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xo-reader: simplify expect_expr_xs,expect_lparen_xs using qsm

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This commit is contained in:
Roland Conybeare 2024-08-19 16:48:58 -04:00
commit 0b0c424b84
7 changed files with 14 additions and 18 deletions
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2
include/xo/reader/expect_expr_xs.hpp
View file

@ -17,7 +17,7 @@ namespace xo {
public:
expect_expr_xs();
static void start(exprstatestack * p_stack);
static void start(parserstatemachine * p_psm);
virtual void on_lambda_token(const token_type & tk,
parserstatemachine * p_psm) override;

2
include/xo/reader/paren_xs.hpp
View file

@ -29,7 +29,7 @@ namespace xo {
static const paren_xs * from(const exprstate * x) { return dynamic_cast<const paren_xs *>(x); }
static void start(exprstatestack * p_stack);
static void start(parserstatemachine * p_psm);
bool admits_f64() const;
bool admits_rightparen() const;

2
src/reader/define_xs.cpp
View file

@ -172,7 +172,7 @@ namespace xo {
{
this->defxs_type_ = defexprstatetype::def_5;
expect_expr_xs::start(p_psm->p_stack_);
expect_expr_xs::start(p_psm);
} else {
this->illegal_input_error(self_name, tk);
}

8
src/reader/expect_expr_xs.cpp
View file

@ -24,8 +24,8 @@ namespace xo {
}
void
expect_expr_xs::start(exprstatestack * p_stack) {
p_stack->push_exprstate(expect_expr_xs::make());
expect_expr_xs::start(parserstatemachine * p_psm) {
p_psm->push_exprstate(expect_expr_xs::make());
}
expect_expr_xs::expect_expr_xs()
@ -54,10 +54,8 @@ namespace xo {
//constexpr const char * self_name = "exprstate::on_leftparen";
auto p_stack = p_psm->p_stack_;
/* push lparen_0 to remember to look for subsequent rightparen. */
paren_xs::start(p_stack);
paren_xs::start(p_psm);
}
void

4
src/reader/lambda_xs.cpp
View file

@ -42,12 +42,10 @@ namespace xo {
lambda_xs::on_formal_arglist(const std::vector<rp<Variable>> & argl,
parserstatemachine * p_psm)
{
auto p_stack = p_psm->p_stack_;
if (lmxs_type_ == lambdastatetype::lm_1) {
this->lmxs_type_ = lambdastatetype::lm_2;
this->argl_ = argl;
expect_expr_xs::start(p_stack);
expect_expr_xs::start(p_psm);
} else {
exprstate::on_formal_arglist(argl, p_psm);
}

6
src/reader/paren_xs.cpp
View file

@ -18,10 +18,10 @@ namespace xo {
}
void
paren_xs::start(exprstatestack * p_stack)
paren_xs::start(parserstatemachine * p_psm)
{
p_stack->push_exprstate(paren_xs::make());
expect_expr_xs::start(p_stack);
p_psm->push_exprstate(paren_xs::make());
expect_expr_xs::start(p_psm);
}
bool

8
src/reader/progress_xs.cpp
View file

@ -319,7 +319,7 @@ namespace xo {
this->op_type_ = tk2op(tk.tk_type());
/* infix operator must be followed by non-empty expression */
expect_expr_xs::start(p_stack);
expect_expr_xs::start(p_psm);
} else if (rhs_) {
/* already have complete expression stashed.
* behavior depends on operator precedence for tk with stored operator
@ -348,7 +348,7 @@ namespace xo {
progress_xs::start(expr, op2, p_stack);
/* infix operator must be followed by non-empty expression */
expect_expr_xs::start(p_stack);
expect_expr_xs::start(p_psm);
} else {
/* e.g.
* 6.2 + 4.9 * ...
@ -367,9 +367,9 @@ namespace xo {
/* 1. replace with nested incomplete infix exprs */
progress_xs::start(lhs_, op_type_, p_stack);
expect_expr_xs::start(p_stack);
expect_expr_xs::start(p_psm);
progress_xs::start(rhs_, op2, p_stack);
expect_expr_xs::start(p_stack);
expect_expr_xs::start(p_psm);
}
} else {