN: os << "=" << x.tok; break;
case MacroPatEnt::PAT_LOOP: os << "loop w/ " << x.tok << " [" << x.subpats << "]"; break;
default:
os << "$" << x.name << ":";
switch(x.type)
{
case MacroPatEnt::PAT_TOKEN: throw "";
case MacroPatEnt::PAT_LOOP: throw "";
case MacroPatEnt::PAT_TT: os << "tt"; break;
case MacroPatEnt::PAT_PAT: os << "pat"; break;
case MacroPatEnt::PAT_IDENT: os << "ident"; break;
case MacroPatEnt::PAT_PATH: os << "path"; break;
case MacroPatEnt::PAT_TYPE: os << "type"; break;
case MacroPatEnt::PAT_EXPR: os << "expr"; break;
case MacroPatEnt::PAT_STMT: os << "stmt"; break;
case MacroPatEnt::PAT_BLOCK: os << "block"; break;
case MacroPatEnt::PAT_META: os << "meta"; break;
case MacroPatEnt::PAT_ITEM: os << "item"; break;
case MacroPatEnt::PAT_VIS: os << "vis"; break;
}
break;
}
return os;
}
::std::ostream& operator<<(::std::ostream& os, const MacroPatEnt::Type& x)
{
switch(x)
{
case MacroPatEnt::PAT_TOKEN: os << "PAT_TOKEN"; break;
case MacroPatEnt::PAT_LOOP: os << "PAT_LOOP"; break;
case MacroPatEnt::PAT_TT: os << "PAT_TT"; break;
case MacroPatEnt::PAT_PAT: os << "PAT_PAT"; break;
case MacroPatEnt::PAT_IDENT: os << "PAT_IDENT"; break;
case MacroPatEnt::PAT_PATH: os << "PAT_PATH"; break;
case MacroPatEnt::PAT_TYPE: os << "PAT_TYPE"; break;
case MacroPatEnt::PAT_EXPR: os << "PAT_EXPR"; break;
case MacroPatEnt::PAT_STMT: os << "PAT_STMT"; break;
case MacroPatEnt::PAT_BLOCK: os << "PAT_BLOCK"; break;
case MacroPatEnt::PAT_META: os << "PAT_META"; break;
case MacroPatEnt::PAT_ITEM: os << "PAT_ITEM"; break;
case MacroPatEnt::PAT_VIS: os << "PAT_VIS"; break;
}
return os;
}
::std::ostream& operator<<(::std::ostream& os, const MacroExpansionEnt& x)
{
TU_MATCH( MacroExpansionEnt, (x), (e),
(Token,
os << "=" << e;
),
(NamedValue,
if( e >> 30 ) {
os << "$crate";
}
else {
os << "$" << e;
}
),
(Loop,
os << "${" << *e.variables.begin() << "}(" << e.entries << ") " << e.joiner;
)
)
return os;
}
MacroRules::~MacroRules()
{
}
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