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Merged
merged 1 commit into from
Mar 29, 2025
Merged

tpl: matcher.True #2213

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4 changes: 1 addition & 3 deletions cmd/chore/gopminispec/minispec.gop
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Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,6 @@
* limitations under the License.
*/

package main

import (
"gop/doc/spec/mini"
"os"
Expand All @@ -26,4 +24,4 @@ if len(os.Args) < 2 {
return
}

echo mini.parseFile(nil, os.Args[1], nil, 0)
echo mini.parseFile(nil, os.Args[1], nil)
7 changes: 1 addition & 6 deletions doc/spec/mini/mini.gop
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Expand Up @@ -17,7 +17,6 @@
package mini

import (
"github.com/goplus/gop/parser"
"github.com/goplus/gop/token"
"github.com/goplus/gop/tpl"
)
Expand Down Expand Up @@ -180,11 +179,7 @@ IndexOrSlice = "[" (":" ?Expression | Expression (":" ?Expression | ?",")) "]"

// -----------------------------------------------------------------

// A Mode value is a set of flags (or 0). They control the amount of source code
// parsed and other optional parser functionality.
type Mode = parser.Mode

func ParseFile(fset *token.FileSet, filename string, src any, _ Mode) (f any, err error) {
func ParseFile(fset *token.FileSet, filename string, src any) (f any, err error) {
return cl.Parse(filename, src, &tpl.Config{
Fset: fset,
})
Expand Down
5 changes: 4 additions & 1 deletion tpl/cl/compile.go
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Expand Up @@ -150,10 +150,13 @@ func compileExpr(expr ast.Expr, ctx *context) (matcher.Matcher, bool) {
return tokenExpr(token.Token(v), expr, ctx)
case token.STRING:
v, e := strconv.Unquote(lit)
if e != nil || len(v) == 0 {
if e != nil {
ctx.addError(expr.Pos(), "invalid literal "+lit)
break
}
if v == "" {
return matcher.True(), true
}
if c := v[0]; c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c == '_' {
return matcher.Literal(token.IDENT, v), true
}
Expand Down
17 changes: 17 additions & 0 deletions tpl/matcher/match.go
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Expand Up @@ -103,6 +103,23 @@ type Matcher interface {

// -----------------------------------------------------------------------------

type gTrue struct{}

func (p gTrue) Match(src []*types.Token, ctx *Context) (n int, result any, err error) {
return 0, nil, nil
}

func (p gTrue) IsList() bool {
return false
}

// True returns a matcher that always succeeds.
func True() Matcher {
return gTrue{}
}

// -----------------------------------------------------------------------------

type gToken struct {
tok token.Token
}
Expand Down