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v.ast: add a customizable ast.Table .panic() method

pull/9804/head
Delyan Angelov 2021-04-19 15:28:37 +03:00
parent 73352583e7
commit aa3a8c5245
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GPG Key ID: 66886C0F12D595ED
1 changed files with 20 additions and 5 deletions
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25
vlib/v/ast/table.v
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@ -22,6 +22,9 @@ pub mut:
is_fmt bool is_fmt bool
used_fns map[string]bool // filled in by the checker, when pref.skip_unused = true; used_fns map[string]bool // filled in by the checker, when pref.skip_unused = true;
used_consts map[string]bool // filled in by the checker, when pref.skip_unused = true; used_consts map[string]bool // filled in by the checker, when pref.skip_unused = true;
panic_handler FnPanicHandler = default_table_panic_handler
panic_userdata voidptr = voidptr(0) // can be used to pass arbitrary data to panic_handler;
panic_npanics int
} }
[unsafe] [unsafe]
@ -42,6 +45,18 @@ pub fn (t &Table) free() {
} }
} }
pub type FnPanicHandler = fn (&Table, string)
fn default_table_panic_handler(t &Table, message string) {
panic(message)
}
pub fn (t &Table) panic(message string) {
mut mt := unsafe { &Table(t) }
mt.panic_npanics++
t.panic_handler(t, message)
}
pub struct Fn { pub struct Fn {
pub: pub:
params []Param params []Param
@ -209,7 +224,7 @@ pub fn (mut t TypeSymbol) register_method(new_fn Fn) int {
pub fn (t &Table) register_aggregate_method(mut sym TypeSymbol, name string) ?Fn { pub fn (t &Table) register_aggregate_method(mut sym TypeSymbol, name string) ?Fn {
if sym.kind != .aggregate { if sym.kind != .aggregate {
panic('Unexpected type symbol: $sym.kind') t.panic('Unexpected type symbol: $sym.kind')
} }
agg_info := sym.info as Aggregate agg_info := sym.info as Aggregate
// an aggregate always has at least 2 types // an aggregate always has at least 2 types
@ -263,7 +278,7 @@ pub fn (t &Table) type_find_method(s &TypeSymbol, name string) ?Fn {
fn (t &Table) register_aggregate_field(mut sym TypeSymbol, name string) ?StructField { fn (t &Table) register_aggregate_field(mut sym TypeSymbol, name string) ?StructField {
if sym.kind != .aggregate { if sym.kind != .aggregate {
panic('Unexpected type symbol: $sym.kind') t.panic('Unexpected type symbol: $sym.kind')
} }
mut agg_info := sym.info as Aggregate mut agg_info := sym.info as Aggregate
// an aggregate always has at least 2 types // an aggregate always has at least 2 types
@ -424,7 +439,7 @@ pub fn (t &Table) get_type_symbol(typ Type) &TypeSymbol {
return unsafe { &t.type_symbols[idx] } return unsafe { &t.type_symbols[idx] }
} }
// this should never happen // this should never happen
panic('get_type_symbol: invalid type (typ=$typ idx=$idx). Compiler bug. This should never happen. Please create a GitHub issue. t.panic('get_type_symbol: invalid type (typ=$typ idx=$idx). Compiler bug. This should never happen. Please create a GitHub issue.
') ')
} }
@ -441,7 +456,7 @@ pub fn (t &Table) get_final_type_symbol(typ Type) &TypeSymbol {
return unsafe { &t.type_symbols[idx] } return unsafe { &t.type_symbols[idx] }
} }
// this should never happen // this should never happen
panic('get_final_type_symbol: invalid type (typ=$typ idx=$idx). Compiler bug. This should never happen. Please create a GitHub issue.') t.panic('get_final_type_symbol: invalid type (typ=$typ idx=$idx). Compiler bug. This should never happen. Please create a GitHub issue.')
} }
[inline] [inline]
@ -956,7 +971,7 @@ pub fn (mut t Table) bitsize_to_type(bit_size int) Type {
} }
else { else {
if bit_size % 8 != 0 { // there is no way to do `i2131(32)` so this should never be reached if bit_size % 8 != 0 { // there is no way to do `i2131(32)` so this should never be reached
panic('compiler bug: bitsizes must be multiples of 8') t.panic('compiler bug: bitsizes must be multiples of 8')
} }
return new_type(t.find_or_register_array_fixed(byte_type, bit_size / 8)) return new_type(t.find_or_register_array_fixed(byte_type, bit_size / 8))
} }